From: Michael Haggerty Date: Sat, 06 Sep 2014 07:50:28 GMT Subject: [PATCH v4 14/32] lock_file(): exit early if lockfile cannot be opened Message-ID: <1409989846-22401-15-git-send-email-mhagger@alum.mit.edu> In-Reply-To: <1409989846-22401-1-git-send-email-mhagger@alum.mit.edu> This is a bit easier to read than the old version, which nested part of the non-error code in an "if" block. Signed-off-by: Michael Haggerty --- lockfile.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/lockfile.c b/lockfile.c index bfea333..71786c9 100644 --- a/lockfile.c +++ b/lockfile.c @@ -207,19 +207,18 @@ static int lock_file(struct lock_file *lk, const char *path, int flags) resolve_symlink(lk->filename, max_path_len); strcat(lk->filename, LOCK_SUFFIX); lk->fd = open(lk->filename, O_RDWR | O_CREAT | O_EXCL, 0666); - if (0 <= lk->fd) { - lk->owner = getpid(); - if (adjust_shared_perm(lk->filename)) { - int save_errno = errno; - error("cannot fix permission bits on %s", - lk->filename); - rollback_lock_file(lk); - errno = save_errno; - return -1; - } - } - else + if (lk->fd < 0) { lk->filename[0] = 0; + return -1; + } + lk->owner = getpid(); + if (adjust_shared_perm(lk->filename)) { + int save_errno = errno; + error("cannot fix permission bits on %s", lk->filename); + rollback_lock_file(lk); + errno = save_errno; + return -1; + } return lk->fd; } -- 2.1.0