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merged tdb from ctdb bzr tree

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This commit is contained in:
Andrew Tridgell
2008-01-15 14:05:47 +11:00
parent 84dc6bc19c
commit ed0c3a0f74
9 changed files with 484 additions and 223 deletions
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11
source/lib/tdb/common/open.c
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@@ -35,7 +35,7 @@ static struct tdb_context *tdbs = NULL;
static unsigned int default_tdb_hash(TDB_DATA *key)
{
uint32_t value; /* Used to compute the hash value. */
uint32_t i; /* Used to cycle through random values. */
uint32_t i; /* Used to cycle through random values. */
/* Set the initial value from the key size. */
for (value = 0x238F13AF * key->dsize, i=0; i < key->dsize; i++)
@@ -90,7 +90,7 @@ static int tdb_new_database(struct tdb_context *tdb, int hash_size)
size -= written;
written = write(tdb->fd, newdb+written, size);
if (written == size) {
ret = 0;
ret = 0;
} else if (written >= 0) {
/* a second incomplete write - we give up.
* guessing the errno... */
@@ -152,6 +152,7 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,
int rev = 0, locked = 0;
unsigned char *vp;
uint32_t vertest;
unsigned v;
if (!(tdb = (struct tdb_context *)calloc(1, sizeof *tdb))) {
/* Can't log this */
@@ -215,6 +216,10 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,
goto fail; /* errno set by open(2) */
}
/* on exec, don't inherit the fd */
v = fcntl(tdb->fd, F_GETFD, 0);
fcntl(tdb->fd, F_SETFD, v | FD_CLOEXEC);
/* ensure there is only one process initialising at once */
if (tdb->methods->tdb_brlock(tdb, GLOBAL_LOCK, F_WRLCK, F_SETLKW, 0, 1) == -1) {
TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_open_ex: failed to get global lock on %s: %s\n",
@@ -242,7 +247,7 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,
/* its not a valid database - possibly initialise it */
if (!(open_flags & O_CREAT) || tdb_new_database(tdb, hash_size) == -1) {
if (errno == 0) {
errno = EIO; /* ie bad format or something */
errno = EIO; /* ie bad format or something */
}
goto fail;
}