projects / GitHub / LineageOS / android_kernel_samsung_universal7580.git / blame
| Commit | Line | Data |
|---|---|---|
| 19de7351 DC |
1 | /* |
| 2 | * Copyright (c) 2012 Red Hat, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or | |
| 5 | * modify it under the terms of the GNU General Public License as | |
| 6 | * published by the Free Software Foundation. | |
| 7 | * | |
| 8 | * This program is distributed in the hope that it would be useful, | |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 11 | * GNU General Public License for more details. | |
| 12 | * | |
| 13 | * You should have received a copy of the GNU General Public License | |
| 14 | * along with this program; if not, write the Free Software Foundation, | |
| 15 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 16 | */ | |
| 17 | #ifndef __XFS_SYMLINK_H | |
| 18 | #define __XFS_SYMLINK_H 1 | |
| 19 | ||
| f948dd76 DC |
20 | struct xfs_mount; |
| 21 | struct xfs_trans; | |
| 22 | struct xfs_inode; | |
| 23 | struct xfs_buf; | |
| 24 | struct xfs_ifork; | |
| 25 | struct xfs_name; | |
| 26 | ||
| 27 | #define XFS_SYMLINK_MAGIC 0x58534c4d /* XSLM */ | |
| 28 | ||
| 29 | struct xfs_dsymlink_hdr { | |
| 30 | __be32 sl_magic; | |
| 31 | __be32 sl_offset; | |
| 32 | __be32 sl_bytes; | |
| 33 | __be32 sl_crc; | |
| 34 | uuid_t sl_uuid; | |
| 35 | __be64 sl_owner; | |
| 36 | __be64 sl_blkno; | |
| 37 | __be64 sl_lsn; | |
| 38 | }; | |
| 39 | ||
| 19de7351 DC |
40 | /* |
| 41 | * The maximum pathlen is 1024 bytes. Since the minimum file system | |
| f948dd76 DC |
42 | * blocksize is 512 bytes, we can get a max of 3 extents back from |
| 43 | * bmapi when crc headers are taken into account. | |
| 19de7351 | 44 | */ |
| f948dd76 DC |
45 | #define XFS_SYMLINK_MAPS 3 |
| 46 | ||
| 47 | #define XFS_SYMLINK_BUF_SPACE(mp, bufsize) \ | |
| 48 | ((bufsize) - (xfs_sb_version_hascrc(&(mp)->m_sb) ? \ | |
| 49 | sizeof(struct xfs_dsymlink_hdr) : 0)) | |
| 50 | ||
| 51 | int xfs_symlink_blocks(struct xfs_mount *mp, int pathlen); | |
| 19de7351 DC |
52 | |
| 53 | void xfs_symlink_local_to_remote(struct xfs_trans *tp, struct xfs_buf *bp, | |
| 54 | struct xfs_inode *ip, struct xfs_ifork *ifp); | |
| 55 | ||
| f948dd76 DC |
56 | extern const struct xfs_buf_ops xfs_symlink_buf_ops; |
| 57 | ||
| 19de7351 DC |
58 | #ifdef __KERNEL__ |
| 59 | ||
| 60 | int xfs_symlink(struct xfs_inode *dp, struct xfs_name *link_name, | |
| 61 | const char *target_path, umode_t mode, struct xfs_inode **ipp); | |
| 62 | int xfs_readlink(struct xfs_inode *ip, char *link); | |
| 63 | int xfs_inactive_symlink_rmt(struct xfs_inode *ip, struct xfs_trans **tpp); | |
| 64 | ||
| 65 | #endif /* __KERNEL__ */ | |
| 66 | #endif /* __XFS_SYMLINK_H */ |