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-rw-r--r--read-cache.c104
1 files changed, 41 insertions, 63 deletions
diff --git a/read-cache.c b/read-cache.c
index 27e9fc6..6c8f395 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -157,16 +157,6 @@ static int ce_modified_check_fs(struct cache_entry *ce, struct stat *st)
return 0;
}
-static int is_empty_blob_sha1(const unsigned char *sha1)
-{
- static const unsigned char empty_blob_sha1[20] = {
- 0xe6,0x9d,0xe2,0x9b,0xb2,0xd1,0xd6,0x43,0x4b,0x8b,
- 0x29,0xae,0x77,0x5a,0xd8,0xc2,0xe4,0x8c,0x53,0x91
- };
-
- return !hashcmp(sha1, empty_blob_sha1);
-}
-
static int ce_match_stat_basic(struct cache_entry *ce, struct stat *st)
{
unsigned int changed = 0;
@@ -1120,11 +1110,16 @@ int refresh_index(struct index_state *istate, unsigned int flags, const char **p
struct cache_entry *ce, *new;
int cache_errno = 0;
int changed = 0;
+ int filtered = 0;
ce = istate->cache[i];
if (ignore_submodules && S_ISGITLINK(ce->ce_mode))
continue;
+ if (pathspec &&
+ !match_pathspec(pathspec, ce->name, strlen(ce->name), 0, seen))
+ filtered = 1;
+
if (ce_stage(ce)) {
while ((i < istate->cache_nr) &&
! strcmp(istate->cache[i]->name, ce->name))
@@ -1132,12 +1127,14 @@ int refresh_index(struct index_state *istate, unsigned int flags, const char **p
i--;
if (allow_unmerged)
continue;
- show_file(unmerged_fmt, ce->name, in_porcelain, &first, header_msg);
+ if (!filtered)
+ show_file(unmerged_fmt, ce->name, in_porcelain,
+ &first, header_msg);
has_errors = 1;
continue;
}
- if (pathspec && !match_pathspec(pathspec, ce->name, strlen(ce->name), 0, seen))
+ if (filtered)
continue;
new = refresh_cache_ent(istate, ce, options, &cache_errno, &changed);
@@ -1224,29 +1221,18 @@ int read_index(struct index_state *istate)
return read_index_from(istate, get_index_file());
}
-static void convert_from_disk(struct ondisk_cache_entry *ondisk, struct cache_entry *ce)
+static struct cache_entry *create_from_disk(struct ondisk_cache_entry *ondisk)
{
+ struct cache_entry *ce;
size_t len;
const char *name;
+ unsigned int flags;
- ce->ce_ctime.sec = ntohl(ondisk->ctime.sec);
- ce->ce_mtime.sec = ntohl(ondisk->mtime.sec);
- ce->ce_ctime.nsec = ntohl(ondisk->ctime.nsec);
- ce->ce_mtime.nsec = ntohl(ondisk->mtime.nsec);
- ce->ce_dev = ntohl(ondisk->dev);
- ce->ce_ino = ntohl(ondisk->ino);
- ce->ce_mode = ntohl(ondisk->mode);
- ce->ce_uid = ntohl(ondisk->uid);
- ce->ce_gid = ntohl(ondisk->gid);
- ce->ce_size = ntohl(ondisk->size);
/* On-disk flags are just 16 bits */
- ce->ce_flags = ntohs(ondisk->flags);
-
- hashcpy(ce->sha1, ondisk->sha1);
+ flags = ntohs(ondisk->flags);
+ len = flags & CE_NAMEMASK;
- len = ce->ce_flags & CE_NAMEMASK;
-
- if (ce->ce_flags & CE_EXTENDED) {
+ if (flags & CE_EXTENDED) {
struct ondisk_cache_entry_extended *ondisk2;
int extended_flags;
ondisk2 = (struct ondisk_cache_entry_extended *)ondisk;
@@ -1254,7 +1240,7 @@ static void convert_from_disk(struct ondisk_cache_entry *ondisk, struct cache_en
/* We do not yet understand any bit out of CE_EXTENDED_FLAGS */
if (extended_flags & ~CE_EXTENDED_FLAGS)
die("Unknown index entry format %08x", extended_flags);
- ce->ce_flags |= extended_flags;
+ flags |= extended_flags;
name = ondisk2->name;
}
else
@@ -1262,25 +1248,26 @@ static void convert_from_disk(struct ondisk_cache_entry *ondisk, struct cache_en
if (len == CE_NAMEMASK)
len = strlen(name);
- /*
- * NEEDSWORK: If the original index is crafted, this copy could
- * go unchecked.
- */
- memcpy(ce->name, name, len + 1);
-}
-static inline size_t estimate_cache_size(size_t ondisk_size, unsigned int entries)
-{
- size_t fix_size_mem = offsetof(struct cache_entry, name);
- size_t fix_size_dsk = offsetof(struct ondisk_cache_entry, name);
- long per_entry = (fix_size_mem - fix_size_dsk + 7) & ~7;
+ ce = xmalloc(cache_entry_size(len));
- /*
- * Alignment can cause differences. This should be "alignof", but
- * since that's a gcc'ism, just use the size of a pointer.
- */
- per_entry += sizeof(void *);
- return ondisk_size + entries*per_entry;
+ ce->ce_ctime.sec = ntohl(ondisk->ctime.sec);
+ ce->ce_mtime.sec = ntohl(ondisk->mtime.sec);
+ ce->ce_ctime.nsec = ntohl(ondisk->ctime.nsec);
+ ce->ce_mtime.nsec = ntohl(ondisk->mtime.nsec);
+ ce->ce_dev = ntohl(ondisk->dev);
+ ce->ce_ino = ntohl(ondisk->ino);
+ ce->ce_mode = ntohl(ondisk->mode);
+ ce->ce_uid = ntohl(ondisk->uid);
+ ce->ce_gid = ntohl(ondisk->gid);
+ ce->ce_size = ntohl(ondisk->size);
+ ce->ce_flags = flags;
+
+ hashcpy(ce->sha1, ondisk->sha1);
+
+ memcpy(ce->name, name, len);
+ ce->name[len] = '\0';
+ return ce;
}
/* remember to discard_cache() before reading a different cache! */
@@ -1288,7 +1275,7 @@ int read_index_from(struct index_state *istate, const char *path)
{
int fd, i;
struct stat st;
- unsigned long src_offset, dst_offset;
+ unsigned long src_offset;
struct cache_header *hdr;
void *mmap;
size_t mmap_size;
@@ -1327,29 +1314,18 @@ int read_index_from(struct index_state *istate, const char *path)
istate->cache_nr = ntohl(hdr->hdr_entries);
istate->cache_alloc = alloc_nr(istate->cache_nr);
istate->cache = xcalloc(istate->cache_alloc, sizeof(struct cache_entry *));
-
- /*
- * The disk format is actually larger than the in-memory format,
- * due to space for nsec etc, so even though the in-memory one
- * has room for a few more flags, we can allocate using the same
- * index size
- */
- istate->alloc = xmalloc(estimate_cache_size(mmap_size, istate->cache_nr));
istate->initialized = 1;
src_offset = sizeof(*hdr);
- dst_offset = 0;
for (i = 0; i < istate->cache_nr; i++) {
struct ondisk_cache_entry *disk_ce;
struct cache_entry *ce;
disk_ce = (struct ondisk_cache_entry *)((char *)mmap + src_offset);
- ce = (struct cache_entry *)((char *)istate->alloc + dst_offset);
- convert_from_disk(disk_ce, ce);
+ ce = create_from_disk(disk_ce);
set_index_entry(istate, i, ce);
src_offset += ondisk_ce_size(ce);
- dst_offset += ce_size(ce);
}
istate->timestamp.sec = st.st_mtime;
istate->timestamp.nsec = ST_MTIME_NSEC(st);
@@ -1383,11 +1359,15 @@ unmap:
int is_index_unborn(struct index_state *istate)
{
- return (!istate->cache_nr && !istate->alloc && !istate->timestamp.sec);
+ return (!istate->cache_nr && !istate->timestamp.sec);
}
int discard_index(struct index_state *istate)
{
+ int i;
+
+ for (i = 0; i < istate->cache_nr; i++)
+ free(istate->cache[i]);
resolve_undo_clear_index(istate);
istate->cache_nr = 0;
istate->cache_changed = 0;
@@ -1396,8 +1376,6 @@ int discard_index(struct index_state *istate)
istate->name_hash_initialized = 0;
free_hash(&istate->name_hash);
cache_tree_free(&(istate->cache_tree));
- free(istate->alloc);
- istate->alloc = NULL;
istate->initialized = 0;
/* no need to throw away allocated active_cache */
generated by cgit v0.10.2-6-g49f6 at 2024-04-24 06:31:06 (GMT)