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authorJohannes Schindelin <Johannes.Schindelin@gmx.de>2007-11-03 13:12:17 (GMT)
committerJunio C Hamano <gitster@pobox.com>2007-11-04 04:44:57 (GMT)
commit2e7a9785c27f00a8f7a06edc1d4c9b2f3fa2eeb9 (patch)
tree02ca6682d75541b5d5d4273c3f8399f96f6e2e03 /builtin-reset.c
parent19391c371cec06da6cca45dbe3c212bd479cc48c (diff)
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git-reset: do not be confused if there is nothing to reset
The purpose of the function update_index_from_diff() (which is the callback function we give do_diff_cache()) is to update those index entries which differ from the given commit. Since do_diff_cache() plays games with the in-memory index, this function discarded the cache and reread it. Then, back in the function read_from_tree() we wrote the index. Of course, this broke down when there were no changes and update_index_from_diff() was not called, and therefore the mangled index was not discarded. The solution is to move the index writing into the function update_index_from_diff(). Noticed by Björn Steinbrink. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin-reset.c')
-rw-r--r--builtin-reset.c24
1 files changed, 18 insertions, 6 deletions
diff --git a/builtin-reset.c b/builtin-reset.c
index e1dc31e..5467e36 100644
--- a/builtin-reset.c
+++ b/builtin-reset.c
@@ -113,10 +113,17 @@ static int update_index_refresh(void)
return run_command_v_opt(argv_update_index, RUN_GIT_CMD);
}
+struct update_cb_data {
+ int index_fd;
+ struct lock_file *lock;
+ int exit_code;
+};
+
static void update_index_from_diff(struct diff_queue_struct *q,
struct diff_options *opt, void *data)
{
int i;
+ struct update_cb_data *cb = data;
/* do_diff_cache() mangled the index */
discard_cache();
@@ -133,29 +140,34 @@ static void update_index_from_diff(struct diff_queue_struct *q,
} else
remove_file_from_cache(one->path);
}
+
+ cb->exit_code = write_cache(cb->index_fd, active_cache, active_nr) ||
+ close(cb->index_fd) ||
+ commit_locked_index(cb->lock);
}
static int read_from_tree(const char *prefix, const char **argv,
unsigned char *tree_sha1)
{
- struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));
- int index_fd;
struct diff_options opt;
+ struct update_cb_data cb;
memset(&opt, 0, sizeof(opt));
diff_tree_setup_paths(get_pathspec(prefix, (const char **)argv), &opt);
opt.output_format = DIFF_FORMAT_CALLBACK;
opt.format_callback = update_index_from_diff;
+ opt.format_callback_data = &cb;
- index_fd = hold_locked_index(lock, 1);
+ cb.lock = xcalloc(1, sizeof(struct lock_file));
+ cb.index_fd = hold_locked_index(cb.lock, 1);
+ cb.exit_code = 0;
read_cache();
if (do_diff_cache(tree_sha1, &opt))
return 1;
diffcore_std(&opt);
diff_flush(&opt);
- return write_cache(index_fd, active_cache, active_nr) ||
- close(index_fd) ||
- commit_locked_index(lock);
+
+ return cb.exit_code;
}
static void prepend_reflog_action(const char *action, char *buf, size_t size)