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explain_getresgid_or_die(3)Library Functions Manualexplain_getresgid_or_die(3)

NAME
       explain_getresgid_or_die	- get r/e/s group IDs and report errors

SYNOPSIS
       #include	<libexplain/getresgid.h>
       void explain_getresgid_or_die(gid_t *rgid, gid_t	*egid, gid_t *sgid);
       int explain_getresgid_on_error(gid_t *rgid, gid_t *egid,	gid_t *sgid);

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

       The explain_getresgid_on_error function is used	to  call  the  getres-
       gid(2)  system  call.  On  failure  an  explanation  will be printed to
       stderr, obtained	from the explain_getresgid(3) function,	but still  re-
       turns to	the caller.

       rgid    The  rgid,  exactly  as to be passed to the getresgid(2)	system
	       call.

       egid    The egid, exactly as to be passed to  the  getresgid(2)	system
	       call.

       sgid    The  sgid,  exactly  as to be passed to the getresgid(2)	system
	       call.

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

       The explain_getresgid_on_error function always returns the value	return
       by the wrapped getresgid(2) system call.

EXAMPLE
       The explain_getresgid_or_die function is	intended to be used in a fash-
       ion similar to the following example:
	      explain_getresgid_or_die(rgid, egid, sgid);

SEE ALSO
       getresgid(2)
	       get real, effective and saved group IDs

       explain_getresgid(3)
	       explain getresgid(2) errors

       exit(2) terminate the calling process

COPYRIGHT
       libexplain version 1.3
       Copyright (C) 2012 Peter	Miller

						   explain_getresgid_or_die(3)

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

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