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explain_getresuid_or_die(3)Library Functions Manualexplain_getresuid_or_die(3)

NAME
       explain_getresuid_or_die	- get r/e/s user IDs and report	errors

SYNOPSIS
       #include	<libexplain/getresuid.h>
       void explain_getresuid_or_die(uid_t *ruid, uid_t	*euid, uid_t *suid);
       int explain_getresuid_on_error(uid_t *ruid, uid_t *euid,	uid_t *suid);

DESCRIPTION
       The  explain_getresuid_or_die function is used to call the getresuid(2)
       system call. On failure an explanation will be printed to  stderr,  ob-
       tained  from  the  explain_getresuid(3)	function, and then the process
       terminates by calling exit(EXIT_FAILURE).

       The explain_getresuid_on_error function is  used	 to  call  the	getre-
       suid(2)	system	call.  On  failure  an	explanation will be printed to
       stderr, obtained	from the explain_getresuid(3) function,	but still  re-
       turns to	the caller.

       ruid    The  ruid,  exactly  as to be passed to the getresuid(2)	system
	       call.

       euid    The euid, exactly as to be passed to  the  getresuid(2)	system
	       call.

       suid    The  suid,  exactly  as to be passed to the getresuid(2)	system
	       call.

RETURN VALUE
       The explain_getresuid_or_die function only returns on success, see  ge-
       tresuid(2)  for more information. On failure, prints an explanation and
       exits, it does not return.

       The explain_getresuid_on_error function always returns the value	return
       by the wrapped getresuid(2) system call.

EXAMPLE
       The explain_getresuid_or_die function is	intended to be used in a fash-
       ion similar to the following example:
	      explain_getresuid_or_die(ruid, euid, suid);

SEE ALSO
       getresuid(2)
	       get real, effective and saved user IDs

       explain_getresuid(3)
	       explain getresuid(2) errors

       exit(2) terminate the calling process

COPYRIGHT
       libexplain version 1.3
       Copyright (C) 2012 Peter	Miller

						   explain_getresuid_or_die(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT

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