1 files changed, 19 insertions, 0 deletions
diff --git a/common/util.c b/common/util.c
index c43c5ddf..3a807edb 100644
--- a/common/util.c
+++ b/common/util.c
@@ -1,5 +1,6 @@
 #define _POSIX_C_SOURCE 200809L
 #include <float.h>
+#include <fcntl.h>
 #include <math.h>
 #include <stdlib.h>
 #include <string.h>
@@ -75,3 +76,21 @@ const char *sway_wl_output_subpixel_to_string(enum wl_output_subpixel subpixel)
 	sway_assert(false, "Unknown value for wl_output_subpixel.");
 	return NULL;
 }
+
+bool set_cloexec(int fd, bool cloexec) {
+	int flags = fcntl(fd, F_GETFD);
+	if (flags == -1) {
+		sway_log_errno(SWAY_ERROR, "fcntl failed");
+		return false;
+	}
+	if (cloexec) {
+		flags = flags | FD_CLOEXEC;
+	} else {
+		flags = flags & ~FD_CLOEXEC;
+	}
+	if (fcntl(fd, F_SETFD, flags) == -1) {
+		sway_log_errno(SWAY_ERROR, "fcntl failed");
+		return false;
+	}
+	return true;
+}