From: Vegard Nossum <vegard.nossum@oracle.com>
To: Dave Jones <davej@codemonkey.org.uk>
Cc: trinity@vger.kernel.org
Subject: trinity: execve() returns 0?
Date: Mon, 12 Dec 2016 13:05:05 +0100 [thread overview]
Message-ID: <4ce14b7f-a2bd-e99a-53c9-d80ae3ee27c5@oracle.com> (raw)
Hi Dave,
I'm debugging what seems to be a race between execve() and ioctl() (!),
and I noticed that the execve records in the trinity child logs indicate
that it's returning 0:
[child9:20816] [0]
execve(name="/sys/devices/virtual/bdi/7:5/power/runtime_status",
argv=0x2cd9b30, envp=0x2ca51e0) = 0
[child9:22112] [0] execve(name="/proc/134/net/pnresource",
argv=0x2c57130, envp=0x2d01bd0) = 0
[child9:22678] [0] execve(name=".//proc/45/maps", argv=0x2ce5800,
envp=0x2cfbb70) = 0
[child9:23754] [0] execve(name="/proc/1177/task/1177/net/ipx/socket",
argv=0x2cf5b10, envp=0x2b431b0) = 0
[child9:23754] [1]
execve(name="/sys/module/tcp_cubic/parameters/hystart", argv=0x2d1fe60,
envp=0x2d24f50) = 0
[child9:27614] [0] execve(name="/proc/30/net/stat/rt_cache",
argv=0x2cf5b10, envp=0x2d07cd0) = 0
I'm guessing this has something to do with the subchild code that
trinity uses (since execve() does not return on success), although I see
other execve calls that do return -1 as expected and I wouldn't expect
execve() on the above files to actually succeed, so I guess the question
is what does the = 0 mean?
Thanks,
Vegard
next reply other threads:[~2016-12-12 12:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-12 12:05 Vegard Nossum [this message]
2016-12-12 14:07 ` trinity: execve() returns 0? Dave Jones
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