|LSEEK64(3)||Linux Programmer's Manual||LSEEK64(3)|
NAMElseek64 - reposition 64-bit read/write file offset
SYNOPSIS#define _LARGEFILE64_SOURCE /* See feature_test_macros(7) */
DESCRIPTIONThe lseek(2) family of functions reposition the offset of the open file associated with the file descriptor fd to offset bytes relative to the start, current position, or end of the file, when whence has the value SEEK_SET, SEEK_CUR, or SEEK_END, respectively.
For more details, return value, and errors, see lseek(2).
Four interfaces are available: lseek(2), lseek64(), llseek(2), and the raw system call _llseek(2).
off_t lseek(int fd , off_t offset , int whence );
#define _FILE_OFFSET_BITS 64
in which case it is a 64-bit signed type.
off64_t lseek64(int fd , off64_t offset , int whence );
The function lseek64() is available since glibc 2.1, and is defined to be an alias for llseek().
loff_t llseek(int fd , loff_t offset , int whence );
"the `llseek´ function may be dangerous; use `lseek64´ instead."
_llseekAll the above functions are implemented in terms of this system call. The prototype is:
int _llseek(int fd , off_t offset_hi , off_t offset_lo ,
loff_t * result , int whence );
SEE ALSOllseek(2), lseek(2)
COLOPHONThis page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.