fseeko, ftello — seek to or report file position
#include <stdio.h>
int
fseeko( |
FILE *stream, |
| off_t offset, | |
int whence); |
off_t
ftello( |
FILE *stream); |
The fseeko() and
ftello() functions are
identical to fseek(3) and ftell(3) (see fseek(3)), respectively,
except that the offset argument of fseeko() and the return value of
ftello() is of type
off_t instead of long.
On many architectures both off_t and long are 32-bit types, but compilation with
#define _FILE_OFFSET_BITS 64
will turn off_t into a 64-bit type.
On successful completion, fseeko() returns 0, while ftello() returns the current offset.
Otherwise, −1 is returned and errno is set to indicate the error.
These functions are found on System V-like systems. They are not present in libc4, libc5, glibc 2.0 but are available since glibc 2.1.
This page is part of release 3.33 of the Linux man-pages project. A
description of the project, and information about reporting
bugs, can be found at http://man7.org/linux/man-pages/.
|
Copyright 2001 Andries Brouwer <aebcwi.nl>. Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. |