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 }; 31 32 #define SYNC_WAIT 0x0001 /* wait for i/o to complete */ 33 #define SYNC_TRYLOCK 0x0002 /* only try to lock inodes */ 34 35 /* 36 * Flags for xfs_iget() 37 */ 38 #define XFS_IGET_CREATE 0x1 39 #define XFS_IGET_UNTRUSTED 0x2 40 #define XFS_IGET_DONTCACHE 0x4 41 42 int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino, 43 uint flags, uint lock_flags, xfs_inode_t **ipp); 44 45 /* recovery needs direct inode allocation capability */ 46 struct xfs_inode * xfs_inode_alloc(struct xfs_mount *mp, xfs_ino_t ino); 47 void xfs_inode_free(struct xfs_inode *ip); 48 49 void xfs_reclaim_worker(struct work_struct *work); 50 51 int xfs_reclaim_inodes(struct xfs_mount *mp, int mode); 52 int xfs_reclaim_inodes_count(struct xfs_mount *mp); 53 long xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan); 54 55 void xfs_inode_set_reclaim_tag(struct xfs_inode *ip); 56 57 void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip); 58 void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip); 59 int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *); 60 void xfs_eofblocks_worker(struct work_struct *); 61 62 int xfs_inode_ag_iterator(struct xfs_mount *mp, 63 int (*execute)(struct xfs_inode *ip, int flags, void *args), 64 int flags, void *args); 65 int xfs_inode_ag_iterator_tag(struct xfs_mount *mp, 66 int (*execute)(struct xfs_inode *ip, int flags, void *args), 67 int flags, void *args, int tag); 68 69 static inline int 70 xfs_fs_eofblocks_from_user( 71 struct xfs_fs_eofblocks *src, 72 struct xfs_eofblocks *dst) 73 { 74 if (src->eof_version != XFS_EOFBLOCKS_VERSION) 75 return EINVAL; 76 77 if (src->eof_flags & ~XFS_EOF_FLAGS_VALID) 78 return EINVAL; 79 80 if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) || 81 memchr_inv(src->pad64, 0, sizeof(src->pad64))) 82 return EINVAL; 83 84 dst->eof_flags = src->eof_flags; 85 dst->eof_prid = src->eof_prid; 86 dst->eof_min_file_size = src->eof_min_file_size; 87 88 dst->eof_uid = INVALID_UID; 89 if (src->eof_flags & XFS_EOF_FLAGS_UID) { 90 dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid); 91 if (!uid_valid(dst->eof_uid)) 92 return EINVAL; 93 } 94 95 dst->eof_gid = INVALID_GID; 96 if (src->eof_flags & XFS_EOF_FLAGS_GID) { 97 dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid); 98 if (!gid_valid(dst->eof_gid)) 99 return EINVAL; 100 } 101 return 0; 102 } 103 104 #endif 105