untracked cache: load from UNTR index extension
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy
Junio C Hamano
parent
83c094ad0d
commit
f9e6c64958
219
dir.c
219
dir.c
@ -2283,3 +2283,222 @@ void write_untracked_extension(struct strbuf *out, struct untracked_cache *untra
|
||||
strbuf_release(&wd.sb_stat);
|
||||
strbuf_release(&wd.sb_sha1);
|
||||
}
|
||||
|
||||
static void free_untracked(struct untracked_cache_dir *ucd)
|
||||
{
|
||||
int i;
|
||||
if (!ucd)
|
||||
return;
|
||||
for (i = 0; i < ucd->dirs_nr; i++)
|
||||
free_untracked(ucd->dirs[i]);
|
||||
for (i = 0; i < ucd->untracked_nr; i++)
|
||||
free(ucd->untracked[i]);
|
||||
free(ucd->untracked);
|
||||
free(ucd->dirs);
|
||||
free(ucd);
|
||||
}
|
||||
|
||||
void free_untracked_cache(struct untracked_cache *uc)
|
||||
{
|
||||
if (uc)
|
||||
free_untracked(uc->root);
|
||||
free(uc);
|
||||
}
|
||||
|
||||
struct read_data {
|
||||
int index;
|
||||
struct untracked_cache_dir **ucd;
|
||||
struct ewah_bitmap *check_only;
|
||||
struct ewah_bitmap *valid;
|
||||
struct ewah_bitmap *sha1_valid;
|
||||
const unsigned char *data;
|
||||
const unsigned char *end;
|
||||
};
|
||||
|
||||
static void stat_data_from_disk(struct stat_data *to, const struct stat_data *from)
|
||||
{
|
||||
to->sd_ctime.sec = get_be32(&from->sd_ctime.sec);
|
||||
to->sd_ctime.nsec = get_be32(&from->sd_ctime.nsec);
|
||||
to->sd_mtime.sec = get_be32(&from->sd_mtime.sec);
|
||||
to->sd_mtime.nsec = get_be32(&from->sd_mtime.nsec);
|
||||
to->sd_dev = get_be32(&from->sd_dev);
|
||||
to->sd_ino = get_be32(&from->sd_ino);
|
||||
to->sd_uid = get_be32(&from->sd_uid);
|
||||
to->sd_gid = get_be32(&from->sd_gid);
|
||||
to->sd_size = get_be32(&from->sd_size);
|
||||
}
|
||||
|
||||
static int read_one_dir(struct untracked_cache_dir **untracked_,
|
||||
struct read_data *rd)
|
||||
{
|
||||
struct untracked_cache_dir ud, *untracked;
|
||||
const unsigned char *next, *data = rd->data, *end = rd->end;
|
||||
unsigned int value;
|
||||
int i, len;
|
||||
|
||||
memset(&ud, 0, sizeof(ud));
|
||||
|
||||
next = data;
|
||||
value = decode_varint(&next);
|
||||
if (next > end)
|
||||
return -1;
|
||||
ud.recurse = 1;
|
||||
ud.untracked_alloc = value;
|
||||
ud.untracked_nr = value;
|
||||
if (ud.untracked_nr)
|
||||
ud.untracked = xmalloc(sizeof(*ud.untracked) * ud.untracked_nr);
|
||||
data = next;
|
||||
|
||||
next = data;
|
||||
ud.dirs_alloc = ud.dirs_nr = decode_varint(&next);
|
||||
if (next > end)
|
||||
return -1;
|
||||
ud.dirs = xmalloc(sizeof(*ud.dirs) * ud.dirs_nr);
|
||||
data = next;
|
||||
|
||||
len = strlen((const char *)data);
|
||||
next = data + len + 1;
|
||||
if (next > rd->end)
|
||||
return -1;
|
||||
*untracked_ = untracked = xmalloc(sizeof(*untracked) + len);
|
||||
memcpy(untracked, &ud, sizeof(ud));
|
||||
memcpy(untracked->name, data, len + 1);
|
||||
data = next;
|
||||
|
||||
for (i = 0; i < untracked->untracked_nr; i++) {
|
||||
len = strlen((const char *)data);
|
||||
next = data + len + 1;
|
||||
if (next > rd->end)
|
||||
return -1;
|
||||
untracked->untracked[i] = xstrdup((const char*)data);
|
||||
data = next;
|
||||
}
|
||||
|
||||
rd->ucd[rd->index++] = untracked;
|
||||
rd->data = data;
|
||||
|
||||
for (i = 0; i < untracked->dirs_nr; i++) {
|
||||
len = read_one_dir(untracked->dirs + i, rd);
|
||||
if (len < 0)
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void set_check_only(size_t pos, void *cb)
|
||||
{
|
||||
struct read_data *rd = cb;
|
||||
struct untracked_cache_dir *ud = rd->ucd[pos];
|
||||
ud->check_only = 1;
|
||||
}
|
||||
|
||||
static void read_stat(size_t pos, void *cb)
|
||||
{
|
||||
struct read_data *rd = cb;
|
||||
struct untracked_cache_dir *ud = rd->ucd[pos];
|
||||
if (rd->data + sizeof(struct stat_data) > rd->end) {
|
||||
rd->data = rd->end + 1;
|
||||
return;
|
||||
}
|
||||
stat_data_from_disk(&ud->stat_data, (struct stat_data *)rd->data);
|
||||
rd->data += sizeof(struct stat_data);
|
||||
ud->valid = 1;
|
||||
}
|
||||
|
||||
static void read_sha1(size_t pos, void *cb)
|
||||
{
|
||||
struct read_data *rd = cb;
|
||||
struct untracked_cache_dir *ud = rd->ucd[pos];
|
||||
if (rd->data + 20 > rd->end) {
|
||||
rd->data = rd->end + 1;
|
||||
return;
|
||||
}
|
||||
hashcpy(ud->exclude_sha1, rd->data);
|
||||
rd->data += 20;
|
||||
}
|
||||
|
||||
static void load_sha1_stat(struct sha1_stat *sha1_stat,
|
||||
const struct stat_data *stat,
|
||||
const unsigned char *sha1)
|
||||
{
|
||||
stat_data_from_disk(&sha1_stat->stat, stat);
|
||||
hashcpy(sha1_stat->sha1, sha1);
|
||||
sha1_stat->valid = 1;
|
||||
}
|
||||
|
||||
struct untracked_cache *read_untracked_extension(const void *data, unsigned long sz)
|
||||
{
|
||||
const struct ondisk_untracked_cache *ouc;
|
||||
struct untracked_cache *uc;
|
||||
struct read_data rd;
|
||||
const unsigned char *next = data, *end = (const unsigned char *)data + sz;
|
||||
int len;
|
||||
|
||||
if (sz <= 1 || end[-1] != '\0')
|
||||
return NULL;
|
||||
end--;
|
||||
|
||||
ouc = (const struct ondisk_untracked_cache *)next;
|
||||
if (next + ouc_size(0) > end)
|
||||
return NULL;
|
||||
|
||||
uc = xcalloc(1, sizeof(*uc));
|
||||
load_sha1_stat(&uc->ss_info_exclude, &ouc->info_exclude_stat,
|
||||
ouc->info_exclude_sha1);
|
||||
load_sha1_stat(&uc->ss_excludes_file, &ouc->excludes_file_stat,
|
||||
ouc->excludes_file_sha1);
|
||||
uc->dir_flags = get_be32(&ouc->dir_flags);
|
||||
uc->exclude_per_dir = xstrdup(ouc->exclude_per_dir);
|
||||
/* NUL after exclude_per_dir is covered by sizeof(*ouc) */
|
||||
next += ouc_size(strlen(ouc->exclude_per_dir));
|
||||
if (next >= end)
|
||||
goto done2;
|
||||
|
||||
len = decode_varint(&next);
|
||||
if (next > end || len == 0)
|
||||
goto done2;
|
||||
|
||||
rd.valid = ewah_new();
|
||||
rd.check_only = ewah_new();
|
||||
rd.sha1_valid = ewah_new();
|
||||
rd.data = next;
|
||||
rd.end = end;
|
||||
rd.index = 0;
|
||||
rd.ucd = xmalloc(sizeof(*rd.ucd) * len);
|
||||
|
||||
if (read_one_dir(&uc->root, &rd) || rd.index != len)
|
||||
goto done;
|
||||
|
||||
next = rd.data;
|
||||
len = ewah_read_mmap(rd.valid, next, end - next);
|
||||
if (len < 0)
|
||||
goto done;
|
||||
|
||||
next += len;
|
||||
len = ewah_read_mmap(rd.check_only, next, end - next);
|
||||
if (len < 0)
|
||||
goto done;
|
||||
|
||||
next += len;
|
||||
len = ewah_read_mmap(rd.sha1_valid, next, end - next);
|
||||
if (len < 0)
|
||||
goto done;
|
||||
|
||||
ewah_each_bit(rd.check_only, set_check_only, &rd);
|
||||
rd.data = next + len;
|
||||
ewah_each_bit(rd.valid, read_stat, &rd);
|
||||
ewah_each_bit(rd.sha1_valid, read_sha1, &rd);
|
||||
next = rd.data;
|
||||
|
||||
done:
|
||||
free(rd.ucd);
|
||||
ewah_free(rd.valid);
|
||||
ewah_free(rd.check_only);
|
||||
ewah_free(rd.sha1_valid);
|
||||
done2:
|
||||
if (next != end) {
|
||||
free_untracked_cache(uc);
|
||||
uc = NULL;
|
||||
}
|
||||
return uc;
|
||||
}
|
||||
|
||||
2
dir.h
2
dir.h
@ -298,5 +298,7 @@ static inline int dir_path_match(const struct dir_entry *ent,
|
||||
has_trailing_dir);
|
||||
}
|
||||
|
||||
void free_untracked_cache(struct untracked_cache *);
|
||||
struct untracked_cache *read_untracked_extension(const void *data, unsigned long sz);
|
||||
void write_untracked_extension(struct strbuf *out, struct untracked_cache *untracked);
|
||||
#endif
|
||||
|
||||
@ -1371,6 +1371,9 @@ static int read_index_extension(struct index_state *istate,
|
||||
if (read_link_extension(istate, data, sz))
|
||||
return -1;
|
||||
break;
|
||||
case CACHE_EXT_UNTRACKED:
|
||||
istate->untracked = read_untracked_extension(data, sz);
|
||||
break;
|
||||
default:
|
||||
if (*ext < 'A' || 'Z' < *ext)
|
||||
return error("index uses %.4s extension, which we do not understand",
|
||||
@ -1662,6 +1665,8 @@ int discard_index(struct index_state *istate)
|
||||
istate->cache = NULL;
|
||||
istate->cache_alloc = 0;
|
||||
discard_split_index(istate);
|
||||
free_untracked_cache(istate->untracked);
|
||||
istate->untracked = NULL;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user