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quota: Pass information that quota is stored in system file to userspace

Quota tools need to know whether quota is stored in a system file or in
classical aquota.{user|group} files. So pass this information as a flag
in GETINFO quotactl.

Signed-off-by: Jan Kara <jack@suse.cz>
master
Jan Kara 10 years ago
parent
commit
46fe44ce87
  1. 8
      fs/quota/dquot.c
  2. 6
      include/linux/quota.h

8
fs/quota/dquot.c

@ -2125,6 +2125,8 @@ static int vfs_load_quota_inode(struct inode *inode, int type, int format_id,
mutex_unlock(&dqopt->dqio_mutex);
goto out_file_init;
}
if (dqopt->flags & DQUOT_QUOTA_SYS_FILE)
dqopt->info[type].dqi_flags |= DQF_SYS_FILE;
mutex_unlock(&dqopt->dqio_mutex);
spin_lock(&dq_state_lock);
dqopt->flags |= dquot_state_flag(flags, type);
@ -2464,7 +2466,7 @@ int dquot_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
spin_lock(&dq_data_lock);
ii->dqi_bgrace = mi->dqi_bgrace;
ii->dqi_igrace = mi->dqi_igrace;
ii->dqi_flags = mi->dqi_flags & DQF_MASK;
ii->dqi_flags = mi->dqi_flags & DQF_GETINFO_MASK;
ii->dqi_valid = IIF_ALL;
spin_unlock(&dq_data_lock);
mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
@ -2490,8 +2492,8 @@ int dquot_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
if (ii->dqi_valid & IIF_IGRACE)
mi->dqi_igrace = ii->dqi_igrace;
if (ii->dqi_valid & IIF_FLAGS)
mi->dqi_flags = (mi->dqi_flags & ~DQF_MASK) |
(ii->dqi_flags & DQF_MASK);
mi->dqi_flags = (mi->dqi_flags & ~DQF_SETINFO_MASK) |
(ii->dqi_flags & DQF_SETINFO_MASK);
spin_unlock(&dq_data_lock);
mark_info_dirty(sb, type);
/* Force write to disk */

6
include/linux/quota.h

@ -230,7 +230,11 @@ struct mem_dqinfo {
struct super_block;
#define DQF_MASK 0xffff /* Mask for format specific flags */
#define DQF_INFO_DIRTY_B 16
#define DQF_GETINFO_MASK 0x1ffff /* Mask for flags passed to userspace */
#define DQF_SETINFO_MASK 0xffff /* Mask for flags modifiable from userspace */
#define DQF_SYS_FILE_B 16
#define DQF_SYS_FILE (1 << DQF_SYS_FILE_B) /* Quota file stored as system file */
#define DQF_INFO_DIRTY_B 31
#define DQF_INFO_DIRTY (1 << DQF_INFO_DIRTY_B) /* Is info dirty? */
extern void mark_info_dirty(struct super_block *sb, int type);

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