From 02ae242fdde2ba8acb6b87e32df2b1e33786e78b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Martin=20=C3=85gren?= Date: Thu, 5 Oct 2017 22:32:07 +0200 Subject: checkout-index: simplify locking logic MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit `newfd` starts out negative. If we then take the lock, `newfd` will become non-negative. We later check for exactly that property before calling `write_locked_index()`. That is, we are simply using `newfd` as a boolean to keep track of whether we took the lock or not. (We always use `newfd` and `lock_file` together, so they really are mirroring each other.) Drop `newfd` and check with `is_lock_file_locked()` instead. While at it, move the `static struct lock_file` into `cmd_checkout_index()` and make it non-static. It is only used in this function, and after 076aa2cbd (tempfile: auto-allocate tempfiles on heap, 2017-09-05), we can have lockfiles on the stack. Signed-off-by: Martin Ågren Signed-off-by: Junio C Hamano --- builtin/checkout-index.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'builtin/checkout-index.c') diff --git a/builtin/checkout-index.c b/builtin/checkout-index.c index 39c8be05dc..b0e78b819d 100644 --- a/builtin/checkout-index.c +++ b/builtin/checkout-index.c @@ -129,8 +129,6 @@ static const char * const builtin_checkout_index_usage[] = { NULL }; -static struct lock_file lock_file; - static int option_parse_stage(const struct option *opt, const char *arg, int unset) { @@ -150,7 +148,7 @@ static int option_parse_stage(const struct option *opt, int cmd_checkout_index(int argc, const char **argv, const char *prefix) { int i; - int newfd = -1; + struct lock_file lock_file = LOCK_INIT; int all = 0; int read_from_stdin = 0; int prefix_length; @@ -206,7 +204,7 @@ int cmd_checkout_index(int argc, const char **argv, const char *prefix) if (index_opt && !state.base_dir_len && !to_tempfile) { state.refresh_cache = 1; state.istate = &the_index; - newfd = hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR); + hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR); } /* Check out named files first */ @@ -251,7 +249,7 @@ int cmd_checkout_index(int argc, const char **argv, const char *prefix) if (all) checkout_all(prefix, prefix_length); - if (0 <= newfd && + if (is_lock_file_locked(&lock_file) && write_locked_index(&the_index, &lock_file, COMMIT_LOCK)) die("Unable to write new index file"); return 0; -- cgit v1.2.1