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Man Pages


Manual Reference Pages  -  EXPLAIN_FSEEKO_OR_DIE (3)

NAME

explain_fseeko_or_die - seek to or report file position and report errors
"seek to or report file position and report errors"

CONTENTS

Synopsis
Description
Return Value
Example
See Also
Copyright

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

The B]explain_fseeko_on_error function is used to call the I]fseeko(3) system call. On failure an explanation will be printed to I]stderr, obtained from the I]explain_fseeko(3) function, but still returns to the caller.
I]fp The fp, exactly as to be passed to the I]fseeko(3) system call.
I]offset The offset, exactly as to be passed to the I]fseeko(3) system call.
I]whence The whence, exactly as to be passed to the I]fseeko(3) system call.

RETURN VALUE

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

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

EXAMPLE

The B]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);

SEE ALSO

I]fseeko(3)
  seek to or report file position
I]explain_fseeko(3)
  explain I]fseeko(3) errors
I]exit(2) terminate the calling process

COPYRIGHT

libexplain version 1.3
Copyright © 2013 Peter Miller
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