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 struct file_operations sysv_file_operations = { 23 .llseek = generic_file_llseek, 24 .read = generic_file_read, 25 .write = generic_file_write, 26 .mmap = generic_file_mmap, 27 .fsync = sysv_sync_file, 28 .sendfile = generic_file_sendfile, 29 }; 30 31 struct inode_operations sysv_file_inode_operations = { 32 .truncate = sysv_truncate, 33 .getattr = sysv_getattr, 34 }; 35 36 int sysv_sync_file(struct file * file, struct dentry *dentry, int datasync) 37 { 38 struct inode *inode = dentry->d_inode; 39 int err; 40 41 err = sync_mapping_buffers(inode->i_mapping); 42 if (!(inode->i_state & I_DIRTY)) 43 return err; 44 if (datasync && !(inode->i_state & I_DIRTY_DATASYNC)) 45 return err; 46 47 err |= sysv_sync_inode(inode); 48 return err ? -EIO : 0; 49 } 50