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fd-util: add new fd_cloexec_many() helper

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(cherry picked from commit ed18c22c98)
This commit is contained in:
Lennart Poettering 2022-11-04 18:20:19 +01:00 committed by Zbigniew Jędrzejewski-Szmek
parent 57b4329b38
commit 36c3c4172d
2 changed files with 20 additions and 0 deletions
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19
src/basic/fd-util.c
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@ -174,6 +174,25 @@ int fd_cloexec(int fd, bool cloexec) {
return RET_NERRNO(fcntl(fd, F_SETFD, nflags));
}
int fd_cloexec_many(const int fds[], size_t n_fds, bool cloexec) {
int ret = 0, r;
assert(n_fds == 0 || fds);
for (size_t i = 0; i < n_fds; i++) {
if (fds[i] < 0) /* Skip gracefully over already invalidated fds */
continue;
r = fd_cloexec(fds[i], cloexec);
if (r < 0 && ret >= 0) /* Continue going, but return first error */
ret = r;
else
ret = 1; /* report if we did anything */
}
return ret;
}
_pure_ static bool fd_in_set(int fd, const int fdset[], size_t n_fdset) {
assert(n_fdset == 0 || fdset);

1
src/basic/fd-util.h
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@ -56,6 +56,7 @@ DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(DIR*, closedir, NULL);
int fd_nonblock(int fd, bool nonblock);
int fd_cloexec(int fd, bool cloexec);
int fd_cloexec_many(const int fds[], size_t n_fds, bool cloexec);
int get_max_fd(void);