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/*
* Implementation of handling of quotafiles which are hidden
*
* Jan Kara <jack@suse.cz>
*/
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include "pot.h"
#include "common.h"
#include "quotasys.h"
#include "quotaio_generic.h"
static int meta_init_io(struct quota_handle *h)
{
if (!QIO_ENABLED(h)) {
errstr(_("Metadata init_io called when kernel support is not enabled.\n"));
return -1;
}
if (kernel_iface != IFACE_GENERIC) {
errstr(_("Metadata init_io called when kernel does not support generic quota interface!\n"));
return -1;
}
return vfs_get_info(h);
}
static int meta_write_info(struct quota_handle *h)
{
return vfs_set_info(h, IIF_BGRACE | IIF_IGRACE);
}
static struct dquot *meta_read_dquot(struct quota_handle *h, qid_t id)
{
struct dquot *dquot = get_empty_dquot();
dquot->dq_id = id;
dquot->dq_h = h;
memset(&dquot->dq_dqb, 0, sizeof(struct util_dqblk));
if (vfs_get_dquot(dquot) < 0) {
free(dquot);
return NULL;
}
return dquot;
}
static int meta_commit_dquot(struct dquot *dquot, int flags)
{
return vfs_set_dquot(dquot, flags);
}
static int meta_scan_dquots(struct quota_handle *h, int (*process_dquot)(struct dquot *dquot, char *dqname))
{
struct if_nextdqblk kdqblk;
int ret;
ret = quotactl(QCMD(Q_GETNEXTQUOTA, h->qh_type), h->qh_quotadev, 0,
(void *)&kdqblk);
/*
* Fall back to scanning using passwd if Q_GETNEXTQUOTA is not
* supported
*/
if (ret < 0 && (errno == ENOSYS || errno == EINVAL))
return generic_scan_dquots(h, process_dquot, vfs_get_dquot);
return vfs_scan_dquots(h, process_dquot);
}
struct quotafile_ops quotafile_ops_meta = {
init_io: meta_init_io,
write_info: meta_write_info,
read_dquot: meta_read_dquot,
commit_dquot: meta_commit_dquot,
scan_dquots: meta_scan_dquots,
};
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