1 /* 2 * linux/fs/sysv/file.c 3 * 4 * minix/file.c 5 * Copyright (C) 1991, 1992 Linus Torvalds 6 * 7 * coh/file.c 8 * Copyright (C) 1993 Pascal Haible, Bruno Haible 9 * 10 * sysv/file.c 11 * Copyright (C) 1993 Bruno Haible 12 * 13 * SystemV/Coherent regular file handling primitives 14 */ 15 16 #include "sysv.h" 17 18 /* 19 * We have mostly NULLs here: the current defaults are OK for 20 * the coh filesystem. 21 */ 22 const struct file_operations sysv_file_operations = { 23 .llseek = generic_file_llseek, 24 .read = do_sync_read, 25 .aio_read = generic_file_aio_read, 26 .write = do_sync_write, 27 .aio_write = generic_file_aio_write, 28 .mmap = generic_file_mmap, 29 .fsync = sysv_sync_file, 30 .splice_read = generic_file_splice_read, 31 }; 32 33 const struct inode_operations sysv_file_inode_operations = { 34 .truncate = sysv_truncate, 35 .getattr = sysv_getattr, 36 }; 37 38 int sysv_sync_file(struct file * file, struct dentry *dentry, int datasync) 39 { 40 struct inode *inode = dentry->d_inode; 41 int err; 42 43 err = sync_mapping_buffers(inode->i_mapping); 44 if (!(inode->i_state & I_DIRTY)) 45 return err; 46 if (datasync && !(inode->i_state & I_DIRTY_DATASYNC)) 47 return err; 48 49 err |= sysv_sync_inode(inode); 50 return err ? -EIO : 0; 51 } 52