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-rw-r--r--update-cache.c31
1 files changed, 5 insertions, 26 deletions
diff --git a/update-cache.c b/update-cache.c
index cc4298a..1fcc59a 100644
--- a/update-cache.c
+++ b/update-cache.c
@@ -94,36 +94,15 @@ static int add_file_to_cache(char *path)
return add_cache_entry(ce, option);
}
-static int match_data(int fd, void *buffer, unsigned long size)
-{
- while (size) {
- char compare[1024];
- int ret = read(fd, compare, sizeof(compare));
-
- if (ret <= 0 || ret > size || memcmp(buffer, compare, ret))
- return -1;
- size -= ret;
- buffer += ret;
- }
- return 0;
-}
-
-static int compare_data(struct cache_entry *ce, unsigned long expected_size)
+static int compare_data(struct cache_entry *ce, struct stat *st)
{
int match = -1;
int fd = open(ce->name, O_RDONLY);
if (fd >= 0) {
- void *buffer;
- unsigned long size;
- char type[20];
-
- buffer = read_sha1_file(ce->sha1, type, &size);
- if (buffer) {
- if (size == expected_size && !strcmp(type, "blob"))
- match = match_data(fd, buffer, size);
- free(buffer);
- }
+ unsigned char sha1[20];
+ if (!index_fd(sha1, fd, st, 0, NULL))
+ match = memcmp(sha1, ce->sha1, 20);
close(fd);
}
return match;
@@ -189,7 +168,7 @@ static struct cache_entry *refresh_entry(struct cache_entry *ce)
switch (st.st_mode & S_IFMT) {
case S_IFREG:
- if (compare_data(ce, st.st_size))
+ if (compare_data(ce, &st))
return ERR_PTR(-EINVAL);
break;
case S_IFLNK: