*/
#include "includes.h"
+#include "system/filesys.h"
+#include "util_tdb.h"
+
#undef malloc
#undef realloc
#undef calloc
/* these are little tdb utility functions that are meant to make
dealing with a tdb database a little less cumbersome in Samba */
-static SIG_ATOMIC_T gotalarm;
-
-/***************************************************************
- Signal function to tell us we timed out.
-****************************************************************/
-
-static void gotalarm_sig(void)
-{
- gotalarm = 1;
-}
-
-/****************************************************************************
- Lock a chain with timeout (in seconds).
-****************************************************************************/
-
-static int tdb_chainlock_with_timeout_internal( TDB_CONTEXT *tdb, TDB_DATA key, unsigned int timeout, int rw_type)
-{
- /* Allow tdb_chainlock to be interrupted by an alarm. */
- int ret;
- gotalarm = 0;
-
- if (timeout) {
- CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
- tdb_setalarm_sigptr(tdb, &gotalarm);
- alarm(timeout);
- }
-
- if (rw_type == F_RDLCK)
- ret = tdb_chainlock_read(tdb, key);
- else
- ret = tdb_chainlock(tdb, key);
-
- if (timeout) {
- alarm(0);
- tdb_setalarm_sigptr(tdb, NULL);
- CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
- if (gotalarm && (ret == -1)) {
- DEBUG(0,("tdb_chainlock_with_timeout_internal: alarm (%u) timed out for key %s in tdb %s\n",
- timeout, key.dptr, tdb_name(tdb)));
- /* TODO: If we time out waiting for a lock, it might
- * be nice to use F_GETLK to get the pid of the
- * process currently holding the lock and print that
- * as part of the debugging message. -- mbp */
- return -1;
- }
- }
-
- return ret;
-}
-
-/****************************************************************************
- Write lock a chain. Return -1 if timeout or lock failed.
-****************************************************************************/
-
-int tdb_chainlock_with_timeout( TDB_CONTEXT *tdb, TDB_DATA key, unsigned int timeout)
-{
- return tdb_chainlock_with_timeout_internal(tdb, key, timeout, F_WRLCK);
-}
-
-int tdb_lock_bystring_with_timeout(TDB_CONTEXT *tdb, const char *keyval,
- int timeout)
-{
- TDB_DATA key = string_term_tdb_data(keyval);
-
- return tdb_chainlock_with_timeout(tdb, key, timeout);
-}
-
-/****************************************************************************
- Read lock a chain by string. Return -1 if timeout or lock failed.
-****************************************************************************/
-
-int tdb_read_lock_bystring_with_timeout(TDB_CONTEXT *tdb, const char *keyval, unsigned int timeout)
-{
- TDB_DATA key = string_term_tdb_data(keyval);
-
- return tdb_chainlock_with_timeout_internal(tdb, key, timeout, F_RDLCK);
-}
-
-
-
-
int tdb_trans_store_bystring(TDB_CONTEXT *tdb, const char *keystr,
TDB_DATA data, int flags)
{
va_end(ap);
if (mem_ctx != NULL) {
- *buf = TALLOC_REALLOC_ARRAY(mem_ctx, *buf, uint8,
+ *buf = talloc_realloc(mem_ctx, *buf, uint8,
(*len) + len1);
} else {
*buf = SMB_REALLOC_ARRAY(*buf, uint8, (*len) + len1);
goto no_space;
*w = SVAL(buf, 0);
break;
- case 'd': /* signed 32-bit integer (standard int in most systems) */
+ case 'd': /* unsigned 32-bit integer (standard int in most systems) */
len = 4;
d = va_arg(ap, uint32 *);
if (bufsize < len)
case 'P': /* null-terminated string */
/* Return malloc'ed string. */
ps = va_arg(ap,char **);
- len = strlen((const char *)buf) + 1;
+ len = strnlen((const char *)buf, bufsize) + 1;
+ if (bufsize < len)
+ goto no_space;
*ps = SMB_STRDUP((const char *)buf);
break;
case 'f': /* null-terminated string */
s = va_arg(ap,char *);
- len = strlen((const char *)buf) + 1;
+ len = strnlen((const char *)buf, bufsize) + 1;
if (bufsize < len || len > sizeof(fstring))
goto no_space;
memcpy(s, buf, len);
int open_flags, mode_t mode)
{
TDB_CONTEXT *tdb;
- struct tdb_logging_context log_ctx;
if (!lp_use_mmap())
tdb_flags |= TDB_NOMMAP;
- log_ctx.log_fn = tdb_log;
- log_ctx.log_private = NULL;
-
if ((hash_size == 0) && (name != NULL)) {
const char *base = strrchr_m(name, '/');
if (base != NULL) {
hash_size = lp_parm_int(-1, "tdb_hashsize", base, 0);
}
- tdb = tdb_open_ex(name, hash_size, tdb_flags,
- open_flags, mode, &log_ctx, NULL);
+ tdb = tdb_open_compat(name, hash_size, tdb_flags,
+ open_flags, mode, tdb_log, NULL);
if (!tdb)
return NULL;
if ((res = tdb_store(tdb, key, dbuf, flag)) != 0) {
DEBUG(10, ("tdb_store failed\n"));
- if (tdb_transaction_cancel(tdb) != 0) {
- smb_panic("Cancelling transaction failed");
- }
+ tdb_transaction_cancel(tdb);
return res;
}
if ((res = tdb_delete(tdb, key)) != 0) {
DEBUG(10, ("tdb_delete failed\n"));
- if (tdb_transaction_cancel(tdb) != 0) {
- smb_panic("Cancelling transaction failed");
- }
+ tdb_transaction_cancel(tdb);
return res;
}
return res;
}
-/*
- Log tdb messages via DEBUG().
-*/
-static void tdb_wrap_log(TDB_CONTEXT *tdb, enum tdb_debug_level level,
- const char *format, ...) PRINTF_ATTRIBUTE(3,4);
-
-static void tdb_wrap_log(TDB_CONTEXT *tdb, enum tdb_debug_level level,
- const char *format, ...)
-{
- va_list ap;
- char *ptr = NULL;
- int debuglevel = 0;
- int ret;
-
- switch (level) {
- case TDB_DEBUG_FATAL:
- debuglevel = 0;
- break;
- case TDB_DEBUG_ERROR:
- debuglevel = 1;
- break;
- case TDB_DEBUG_WARNING:
- debuglevel = 2;
- break;
- case TDB_DEBUG_TRACE:
- debuglevel = 5;
- break;
- default:
- debuglevel = 0;
- }
-
- va_start(ap, format);
- ret = vasprintf(&ptr, format, ap);
- va_end(ap);
-
- if (ret != -1) {
- const char *name = tdb_name(tdb);
- DEBUG(debuglevel, ("tdb(%s): %s", name ? name : "unnamed", ptr));
- free(ptr);
- }
-}
-
-static struct tdb_wrap *tdb_list;
-
-/* destroy the last connection to a tdb */
-static int tdb_wrap_destructor(struct tdb_wrap *w)
-{
- tdb_close(w->tdb);
- DLIST_REMOVE(tdb_list, w);
- return 0;
-}
-
-/*
- wrapped connection to a tdb database
- to close just talloc_free() the tdb_wrap pointer
- */
-struct tdb_wrap *tdb_wrap_open(TALLOC_CTX *mem_ctx,
- const char *name, int hash_size, int tdb_flags,
- int open_flags, mode_t mode)
-{
- struct tdb_wrap *w;
- struct tdb_logging_context log_ctx;
- log_ctx.log_fn = tdb_wrap_log;
-
- if (!lp_use_mmap())
- tdb_flags |= TDB_NOMMAP;
-
- for (w=tdb_list;w;w=w->next) {
- if (strcmp(name, w->name) == 0) {
- /*
- * Yes, talloc_reference is exactly what we want
- * here. Otherwise we would have to implement our own
- * reference counting.
- */
- return talloc_reference(mem_ctx, w);
- }
- }
-
- w = talloc(mem_ctx, struct tdb_wrap);
- if (w == NULL) {
- return NULL;
- }
-
- if (!(w->name = talloc_strdup(w, name))) {
- talloc_free(w);
- return NULL;
- }
-
- if ((hash_size == 0) && (name != NULL)) {
- const char *base = strrchr_m(name, '/');
- if (base != NULL) {
- base += 1;
- }
- else {
- base = name;
- }
- hash_size = lp_parm_int(-1, "tdb_hashsize", base, 0);
- }
-
- w->tdb = tdb_open_ex(name, hash_size, tdb_flags,
- open_flags, mode, &log_ctx, NULL);
- if (w->tdb == NULL) {
- talloc_free(w);
- return NULL;
- }
-
- talloc_set_destructor(w, tdb_wrap_destructor);
-
- DLIST_ADD(tdb_list, w);
-
- return w;
-}
-
-NTSTATUS map_nt_error_from_tdb(enum TDB_ERROR err)
-{
- struct { enum TDB_ERROR err; NTSTATUS status; } map[] =
- { { TDB_SUCCESS, NT_STATUS_OK },
- { TDB_ERR_CORRUPT, NT_STATUS_INTERNAL_DB_CORRUPTION },
- { TDB_ERR_IO, NT_STATUS_UNEXPECTED_IO_ERROR },
- { TDB_ERR_OOM, NT_STATUS_NO_MEMORY },
- { TDB_ERR_EXISTS, NT_STATUS_OBJECT_NAME_COLLISION },
-
- /*
- * TDB_ERR_LOCK is very broad, we could for example
- * distinguish between fcntl locks and invalid lock
- * sequences. So NT_STATUS_FILE_LOCK_CONFLICT is a
- * compromise.
- */
- { TDB_ERR_LOCK, NT_STATUS_FILE_LOCK_CONFLICT },
- /*
- * The next two ones in the enum are not actually used
- */
- { TDB_ERR_NOLOCK, NT_STATUS_FILE_LOCK_CONFLICT },
- { TDB_ERR_LOCK_TIMEOUT, NT_STATUS_FILE_LOCK_CONFLICT },
- { TDB_ERR_NOEXIST, NT_STATUS_NOT_FOUND },
- { TDB_ERR_EINVAL, NT_STATUS_INVALID_PARAMETER },
- { TDB_ERR_RDONLY, NT_STATUS_ACCESS_DENIED }
- };
-
- int i;
-
- for (i=0; i < sizeof(map) / sizeof(map[0]); i++) {
- if (err == map[i].err) {
- return map[i].status;
- }
- }
-
- return NT_STATUS_INTERNAL_ERROR;
-}
-
int tdb_data_cmp(TDB_DATA t1, TDB_DATA t2)
{
int ret;
git.samba.org / ddiss / samba.git / blobdiff