| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/fs/ext3/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 | * ext3 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/quotaops.h> |
| 22 | #include "ext3.h" |
| 23 | #include "xattr.h" |
| 24 | #include "acl.h" |
| 25 | |
| 26 | /* |
| 27 | * Called when an inode is released. Note that this is different |
| 28 | * from ext3_file_open: open gets called at every open, but release |
| 29 | * gets called only when /all/ the files are closed. |
| 30 | */ |
| 31 | static int ext3_release_file (struct inode * inode, struct file * filp) |
| 32 | { |
| 33 | if (ext3_test_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE)) { |
| 34 | filemap_flush(inode->i_mapping); |
| 35 | ext3_clear_inode_state(inode, EXT3_STATE_FLUSH_ON_CLOSE); |
| 36 | } |
| 37 | /* if we are the last writer on the inode, drop the block reservation */ |
| 38 | if ((filp->f_mode & FMODE_WRITE) && |
| 39 | (atomic_read(&inode->i_writecount) == 1)) |
| 40 | { |
| 41 | mutex_lock(&EXT3_I(inode)->truncate_mutex); |
| 42 | ext3_discard_reservation(inode); |
| 43 | mutex_unlock(&EXT3_I(inode)->truncate_mutex); |
| 44 | } |
| 45 | if (is_dx(inode) && filp->private_data) |
| 46 | ext3_htree_free_dir_info(filp->private_data); |
| 47 | |
| 48 | return 0; |
| 49 | } |
| 50 | |
| 51 | const struct file_operations ext3_file_operations = { |
| 52 | .llseek = generic_file_llseek, |
| 53 | .read = do_sync_read, |
| 54 | .write = do_sync_write, |
| 55 | .aio_read = generic_file_aio_read, |
| 56 | .aio_write = generic_file_aio_write, |
| 57 | .unlocked_ioctl = ext3_ioctl, |
| 58 | #ifdef CONFIG_COMPAT |
| 59 | .compat_ioctl = ext3_compat_ioctl, |
| 60 | #endif |
| 61 | .mmap = generic_file_mmap, |
| 62 | .open = dquot_file_open, |
| 63 | .release = ext3_release_file, |
| 64 | .fsync = ext3_sync_file, |
| 65 | .splice_read = generic_file_splice_read, |
| 66 | .splice_write = generic_file_splice_write, |
| 67 | }; |
| 68 | |
| 69 | const struct inode_operations ext3_file_inode_operations = { |
| 70 | .setattr = ext3_setattr, |
| 71 | #ifdef CONFIG_EXT3_FS_XATTR |
| 72 | .setxattr = generic_setxattr, |
| 73 | .getxattr = generic_getxattr, |
| 74 | .listxattr = ext3_listxattr, |
| 75 | .removexattr = generic_removexattr, |
| 76 | #endif |
| 77 | .get_acl = ext3_get_acl, |
| 78 | .fiemap = ext3_fiemap, |
| 79 | }; |
| 80 | |