[PATCH] git and symlinks as tracked content
Allow to store and track symlink in the repository. A symlink is stored
the same way as a regular file, only with the appropriate mode bits set.
The symlink target is therefore stored in a blob object.
This will hopefully make our udev repository fully functional. :)
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/update-cache.c b/update-cache.c
index bb25fa1..05d584e 100644
--- a/update-cache.c
+++ b/update-cache.c
@@ -57,19 +57,16 @@
struct cache_entry *ce;
struct stat st;
int fd;
+ unsigned int len;
+ char target[1024];
- fd = open(path, O_RDONLY);
- if (fd < 0) {
+ if (lstat(path, &st) < 0) {
if (errno == ENOENT || errno == ENOTDIR) {
if (allow_remove)
return remove_file_from_cache(path);
}
return -1;
}
- if (fstat(fd, &st) < 0) {
- close(fd);
- return -1;
- }
namelen = strlen(path);
size = cache_entry_size(namelen);
ce = xmalloc(size);
@@ -78,10 +75,24 @@
fill_stat_cache_info(ce, &st);
ce->ce_mode = create_ce_mode(st.st_mode);
ce->ce_flags = htons(namelen);
-
- if (index_fd(ce->sha1, fd, &st) < 0)
+ switch (st.st_mode & S_IFMT) {
+ case S_IFREG:
+ fd = open(path, O_RDONLY);
+ if (fd < 0)
+ return -1;
+ if (index_fd(ce->sha1, fd, &st) < 0)
+ return -1;
+ break;
+ case S_IFLNK:
+ len = readlink(path, target, sizeof(target));
+ if (len == -1 || len+1 > sizeof(target))
+ return -1;
+ if (write_sha1_file(target, len, "blob", ce->sha1))
+ return -1;
+ break;
+ default:
return -1;
-
+ }
return add_cache_entry(ce, allow_add);
}
@@ -137,7 +148,7 @@
struct cache_entry *updated;
int changed, size;
- if (stat(ce->name, &st) < 0)
+ if (lstat(ce->name, &st) < 0)
return ERR_PTR(-errno);
changed = cache_match_stat(ce, &st);
@@ -145,10 +156,10 @@
return ce;
/*
- * If the mode has changed, there's no point in trying
+ * If the mode or type has changed, there's no point in trying
* to refresh the entry - it's not going to match
*/
- if (changed & MODE_CHANGED)
+ if (changed & (MODE_CHANGED | TYPE_CHANGED))
return ERR_PTR(-EINVAL);
if (compare_data(ce, st.st_size))
