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[linux-2.6.git] / fs / xfs / xfs_itable.c
index 7b028f7..0e86be1 100644 (file)
 #define unuseracc(ubuffer, size, flags)
 #endif
 
-STATIC int
-xfs_bulkstat_one_iget(
+/*
+ * Return stat information for one inode.
+ * Return 0 if ok, else errno.
+ */
+int                            /* error status */
+xfs_bulkstat_one(
        xfs_mount_t     *mp,            /* mount point for filesystem */
        xfs_ino_t       ino,            /* inode number to get data for */
+       void            __user *buffer, /* buffer to place output in */
+       int             ubsize,         /* size of buffer */
+       void            *private_data,  /* my private data */
        xfs_daddr_t     bno,            /* starting bno of inode cluster */
-       xfs_bstat_t     *buf,           /* return buffer */
+       int             *ubused,        /* bytes used by me */
+       void            *dibuff,        /* on-disk inode buffer */
        int             *stat)          /* BULKSTAT_RV_... */
 {
+       xfs_bstat_t     *buf;           /* return buffer */
+       int             error;          /* error value */
+       xfs_dinode_t    *dip;           /* dinode inode pointer */
        xfs_dinode_core_t *dic;         /* dinode core info pointer */
-       xfs_inode_t     *ip;            /* incore inode pointer */
-       int             error;
+       xfs_inode_t     *ip = NULL;     /* incore inode pointer */
+       xfs_arch_t      arch;           /* these are set according to      */
 
-       error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, bno);
-       if (error) {
+       dip = (xfs_dinode_t *)dibuff;
+
+       if (!buffer || ino == mp->m_sb.sb_rbmino || ino == mp->m_sb.sb_rsumino ||
+           (XFS_SB_VERSION_HASQUOTA(&mp->m_sb) &&
+            (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino))) {
                *stat = BULKSTAT_RV_NOTHING;
-               return error;
+               return XFS_ERROR(EINVAL);
        }
-
-       ASSERT(ip != NULL);
-       ASSERT(ip->i_blkno != (xfs_daddr_t)0);
-       if (ip->i_d.di_mode == 0) {
+       if (ubsize < sizeof(*buf)) {
                *stat = BULKSTAT_RV_NOTHING;
-               error = XFS_ERROR(ENOENT);
-               goto out_iput;
+               return XFS_ERROR(ENOMEM);
        }
 
-       dic = &ip->i_d;
+       buf = kmem_alloc(sizeof(*buf), KM_SLEEP);
 
-       /* xfs_iget returns the following without needing
-        * further change.
-        */
-       buf->bs_nlink = dic->di_nlink;
-       buf->bs_projid = dic->di_projid;
-       buf->bs_ino = ino;
-       buf->bs_mode = dic->di_mode;
-       buf->bs_uid = dic->di_uid;
-       buf->bs_gid = dic->di_gid;
-       buf->bs_xid = dic->di_xid;
-       buf->bs_size = dic->di_size;
-       buf->bs_atime.tv_sec = dic->di_atime.t_sec;
-       buf->bs_atime.tv_nsec = dic->di_atime.t_nsec;
-       buf->bs_mtime.tv_sec = dic->di_mtime.t_sec;
-       buf->bs_mtime.tv_nsec = dic->di_mtime.t_nsec;
-       buf->bs_ctime.tv_sec = dic->di_ctime.t_sec;
-       buf->bs_ctime.tv_nsec = dic->di_ctime.t_nsec;
-       buf->bs_xflags = xfs_ip2xflags(ip);
-       buf->bs_extsize = dic->di_extsize << mp->m_sb.sb_blocklog;
-       buf->bs_extents = dic->di_nextents;
-       buf->bs_gen = dic->di_gen;
-       memset(buf->bs_pad, 0, sizeof(buf->bs_pad));
-       buf->bs_dmevmask = dic->di_dmevmask;
-       buf->bs_dmstate = dic->di_dmstate;
-       buf->bs_aextents = dic->di_anextents;
+       if (dip == NULL) {
+               /* We're not being passed a pointer to a dinode.  This happens
+                * if BULKSTAT_FG_IGET is selected.  Do the iget.
+                */
+               error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, bno);
+               if (error) {
+                       *stat = BULKSTAT_RV_NOTHING;
+                       return error;
+               }
+               ASSERT(ip != NULL);
+               ASSERT(ip->i_blkno != (xfs_daddr_t)0);
+               if (ip->i_d.di_mode == 0) {
+                       xfs_iput_new(ip, XFS_ILOCK_SHARED);
+                       *stat = BULKSTAT_RV_NOTHING;
+                       kmem_free(buf, sizeof(*buf));
+                       return XFS_ERROR(ENOENT);
+               }
+               dic = &ip->i_d;
+               arch = ARCH_NOCONVERT;          /* in-core! */
+               ASSERT(dic != NULL);
 
-       switch (dic->di_format) {
-       case XFS_DINODE_FMT_DEV:
-               buf->bs_rdev = ip->i_df.if_u2.if_rdev;
-               buf->bs_blksize = BLKDEV_IOSIZE;
-               buf->bs_blocks = 0;
-               break;
-       case XFS_DINODE_FMT_LOCAL:
-       case XFS_DINODE_FMT_UUID:
-               buf->bs_rdev = 0;
-               buf->bs_blksize = mp->m_sb.sb_blocksize;
-               buf->bs_blocks = 0;
-               break;
-       case XFS_DINODE_FMT_EXTENTS:
-       case XFS_DINODE_FMT_BTREE:
-               buf->bs_rdev = 0;
-               buf->bs_blksize = mp->m_sb.sb_blocksize;
-               buf->bs_blocks = dic->di_nblocks + ip->i_delayed_blks;
-               break;
-       }
+               /* xfs_iget returns the following without needing
+                * further change.
+                */
+               buf->bs_nlink = dic->di_nlink;
+               buf->bs_projid = dic->di_projid;
 
- out_iput:
-       xfs_iput(ip, XFS_ILOCK_SHARED);
-       return error;
-}
+       } else {
+               dic = &dip->di_core;
+               ASSERT(dic != NULL);
 
-STATIC int
-xfs_bulkstat_one_dinode(
-       xfs_mount_t     *mp,            /* mount point for filesystem */
-       xfs_ino_t       ino,            /* inode number to get data for */
-       xfs_dinode_t    *dip,           /* dinode inode pointer */
-       xfs_bstat_t     *buf)           /* return buffer */
-{
-       xfs_dinode_core_t *dic;         /* dinode core info pointer */
+               /* buffer dinode_core is in on-disk arch */
+               arch = ARCH_CONVERT;
 
-       dic = &dip->di_core;
+               /*
+                * The inode format changed when we moved the link count and
+                * made it 32 bits long.  If this is an old format inode,
+                * convert it in memory to look like a new one.  If it gets
+                * flushed to disk we will convert back before flushing or
+                * logging it.  We zero out the new projid field and the old link
+                * count field.  We'll handle clearing the pad field (the remains
+                * of the old uuid field) when we actually convert the inode to
+                * the new format. We don't change the version number so that we
+                * can distinguish this from a real new format inode.
+                */
+               if (INT_GET(dic->di_version, arch) == XFS_DINODE_VERSION_1) {
+                       buf->bs_nlink = INT_GET(dic->di_onlink, arch);
+                       buf->bs_projid = 0;
+               }
+               else {
+                       buf->bs_nlink = INT_GET(dic->di_nlink, arch);
+                       buf->bs_projid = INT_GET(dic->di_projid, arch);
+               }
 
-       /*
-        * The inode format changed when we moved the link count and
-        * made it 32 bits long.  If this is an old format inode,
-        * convert it in memory to look like a new one.  If it gets
-        * flushed to disk we will convert back before flushing or
-        * logging it.  We zero out the new projid field and the old link
-        * count field.  We'll handle clearing the pad field (the remains
-        * of the old uuid field) when we actually convert the inode to
-        * the new format. We don't change the version number so that we
-        * can distinguish this from a real new format inode.
-        */
-       if (INT_GET(dic->di_version, ARCH_CONVERT) == XFS_DINODE_VERSION_1) {
-               buf->bs_nlink = INT_GET(dic->di_onlink, ARCH_CONVERT);
-               buf->bs_projid = 0;
-       } else {
-               buf->bs_nlink = INT_GET(dic->di_nlink, ARCH_CONVERT);
-               buf->bs_projid = INT_GET(dic->di_projid, ARCH_CONVERT);
        }
 
        buf->bs_ino = ino;
-       buf->bs_mode = INT_GET(dic->di_mode, ARCH_CONVERT);
-       buf->bs_uid = INT_GET(dic->di_uid, ARCH_CONVERT);
-       buf->bs_gid = INT_GET(dic->di_gid, ARCH_CONVERT);
-       buf->bs_xid = INT_GET(dic->di_xid, ARCH_CONVERT);
-       buf->bs_size = INT_GET(dic->di_size, ARCH_CONVERT);
-       buf->bs_atime.tv_sec = INT_GET(dic->di_atime.t_sec, ARCH_CONVERT);
-       buf->bs_atime.tv_nsec = INT_GET(dic->di_atime.t_nsec, ARCH_CONVERT);
-       buf->bs_mtime.tv_sec = INT_GET(dic->di_mtime.t_sec, ARCH_CONVERT);
-       buf->bs_mtime.tv_nsec = INT_GET(dic->di_mtime.t_nsec, ARCH_CONVERT);
-       buf->bs_ctime.tv_sec = INT_GET(dic->di_ctime.t_sec, ARCH_CONVERT);
-       buf->bs_ctime.tv_nsec = INT_GET(dic->di_ctime.t_nsec, ARCH_CONVERT);
-       buf->bs_xflags = xfs_dic2xflags(dic);
-       buf->bs_extsize = INT_GET(dic->di_extsize, ARCH_CONVERT) << mp->m_sb.sb_blocklog;
-       buf->bs_extents = INT_GET(dic->di_nextents, ARCH_CONVERT);
-       buf->bs_gen = INT_GET(dic->di_gen, ARCH_CONVERT);
+       buf->bs_mode = INT_GET(dic->di_mode, arch);
+       buf->bs_uid = INT_GET(dic->di_uid, arch);
+       buf->bs_gid = INT_GET(dic->di_gid, arch);
+       buf->bs_size = INT_GET(dic->di_size, arch);
+       buf->bs_atime.tv_sec = INT_GET(dic->di_atime.t_sec, arch);
+       buf->bs_atime.tv_nsec = INT_GET(dic->di_atime.t_nsec, arch);
+       buf->bs_mtime.tv_sec = INT_GET(dic->di_mtime.t_sec, arch);
+       buf->bs_mtime.tv_nsec = INT_GET(dic->di_mtime.t_nsec, arch);
+       buf->bs_ctime.tv_sec = INT_GET(dic->di_ctime.t_sec, arch);
+       buf->bs_ctime.tv_nsec = INT_GET(dic->di_ctime.t_nsec, arch);
+       buf->bs_xflags = xfs_dic2xflags(dic, arch);
+       buf->bs_extsize = INT_GET(dic->di_extsize, arch) << mp->m_sb.sb_blocklog;
+       buf->bs_extents = INT_GET(dic->di_nextents, arch);
+       buf->bs_gen = INT_GET(dic->di_gen, arch);
        memset(buf->bs_pad, 0, sizeof(buf->bs_pad));
-       buf->bs_dmevmask = INT_GET(dic->di_dmevmask, ARCH_CONVERT);
-       buf->bs_dmstate = INT_GET(dic->di_dmstate, ARCH_CONVERT);
-       buf->bs_aextents = INT_GET(dic->di_anextents, ARCH_CONVERT);
+       buf->bs_dmevmask = INT_GET(dic->di_dmevmask, arch);
+       buf->bs_dmstate = INT_GET(dic->di_dmstate, arch);
+       buf->bs_aextents = INT_GET(dic->di_anextents, arch);
 
-       switch (INT_GET(dic->di_format, ARCH_CONVERT)) {
+       switch (INT_GET(dic->di_format, arch)) {
        case XFS_DINODE_FMT_DEV:
-               buf->bs_rdev = INT_GET(dip->di_u.di_dev, ARCH_CONVERT);
+               if ( ip ) {
+                       buf->bs_rdev = ip->i_df.if_u2.if_rdev;
+               } else {
+                       buf->bs_rdev = INT_GET(dip->di_u.di_dev, arch);
+               }
+
                buf->bs_blksize = BLKDEV_IOSIZE;
                buf->bs_blocks = 0;
                break;
@@ -206,72 +195,29 @@ xfs_bulkstat_one_dinode(
        case XFS_DINODE_FMT_BTREE:
                buf->bs_rdev = 0;
                buf->bs_blksize = mp->m_sb.sb_blocksize;
-               buf->bs_blocks = INT_GET(dic->di_nblocks, ARCH_CONVERT);
+               if ( ip ) {
+                       buf->bs_blocks = INT_GET(dic->di_nblocks, arch) + ip->i_delayed_blks;
+               } else {
+                       buf->bs_blocks = INT_GET(dic->di_nblocks, arch);
+               }
                break;
        }
 
-       return 0;
-}
-
-/*
- * Return stat information for one inode.
- * Return 0 if ok, else errno.
- */
-int                            /* error status */
-xfs_bulkstat_one(
-       xfs_mount_t     *mp,            /* mount point for filesystem */
-       xfs_ino_t       ino,            /* inode number to get data for */
-       void            __user *buffer, /* buffer to place output in */
-       int             ubsize,         /* size of buffer */
-       void            *private_data,  /* my private data */
-       xfs_daddr_t     bno,            /* starting bno of inode cluster */
-       int             *ubused,        /* bytes used by me */
-       void            *dibuff,        /* on-disk inode buffer */
-       int             *stat)          /* BULKSTAT_RV_... */
-{
-       xfs_bstat_t     *buf;           /* return buffer */
-       int             error = 0;      /* error value */
-       xfs_dinode_t    *dip;           /* dinode inode pointer */
-
-       dip = (xfs_dinode_t *)dibuff;
-
-       if (!buffer || ino == mp->m_sb.sb_rbmino || ino == mp->m_sb.sb_rsumino ||
-           (XFS_SB_VERSION_HASQUOTA(&mp->m_sb) &&
-            (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino))) {
-               *stat = BULKSTAT_RV_NOTHING;
-               return XFS_ERROR(EINVAL);
-       }
-       if (ubsize < sizeof(*buf)) {
-               *stat = BULKSTAT_RV_NOTHING;
-               return XFS_ERROR(ENOMEM);
-       }
-
-       buf = kmem_alloc(sizeof(*buf), KM_SLEEP);
-
-       if (dip == NULL) {
-               /* We're not being passed a pointer to a dinode.  This happens
-                * if BULKSTAT_FG_IGET is selected.  Do the iget.
-                */
-               error = xfs_bulkstat_one_iget(mp, ino, bno, buf, stat);
-               if (error)
-                       goto out_free;
-       } else {
-               xfs_bulkstat_one_dinode(mp, ino, dip, buf);
+       if (ip) {
+               xfs_iput(ip, XFS_ILOCK_SHARED);
        }
 
        if (copy_to_user(buffer, buf, sizeof(*buf)))  {
+               kmem_free(buf, sizeof(*buf));
                *stat = BULKSTAT_RV_NOTHING;
-               error =  EFAULT;
-               goto out_free;
+               return EFAULT;
        }
 
+       kmem_free(buf, sizeof(*buf));
        *stat = BULKSTAT_RV_DIDONE;
        if (ubused)
                *ubused = sizeof(*buf);
-
- out_free:
-       kmem_free(buf, sizeof(*buf));
-       return error;
+       return 0;
 }
 
 /*
@@ -406,7 +352,7 @@ xfs_bulkstat(
                            tmp &&      /* lookup succeeded */
                                        /* got the record, should always work */
                            !(error = xfs_inobt_get_rec(cur, &gino, &gcnt,
-                                   &gfree, &i)) &&
+                                   &gfree, &i, ARCH_NOCONVERT)) &&
                            i == 1 &&
                                        /* this is the right chunk */
                            agino < gino + XFS_INODES_PER_CHUNK &&
@@ -475,7 +421,7 @@ xfs_bulkstat(
                         */
                        if (error ||
                            (error = xfs_inobt_get_rec(cur, &gino, &gcnt,
-                                   &gfree, &i)) ||
+                                   &gfree, &i, ARCH_NOCONVERT)) ||
                            i == 0) {
                                end_of_ag = 1;
                                break;
@@ -798,7 +744,7 @@ xfs_inumbers(
                        }
                }
                if ((error = xfs_inobt_get_rec(cur, &gino, &gcnt, &gfree,
-                       &i)) ||
+                       &i, ARCH_NOCONVERT)) ||
                    i == 0) {
                        xfs_buf_relse(agbp);
                        agbp = NULL;