Lines Matching refs:file
49 loff_t vfs_setpos(struct file *file, loff_t offset, loff_t maxsize) in vfs_setpos() argument
51 if (offset < 0 && !unsigned_offsets(file)) in vfs_setpos()
56 if (offset != file->f_pos) { in vfs_setpos()
57 file->f_pos = offset; in vfs_setpos()
58 file->f_version = 0; in vfs_setpos()
81 generic_file_llseek_size(struct file *file, loff_t offset, int whence, in generic_file_llseek_size() argument
96 return file->f_pos; in generic_file_llseek_size()
102 spin_lock(&file->f_lock); in generic_file_llseek_size()
103 offset = vfs_setpos(file, file->f_pos + offset, maxsize); in generic_file_llseek_size()
104 spin_unlock(&file->f_lock); in generic_file_llseek_size()
125 return vfs_setpos(file, offset, maxsize); in generic_file_llseek_size()
139 loff_t generic_file_llseek(struct file *file, loff_t offset, int whence) in generic_file_llseek() argument
141 struct inode *inode = file->f_mapping->host; in generic_file_llseek()
143 return generic_file_llseek_size(file, offset, whence, in generic_file_llseek()
157 loff_t fixed_size_llseek(struct file *file, loff_t offset, int whence, loff_t size) in fixed_size_llseek() argument
161 return generic_file_llseek_size(file, offset, whence, in fixed_size_llseek()
176 loff_t no_seek_end_llseek(struct file *file, loff_t offset, int whence) in no_seek_end_llseek() argument
180 return generic_file_llseek_size(file, offset, whence, in no_seek_end_llseek()
196 loff_t no_seek_end_llseek_size(struct file *file, loff_t offset, int whence, loff_t size) in no_seek_end_llseek_size() argument
200 return generic_file_llseek_size(file, offset, whence, in no_seek_end_llseek_size()
219 loff_t noop_llseek(struct file *file, loff_t offset, int whence) in noop_llseek() argument
221 return file->f_pos; in noop_llseek()
225 loff_t no_llseek(struct file *file, loff_t offset, int whence) in no_llseek() argument
231 loff_t default_llseek(struct file *file, loff_t offset, int whence) in default_llseek() argument
233 struct inode *inode = file_inode(file); in default_llseek()
243 retval = file->f_pos; in default_llseek()
246 offset += file->f_pos; in default_llseek()
273 if (offset >= 0 || unsigned_offsets(file)) { in default_llseek()
274 if (offset != file->f_pos) { in default_llseek()
275 file->f_pos = offset; in default_llseek()
276 file->f_version = 0; in default_llseek()
286 loff_t vfs_llseek(struct file *file, loff_t offset, int whence) in vfs_llseek() argument
288 loff_t (*fn)(struct file *, loff_t, int); in vfs_llseek()
291 if (file->f_mode & FMODE_LSEEK) { in vfs_llseek()
292 if (file->f_op->llseek) in vfs_llseek()
293 fn = file->f_op->llseek; in vfs_llseek()
295 return fn(file, offset, whence); in vfs_llseek()
303 if (!f.file) in ksys_lseek()
308 loff_t res = vfs_llseek(f.file, offset, whence); in ksys_lseek()
339 if (!f.file) in SYSCALL_DEFINE5()
346 offset = vfs_llseek(f.file, ((loff_t) offset_high << 32) | offset_low, in SYSCALL_DEFINE5()
361 int rw_verify_area(int read_write, struct file *file, const loff_t *ppos, size_t count) in rw_verify_area() argument
366 inode = file_inode(file); in rw_verify_area()
378 if (!unsigned_offsets(file)) in rw_verify_area()
383 if (!unsigned_offsets(file)) in rw_verify_area()
388 retval = locks_mandatory_area(inode, file, pos, pos + count - 1, in rw_verify_area()
395 return security_file_permission(file, in rw_verify_area()
399 static ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos) in new_sync_read()
417 static int warn_unsupported(struct file *file, const char *op) in warn_unsupported() argument
421 op, file, current->pid, current->comm); in warn_unsupported()
425 ssize_t __kernel_read(struct file *file, void *buf, size_t count, loff_t *pos) in __kernel_read() argument
435 if (WARN_ON_ONCE(!(file->f_mode & FMODE_READ))) in __kernel_read()
437 if (!(file->f_mode & FMODE_CAN_READ)) in __kernel_read()
443 if (unlikely(!file->f_op->read_iter || file->f_op->read)) in __kernel_read()
444 return warn_unsupported(file, "read"); in __kernel_read()
446 init_sync_kiocb(&kiocb, file); in __kernel_read()
449 ret = file->f_op->read_iter(&kiocb, &iter); in __kernel_read()
453 fsnotify_access(file); in __kernel_read()
460 ssize_t kernel_read(struct file *file, void *buf, size_t count, loff_t *pos) in kernel_read() argument
464 ret = rw_verify_area(READ, file, pos, count); in kernel_read()
467 return __kernel_read(file, buf, count, pos); in kernel_read()
471 ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos) in vfs_read() argument
475 if (!(file->f_mode & FMODE_READ)) in vfs_read()
477 if (!(file->f_mode & FMODE_CAN_READ)) in vfs_read()
482 ret = rw_verify_area(READ, file, pos, count); in vfs_read()
488 if (file->f_op->read) in vfs_read()
489 ret = file->f_op->read(file, buf, count, pos); in vfs_read()
490 else if (file->f_op->read_iter) in vfs_read()
491 ret = new_sync_read(file, buf, count, pos); in vfs_read()
495 fsnotify_access(file); in vfs_read()
502 static ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos) in new_sync_write()
521 ssize_t __kernel_write(struct file *file, const void *buf, size_t count, loff_t *pos) in __kernel_write() argument
531 if (WARN_ON_ONCE(!(file->f_mode & FMODE_WRITE))) in __kernel_write()
533 if (!(file->f_mode & FMODE_CAN_WRITE)) in __kernel_write()
539 if (unlikely(!file->f_op->write_iter || file->f_op->write)) in __kernel_write()
540 return warn_unsupported(file, "write"); in __kernel_write()
542 init_sync_kiocb(&kiocb, file); in __kernel_write()
545 ret = file->f_op->write_iter(&kiocb, &iter); in __kernel_write()
549 fsnotify_modify(file); in __kernel_write()
564 ssize_t kernel_write(struct file *file, const void *buf, size_t count, in kernel_write() argument
569 ret = rw_verify_area(WRITE, file, pos, count); in kernel_write()
573 file_start_write(file); in kernel_write()
574 ret = __kernel_write(file, buf, count, pos); in kernel_write()
575 file_end_write(file); in kernel_write()
580 ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_t *pos) in vfs_write() argument
584 if (!(file->f_mode & FMODE_WRITE)) in vfs_write()
586 if (!(file->f_mode & FMODE_CAN_WRITE)) in vfs_write()
591 ret = rw_verify_area(WRITE, file, pos, count); in vfs_write()
596 file_start_write(file); in vfs_write()
597 if (file->f_op->write) in vfs_write()
598 ret = file->f_op->write(file, buf, count, pos); in vfs_write()
599 else if (file->f_op->write_iter) in vfs_write()
600 ret = new_sync_write(file, buf, count, pos); in vfs_write()
604 fsnotify_modify(file); in vfs_write()
608 file_end_write(file); in vfs_write()
613 static inline loff_t *file_ppos(struct file *file) in file_ppos() argument
615 return file->f_mode & FMODE_STREAM ? NULL : &file->f_pos; in file_ppos()
623 if (f.file) { in ksys_read()
624 loff_t pos, *ppos = file_ppos(f.file); in ksys_read()
629 ret = vfs_read(f.file, buf, count, ppos); in ksys_read()
631 f.file->f_pos = pos; in ksys_read()
647 if (f.file) { in ksys_write()
648 loff_t pos, *ppos = file_ppos(f.file); in ksys_write()
653 ret = vfs_write(f.file, buf, count, ppos); in ksys_write()
655 f.file->f_pos = pos; in ksys_write()
678 if (f.file) { in ksys_pread64()
680 if (f.file->f_mode & FMODE_PREAD) in ksys_pread64()
681 ret = vfs_read(f.file, buf, count, &pos); in ksys_pread64()
704 if (f.file) { in ksys_pwrite64()
706 if (f.file->f_mode & FMODE_PWRITE) in ksys_pwrite64()
707 ret = vfs_write(f.file, buf, count, &pos); in ksys_pwrite64()
720 static ssize_t do_iter_readv_writev(struct file *filp, struct iov_iter *iter, in do_iter_readv_writev()
743 static ssize_t do_loop_readv_writev(struct file *filp, struct iov_iter *iter, in do_loop_readv_writev()
777 static ssize_t do_iter_read(struct file *file, struct iov_iter *iter, in do_iter_read() argument
783 if (!(file->f_mode & FMODE_READ)) in do_iter_read()
785 if (!(file->f_mode & FMODE_CAN_READ)) in do_iter_read()
791 ret = rw_verify_area(READ, file, pos, tot_len); in do_iter_read()
795 if (file->f_op->read_iter) in do_iter_read()
796 ret = do_iter_readv_writev(file, iter, pos, READ, flags); in do_iter_read()
798 ret = do_loop_readv_writev(file, iter, pos, READ, flags); in do_iter_read()
801 fsnotify_access(file); in do_iter_read()
805 ssize_t vfs_iocb_iter_read(struct file *file, struct kiocb *iocb, in vfs_iocb_iter_read() argument
811 if (!file->f_op->read_iter) in vfs_iocb_iter_read()
813 if (!(file->f_mode & FMODE_READ)) in vfs_iocb_iter_read()
815 if (!(file->f_mode & FMODE_CAN_READ)) in vfs_iocb_iter_read()
821 ret = rw_verify_area(READ, file, &iocb->ki_pos, tot_len); in vfs_iocb_iter_read()
825 ret = call_read_iter(file, iocb, iter); in vfs_iocb_iter_read()
828 fsnotify_access(file); in vfs_iocb_iter_read()
833 ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos, in vfs_iter_read() argument
836 if (!file->f_op->read_iter) in vfs_iter_read()
838 return do_iter_read(file, iter, ppos, flags); in vfs_iter_read()
842 static ssize_t do_iter_write(struct file *file, struct iov_iter *iter, in do_iter_write() argument
848 if (!(file->f_mode & FMODE_WRITE)) in do_iter_write()
850 if (!(file->f_mode & FMODE_CAN_WRITE)) in do_iter_write()
856 ret = rw_verify_area(WRITE, file, pos, tot_len); in do_iter_write()
860 if (file->f_op->write_iter) in do_iter_write()
861 ret = do_iter_readv_writev(file, iter, pos, WRITE, flags); in do_iter_write()
863 ret = do_loop_readv_writev(file, iter, pos, WRITE, flags); in do_iter_write()
865 fsnotify_modify(file); in do_iter_write()
869 ssize_t vfs_iocb_iter_write(struct file *file, struct kiocb *iocb, in vfs_iocb_iter_write() argument
875 if (!file->f_op->write_iter) in vfs_iocb_iter_write()
877 if (!(file->f_mode & FMODE_WRITE)) in vfs_iocb_iter_write()
879 if (!(file->f_mode & FMODE_CAN_WRITE)) in vfs_iocb_iter_write()
885 ret = rw_verify_area(WRITE, file, &iocb->ki_pos, tot_len); in vfs_iocb_iter_write()
889 ret = call_write_iter(file, iocb, iter); in vfs_iocb_iter_write()
891 fsnotify_modify(file); in vfs_iocb_iter_write()
897 ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos, in vfs_iter_write() argument
900 if (!file->f_op->write_iter) in vfs_iter_write()
902 return do_iter_write(file, iter, ppos, flags); in vfs_iter_write()
906 static ssize_t vfs_readv(struct file *file, const struct iovec __user *vec, in vfs_readv() argument
916 ret = do_iter_read(file, &iter, pos, flags); in vfs_readv()
923 static ssize_t vfs_writev(struct file *file, const struct iovec __user *vec, in vfs_writev() argument
933 file_start_write(file); in vfs_writev()
934 ret = do_iter_write(file, &iter, pos, flags); in vfs_writev()
935 file_end_write(file); in vfs_writev()
947 if (f.file) { in do_readv()
948 loff_t pos, *ppos = file_ppos(f.file); in do_readv()
953 ret = vfs_readv(f.file, vec, vlen, ppos, flags); in do_readv()
955 f.file->f_pos = pos; in do_readv()
971 if (f.file) { in do_writev()
972 loff_t pos, *ppos = file_ppos(f.file); in do_writev()
977 ret = vfs_writev(f.file, vec, vlen, ppos, flags); in do_writev()
979 f.file->f_pos = pos; in do_writev()
1005 if (f.file) { in do_preadv()
1007 if (f.file->f_mode & FMODE_PREAD) in do_preadv()
1008 ret = vfs_readv(f.file, vec, vlen, &pos, flags); in do_preadv()
1028 if (f.file) { in do_pwritev()
1030 if (f.file->f_mode & FMODE_PWRITE) in do_pwritev()
1031 ret = vfs_writev(f.file, vec, vlen, &pos, flags); in do_pwritev()
1196 if (!in.file) in do_sendfile()
1198 if (!(in.file->f_mode & FMODE_READ)) in do_sendfile()
1202 pos = in.file->f_pos; in do_sendfile()
1205 if (!(in.file->f_mode & FMODE_PREAD)) in do_sendfile()
1208 retval = rw_verify_area(READ, in.file, &pos, count); in do_sendfile()
1219 if (!out.file) in do_sendfile()
1221 if (!(out.file->f_mode & FMODE_WRITE)) in do_sendfile()
1223 in_inode = file_inode(in.file); in do_sendfile()
1224 out_inode = file_inode(out.file); in do_sendfile()
1225 out_pos = out.file->f_pos; in do_sendfile()
1226 retval = rw_verify_area(WRITE, out.file, &out_pos, count); in do_sendfile()
1248 if (in.file->f_flags & O_NONBLOCK) in do_sendfile()
1251 file_start_write(out.file); in do_sendfile()
1252 retval = do_splice_direct(in.file, &pos, out.file, &out_pos, count, fl); in do_sendfile()
1253 file_end_write(out.file); in do_sendfile()
1258 fsnotify_access(in.file); in do_sendfile()
1259 fsnotify_modify(out.file); in do_sendfile()
1260 out.file->f_pos = out_pos; in do_sendfile()
1264 in.file->f_pos = pos; in do_sendfile()
1377 ssize_t generic_copy_file_range(struct file *file_in, loff_t pos_in, in generic_copy_file_range()
1378 struct file *file_out, loff_t pos_out, in generic_copy_file_range()
1386 static ssize_t do_copy_file_range(struct file *file_in, loff_t pos_in, in do_copy_file_range()
1387 struct file *file_out, loff_t pos_out, in do_copy_file_range()
1415 static int generic_copy_file_checks(struct file *file_in, loff_t pos_in, in generic_copy_file_checks()
1416 struct file *file_out, loff_t pos_out, in generic_copy_file_checks()
1466 ssize_t vfs_copy_file_range(struct file *file_in, loff_t pos_in, in vfs_copy_file_range()
1467 struct file *file_out, loff_t pos_out, in vfs_copy_file_range()
1542 if (!f_in.file) in SYSCALL_DEFINE6()
1546 if (!f_out.file) in SYSCALL_DEFINE6()
1554 pos_in = f_in.file->f_pos; in SYSCALL_DEFINE6()
1561 pos_out = f_out.file->f_pos; in SYSCALL_DEFINE6()
1564 ret = vfs_copy_file_range(f_in.file, pos_in, f_out.file, pos_out, len, in SYSCALL_DEFINE6()
1574 f_in.file->f_pos = pos_in; in SYSCALL_DEFINE6()
1581 f_out.file->f_pos = pos_out; in SYSCALL_DEFINE6()
1598 int generic_write_check_limits(struct file *file, loff_t pos, loff_t *count) in generic_write_check_limits() argument
1600 struct inode *inode = file->f_mapping->host; in generic_write_check_limits()
1612 if (!(file->f_flags & O_LARGEFILE)) in generic_write_check_limits()
1632 struct file *file = iocb->ki_filp; in generic_write_checks() local
1633 struct inode *inode = file->f_mapping->host; in generic_write_checks()
1651 ret = generic_write_check_limits(file, iocb->ki_pos, &count); in generic_write_checks()
1664 int generic_file_rw_checks(struct file *file_in, struct file *file_out) in generic_file_rw_checks()