diff options
author | Andrew Tridgell <tridge@samba.org> | 2003-12-10 03:02:12 +0000 |
---|---|---|
committer | Andrew Tridgell <tridge@samba.org> | 2003-12-10 03:02:12 +0000 |
commit | 3c76426f2e343df2194825ae2e0ef84f4ad4c6ac (patch) | |
tree | b73a43828bf249b144cc1d2476ecdd778d5386f8 /source4/lib/tdb | |
parent | 303454cae1766ffd5b19bf24b259519303b7bc90 (diff) | |
download | samba-3c76426f2e343df2194825ae2e0ef84f4ad4c6ac.tar.gz samba-3c76426f2e343df2194825ae2e0ef84f4ad4c6ac.tar.bz2 samba-3c76426f2e343df2194825ae2e0ef84f4ad4c6ac.zip |
* removed some unused code
* updated tdb to latest version from Samba3
* removed some extraneous ';' in tdbutil.c (Thanks to Erlend Aasland
for pointing this out)
(This used to be commit f3eaf270e57d8d2e2157a6a36e260860c7f71c19)
Diffstat (limited to 'source4/lib/tdb')
-rw-r--r-- | source4/lib/tdb/spinlock.c | 2 | ||||
-rw-r--r-- | source4/lib/tdb/spinlock.h | 6 | ||||
-rw-r--r-- | source4/lib/tdb/tdb.c | 91 | ||||
-rw-r--r-- | source4/lib/tdb/tdbutil.c | 124 |
4 files changed, 174 insertions, 49 deletions
diff --git a/source4/lib/tdb/spinlock.c b/source4/lib/tdb/spinlock.c index 2370ce3bdd..3fddeafb2c 100644 --- a/source4/lib/tdb/spinlock.c +++ b/source4/lib/tdb/spinlock.c @@ -372,7 +372,7 @@ int tdb_create_rwlocks(int fd, unsigned int hash_size) unsigned size, i; tdb_rwlock_t *rwlocks; - size = (hash_size + 1) * sizeof(tdb_rwlock_t); + size = TDB_SPINLOCK_SIZE(hash_size); rwlocks = malloc(size); if (!rwlocks) return -1; diff --git a/source4/lib/tdb/spinlock.h b/source4/lib/tdb/spinlock.h index d6a2ac6eb8..967fe37457 100644 --- a/source4/lib/tdb/spinlock.h +++ b/source4/lib/tdb/spinlock.h @@ -1,7 +1,7 @@ #ifndef __SPINLOCK_H__ #define __SPINLOCK_H__ -#if HAVE_CONFIG_H +#ifdef HAVE_CONFIG_H #include <config.h> #endif @@ -39,6 +39,8 @@ int tdb_spinunlock(TDB_CONTEXT *tdb, int list, int rw_type); int tdb_create_rwlocks(int fd, unsigned int hash_size); int tdb_clear_spinlocks(TDB_CONTEXT *tdb); +#define TDB_SPINLOCK_SIZE(hash_size) (((hash_size) + 1) * sizeof(tdb_rwlock_t)) + #else /* !USE_SPINLOCKS */ #if 0 #define tdb_create_rwlocks(fd, hash_size) 0 @@ -50,6 +52,8 @@ int tdb_spinunlock(TDB_CONTEXT *tdb, int list, int rw_type); int tdb_create_rwlocks(int fd, unsigned int hash_size); #endif int tdb_clear_spinlocks(TDB_CONTEXT *tdb); +#define TDB_SPINLOCK_SIZE(hash_size) 0 + #endif #endif diff --git a/source4/lib/tdb/tdb.c b/source4/lib/tdb/tdb.c index 513fbce519..fc210f42d4 100644 --- a/source4/lib/tdb/tdb.c +++ b/source4/lib/tdb/tdb.c @@ -20,6 +20,27 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + + +/* NOTE: If you use tdbs under valgrind, and in particular if you run + * tdbtorture, you may get spurious "uninitialized value" warnings. I + * think this is because valgrind doesn't understand that the mmap'd + * area may be written to by other processes. Memory can, from the + * point of view of the grinded process, spontaneously become + * initialized. + * + * I can think of a few solutions. [mbp 20030311] + * + * 1 - Write suppressions for Valgrind so that it doesn't complain + * about this. Probably the most reasonable but people need to + * remember to use them. + * + * 2 - Use IO not mmap when running under valgrind. Not so nice. + * + * 3 - Use the special valgrind macros to mark memory as valid at the + * right time. Probably too hard -- the process just doesn't know. + */ + #ifdef STANDALONE #if HAVE_CONFIG_H #include <config.h> @@ -56,6 +77,8 @@ #define TDB_DEAD(r) ((r)->magic == TDB_DEAD_MAGIC) #define TDB_BAD_MAGIC(r) ((r)->magic != TDB_MAGIC && !TDB_DEAD(r)) #define TDB_HASH_TOP(hash) (FREELIST_TOP + (BUCKET(hash)+1)*sizeof(tdb_off)) +#define TDB_DATA_START(hash_size) (TDB_HASH_TOP(hash_size-1) + TDB_SPINLOCK_SIZE(hash_size)) + /* NB assumes there is a local variable called "tdb" that is the * current context, also takes doubly-parenthesized print-style @@ -214,10 +237,15 @@ static int tdb_brlock(TDB_CONTEXT *tdb, tdb_off offset, tdb->fd, offset, rw_type, lck_type)); } /* Was it an alarm timeout ? */ - if (errno == EINTR && palarm_fired && *palarm_fired) + if (errno == EINTR && palarm_fired && *palarm_fired) { + TDB_LOG((tdb, 5, "tdb_brlock timed out (fd=%d) at offset %d rw_type=%d lck_type=%d\n", + tdb->fd, offset, rw_type, lck_type)); return TDB_ERRCODE(TDB_ERR_LOCK_TIMEOUT, -1); + } /* Otherwise - generic lock error. */ /* errno set by fcntl */ + TDB_LOG((tdb, 5, "tdb_brlock failed (fd=%d) at offset %d rw_type=%d lck_type=%d: %s\n", + tdb->fd, offset, rw_type, lck_type, strerror(errno))); return TDB_ERRCODE(TDB_ERR_LOCK, -1); } return 0; @@ -642,10 +670,10 @@ static int tdb_free(TDB_CONTEXT *tdb, tdb_off offset, struct list_struct *rec) left: /* Look left */ left = offset - sizeof(tdb_off); - if (left > TDB_HASH_TOP(tdb->header.hash_size-1)) { + if (left > TDB_DATA_START(tdb->header.hash_size)) { struct list_struct l; tdb_off leftsize; - + /* Read in tailer and jump back to header */ if (ofs_read(tdb, left, &leftsize) == -1) { TDB_LOG((tdb, 0, "tdb_free: left offset read failed at %u\n", left)); @@ -994,12 +1022,11 @@ static int tdb_keylocked(TDB_CONTEXT *tdb, u32 hash) } /* As tdb_find, but if you succeed, keep the lock */ -static tdb_off tdb_find_lock(TDB_CONTEXT *tdb, TDB_DATA key, int locktype, +static tdb_off tdb_find_lock_hash(TDB_CONTEXT *tdb, TDB_DATA key, u32 hash, int locktype, struct list_struct *rec) { - u32 hash, rec_ptr; + u32 rec_ptr; - hash = tdb_hash(&key); if (!tdb_keylocked(tdb, hash)) return 0; if (tdb_lock(tdb, BUCKET(hash), locktype) == -1) @@ -1040,13 +1067,13 @@ const char *tdb_errorstr(TDB_CONTEXT *tdb) on failure return -1. */ -static int tdb_update(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf) +static int tdb_update_hash(TDB_CONTEXT *tdb, TDB_DATA key, u32 hash, TDB_DATA dbuf) { struct list_struct rec; tdb_off rec_ptr; /* find entry */ - if (!(rec_ptr = tdb_find(tdb, key, tdb_hash(&key), &rec))) + if (!(rec_ptr = tdb_find(tdb, key, hash, &rec))) return -1; /* must be long enough key, data and tailer */ @@ -1080,9 +1107,11 @@ TDB_DATA tdb_fetch(TDB_CONTEXT *tdb, TDB_DATA key) tdb_off rec_ptr; struct list_struct rec; TDB_DATA ret; + u32 hash; /* find which hash bucket it is in */ - if (!(rec_ptr = tdb_find_lock(tdb,key,F_RDLCK,&rec))) + hash = tdb_hash(&key); + if (!(rec_ptr = tdb_find_lock_hash(tdb,key,hash,F_RDLCK,&rec))) return tdb_null; if (rec.data_len) @@ -1101,16 +1130,22 @@ TDB_DATA tdb_fetch(TDB_CONTEXT *tdb, TDB_DATA key) this doesn't match the conventions in the rest of this module, but is compatible with gdbm */ -int tdb_exists(TDB_CONTEXT *tdb, TDB_DATA key) +static int tdb_exists_hash(TDB_CONTEXT *tdb, TDB_DATA key, u32 hash) { struct list_struct rec; - if (tdb_find_lock(tdb, key, F_RDLCK, &rec) == 0) + if (tdb_find_lock_hash(tdb, key, hash, F_RDLCK, &rec) == 0) return 0; tdb_unlock(tdb, BUCKET(rec.full_hash), F_RDLCK); return 1; } +int tdb_exists(TDB_CONTEXT *tdb, TDB_DATA key) +{ + u32 hash = tdb_hash(&key); + return tdb_exists_hash(tdb, key, hash); +} + /* record lock stops delete underneath */ static int lock_record(TDB_CONTEXT *tdb, tdb_off off) { @@ -1236,7 +1271,8 @@ static int tdb_next_lock(TDB_CONTEXT *tdb, struct tdb_traverse_lock *tlock, /* Try to clean dead ones from old traverses */ current = tlock->off; tlock->off = rec->next; - if (do_delete(tdb, current, rec) != 0) + if (!tdb->read_only && + do_delete(tdb, current, rec) != 0) goto fail; } tdb_unlock(tdb, tlock->hash, F_WRLCK); @@ -1366,7 +1402,7 @@ TDB_DATA tdb_nextkey(TDB_CONTEXT *tdb, TDB_DATA oldkey) if (!tdb->travlocks.off) { /* No previous element: do normal find, and lock record */ - tdb->travlocks.off = tdb_find_lock(tdb, oldkey, F_WRLCK, &rec); + tdb->travlocks.off = tdb_find_lock_hash(tdb, oldkey, tdb_hash(&oldkey), F_WRLCK, &rec); if (!tdb->travlocks.off) return tdb_null; tdb->travlocks.hash = BUCKET(rec.full_hash); @@ -1394,13 +1430,13 @@ TDB_DATA tdb_nextkey(TDB_CONTEXT *tdb, TDB_DATA oldkey) } /* delete an entry in the database given a key */ -int tdb_delete(TDB_CONTEXT *tdb, TDB_DATA key) +static int tdb_delete_hash(TDB_CONTEXT *tdb, TDB_DATA key, u32 hash) { tdb_off rec_ptr; struct list_struct rec; int ret; - if (!(rec_ptr = tdb_find_lock(tdb, key, F_WRLCK, &rec))) + if (!(rec_ptr = tdb_find_lock_hash(tdb, key, hash, F_WRLCK, &rec))) return -1; ret = do_delete(tdb, rec_ptr, &rec); if (tdb_unlock(tdb, BUCKET(rec.full_hash), F_WRLCK) != 0) @@ -1408,6 +1444,12 @@ int tdb_delete(TDB_CONTEXT *tdb, TDB_DATA key) return ret; } +int tdb_delete(TDB_CONTEXT *tdb, TDB_DATA key) +{ + u32 hash = tdb_hash(&key); + return tdb_delete_hash(tdb, key, hash); +} + /* store an element in the database, replacing any existing element with the same key @@ -1430,13 +1472,13 @@ int tdb_store(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, int flag) /* check for it existing, on insert. */ if (flag == TDB_INSERT) { - if (tdb_exists(tdb, key)) { + if (tdb_exists_hash(tdb, key, hash)) { tdb->ecode = TDB_ERR_EXISTS; goto fail; } } else { /* first try in-place update, on modify or replace. */ - if (tdb_update(tdb, key, dbuf) == 0) + if (tdb_update_hash(tdb, key, hash, dbuf) == 0) goto out; if (flag == TDB_MODIFY && tdb->ecode == TDB_ERR_NOEXIST) goto fail; @@ -1448,7 +1490,7 @@ int tdb_store(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, int flag) care. Doing this first reduces fragmentation, and avoids coalescing with `allocated' block before it's updated. */ if (flag != TDB_INSERT) - tdb_delete(tdb, key); + tdb_delete_hash(tdb, key, hash); /* Copy key+value *before* allocating free space in case malloc fails and we are left with a dead spot in the tdb. */ @@ -1497,13 +1539,13 @@ fail: is <= the old data size and the key exists. on failure return -1. Record must be locked before calling. */ -static int tdb_append_inplace(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA new_dbuf) +static int tdb_append_inplace(TDB_CONTEXT *tdb, TDB_DATA key, u32 hash, TDB_DATA new_dbuf) { struct list_struct rec; tdb_off rec_ptr; /* find entry */ - if (!(rec_ptr = tdb_find(tdb, key, tdb_hash(&key), &rec))) + if (!(rec_ptr = tdb_find(tdb, key, hash, &rec))) return -1; /* Append of 0 is always ok. */ @@ -1545,7 +1587,7 @@ int tdb_append(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA new_dbuf) return -1; /* first try in-place. */ - if (tdb_append_inplace(tdb, key, new_dbuf) == 0) + if (tdb_append_inplace(tdb, key, hash, new_dbuf) == 0) goto out; /* reset the error code potentially set by the tdb_append_inplace() */ @@ -1588,7 +1630,7 @@ int tdb_append(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA new_dbuf) care. Doing this first reduces fragmentation, and avoids coalescing with `allocated' block before it's updated. */ - tdb_delete(tdb, key); + tdb_delete_hash(tdb, key, hash); if (!(rec_ptr = tdb_allocate(tdb, key.dsize + new_data_size, &rec))) goto fail; @@ -1728,8 +1770,7 @@ TDB_CONTEXT *tdb_open_ex(const char *name, int hash_size, int tdb_flags, if (read(tdb->fd, &tdb->header, sizeof(tdb->header)) != sizeof(tdb->header) || strcmp(tdb->header.magic_food, TDB_MAGIC_FOOD) != 0 - || tdb->header.version != TDB_VERSION - || (tdb->header.hash_size != hash_size + || (tdb->header.version != TDB_VERSION && !(rev = (tdb->header.version==TDB_BYTEREV(TDB_VERSION))))) { /* its not a valid database - possibly initialise it */ if (!(open_flags & O_CREAT) || tdb_new_database(tdb, hash_size) == -1) { @@ -1934,6 +1975,8 @@ int tdb_lockkeys(TDB_CONTEXT *tdb, u32 number, TDB_DATA keys[]) void tdb_unlockkeys(TDB_CONTEXT *tdb) { u32 i; + if (!tdb->lockedkeys) + return; for (i = 0; i < tdb->lockedkeys[0]; i++) tdb_unlock(tdb, tdb->lockedkeys[i+1], F_WRLCK); SAFE_FREE(tdb->lockedkeys); diff --git a/source4/lib/tdb/tdbutil.c b/source4/lib/tdb/tdbutil.c index 0d8f6128cc..ce5188300c 100644 --- a/source4/lib/tdb/tdbutil.c +++ b/source4/lib/tdb/tdbutil.c @@ -266,7 +266,7 @@ BOOL tdb_store_uint32(TDB_CONTEXT *tdb, const char *keystr, uint32 value) on failure. ****************************************************************************/ -int tdb_store_by_string(TDB_CONTEXT *tdb, const char *keystr, TDB_DATA data, int flags) +int tdb_store_bystring(TDB_CONTEXT *tdb, const char *keystr, TDB_DATA data, int flags) { TDB_DATA key = make_tdb_data(keystr, strlen(keystr)+1); @@ -278,7 +278,7 @@ int tdb_store_by_string(TDB_CONTEXT *tdb, const char *keystr, TDB_DATA data, int free() on the result dptr. ****************************************************************************/ -TDB_DATA tdb_fetch_by_string(TDB_CONTEXT *tdb, const char *keystr) +TDB_DATA tdb_fetch_bystring(TDB_CONTEXT *tdb, const char *keystr) { TDB_DATA key = make_tdb_data(keystr, strlen(keystr)+1); @@ -289,7 +289,7 @@ TDB_DATA tdb_fetch_by_string(TDB_CONTEXT *tdb, const char *keystr) Delete an entry using a null terminated string key. ****************************************************************************/ -int tdb_delete_by_string(TDB_CONTEXT *tdb, const char *keystr) +int tdb_delete_bystring(TDB_CONTEXT *tdb, const char *keystr) { TDB_DATA key = make_tdb_data(keystr, strlen(keystr)+1); @@ -311,7 +311,7 @@ int32 tdb_change_int32_atomic(TDB_CONTEXT *tdb, const char *keystr, int32 *oldva if ((val = tdb_fetch_int32(tdb, keystr)) == -1) { /* The lookup failed */ if (tdb_error(tdb) != TDB_ERR_NOEXIST) { - /* but not becouse it didn't exist */ + /* but not because it didn't exist */ goto err_out; } @@ -352,7 +352,7 @@ BOOL tdb_change_uint32_atomic(TDB_CONTEXT *tdb, const char *keystr, uint32 *oldv if (!tdb_fetch_uint32(tdb, keystr, &val)) { /* It failed */ if (tdb_error(tdb) != TDB_ERR_NOEXIST) { - /* and not becouse it didn't exist */ + /* and not because it didn't exist */ goto err_out; } @@ -387,6 +387,7 @@ BOOL tdb_change_uint32_atomic(TDB_CONTEXT *tdb, const char *keystr, uint32 *oldv size_t tdb_pack(char *buf, int bufsize, const char *fmt, ...) { va_list ap; + uint8 bt; uint16 w; uint32 d; int i; @@ -402,44 +403,50 @@ size_t tdb_pack(char *buf, int bufsize, const char *fmt, ...) while (*fmt) { switch ((c = *fmt++)) { - case 'w': + case 'b': /* unsigned 8-bit integer */ + len = 1; + bt = (uint8)va_arg(ap, int); + if (bufsize && bufsize >= len) + SSVAL(buf, 0, bt); + break; + case 'w': /* unsigned 16-bit integer */ len = 2; w = (uint16)va_arg(ap, int); - if (bufsize >= len) + if (bufsize && bufsize >= len) SSVAL(buf, 0, w); break; - case 'd': + case 'd': /* signed 32-bit integer (standard int in most systems) */ len = 4; d = va_arg(ap, uint32); - if (bufsize >= len) + if (bufsize && bufsize >= len) SIVAL(buf, 0, d); break; - case 'p': + case 'p': /* pointer */ len = 4; p = va_arg(ap, void *); d = p?1:0; - if (bufsize >= len) + if (bufsize && bufsize >= len) SIVAL(buf, 0, d); break; - case 'P': + case 'P': /* null-terminated string */ s = va_arg(ap,char *); w = strlen(s); len = w + 1; - if (bufsize >= len) + if (bufsize && bufsize >= len) memcpy(buf, s, len); break; - case 'f': + case 'f': /* null-terminated string */ s = va_arg(ap,char *); w = strlen(s); len = w + 1; - if (bufsize >= len) + if (bufsize && bufsize >= len) memcpy(buf, s, len); break; - case 'B': + case 'B': /* fixed-length string */ i = va_arg(ap, int); s = va_arg(ap, char *); len = 4+i; - if (bufsize >= len) { + if (bufsize && bufsize >= len) { SIVAL(buf, 0, i); memcpy(buf+4, s, i); } @@ -452,7 +459,10 @@ size_t tdb_pack(char *buf, int bufsize, const char *fmt, ...) } buf += len; - bufsize -= len; + if (bufsize) + bufsize -= len; + if (bufsize < 0) + bufsize = 0; } va_end(ap); @@ -471,6 +481,7 @@ size_t tdb_pack(char *buf, int bufsize, const char *fmt, ...) int tdb_unpack(char *buf, int bufsize, const char *fmt, ...) { va_list ap; + uint8 *bt; uint16 *w; uint32 *d; int len; @@ -486,6 +497,13 @@ int tdb_unpack(char *buf, int bufsize, const char *fmt, ...) while (*fmt) { switch ((c=*fmt++)) { + case 'b': + len = 1; + bt = va_arg(ap, uint8 *); + if (bufsize < len) + goto no_space; + *bt = SVAL(buf, 0); + break; case 'w': len = 2; w = va_arg(ap, uint16 *); @@ -563,6 +581,67 @@ int tdb_unpack(char *buf, int bufsize, const char *fmt, ...) return -1; } + +/** + * Pack SID passed by pointer + * + * @param pack_buf pointer to buffer which is to be filled with packed data + * @param bufsize size of packing buffer + * @param sid pointer to sid to be packed + * + * @return length of the packed representation of the whole structure + **/ +size_t tdb_sid_pack(char* pack_buf, int bufsize, DOM_SID* sid) +{ + int idx; + size_t len = 0; + + if (!sid || !pack_buf) return -1; + + len += tdb_pack(pack_buf + len, bufsize - len, "bb", sid->sid_rev_num, + sid->num_auths); + + for (idx = 0; idx < 6; idx++) { + len += tdb_pack(pack_buf + len, bufsize - len, "b", sid->id_auth[idx]); + } + + for (idx = 0; idx < MAXSUBAUTHS; idx++) { + len += tdb_pack(pack_buf + len, bufsize - len, "d", sid->sub_auths[idx]); + } + + return len; +} + + +/** + * Unpack SID into a pointer + * + * @param pack_buf pointer to buffer with packed representation + * @param bufsize size of the buffer + * @param sid pointer to sid structure to be filled with unpacked data + * + * @return size of structure unpacked from buffer + **/ +size_t tdb_sid_unpack(char* pack_buf, int bufsize, DOM_SID* sid) +{ + int idx, len = 0; + + if (!sid || !pack_buf) return -1; + + len += tdb_unpack(pack_buf + len, bufsize - len, "bb", + &sid->sid_rev_num, &sid->num_auths); + + for (idx = 0; idx < 6; idx++) { + len += tdb_unpack(pack_buf + len, bufsize - len, "b", &sid->id_auth[idx]); + } + + for (idx = 0; idx < MAXSUBAUTHS; idx++) { + len += tdb_unpack(pack_buf + len, bufsize - len, "d", &sid->sub_auths[idx]); + } + + return len; +} + /**************************************************************************** Log tdb messages via DEBUG(). ****************************************************************************/ @@ -665,7 +744,7 @@ TDB_LIST_NODE *tdb_search_keys(TDB_CONTEXT *tdb, const char* pattern) return list; -}; +} /** @@ -679,9 +758,8 @@ void tdb_search_list_free(TDB_LIST_NODE* node) while (node) { next_node = node->next; + SAFE_FREE(node->node_key.dptr); SAFE_FREE(node); node = next_node; - }; -}; - - + } +} |