forked from M-Labs/artiq-zynq
use liconfig, libcoreio, szl from zynq-rs
This commit is contained in:
parent
7e26a87aed
commit
86b9045417
@ -2,6 +2,7 @@ let
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zynq-rs = (import ./zynq-rs.nix);
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pkgs = import <nixpkgs> { overlays = [ (import "${zynq-rs}/nix/mozilla-overlay.nix") ]; };
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rustPlatform = (import "${zynq-rs}/nix/rust-platform.nix" { inherit pkgs; });
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zc706-szl = (import zynq-rs).zc706-szl;
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zc706-fsbl = import "${zynq-rs}/nix/fsbl.nix" { inherit pkgs; };
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mkbootimage = import "${zynq-rs}/nix/mkbootimage.nix" { inherit pkgs; };
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artiqpkgs = import <artiq-fast/default.nix> { inherit pkgs; };
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@ -12,7 +13,7 @@ let
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version = "0.1.0";
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src = ./src;
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cargoSha256 = "0fpnwiqwscd8v48hpjzy0ydmiv3kl68lbl9j06nkybs9flj1r08a";
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cargoSha256 = "10hap25cy2qgwr7b86jid73i6fp480iym29r3r97jindfxk0svi0";
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nativeBuildInputs = [
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pkgs.gnumake
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@ -31,10 +32,8 @@ let
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mkdir -p $out $out/nix-support
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cp ../build/runtime.bin $out/runtime.bin
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cp ../build/firmware/armv7-none-eabihf/release/runtime $out/runtime.elf
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cp ../build/firmware/armv7-none-eabihf/debug/szl $out/szl.elf
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echo file binary-dist $out/runtime.bin >> $out/nix-support/hydra-build-products
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echo file binary-dist $out/runtime.elf >> $out/nix-support/hydra-build-products
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echo file binary-dist $out/szl.elf >> $out/nix-support/hydra-build-products
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'';
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doCheck = false;
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@ -58,7 +57,7 @@ let
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jtag = pkgs.runCommand "zc706-${variant}-jtag" {}
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''
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mkdir $out
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ln -s ${firmware}/szl.elf $out
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ln -s ${zc706-szl}/szl.elf $out
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ln -s ${firmware}/runtime.bin $out
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ln -s ${gateware}/top.bit $out
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'';
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@ -71,7 +70,7 @@ let
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# can't write software (mkbootimage will segfault).
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bifdir=`mktemp -d`
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cd $bifdir
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ln -s ${firmware}/szl.elf szl.elf
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ln -s ${zc706-szl}/szl.elf szl.elf
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ln -s ${firmware}/runtime.elf runtime.elf
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ln -s ${gateware}/top.bit top.bit
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cat > boot.bif << EOF
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15
local_run.sh
15
local_run.sh
@ -2,6 +2,15 @@
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set -e
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if [ -z "$OPENOCD_ZYNQ" ]; then
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echo "OPENOCD_ZYNQ environment variable must be set"
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exit 1
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fi
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if [ -z "$SZL" ]; then
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echo "SZL environment variable must be set"
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exit 1
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fi
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impure=0
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load_bitstream=1
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board_host="192.168.1.52"
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@ -24,18 +33,16 @@ load_bitstream_cmd=""
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build_dir=`pwd`/build
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result_dir=`pwd`/result
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cd $OPENOCD_ZYNQ
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openocd -f zc706.cfg -c "load_image $SZL; resume 0; exit"
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sleep 5
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if [ $impure -eq 1 ]; then
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if [ $load_bitstream -eq 1 ]; then
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load_bitstream_cmd="-g $build_dir/gateware/top.bit"
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fi
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openocd -f zc706.cfg -c "load_image $build_dir/firmware/armv7-none-eabihf/debug/szl; resume 0; exit"
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sleep 5
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artiq_netboot $load_bitstream_cmd -f $build_dir/runtime.bin -b $board_host
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else
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if [ $load_bitstream -eq 1 ]; then
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load_bitstream_cmd="-g $result_dir/top.bit"
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fi
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openocd -f zc706.cfg -c "load_image $result_dir/szl.elf; resume 0; exit"
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sleep 5
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artiq_netboot $load_bitstream_cmd -f $result_dir/runtime.bin -b $board_host
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fi
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@ -2,6 +2,15 @@
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set -e
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if [ -z "$OPENOCD_ZYNQ" ]; then
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echo "OPENOCD_ZYNQ environment variable must be set"
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exit 1
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fi
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if [ -z "$SZL" ]; then
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echo "SZL environment variable must be set"
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exit 1
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fi
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target_host="rpi-4.m-labs.hk"
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impure=0
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pure_dir="result"
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@ -36,19 +45,18 @@ load_bitstream_cmd=""
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echo "Creating $target_folder..."
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ssh $sshopts $target_host "mkdir -p $target_folder"
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echo "Copying files..."
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rsync -e "ssh $sshopts" $OPENOCD_ZYNQ/* $target_host:$target_folder
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rsync -e "ssh $sshopts" -Lc $OPENOCD_ZYNQ/* $target_host:$target_folder
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rsync -e "ssh $sshopts" -Lc $SZL $target_host:$target_folder
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if [ $impure -eq 1 ]; then
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if [ $load_bitstream -eq 1 ]; then
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load_bitstream_cmd="-g build/gateware/top.bit"
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fi
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firmware="build/runtime.bin"
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rsync -e "ssh $sshopts" $impure_dir/firmware/armv7-none-eabihf/debug/szl $target_host:$target_folder/szl.elf
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else
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if [ $load_bitstream -eq 1 ]; then
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load_bitstream_cmd="-g $pure_dir/top.bit"
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fi
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firmware="$pure_dir/runtime.bin"
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rsync -e "ssh $sshopts" -Lc $pure_dir/szl.elf $target_host:$target_folder
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fi
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echo "Programming board..."
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ssh $sshopts $target_host "cd $target_folder; openocd -f zc706.cfg -c'load_image szl.elf; resume 0; exit'"
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@ -6,6 +6,7 @@ let
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artiqpkgs = import "${artiq-fast}/default.nix" { inherit pkgs; };
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vivado = import "${artiq-fast}/vivado.nix" { inherit pkgs; };
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cargo-xbuild = import ./cargo-xbuild.nix { inherit pkgs; };
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zc706-szl = (import zynq-rs).zc706-szl;
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in
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pkgs.stdenv.mkDerivation {
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name = "artiq-zynq-env";
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@ -30,4 +31,5 @@ in
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XARGO_RUST_SRC = "${rustPlatform.rust.rustc.src}/src";
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OPENOCD_ZYNQ = "${zynq-rs}/openocd";
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SZL = "${zc706-szl}/szl.elf";
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}
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26
src/Cargo.lock
generated
26
src/Cargo.lock
generated
@ -58,6 +58,7 @@ dependencies = [
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[[package]]
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name = "core_io"
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version = "0.1.20200410"
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source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#7360984efbd772ae992ef00af09786b0ae8430f0"
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dependencies = [
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"memchr",
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]
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@ -187,7 +188,7 @@ dependencies = [
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[[package]]
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name = "libasync"
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version = "0.0.0"
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source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#4fef8a71929b989e1189736628ab9c186f23f3a5"
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source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#7360984efbd772ae992ef00af09786b0ae8430f0"
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dependencies = [
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"embedded-hal",
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"libcortex_a9",
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@ -199,7 +200,7 @@ dependencies = [
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[[package]]
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name = "libboard_zynq"
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version = "0.0.0"
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source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#4fef8a71929b989e1189736628ab9c186f23f3a5"
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source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#7360984efbd772ae992ef00af09786b0ae8430f0"
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dependencies = [
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"bit_field",
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"embedded-hal",
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@ -223,6 +224,7 @@ dependencies = [
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[[package]]
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name = "libconfig"
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version = "0.1.0"
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source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#7360984efbd772ae992ef00af09786b0ae8430f0"
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dependencies = [
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"core_io",
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"fatfs",
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@ -233,7 +235,7 @@ dependencies = [
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[[package]]
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name = "libcortex_a9"
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version = "0.0.0"
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source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#4fef8a71929b989e1189736628ab9c186f23f3a5"
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source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#7360984efbd772ae992ef00af09786b0ae8430f0"
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dependencies = [
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"bit_field",
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"libregister",
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@ -249,7 +251,7 @@ checksum = "c7d73b3f436185384286bd8098d17ec07c9a7d2388a6599f824d8502b529702a"
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[[package]]
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name = "libregister"
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version = "0.0.0"
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source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#4fef8a71929b989e1189736628ab9c186f23f3a5"
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source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#7360984efbd772ae992ef00af09786b0ae8430f0"
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dependencies = [
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"bit_field",
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"vcell",
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@ -259,7 +261,7 @@ dependencies = [
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[[package]]
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name = "libsupport_zynq"
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version = "0.0.0"
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source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#4fef8a71929b989e1189736628ab9c186f23f3a5"
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source = "git+https://git.m-labs.hk/M-Labs/zynq-rs.git#7360984efbd772ae992ef00af09786b0ae8430f0"
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dependencies = [
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"compiler_builtins",
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"libboard_zynq",
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@ -451,20 +453,6 @@ dependencies = [
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"unicode-xid",
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]
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[[package]]
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name = "szl"
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version = "0.1.0"
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dependencies = [
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"byteorder",
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"core_io",
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"libboard_zynq",
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"libconfig",
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"libcortex_a9",
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"libregister",
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"libsupport_zynq",
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"log",
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]
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[[package]]
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name = "unicode-xid"
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version = "0.2.1"
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@ -2,24 +2,11 @@
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members = [
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"libc",
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"libdyld",
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"libconfig",
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"libcoreio",
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"libdwarf",
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"libunwind",
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"runtime",
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"szl"
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]
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# Note: we are using dev profile for szl to override the opt-level only
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[profile.dev]
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panic = "abort"
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debug = true
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codegen-units = 1
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opt-level = 'z'
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lto = true
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debug-assertions = false
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overflow-checks = false
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[profile.release]
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panic = "abort"
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debug = true
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@ -28,5 +15,5 @@ opt-level = 2
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lto = true
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[patch.crates-io]
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core_io = { path = "./libcoreio" }
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core_io = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
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compiler_builtins = { git = "https://git.m-labs.hk/M-Labs/compiler-builtins-zynq.git"}
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@ -1,6 +1,6 @@
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VARIANT := simple
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all: ../build/firmware/armv7-none-eabihf/debug/szl ../build/firmware/armv7-none-eabihf/release/runtime ../build/runtime.bin
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all: ../build/firmware/armv7-none-eabihf/release/runtime ../build/runtime.bin
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.PHONY: all
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@ -14,6 +14,3 @@ all: ../build/firmware/armv7-none-eabihf/debug/szl ../build/firmware/armv7-none-
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../build/runtime.bin: ../build/firmware/armv7-none-eabihf/release/runtime
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llvm-objcopy -O binary ../build/firmware/armv7-none-eabihf/release/runtime ../build/runtime.bin
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../build/firmware/armv7-none-eabihf/debug/szl: .cargo/* armv7-none-eabihf.json Cargo.lock Cargo.toml szl/* szl/src/*
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XBUILD_SYSROOT_PATH=`pwd`/../build/sysroot cargo xbuild -p szl --target-dir ../build/firmware
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@ -1,15 +0,0 @@
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[package]
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name = "libconfig"
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version = "0.1.0"
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authors = ["M-Labs"]
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edition = "2018"
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[dependencies]
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libboard_zynq = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
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core_io = { version = "0.1", features = ["collections"] }
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fatfs = { version = "0.3", features = ["core_io"], default-features = false }
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log = "0.4"
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[features]
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ipv6 = []
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@ -1,181 +0,0 @@
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use alloc::vec::Vec;
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use core_io::{Error, Read, Seek, SeekFrom};
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use libboard_zynq::devc;
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use log::debug;
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#[derive(Debug)]
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pub enum BootgenLoadingError {
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InvalidBootImageHeader,
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MissingPartition,
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EncryptedBitstream,
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IoError(Error),
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DevcError(devc::DevcError),
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}
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impl From<Error> for BootgenLoadingError {
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fn from(error: Error) -> Self {
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BootgenLoadingError::IoError(error)
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}
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}
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impl From<devc::DevcError> for BootgenLoadingError {
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fn from(error: devc::DevcError) -> Self {
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BootgenLoadingError::DevcError(error)
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}
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}
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impl core::fmt::Display for BootgenLoadingError {
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fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
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use BootgenLoadingError::*;
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match self {
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InvalidBootImageHeader => write!(
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f,
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"Invalid boot image header. Check if the file is correct."
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),
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MissingPartition => write!(f, "Partition not found. Check your compile configuration."),
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EncryptedBitstream => write!(f, "Encrypted bitstream is not supported."),
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IoError(e) => write!(f, "Error while reading: {}", e),
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DevcError(e) => write!(f, "PCAP interface error: {}", e),
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}
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}
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}
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#[repr(C)]
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struct PartitionHeader {
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pub encrypted_length: u32,
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pub unencrypted_length: u32,
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pub word_length: u32,
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pub dest_load_addr: u32,
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pub dest_exec_addr: u32,
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pub data_offset: u32,
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pub attribute_bits: u32,
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pub section_count: u32,
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pub checksum_offset: u32,
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pub header_offset: u32,
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pub cert_offset: u32,
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pub reserved: [u32; 4],
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pub checksum: u32,
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}
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/// Read a u32 word from the reader.
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fn read_u32<Reader: Read>(reader: &mut Reader) -> Result<u32, BootgenLoadingError> {
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let mut buffer: [u8; 4] = [0; 4];
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reader.read_exact(&mut buffer)?;
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let mut result: u32 = 0;
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for i in 0..4 {
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result |= (buffer[i] as u32) << (i * 8);
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}
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Ok(result)
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}
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/// Load PL partition header.
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fn load_pl_header<File: Read + Seek>(
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file: &mut File,
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) -> Result<Option<PartitionHeader>, BootgenLoadingError> {
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let mut buffer: [u8; 0x40] = [0; 0x40];
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file.read_exact(&mut buffer)?;
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let header = unsafe { core::mem::transmute::<_, PartitionHeader>(buffer) };
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if header.attribute_bits & (2 << 4) != 0 {
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Ok(Some(header))
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} else {
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Ok(None)
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}
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}
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fn load_ps_header<File: Read + Seek>(
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file: &mut File,
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) -> Result<Option<PartitionHeader>, BootgenLoadingError> {
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let mut buffer: [u8; 0x40] = [0; 0x40];
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file.read_exact(&mut buffer)?;
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let header = unsafe { core::mem::transmute::<_, PartitionHeader>(buffer) };
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if header.attribute_bits & (1 << 4) != 0 {
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Ok(Some(header))
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} else {
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Ok(None)
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}
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}
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/// Locate the partition from the image, and return the size (in bytes) of the partition if successful.
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/// This function would seek the file to the location of the partition.
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fn locate<
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File: Read + Seek,
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F: Fn(&mut File) -> Result<Option<PartitionHeader>, BootgenLoadingError>,
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>(
|
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file: &mut File,
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f: F,
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) -> Result<usize, BootgenLoadingError> {
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file.seek(SeekFrom::Start(0))?;
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const BOOT_HEADER_SIGN: u32 = 0x584C4E58;
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// read boot header signature
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file.seek(SeekFrom::Start(0x24))?;
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if read_u32(file)? != BOOT_HEADER_SIGN {
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return Err(BootgenLoadingError::InvalidBootImageHeader);
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}
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// find fsbl offset
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file.seek(SeekFrom::Start(0x30))?;
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// the length is in bytes, we have to convert it to words to compare with the partition offset
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// later
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let fsbl = read_u32(file)? / 4;
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// read partition header offset
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file.seek(SeekFrom::Start(0x9C))?;
|
||||
let ptr = read_u32(file)?;
|
||||
debug!("Partition header pointer = {:0X}", ptr);
|
||||
file.seek(SeekFrom::Start(ptr as u64))?;
|
||||
|
||||
// at most 3 partition headers
|
||||
for _ in 0..3 {
|
||||
if let Some(header) = f(file)? {
|
||||
let encrypted_length = header.encrypted_length;
|
||||
let unencrypted_length = header.unencrypted_length;
|
||||
debug!("Unencrypted length = {:0X}", unencrypted_length);
|
||||
if encrypted_length != unencrypted_length {
|
||||
return Err(BootgenLoadingError::EncryptedBitstream);
|
||||
}
|
||||
|
||||
let start_addr = header.data_offset;
|
||||
// skip fsbl
|
||||
if start_addr == fsbl {
|
||||
continue;
|
||||
}
|
||||
debug!("Partition start address: {:0X}", start_addr);
|
||||
file.seek(SeekFrom::Start(start_addr as u64 * 4))?;
|
||||
|
||||
return Ok(unencrypted_length as usize * 4);
|
||||
}
|
||||
}
|
||||
Err(BootgenLoadingError::MissingPartition)
|
||||
}
|
||||
|
||||
/// Load bitstream from bootgen file.
|
||||
/// This function parses the file, locate the bitstream and load it through the PCAP driver.
|
||||
/// It requires a large buffer, please enable the DDR RAM before using it.
|
||||
pub fn load_bitstream<File: Read + Seek>(file: &mut File) -> Result<(), BootgenLoadingError> {
|
||||
let size = locate(file, load_pl_header)?;
|
||||
unsafe {
|
||||
// align to 64 bytes
|
||||
let ptr = alloc::alloc::alloc(alloc::alloc::Layout::from_size_align(size, 64).unwrap());
|
||||
let buffer = core::slice::from_raw_parts_mut(ptr, size);
|
||||
file.read_exact(buffer).map_err(|e| {
|
||||
core::ptr::drop_in_place(ptr);
|
||||
e
|
||||
})?;
|
||||
let mut devcfg = devc::DevC::new();
|
||||
devcfg.enable();
|
||||
devcfg.program(&buffer).map_err(|e| {
|
||||
core::ptr::drop_in_place(ptr);
|
||||
e
|
||||
})?;
|
||||
core::ptr::drop_in_place(ptr);
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
pub fn get_runtime<File: Read + Seek>(file: &mut File) -> Result<Vec<u8>, BootgenLoadingError> {
|
||||
let size = locate(file, load_ps_header)?;
|
||||
let mut buffer = Vec::with_capacity(size);
|
||||
unsafe {
|
||||
buffer.set_len(size);
|
||||
}
|
||||
file.read_exact(&mut buffer)?;
|
||||
Ok(buffer)
|
||||
}
|
||||
@ -1,115 +0,0 @@
|
||||
#![no_std]
|
||||
extern crate alloc;
|
||||
|
||||
use core::fmt;
|
||||
use alloc::{string::FromUtf8Error, string::String, vec::Vec, rc::Rc};
|
||||
use core_io::{self as io, BufRead, BufReader, Read};
|
||||
use libboard_zynq::sdio;
|
||||
|
||||
pub mod sd_reader;
|
||||
pub mod net_settings;
|
||||
pub mod bootgen;
|
||||
|
||||
#[derive(Debug)]
|
||||
pub enum Error<'a> {
|
||||
SdError(sdio::sd_card::CardInitializationError),
|
||||
IoError(io::Error),
|
||||
Utf8Error(FromUtf8Error),
|
||||
KeyNotFoundError(&'a str),
|
||||
NoConfig,
|
||||
}
|
||||
|
||||
pub type Result<'a, T> = core::result::Result<T, Error<'a>>;
|
||||
|
||||
impl<'a> fmt::Display for Error<'a> {
|
||||
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
||||
match self {
|
||||
Error::SdError(error) => write!(f, "SD error: {}", error),
|
||||
Error::IoError(error) => write!(f, "I/O error: {}", error),
|
||||
Error::Utf8Error(error) => write!(f, "UTF-8 error: {}", error),
|
||||
Error::KeyNotFoundError(name) => write!(f, "Configuration key `{}` not found", name),
|
||||
Error::NoConfig => write!(f, "Configuration not present"),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a> From<sdio::sd_card::CardInitializationError> for Error<'a> {
|
||||
fn from(error: sdio::sd_card::CardInitializationError) -> Self {
|
||||
Error::SdError(error)
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a> From<io::Error> for Error<'a> {
|
||||
fn from(error: io::Error) -> Self {
|
||||
Error::IoError(error)
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a> From<FromUtf8Error> for Error<'a> {
|
||||
fn from(error: FromUtf8Error) -> Self {
|
||||
Error::Utf8Error(error)
|
||||
}
|
||||
}
|
||||
|
||||
fn parse_config<'a>(
|
||||
key: &'a str,
|
||||
buffer: &mut Vec<u8>,
|
||||
file: fatfs::File<sd_reader::SdReader>,
|
||||
) -> Result<'a, ()> {
|
||||
let prefix = [key, "="].concat();
|
||||
for line in BufReader::new(file).lines() {
|
||||
let line = line?;
|
||||
if line.starts_with(&prefix) {
|
||||
buffer.extend(line[prefix.len()..].as_bytes());
|
||||
return Ok(());
|
||||
}
|
||||
}
|
||||
Err(Error::KeyNotFoundError(key))
|
||||
}
|
||||
|
||||
pub struct Config {
|
||||
fs: Option<Rc<fatfs::FileSystem<sd_reader::SdReader>>>,
|
||||
}
|
||||
|
||||
impl Config {
|
||||
pub fn new() -> Result<'static, Self> {
|
||||
let sdio = sdio::Sdio::sdio0(true);
|
||||
if !sdio.is_card_inserted() {
|
||||
Err(sdio::sd_card::CardInitializationError::NoCardInserted)?;
|
||||
}
|
||||
let sd = sdio::sd_card::SdCard::from_sdio(sdio)?;
|
||||
let reader = sd_reader::SdReader::new(sd);
|
||||
|
||||
let fs = reader.mount_fatfs(sd_reader::PartitionEntry::Entry1)?;
|
||||
Ok(Config { fs: Some(Rc::new(fs)) })
|
||||
}
|
||||
|
||||
pub fn from_fs(fs: Option<Rc<fatfs::FileSystem<sd_reader::SdReader>>>) -> Self {
|
||||
Config { fs }
|
||||
}
|
||||
|
||||
pub fn new_dummy() -> Self {
|
||||
Config { fs: None }
|
||||
}
|
||||
|
||||
pub fn read<'b>(&self, key: &'b str) -> Result<'b, Vec<u8>> {
|
||||
if let Some(fs) = &self.fs {
|
||||
let root_dir = fs.root_dir();
|
||||
let mut buffer: Vec<u8> = Vec::new();
|
||||
match root_dir.open_file(&["/CONFIG/", key, ".BIN"].concat()) {
|
||||
Ok(mut f) => f.read_to_end(&mut buffer).map(|_| ())?,
|
||||
Err(_) => match root_dir.open_file("/CONFIG.TXT") {
|
||||
Ok(f) => parse_config(key, &mut buffer, f)?,
|
||||
Err(_) => return Err(Error::KeyNotFoundError(key)),
|
||||
},
|
||||
};
|
||||
Ok(buffer)
|
||||
} else {
|
||||
Err(Error::NoConfig)
|
||||
}
|
||||
}
|
||||
|
||||
pub fn read_str<'b>(&self, key: &'b str) -> Result<'b, String> {
|
||||
Ok(String::from_utf8(self.read(key)?)?)
|
||||
}
|
||||
}
|
||||
@ -1,62 +0,0 @@
|
||||
use core::fmt;
|
||||
|
||||
use libboard_zynq::smoltcp::wire::{EthernetAddress, IpAddress};
|
||||
|
||||
use super::Config;
|
||||
|
||||
pub struct NetAddresses {
|
||||
pub hardware_addr: EthernetAddress,
|
||||
pub ipv4_addr: IpAddress,
|
||||
#[cfg(feature = "ipv6")]
|
||||
pub ipv6_ll_addr: IpAddress,
|
||||
#[cfg(feature = "ipv6")]
|
||||
pub ipv6_addr: Option<IpAddress>
|
||||
}
|
||||
|
||||
impl fmt::Display for NetAddresses {
|
||||
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
||||
write!(f, "MAC={} IPv4={} ",
|
||||
self.hardware_addr, self.ipv4_addr)?;
|
||||
|
||||
#[cfg(feature = "ipv6")]
|
||||
{
|
||||
write!(f, "IPv6-LL={}", self.ipv6_ll_addr)?;
|
||||
match self.ipv6_addr {
|
||||
Some(addr) => write!(f, " {}", addr)?,
|
||||
None => write!(f, " IPv6: no configured address")?
|
||||
}
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
pub fn get_adresses(cfg: &Config) -> NetAddresses {
|
||||
let mut hardware_addr = EthernetAddress([0x02, 0x00, 0x00, 0x00, 0x00, 0x52]);
|
||||
let mut ipv4_addr = IpAddress::v4(192, 168, 1, 52);
|
||||
|
||||
if let Ok(Ok(addr)) = cfg.read_str("mac").map(|s| s.parse()) {
|
||||
hardware_addr = addr;
|
||||
}
|
||||
if let Ok(Ok(addr)) = cfg.read_str("ip").map(|s| s.parse()) {
|
||||
ipv4_addr = addr;
|
||||
}
|
||||
#[cfg(feature = "ipv6")]
|
||||
let ipv6_addr = cfg.read_str("ipv6").ok().and_then(|s| s.parse().ok());
|
||||
|
||||
#[cfg(feature = "ipv6")]
|
||||
let ipv6_ll_addr = IpAddress::v6(
|
||||
0xfe80, 0x0000, 0x0000, 0x0000,
|
||||
(((hardware_addr.0[0] ^ 0x02) as u16) << 8) | (hardware_addr.0[1] as u16),
|
||||
((hardware_addr.0[2] as u16) << 8) | 0x00ff,
|
||||
0xfe00 | (hardware_addr.0[3] as u16),
|
||||
((hardware_addr.0[4] as u16) << 8) | (hardware_addr.0[5] as u16));
|
||||
|
||||
NetAddresses {
|
||||
hardware_addr,
|
||||
ipv4_addr,
|
||||
#[cfg(feature = "ipv6")]
|
||||
ipv6_ll_addr,
|
||||
#[cfg(feature = "ipv6")]
|
||||
ipv6_addr
|
||||
}
|
||||
}
|
||||
@ -1,303 +0,0 @@
|
||||
use core_io::{BufRead, Error, ErrorKind, Read, Result as IoResult, Seek, SeekFrom, Write};
|
||||
use fatfs;
|
||||
use libboard_zynq::sdio::{sd_card::SdCard, CmdTransferError};
|
||||
use log::debug;
|
||||
use alloc::vec::Vec;
|
||||
|
||||
const MBR_SIGNATURE: [u8; 2] = [0x55, 0xAA];
|
||||
const PARTID_FAT12: u8 = 0x01;
|
||||
const PARTID_FAT16_LESS32M: u8 = 0x04;
|
||||
const PARTID_FAT16: u8 = 0x06;
|
||||
const PARTID_FAT32: u8 = 0x0B;
|
||||
const PARTID_FAT32_LBA: u8 = 0x0C;
|
||||
|
||||
fn cmd_error_to_io_error(_: CmdTransferError) -> Error {
|
||||
Error::new(ErrorKind::Other, "Command transfer error")
|
||||
}
|
||||
|
||||
const BLOCK_SIZE: usize = 512;
|
||||
|
||||
/// SdReader struct implementing `Read + BufRead + Write + Seek` traits for `core_io`.
|
||||
/// Used as an adaptor for fatfs crate, but could be used directly for raw data access.
|
||||
///
|
||||
/// Implementation: all read/writes would be split into unaligned and block-aligned parts,
|
||||
/// unaligned read/writes would do a buffered read/write using a block-sized internal buffer,
|
||||
/// while aligned transactions would be sent to the SD card directly for performance reason.
|
||||
pub struct SdReader {
|
||||
/// Internal SdCard handle.
|
||||
sd: SdCard,
|
||||
/// Read buffer with the size of 1 block.
|
||||
buffer: Vec<u8>,
|
||||
/// Address for the next byte.
|
||||
byte_addr: u32,
|
||||
/// Internal index for the next byte.
|
||||
/// Normally in range `[0, BLOCK_SIZE - 1]`.
|
||||
///
|
||||
/// `index = BLOCK_SIZE` means that the `buffer` is invalid for the current `byte_addr`,
|
||||
/// the next `fill_buf` call would fill the buffer.
|
||||
index: usize,
|
||||
/// Dirty flag indicating the content has to be flushed.
|
||||
dirty: bool,
|
||||
/// Base offset for translation from logical address to physical address.
|
||||
offset: u32,
|
||||
}
|
||||
|
||||
#[derive(Copy, Clone)]
|
||||
#[allow(unused)]
|
||||
// Partition entry enum, normally we would use entry1.
|
||||
pub enum PartitionEntry {
|
||||
Entry1 = 0x1BE,
|
||||
Entry2 = 0x1CE,
|
||||
Entry3 = 0x1DE,
|
||||
Entry4 = 0x1EE,
|
||||
}
|
||||
|
||||
impl SdReader {
|
||||
/// Create SdReader from SdCard
|
||||
pub fn new(sd: SdCard) -> SdReader {
|
||||
let mut vec: Vec<u8> = Vec::with_capacity(BLOCK_SIZE);
|
||||
unsafe {
|
||||
vec.set_len(vec.capacity());
|
||||
}
|
||||
SdReader {
|
||||
sd,
|
||||
buffer: vec,
|
||||
byte_addr: 0,
|
||||
index: BLOCK_SIZE,
|
||||
dirty: false,
|
||||
offset: 0,
|
||||
}
|
||||
}
|
||||
|
||||
/// Internal read function for unaligned read.
|
||||
/// The read must not cross block boundary.
|
||||
fn read_unaligned(&mut self, buf: &mut [u8]) -> IoResult<usize> {
|
||||
if buf.len() == 0 {
|
||||
return Ok(0);
|
||||
}
|
||||
let filled_buffer = self.fill_buf()?;
|
||||
for (dest, src) in buf.iter_mut().zip(filled_buffer.iter()) {
|
||||
*dest = *src;
|
||||
}
|
||||
self.consume(buf.len());
|
||||
Ok(buf.len())
|
||||
}
|
||||
|
||||
/// Internal write function for unaligned write.
|
||||
/// The write must not cross block boundary.
|
||||
fn write_unaligned(&mut self, buf: &[u8]) -> IoResult<usize> {
|
||||
if buf.len() == 0 {
|
||||
return Ok(0);
|
||||
}
|
||||
// update buffer if needed, as we will flush the entire block later.
|
||||
self.fill_buf()?;
|
||||
self.dirty = true;
|
||||
let dest_buffer = &mut self.buffer[self.index..];
|
||||
for (src, dest) in buf.iter().zip(dest_buffer.iter_mut()) {
|
||||
*dest = *src;
|
||||
}
|
||||
self.consume(buf.len());
|
||||
Ok(buf.len())
|
||||
}
|
||||
|
||||
/// Split the slice into three segments, with the middle block-aligned.
|
||||
/// Alignment depends on the current `self.byte_addr` instead of the slice pointer address
|
||||
fn block_align<'b>(&self, buf: &'b [u8]) -> (&'b [u8], &'b [u8], &'b [u8]) {
|
||||
let head_len = BLOCK_SIZE - (self.byte_addr as usize % BLOCK_SIZE);
|
||||
if head_len > buf.len() {
|
||||
(buf, &[], &[])
|
||||
} else {
|
||||
let remaining_length = buf.len() - head_len;
|
||||
let mid_length = remaining_length - remaining_length % BLOCK_SIZE;
|
||||
let (head, remaining) = buf.split_at(head_len);
|
||||
let (mid, tail) = remaining.split_at(mid_length);
|
||||
(head, mid, tail)
|
||||
}
|
||||
}
|
||||
|
||||
/// Split the mutable slice into three segments, with the middle block-aligned.
|
||||
/// Alignment depends on the current `self.byte_addr` instead of the slice pointer address
|
||||
fn block_align_mut<'b>(&self, buf: &'b mut [u8]) -> (&'b mut [u8], &'b mut [u8], &'b mut [u8]) {
|
||||
let head_len = BLOCK_SIZE - (self.byte_addr as usize % BLOCK_SIZE);
|
||||
if head_len > buf.len() {
|
||||
(buf, &mut [], &mut [])
|
||||
} else {
|
||||
let remaining_length = buf.len() - head_len;
|
||||
let mid_length = remaining_length - remaining_length % BLOCK_SIZE;
|
||||
let (head, remaining) = buf.split_at_mut(head_len);
|
||||
let (mid, tail) = remaining.split_at_mut(mid_length);
|
||||
(head, mid, tail)
|
||||
}
|
||||
}
|
||||
|
||||
/// Invalidate the buffer, so later unaligned read/write would reload the buffer from SD card.
|
||||
fn invalidate_buffer(&mut self) {
|
||||
self.index = BLOCK_SIZE;
|
||||
}
|
||||
|
||||
/// Set the base offset of the SD card, to transform from physical address to logical address.
|
||||
fn set_base_offset(&mut self, offset: u32) -> IoResult<u64> {
|
||||
self.offset = offset;
|
||||
self.seek(SeekFrom::Start(0))
|
||||
}
|
||||
|
||||
/// Mount fatfs from partition entry, and return the fatfs object if success.
|
||||
/// This takes the ownership of self, so currently there is no way to recover from an error,
|
||||
/// except creating a new SD card instance.
|
||||
pub fn mount_fatfs(mut self, entry: PartitionEntry) -> IoResult<fatfs::FileSystem<Self>> {
|
||||
let mut buffer: [u8; 4] = [0; 4];
|
||||
self.seek(SeekFrom::Start(0x1FE))?;
|
||||
self.read_exact(&mut buffer[..2])?;
|
||||
// check MBR signature
|
||||
if buffer[..2] != MBR_SIGNATURE {
|
||||
return Err(Error::new(
|
||||
ErrorKind::InvalidData,
|
||||
"Incorrect signature for MBR sector.",
|
||||
));
|
||||
}
|
||||
// Read partition ID.
|
||||
self.seek(SeekFrom::Start(entry as u64 + 0x4))?;
|
||||
self.read_exact(&mut buffer[..1])?;
|
||||
debug!("Partition ID: {:0X}", buffer[0]);
|
||||
match buffer[0] {
|
||||
PARTID_FAT12 | PARTID_FAT16_LESS32M | PARTID_FAT16 |
|
||||
PARTID_FAT32 | PARTID_FAT32_LBA => {}
|
||||
_ => {
|
||||
return Err(Error::new(
|
||||
ErrorKind::InvalidData,
|
||||
"No FAT partition found for the specified entry.",
|
||||
));
|
||||
}
|
||||
}
|
||||
// Read LBA
|
||||
self.seek(SeekFrom::Current(0x3))?;
|
||||
self.read_exact(&mut buffer)?;
|
||||
let mut lba: u32 = 0;
|
||||
// Little endian
|
||||
for i in 0..4 {
|
||||
lba |= (buffer[i] as u32) << (i * 8);
|
||||
}
|
||||
// Set to logical address
|
||||
self.set_base_offset(lba * BLOCK_SIZE as u32)?;
|
||||
// setup fatfs
|
||||
fatfs::FileSystem::new(self, fatfs::FsOptions::new())
|
||||
}
|
||||
}
|
||||
|
||||
impl Read for SdReader {
|
||||
fn read(&mut self, buf: &mut [u8]) -> IoResult<usize> {
|
||||
let total_length = buf.len();
|
||||
let (a, b, c) = self.block_align_mut(buf);
|
||||
self.read_unaligned(a)?;
|
||||
if b.len() > 0 {
|
||||
// invalidate internal buffer
|
||||
self.invalidate_buffer();
|
||||
if let Err(_) = self.sd.read_block(
|
||||
self.byte_addr / BLOCK_SIZE as u32,
|
||||
(b.len() / BLOCK_SIZE) as u16,
|
||||
b,
|
||||
) {
|
||||
// we have to allow partial read, as per the trait required
|
||||
return Ok(a.len());
|
||||
}
|
||||
self.byte_addr += b.len() as u32;
|
||||
}
|
||||
if let Err(_) = self.read_unaligned(c) {
|
||||
// we have to allow partial read, as per the trait required
|
||||
return Ok(a.len() + b.len());
|
||||
}
|
||||
Ok(total_length)
|
||||
}
|
||||
}
|
||||
|
||||
impl BufRead for SdReader {
|
||||
fn fill_buf(&mut self) -> IoResult<&[u8]> {
|
||||
if self.index == BLOCK_SIZE {
|
||||
// flush the buffer if it is dirty before overwriting it with new data
|
||||
if self.dirty {
|
||||
self.flush()?;
|
||||
}
|
||||
// reload buffer
|
||||
self.sd
|
||||
.read_block(self.byte_addr / (BLOCK_SIZE as u32), 1, &mut self.buffer)
|
||||
.map_err(cmd_error_to_io_error)?;
|
||||
self.index = (self.byte_addr as usize) % BLOCK_SIZE;
|
||||
}
|
||||
Ok(&self.buffer[self.index..])
|
||||
}
|
||||
|
||||
fn consume(&mut self, amt: usize) {
|
||||
self.index += amt;
|
||||
self.byte_addr += amt as u32;
|
||||
}
|
||||
}
|
||||
|
||||
impl Write for SdReader {
|
||||
fn write(&mut self, buf: &[u8]) -> IoResult<usize> {
|
||||
let (a, b, c) = self.block_align(buf);
|
||||
self.write_unaligned(a)?;
|
||||
if b.len() > 0 {
|
||||
self.flush()?;
|
||||
self.invalidate_buffer();
|
||||
if let Err(_) = self.sd.write_block(
|
||||
self.byte_addr / BLOCK_SIZE as u32,
|
||||
(b.len() / BLOCK_SIZE) as u16,
|
||||
b,
|
||||
) {
|
||||
return Ok(a.len());
|
||||
}
|
||||
self.byte_addr += b.len() as u32;
|
||||
}
|
||||
if let Err(_) = self.write_unaligned(c) {
|
||||
return Ok(a.len() + b.len());
|
||||
}
|
||||
Ok(buf.len())
|
||||
}
|
||||
|
||||
fn flush(&mut self) -> IoResult<()> {
|
||||
if self.dirty {
|
||||
let block_addr = (self.byte_addr - self.index as u32) / (BLOCK_SIZE as u32);
|
||||
self.sd
|
||||
.write_block(block_addr, 1, &self.buffer)
|
||||
.map_err(cmd_error_to_io_error)?;
|
||||
self.dirty = false;
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
impl Seek for SdReader {
|
||||
fn seek(&mut self, pos: SeekFrom) -> IoResult<u64> {
|
||||
let raw_target = match pos {
|
||||
SeekFrom::Start(x) => self.offset as i64 + x as i64,
|
||||
SeekFrom::Current(x) => self.byte_addr as i64 + x,
|
||||
SeekFrom::End(_) => panic!("SD card does not support seek from end"),
|
||||
};
|
||||
if raw_target < self.offset as i64 || raw_target > core::u32::MAX as i64 {
|
||||
return Err(Error::new(ErrorKind::InvalidInput, "Invalid address"));
|
||||
}
|
||||
let target_byte_addr = raw_target as u32;
|
||||
let address_same_block =
|
||||
self.byte_addr / (BLOCK_SIZE as u32) == target_byte_addr / (BLOCK_SIZE as u32);
|
||||
// if the buffer was invalidated, we consider seek as different block
|
||||
let same_block = address_same_block && self.index != BLOCK_SIZE;
|
||||
if !same_block {
|
||||
self.flush()?;
|
||||
}
|
||||
self.byte_addr = target_byte_addr;
|
||||
self.index = if same_block {
|
||||
target_byte_addr as usize % BLOCK_SIZE
|
||||
} else {
|
||||
// invalidate the buffer as we moved to a different block
|
||||
BLOCK_SIZE
|
||||
};
|
||||
Ok((self.byte_addr - self.offset) as u64)
|
||||
}
|
||||
}
|
||||
|
||||
impl Drop for SdReader {
|
||||
fn drop(&mut self) {
|
||||
// just try to flush it, ignore error if any
|
||||
self.flush().unwrap_or(());
|
||||
}
|
||||
}
|
||||
@ -1,14 +0,0 @@
|
||||
[package]
|
||||
authors = ["M-Labs"]
|
||||
name = "core_io"
|
||||
version = "0.1.20200410"
|
||||
|
||||
[lib]
|
||||
name = "core_io"
|
||||
|
||||
[dependencies]
|
||||
memchr = { version = "2", default-features = false, optional = true }
|
||||
|
||||
[features]
|
||||
alloc = []
|
||||
collections = ["alloc", "memchr"]
|
||||
File diff suppressed because it is too large
Load Diff
@ -1,896 +0,0 @@
|
||||
use crate::io::prelude::*;
|
||||
|
||||
use core::cmp;
|
||||
use crate::io::{self, Error, ErrorKind, Initializer, SeekFrom};
|
||||
|
||||
#[cfg(feature = "collections")]
|
||||
use core::convert::TryInto;
|
||||
|
||||
#[cfg(feature="collections")]
|
||||
use collections::vec::Vec;
|
||||
|
||||
#[cfg(feature = "alloc")]
|
||||
use alloc::boxed::Box;
|
||||
|
||||
/// A `Cursor` wraps an in-memory buffer and provides it with a
|
||||
/// [`Seek`] implementation.
|
||||
///
|
||||
/// `Cursor`s are used with in-memory buffers, anything implementing
|
||||
/// `AsRef<[u8]>`, to allow them to implement [`Read`] and/or [`Write`],
|
||||
/// allowing these buffers to be used anywhere you might use a reader or writer
|
||||
/// that does actual I/O.
|
||||
///
|
||||
/// The standard library implements some I/O traits on various types which
|
||||
/// are commonly used as a buffer, like `Cursor<`[`Vec`]`<u8>>` and
|
||||
/// `Cursor<`[`&[u8]`][bytes]`>`.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// We may want to write bytes to a [`File`] in our production
|
||||
/// code, but use an in-memory buffer in our tests. We can do this with
|
||||
/// `Cursor`:
|
||||
///
|
||||
/// [`Seek`]: trait.Seek.html
|
||||
/// [`Read`]: ../../std/io/trait.Read.html
|
||||
/// [`Write`]: ../../std/io/trait.Write.html
|
||||
/// [`Vec`]: ../../std/vec/struct.Vec.html
|
||||
/// [bytes]: ../../std/primitive.slice.html
|
||||
/// [`File`]: ../fs/struct.File.html
|
||||
///
|
||||
/// ```no_run
|
||||
/// use std::io::prelude::*;
|
||||
/// use std::io::{self, SeekFrom};
|
||||
/// use std::fs::File;
|
||||
///
|
||||
/// // a library function we've written
|
||||
/// fn write_ten_bytes_at_end<W: Write + Seek>(writer: &mut W) -> io::Result<()> {
|
||||
/// writer.seek(SeekFrom::End(-10))?;
|
||||
///
|
||||
/// for i in 0..10 {
|
||||
/// writer.write(&[i])?;
|
||||
/// }
|
||||
///
|
||||
/// // all went well
|
||||
/// Ok(())
|
||||
/// }
|
||||
///
|
||||
/// # fn foo() -> io::Result<()> {
|
||||
/// // Here's some code that uses this library function.
|
||||
/// //
|
||||
/// // We might want to use a BufReader here for efficiency, but let's
|
||||
/// // keep this example focused.
|
||||
/// let mut file = File::create("foo.txt")?;
|
||||
///
|
||||
/// write_ten_bytes_at_end(&mut file)?;
|
||||
/// # Ok(())
|
||||
/// # }
|
||||
///
|
||||
/// // now let's write a test
|
||||
/// #[test]
|
||||
/// fn test_writes_bytes() {
|
||||
/// // setting up a real File is much slower than an in-memory buffer,
|
||||
/// // let's use a cursor instead
|
||||
/// use std::io::Cursor;
|
||||
/// let mut buff = Cursor::new(vec![0; 15]);
|
||||
///
|
||||
/// write_ten_bytes_at_end(&mut buff).unwrap();
|
||||
///
|
||||
/// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
|
||||
/// }
|
||||
/// ```
|
||||
#[derive(Clone, Debug, Default, Eq, PartialEq)]
|
||||
pub struct Cursor<T> {
|
||||
inner: T,
|
||||
pos: u64,
|
||||
}
|
||||
|
||||
impl<T> Cursor<T> {
|
||||
/// Creates a new cursor wrapping the provided underlying in-memory buffer.
|
||||
///
|
||||
/// Cursor initial position is `0` even if underlying buffer (e.g., `Vec`)
|
||||
/// is not empty. So writing to cursor starts with overwriting `Vec`
|
||||
/// content, not with appending to it.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use std::io::Cursor;
|
||||
///
|
||||
/// let buff = Cursor::new(Vec::new());
|
||||
/// # fn force_inference(_: &Cursor<Vec<u8>>) {}
|
||||
/// # force_inference(&buff);
|
||||
/// ```
|
||||
pub fn new(inner: T) -> Cursor<T> {
|
||||
Cursor { pos: 0, inner }
|
||||
}
|
||||
|
||||
/// Consumes this cursor, returning the underlying value.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use std::io::Cursor;
|
||||
///
|
||||
/// let buff = Cursor::new(Vec::new());
|
||||
/// # fn force_inference(_: &Cursor<Vec<u8>>) {}
|
||||
/// # force_inference(&buff);
|
||||
///
|
||||
/// let vec = buff.into_inner();
|
||||
/// ```
|
||||
pub fn into_inner(self) -> T {
|
||||
self.inner
|
||||
}
|
||||
|
||||
/// Gets a reference to the underlying value in this cursor.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use std::io::Cursor;
|
||||
///
|
||||
/// let buff = Cursor::new(Vec::new());
|
||||
/// # fn force_inference(_: &Cursor<Vec<u8>>) {}
|
||||
/// # force_inference(&buff);
|
||||
///
|
||||
/// let reference = buff.get_ref();
|
||||
/// ```
|
||||
pub fn get_ref(&self) -> &T {
|
||||
&self.inner
|
||||
}
|
||||
|
||||
/// Gets a mutable reference to the underlying value in this cursor.
|
||||
///
|
||||
/// Care should be taken to avoid modifying the internal I/O state of the
|
||||
/// underlying value as it may corrupt this cursor's position.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use std::io::Cursor;
|
||||
///
|
||||
/// let mut buff = Cursor::new(Vec::new());
|
||||
/// # fn force_inference(_: &Cursor<Vec<u8>>) {}
|
||||
/// # force_inference(&buff);
|
||||
///
|
||||
/// let reference = buff.get_mut();
|
||||
/// ```
|
||||
pub fn get_mut(&mut self) -> &mut T {
|
||||
&mut self.inner
|
||||
}
|
||||
|
||||
/// Returns the current position of this cursor.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use std::io::Cursor;
|
||||
/// use std::io::prelude::*;
|
||||
/// use std::io::SeekFrom;
|
||||
///
|
||||
/// let mut buff = Cursor::new(vec![1, 2, 3, 4, 5]);
|
||||
///
|
||||
/// assert_eq!(buff.position(), 0);
|
||||
///
|
||||
/// buff.seek(SeekFrom::Current(2)).unwrap();
|
||||
/// assert_eq!(buff.position(), 2);
|
||||
///
|
||||
/// buff.seek(SeekFrom::Current(-1)).unwrap();
|
||||
/// assert_eq!(buff.position(), 1);
|
||||
/// ```
|
||||
pub fn position(&self) -> u64 {
|
||||
self.pos
|
||||
}
|
||||
|
||||
/// Sets the position of this cursor.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use std::io::Cursor;
|
||||
///
|
||||
/// let mut buff = Cursor::new(vec![1, 2, 3, 4, 5]);
|
||||
///
|
||||
/// assert_eq!(buff.position(), 0);
|
||||
///
|
||||
/// buff.set_position(2);
|
||||
/// assert_eq!(buff.position(), 2);
|
||||
///
|
||||
/// buff.set_position(4);
|
||||
/// assert_eq!(buff.position(), 4);
|
||||
/// ```
|
||||
pub fn set_position(&mut self, pos: u64) {
|
||||
self.pos = pos;
|
||||
}
|
||||
}
|
||||
|
||||
impl<T> io::Seek for Cursor<T>
|
||||
where
|
||||
T: AsRef<[u8]>,
|
||||
{
|
||||
fn seek(&mut self, style: SeekFrom) -> io::Result<u64> {
|
||||
let (base_pos, offset) = match style {
|
||||
SeekFrom::Start(n) => {
|
||||
self.pos = n;
|
||||
return Ok(n);
|
||||
}
|
||||
SeekFrom::End(n) => (self.inner.as_ref().len() as u64, n),
|
||||
SeekFrom::Current(n) => (self.pos, n),
|
||||
};
|
||||
let new_pos = if offset >= 0 {
|
||||
base_pos.checked_add(offset as u64)
|
||||
} else {
|
||||
base_pos.checked_sub((offset.wrapping_neg()) as u64)
|
||||
};
|
||||
match new_pos {
|
||||
Some(n) => {
|
||||
self.pos = n;
|
||||
Ok(self.pos)
|
||||
}
|
||||
None => Err(Error::new(
|
||||
ErrorKind::InvalidInput,
|
||||
"invalid seek to a negative or overflowing position",
|
||||
)),
|
||||
}
|
||||
}
|
||||
|
||||
fn stream_len(&mut self) -> io::Result<u64> {
|
||||
Ok(self.inner.as_ref().len() as u64)
|
||||
}
|
||||
|
||||
fn stream_position(&mut self) -> io::Result<u64> {
|
||||
Ok(self.pos)
|
||||
}
|
||||
}
|
||||
|
||||
impl<T> Read for Cursor<T>
|
||||
where
|
||||
T: AsRef<[u8]>,
|
||||
{
|
||||
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
|
||||
let n = Read::read(&mut self.get_ref().as_ref(), buf)?;
|
||||
self.pos += n as u64;
|
||||
Ok(n)
|
||||
}
|
||||
|
||||
fn read_exact(&mut self, buf: &mut [u8]) -> io::Result<()> {
|
||||
let n = buf.len();
|
||||
Read::read_exact(&mut self.get_ref().as_ref(), buf)?;
|
||||
self.pos += n as u64;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
#[inline]
|
||||
unsafe fn initializer(&self) -> Initializer {
|
||||
Initializer::nop()
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(feature = "collections")]
|
||||
impl<T> BufRead for Cursor<T>
|
||||
where
|
||||
T: AsRef<[u8]>,
|
||||
{
|
||||
fn fill_buf(&mut self) -> io::Result<&[u8]> {
|
||||
let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64);
|
||||
Ok(&self.inner.as_ref()[(amt as usize)..])
|
||||
}
|
||||
fn consume(&mut self, amt: usize) {
|
||||
self.pos += amt as u64;
|
||||
}
|
||||
}
|
||||
|
||||
// Non-resizing write implementation
|
||||
#[inline]
|
||||
fn slice_write(pos_mut: &mut u64, slice: &mut [u8], buf: &[u8]) -> io::Result<usize> {
|
||||
let pos = cmp::min(*pos_mut, slice.len() as u64);
|
||||
let amt = (&mut slice[(pos as usize)..]).write(buf)?;
|
||||
*pos_mut += amt as u64;
|
||||
Ok(amt)
|
||||
}
|
||||
|
||||
// Resizing write implementation
|
||||
#[cfg(feature = "collections")]
|
||||
fn vec_write(pos_mut: &mut u64, vec: &mut Vec<u8>, buf: &[u8]) -> io::Result<usize> {
|
||||
let pos: usize = (*pos_mut).try_into().map_err(|_| {
|
||||
Error::new(
|
||||
ErrorKind::InvalidInput,
|
||||
"cursor position exceeds maximum possible vector length",
|
||||
)
|
||||
})?;
|
||||
// Make sure the internal buffer is as least as big as where we
|
||||
// currently are
|
||||
let len = vec.len();
|
||||
if len < pos {
|
||||
// use `resize` so that the zero filling is as efficient as possible
|
||||
vec.resize(pos, 0);
|
||||
}
|
||||
// Figure out what bytes will be used to overwrite what's currently
|
||||
// there (left), and what will be appended on the end (right)
|
||||
{
|
||||
let space = vec.len() - pos;
|
||||
let (left, right) = buf.split_at(cmp::min(space, buf.len()));
|
||||
vec[pos..pos + left.len()].copy_from_slice(left);
|
||||
vec.extend_from_slice(right);
|
||||
}
|
||||
|
||||
// Bump us forward
|
||||
*pos_mut = (pos + buf.len()) as u64;
|
||||
Ok(buf.len())
|
||||
}
|
||||
|
||||
impl Write for Cursor<&mut [u8]> {
|
||||
#[inline]
|
||||
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
|
||||
slice_write(&mut self.pos, self.inner, buf)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn flush(&mut self) -> io::Result<()> {
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(feature = "collections")]
|
||||
impl Write for Cursor<&mut Vec<u8>> {
|
||||
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
|
||||
vec_write(&mut self.pos, self.inner, buf)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn flush(&mut self) -> io::Result<()> {
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(feature = "collections")]
|
||||
impl Write for Cursor<Vec<u8>> {
|
||||
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
|
||||
vec_write(&mut self.pos, &mut self.inner, buf)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn flush(&mut self) -> io::Result<()> {
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(feature = "alloc")]
|
||||
impl Write for Cursor<Box<[u8]>> {
|
||||
#[inline]
|
||||
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
|
||||
slice_write(&mut self.pos, &mut self.inner, buf)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn flush(&mut self) -> io::Result<()> {
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use crate::io::prelude::*;
|
||||
use crate::io::{Cursor, IoSlice, IoSliceMut, SeekFrom};
|
||||
|
||||
#[test]
|
||||
fn test_vec_writer() {
|
||||
let mut writer = Vec::new();
|
||||
assert_eq!(writer.write(&[0]).unwrap(), 1);
|
||||
assert_eq!(writer.write(&[1, 2, 3]).unwrap(), 3);
|
||||
assert_eq!(writer.write(&[4, 5, 6, 7]).unwrap(), 4);
|
||||
assert_eq!(
|
||||
writer
|
||||
.write_vectored(&[IoSlice::new(&[]), IoSlice::new(&[8, 9]), IoSlice::new(&[10])],)
|
||||
.unwrap(),
|
||||
3
|
||||
);
|
||||
let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
|
||||
assert_eq!(writer, b);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_mem_writer() {
|
||||
let mut writer = Cursor::new(Vec::new());
|
||||
assert_eq!(writer.write(&[0]).unwrap(), 1);
|
||||
assert_eq!(writer.write(&[1, 2, 3]).unwrap(), 3);
|
||||
assert_eq!(writer.write(&[4, 5, 6, 7]).unwrap(), 4);
|
||||
assert_eq!(
|
||||
writer
|
||||
.write_vectored(&[IoSlice::new(&[]), IoSlice::new(&[8, 9]), IoSlice::new(&[10])],)
|
||||
.unwrap(),
|
||||
3
|
||||
);
|
||||
let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
|
||||
assert_eq!(&writer.get_ref()[..], b);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_mem_mut_writer() {
|
||||
let mut vec = Vec::new();
|
||||
let mut writer = Cursor::new(&mut vec);
|
||||
assert_eq!(writer.write(&[0]).unwrap(), 1);
|
||||
assert_eq!(writer.write(&[1, 2, 3]).unwrap(), 3);
|
||||
assert_eq!(writer.write(&[4, 5, 6, 7]).unwrap(), 4);
|
||||
assert_eq!(
|
||||
writer
|
||||
.write_vectored(&[IoSlice::new(&[]), IoSlice::new(&[8, 9]), IoSlice::new(&[10])],)
|
||||
.unwrap(),
|
||||
3
|
||||
);
|
||||
let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
|
||||
assert_eq!(&writer.get_ref()[..], b);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_box_slice_writer() {
|
||||
let mut writer = Cursor::new(vec![0u8; 9].into_boxed_slice());
|
||||
assert_eq!(writer.position(), 0);
|
||||
assert_eq!(writer.write(&[0]).unwrap(), 1);
|
||||
assert_eq!(writer.position(), 1);
|
||||
assert_eq!(writer.write(&[1, 2, 3]).unwrap(), 3);
|
||||
assert_eq!(writer.write(&[4, 5, 6, 7]).unwrap(), 4);
|
||||
assert_eq!(writer.position(), 8);
|
||||
assert_eq!(writer.write(&[]).unwrap(), 0);
|
||||
assert_eq!(writer.position(), 8);
|
||||
|
||||
assert_eq!(writer.write(&[8, 9]).unwrap(), 1);
|
||||
assert_eq!(writer.write(&[10]).unwrap(), 0);
|
||||
let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7, 8];
|
||||
assert_eq!(&**writer.get_ref(), b);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_box_slice_writer_vectored() {
|
||||
let mut writer = Cursor::new(vec![0u8; 9].into_boxed_slice());
|
||||
assert_eq!(writer.position(), 0);
|
||||
assert_eq!(writer.write_vectored(&[IoSlice::new(&[0])]).unwrap(), 1);
|
||||
assert_eq!(writer.position(), 1);
|
||||
assert_eq!(
|
||||
writer
|
||||
.write_vectored(&[IoSlice::new(&[1, 2, 3]), IoSlice::new(&[4, 5, 6, 7]),])
|
||||
.unwrap(),
|
||||
7,
|
||||
);
|
||||
assert_eq!(writer.position(), 8);
|
||||
assert_eq!(writer.write_vectored(&[]).unwrap(), 0);
|
||||
assert_eq!(writer.position(), 8);
|
||||
|
||||
assert_eq!(writer.write_vectored(&[IoSlice::new(&[8, 9])]).unwrap(), 1);
|
||||
assert_eq!(writer.write_vectored(&[IoSlice::new(&[10])]).unwrap(), 0);
|
||||
let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7, 8];
|
||||
assert_eq!(&**writer.get_ref(), b);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_buf_writer() {
|
||||
let mut buf = [0 as u8; 9];
|
||||
{
|
||||
let mut writer = Cursor::new(&mut buf[..]);
|
||||
assert_eq!(writer.position(), 0);
|
||||
assert_eq!(writer.write(&[0]).unwrap(), 1);
|
||||
assert_eq!(writer.position(), 1);
|
||||
assert_eq!(writer.write(&[1, 2, 3]).unwrap(), 3);
|
||||
assert_eq!(writer.write(&[4, 5, 6, 7]).unwrap(), 4);
|
||||
assert_eq!(writer.position(), 8);
|
||||
assert_eq!(writer.write(&[]).unwrap(), 0);
|
||||
assert_eq!(writer.position(), 8);
|
||||
|
||||
assert_eq!(writer.write(&[8, 9]).unwrap(), 1);
|
||||
assert_eq!(writer.write(&[10]).unwrap(), 0);
|
||||
}
|
||||
let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7, 8];
|
||||
assert_eq!(buf, b);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_buf_writer_vectored() {
|
||||
let mut buf = [0 as u8; 9];
|
||||
{
|
||||
let mut writer = Cursor::new(&mut buf[..]);
|
||||
assert_eq!(writer.position(), 0);
|
||||
assert_eq!(writer.write_vectored(&[IoSlice::new(&[0])]).unwrap(), 1);
|
||||
assert_eq!(writer.position(), 1);
|
||||
assert_eq!(
|
||||
writer
|
||||
.write_vectored(&[IoSlice::new(&[1, 2, 3]), IoSlice::new(&[4, 5, 6, 7])],)
|
||||
.unwrap(),
|
||||
7,
|
||||
);
|
||||
assert_eq!(writer.position(), 8);
|
||||
assert_eq!(writer.write_vectored(&[]).unwrap(), 0);
|
||||
assert_eq!(writer.position(), 8);
|
||||
|
||||
assert_eq!(writer.write_vectored(&[IoSlice::new(&[8, 9])]).unwrap(), 1);
|
||||
assert_eq!(writer.write_vectored(&[IoSlice::new(&[10])]).unwrap(), 0);
|
||||
}
|
||||
let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7, 8];
|
||||
assert_eq!(buf, b);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_buf_writer_seek() {
|
||||
let mut buf = [0 as u8; 8];
|
||||
{
|
||||
let mut writer = Cursor::new(&mut buf[..]);
|
||||
assert_eq!(writer.position(), 0);
|
||||
assert_eq!(writer.write(&[1]).unwrap(), 1);
|
||||
assert_eq!(writer.position(), 1);
|
||||
|
||||
assert_eq!(writer.seek(SeekFrom::Start(2)).unwrap(), 2);
|
||||
assert_eq!(writer.position(), 2);
|
||||
assert_eq!(writer.write(&[2]).unwrap(), 1);
|
||||
assert_eq!(writer.position(), 3);
|
||||
|
||||
assert_eq!(writer.seek(SeekFrom::Current(-2)).unwrap(), 1);
|
||||
assert_eq!(writer.position(), 1);
|
||||
assert_eq!(writer.write(&[3]).unwrap(), 1);
|
||||
assert_eq!(writer.position(), 2);
|
||||
|
||||
assert_eq!(writer.seek(SeekFrom::End(-1)).unwrap(), 7);
|
||||
assert_eq!(writer.position(), 7);
|
||||
assert_eq!(writer.write(&[4]).unwrap(), 1);
|
||||
assert_eq!(writer.position(), 8);
|
||||
}
|
||||
let b: &[_] = &[1, 3, 2, 0, 0, 0, 0, 4];
|
||||
assert_eq!(buf, b);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_buf_writer_error() {
|
||||
let mut buf = [0 as u8; 2];
|
||||
let mut writer = Cursor::new(&mut buf[..]);
|
||||
assert_eq!(writer.write(&[0]).unwrap(), 1);
|
||||
assert_eq!(writer.write(&[0, 0]).unwrap(), 1);
|
||||
assert_eq!(writer.write(&[0, 0]).unwrap(), 0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_mem_reader() {
|
||||
let mut reader = Cursor::new(vec![0, 1, 2, 3, 4, 5, 6, 7]);
|
||||
let mut buf = [];
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 0);
|
||||
assert_eq!(reader.position(), 0);
|
||||
let mut buf = [0];
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 1);
|
||||
assert_eq!(reader.position(), 1);
|
||||
let b: &[_] = &[0];
|
||||
assert_eq!(buf, b);
|
||||
let mut buf = [0; 4];
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 4);
|
||||
assert_eq!(reader.position(), 5);
|
||||
let b: &[_] = &[1, 2, 3, 4];
|
||||
assert_eq!(buf, b);
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 3);
|
||||
let b: &[_] = &[5, 6, 7];
|
||||
assert_eq!(&buf[..3], b);
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_mem_reader_vectored() {
|
||||
let mut reader = Cursor::new(vec![0, 1, 2, 3, 4, 5, 6, 7]);
|
||||
let mut buf = [];
|
||||
assert_eq!(reader.read_vectored(&mut [IoSliceMut::new(&mut buf)]).unwrap(), 0);
|
||||
assert_eq!(reader.position(), 0);
|
||||
let mut buf = [0];
|
||||
assert_eq!(
|
||||
reader
|
||||
.read_vectored(&mut [IoSliceMut::new(&mut []), IoSliceMut::new(&mut buf),])
|
||||
.unwrap(),
|
||||
1,
|
||||
);
|
||||
assert_eq!(reader.position(), 1);
|
||||
let b: &[_] = &[0];
|
||||
assert_eq!(buf, b);
|
||||
let mut buf1 = [0; 4];
|
||||
let mut buf2 = [0; 4];
|
||||
assert_eq!(
|
||||
reader
|
||||
.read_vectored(&mut [IoSliceMut::new(&mut buf1), IoSliceMut::new(&mut buf2),])
|
||||
.unwrap(),
|
||||
7,
|
||||
);
|
||||
let b1: &[_] = &[1, 2, 3, 4];
|
||||
let b2: &[_] = &[5, 6, 7];
|
||||
assert_eq!(buf1, b1);
|
||||
assert_eq!(&buf2[..3], b2);
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_boxed_slice_reader() {
|
||||
let mut reader = Cursor::new(vec![0, 1, 2, 3, 4, 5, 6, 7].into_boxed_slice());
|
||||
let mut buf = [];
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 0);
|
||||
assert_eq!(reader.position(), 0);
|
||||
let mut buf = [0];
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 1);
|
||||
assert_eq!(reader.position(), 1);
|
||||
let b: &[_] = &[0];
|
||||
assert_eq!(buf, b);
|
||||
let mut buf = [0; 4];
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 4);
|
||||
assert_eq!(reader.position(), 5);
|
||||
let b: &[_] = &[1, 2, 3, 4];
|
||||
assert_eq!(buf, b);
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 3);
|
||||
let b: &[_] = &[5, 6, 7];
|
||||
assert_eq!(&buf[..3], b);
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_boxed_slice_reader_vectored() {
|
||||
let mut reader = Cursor::new(vec![0, 1, 2, 3, 4, 5, 6, 7].into_boxed_slice());
|
||||
let mut buf = [];
|
||||
assert_eq!(reader.read_vectored(&mut [IoSliceMut::new(&mut buf)]).unwrap(), 0);
|
||||
assert_eq!(reader.position(), 0);
|
||||
let mut buf = [0];
|
||||
assert_eq!(
|
||||
reader
|
||||
.read_vectored(&mut [IoSliceMut::new(&mut []), IoSliceMut::new(&mut buf),])
|
||||
.unwrap(),
|
||||
1,
|
||||
);
|
||||
assert_eq!(reader.position(), 1);
|
||||
let b: &[_] = &[0];
|
||||
assert_eq!(buf, b);
|
||||
let mut buf1 = [0; 4];
|
||||
let mut buf2 = [0; 4];
|
||||
assert_eq!(
|
||||
reader
|
||||
.read_vectored(&mut [IoSliceMut::new(&mut buf1), IoSliceMut::new(&mut buf2)],)
|
||||
.unwrap(),
|
||||
7,
|
||||
);
|
||||
let b1: &[_] = &[1, 2, 3, 4];
|
||||
let b2: &[_] = &[5, 6, 7];
|
||||
assert_eq!(buf1, b1);
|
||||
assert_eq!(&buf2[..3], b2);
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn read_to_end() {
|
||||
let mut reader = Cursor::new(vec![0, 1, 2, 3, 4, 5, 6, 7]);
|
||||
let mut v = Vec::new();
|
||||
reader.read_to_end(&mut v).unwrap();
|
||||
assert_eq!(v, [0, 1, 2, 3, 4, 5, 6, 7]);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_slice_reader() {
|
||||
let in_buf = vec![0, 1, 2, 3, 4, 5, 6, 7];
|
||||
let reader = &mut &in_buf[..];
|
||||
let mut buf = [];
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 0);
|
||||
let mut buf = [0];
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 1);
|
||||
assert_eq!(reader.len(), 7);
|
||||
let b: &[_] = &[0];
|
||||
assert_eq!(&buf[..], b);
|
||||
let mut buf = [0; 4];
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 4);
|
||||
assert_eq!(reader.len(), 3);
|
||||
let b: &[_] = &[1, 2, 3, 4];
|
||||
assert_eq!(&buf[..], b);
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 3);
|
||||
let b: &[_] = &[5, 6, 7];
|
||||
assert_eq!(&buf[..3], b);
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_slice_reader_vectored() {
|
||||
let in_buf = vec![0, 1, 2, 3, 4, 5, 6, 7];
|
||||
let reader = &mut &in_buf[..];
|
||||
let mut buf = [];
|
||||
assert_eq!(reader.read_vectored(&mut [IoSliceMut::new(&mut buf)]).unwrap(), 0);
|
||||
let mut buf = [0];
|
||||
assert_eq!(
|
||||
reader
|
||||
.read_vectored(&mut [IoSliceMut::new(&mut []), IoSliceMut::new(&mut buf),])
|
||||
.unwrap(),
|
||||
1,
|
||||
);
|
||||
assert_eq!(reader.len(), 7);
|
||||
let b: &[_] = &[0];
|
||||
assert_eq!(buf, b);
|
||||
let mut buf1 = [0; 4];
|
||||
let mut buf2 = [0; 4];
|
||||
assert_eq!(
|
||||
reader
|
||||
.read_vectored(&mut [IoSliceMut::new(&mut buf1), IoSliceMut::new(&mut buf2)],)
|
||||
.unwrap(),
|
||||
7,
|
||||
);
|
||||
let b1: &[_] = &[1, 2, 3, 4];
|
||||
let b2: &[_] = &[5, 6, 7];
|
||||
assert_eq!(buf1, b1);
|
||||
assert_eq!(&buf2[..3], b2);
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_read_exact() {
|
||||
let in_buf = vec![0, 1, 2, 3, 4, 5, 6, 7];
|
||||
let reader = &mut &in_buf[..];
|
||||
let mut buf = [];
|
||||
assert!(reader.read_exact(&mut buf).is_ok());
|
||||
let mut buf = [8];
|
||||
assert!(reader.read_exact(&mut buf).is_ok());
|
||||
assert_eq!(buf[0], 0);
|
||||
assert_eq!(reader.len(), 7);
|
||||
let mut buf = [0, 0, 0, 0, 0, 0, 0];
|
||||
assert!(reader.read_exact(&mut buf).is_ok());
|
||||
assert_eq!(buf, [1, 2, 3, 4, 5, 6, 7]);
|
||||
assert_eq!(reader.len(), 0);
|
||||
let mut buf = [0];
|
||||
assert!(reader.read_exact(&mut buf).is_err());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_buf_reader() {
|
||||
let in_buf = vec![0, 1, 2, 3, 4, 5, 6, 7];
|
||||
let mut reader = Cursor::new(&in_buf[..]);
|
||||
let mut buf = [];
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 0);
|
||||
assert_eq!(reader.position(), 0);
|
||||
let mut buf = [0];
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 1);
|
||||
assert_eq!(reader.position(), 1);
|
||||
let b: &[_] = &[0];
|
||||
assert_eq!(buf, b);
|
||||
let mut buf = [0; 4];
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 4);
|
||||
assert_eq!(reader.position(), 5);
|
||||
let b: &[_] = &[1, 2, 3, 4];
|
||||
assert_eq!(buf, b);
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 3);
|
||||
let b: &[_] = &[5, 6, 7];
|
||||
assert_eq!(&buf[..3], b);
|
||||
assert_eq!(reader.read(&mut buf).unwrap(), 0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn seek_past_end() {
|
||||
let buf = [0xff];
|
||||
let mut r = Cursor::new(&buf[..]);
|
||||
assert_eq!(r.seek(SeekFrom::Start(10)).unwrap(), 10);
|
||||
assert_eq!(r.read(&mut [0]).unwrap(), 0);
|
||||
|
||||
let mut r = Cursor::new(vec![10]);
|
||||
assert_eq!(r.seek(SeekFrom::Start(10)).unwrap(), 10);
|
||||
assert_eq!(r.read(&mut [0]).unwrap(), 0);
|
||||
|
||||
let mut buf = [0];
|
||||
let mut r = Cursor::new(&mut buf[..]);
|
||||
assert_eq!(r.seek(SeekFrom::Start(10)).unwrap(), 10);
|
||||
assert_eq!(r.write(&[3]).unwrap(), 0);
|
||||
|
||||
let mut r = Cursor::new(vec![10].into_boxed_slice());
|
||||
assert_eq!(r.seek(SeekFrom::Start(10)).unwrap(), 10);
|
||||
assert_eq!(r.write(&[3]).unwrap(), 0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn seek_past_i64() {
|
||||
let buf = [0xff];
|
||||
let mut r = Cursor::new(&buf[..]);
|
||||
assert_eq!(r.seek(SeekFrom::Start(6)).unwrap(), 6);
|
||||
assert_eq!(r.seek(SeekFrom::Current(0x7ffffffffffffff0)).unwrap(), 0x7ffffffffffffff6);
|
||||
assert_eq!(r.seek(SeekFrom::Current(0x10)).unwrap(), 0x8000000000000006);
|
||||
assert_eq!(r.seek(SeekFrom::Current(0)).unwrap(), 0x8000000000000006);
|
||||
assert!(r.seek(SeekFrom::Current(0x7ffffffffffffffd)).is_err());
|
||||
assert_eq!(r.seek(SeekFrom::Current(-0x8000000000000000)).unwrap(), 6);
|
||||
|
||||
let mut r = Cursor::new(vec![10]);
|
||||
assert_eq!(r.seek(SeekFrom::Start(6)).unwrap(), 6);
|
||||
assert_eq!(r.seek(SeekFrom::Current(0x7ffffffffffffff0)).unwrap(), 0x7ffffffffffffff6);
|
||||
assert_eq!(r.seek(SeekFrom::Current(0x10)).unwrap(), 0x8000000000000006);
|
||||
assert_eq!(r.seek(SeekFrom::Current(0)).unwrap(), 0x8000000000000006);
|
||||
assert!(r.seek(SeekFrom::Current(0x7ffffffffffffffd)).is_err());
|
||||
assert_eq!(r.seek(SeekFrom::Current(-0x8000000000000000)).unwrap(), 6);
|
||||
|
||||
let mut buf = [0];
|
||||
let mut r = Cursor::new(&mut buf[..]);
|
||||
assert_eq!(r.seek(SeekFrom::Start(6)).unwrap(), 6);
|
||||
assert_eq!(r.seek(SeekFrom::Current(0x7ffffffffffffff0)).unwrap(), 0x7ffffffffffffff6);
|
||||
assert_eq!(r.seek(SeekFrom::Current(0x10)).unwrap(), 0x8000000000000006);
|
||||
assert_eq!(r.seek(SeekFrom::Current(0)).unwrap(), 0x8000000000000006);
|
||||
assert!(r.seek(SeekFrom::Current(0x7ffffffffffffffd)).is_err());
|
||||
assert_eq!(r.seek(SeekFrom::Current(-0x8000000000000000)).unwrap(), 6);
|
||||
|
||||
let mut r = Cursor::new(vec![10].into_boxed_slice());
|
||||
assert_eq!(r.seek(SeekFrom::Start(6)).unwrap(), 6);
|
||||
assert_eq!(r.seek(SeekFrom::Current(0x7ffffffffffffff0)).unwrap(), 0x7ffffffffffffff6);
|
||||
assert_eq!(r.seek(SeekFrom::Current(0x10)).unwrap(), 0x8000000000000006);
|
||||
assert_eq!(r.seek(SeekFrom::Current(0)).unwrap(), 0x8000000000000006);
|
||||
assert!(r.seek(SeekFrom::Current(0x7ffffffffffffffd)).is_err());
|
||||
assert_eq!(r.seek(SeekFrom::Current(-0x8000000000000000)).unwrap(), 6);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn seek_before_0() {
|
||||
let buf = [0xff];
|
||||
let mut r = Cursor::new(&buf[..]);
|
||||
assert!(r.seek(SeekFrom::End(-2)).is_err());
|
||||
|
||||
let mut r = Cursor::new(vec![10]);
|
||||
assert!(r.seek(SeekFrom::End(-2)).is_err());
|
||||
|
||||
let mut buf = [0];
|
||||
let mut r = Cursor::new(&mut buf[..]);
|
||||
assert!(r.seek(SeekFrom::End(-2)).is_err());
|
||||
|
||||
let mut r = Cursor::new(vec![10].into_boxed_slice());
|
||||
assert!(r.seek(SeekFrom::End(-2)).is_err());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_seekable_mem_writer() {
|
||||
let mut writer = Cursor::new(Vec::<u8>::new());
|
||||
assert_eq!(writer.position(), 0);
|
||||
assert_eq!(writer.write(&[0]).unwrap(), 1);
|
||||
assert_eq!(writer.position(), 1);
|
||||
assert_eq!(writer.write(&[1, 2, 3]).unwrap(), 3);
|
||||
assert_eq!(writer.write(&[4, 5, 6, 7]).unwrap(), 4);
|
||||
assert_eq!(writer.position(), 8);
|
||||
let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7];
|
||||
assert_eq!(&writer.get_ref()[..], b);
|
||||
|
||||
assert_eq!(writer.seek(SeekFrom::Start(0)).unwrap(), 0);
|
||||
assert_eq!(writer.position(), 0);
|
||||
assert_eq!(writer.write(&[3, 4]).unwrap(), 2);
|
||||
let b: &[_] = &[3, 4, 2, 3, 4, 5, 6, 7];
|
||||
assert_eq!(&writer.get_ref()[..], b);
|
||||
|
||||
assert_eq!(writer.seek(SeekFrom::Current(1)).unwrap(), 3);
|
||||
assert_eq!(writer.write(&[0, 1]).unwrap(), 2);
|
||||
let b: &[_] = &[3, 4, 2, 0, 1, 5, 6, 7];
|
||||
assert_eq!(&writer.get_ref()[..], b);
|
||||
|
||||
assert_eq!(writer.seek(SeekFrom::End(-1)).unwrap(), 7);
|
||||
assert_eq!(writer.write(&[1, 2]).unwrap(), 2);
|
||||
let b: &[_] = &[3, 4, 2, 0, 1, 5, 6, 1, 2];
|
||||
assert_eq!(&writer.get_ref()[..], b);
|
||||
|
||||
assert_eq!(writer.seek(SeekFrom::End(1)).unwrap(), 10);
|
||||
assert_eq!(writer.write(&[1]).unwrap(), 1);
|
||||
let b: &[_] = &[3, 4, 2, 0, 1, 5, 6, 1, 2, 0, 1];
|
||||
assert_eq!(&writer.get_ref()[..], b);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn vec_seek_past_end() {
|
||||
let mut r = Cursor::new(Vec::new());
|
||||
assert_eq!(r.seek(SeekFrom::Start(10)).unwrap(), 10);
|
||||
assert_eq!(r.write(&[3]).unwrap(), 1);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn vec_seek_before_0() {
|
||||
let mut r = Cursor::new(Vec::new());
|
||||
assert!(r.seek(SeekFrom::End(-2)).is_err());
|
||||
}
|
||||
|
||||
#[test]
|
||||
#[cfg(target_pointer_width = "32")]
|
||||
fn vec_seek_and_write_past_usize_max() {
|
||||
let mut c = Cursor::new(Vec::new());
|
||||
c.set_position(<usize>::max_value() as u64 + 1);
|
||||
assert!(c.write_all(&[1, 2, 3]).is_err());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_partial_eq() {
|
||||
assert_eq!(Cursor::new(Vec::<u8>::new()), Cursor::new(Vec::<u8>::new()));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_eq() {
|
||||
struct AssertEq<T: Eq>(pub T);
|
||||
|
||||
let _: AssertEq<Cursor<Vec<u8>>> = AssertEq(Cursor::new(Vec::new()));
|
||||
}
|
||||
}
|
||||
@ -1,551 +0,0 @@
|
||||
#[cfg(feature="alloc")] use alloc::boxed::Box;
|
||||
#[cfg(not(feature="alloc"))] use ::FakeBox as Box;
|
||||
use core::convert::Into;
|
||||
use core::fmt;
|
||||
use core::marker::{Send, Sync};
|
||||
use core::option::Option::{self, Some, None};
|
||||
use core::result;
|
||||
#[cfg(feature="collections")] use collections::string::String;
|
||||
#[cfg(not(feature="collections"))] use ::ErrorString as String;
|
||||
use core::convert::From;
|
||||
|
||||
/// A specialized [`Result`](../result/enum.Result.html) type for I/O
|
||||
/// operations.
|
||||
///
|
||||
/// This type is broadly used across [`std::io`] for any operation which may
|
||||
/// produce an error.
|
||||
///
|
||||
/// This typedef is generally used to avoid writing out [`io::Error`] directly and
|
||||
/// is otherwise a direct mapping to [`Result`].
|
||||
///
|
||||
/// While usual Rust style is to import types directly, aliases of [`Result`]
|
||||
/// often are not, to make it easier to distinguish between them. [`Result`] is
|
||||
/// generally assumed to be [`std::result::Result`][`Result`], and so users of this alias
|
||||
/// will generally use `io::Result` instead of shadowing the prelude's import
|
||||
/// of [`std::result::Result`][`Result`].
|
||||
///
|
||||
/// [`std::io`]: ../io/index.html
|
||||
/// [`io::Error`]: ../io/struct.Error.html
|
||||
/// [`Result`]: ../result/enum.Result.html
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// A convenience function that bubbles an `io::Result` to its caller:
|
||||
///
|
||||
/// ```
|
||||
/// use std::io;
|
||||
///
|
||||
/// fn get_string() -> io::Result<String> {
|
||||
/// let mut buffer = String::new();
|
||||
///
|
||||
/// io::stdin().read_line(&mut buffer)?;
|
||||
///
|
||||
/// Ok(buffer)
|
||||
/// }
|
||||
/// ```
|
||||
pub type Result<T> = result::Result<T, Error>;
|
||||
|
||||
/// The error type for I/O operations of the [`Read`], [`Write`], [`Seek`], and
|
||||
/// associated traits.
|
||||
///
|
||||
/// Errors mostly originate from the underlying OS, but custom instances of
|
||||
/// `Error` can be created with crafted error messages and a particular value of
|
||||
/// [`ErrorKind`].
|
||||
///
|
||||
/// [`Read`]: ../io/trait.Read.html
|
||||
/// [`Write`]: ../io/trait.Write.html
|
||||
/// [`Seek`]: ../io/trait.Seek.html
|
||||
/// [`ErrorKind`]: enum.ErrorKind.html
|
||||
pub struct Error {
|
||||
repr: Repr,
|
||||
}
|
||||
|
||||
impl fmt::Debug for Error {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
fmt::Debug::fmt(&self.repr, f)
|
||||
}
|
||||
}
|
||||
|
||||
enum Repr {
|
||||
Os(i32),
|
||||
Simple(ErrorKind),
|
||||
#[cfg(feature="alloc")]
|
||||
Custom(Box<Custom>),
|
||||
#[cfg(not(feature="alloc"))]
|
||||
Custom(Custom),
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
struct Custom {
|
||||
kind: ErrorKind,
|
||||
error: String,
|
||||
}
|
||||
|
||||
/// A list specifying general categories of I/O error.
|
||||
///
|
||||
/// This list is intended to grow over time and it is not recommended to
|
||||
/// exhaustively match against it.
|
||||
///
|
||||
/// It is used with the [`io::Error`] type.
|
||||
///
|
||||
/// [`io::Error`]: struct.Error.html
|
||||
#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
|
||||
#[allow(deprecated)]
|
||||
#[non_exhaustive]
|
||||
pub enum ErrorKind {
|
||||
/// An entity was not found, often a file.
|
||||
NotFound,
|
||||
/// The operation lacked the necessary privileges to complete.
|
||||
PermissionDenied,
|
||||
/// The connection was refused by the remote server.
|
||||
ConnectionRefused,
|
||||
/// The connection was reset by the remote server.
|
||||
ConnectionReset,
|
||||
/// The connection was aborted (terminated) by the remote server.
|
||||
ConnectionAborted,
|
||||
/// The network operation failed because it was not connected yet.
|
||||
NotConnected,
|
||||
/// A socket address could not be bound because the address is already in
|
||||
/// use elsewhere.
|
||||
AddrInUse,
|
||||
/// A nonexistent interface was requested or the requested address was not
|
||||
/// local.
|
||||
AddrNotAvailable,
|
||||
/// The operation failed because a pipe was closed.
|
||||
BrokenPipe,
|
||||
/// An entity already exists, often a file.
|
||||
AlreadyExists,
|
||||
/// The operation needs to block to complete, but the blocking operation was
|
||||
/// requested to not occur.
|
||||
WouldBlock,
|
||||
/// A parameter was incorrect.
|
||||
InvalidInput,
|
||||
/// Data not valid for the operation were encountered.
|
||||
///
|
||||
/// Unlike [`InvalidInput`], this typically means that the operation
|
||||
/// parameters were valid, however the error was caused by malformed
|
||||
/// input data.
|
||||
///
|
||||
/// For example, a function that reads a file into a string will error with
|
||||
/// `InvalidData` if the file's contents are not valid UTF-8.
|
||||
///
|
||||
/// [`InvalidInput`]: #variant.InvalidInput
|
||||
InvalidData,
|
||||
/// The I/O operation's timeout expired, causing it to be canceled.
|
||||
TimedOut,
|
||||
/// An error returned when an operation could not be completed because a
|
||||
/// call to [`write`] returned [`Ok(0)`].
|
||||
///
|
||||
/// This typically means that an operation could only succeed if it wrote a
|
||||
/// particular number of bytes but only a smaller number of bytes could be
|
||||
/// written.
|
||||
///
|
||||
/// [`write`]: ../../std/io/trait.Write.html#tymethod.write
|
||||
/// [`Ok(0)`]: ../../std/io/type.Result.html
|
||||
WriteZero,
|
||||
/// This operation was interrupted.
|
||||
///
|
||||
/// Interrupted operations can typically be retried.
|
||||
Interrupted,
|
||||
/// Any I/O error not part of this list.
|
||||
Other,
|
||||
|
||||
/// An error returned when an operation could not be completed because an
|
||||
/// "end of file" was reached prematurely.
|
||||
///
|
||||
/// This typically means that an operation could only succeed if it read a
|
||||
/// particular number of bytes but only a smaller number of bytes could be
|
||||
/// read.
|
||||
UnexpectedEof,
|
||||
}
|
||||
|
||||
impl ErrorKind {
|
||||
pub(crate) fn as_str(&self) -> &'static str {
|
||||
match *self {
|
||||
ErrorKind::NotFound => "entity not found",
|
||||
ErrorKind::PermissionDenied => "permission denied",
|
||||
ErrorKind::ConnectionRefused => "connection refused",
|
||||
ErrorKind::ConnectionReset => "connection reset",
|
||||
ErrorKind::ConnectionAborted => "connection aborted",
|
||||
ErrorKind::NotConnected => "not connected",
|
||||
ErrorKind::AddrInUse => "address in use",
|
||||
ErrorKind::AddrNotAvailable => "address not available",
|
||||
ErrorKind::BrokenPipe => "broken pipe",
|
||||
ErrorKind::AlreadyExists => "entity already exists",
|
||||
ErrorKind::WouldBlock => "operation would block",
|
||||
ErrorKind::InvalidInput => "invalid input parameter",
|
||||
ErrorKind::InvalidData => "invalid data",
|
||||
ErrorKind::TimedOut => "timed out",
|
||||
ErrorKind::WriteZero => "write zero",
|
||||
ErrorKind::Interrupted => "operation interrupted",
|
||||
ErrorKind::Other => "other os error",
|
||||
ErrorKind::UnexpectedEof => "unexpected end of file",
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Intended for use for errors not exposed to the user, where allocating onto
|
||||
/// the heap (for normal construction via Error::new) is too costly.
|
||||
impl From<ErrorKind> for Error {
|
||||
/// Converts an [`ErrorKind`] into an [`Error`].
|
||||
///
|
||||
/// This conversion allocates a new error with a simple representation of error kind.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use std::io::{Error, ErrorKind};
|
||||
///
|
||||
/// let not_found = ErrorKind::NotFound;
|
||||
/// let error = Error::from(not_found);
|
||||
/// assert_eq!("entity not found", format!("{}", error));
|
||||
/// ```
|
||||
///
|
||||
/// [`ErrorKind`]: ../../std/io/enum.ErrorKind.html
|
||||
/// [`Error`]: ../../std/io/struct.Error.html
|
||||
#[inline]
|
||||
fn from(kind: ErrorKind) -> Error {
|
||||
Error { repr: Repr::Simple(kind) }
|
||||
}
|
||||
}
|
||||
|
||||
impl Error {
|
||||
/// Creates a new I/O error from a known kind of error as well as an
|
||||
/// arbitrary error payload.
|
||||
///
|
||||
/// This function is used to generically create I/O errors which do not
|
||||
/// originate from the OS itself. The `error` argument is an arbitrary
|
||||
/// payload which will be contained in this `Error`.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use std::io::{Error, ErrorKind};
|
||||
///
|
||||
/// // errors can be created from strings
|
||||
/// let custom_error = Error::new(ErrorKind::Other, "oh no!");
|
||||
///
|
||||
/// // errors can also be created from other errors
|
||||
/// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error);
|
||||
/// ```
|
||||
pub fn new<E>(kind: ErrorKind, error: E) -> Error
|
||||
where
|
||||
E: Into<String>,
|
||||
{
|
||||
Self::_new(kind, error.into())
|
||||
}
|
||||
|
||||
fn _new(kind: ErrorKind, error: String) -> Error {
|
||||
Error { repr: Repr::Custom(Box::new(Custom { kind, error })) }
|
||||
}
|
||||
|
||||
/// Creates a new instance of an `Error` from a particular OS error code.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// On Linux:
|
||||
///
|
||||
/// ```
|
||||
/// # if cfg!(target_os = "linux") {
|
||||
/// use std::io;
|
||||
///
|
||||
/// let error = io::Error::from_raw_os_error(22);
|
||||
/// assert_eq!(error.kind(), io::ErrorKind::InvalidInput);
|
||||
/// # }
|
||||
/// ```
|
||||
///
|
||||
/// On Windows:
|
||||
///
|
||||
/// ```
|
||||
/// # if cfg!(windows) {
|
||||
/// use std::io;
|
||||
///
|
||||
/// let error = io::Error::from_raw_os_error(10022);
|
||||
/// assert_eq!(error.kind(), io::ErrorKind::InvalidInput);
|
||||
/// # }
|
||||
/// ```
|
||||
pub fn from_raw_os_error(code: i32) -> Error {
|
||||
Error { repr: Repr::Os(code) }
|
||||
}
|
||||
|
||||
/// Returns the OS error that this error represents (if any).
|
||||
///
|
||||
/// If this `Error` was constructed via `last_os_error` or
|
||||
/// `from_raw_os_error`, then this function will return `Some`, otherwise
|
||||
/// it will return `None`.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use std::io::{Error, ErrorKind};
|
||||
///
|
||||
/// fn print_os_error(err: &Error) {
|
||||
/// if let Some(raw_os_err) = err.raw_os_error() {
|
||||
/// println!("raw OS error: {:?}", raw_os_err);
|
||||
/// } else {
|
||||
/// println!("Not an OS error");
|
||||
/// }
|
||||
/// }
|
||||
///
|
||||
/// fn main() {
|
||||
/// // Will print "raw OS error: ...".
|
||||
/// print_os_error(&Error::last_os_error());
|
||||
/// // Will print "Not an OS error".
|
||||
/// print_os_error(&Error::new(ErrorKind::Other, "oh no!"));
|
||||
/// }
|
||||
/// ```
|
||||
pub fn raw_os_error(&self) -> Option<i32> {
|
||||
match self.repr {
|
||||
Repr::Os(i) => Some(i),
|
||||
Repr::Custom(..) => None,
|
||||
Repr::Simple(..) => None,
|
||||
}
|
||||
}
|
||||
|
||||
/// Returns a reference to the inner error wrapped by this error (if any).
|
||||
///
|
||||
/// If this `Error` was constructed via `new` then this function will
|
||||
/// return `Some`, otherwise it will return `None`.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use std::io::{Error, ErrorKind};
|
||||
///
|
||||
/// fn print_error(err: &Error) {
|
||||
/// if let Some(inner_err) = err.get_ref() {
|
||||
/// println!("Inner error: {:?}", inner_err);
|
||||
/// } else {
|
||||
/// println!("No inner error");
|
||||
/// }
|
||||
/// }
|
||||
///
|
||||
/// fn main() {
|
||||
/// // Will print "No inner error".
|
||||
/// print_error(&Error::last_os_error());
|
||||
/// // Will print "Inner error: ...".
|
||||
/// print_error(&Error::new(ErrorKind::Other, "oh no!"));
|
||||
/// }
|
||||
/// ```
|
||||
pub fn get_ref(&self) -> Option<&String> {
|
||||
match self.repr {
|
||||
Repr::Os(..) => None,
|
||||
Repr::Simple(..) => None,
|
||||
Repr::Custom(ref c) => Some(&c.error),
|
||||
}
|
||||
}
|
||||
|
||||
/// Returns a mutable reference to the inner error wrapped by this error
|
||||
/// (if any).
|
||||
///
|
||||
/// If this `Error` was constructed via `new` then this function will
|
||||
/// return `Some`, otherwise it will return `None`.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use std::io::{Error, ErrorKind};
|
||||
/// use std::{error, fmt};
|
||||
/// use std::fmt::Display;
|
||||
///
|
||||
/// #[derive(Debug)]
|
||||
/// struct MyError {
|
||||
/// v: String,
|
||||
/// }
|
||||
///
|
||||
/// impl MyError {
|
||||
/// fn new() -> MyError {
|
||||
/// MyError {
|
||||
/// v: "oh no!".to_string()
|
||||
/// }
|
||||
/// }
|
||||
///
|
||||
/// fn change_message(&mut self, new_message: &str) {
|
||||
/// self.v = new_message.to_string();
|
||||
/// }
|
||||
/// }
|
||||
///
|
||||
/// impl error::Error for MyError {}
|
||||
///
|
||||
/// impl Display for MyError {
|
||||
/// fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
/// write!(f, "MyError: {}", &self.v)
|
||||
/// }
|
||||
/// }
|
||||
///
|
||||
/// fn change_error(mut err: Error) -> Error {
|
||||
/// if let Some(inner_err) = err.get_mut() {
|
||||
/// inner_err.downcast_mut::<MyError>().unwrap().change_message("I've been changed!");
|
||||
/// }
|
||||
/// err
|
||||
/// }
|
||||
///
|
||||
/// fn print_error(err: &Error) {
|
||||
/// if let Some(inner_err) = err.get_ref() {
|
||||
/// println!("Inner error: {}", inner_err);
|
||||
/// } else {
|
||||
/// println!("No inner error");
|
||||
/// }
|
||||
/// }
|
||||
///
|
||||
/// fn main() {
|
||||
/// // Will print "No inner error".
|
||||
/// print_error(&change_error(Error::last_os_error()));
|
||||
/// // Will print "Inner error: ...".
|
||||
/// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new())));
|
||||
/// }
|
||||
/// ```
|
||||
pub fn get_mut(&mut self) -> Option<&mut String> {
|
||||
match self.repr {
|
||||
Repr::Os(..) => None,
|
||||
Repr::Simple(..) => None,
|
||||
Repr::Custom(ref mut c) => Some(&mut c.error),
|
||||
}
|
||||
}
|
||||
|
||||
/// Consumes the `Error`, returning its inner error (if any).
|
||||
///
|
||||
/// If this `Error` was constructed via `new` then this function will
|
||||
/// return `Some`, otherwise it will return `None`.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use std::io::{Error, ErrorKind};
|
||||
///
|
||||
/// fn print_error(err: Error) {
|
||||
/// if let Some(inner_err) = err.into_inner() {
|
||||
/// println!("Inner error: {}", inner_err);
|
||||
/// } else {
|
||||
/// println!("No inner error");
|
||||
/// }
|
||||
/// }
|
||||
///
|
||||
/// fn main() {
|
||||
/// // Will print "No inner error".
|
||||
/// print_error(Error::last_os_error());
|
||||
/// // Will print "Inner error: ...".
|
||||
/// print_error(Error::new(ErrorKind::Other, "oh no!"));
|
||||
/// }
|
||||
/// ```
|
||||
pub fn into_inner(self) -> Option<String> {
|
||||
match self.repr {
|
||||
Repr::Os(..) => None,
|
||||
Repr::Simple(..) => None,
|
||||
Repr::Custom(c) => Some(c.error),
|
||||
}
|
||||
}
|
||||
|
||||
/// Returns the corresponding `ErrorKind` for this error.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use std::io::{Error, ErrorKind};
|
||||
///
|
||||
/// fn print_error(err: Error) {
|
||||
/// println!("{:?}", err.kind());
|
||||
/// }
|
||||
///
|
||||
/// fn main() {
|
||||
/// // Will print "No inner error".
|
||||
/// print_error(Error::last_os_error());
|
||||
/// // Will print "Inner error: ...".
|
||||
/// print_error(Error::new(ErrorKind::AddrInUse, "oh no!"));
|
||||
/// }
|
||||
/// ```
|
||||
pub fn kind(&self) -> ErrorKind {
|
||||
match self.repr {
|
||||
Repr::Os(_code) => ErrorKind::Other,
|
||||
Repr::Custom(ref c) => c.kind,
|
||||
Repr::Simple(kind) => kind,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl fmt::Debug for Repr {
|
||||
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
match *self {
|
||||
Repr::Os(code) => fmt
|
||||
.debug_struct("Os")
|
||||
.field("code", &code)
|
||||
.finish(),
|
||||
Repr::Custom(ref c) => fmt::Debug::fmt(&c, fmt),
|
||||
Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl fmt::Display for Error {
|
||||
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
match self.repr {
|
||||
Repr::Os(code) => {
|
||||
write!(fmt, "os error {}", code)
|
||||
}
|
||||
Repr::Custom(ref c) => c.error.fmt(fmt),
|
||||
Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn _assert_error_is_sync_send() {
|
||||
fn _is_sync_send<T: Sync + Send>() {}
|
||||
_is_sync_send::<Error>();
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod test {
|
||||
use super::{Custom, Error, ErrorKind, Repr};
|
||||
use crate::error;
|
||||
use crate::fmt;
|
||||
use crate::sys::decode_error_kind;
|
||||
use crate::sys::os::error_string;
|
||||
|
||||
#[test]
|
||||
fn test_debug_error() {
|
||||
let code = 6;
|
||||
let msg = error_string(code);
|
||||
let kind = decode_error_kind(code);
|
||||
let err = Error {
|
||||
repr: Repr::Custom(box Custom {
|
||||
kind: ErrorKind::InvalidInput,
|
||||
error: box Error { repr: super::Repr::Os(code) },
|
||||
}),
|
||||
};
|
||||
let expected = format!(
|
||||
"Custom {{ \
|
||||
kind: InvalidInput, \
|
||||
error: Os {{ \
|
||||
code: {:?}, \
|
||||
kind: {:?}, \
|
||||
message: {:?} \
|
||||
}} \
|
||||
}}",
|
||||
code, kind, msg
|
||||
);
|
||||
assert_eq!(format!("{:?}", err), expected);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_downcasting() {
|
||||
#[derive(Debug)]
|
||||
struct TestError;
|
||||
|
||||
impl fmt::Display for TestError {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
f.write_str("asdf")
|
||||
}
|
||||
}
|
||||
|
||||
impl error::Error for TestError {}
|
||||
|
||||
// we have to call all of these UFCS style right now since method
|
||||
// resolution won't implicitly drop the Send+Sync bounds
|
||||
let mut err = Error::new(ErrorKind::Other, TestError);
|
||||
assert!(err.get_ref().unwrap().is::<TestError>());
|
||||
assert_eq!("asdf", err.get_ref().unwrap().to_string());
|
||||
assert!(err.get_mut().unwrap().is::<TestError>());
|
||||
let extracted = err.into_inner().unwrap();
|
||||
extracted.downcast::<TestError>().unwrap();
|
||||
}
|
||||
}
|
||||
@ -1,378 +0,0 @@
|
||||
use core::cmp;
|
||||
use core::fmt;
|
||||
use crate::io::{
|
||||
self, Error, ErrorKind, Initializer, Read, Seek, SeekFrom, Write,
|
||||
};
|
||||
#[cfg(feature = "collections")] use crate::io::BufRead;
|
||||
use core::mem;
|
||||
|
||||
#[cfg(feature="collections")]
|
||||
use collections::{
|
||||
vec::Vec,
|
||||
string::String,
|
||||
};
|
||||
#[cfg(feature = "alloc")]
|
||||
use alloc::boxed::Box;
|
||||
|
||||
// =============================================================================
|
||||
// Forwarding implementations
|
||||
|
||||
impl<R: Read + ?Sized> Read for &mut R {
|
||||
#[inline]
|
||||
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
|
||||
(**self).read(buf)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
unsafe fn initializer(&self) -> Initializer {
|
||||
(**self).initializer()
|
||||
}
|
||||
|
||||
#[cfg(feature="collections")]
|
||||
#[inline]
|
||||
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> {
|
||||
(**self).read_to_end(buf)
|
||||
}
|
||||
|
||||
#[cfg(feature="collections")]
|
||||
#[inline]
|
||||
fn read_to_string(&mut self, buf: &mut String) -> io::Result<usize> {
|
||||
(**self).read_to_string(buf)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn read_exact(&mut self, buf: &mut [u8]) -> io::Result<()> {
|
||||
(**self).read_exact(buf)
|
||||
}
|
||||
}
|
||||
impl<W: Write + ?Sized> Write for &mut W {
|
||||
#[inline]
|
||||
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
|
||||
(**self).write(buf)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn flush(&mut self) -> io::Result<()> {
|
||||
(**self).flush()
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn write_all(&mut self, buf: &[u8]) -> io::Result<()> {
|
||||
(**self).write_all(buf)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn write_fmt(&mut self, fmt: fmt::Arguments<'_>) -> io::Result<()> {
|
||||
(**self).write_fmt(fmt)
|
||||
}
|
||||
}
|
||||
impl<S: Seek + ?Sized> Seek for &mut S {
|
||||
#[inline]
|
||||
fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
|
||||
(**self).seek(pos)
|
||||
}
|
||||
}
|
||||
#[cfg(feature = "collections")]
|
||||
impl<B: BufRead + ?Sized> BufRead for &mut B {
|
||||
#[inline]
|
||||
fn fill_buf(&mut self) -> io::Result<&[u8]> {
|
||||
(**self).fill_buf()
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn consume(&mut self, amt: usize) {
|
||||
(**self).consume(amt)
|
||||
}
|
||||
|
||||
#[cfg(feature="collections")]
|
||||
#[inline]
|
||||
fn read_until(&mut self, byte: u8, buf: &mut Vec<u8>) -> io::Result<usize> {
|
||||
(**self).read_until(byte, buf)
|
||||
}
|
||||
|
||||
#[cfg(feature="collections")]
|
||||
#[inline]
|
||||
fn read_line(&mut self, buf: &mut String) -> io::Result<usize> {
|
||||
(**self).read_line(buf)
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(feature="alloc")]
|
||||
#[cfg(feature="collections")]
|
||||
impl<R: Read + ?Sized> Read for Box<R> {
|
||||
#[inline]
|
||||
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
|
||||
(**self).read(buf)
|
||||
}
|
||||
|
||||
#[cfg(feature="collections")]
|
||||
#[inline]
|
||||
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> {
|
||||
(**self).read_to_end(buf)
|
||||
}
|
||||
|
||||
#[cfg(feature="collections")]
|
||||
#[inline]
|
||||
fn read_to_string(&mut self, buf: &mut String) -> io::Result<usize> {
|
||||
(**self).read_to_string(buf)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn read_exact(&mut self, buf: &mut [u8]) -> io::Result<()> {
|
||||
(**self).read_exact(buf)
|
||||
}
|
||||
}
|
||||
#[cfg(feature="alloc")]
|
||||
#[cfg(feature="collections")]
|
||||
impl<W: Write + ?Sized> Write for Box<W> {
|
||||
#[inline]
|
||||
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
|
||||
(**self).write(buf)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn flush(&mut self) -> io::Result<()> {
|
||||
(**self).flush()
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn write_all(&mut self, buf: &[u8]) -> io::Result<()> {
|
||||
(**self).write_all(buf)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn write_fmt(&mut self, fmt: fmt::Arguments<'_>) -> io::Result<()> {
|
||||
(**self).write_fmt(fmt)
|
||||
}
|
||||
}
|
||||
#[cfg(feature="collections")]
|
||||
impl<S: Seek + ?Sized> Seek for Box<S> {
|
||||
#[inline]
|
||||
fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
|
||||
(**self).seek(pos)
|
||||
}
|
||||
}
|
||||
#[cfg(feature="collections")]
|
||||
impl<B: BufRead + ?Sized> BufRead for Box<B> {
|
||||
#[inline]
|
||||
fn fill_buf(&mut self) -> io::Result<&[u8]> {
|
||||
(**self).fill_buf()
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn consume(&mut self, amt: usize) {
|
||||
(**self).consume(amt)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn read_until(&mut self, byte: u8, buf: &mut Vec<u8>) -> io::Result<usize> {
|
||||
(**self).read_until(byte, buf)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn read_line(&mut self, buf: &mut String) -> io::Result<usize> {
|
||||
(**self).read_line(buf)
|
||||
}
|
||||
}
|
||||
|
||||
// Used by panicking::default_hook
|
||||
#[cfg(test)]
|
||||
/// This impl is only used by printing logic, so any error returned is always
|
||||
/// of kind `Other`, and should be ignored.
|
||||
#[cfg(feature="collections")]
|
||||
impl Write for Box<dyn (::realstd::io::Write) + Send> {
|
||||
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
|
||||
(**self).write(buf).map_err(|_| ErrorKind::Other.into())
|
||||
}
|
||||
|
||||
fn flush(&mut self) -> io::Result<()> {
|
||||
(**self).flush().map_err(|_| ErrorKind::Other.into())
|
||||
}
|
||||
}
|
||||
|
||||
// =============================================================================
|
||||
// In-memory buffer implementations
|
||||
|
||||
/// Read is implemented for `&[u8]` by copying from the slice.
|
||||
///
|
||||
/// Note that reading updates the slice to point to the yet unread part.
|
||||
/// The slice will be empty when EOF is reached.
|
||||
impl Read for &[u8] {
|
||||
#[inline]
|
||||
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
|
||||
let amt = cmp::min(buf.len(), self.len());
|
||||
let (a, b) = self.split_at(amt);
|
||||
|
||||
// First check if the amount of bytes we want to read is small:
|
||||
// `copy_from_slice` will generally expand to a call to `memcpy`, and
|
||||
// for a single byte the overhead is significant.
|
||||
if amt == 1 {
|
||||
buf[0] = a[0];
|
||||
} else {
|
||||
buf[..amt].copy_from_slice(a);
|
||||
}
|
||||
|
||||
*self = b;
|
||||
Ok(amt)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
unsafe fn initializer(&self) -> Initializer {
|
||||
Initializer::nop()
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn read_exact(&mut self, buf: &mut [u8]) -> io::Result<()> {
|
||||
if buf.len() > self.len() {
|
||||
return Err(Error::new(ErrorKind::UnexpectedEof, "failed to fill whole buffer"));
|
||||
}
|
||||
let (a, b) = self.split_at(buf.len());
|
||||
|
||||
// First check if the amount of bytes we want to read is small:
|
||||
// `copy_from_slice` will generally expand to a call to `memcpy`, and
|
||||
// for a single byte the overhead is significant.
|
||||
if buf.len() == 1 {
|
||||
buf[0] = a[0];
|
||||
} else {
|
||||
buf.copy_from_slice(a);
|
||||
}
|
||||
|
||||
*self = b;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
#[cfg(feature="collections")]
|
||||
#[inline]
|
||||
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> {
|
||||
buf.extend_from_slice(*self);
|
||||
let len = self.len();
|
||||
*self = &self[len..];
|
||||
Ok(len)
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(feature="collections")]
|
||||
impl BufRead for &[u8] {
|
||||
#[inline]
|
||||
fn fill_buf(&mut self) -> io::Result<&[u8]> {
|
||||
Ok(*self)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn consume(&mut self, amt: usize) {
|
||||
*self = &self[amt..];
|
||||
}
|
||||
}
|
||||
|
||||
/// Write is implemented for `&mut [u8]` by copying into the slice, overwriting
|
||||
/// its data.
|
||||
///
|
||||
/// Note that writing updates the slice to point to the yet unwritten part.
|
||||
/// The slice will be empty when it has been completely overwritten.
|
||||
impl Write for &mut [u8] {
|
||||
#[inline]
|
||||
fn write(&mut self, data: &[u8]) -> io::Result<usize> {
|
||||
let amt = cmp::min(data.len(), self.len());
|
||||
let (a, b) = mem::replace(self, &mut []).split_at_mut(amt);
|
||||
a.copy_from_slice(&data[..amt]);
|
||||
*self = b;
|
||||
Ok(amt)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn write_all(&mut self, data: &[u8]) -> io::Result<()> {
|
||||
if self.write(data)? == data.len() {
|
||||
Ok(())
|
||||
} else {
|
||||
Err(Error::new(ErrorKind::WriteZero, "failed to write whole buffer"))
|
||||
}
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn flush(&mut self) -> io::Result<()> {
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
/// Write is implemented for `Vec<u8>` by appending to the vector.
|
||||
/// The vector will grow as needed.
|
||||
#[cfg(feature="collections")]
|
||||
impl Write for Vec<u8> {
|
||||
#[inline]
|
||||
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
|
||||
self.extend_from_slice(buf);
|
||||
Ok(buf.len())
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn write_all(&mut self, buf: &[u8]) -> io::Result<()> {
|
||||
self.extend_from_slice(buf);
|
||||
Ok(())
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn flush(&mut self) -> io::Result<()> {
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use crate::io::prelude::*;
|
||||
|
||||
#[bench]
|
||||
fn bench_read_slice(b: &mut test::Bencher) {
|
||||
let buf = [5; 1024];
|
||||
let mut dst = [0; 128];
|
||||
|
||||
b.iter(|| {
|
||||
let mut rd = &buf[..];
|
||||
for _ in 0..8 {
|
||||
let _ = rd.read(&mut dst);
|
||||
test::black_box(&dst);
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
#[bench]
|
||||
fn bench_write_slice(b: &mut test::Bencher) {
|
||||
let mut buf = [0; 1024];
|
||||
let src = [5; 128];
|
||||
|
||||
b.iter(|| {
|
||||
let mut wr = &mut buf[..];
|
||||
for _ in 0..8 {
|
||||
let _ = wr.write_all(&src);
|
||||
test::black_box(&wr);
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
#[bench]
|
||||
fn bench_read_vec(b: &mut test::Bencher) {
|
||||
let buf = vec![5; 1024];
|
||||
let mut dst = [0; 128];
|
||||
|
||||
b.iter(|| {
|
||||
let mut rd = &buf[..];
|
||||
for _ in 0..8 {
|
||||
let _ = rd.read(&mut dst);
|
||||
test::black_box(&dst);
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
#[bench]
|
||||
fn bench_write_vec(b: &mut test::Bencher) {
|
||||
let mut buf = Vec::with_capacity(1024);
|
||||
let src = [5; 128];
|
||||
|
||||
b.iter(|| {
|
||||
let mut wr = &mut buf[..];
|
||||
for _ in 0..8 {
|
||||
let _ = wr.write_all(&src);
|
||||
test::black_box(&wr);
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
@ -1,13 +0,0 @@
|
||||
//! The I/O Prelude
|
||||
//!
|
||||
//! The purpose of this module is to alleviate imports of many common I/O traits
|
||||
//! by adding a glob import to the top of I/O heavy modules:
|
||||
//!
|
||||
//! ```
|
||||
//! # #![allow(unused_imports)]
|
||||
//! use std::io::prelude::*;
|
||||
//! ```
|
||||
|
||||
|
||||
pub use super::{Read, Seek, Write};
|
||||
#[cfg(feature = "collections")] pub use super::BufRead;
|
||||
@ -1,269 +0,0 @@
|
||||
#![allow(missing_copy_implementations)]
|
||||
|
||||
use core::fmt;
|
||||
use core::mem;
|
||||
use crate::io::{self, ErrorKind, Initializer, Read, Write};
|
||||
#[cfg(feature = "collections")] use crate::io::BufRead;
|
||||
|
||||
/// Copies the entire contents of a reader into a writer.
|
||||
///
|
||||
/// This function will continuously read data from `reader` and then
|
||||
/// write it into `writer` in a streaming fashion until `reader`
|
||||
/// returns EOF.
|
||||
///
|
||||
/// On success, the total number of bytes that were copied from
|
||||
/// `reader` to `writer` is returned.
|
||||
///
|
||||
/// If you’re wanting to copy the contents of one file to another and you’re
|
||||
/// working with filesystem paths, see the [`fs::copy`] function.
|
||||
///
|
||||
/// [`fs::copy`]: ../fs/fn.copy.html
|
||||
///
|
||||
/// # Errors
|
||||
///
|
||||
/// This function will return an error immediately if any call to `read` or
|
||||
/// `write` returns an error. All instances of `ErrorKind::Interrupted` are
|
||||
/// handled by this function and the underlying operation is retried.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use std::io;
|
||||
///
|
||||
/// fn main() -> io::Result<()> {
|
||||
/// let mut reader: &[u8] = b"hello";
|
||||
/// let mut writer: Vec<u8> = vec![];
|
||||
///
|
||||
/// io::copy(&mut reader, &mut writer)?;
|
||||
///
|
||||
/// assert_eq!(&b"hello"[..], &writer[..]);
|
||||
/// Ok(())
|
||||
/// }
|
||||
/// ```
|
||||
pub fn copy<R: ?Sized, W: ?Sized>(reader: &mut R, writer: &mut W) -> io::Result<u64>
|
||||
where
|
||||
R: Read,
|
||||
W: Write,
|
||||
{
|
||||
let mut buf = unsafe {
|
||||
#[allow(deprecated)]
|
||||
let mut buf: [u8; super::DEFAULT_BUF_SIZE] = mem::uninitialized();
|
||||
reader.initializer().initialize(&mut buf);
|
||||
buf
|
||||
};
|
||||
|
||||
let mut written = 0;
|
||||
loop {
|
||||
let len = match reader.read(&mut buf) {
|
||||
Ok(0) => return Ok(written),
|
||||
Ok(len) => len,
|
||||
Err(ref e) if e.kind() == ErrorKind::Interrupted => continue,
|
||||
Err(e) => return Err(e),
|
||||
};
|
||||
writer.write_all(&buf[..len])?;
|
||||
written += len as u64;
|
||||
}
|
||||
}
|
||||
|
||||
/// A reader which is always at EOF.
|
||||
///
|
||||
/// This struct is generally created by calling [`empty`]. Please see
|
||||
/// the documentation of [`empty()`][`empty`] for more details.
|
||||
///
|
||||
/// [`empty`]: fn.empty.html
|
||||
pub struct Empty {
|
||||
_priv: (),
|
||||
}
|
||||
|
||||
/// Constructs a new handle to an empty reader.
|
||||
///
|
||||
/// All reads from the returned reader will return [`Ok`]`(0)`.
|
||||
///
|
||||
/// [`Ok`]: ../result/enum.Result.html#variant.Ok
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// A slightly sad example of not reading anything into a buffer:
|
||||
///
|
||||
/// ```
|
||||
/// use std::io::{self, Read};
|
||||
///
|
||||
/// let mut buffer = String::new();
|
||||
/// io::empty().read_to_string(&mut buffer).unwrap();
|
||||
/// assert!(buffer.is_empty());
|
||||
/// ```
|
||||
pub fn empty() -> Empty {
|
||||
Empty { _priv: () }
|
||||
}
|
||||
|
||||
impl Read for Empty {
|
||||
#[inline]
|
||||
fn read(&mut self, _buf: &mut [u8]) -> io::Result<usize> {
|
||||
Ok(0)
|
||||
}
|
||||
|
||||
#[inline]
|
||||
unsafe fn initializer(&self) -> Initializer {
|
||||
Initializer::nop()
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(feature="collections")]
|
||||
impl BufRead for Empty {
|
||||
#[inline]
|
||||
fn fill_buf(&mut self) -> io::Result<&[u8]> {
|
||||
Ok(&[])
|
||||
}
|
||||
#[inline]
|
||||
fn consume(&mut self, _n: usize) {}
|
||||
}
|
||||
|
||||
impl fmt::Debug for Empty {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
f.pad("Empty { .. }")
|
||||
}
|
||||
}
|
||||
|
||||
/// A reader which yields one byte over and over and over and over and over and...
|
||||
///
|
||||
/// This struct is generally created by calling [`repeat`][repeat]. Please
|
||||
/// see the documentation of `repeat()` for more details.
|
||||
///
|
||||
/// [repeat]: fn.repeat.html
|
||||
pub struct Repeat {
|
||||
byte: u8,
|
||||
}
|
||||
|
||||
/// Creates an instance of a reader that infinitely repeats one byte.
|
||||
///
|
||||
/// All reads from this reader will succeed by filling the specified buffer with
|
||||
/// the given byte.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use std::io::{self, Read};
|
||||
///
|
||||
/// let mut buffer = [0; 3];
|
||||
/// io::repeat(0b101).read_exact(&mut buffer).unwrap();
|
||||
/// assert_eq!(buffer, [0b101, 0b101, 0b101]);
|
||||
/// ```
|
||||
pub fn repeat(byte: u8) -> Repeat {
|
||||
Repeat { byte }
|
||||
}
|
||||
|
||||
impl Read for Repeat {
|
||||
#[inline]
|
||||
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
|
||||
for slot in &mut *buf {
|
||||
*slot = self.byte;
|
||||
}
|
||||
Ok(buf.len())
|
||||
}
|
||||
|
||||
#[inline]
|
||||
unsafe fn initializer(&self) -> Initializer {
|
||||
Initializer::nop()
|
||||
}
|
||||
}
|
||||
|
||||
impl fmt::Debug for Repeat {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
f.pad("Repeat { .. }")
|
||||
}
|
||||
}
|
||||
|
||||
/// A writer which will move data into the void.
|
||||
///
|
||||
/// This struct is generally created by calling [`sink`][sink]. Please
|
||||
/// see the documentation of `sink()` for more details.
|
||||
///
|
||||
/// [sink]: fn.sink.html
|
||||
pub struct Sink {
|
||||
_priv: (),
|
||||
}
|
||||
|
||||
/// Creates an instance of a writer which will successfully consume all data.
|
||||
///
|
||||
/// All calls to `write` on the returned instance will return `Ok(buf.len())`
|
||||
/// and the contents of the buffer will not be inspected.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```rust
|
||||
/// use std::io::{self, Write};
|
||||
///
|
||||
/// let buffer = vec![1, 2, 3, 5, 8];
|
||||
/// let num_bytes = io::sink().write(&buffer).unwrap();
|
||||
/// assert_eq!(num_bytes, 5);
|
||||
/// ```
|
||||
pub fn sink() -> Sink {
|
||||
Sink { _priv: () }
|
||||
}
|
||||
|
||||
impl Write for Sink {
|
||||
#[inline]
|
||||
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
|
||||
Ok(buf.len())
|
||||
}
|
||||
|
||||
#[inline]
|
||||
fn flush(&mut self) -> io::Result<()> {
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
impl fmt::Debug for Sink {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
f.pad("Sink { .. }")
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use crate::io::prelude::*;
|
||||
use crate::io::{copy, empty, repeat, sink};
|
||||
|
||||
#[test]
|
||||
fn copy_copies() {
|
||||
let mut r = repeat(0).take(4);
|
||||
let mut w = sink();
|
||||
assert_eq!(copy(&mut r, &mut w).unwrap(), 4);
|
||||
|
||||
let mut r = repeat(0).take(1 << 17);
|
||||
assert_eq!(copy(&mut r as &mut dyn Read, &mut w as &mut dyn Write).unwrap(), 1 << 17);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn sink_sinks() {
|
||||
let mut s = sink();
|
||||
assert_eq!(s.write(&[]).unwrap(), 0);
|
||||
assert_eq!(s.write(&[0]).unwrap(), 1);
|
||||
assert_eq!(s.write(&[0; 1024]).unwrap(), 1024);
|
||||
assert_eq!(s.by_ref().write(&[0; 1024]).unwrap(), 1024);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn empty_reads() {
|
||||
let mut e = empty();
|
||||
assert_eq!(e.read(&mut []).unwrap(), 0);
|
||||
assert_eq!(e.read(&mut [0]).unwrap(), 0);
|
||||
assert_eq!(e.read(&mut [0; 1024]).unwrap(), 0);
|
||||
assert_eq!(e.by_ref().read(&mut [0; 1024]).unwrap(), 0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn repeat_repeats() {
|
||||
let mut r = repeat(4);
|
||||
let mut b = [0; 1024];
|
||||
assert_eq!(r.read(&mut b).unwrap(), 1024);
|
||||
assert!(b.iter().all(|b| *b == 4));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn take_some_bytes() {
|
||||
assert_eq!(repeat(4).take(100).bytes().count(), 100);
|
||||
assert_eq!(repeat(4).take(100).bytes().next().unwrap().unwrap(), 4);
|
||||
assert_eq!(repeat(1).take(10).chain(repeat(2).take(10)).bytes().count(), 20);
|
||||
}
|
||||
}
|
||||
@ -1,51 +0,0 @@
|
||||
//! <p id="core_io-show-docblock"></p>
|
||||
//! This is just a listing of the functionality available in this crate. See
|
||||
//! the [std documentation](https://doc.rust-lang.org/nightly/std/io/index.html)
|
||||
//! for a full description of the functionality.
|
||||
#![allow(stable_features,unused_features)]
|
||||
#![feature(question_mark,const_fn,copy_from_slice,try_from,str_internals,align_offset,slice_internals)]
|
||||
#![cfg_attr(any(feature="alloc",feature="collections"),feature(alloc))]
|
||||
#![cfg_attr(pattern_guards,feature(bind_by_move_pattern_guards,nll))]
|
||||
#![cfg_attr(non_exhaustive,feature(non_exhaustive))]
|
||||
#![cfg_attr(unicode,feature(str_char))]
|
||||
#![cfg_attr(unicode,feature(unicode))]
|
||||
#![no_std]
|
||||
|
||||
#[cfg_attr(feature="collections",macro_use)]
|
||||
#[cfg_attr(feature="collections",allow(unused_imports))]
|
||||
#[cfg(feature="collections")] extern crate alloc as collections;
|
||||
#[cfg(feature="alloc")] extern crate alloc;
|
||||
#[cfg(rustc_unicode)]
|
||||
extern crate rustc_unicode;
|
||||
#[cfg(std_unicode)]
|
||||
extern crate std_unicode;
|
||||
|
||||
#[cfg(not(feature="collections"))]
|
||||
pub type ErrorString = &'static str;
|
||||
|
||||
// Provide Box::new wrapper
|
||||
#[cfg(not(feature="alloc"))]
|
||||
struct FakeBox<T>(core::marker::PhantomData<T>);
|
||||
#[cfg(not(feature="alloc"))]
|
||||
impl<T> FakeBox<T> {
|
||||
fn new(val: T) -> T {
|
||||
val
|
||||
}
|
||||
}
|
||||
|
||||
// Needed for older compilers, to ignore vec!/format! macros in tests
|
||||
#[cfg(not(feature="collections"))]
|
||||
#[allow(unused)]
|
||||
macro_rules! vec (
|
||||
( $ elem : expr ; $ n : expr ) => { () };
|
||||
( $ ( $ x : expr ) , * ) => { () };
|
||||
( $ ( $ x : expr , ) * ) => { () };
|
||||
);
|
||||
#[cfg(not(feature="collections"))]
|
||||
#[allow(unused)]
|
||||
macro_rules! format {
|
||||
( $ ( $ arg : tt ) * ) => { () };
|
||||
}
|
||||
|
||||
mod io;
|
||||
pub use io::*;
|
||||
@ -30,9 +30,9 @@ libsupport_zynq = { default-features = false, features = ["alloc_core"], git = "
|
||||
libcortex_a9 = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
|
||||
libasync = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
|
||||
libregister = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
|
||||
libconfig = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git", features = ["ipv6"] }
|
||||
|
||||
dyld = { path = "../libdyld" }
|
||||
dwarf = { path = "../libdwarf" }
|
||||
unwind = { path = "../libunwind" }
|
||||
libc = { path = "../libc" }
|
||||
libconfig = { path = "../libconfig", features = ["ipv6"]}
|
||||
|
||||
@ -1,22 +0,0 @@
|
||||
[package]
|
||||
name = "szl"
|
||||
description = "Simple Zynq Loader"
|
||||
version = "0.1.0"
|
||||
authors = ["M-Labs"]
|
||||
edition = "2018"
|
||||
|
||||
[features]
|
||||
target_zc706 = ["libboard_zynq/target_zc706", "libsupport_zynq/target_zc706"]
|
||||
default = ["target_zc706"]
|
||||
|
||||
[dependencies]
|
||||
log = "0.4"
|
||||
byteorder = { version = "1.3", default-features = false }
|
||||
core_io = { version = "0.1", features = ["collections"] }
|
||||
|
||||
libconfig = { path = "../libconfig" }
|
||||
libboard_zynq = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
|
||||
libsupport_zynq = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
|
||||
libcortex_a9 = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
|
||||
libregister = { git = "https://git.m-labs.hk/M-Labs/zynq-rs.git" }
|
||||
|
||||
@ -1,22 +0,0 @@
|
||||
use std::env;
|
||||
use std::fs::File;
|
||||
use std::io::Write;
|
||||
use std::path::PathBuf;
|
||||
|
||||
fn main() {
|
||||
println!("cargo:rerun-if-changed=build.rs");
|
||||
let out = env::var("OUT_DIR").unwrap();
|
||||
let out_dir = &PathBuf::from(&out);
|
||||
|
||||
// Put the linker script somewhere the linker can find it
|
||||
File::create(out_dir.join("link.x"))
|
||||
.unwrap()
|
||||
.write_all(include_bytes!("link.x"))
|
||||
.unwrap();
|
||||
println!("cargo:rustc-link-search={}", out_dir.display());
|
||||
|
||||
// Only re-run the build script when link.x is changed,
|
||||
// instead of when any part of the source code changes.
|
||||
println!("cargo:rerun-if-changed=link.x");
|
||||
}
|
||||
|
||||
@ -1,69 +0,0 @@
|
||||
ENTRY(Reset);
|
||||
|
||||
MEMORY
|
||||
{
|
||||
/* 256 kB On-Chip Memory */
|
||||
OCM : ORIGIN = 0, LENGTH = 0x30000
|
||||
SDRAM : ORIGIN = 0x00100000, LENGTH = 0x1FF00000
|
||||
OCM3 : ORIGIN = 0xFFFF0000, LENGTH = 0x10000
|
||||
}
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
.text :
|
||||
{
|
||||
KEEP(*(.text.exceptions));
|
||||
*(.text.boot);
|
||||
*(.text .text.*);
|
||||
} > OCM
|
||||
|
||||
.rodata : ALIGN(4)
|
||||
{
|
||||
*(.rodata .rodata.*);
|
||||
} > OCM
|
||||
|
||||
.data : ALIGN(4)
|
||||
{
|
||||
*(.data .data.*);
|
||||
} > OCM
|
||||
|
||||
.heap (NOLOAD) : ALIGN(8)
|
||||
{
|
||||
__runtime_start = .;
|
||||
. += 0x8000000;
|
||||
__runtime_end = .;
|
||||
__heap0_start = .;
|
||||
. += 0x8000000;
|
||||
__heap0_end = .;
|
||||
} > SDRAM
|
||||
|
||||
.bss (NOLOAD) : ALIGN(4)
|
||||
{
|
||||
__bss_start = .;
|
||||
*(.bss .bss.*);
|
||||
. = ALIGN(4);
|
||||
__bss_end = .;
|
||||
} > OCM3
|
||||
|
||||
.stack1 (NOLOAD) : ALIGN(8)
|
||||
{
|
||||
__stack1_end = .;
|
||||
. += 0x100;
|
||||
__stack1_start = .;
|
||||
} > OCM3
|
||||
|
||||
.stack0 (NOLOAD) : ALIGN(8)
|
||||
{
|
||||
__stack0_end = .;
|
||||
. += 0x4000;
|
||||
__stack0_start = .;
|
||||
} > OCM3
|
||||
|
||||
/DISCARD/ :
|
||||
{
|
||||
/* Unused exception related info that only wastes space */
|
||||
*(.ARM.exidx);
|
||||
*(.ARM.exidx.*);
|
||||
*(.ARM.extab.*);
|
||||
}
|
||||
}
|
||||
@ -1,169 +0,0 @@
|
||||
#![no_std]
|
||||
#![no_main]
|
||||
|
||||
extern crate alloc;
|
||||
extern crate log;
|
||||
|
||||
mod netboot;
|
||||
|
||||
use alloc::rc::Rc;
|
||||
use core::mem;
|
||||
use core_io::{Read, Seek};
|
||||
use libboard_zynq::{
|
||||
self as zynq,
|
||||
clocks::source::{ArmPll, ClockSource, IoPll},
|
||||
clocks::Clocks,
|
||||
logger, println, sdio, slcr,
|
||||
timer::GlobalTimer,
|
||||
};
|
||||
use libconfig::{bootgen, sd_reader, Config};
|
||||
use libcortex_a9::{
|
||||
asm::{dsb, isb},
|
||||
cache::{bpiall, dcciall, iciallu},
|
||||
enable_fpu,
|
||||
l2c::enable_l2_cache,
|
||||
};
|
||||
use libregister::RegisterR;
|
||||
use libsupport_zynq::ram;
|
||||
use log::info;
|
||||
|
||||
extern "C" {
|
||||
static mut __runtime_start: usize;
|
||||
static mut __runtime_end: usize;
|
||||
}
|
||||
|
||||
fn boot_sd<File: Read + Seek>(
|
||||
file: &mut Option<File>,
|
||||
runtime_start: *mut u8,
|
||||
runtime_max: usize,
|
||||
) -> Result<(), ()> {
|
||||
if file.is_none() {
|
||||
log::error!("No bootgen file");
|
||||
return Err(());
|
||||
}
|
||||
let mut file = file.as_mut().unwrap();
|
||||
info!("Loading gateware");
|
||||
bootgen::load_bitstream(&mut file).map_err(|e| log::error!("Cannot load gateware: {:?}", e))?;
|
||||
|
||||
info!("Loading runtime");
|
||||
let runtime =
|
||||
bootgen::get_runtime(&mut file).map_err(|e| log::error!("Cannot load runtime: {:?}", e))?;
|
||||
|
||||
if runtime.len() > runtime_max {
|
||||
log::error!(
|
||||
"Runtime binary too large, max {} but got {}",
|
||||
runtime_max,
|
||||
runtime.len()
|
||||
);
|
||||
}
|
||||
unsafe {
|
||||
let target = core::slice::from_raw_parts_mut(runtime_start, runtime.len());
|
||||
target.copy_from_slice(&runtime);
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
#[no_mangle]
|
||||
pub fn main_core0() {
|
||||
GlobalTimer::start();
|
||||
enable_fpu();
|
||||
logger::init().unwrap();
|
||||
log::set_max_level(log::LevelFilter::Debug);
|
||||
println!(
|
||||
r#"
|
||||
|
||||
__________ __
|
||||
/ ___/__ / / /
|
||||
\__ \ / / / /
|
||||
___/ / / /__/ /___
|
||||
/____/ /____/_____/
|
||||
|
||||
(C) 2020 M-Labs
|
||||
"#
|
||||
);
|
||||
info!("Simple Zynq Loader starting...");
|
||||
enable_l2_cache();
|
||||
|
||||
const CPU_FREQ: u32 = 800_000_000;
|
||||
|
||||
ArmPll::setup(2 * CPU_FREQ);
|
||||
Clocks::set_cpu_freq(CPU_FREQ);
|
||||
IoPll::setup(1_000_000_000);
|
||||
libboard_zynq::stdio::drop_uart(); // reinitialize UART after clocking change
|
||||
let mut ddr = zynq::ddr::DdrRam::ddrram();
|
||||
ram::init_alloc_core0();
|
||||
|
||||
let sdio0 = sdio::Sdio::sdio0(true);
|
||||
let fs = if sdio0.is_card_inserted() {
|
||||
info!("Card inserted. Mounting file system.");
|
||||
let sd = sdio::sd_card::SdCard::from_sdio(sdio0).unwrap();
|
||||
let reader = sd_reader::SdReader::new(sd);
|
||||
reader
|
||||
.mount_fatfs(sd_reader::PartitionEntry::Entry1)
|
||||
.map(|v| Rc::new(v))
|
||||
.ok()
|
||||
} else {
|
||||
info!("No SD card inserted.");
|
||||
None
|
||||
};
|
||||
let fs_ref = fs.as_ref();
|
||||
let root_dir = fs_ref.map(|fs| fs.root_dir());
|
||||
let mut bootgen_file = root_dir.and_then(|root_dir| root_dir.open_file("/BOOT.BIN").ok());
|
||||
let config = Config::from_fs(fs.clone());
|
||||
|
||||
unsafe {
|
||||
let max_len =
|
||||
&__runtime_end as *const usize as usize - &__runtime_start as *const usize as usize;
|
||||
match slcr::RegisterBlock::unlocked(|slcr| slcr.boot_mode.read().boot_mode_pins()) {
|
||||
slcr::BootModePins::Jtag => netboot::netboot(
|
||||
&mut bootgen_file,
|
||||
config,
|
||||
&mut __runtime_start as *mut usize as *mut u8,
|
||||
max_len,
|
||||
),
|
||||
slcr::BootModePins::SdCard => {
|
||||
if boot_sd(
|
||||
&mut bootgen_file,
|
||||
&mut __runtime_start as *mut usize as *mut u8,
|
||||
max_len,
|
||||
)
|
||||
.is_err()
|
||||
{
|
||||
log::error!("Error booting from SD card");
|
||||
log::info!("Fall back on netboot");
|
||||
netboot::netboot(
|
||||
&mut bootgen_file,
|
||||
config,
|
||||
&mut __runtime_start as *mut usize as *mut u8,
|
||||
max_len,
|
||||
)
|
||||
}
|
||||
}
|
||||
v => {
|
||||
panic!("Boot mode {:?} not supported", v);
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
info!("Preparing for runtime execution");
|
||||
// Flush data cache entries for all of L1 cache, including
|
||||
// Memory/Instruction Synchronization Barriers
|
||||
dcciall();
|
||||
iciallu();
|
||||
bpiall();
|
||||
dsb();
|
||||
isb();
|
||||
|
||||
// Start core0 only, for compatibility with FSBL.
|
||||
info!("executing payload");
|
||||
unsafe {
|
||||
(mem::transmute::<*mut u8, fn()>(ddr.ptr::<u8>()))();
|
||||
}
|
||||
|
||||
loop {}
|
||||
}
|
||||
|
||||
#[no_mangle]
|
||||
pub fn main_core1() {
|
||||
panic!("core1 started but should not have");
|
||||
}
|
||||
@ -1,399 +0,0 @@
|
||||
use alloc::vec;
|
||||
use alloc::vec::Vec;
|
||||
use byteorder::{ByteOrder, NetworkEndian};
|
||||
use core_io::{Read, Seek};
|
||||
use libboard_zynq::{
|
||||
devc,
|
||||
eth::Eth,
|
||||
smoltcp::{
|
||||
self,
|
||||
iface::{EthernetInterfaceBuilder, NeighborCache},
|
||||
time::Instant,
|
||||
wire::IpCidr,
|
||||
},
|
||||
timer::GlobalTimer,
|
||||
};
|
||||
use libconfig::{bootgen, net_settings, Config};
|
||||
|
||||
enum NetConnState {
|
||||
WaitCommand,
|
||||
FirmwareLength(usize, u8),
|
||||
FirmwareDownload(usize, usize),
|
||||
FirmwareWaitO,
|
||||
FirmwareWaitK,
|
||||
GatewareLength(usize, u8),
|
||||
GatewareDownload(usize, usize),
|
||||
GatewareWaitO,
|
||||
GatewareWaitK,
|
||||
}
|
||||
|
||||
struct NetConn {
|
||||
state: NetConnState,
|
||||
firmware_downloaded: bool,
|
||||
gateware_downloaded: bool,
|
||||
}
|
||||
|
||||
impl NetConn {
|
||||
pub fn new() -> NetConn {
|
||||
NetConn {
|
||||
state: NetConnState::WaitCommand,
|
||||
firmware_downloaded: false,
|
||||
gateware_downloaded: false,
|
||||
}
|
||||
}
|
||||
|
||||
pub fn reset(&mut self) {
|
||||
self.state = NetConnState::WaitCommand;
|
||||
self.firmware_downloaded = false;
|
||||
self.gateware_downloaded = false;
|
||||
}
|
||||
|
||||
fn input_partial<File: Read + Seek>(
|
||||
&mut self,
|
||||
bootgen_file: &mut Option<File>,
|
||||
runtime_start: *mut u8,
|
||||
runtime_max_len: usize,
|
||||
buf: &[u8],
|
||||
storage: &mut Vec<u8>,
|
||||
mut boot_callback: impl FnMut(),
|
||||
) -> Result<usize, ()> {
|
||||
match self.state {
|
||||
NetConnState::WaitCommand => match buf[0] {
|
||||
b'F' => {
|
||||
log::info!("Received firmware load command");
|
||||
self.state = NetConnState::FirmwareLength(0, 0);
|
||||
Ok(1)
|
||||
}
|
||||
b'G' => {
|
||||
log::info!("Received gateware load command");
|
||||
self.state = NetConnState::GatewareLength(0, 0);
|
||||
storage.clear();
|
||||
Ok(1)
|
||||
}
|
||||
b'B' => {
|
||||
if !self.gateware_downloaded {
|
||||
log::info!("Gateware not loaded via netboot");
|
||||
if bootgen_file.is_none() {
|
||||
log::error!("No bootgen file to load gateware");
|
||||
return Err(());
|
||||
}
|
||||
log::info!("Attempting to load from SD card");
|
||||
if let Err(e) = bootgen::load_bitstream(bootgen_file.as_mut().unwrap()) {
|
||||
log::error!("Gateware load failed: {:?}", e);
|
||||
return Err(());
|
||||
}
|
||||
}
|
||||
if self.firmware_downloaded {
|
||||
log::info!("Received boot command");
|
||||
boot_callback();
|
||||
self.state = NetConnState::WaitCommand;
|
||||
Ok(1)
|
||||
} else {
|
||||
log::error!("Received boot command, but no firmware downloaded");
|
||||
Err(())
|
||||
}
|
||||
}
|
||||
_ => {
|
||||
log::error!("Received unknown netboot command: 0x{:02x}", buf[0]);
|
||||
Err(())
|
||||
}
|
||||
},
|
||||
NetConnState::FirmwareLength(firmware_length, recv_bytes) => {
|
||||
let firmware_length = (firmware_length << 8) | (buf[0] as usize);
|
||||
let recv_bytes = recv_bytes + 1;
|
||||
if recv_bytes == 4 {
|
||||
if firmware_length > runtime_max_len {
|
||||
log::error!(
|
||||
"Runtime too large, maximum {} but requested {}",
|
||||
runtime_max_len,
|
||||
firmware_length
|
||||
);
|
||||
return Err(());
|
||||
}
|
||||
self.state = NetConnState::FirmwareDownload(firmware_length, 0);
|
||||
storage.clear();
|
||||
storage.reserve(firmware_length);
|
||||
} else {
|
||||
self.state = NetConnState::FirmwareLength(firmware_length, recv_bytes);
|
||||
}
|
||||
Ok(1)
|
||||
}
|
||||
NetConnState::FirmwareDownload(firmware_length, recv_bytes) => {
|
||||
let max_length = firmware_length - recv_bytes;
|
||||
let buf = if buf.len() > max_length {
|
||||
&buf[..max_length]
|
||||
} else {
|
||||
&buf[..]
|
||||
};
|
||||
let length = buf.len();
|
||||
|
||||
storage.extend_from_slice(buf);
|
||||
|
||||
let recv_bytes = recv_bytes + length;
|
||||
if recv_bytes == firmware_length {
|
||||
self.state = NetConnState::FirmwareWaitO;
|
||||
Ok(length)
|
||||
} else {
|
||||
self.state = NetConnState::FirmwareDownload(firmware_length, recv_bytes);
|
||||
Ok(length)
|
||||
}
|
||||
}
|
||||
NetConnState::FirmwareWaitO => {
|
||||
if buf[0] == b'O' {
|
||||
self.state = NetConnState::FirmwareWaitK;
|
||||
Ok(1)
|
||||
} else {
|
||||
log::error!("End-of-firmware confirmation failed");
|
||||
Err(())
|
||||
}
|
||||
}
|
||||
NetConnState::FirmwareWaitK => {
|
||||
if buf[0] == b'K' {
|
||||
log::info!("Firmware successfully downloaded");
|
||||
self.state = NetConnState::WaitCommand;
|
||||
self.firmware_downloaded = true;
|
||||
{
|
||||
let dest = unsafe {
|
||||
core::slice::from_raw_parts_mut(runtime_start, storage.len())
|
||||
};
|
||||
dest.copy_from_slice(storage);
|
||||
}
|
||||
Ok(1)
|
||||
} else {
|
||||
log::error!("End-of-firmware confirmation failed");
|
||||
Err(())
|
||||
}
|
||||
}
|
||||
|
||||
NetConnState::GatewareLength(gateware_length, recv_bytes) => {
|
||||
let gateware_length = (gateware_length << 8) | (buf[0] as usize);
|
||||
let recv_bytes = recv_bytes + 1;
|
||||
if recv_bytes == 4 {
|
||||
self.state = NetConnState::GatewareDownload(gateware_length, 0);
|
||||
storage.clear();
|
||||
storage.reserve_exact(gateware_length);
|
||||
} else {
|
||||
self.state = NetConnState::GatewareLength(gateware_length, recv_bytes);
|
||||
}
|
||||
Ok(1)
|
||||
}
|
||||
NetConnState::GatewareDownload(gateware_length, recv_bytes) => {
|
||||
let max_length = gateware_length - recv_bytes;
|
||||
let buf = if buf.len() > max_length {
|
||||
&buf[..max_length]
|
||||
} else {
|
||||
&buf[..]
|
||||
};
|
||||
let length = buf.len();
|
||||
|
||||
storage.extend_from_slice(buf);
|
||||
|
||||
let recv_bytes = recv_bytes + length;
|
||||
if recv_bytes == gateware_length {
|
||||
self.state = NetConnState::GatewareWaitO;
|
||||
Ok(length)
|
||||
} else {
|
||||
self.state = NetConnState::GatewareDownload(gateware_length, recv_bytes);
|
||||
Ok(length)
|
||||
}
|
||||
}
|
||||
NetConnState::GatewareWaitO => {
|
||||
if buf[0] == b'O' {
|
||||
self.state = NetConnState::GatewareWaitK;
|
||||
Ok(1)
|
||||
} else {
|
||||
log::error!("End-of-gateware confirmation failed");
|
||||
Err(())
|
||||
}
|
||||
}
|
||||
NetConnState::GatewareWaitK => {
|
||||
if buf[0] == b'K' {
|
||||
log::info!("Preprocessing bitstream...");
|
||||
// find sync word 0xFFFFFFFF AA995566
|
||||
let sync_word: [u8; 8] = [0xFF, 0xFF, 0xFF, 0xFF, 0xAA, 0x99, 0x55, 0x66];
|
||||
let mut i = 0;
|
||||
let mut state = 0;
|
||||
while i < storage.len() {
|
||||
if storage[i] == sync_word[state] {
|
||||
state += 1;
|
||||
if state == sync_word.len() {
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
// backtrack
|
||||
// not very efficient but we only have 8 elements
|
||||
'outer: while state > 0 {
|
||||
state -= 1;
|
||||
for j in 0..state {
|
||||
if storage[i - j] != sync_word[state - j] {
|
||||
continue 'outer;
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
i += 1;
|
||||
}
|
||||
if state != sync_word.len() {
|
||||
log::error!("Sync word not found in bitstream (corrupted?)");
|
||||
return Err(());
|
||||
}
|
||||
// we need the sync word
|
||||
// i was pointing to the last element in the sync sequence
|
||||
i -= sync_word.len() - 1;
|
||||
// // append no-op
|
||||
// storage.extend_from_slice(&[0x20, 0, 0, 0]);
|
||||
let bitstream = &mut storage[i..];
|
||||
{
|
||||
// swap endian
|
||||
let swap = unsafe {
|
||||
core::slice::from_raw_parts_mut(
|
||||
bitstream.as_mut_ptr() as usize as *mut u32,
|
||||
bitstream.len() / 4,
|
||||
)
|
||||
};
|
||||
NetworkEndian::from_slice_u32(swap);
|
||||
}
|
||||
unsafe {
|
||||
// align to 64 bytes
|
||||
let ptr = alloc::alloc::alloc(
|
||||
alloc::alloc::Layout::from_size_align(bitstream.len(), 64).unwrap(),
|
||||
);
|
||||
let buffer = core::slice::from_raw_parts_mut(ptr, bitstream.len());
|
||||
buffer.copy_from_slice(bitstream);
|
||||
|
||||
let mut devcfg = devc::DevC::new();
|
||||
devcfg.enable();
|
||||
let result = devcfg.program(&buffer);
|
||||
core::ptr::drop_in_place(ptr);
|
||||
if let Err(e) = result {
|
||||
log::error!("Error during FPGA startup: {}", e);
|
||||
return Err(());
|
||||
}
|
||||
}
|
||||
|
||||
log::info!("Gateware successfully downloaded");
|
||||
self.state = NetConnState::WaitCommand;
|
||||
self.gateware_downloaded = true;
|
||||
Ok(1)
|
||||
} else {
|
||||
log::info!("End-of-gateware confirmation failed");
|
||||
Err(())
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn input<File: Read + Seek>(
|
||||
&mut self,
|
||||
bootgen_file: &mut Option<File>,
|
||||
runtime_start: *mut u8,
|
||||
runtime_max_len: usize,
|
||||
buf: &[u8],
|
||||
storage: &mut Vec<u8>,
|
||||
mut boot_callback: impl FnMut(),
|
||||
) -> Result<(), ()> {
|
||||
let mut remaining = &buf[..];
|
||||
while !remaining.is_empty() {
|
||||
let read_cnt = self.input_partial(
|
||||
bootgen_file,
|
||||
runtime_start,
|
||||
runtime_max_len,
|
||||
remaining,
|
||||
storage,
|
||||
&mut boot_callback,
|
||||
)?;
|
||||
remaining = &remaining[read_cnt..];
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
pub fn netboot<File: Read + Seek>(
|
||||
bootgen_file: &mut Option<File>,
|
||||
cfg: Config,
|
||||
runtime_start: *mut u8,
|
||||
runtime_max_len: usize,
|
||||
) {
|
||||
log::info!("Preparing network for netboot");
|
||||
let net_addresses = net_settings::get_adresses(&cfg);
|
||||
log::info!("Network addresses: {}", net_addresses);
|
||||
let eth = Eth::eth0(net_addresses.hardware_addr.0.clone());
|
||||
let eth = eth.start_rx(8);
|
||||
let mut eth = eth.start_tx(8);
|
||||
|
||||
let mut neighbor_map = [None; 2];
|
||||
let neighbor_cache = NeighborCache::new(&mut neighbor_map[..]);
|
||||
let mut ip_addrs = [IpCidr::new(net_addresses.ipv4_addr, 0)];
|
||||
let mut interface = EthernetInterfaceBuilder::new(&mut eth)
|
||||
.ethernet_addr(net_addresses.hardware_addr)
|
||||
.ip_addrs(&mut ip_addrs[..])
|
||||
.neighbor_cache(neighbor_cache)
|
||||
.finalize();
|
||||
|
||||
let mut rx_storage = vec![0; 4096];
|
||||
let mut tx_storage = vec![0; 128];
|
||||
|
||||
let mut socket_set_entries: [_; 1] = Default::default();
|
||||
let mut sockets = smoltcp::socket::SocketSet::new(&mut socket_set_entries[..]);
|
||||
|
||||
let tcp_rx_buffer = smoltcp::socket::TcpSocketBuffer::new(&mut rx_storage[..]);
|
||||
let tcp_tx_buffer = smoltcp::socket::TcpSocketBuffer::new(&mut tx_storage[..]);
|
||||
let tcp_socket = smoltcp::socket::TcpSocket::new(tcp_rx_buffer, tcp_tx_buffer);
|
||||
let tcp_handle = sockets.add(tcp_socket);
|
||||
|
||||
let mut net_conn = NetConn::new();
|
||||
let mut storage = Vec::new();
|
||||
let mut boot_flag = false;
|
||||
let timer = unsafe { GlobalTimer::get() };
|
||||
|
||||
log::info!("Waiting for connections...");
|
||||
loop {
|
||||
let timestamp = Instant::from_millis(timer.get_time().0 as i64);
|
||||
{
|
||||
let socket = &mut *sockets.get::<smoltcp::socket::TcpSocket>(tcp_handle);
|
||||
|
||||
if boot_flag {
|
||||
return;
|
||||
}
|
||||
if !socket.is_open() {
|
||||
socket.listen(4269).unwrap() // 0x10ad
|
||||
}
|
||||
|
||||
if socket.may_recv() {
|
||||
if socket
|
||||
.recv(|data| {
|
||||
(
|
||||
data.len(),
|
||||
net_conn
|
||||
.input(
|
||||
bootgen_file,
|
||||
runtime_start,
|
||||
runtime_max_len,
|
||||
data,
|
||||
&mut storage,
|
||||
|| {
|
||||
boot_flag = true;
|
||||
},
|
||||
)
|
||||
.is_err(),
|
||||
)
|
||||
})
|
||||
.unwrap()
|
||||
{
|
||||
net_conn.reset();
|
||||
socket.close();
|
||||
}
|
||||
} else if socket.may_send() {
|
||||
net_conn.reset();
|
||||
socket.close();
|
||||
}
|
||||
}
|
||||
|
||||
match interface.poll(&mut sockets, timestamp) {
|
||||
Ok(_) => (),
|
||||
Err(smoltcp::Error::Unrecognized) => (),
|
||||
Err(err) => log::error!("Network error: {}", err),
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -3,6 +3,6 @@ let
|
||||
in
|
||||
pkgs.fetchgit {
|
||||
url = "https://git.m-labs.hk/M-Labs/zynq-rs.git";
|
||||
rev = "450ccef18e609aa6c88540d6791e0b41d2de01d2";
|
||||
sha256 = "0xlvxczfwyk5zij4gnbxjvcq3hmhjslmfswp6vzl67ddkpc8bb6s";
|
||||
rev = "7360984efbd772ae992ef00af09786b0ae8430f0";
|
||||
sha256 = "10xrkhvrs6p0pn50cccvbnzi7l9lp8a6xmqy0pv5vg0f1qq3zxif";
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user