int default_create_and_write(uint64_t oid, struct siocb *iocb)
{
char path[PATH_MAX], tmp_path[PATH_MAX];
int flags = get_open_flags(oid, true);
int ret, fd;
uint32_t len = iocb->length;
get_obj_path(oid, path);
get_tmp_obj_path(oid, tmp_path);
fd = open(tmp_path, flags, def_fmode);
if (fd < 0) {
if (errno == EEXIST)
/* This happens if node membership changes during object
* creation; while gateway retries a CREATE request,
* recovery process could also recover the object at the
* same time. They should try to write the same date,
* so it is okay to simply return success here. */
dprintf("%s exists\n", tmp_path);
return SD_RES_SUCCESS;
eprintf("failed to open %s: %m\n", tmp_path);
return err_to_sderr(oid, errno);
}
if (iocb->offset != 0 || iocb->length != get_objsize(oid)) {
ret = prealloc(fd, get_objsize(oid));
if (ret != SD_RES_SUCCESS)
goto out;
}
ret = xpwrite(fd, iocb->buf, len, iocb->offset);
if (ret != len) {
eprintf("failed to write object. %m\n");
ret = err_to_sderr(oid, errno);
goto out;
}
ret = rename(tmp_path, path);
if (ret < 0) {
eprintf("failed to rename %s to %s: %m\n", tmp_path, path);
ret = err_to_sderr(oid, errno);
goto out;
}
dprintf("%"PRIx64"\n", oid);
ret = SD_RES_SUCCESS;
out:
if (ret != SD_RES_SUCCESS)
unlink(tmp_path);
close(fd);
return ret;
}
int default_create_and_write(uint64_t oid, const struct siocb *iocb)
{
char path[PATH_MAX], tmp_path[PATH_MAX];
int flags = prepare_iocb(oid, iocb, true);
int ret, fd;
uint32_t len = iocb->length;
bool ec = is_erasure_obj(oid, iocb->copy_policy);
size_t obj_size;
sd_debug("%"PRIx64, oid);
get_obj_path(oid, path, sizeof(path));
get_tmp_obj_path(oid, tmp_path, sizeof(tmp_path));
if (uatomic_is_true(&sys->use_journal) &&
journal_write_store(oid, iocb->buf, iocb->length,
iocb->offset, true)
!= SD_RES_SUCCESS) {
sd_err("turn off journaling");
uatomic_set_false(&sys->use_journal);
flags |= O_DSYNC;
sync();
}
fd = open(tmp_path, flags, sd_def_fmode);
if (fd < 0) {
if (errno == EEXIST) {
/*
* This happens if node membership changes during object
* creation; while gateway retries a CREATE request,
* recovery process could also recover the object at the
* same time. They should try to write the same date,
* so it is okay to simply return success here.
*/
sd_debug("%s exists", tmp_path);
return SD_RES_SUCCESS;
}
sd_err("failed to open %s: %m", tmp_path);
return err_to_sderr(path, oid, errno);
}
if (ec) {
uint8_t policy = iocb->copy_policy ?:
get_vdi_copy_policy(oid_to_vid(oid));
int d;
ec_policy_to_dp(policy, &d, NULL);
obj_size = SD_DATA_OBJ_SIZE / d;
} else
/* If cleanup is true, temporary objects will be removed */
int for_each_object_in_wd(int (*func)(uint64_t oid, void *arg), bool cleanup,
void *arg)
{
DIR *dir;
struct dirent *d;
uint64_t oid;
int ret = SD_RES_SUCCESS;
char path[PATH_MAX];
dir = opendir(obj_path);
if (!dir) {
eprintf("failed to open %s, %m\n", obj_path);
return SD_RES_EIO;
}
while ((d = readdir(dir))) {
if (!strncmp(d->d_name, ".", 1))
continue;
oid = strtoull(d->d_name, NULL, 16);
if (oid == 0 || oid == ULLONG_MAX)
continue;
/* don't call callback against temporary objects */
if (strlen(d->d_name) == 20 &&
strcmp(d->d_name + 16, ".tmp") == 0) {
if (cleanup) {
get_tmp_obj_path(oid, path);
dprintf("remove tmp object %s\n", path);
unlink(path);
}
continue;
}
ret = func(oid, arg);
if (ret != SD_RES_SUCCESS)
break;
}
closedir(dir);
return ret;
}
int default_create_and_write(uint64_t oid, const struct siocb *iocb)
{
char path[PATH_MAX], tmp_path[PATH_MAX];
int flags = prepare_iocb(oid, iocb, true);
int ret, fd;
uint32_t len = iocb->length;
get_obj_path(oid, path);
get_tmp_obj_path(oid, tmp_path);
if (uatomic_is_true(&sys->use_journal) &&
journal_write_store(oid, iocb->buf, iocb->length,
iocb->offset, true)
!= SD_RES_SUCCESS) {
sd_err("turn off journaling");
uatomic_set_false(&sys->use_journal);
flags |= O_DSYNC;
sync();
}
fd = open(tmp_path, flags, sd_def_fmode);
if (fd < 0) {
if (errno == EEXIST) {
/*
* This happens if node membership changes during object
* creation; while gateway retries a CREATE request,
* recovery process could also recover the object at the
* same time. They should try to write the same date,
* so it is okay to simply return success here.
*/
sd_debug("%s exists", tmp_path);
return SD_RES_SUCCESS;
}
sd_err("failed to open %s: %m", tmp_path);
return err_to_sderr(path, oid, errno);
}
if (iocb->offset != 0 || iocb->length != get_objsize(oid)) {
ret = prealloc(fd, get_objsize(oid));
if (ret < 0) {
ret = err_to_sderr(path, oid, errno);
goto out;
}
}
ret = xpwrite(fd, iocb->buf, len, iocb->offset);
if (ret != len) {
sd_err("failed to write object. %m");
ret = err_to_sderr(path, oid, errno);
goto out;
}
ret = rename(tmp_path, path);
if (ret < 0) {
sd_err("failed to rename %s to %s: %m", tmp_path, path);
ret = err_to_sderr(path, oid, errno);
goto out;
}
sd_debug("%"PRIx64, oid);
ret = SD_RES_SUCCESS;
out:
if (ret != SD_RES_SUCCESS)
unlink(tmp_path);
close(fd);
return ret;
}
