Lines Matching refs:file
37 static inline bool unsigned_offsets(struct file *file) in unsigned_offsets() argument
39 return file->f_mode & FMODE_UNSIGNED_OFFSET; in unsigned_offsets()
54 loff_t vfs_setpos(struct file *file, loff_t offset, loff_t maxsize) in vfs_setpos() argument
56 if (offset < 0 && !unsigned_offsets(file)) in vfs_setpos()
61 if (offset != file->f_pos) { in vfs_setpos()
62 file->f_pos = offset; in vfs_setpos()
63 file->f_version = 0; in vfs_setpos()
86 generic_file_llseek_size(struct file *file, loff_t offset, int whence, in generic_file_llseek_size() argument
101 return file->f_pos; in generic_file_llseek_size()
107 spin_lock(&file->f_lock); in generic_file_llseek_size()
108 offset = vfs_setpos(file, file->f_pos + offset, maxsize); in generic_file_llseek_size()
109 spin_unlock(&file->f_lock); in generic_file_llseek_size()
130 return vfs_setpos(file, offset, maxsize); in generic_file_llseek_size()
144 loff_t generic_file_llseek(struct file *file, loff_t offset, int whence) in generic_file_llseek() argument
146 struct inode *inode = file->f_mapping->host; in generic_file_llseek()
148 return generic_file_llseek_size(file, offset, whence, in generic_file_llseek()
162 loff_t fixed_size_llseek(struct file *file, loff_t offset, int whence, loff_t size) in fixed_size_llseek() argument
166 return generic_file_llseek_size(file, offset, whence, in fixed_size_llseek()
181 loff_t no_seek_end_llseek(struct file *file, loff_t offset, int whence) in no_seek_end_llseek() argument
185 return generic_file_llseek_size(file, offset, whence, in no_seek_end_llseek()
201 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
205 return generic_file_llseek_size(file, offset, whence, in no_seek_end_llseek_size()
224 loff_t noop_llseek(struct file *file, loff_t offset, int whence) in noop_llseek() argument
226 return file->f_pos; in noop_llseek()
230 loff_t no_llseek(struct file *file, loff_t offset, int whence) in no_llseek() argument
236 loff_t default_llseek(struct file *file, loff_t offset, int whence) in default_llseek() argument
238 struct inode *inode = file_inode(file); in default_llseek()
248 retval = file->f_pos; in default_llseek()
251 offset += file->f_pos; in default_llseek()
278 if (offset >= 0 || unsigned_offsets(file)) { in default_llseek()
279 if (offset != file->f_pos) { in default_llseek()
280 file->f_pos = offset; in default_llseek()
281 file->f_version = 0; in default_llseek()
291 loff_t vfs_llseek(struct file *file, loff_t offset, int whence) in vfs_llseek() argument
293 loff_t (*fn)(struct file *, loff_t, int); in vfs_llseek()
296 if (file->f_mode & FMODE_LSEEK) { in vfs_llseek()
297 if (file->f_op->llseek) in vfs_llseek()
298 fn = file->f_op->llseek; in vfs_llseek()
300 return fn(file, offset, whence); in vfs_llseek()
308 if (!f.file) in ksys_lseek()
313 loff_t res = vfs_llseek(f.file, offset, whence); in ksys_lseek()
344 if (!f.file) in SYSCALL_DEFINE5()
351 offset = vfs_llseek(f.file, ((loff_t) offset_high << 32) | offset_low, in SYSCALL_DEFINE5()
366 int rw_verify_area(int read_write, struct file *file, const loff_t *ppos, size_t count) in rw_verify_area() argument
375 if (!unsigned_offsets(file)) in rw_verify_area()
380 if (!unsigned_offsets(file)) in rw_verify_area()
385 return security_file_permission(file, in rw_verify_area()
389 static ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos) in new_sync_read()
407 static int warn_unsupported(struct file *file, const char *op) in warn_unsupported() argument
411 op, file, current->pid, current->comm); in warn_unsupported()
415 ssize_t __kernel_read(struct file *file, void *buf, size_t count, loff_t *pos) in __kernel_read() argument
425 if (WARN_ON_ONCE(!(file->f_mode & FMODE_READ))) in __kernel_read()
427 if (!(file->f_mode & FMODE_CAN_READ)) in __kernel_read()
433 if (unlikely(!file->f_op->read_iter || file->f_op->read)) in __kernel_read()
434 return warn_unsupported(file, "read"); in __kernel_read()
436 init_sync_kiocb(&kiocb, file); in __kernel_read()
439 ret = file->f_op->read_iter(&kiocb, &iter); in __kernel_read()
443 fsnotify_access(file); in __kernel_read()
450 ssize_t kernel_read(struct file *file, void *buf, size_t count, loff_t *pos) in kernel_read() argument
454 ret = rw_verify_area(READ, file, pos, count); in kernel_read()
457 return __kernel_read(file, buf, count, pos); in kernel_read()
461 ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos) in vfs_read() argument
465 if (!(file->f_mode & FMODE_READ)) in vfs_read()
467 if (!(file->f_mode & FMODE_CAN_READ)) in vfs_read()
472 ret = rw_verify_area(READ, file, pos, count); in vfs_read()
478 if (file->f_op->read) in vfs_read()
479 ret = file->f_op->read(file, buf, count, pos); in vfs_read()
480 else if (file->f_op->read_iter) in vfs_read()
481 ret = new_sync_read(file, buf, count, pos); in vfs_read()
485 fsnotify_access(file); in vfs_read()
492 static ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos) in new_sync_write()
511 ssize_t __kernel_write(struct file *file, const void *buf, size_t count, loff_t *pos) in __kernel_write() argument
521 if (WARN_ON_ONCE(!(file->f_mode & FMODE_WRITE))) in __kernel_write()
523 if (!(file->f_mode & FMODE_CAN_WRITE)) in __kernel_write()
529 if (unlikely(!file->f_op->write_iter || file->f_op->write)) in __kernel_write()
530 return warn_unsupported(file, "write"); in __kernel_write()
532 init_sync_kiocb(&kiocb, file); in __kernel_write()
535 ret = file->f_op->write_iter(&kiocb, &iter); in __kernel_write()
539 fsnotify_modify(file); in __kernel_write()
554 ssize_t kernel_write(struct file *file, const void *buf, size_t count, in kernel_write() argument
559 ret = rw_verify_area(WRITE, file, pos, count); in kernel_write()
563 file_start_write(file); in kernel_write()
564 ret = __kernel_write(file, buf, count, pos); in kernel_write()
565 file_end_write(file); in kernel_write()
570 ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_t *pos) in vfs_write() argument
574 if (!(file->f_mode & FMODE_WRITE)) in vfs_write()
576 if (!(file->f_mode & FMODE_CAN_WRITE)) in vfs_write()
581 ret = rw_verify_area(WRITE, file, pos, count); in vfs_write()
586 file_start_write(file); in vfs_write()
587 if (file->f_op->write) in vfs_write()
588 ret = file->f_op->write(file, buf, count, pos); in vfs_write()
589 else if (file->f_op->write_iter) in vfs_write()
590 ret = new_sync_write(file, buf, count, pos); in vfs_write()
594 fsnotify_modify(file); in vfs_write()
598 file_end_write(file); in vfs_write()
603 static inline loff_t *file_ppos(struct file *file) in file_ppos() argument
605 return file->f_mode & FMODE_STREAM ? NULL : &file->f_pos; in file_ppos()
613 if (f.file) { in ksys_read()
614 loff_t pos, *ppos = file_ppos(f.file); in ksys_read()
619 ret = vfs_read(f.file, buf, count, ppos); in ksys_read()
621 f.file->f_pos = pos; in ksys_read()
637 if (f.file) { in ksys_write()
638 loff_t pos, *ppos = file_ppos(f.file); in ksys_write()
643 ret = vfs_write(f.file, buf, count, ppos); in ksys_write()
645 f.file->f_pos = pos; in ksys_write()
668 if (f.file) { in ksys_pread64()
670 if (f.file->f_mode & FMODE_PREAD) in ksys_pread64()
671 ret = vfs_read(f.file, buf, count, &pos); in ksys_pread64()
694 if (f.file) { in ksys_pwrite64()
696 if (f.file->f_mode & FMODE_PWRITE) in ksys_pwrite64()
697 ret = vfs_write(f.file, buf, count, &pos); in ksys_pwrite64()
710 static ssize_t do_iter_readv_writev(struct file *filp, struct iov_iter *iter, in do_iter_readv_writev()
733 static ssize_t do_loop_readv_writev(struct file *filp, struct iov_iter *iter, in do_loop_readv_writev()
767 static ssize_t do_iter_read(struct file *file, struct iov_iter *iter, in do_iter_read() argument
773 if (!(file->f_mode & FMODE_READ)) in do_iter_read()
775 if (!(file->f_mode & FMODE_CAN_READ)) in do_iter_read()
781 ret = rw_verify_area(READ, file, pos, tot_len); in do_iter_read()
785 if (file->f_op->read_iter) in do_iter_read()
786 ret = do_iter_readv_writev(file, iter, pos, READ, flags); in do_iter_read()
788 ret = do_loop_readv_writev(file, iter, pos, READ, flags); in do_iter_read()
791 fsnotify_access(file); in do_iter_read()
795 ssize_t vfs_iocb_iter_read(struct file *file, struct kiocb *iocb, in vfs_iocb_iter_read() argument
801 if (!file->f_op->read_iter) in vfs_iocb_iter_read()
803 if (!(file->f_mode & FMODE_READ)) in vfs_iocb_iter_read()
805 if (!(file->f_mode & FMODE_CAN_READ)) in vfs_iocb_iter_read()
811 ret = rw_verify_area(READ, file, &iocb->ki_pos, tot_len); in vfs_iocb_iter_read()
815 ret = call_read_iter(file, iocb, iter); in vfs_iocb_iter_read()
818 fsnotify_access(file); in vfs_iocb_iter_read()
823 ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos, in vfs_iter_read() argument
826 if (!file->f_op->read_iter) in vfs_iter_read()
828 return do_iter_read(file, iter, ppos, flags); in vfs_iter_read()
832 static ssize_t do_iter_write(struct file *file, struct iov_iter *iter, in do_iter_write() argument
838 if (!(file->f_mode & FMODE_WRITE)) in do_iter_write()
840 if (!(file->f_mode & FMODE_CAN_WRITE)) in do_iter_write()
846 ret = rw_verify_area(WRITE, file, pos, tot_len); in do_iter_write()
850 if (file->f_op->write_iter) in do_iter_write()
851 ret = do_iter_readv_writev(file, iter, pos, WRITE, flags); in do_iter_write()
853 ret = do_loop_readv_writev(file, iter, pos, WRITE, flags); in do_iter_write()
855 fsnotify_modify(file); in do_iter_write()
859 ssize_t vfs_iocb_iter_write(struct file *file, struct kiocb *iocb, in vfs_iocb_iter_write() argument
865 if (!file->f_op->write_iter) in vfs_iocb_iter_write()
867 if (!(file->f_mode & FMODE_WRITE)) in vfs_iocb_iter_write()
869 if (!(file->f_mode & FMODE_CAN_WRITE)) in vfs_iocb_iter_write()
875 ret = rw_verify_area(WRITE, file, &iocb->ki_pos, tot_len); in vfs_iocb_iter_write()
879 ret = call_write_iter(file, iocb, iter); in vfs_iocb_iter_write()
881 fsnotify_modify(file); in vfs_iocb_iter_write()
887 ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos, in vfs_iter_write() argument
890 if (!file->f_op->write_iter) in vfs_iter_write()
892 return do_iter_write(file, iter, ppos, flags); in vfs_iter_write()
896 static ssize_t vfs_readv(struct file *file, const struct iovec __user *vec, in vfs_readv() argument
906 ret = do_iter_read(file, &iter, pos, flags); in vfs_readv()
913 static ssize_t vfs_writev(struct file *file, const struct iovec __user *vec, in vfs_writev() argument
923 file_start_write(file); in vfs_writev()
924 ret = do_iter_write(file, &iter, pos, flags); in vfs_writev()
925 file_end_write(file); in vfs_writev()
937 if (f.file) { in do_readv()
938 loff_t pos, *ppos = file_ppos(f.file); in do_readv()
943 ret = vfs_readv(f.file, vec, vlen, ppos, flags); in do_readv()
945 f.file->f_pos = pos; in do_readv()
961 if (f.file) { in do_writev()
962 loff_t pos, *ppos = file_ppos(f.file); in do_writev()
967 ret = vfs_writev(f.file, vec, vlen, ppos, flags); in do_writev()
969 f.file->f_pos = pos; in do_writev()
995 if (f.file) { in do_preadv()
997 if (f.file->f_mode & FMODE_PREAD) in do_preadv()
998 ret = vfs_readv(f.file, vec, vlen, &pos, flags); in do_preadv()
1018 if (f.file) { in do_pwritev()
1020 if (f.file->f_mode & FMODE_PWRITE) in do_pwritev()
1021 ret = vfs_writev(f.file, vec, vlen, &pos, flags); in do_pwritev()
1187 if (!in.file) in do_sendfile()
1189 if (!(in.file->f_mode & FMODE_READ)) in do_sendfile()
1193 pos = in.file->f_pos; in do_sendfile()
1196 if (!(in.file->f_mode & FMODE_PREAD)) in do_sendfile()
1199 retval = rw_verify_area(READ, in.file, &pos, count); in do_sendfile()
1210 if (!out.file) in do_sendfile()
1212 if (!(out.file->f_mode & FMODE_WRITE)) in do_sendfile()
1214 in_inode = file_inode(in.file); in do_sendfile()
1215 out_inode = file_inode(out.file); in do_sendfile()
1216 out_pos = out.file->f_pos; in do_sendfile()
1236 if (in.file->f_flags & O_NONBLOCK) in do_sendfile()
1239 opipe = get_pipe_info(out.file, true); in do_sendfile()
1241 retval = rw_verify_area(WRITE, out.file, &out_pos, count); in do_sendfile()
1244 file_start_write(out.file); in do_sendfile()
1245 retval = do_splice_direct(in.file, &pos, out.file, &out_pos, in do_sendfile()
1247 file_end_write(out.file); in do_sendfile()
1249 retval = splice_file_to_pipe(in.file, opipe, &pos, count, fl); in do_sendfile()
1255 fsnotify_access(in.file); in do_sendfile()
1256 fsnotify_modify(out.file); in do_sendfile()
1257 out.file->f_pos = out_pos; in do_sendfile()
1261 in.file->f_pos = pos; in do_sendfile()
1374 ssize_t generic_copy_file_range(struct file *file_in, loff_t pos_in, in generic_copy_file_range()
1375 struct file *file_out, loff_t pos_out, in generic_copy_file_range()
1383 static ssize_t do_copy_file_range(struct file *file_in, loff_t pos_in, in do_copy_file_range()
1384 struct file *file_out, loff_t pos_out, in do_copy_file_range()
1412 static int generic_copy_file_checks(struct file *file_in, loff_t pos_in, in generic_copy_file_checks()
1413 struct file *file_out, loff_t pos_out, in generic_copy_file_checks()
1463 ssize_t vfs_copy_file_range(struct file *file_in, loff_t pos_in, in vfs_copy_file_range()
1464 struct file *file_out, loff_t pos_out, in vfs_copy_file_range()
1539 if (!f_in.file) in SYSCALL_DEFINE6()
1543 if (!f_out.file) in SYSCALL_DEFINE6()
1551 pos_in = f_in.file->f_pos; in SYSCALL_DEFINE6()
1558 pos_out = f_out.file->f_pos; in SYSCALL_DEFINE6()
1561 ret = vfs_copy_file_range(f_in.file, pos_in, f_out.file, pos_out, len, in SYSCALL_DEFINE6()
1571 f_in.file->f_pos = pos_in; in SYSCALL_DEFINE6()
1578 f_out.file->f_pos = pos_out; in SYSCALL_DEFINE6()
1595 int generic_write_check_limits(struct file *file, loff_t pos, loff_t *count) in generic_write_check_limits() argument
1597 struct inode *inode = file->f_mapping->host; in generic_write_check_limits()
1609 if (!(file->f_flags & O_LARGEFILE)) in generic_write_check_limits()
1629 struct file *file = iocb->ki_filp; in generic_write_checks() local
1630 struct inode *inode = file->f_mapping->host; in generic_write_checks()
1648 ret = generic_write_check_limits(file, iocb->ki_pos, &count); in generic_write_checks()
1661 int generic_file_rw_checks(struct file *file_in, struct file *file_out) in generic_file_rw_checks()