xfs: reshuffle dir2 definitions around for userspace

[mirror_ubuntu-artful-kernel.git] / fs / xfs / xfs_symlink.c

diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c
index 195a403e1522bbed00cb0f843b1d53c885db0e0d..dd7c0991fdb9e456eda5c1e7eb67cff4c11e3642 100644 (file)
--- a/fs/xfs/xfs_symlink.c
+++ b/fs/xfs/xfs_symlink.c
@@ -18,15 +18,16 @@
  */
 #include "xfs.h"
 #include "xfs_fs.h"
-#include "xfs_types.h"
+#include "xfs_format.h"
 #include "xfs_bit.h"
 #include "xfs_log.h"
 #include "xfs_trans.h"
 #include "xfs_sb.h"
 #include "xfs_ag.h"
-#include "xfs_dir2.h"
 #include "xfs_mount.h"
 #include "xfs_da_btree.h"
+#include "xfs_dir2_format.h"
+#include "xfs_dir2.h"
 #include "xfs_bmap_btree.h"
 #include "xfs_ialloc_btree.h"
 #include "xfs_dinode.h"
@@ -358,7 +359,9 @@ xfs_symlink(
        int                     n;
        xfs_buf_t               *bp;
        prid_t                  prid;
-       struct xfs_dquot        *udqp, *gdqp;
+       struct xfs_dquot        *udqp = NULL;
+       struct xfs_dquot        *gdqp = NULL;
+       struct xfs_dquot        *pdqp = NULL;
        uint                    resblks;
 
        *ipp = NULL;
@@ -385,7 +388,7 @@ xfs_symlink(
         * Make sure that we have allocated dquot(s) on disk.
         */
        error = xfs_qm_vop_dqalloc(dp, current_fsuid(), current_fsgid(), prid,
-                       XFS_QMOPT_QUOTALL | XFS_QMOPT_INHERIT, &udqp, &gdqp);
+               XFS_QMOPT_QUOTALL | XFS_QMOPT_INHERIT, &udqp, &gdqp, &pdqp);
        if (error)
                goto std_return;
 
@@ -426,7 +429,8 @@ xfs_symlink(
        /*
         * Reserve disk quota : blocks and inode.
         */
-       error = xfs_trans_reserve_quota(tp, mp, udqp, gdqp, resblks, 1, 0);
+       error = xfs_trans_reserve_quota(tp, mp, udqp, gdqp,
+                                               pdqp, resblks, 1, 0);
        if (error)
                goto error_return;
 
@@ -464,7 +468,7 @@ xfs_symlink(
        /*
         * Also attach the dquot(s) to it, if applicable.
         */
-       xfs_qm_vop_create_dqattach(tp, ip, udqp, gdqp);
+       xfs_qm_vop_create_dqattach(tp, ip, udqp, gdqp, pdqp);
 
        if (resblks)
                resblks -= XFS_IALLOC_SPACE_RES(mp);
@@ -562,6 +566,7 @@ xfs_symlink(
        error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
        xfs_qm_dqrele(udqp);
        xfs_qm_dqrele(gdqp);
+       xfs_qm_dqrele(pdqp);
 
        *ipp = ip;
        return 0;
@@ -575,6 +580,7 @@ xfs_symlink(
        xfs_trans_cancel(tp, cancel_flags);
        xfs_qm_dqrele(udqp);
        xfs_qm_dqrele(gdqp);
+       xfs_qm_dqrele(pdqp);
 
        if (unlock_dp_on_error)
                xfs_iunlock(dp, XFS_ILOCK_EXCL);
@@ -585,7 +591,7 @@ xfs_symlink(
 /*
  * Free a symlink that has blocks associated with it.
  */
-int
+STATIC int
 xfs_inactive_symlink_rmt(
        xfs_inode_t     *ip,
        xfs_trans_t     **tpp)
@@ -606,7 +612,7 @@ xfs_inactive_symlink_rmt(
 
        tp = *tpp;
        mp = ip->i_mount;
-       ASSERT(ip->i_d.di_size > XFS_IFORK_DSIZE(ip));
+       ASSERT(ip->i_df.if_flags & XFS_IFEXTENTS);
        /*
         * We're freeing a symlink that has some
         * blocks allocated to it.  Free the
@@ -720,3 +726,47 @@ xfs_inactive_symlink_rmt(
  error0:
        return error;
 }
+
+/*
+ * xfs_inactive_symlink - free a symlink
+ */
+int
+xfs_inactive_symlink(
+       struct xfs_inode        *ip,
+       struct xfs_trans        **tp)
+{
+       struct xfs_mount        *mp = ip->i_mount;
+       int                     pathlen;
+
+       trace_xfs_inactive_symlink(ip);
+
+       ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
+
+       if (XFS_FORCED_SHUTDOWN(mp))
+               return XFS_ERROR(EIO);
+
+       /*
+        * Zero length symlinks _can_ exist.
+        */
+       pathlen = (int)ip->i_d.di_size;
+       if (!pathlen)
+               return 0;
+
+       if (pathlen < 0 || pathlen > MAXPATHLEN) {
+               xfs_alert(mp, "%s: inode (0x%llx) bad symlink length (%d)",
+                        __func__, (unsigned long long)ip->i_ino, pathlen);
+               ASSERT(0);
+               return XFS_ERROR(EFSCORRUPTED);
+       }
+
+       if (ip->i_df.if_flags & XFS_IFINLINE) {
+               if (ip->i_df.if_bytes > 0)
+                       xfs_idata_realloc(ip, -(ip->i_df.if_bytes),
+                                         XFS_DATA_FORK);
+               ASSERT(ip->i_df.if_bytes == 0);
+               return 0;
+       }
+
+       /* remove the remote symlink */
+       return xfs_inactive_symlink_rmt(ip, tp);
+}