/*
* util_poolset_open -- (internal) open memory pool set
*
* On success returns 0 and a pointer to a newly allocated structure
* containing the info of all the parts of the pool set and replicas.
*/
static int
util_poolset_open(struct pool_set **setp, const char *path, size_t minsize)
{
LOG(3, "setp %p path %s minsize %zu", setp, path, minsize);
int oerrno;
int ret = 0;
int fd;
size_t size = 0;
/* do not check minsize */
if ((fd = util_file_open(path, &size, 0, O_RDWR)) == -1)
return -1;
char signature[POOLSET_HDR_SIG_LEN];
ret = read(fd, signature, POOLSET_HDR_SIG_LEN);
if (ret < 0) {
ERR("!read %d", fd);
goto err;
}
if (ret < POOLSET_HDR_SIG_LEN ||
strncmp(signature, POOLSET_HDR_SIG, POOLSET_HDR_SIG_LEN)) {
LOG(4, "not a pool set header");
if (size < minsize) {
ERR("size %zu smaller than %zu", size, minsize);
errno = EINVAL;
ret = -1;
goto err;
}
*setp = util_poolset_single(path, size, fd, 0);
if (*setp == NULL) {
ret = -1;
goto err;
}
/* do not close the file */
return 0;
}
ret = util_poolset_parse(path, fd, setp);
if (ret != 0)
goto err;
ret = util_poolset_files(*setp, minsize, 0);
if (ret != 0)
util_poolset_close(*setp, 0);
err:
oerrno = errno;
(void) close(fd);
errno = oerrno;
return ret;
}
/*
* util_poolset_open -- (internal) open memory pool set
*
* On success returns 0 and a pointer to a newly allocated structure
* containing the info of all the parts of the pool set and replicas.
*/
static int
util_poolset_open(struct pool_set **setp, const char *path, size_t minsize)
{
LOG(3, "setp %p path %s minsize %zu", setp, path, minsize);
int oerrno;
int ret = 0;
int fd;
size_t size = 0;
/* do not check minsize */
if ((fd = util_file_open(path, &size, 0, O_RDONLY)) == -1)
return -1;
char signature[POOLSET_HDR_SIG_LEN];
/*
* read returns ssize_t, but we know it will return value between -1
* and POOLSET_HDR_SIG_LEN (11), so we can safely cast it to int
*/
ret = (int)read(fd, signature, POOLSET_HDR_SIG_LEN);
if (ret < 0) {
ERR("!read %d", fd);
goto err;
}
if (ret < POOLSET_HDR_SIG_LEN ||
strncmp(signature, POOLSET_HDR_SIG, POOLSET_HDR_SIG_LEN)) {
LOG(4, "not a pool set header");
if (size < minsize) {
ERR("size %zu smaller than %zu", size, minsize);
errno = EINVAL;
ret = -1;
goto err;
}
/* close the file and open with O_RDWR */
(void) close(fd);
size = 0;
if ((fd = util_file_open(path, &size, 0, O_RDWR)) == -1)
return -1;
*setp = util_poolset_single(path, size, fd, 0);
if (*setp == NULL) {
ret = -1;
goto err;
}
/* do not close the file */
return 0;
}
ret = util_poolset_parse(path, fd, setp);
if (ret != 0)
goto err;
ret = util_poolset_files(*setp, minsize, 0);
if (ret != 0)
util_poolset_close(*setp, 0);
err:
oerrno = errno;
(void) close(fd);
errno = oerrno;
return ret;
}
