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os: wrap F_DUPFD_CLOEXEC

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Some system C libraries do not have F_DUPFD_CLOEXEC. Provide a fallback.

Add tests for the new wl_os_dupfd_cloexec() wrapper.

Add per-wrapper call counters in os_wrappers-test.c. Makes it easier to
determine the minimum required number of wrapped calls.

Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
This commit is contained in:
Pekka Paalanen 2012-04-23 13:55:55 +03:00
parent 3b29783dc8
commit 1463a41f89
4 changed files with 91 additions and 4 deletions
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15
src/wayland-os.c
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@ -64,3 +64,18 @@ wl_os_socket_cloexec(int domain, int type, int protocol)
fd = socket(domain, type, protocol);
return set_cloexec_or_close(fd);
}
int
wl_os_dupfd_cloexec(int fd, long minfd)
{
int newfd;
newfd = fcntl(fd, F_DUPFD_CLOEXEC, minfd);
if (newfd >= 0)
return newfd;
if (errno != EINVAL)
return -1;
newfd = fcntl(fd, F_DUPFD, minfd);
return set_cloexec_or_close(newfd);
}