xfs: Add support for the Q_XGETQSTATV

For XFS, add support for Q_XGETQSTATV quotactl command.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Reviewed-by: Rich Johnston <rjohnston@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

3 files changed, 97 insertions, 0 deletions

diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h
index 579d6a02a5b6..670cd4464070 100644
--- a/fs/xfs/xfs_qm.h
+++ b/fs/xfs/xfs_qm.h
@@ -160,6 +160,8 @@ extern int		xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
                                         struct fs_disk_quota *);
 extern int              xfs_qm_scall_getqstat(struct xfs_mount *,
                                         struct fs_quota_stat *);
+extern int              xfs_qm_scall_getqstatv(struct xfs_mount *,
+                                        struct fs_quota_statv *);
 extern int              xfs_qm_scall_quotaon(struct xfs_mount *, uint);
 extern int              xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
 
diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c
index 5290af2411c4..8174aad0b388 100644
--- a/fs/xfs/xfs_qm_syscalls.c
+++ b/fs/xfs/xfs_qm_syscalls.c
@@ -404,6 +404,7 @@ xfs_qm_scall_quotaon(
 
 /*
  * Return quota status information, such as uquota-off, enforcements, etc.
+ * for Q_XGETQSTAT command.
  */
 int
 xfs_qm_scall_getqstat(
@@ -491,6 +492,87 @@ xfs_qm_scall_getqstat(
         return 0;
 }
 
+/*
+ * Return quota status information, such as uquota-off, enforcements, etc.
+ * for Q_XGETQSTATV command, to support separate project quota field.
+ */
+int
+xfs_qm_scall_getqstatv(
+        struct xfs_mount        *mp,
+        struct fs_quota_statv   *out)
+{
+        struct xfs_quotainfo    *q = mp->m_quotainfo;
+        struct xfs_inode        *uip = NULL;
+        struct xfs_inode        *gip = NULL;
+        struct xfs_inode        *pip = NULL;
+        bool                    tempuqip = false;
+        bool                    tempgqip = false;
+        bool                    temppqip = false;
+
+        if (!xfs_sb_version_hasquota(&mp->m_sb)) {
+                out->qs_uquota.qfs_ino = NULLFSINO;
+                out->qs_gquota.qfs_ino = NULLFSINO;
+                out->qs_pquota.qfs_ino = NULLFSINO;
+                return (0);
+        }
+
+        out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
+                                                        (XFS_ALL_QUOTA_ACCT|
+                                                         XFS_ALL_QUOTA_ENFD));
+        out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
+        out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
+        out->qs_pquota.qfs_ino = mp->m_sb.sb_pquotino;
+
+        if (q) {
+                uip = q->qi_uquotaip;
+                gip = q->qi_gquotaip;
+                pip = q->qi_pquotaip;
+        }
+        if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
+                if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
+                                        0, 0, &uip) == 0)
+                        tempuqip = true;
+        }
+        if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
+                if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
+                                        0, 0, &gip) == 0)
+                        tempgqip = true;
+        }
+        if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) {
+                if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
+                                        0, 0, &pip) == 0)
+                        temppqip = true;
+        }
+        if (uip) {
+                out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
+                out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
+                if (tempuqip)
+                        IRELE(uip);
+        }
+
+        if (gip) {
+                out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
+                out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
+                if (tempgqip)
+                        IRELE(gip);
+        }
+        if (pip) {
+                out->qs_pquota.qfs_nblks = pip->i_d.di_nblocks;
+                out->qs_pquota.qfs_nextents = pip->i_d.di_nextents;
+                if (temppqip)
+                        IRELE(pip);
+        }
+        if (q) {
+                out->qs_incoredqs = q->qi_dquots;
+                out->qs_btimelimit = q->qi_btimelimit;
+                out->qs_itimelimit = q->qi_itimelimit;
+                out->qs_rtbtimelimit = q->qi_rtbtimelimit;
+                out->qs_bwarnlimit = q->qi_bwarnlimit;
+                out->qs_iwarnlimit = q->qi_iwarnlimit;
+        }
+        return 0;
+}
+
 #define XFS_DQ_MASK \
         (FS_DQ_LIMIT_MASK | FS_DQ_TIMER_MASK | FS_DQ_WARNS_MASK)
 
diff --git a/fs/xfs/xfs_quotaops.c b/fs/xfs/xfs_quotaops.c
index 446a2fc9825e..1326d81596c2 100644
--- a/fs/xfs/xfs_quotaops.c
+++ b/fs/xfs/xfs_quotaops.c
@@ -56,6 +56,18 @@ xfs_fs_get_xstate(
 }
 
 STATIC int
+xfs_fs_get_xstatev(
+        struct super_block      *sb,
+        struct fs_quota_statv   *fqs)
+{
+        struct xfs_mount        *mp = XFS_M(sb);
+
+        if (!XFS_IS_QUOTA_RUNNING(mp))
+                return -ENOSYS;
+        return -xfs_qm_scall_getqstatv(mp, fqs);
+}
+
+STATIC int
 xfs_fs_set_xstate(
         struct super_block      *sb,
         unsigned int            uflags,
@@ -135,6 +147,7 @@ xfs_fs_set_dqblk(
 }
 
 const struct quotactl_ops xfs_quotactl_operations = {
+        .get_xstatev            = xfs_fs_get_xstatev,
         .get_xstate             = xfs_fs_get_xstate,
         .set_xstate             = xfs_fs_set_xstate,
         .get_dqblk              = xfs_fs_get_dqblk,