From b9223cd76c73fa5cf3ed19a2238980047bf13826 Mon Sep 17 00:00:00 2001

From: Lennart Poettering <lennart@poettering.net>

Date: Fri, 4 Nov 2022 18:20:19 +0100

Subject: [PATCH] fd-util: add new fd_cloexec_many() helper

(cherry picked from commit ed18c22c989495aab36512f03449222cfcf79aa7)

Related: #2138081

---

 src/basic/fd-util.c | 19 +++++++++++++++++++

 src/basic/fd-util.h |  1 +

 2 files changed, 20 insertions(+)

diff --git a/src/basic/fd-util.c b/src/basic/fd-util.c

index 6ed04449bf..66bb7569bb 100644

--- a/src/basic/fd-util.c

+++ b/src/basic/fd-util.c

@@ -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);

diff --git a/src/basic/fd-util.h b/src/basic/fd-util.h

index d9896e27e8..29c7d86f27 100644

--- a/src/basic/fd-util.h

+++ b/src/basic/fd-util.h

@@ -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);