1 /* 2 * Copyright (c) 2000-2006 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 #ifndef XFS_SYNC_H 19 #define XFS_SYNC_H 1 20 21 struct xfs_mount; 22 struct xfs_perag; 23 24 struct xfs_eofblocks { 25 __u32 eof_flags; 26 kuid_t eof_uid; 27 kgid_t eof_gid; 28 prid_t eof_prid; 29 __u64 eof_min_file_size; 30 xfs_ino_t eof_scan_owner; 31 }; 32 33 #define SYNC_WAIT 0x0001 /* wait for i/o to complete */ 34 #define SYNC_TRYLOCK 0x0002 /* only try to lock inodes */ 35 36 /* 37 * Flags for xfs_iget() 38 */ 39 #define XFS_IGET_CREATE 0x1 40 #define XFS_IGET_UNTRUSTED 0x2 41 #define XFS_IGET_DONTCACHE 0x4 42 43 int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino, 44 uint flags, uint lock_flags, xfs_inode_t **ipp); 45 46 /* recovery needs direct inode allocation capability */ 47 struct xfs_inode * xfs_inode_alloc(struct xfs_mount *mp, xfs_ino_t ino); 48 void xfs_inode_free(struct xfs_inode *ip); 49 50 void xfs_reclaim_worker(struct work_struct *work); 51 52 int xfs_reclaim_inodes(struct xfs_mount *mp, int mode); 53 int xfs_reclaim_inodes_count(struct xfs_mount *mp); 54 long xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan); 55 56 void xfs_inode_set_reclaim_tag(struct xfs_inode *ip); 57 58 void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip); 59 void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip); 60 int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *); 61 int xfs_inode_free_quota_eofblocks(struct xfs_inode *ip); 62 void xfs_eofblocks_worker(struct work_struct *); 63 64 int xfs_inode_ag_iterator(struct xfs_mount *mp, 65 int (*execute)(struct xfs_inode *ip, int flags, void *args), 66 int flags, void *args); 67 int xfs_inode_ag_iterator_tag(struct xfs_mount *mp, 68 int (*execute)(struct xfs_inode *ip, int flags, void *args), 69 int flags, void *args, int tag); 70 71 static inline int 72 xfs_fs_eofblocks_from_user( 73 struct xfs_fs_eofblocks *src, 74 struct xfs_eofblocks *dst) 75 { 76 if (src->eof_version != XFS_EOFBLOCKS_VERSION) 77 return -EINVAL; 78 79 if (src->eof_flags & ~XFS_EOF_FLAGS_VALID) 80 return -EINVAL; 81 82 if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) || 83 memchr_inv(src->pad64, 0, sizeof(src->pad64))) 84 return -EINVAL; 85 86 dst->eof_flags = src->eof_flags; 87 dst->eof_prid = src->eof_prid; 88 dst->eof_min_file_size = src->eof_min_file_size; 89 dst->eof_scan_owner = NULLFSINO; 90 91 dst->eof_uid = INVALID_UID; 92 if (src->eof_flags & XFS_EOF_FLAGS_UID) { 93 dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid); 94 if (!uid_valid(dst->eof_uid)) 95 return -EINVAL; 96 } 97 98 dst->eof_gid = INVALID_GID; 99 if (src->eof_flags & XFS_EOF_FLAGS_GID) { 100 dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid); 101 if (!gid_valid(dst->eof_gid)) 102 return -EINVAL; 103 } 104 return 0; 105 } 106 107 #endif 108