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da6b1a8e47
Add facility for testing how (many) file descriptors survive an exec. This allows implementing O_CLOEXEC tests. Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
64 lines
2 KiB
C
64 lines
2 KiB
C
/*
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* Copyright © 2012 Collabora, Ltd.
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include <assert.h>
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#include <errno.h>
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#include <dirent.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "test-runner.h"
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int
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count_open_fds(void)
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{
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DIR *dir;
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struct dirent *ent;
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int count = 0;
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dir = opendir("/proc/self/fd");
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assert(dir && "opening /proc/self/fd failed.");
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errno = 0;
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while ((ent = readdir(dir))) {
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const char *s = ent->d_name;
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if (s[0] == '.' && (s[1] == 0 || (s[1] == '.' && s[2] == 0)))
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continue;
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count++;
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}
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assert(errno == 0 && "reading /proc/self/fd failed.");
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closedir(dir);
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return count;
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}
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void
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exec_fd_leak_check(int nr_expected_fds)
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{
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const char *exe = "./exec-fd-leak-checker";
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char number[16] = { 0 };
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snprintf(number, sizeof number - 1, "%d", nr_expected_fds);
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execl(exe, exe, number, (char *)NULL);
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assert(0 && "execing fd leak checker failed");
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}
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