NAME

explain_fseeko_or_die - seek to or report file position and report errors

SYNOPSIS

#include <libexplain/fseeko.h>

void explain_fseeko_or_die(FILE *fp, off_t offset, int whence);
int explain_fseeko_on_error(FILE *fp, off_t offset, int whence);

DESCRIPTION

The explain_fseeko_or_die function is used to call the fseeko(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_fseeko(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

The explain_fseeko_on_error function is used to call the fseeko(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_fseeko(3) function, but still returns to the caller.

fp: The fp, exactly as to be passed to the fseeko(3) system call.
offset: The offset, exactly as to be passed to the fseeko(3) system call.
whence: The whence, exactly as to be passed to the fseeko(3) system call.

RETURN VALUE

The explain_fseeko_or_die function only returns on success, see fseeko(3) for more information. On failure, prints an explanation and exits, it does not return.

The explain_fseeko_on_error function always returns the value return by the wrapped fseeko(3) system call.

EXAMPLE

The explain_fseeko_or_die function is intended to be used in a fashion similar to the following example:

explain_fseeko_or_die(fp, offset, whence);

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

EXAMPLE

SEE ALSO

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