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-rw-r--r--read-cache.c109
1 files changed, 72 insertions, 37 deletions
diff --git a/read-cache.c b/read-cache.c
index 977921d90c..372588260e 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -62,6 +62,7 @@ static void replace_index_entry(struct index_state *istate, int nr, struct cache
replace_index_entry_in_base(istate, old, ce);
remove_name_hash(istate, old);
free(old);
+ ce->ce_flags &= ~CE_HASHED;
set_index_entry(istate, nr, ce);
ce->ce_flags |= CE_UPDATE_IN_BASE;
mark_fsmonitor_invalid(istate, ce);
@@ -184,7 +185,7 @@ static int ce_compare_link(const struct cache_entry *ce, size_t expected_size)
if (strbuf_readlink(&sb, ce->name, expected_size))
return -1;
- buffer = read_sha1_file(ce->oid.hash, &type, &size);
+ buffer = read_object_file(&ce->oid, &type, &size);
if (buffer) {
if (size == sb.len)
match = memcmp(buffer, sb.buf, size);
@@ -751,7 +752,7 @@ struct cache_entry *make_cache_entry(unsigned int mode,
int size, len;
struct cache_entry *ce, *ret;
- if (!verify_path(path)) {
+ if (!verify_path(path, mode)) {
error("Invalid path '%s'", path);
return NULL;
}
@@ -816,7 +817,7 @@ int ce_same_name(const struct cache_entry *a, const struct cache_entry *b)
* Also, we don't want double slashes or slashes at the
* end that can make pathnames ambiguous.
*/
-static int verify_dotfile(const char *rest)
+static int verify_dotfile(const char *rest, unsigned mode)
{
/*
* The first character was '.', but that
@@ -830,8 +831,13 @@ static int verify_dotfile(const char *rest)
switch (*rest) {
/*
- * ".git" followed by NUL or slash is bad. This
- * shares the path end test with the ".." case.
+ * ".git" followed by NUL or slash is bad. Note that we match
+ * case-insensitively here, even if ignore_case is not set.
+ * This outlaws ".GIT" everywhere out of an abundance of caution,
+ * since there's really no good reason to allow it.
+ *
+ * Once we've seen ".git", we can also find ".gitmodules", etc (also
+ * case-insensitively).
*/
case 'g':
case 'G':
@@ -839,8 +845,15 @@ static int verify_dotfile(const char *rest)
break;
if (rest[2] != 't' && rest[2] != 'T')
break;
- rest += 2;
- /* fallthrough */
+ if (rest[3] == '\0' || is_dir_sep(rest[3]))
+ return 0;
+ if (S_ISLNK(mode)) {
+ rest += 3;
+ if (skip_iprefix(rest, "modules", &rest) &&
+ (*rest == '\0' || is_dir_sep(*rest)))
+ return 0;
+ }
+ break;
case '.':
if (rest[1] == '\0' || is_dir_sep(rest[1]))
return 0;
@@ -848,7 +861,7 @@ static int verify_dotfile(const char *rest)
return 1;
}
-int verify_path(const char *path)
+int verify_path(const char *path, unsigned mode)
{
char c;
@@ -861,12 +874,25 @@ int verify_path(const char *path)
return 1;
if (is_dir_sep(c)) {
inside:
- if (protect_hfs && is_hfs_dotgit(path))
- return 0;
- if (protect_ntfs && is_ntfs_dotgit(path))
- return 0;
+ if (protect_hfs) {
+ if (is_hfs_dotgit(path))
+ return 0;
+ if (S_ISLNK(mode)) {
+ if (is_hfs_dotgitmodules(path))
+ return 0;
+ }
+ }
+ if (protect_ntfs) {
+ if (is_ntfs_dotgit(path))
+ return 0;
+ if (S_ISLNK(mode)) {
+ if (is_ntfs_dotgitmodules(path))
+ return 0;
+ }
+ }
+
c = *path++;
- if ((c == '.' && !verify_dotfile(path)) ||
+ if ((c == '.' && !verify_dotfile(path, mode)) ||
is_dir_sep(c) || c == '\0')
return 0;
}
@@ -1183,7 +1209,7 @@ static int add_index_entry_with_check(struct index_state *istate, struct cache_e
if (!ok_to_add)
return -1;
- if (!verify_path(ce->name))
+ if (!verify_path(ce->name, ce->ce_mode))
return error("Invalid path '%s'", ce->name);
if (!skip_df_check &&
@@ -1324,7 +1350,8 @@ static struct cache_entry *refresh_cache_ent(struct index_state *istate,
size = ce_size(ce);
updated = xmalloc(size);
- memcpy(updated, ce, size);
+ copy_cache_entry(updated, ce);
+ memcpy(updated->name, ce->name, ce->ce_namelen + 1);
fill_stat_cache_info(updated, &st);
/*
* If ignore_valid is not set, we should leave CE_VALID bit
@@ -1804,7 +1831,7 @@ int do_read_index(struct index_state *istate, const char *path, int must_exist)
if (verify_hdr(hdr, mmap_size) < 0)
goto unmap;
- hashcpy(istate->sha1, (const unsigned char *)hdr + mmap_size - the_hash_algo->rawsz);
+ hashcpy(istate->oid.hash, (const unsigned char *)hdr + mmap_size - the_hash_algo->rawsz);
istate->version = ntohl(hdr->hdr_version);
istate->cache_nr = ntohl(hdr->hdr_entries);
istate->cache_alloc = alloc_nr(istate->cache_nr);
@@ -1876,7 +1903,7 @@ int read_index_from(struct index_state *istate, const char *path,
uint64_t start = getnanotime();
struct split_index *split_index;
int ret;
- char *base_sha1_hex;
+ char *base_oid_hex;
char *base_path;
/* istate->initialized covers both .git/index and .git/sharedindex.xxx */
@@ -1887,7 +1914,7 @@ int read_index_from(struct index_state *istate, const char *path,
trace_performance_since(start, "read cache %s", path);
split_index = istate->split_index;
- if (!split_index || is_null_sha1(split_index->base_sha1)) {
+ if (!split_index || is_null_oid(&split_index->base_oid)) {
post_read_index_from(istate);
return ret;
}
@@ -1897,13 +1924,13 @@ int read_index_from(struct index_state *istate, const char *path,
else
split_index->base = xcalloc(1, sizeof(*split_index->base));
- base_sha1_hex = sha1_to_hex(split_index->base_sha1);
- base_path = xstrfmt("%s/sharedindex.%s", gitdir, base_sha1_hex);
+ base_oid_hex = oid_to_hex(&split_index->base_oid);
+ base_path = xstrfmt("%s/sharedindex.%s", gitdir, base_oid_hex);
ret = do_read_index(split_index->base, base_path, 1);
- if (hashcmp(split_index->base_sha1, split_index->base->sha1))
+ if (oidcmp(&split_index->base_oid, &split_index->base->oid))
die("broken index, expect %s in %s, got %s",
- base_sha1_hex, base_path,
- sha1_to_hex(split_index->base->sha1));
+ base_oid_hex, base_path,
+ oid_to_hex(&split_index->base->oid));
freshen_shared_index(base_path, 0);
merge_base_index(istate);
@@ -2108,13 +2135,15 @@ static int ce_write_entry(git_hash_ctx *c, int fd, struct cache_entry *ce,
struct strbuf *previous_name, struct ondisk_cache_entry *ondisk)
{
int size;
- int saved_namelen = saved_namelen; /* compiler workaround */
int result;
+ unsigned int saved_namelen;
+ int stripped_name = 0;
static unsigned char padding[8] = { 0x00 };
if (ce->ce_flags & CE_STRIP_NAME) {
saved_namelen = ce_namelen(ce);
ce->ce_namelen = 0;
+ stripped_name = 1;
}
if (ce->ce_flags & CE_EXTENDED)
@@ -2154,7 +2183,7 @@ static int ce_write_entry(git_hash_ctx *c, int fd, struct cache_entry *ce,
strbuf_splice(previous_name, common, to_remove,
ce->name + common, ce_namelen(ce) - common);
}
- if (ce->ce_flags & CE_STRIP_NAME) {
+ if (stripped_name) {
ce->ce_namelen = saved_namelen;
ce->ce_flags &= ~CE_STRIP_NAME;
}
@@ -2190,7 +2219,7 @@ static int verify_index_from(const struct index_state *istate, const char *path)
if (n != the_hash_algo->rawsz)
goto out;
- if (hashcmp(istate->sha1, hash))
+ if (hashcmp(istate->oid.hash, hash))
goto out;
close(fd);
@@ -2264,7 +2293,7 @@ static int do_write_index(struct index_state *istate, struct tempfile *tempfile,
if (!istate->version) {
istate->version = get_index_format_default();
- if (getenv("GIT_TEST_SPLIT_INDEX"))
+ if (git_env_bool("GIT_TEST_SPLIT_INDEX", 0))
init_split_index(istate);
}
@@ -2369,7 +2398,7 @@ static int do_write_index(struct index_state *istate, struct tempfile *tempfile,
return -1;
}
- if (ce_flush(&c, newfd, istate->sha1))
+ if (ce_flush(&c, newfd, istate->oid.hash))
return -1;
if (close_tempfile_gently(tempfile)) {
error(_("could not close '%s'"), tempfile->filename.buf);
@@ -2493,10 +2522,10 @@ static int write_shared_index(struct index_state *istate,
return ret;
}
ret = rename_tempfile(temp,
- git_path("sharedindex.%s", sha1_to_hex(si->base->sha1)));
+ git_path("sharedindex.%s", oid_to_hex(&si->base->oid)));
if (!ret) {
- hashcpy(si->base_sha1, si->base->sha1);
- clean_shared_index_files(sha1_to_hex(si->base->sha1));
+ oidcpy(&si->base_oid, &si->base->oid);
+ clean_shared_index_files(oid_to_hex(&si->base->oid));
}
return ret;
@@ -2538,19 +2567,25 @@ int write_locked_index(struct index_state *istate, struct lock_file *lock,
int new_shared_index, ret;
struct split_index *si = istate->split_index;
+ if ((flags & SKIP_IF_UNCHANGED) && !istate->cache_changed) {
+ if (flags & COMMIT_LOCK)
+ rollback_lock_file(lock);
+ return 0;
+ }
+
if (istate->fsmonitor_last_update)
fill_fsmonitor_bitmap(istate);
if (!si || alternate_index_output ||
(istate->cache_changed & ~EXTMASK)) {
if (si)
- hashclr(si->base_sha1);
+ oidclr(&si->base_oid);
ret = do_write_locked_index(istate, lock, flags);
goto out;
}
- if (getenv("GIT_TEST_SPLIT_INDEX")) {
- int v = si->base_sha1[0];
+ if (git_env_bool("GIT_TEST_SPLIT_INDEX", 0)) {
+ int v = si->base_oid.hash[0];
if ((v & 15) < 6)
istate->cache_changed |= SPLIT_INDEX_ORDERED;
}
@@ -2565,7 +2600,7 @@ int write_locked_index(struct index_state *istate, struct lock_file *lock,
temp = mks_tempfile(git_path("sharedindex_XXXXXX"));
if (!temp) {
- hashclr(si->base_sha1);
+ oidclr(&si->base_oid);
ret = do_write_locked_index(istate, lock, flags);
goto out;
}
@@ -2585,7 +2620,7 @@ int write_locked_index(struct index_state *istate, struct lock_file *lock,
/* Freshen the shared index only if the split-index was written */
if (!ret && !new_shared_index) {
const char *shared_index = git_path("sharedindex.%s",
- sha1_to_hex(si->base_sha1));
+ oid_to_hex(&si->base_oid));
freshen_shared_index(shared_index, 1);
}
@@ -2683,7 +2718,7 @@ void *read_blob_data_from_index(const struct index_state *istate,
}
if (pos < 0)
return NULL;
- data = read_sha1_file(istate->cache[pos]->oid.hash, &type, &sz);
+ data = read_object_file(&istate->cache[pos]->oid, &type, &sz);
if (!data || type != OBJ_BLOB) {
free(data);
return NULL;
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-16 08:42:22 +0000