LSEEK(2) LSEEK(2)
NAME
lseek, llseek - seek, move read/write pointer
SYNOPSIS
long lseek(fildes, offset, whence)
long offset;
Long llseek(fildes, offset, whence)
Long offset;
DESCRIPTION
Lseek and llseek set the file pointer for the file associ-
ated with fildes as follows:
If whence is 0, the pointer is set to offset bytes.
If whence is 1, the pointer is set to its current loca-
tion plus offset.
If whence is 2, the pointer is set to the size of the
file plus offset.
The new file pointer value is returned.
Type Long is a 64-bit quantity.
Seeking far beyond the end of a file, then writing, creates
a gap or `hole,' which occupies no physical space and reads
as zeros.
SEE ALSO
open(2), fseek(3)
DIAGNOSTICS
EBADF, ESPIPE
BUGS
Lseek doesn't affect some special files.