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Use the standard import and testing method, as described in the import of tcp/ecn and tcp/close , tcp/sack , tcp/tcp_info. Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Soham Chakradeo <sohamch@google.com> Link: https://patch.msgid.link/20241217185203.297935-5-sohamch.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
27 lines
872 B
Plaintext
27 lines
872 B
Plaintext
// SPDX-License-Identifier: GPL-2.0
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// Simplest possible test of open() and then sendfile().
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// We write some zeroes into a file (since packetdrill expects payloads
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// to be all zeroes) and then open() the file, then use sendfile()
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// and verify that the correct number of zeroes goes out.
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`./defaults.sh
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/bin/rm -f /tmp/testfile
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/bin/dd bs=1 count=5 if=/dev/zero of=/tmp/testfile status=none
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`
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// Initialize connection
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0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
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+0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
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+0 bind(3, ..., ...) = 0
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+0 listen(3, 1) = 0
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+0 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 10>
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+0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 8>
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+0 < . 1:1(0) ack 1 win 514
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+0 accept(3, ..., ...) = 4
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+0 open("/tmp/testfile", O_RDONLY) = 5
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+0 sendfile(4, 5, [0], 5) = 5
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+0 > P. 1:6(5) ack 1
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