diff options
Diffstat (limited to 'src/basic/tmpfile-util.c')
-rw-r--r-- | src/basic/tmpfile-util.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/basic/tmpfile-util.c b/src/basic/tmpfile-util.c index bc92d6a6de..260443a1d6 100644 --- a/src/basic/tmpfile-util.c +++ b/src/basic/tmpfile-util.c @@ -1,5 +1,7 @@ /* SPDX-License-Identifier: LGPL-2.1+ */ +#include <stdio.h> +#include <stdio_ext.h> #include <sys/mman.h> #include "alloc-util.h" @@ -37,6 +39,9 @@ int fopen_temporary(const char *path, FILE **_f, char **_temp_path) { return -errno; } + /* This assumes that returned FILE object is short-lived and used within the same single-threaded + * context and never shared externally, hence locking is not necessary. */ + f = fdopen(fd, "w"); if (!f) { unlink_noerrno(t); @@ -45,6 +50,8 @@ int fopen_temporary(const char *path, FILE **_f, char **_temp_path) { return -errno; } + (void) __fsetlocking(f, FSETLOCKING_BYCALLER); + *_f = f; *_temp_path = t; |