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 /* 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. 30 */ 31 static int ext2_release_file (struct inode * inode, struct file * filp) 32 { 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 } 38 return 0; 39 } 40 41 /* 42 * We have mostly NULL's here: the current defaults are ok for 43 * the ext2 filesystem. 44 */ 45 const struct file_operations ext2_file_operations = { 46 .llseek = generic_file_llseek, 47 .read = do_sync_read, 48 .write = do_sync_write, 49 .aio_read = generic_file_aio_read, 50 .aio_write = generic_file_aio_write, 51 .unlocked_ioctl = ext2_ioctl, 52 #ifdef CONFIG_COMPAT 53 .compat_ioctl = ext2_compat_ioctl, 54 #endif 55 .mmap = generic_file_mmap, 56 .open = generic_file_open, 57 .release = ext2_release_file, 58 .fsync = simple_fsync, 59 .splice_read = generic_file_splice_read, 60 .splice_write = generic_file_splice_write, 61 }; 62 63 #ifdef CONFIG_EXT2_FS_XIP 64 const struct file_operations ext2_xip_file_operations = { 65 .llseek = generic_file_llseek, 66 .read = xip_file_read, 67 .write = xip_file_write, 68 .unlocked_ioctl = ext2_ioctl, 69 #ifdef CONFIG_COMPAT 70 .compat_ioctl = ext2_compat_ioctl, 71 #endif 72 .mmap = xip_file_mmap, 73 .open = generic_file_open, 74 .release = ext2_release_file, 75 .fsync = simple_fsync, 76 }; 77 #endif 78 79 const struct inode_operations ext2_file_inode_operations = { 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 .check_acl = ext2_check_acl, 89 .fiemap = ext2_fiemap, 90 }; 91