explain_lseek_or_die - reposition file offset and report errors
#include <libexplain/lseek.h>
long long explain_lseek_or_die(int fildes, long long offset, int whence);
The
explain_lseek_or_die function is used to call the
lseek(2)
system call. On failure an explanation will be printed to
stderr,
obtained from
explain_lseek(3), and then the process terminates by
calling exit(EXIT_FAILURE).
This function is intended to be used in a fashion similar to the following
example:
long long result = explain_lseek_or_die(fildes, offset, whence);
- fildes
- The fildes, exactly as to be passed to the lseek(2) system
call.
- offset
- The offset, exactly as to be passed to the lseek(2) system
call.
- whence
- The whence, exactly as to be passed to the lseek(2) system
call.
- Returns:
- On successful, returns the resulting offset location as measured in bytes
from the beginning of the file. On failure, prints an explanation and
exits.
- lseek(2)
- reposition file offset
- explain_lseek(3)
- explain lseek(2) errors
- exit(2)
- terminate the calling process
libexplain version 1.3
Copyright (C) 2008 Peter Miller