return adjust_shared_perm(path);
}
-int safe_create_leading_directories(char *path)
+enum scld_error safe_create_leading_directories(char *path)
{
- char *pos = path + offset_1st_component(path);
- struct stat st;
+ char *next_component = path + offset_1st_component(path);
+ enum scld_error ret = SCLD_OK;
+
+ while (ret == SCLD_OK && next_component) {
+ struct stat st;
+ char *slash = next_component, slash_character;
- while (pos) {
- pos = strchr(pos, '/');
- if (!pos)
+ while (*slash && !is_dir_sep(*slash))
+ slash++;
+
+ if (!*slash)
break;
- while (*++pos == '/')
- ;
- if (!*pos)
+
+ next_component = slash + 1;
+ while (is_dir_sep(*next_component))
+ next_component++;
+ if (!*next_component)
break;
- *--pos = '\0';
+
+ slash_character = *slash;
+ *slash = '\0';
if (!stat(path, &st)) {
/* path exists */
- if (!S_ISDIR(st.st_mode)) {
- *pos = '/';
- return -3;
- }
- }
- else if (mkdir(path, 0777)) {
+ if (!S_ISDIR(st.st_mode))
+ ret = SCLD_EXISTS;
+ } else if (mkdir(path, 0777)) {
if (errno == EEXIST &&
- !stat(path, &st) && S_ISDIR(st.st_mode)) {
+ !stat(path, &st) && S_ISDIR(st.st_mode))
; /* somebody created it since we checked */
- } else {
- *pos = '/';
- return -1;
- }
- }
- else if (adjust_shared_perm(path)) {
- *pos = '/';
- return -2;
+ else if (errno == ENOENT)
+ /*
+ * Either mkdir() failed because
+ * somebody just pruned the containing
+ * directory, or stat() failed because
+ * the file that was in our way was
+ * just removed. Either way, inform
+ * the caller that it might be worth
+ * trying again:
+ */
+ ret = SCLD_VANISHED;
+ else
+ ret = SCLD_FAILED;
+ } else if (adjust_shared_perm(path)) {
+ ret = SCLD_PERMS;
}
- *pos++ = '/';
+ *slash = slash_character;
}
- return 0;
+ return ret;
}
-int safe_create_leading_directories_const(const char *path)
+enum scld_error safe_create_leading_directories_const(const char *path)
{
/* path points to cache entries, so xstrdup before messing with it */
char *buf = xstrdup(path);
- int result = safe_create_leading_directories(buf);
+ enum scld_error result = safe_create_leading_directories(buf);
free(buf);
return result;
}
return base_offset;
}
+/*
+ * Like get_delta_base above, but we return the sha1 instead of the pack
+ * offset. This means it is cheaper for REF deltas (we do not have to do
+ * the final object lookup), but more expensive for OFS deltas (we
+ * have to load the revidx to convert the offset back into a sha1).
+ */
+static const unsigned char *get_delta_base_sha1(struct packed_git *p,
+ struct pack_window **w_curs,
+ off_t curpos,
+ enum object_type type,
+ off_t delta_obj_offset)
+{
+ if (type == OBJ_REF_DELTA) {
+ unsigned char *base = use_pack(p, w_curs, curpos, NULL);
+ return base;
+ } else if (type == OBJ_OFS_DELTA) {
+ struct revindex_entry *revidx;
+ off_t base_offset = get_delta_base(p, w_curs, &curpos,
+ type, delta_obj_offset);
+
+ if (!base_offset)
+ return NULL;
+
+ revidx = find_pack_revindex(p, base_offset);
+ if (!revidx)
+ return NULL;
+
+ return nth_packed_object_sha1(p, revidx->nr);
+ } else
+ return NULL;
+}
+
int unpack_object_header(struct packed_git *p,
struct pack_window **w_curs,
off_t *curpos,
}
}
+ if (oi->delta_base_sha1) {
+ if (type == OBJ_OFS_DELTA || type == OBJ_REF_DELTA) {
+ const unsigned char *base;
+
+ base = get_delta_base_sha1(p, &w_curs, curpos,
+ type, obj_offset);
+ if (!base) {
+ type = OBJ_BAD;
+ goto out;
+ }
+
+ hashcpy(oi->delta_base_sha1, base);
+ } else
+ hashclr(oi->delta_base_sha1);
+ }
+
out:
unuse_pack(&w_curs);
return type;
git_zstream stream;
char hdr[32];
+ if (oi->delta_base_sha1)
+ hashclr(oi->delta_base_sha1);
+
/*
* If we don't care about type or size, then we don't
* need to look inside the object at all. Note that we
*(oi->sizep) = co->size;
if (oi->disk_sizep)
*(oi->disk_sizep) = 0;
+ if (oi->delta_base_sha1)
+ hashclr(oi->delta_base_sha1);
oi->whence = OI_CACHED;
return 0;
}