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Diffstat (limited to 'fs/quota/quota.c')
-rw-r--r--fs/quota/quota.c99
1 files changed, 60 insertions, 39 deletions
diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index 95388f9b735..b299961e1ed 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -45,36 +45,22 @@ static int check_quotactl_permission(struct super_block *sb, int type, int cmd,
return security_quotactl(cmd, type, id, sb);
}
+static void quota_sync_one(struct super_block *sb, void *arg)
+{
+ if (sb->s_qcop && sb->s_qcop->quota_sync)
+ sb->s_qcop->quota_sync(sb, *(int *)arg, 1);
+}
+
static int quota_sync_all(int type)
{
- struct super_block *sb;
int ret;
if (type >= MAXQUOTAS)
return -EINVAL;
ret = security_quotactl(Q_SYNC, type, 0, NULL);
- if (ret)
- return ret;
-
- spin_lock(&sb_lock);
-restart:
- list_for_each_entry(sb, &super_blocks, s_list) {
- if (!sb->s_qcop || !sb->s_qcop->quota_sync)
- continue;
-
- sb->s_count++;
- spin_unlock(&sb_lock);
- down_read(&sb->s_umount);
- if (sb->s_root)
- sb->s_qcop->quota_sync(sb, type, 1);
- up_read(&sb->s_umount);
- spin_lock(&sb_lock);
- if (__put_super_and_need_restart(sb))
- goto restart;
- }
- spin_unlock(&sb_lock);
-
- return 0;
+ if (!ret)
+ iterate_supers(quota_sync_one, &type);
+ return ret;
}
static int quota_quotaon(struct super_block *sb, int type, int cmd, qid_t id,
@@ -87,7 +73,7 @@ static int quota_quotaon(struct super_block *sb, int type, int cmd, qid_t id,
if (IS_ERR(pathname))
return PTR_ERR(pathname);
if (sb->s_qcop->quota_on)
- ret = sb->s_qcop->quota_on(sb, type, id, pathname, 0);
+ ret = sb->s_qcop->quota_on(sb, type, id, pathname);
putname(pathname);
return ret;
}
@@ -113,8 +99,6 @@ static int quota_getinfo(struct super_block *sb, int type, void __user *addr)
struct if_dqinfo info;
int ret;
- if (!sb_has_quota_active(sb, type))
- return -ESRCH;
if (!sb->s_qcop->get_info)
return -ENOSYS;
ret = sb->s_qcop->get_info(sb, type, &info);
@@ -129,43 +113,80 @@ static int quota_setinfo(struct super_block *sb, int type, void __user *addr)
if (copy_from_user(&info, addr, sizeof(info)))
return -EFAULT;
- if (!sb_has_quota_active(sb, type))
- return -ESRCH;
if (!sb->s_qcop->set_info)
return -ENOSYS;
return sb->s_qcop->set_info(sb, type, &info);
}
+static void copy_to_if_dqblk(struct if_dqblk *dst, struct fs_disk_quota *src)
+{
+ dst->dqb_bhardlimit = src->d_blk_hardlimit;
+ dst->dqb_bsoftlimit = src->d_blk_softlimit;
+ dst->dqb_curspace = src->d_bcount;
+ dst->dqb_ihardlimit = src->d_ino_hardlimit;
+ dst->dqb_isoftlimit = src->d_ino_softlimit;
+ dst->dqb_curinodes = src->d_icount;
+ dst->dqb_btime = src->d_btimer;
+ dst->dqb_itime = src->d_itimer;
+ dst->dqb_valid = QIF_ALL;
+}
+
static int quota_getquota(struct super_block *sb, int type, qid_t id,
void __user *addr)
{
+ struct fs_disk_quota fdq;
struct if_dqblk idq;
int ret;
- if (!sb_has_quota_active(sb, type))
- return -ESRCH;
if (!sb->s_qcop->get_dqblk)
return -ENOSYS;
- ret = sb->s_qcop->get_dqblk(sb, type, id, &idq);
+ ret = sb->s_qcop->get_dqblk(sb, type, id, &fdq);
if (ret)
return ret;
+ copy_to_if_dqblk(&idq, &fdq);
if (copy_to_user(addr, &idq, sizeof(idq)))
return -EFAULT;
return 0;
}
+static void copy_from_if_dqblk(struct fs_disk_quota *dst, struct if_dqblk *src)
+{
+ dst->d_blk_hardlimit = src->dqb_bhardlimit;
+ dst->d_blk_softlimit = src->dqb_bsoftlimit;
+ dst->d_bcount = src->dqb_curspace;
+ dst->d_ino_hardlimit = src->dqb_ihardlimit;
+ dst->d_ino_softlimit = src->dqb_isoftlimit;
+ dst->d_icount = src->dqb_curinodes;
+ dst->d_btimer = src->dqb_btime;
+ dst->d_itimer = src->dqb_itime;
+
+ dst->d_fieldmask = 0;
+ if (src->dqb_valid & QIF_BLIMITS)
+ dst->d_fieldmask |= FS_DQ_BSOFT | FS_DQ_BHARD;
+ if (src->dqb_valid & QIF_SPACE)
+ dst->d_fieldmask |= FS_DQ_BCOUNT;
+ if (src->dqb_valid & QIF_ILIMITS)
+ dst->d_fieldmask |= FS_DQ_ISOFT | FS_DQ_IHARD;
+ if (src->dqb_valid & QIF_INODES)
+ dst->d_fieldmask |= FS_DQ_ICOUNT;
+ if (src->dqb_valid & QIF_BTIME)
+ dst->d_fieldmask |= FS_DQ_BTIMER;
+ if (src->dqb_valid & QIF_ITIME)
+ dst->d_fieldmask |= FS_DQ_ITIMER;
+}
+
static int quota_setquota(struct super_block *sb, int type, qid_t id,
void __user *addr)
{
+ struct fs_disk_quota fdq;
struct if_dqblk idq;
if (copy_from_user(&idq, addr, sizeof(idq)))
return -EFAULT;
- if (!sb_has_quota_active(sb, type))
- return -ESRCH;
if (!sb->s_qcop->set_dqblk)
return -ENOSYS;
- return sb->s_qcop->set_dqblk(sb, type, id, &idq);
+ copy_from_if_dqblk(&fdq, &idq);
+ return sb->s_qcop->set_dqblk(sb, type, id, &fdq);
}
static int quota_setxstate(struct super_block *sb, int cmd, void __user *addr)
@@ -199,9 +220,9 @@ static int quota_setxquota(struct super_block *sb, int type, qid_t id,
if (copy_from_user(&fdq, addr, sizeof(fdq)))
return -EFAULT;
- if (!sb->s_qcop->set_xquota)
+ if (!sb->s_qcop->set_dqblk)
return -ENOSYS;
- return sb->s_qcop->set_xquota(sb, type, id, &fdq);
+ return sb->s_qcop->set_dqblk(sb, type, id, &fdq);
}
static int quota_getxquota(struct super_block *sb, int type, qid_t id,
@@ -210,9 +231,9 @@ static int quota_getxquota(struct super_block *sb, int type, qid_t id,
struct fs_disk_quota fdq;
int ret;
- if (!sb->s_qcop->get_xquota)
+ if (!sb->s_qcop->get_dqblk)
return -ENOSYS;
- ret = sb->s_qcop->get_xquota(sb, type, id, &fdq);
+ ret = sb->s_qcop->get_dqblk(sb, type, id, &fdq);
if (!ret && copy_to_user(addr, &fdq, sizeof(fdq)))
return -EFAULT;
return ret;
@@ -239,7 +260,7 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id,
case Q_QUOTAOFF:
if (!sb->s_qcop->quota_off)
return -ENOSYS;
- return sb->s_qcop->quota_off(sb, type, 0);
+ return sb->s_qcop->quota_off(sb, type);
case Q_GETFMT:
return quota_getfmt(sb, type, addr);
case Q_GETINFO:
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-21 14:36:37 +0000