NAME¶
explain_fsetpos_or_die - reposition a stream and report errors
SYNOPSIS¶
#include <libexplain/fsetpos.h>
void explain_fsetpos_or_die(FILE *fp, fpos_t *pos);
int explain_fsetpos_on_error(FILE *fp, fpos_t *pos);
DESCRIPTION¶
The
explain_fsetpos_or_die function is used to call the
fsetpos(3)
system call. On failure an explanation will be printed to
stderr,
obtained from the
explain_fsetpos(3) function, and then the process
terminates by calling exit(EXIT_FAILURE).
The
explain_fsetpos_on_error function is used to call the
fsetpos(3) system call. On failure an explanation will be printed to
stderr, obtained from the
explain_fsetpos(3) function, but still
returns to the caller.
- fp
- The fp, exactly as to be passed to the fsetpos(3)
system call.
- pos
- The pos, exactly as to be passed to the fsetpos(3)
system call.
RETURN VALUE¶
The
explain_fsetpos_or_die function only returns on success, see
fsetpos(3) for more information. On failure, prints an explanation and
exits, it does not return.
The
explain_fsetpos_on_error function always returns the value return by
the wrapped
fsetpos(3) system call.
EXAMPLE¶
The
explain_fsetpos_or_die function is intended to be used in a fashion
similar to the following example:
explain_fsetpos_or_die(fp, pos);
SEE ALSO¶
- fsetpos(3)
- reposition a stream
- explain_fsetpos(3)
- explain fsetpos(3) errors
- exit(2)
- terminate the calling process
COPYRIGHT¶
libexplain version 0.52
Copyright (C) 2010 Peter Miller