git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * linux/fs/ext2/file.c | |
| 3 | * | |
| 4 | * Copyright (C) 1992, 1993, 1994, 1995 | |
| 5 | * Remy Card (card@masi.ibp.fr) | |
| 6 | * Laboratoire MASI - Institut Blaise Pascal | |
| 7 | * Universite Pierre et Marie Curie (Paris VI) | |
| 8 | * | |
| 9 | * from | |
| 10 | * | |
| 11 | * linux/fs/minix/file.c | |
| 12 | * | |
| 13 | * Copyright (C) 1991, 1992 Linus Torvalds | |
| 14 | * | |
| 15 | * ext2 fs regular file handling primitives | |
| 16 | * | |
| 17 | * 64-bit file support on 64-bit platforms by Jakub Jelinek | |
| 18 | * (jj@sunsite.ms.mff.cuni.cz) | |
| 19 | */ | |
| 20 | ||
| 21 | #include <linux/time.h> | |
| 22 | #include "ext2.h" | |
| 23 | #include "xattr.h" | |
| 24 | #include "acl.h" | |
| 25 | ||
| 26 | /* | |
| a6739af8 JK |
27 | * Called when filp is released. This happens when all file descriptors |
| 28 | * for a single struct file are closed. Note that different open() calls | |
| 29 | * for the same file yield different struct file structures. | |
| 1da177e4 LT |
30 | */ |
| 31 | static int ext2_release_file (struct inode * inode, struct file * filp) | |
| 32 | { | |
| a686cd89 MB |
33 | if (filp->f_mode & FMODE_WRITE) { |
| 34 | mutex_lock(&EXT2_I(inode)->truncate_mutex); | |
| 35 | ext2_discard_reservation(inode); | |
| 36 | mutex_unlock(&EXT2_I(inode)->truncate_mutex); | |
| 37 | } | |
| 1da177e4 LT |
38 | return 0; |
| 39 | } | |
| 40 | ||
| 41 | /* | |
| 42 | * We have mostly NULL's here: the current defaults are ok for | |
| 43 | * the ext2 filesystem. | |
| 44 | */ | |
| 4b6f5d20 | 45 | const struct file_operations ext2_file_operations = { |
| 1da177e4 | 46 | .llseek = generic_file_llseek, |
| 543ade1f BP |
47 | .read = do_sync_read, |
| 48 | .write = do_sync_write, | |
| 1da177e4 LT |
49 | .aio_read = generic_file_aio_read, |
| 50 | .aio_write = generic_file_aio_write, | |
| 51 | .ioctl = ext2_ioctl, | |
| e322ff07 DH |
52 | #ifdef CONFIG_COMPAT |
| 53 | .compat_ioctl = ext2_compat_ioctl, | |
| 54 | #endif | |
| 1da177e4 LT |
55 | .mmap = generic_file_mmap, |
| 56 | .open = generic_file_open, | |
| 57 | .release = ext2_release_file, | |
| 58 | .fsync = ext2_sync_file, | |
| 5274f052 JA |
59 | .splice_read = generic_file_splice_read, |
| 60 | .splice_write = generic_file_splice_write, | |
| 1da177e4 LT |
61 | }; |
| 62 | ||
| 6d79125b | 63 | #ifdef CONFIG_EXT2_FS_XIP |
| 4b6f5d20 | 64 | const struct file_operations ext2_xip_file_operations = { |
| 6d79125b | 65 | .llseek = generic_file_llseek, |
| eb6fe0c3 CO |
66 | .read = xip_file_read, |
| 67 | .write = xip_file_write, | |
| 6d79125b | 68 | .ioctl = ext2_ioctl, |
| e322ff07 DH |
69 | #ifdef CONFIG_COMPAT |
| 70 | .compat_ioctl = ext2_compat_ioctl, | |
| 71 | #endif | |
| 6d79125b CO |
72 | .mmap = xip_file_mmap, |
| 73 | .open = generic_file_open, | |
| 74 | .release = ext2_release_file, | |
| 75 | .fsync = ext2_sync_file, | |
| 6d79125b CO |
76 | }; |
| 77 | #endif | |
| 78 | ||
| 754661f1 | 79 | const struct inode_operations ext2_file_inode_operations = { |
| 1da177e4 LT |
80 | .truncate = ext2_truncate, |
| 81 | #ifdef CONFIG_EXT2_FS_XATTR | |
| 82 | .setxattr = generic_setxattr, | |
| 83 | .getxattr = generic_getxattr, | |
| 84 | .listxattr = ext2_listxattr, | |
| 85 | .removexattr = generic_removexattr, | |
| 86 | #endif | |
| 87 | .setattr = ext2_setattr, | |
| 88 | .permission = ext2_permission, | |
| 89 | }; |