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artiq_pcap: atomically replace pcap file.
Otherwise this segfaults Wireshark (?!).
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@ -5,6 +5,7 @@
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# use # setcap cap_net_raw+eip /usr/sbin/tcpdump
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import argparse
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import os
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import subprocess
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from artiq.tools import verbosity_args, init_logger, logger, SSHClient
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@ -27,7 +28,7 @@ def get_argparser():
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help="Location to retrieve the pcap file into")
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parser.add_argument("command", metavar="COMMAND",
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type=str, default=[], nargs="+",
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type=str, default=[], nargs=argparse.REMAINDER,
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help="command to execute while capturing")
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return parser
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@ -52,5 +53,6 @@ def main():
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tcpdump.close()
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sftp.get("{tmp}/trace.pcap".format(tmp=client.tmp),
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args.file)
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args.file + ".new")
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os.rename(args.file + ".new", args.file)
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logger.info("Pcap file {file} retrieved".format(file=args.file))
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