449 int rw_verify_area(int read_write, struct file *file, const loff_t *ppos, size_t count)  in rw_verify_area()  argument
457 	if (ppos) {  in rw_verify_area()
458 		loff_t pos = *ppos;  in rw_verify_area()
475 	return fsnotify_file_area_perm(file, mask, ppos, count);  in rw_verify_area()
479 static ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos)  in new_sync_read()  argument
486 	kiocb.ki_pos = (ppos ? *ppos : 0);  in new_sync_read()
491 	if (ppos)  in new_sync_read()
492 		*ppos = kiocb.ki_pos;  in new_sync_read()
581 static ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos)  in new_sync_write()  argument
588 	kiocb.ki_pos = (ppos ? *ppos : 0);  in new_sync_write()
593 	if (ret > 0 && ppos)  in new_sync_write()
594 		*ppos = kiocb.ki_pos;  in new_sync_write()
708 		loff_t pos, *ppos = file_ppos(fd_file(f));  in ksys_read()  local
709 		if (ppos) {  in ksys_read()
710 			pos = *ppos;  in ksys_read()
711 			ppos = &pos;  in ksys_read()
713 		ret = vfs_read(fd_file(f), buf, count, ppos);  in ksys_read()
714 		if (ret >= 0 && ppos)  in ksys_read()
731 		loff_t pos, *ppos = file_ppos(fd_file(f));  in ksys_write()  local
732 		if (ppos) {  in ksys_write()
733 			pos = *ppos;  in ksys_write()
734 			ppos = &pos;  in ksys_write()
736 		ret = vfs_write(fd_file(f), buf, count, ppos);  in ksys_write()
737 		if (ret >= 0 && ppos)  in ksys_write()
811 		loff_t *ppos, int type, rwf_t flags)  in do_iter_readv_writev()  argument
820 	kiocb.ki_pos = (ppos ? *ppos : 0);  in do_iter_readv_writev()
827 	if (ppos)  in do_iter_readv_writev()
828 		*ppos = kiocb.ki_pos;  in do_iter_readv_writev()
834 		loff_t *ppos, int type, rwf_t flags)  in do_loop_readv_writev()  argument
846 						iter_iov_len(iter), ppos);  in do_loop_readv_writev()
849 						iter_iov_len(iter), ppos);  in do_loop_readv_writev()
894 ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos,  in vfs_iter_read()  argument
910 	ret = rw_verify_area(READ, file, ppos, tot_len);  in vfs_iter_read()
914 	ret = do_iter_readv_writev(file, iter, ppos, READ, flags);  in vfs_iter_read()
957 ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos,  in vfs_iter_write()  argument
974 	ret = rw_verify_area(WRITE, file, ppos, tot_len);  in vfs_iter_write()
979 	ret = do_iter_readv_writev(file, iter, ppos, WRITE, flags);  in vfs_iter_write()
1073 		loff_t pos, *ppos = file_ppos(fd_file(f));  in do_readv()  local
1074 		if (ppos) {  in do_readv()
1075 			pos = *ppos;  in do_readv()
1076 			ppos = &pos;  in do_readv()
1078 		ret = vfs_readv(fd_file(f), vec, vlen, ppos, flags);  in do_readv()
1079 		if (ret >= 0 && ppos)  in do_readv()
1096 		loff_t pos, *ppos = file_ppos(fd_file(f));  in do_writev()  local
1097 		if (ppos) {  in do_writev()
1098 			pos = *ppos;  in do_writev()
1099 			ppos = &pos;  in do_writev()
1101 		ret = vfs_writev(fd_file(f), vec, vlen, ppos, flags);  in do_writev()
1102 		if (ret >= 0 && ppos)  in do_writev()
1300 static ssize_t do_sendfile(int out_fd, int in_fd, loff_t *ppos,  in do_sendfile()  argument
1318 	if (!ppos) {  in do_sendfile()
1321 		pos = *ppos;  in do_sendfile()
1383 		if (ppos)  in do_sendfile()
1384 			*ppos = pos;  in do_sendfile()