[PATCH v2 01/20] safe_create_leading_directories_const(): preserve errno
From: Michael Haggerty <hidden>
Date: 2016-06-15 23:08:27
Subsystem:
the rest · Maintainer:
Linus Torvalds
Theoretically, free() is allowed to change errno. So preserve the errno from safe_create_leading_directories() across the call to free(). Signed-off-by: Michael Haggerty <redacted> --- sha1_file.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/sha1_file.c b/sha1_file.c
index aab1872..568120e 100644
--- a/sha1_file.c
+++ b/sha1_file.c@@ -164,10 +164,14 @@ enum scld_error safe_create_leading_directories(char *path) enum scld_error safe_create_leading_directories_const(const char *path) { + int save_errno; /* path points to cache entries, so xstrdup before messing with it */ char *buf = xstrdup(path); enum scld_error result = safe_create_leading_directories(buf); + + save_errno = errno; free(buf); + errno = save_errno; return result; }
--
2.7.0