On Linux this flag will make sure that no file descriptor is accidentally
leaked into potential child processes. While this is not a problem right now,
it is considered to be good practice these days when dealing with file
descriptors on the Linux.
Signed-off-by: Karol Babioch <karol@xxxxxxxxxx>
---
src/utils/wpa_debug.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/src/utils/wpa_debug.c b/src/utils/wpa_debug.c
index b412f88e3..9d159632d 100644
--- a/src/utils/wpa_debug.c
+++ b/src/utils/wpa_debug.c
@@ -60,6 +60,9 @@ static int wpa_to_android_level(int level)
#ifdef CONFIG_DEBUG_FILE
#include <sys/types.h>
#include <sys/stat.h>
+#ifdef __linux__
+#include <fcntl.h>
+#endif /* __linux__ */
static int out_fd = -1;
static FILE *out_file = NULL;
@@ -567,6 +570,14 @@ int wpa_debug_open_file(const char *path)
return -1;
}
+#ifdef __linux__
+ if (fcntl(out_fd, F_SETFD, FD_CLOEXEC) == -1) {
+ wpa_printf(MSG_ERROR, "wpa_debug_open_file: Failed to set O_CLOEXEC "
+ "on output file descriptor, using standard output");
+ close(out_fd);
+ return -1;
+ }
+#endif /* __linux__ */
#ifndef _WIN32
setvbuf(out_file, NULL, _IOLBF, 0);
#endif /* _WIN32 */
--
2.19.1
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