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explain_setregid_or_die(3)  Library Functions Manual  explain_setregid_or_die(3)

NAME
     explain_setregid_or_die - set real and/or effective group ID and report er-
     rors

SYNOPSIS
     #include <libexplain/setregid.h>
     void explain_setregid_or_die(gid_t rgid, gid_t egid);
     int explain_setregid_on_error(gid_t rgid, gid_t egid);

DESCRIPTION
     The explain_setregid_or_die function is used to call the setregid(2) system
     call.  On	failure  an explanation will be printed to stderr, obtained from
     the explain_setregid(3) function, and then the process terminates by  call-
     ing exit(EXIT_FAILURE).

     The explain_setregid_on_error function is used to call the setregid(2) sys-
     tem  call.  On  failure  an explanation will be printed to stderr, obtained
     from the explain_setregid(3) function, but still returns to the caller.

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

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

RETURN VALUE
     The explain_setregid_or_die function  only  returns  on  success,	see  se-
     tregid(2)	for  more information. On failure, prints an explanation and ex-
     its, it does not return.

     The explain_setregid_on_error function always returns the value  return  by
     the wrapped setregid(2) system call.

EXAMPLE
     The  explain_setregid_or_die  function  is intended to be used in a fashion
     similar to the following example:
	    explain_setregid_or_die(rgid, egid);

SEE ALSO
     setregid(2)
	     set real and/or effective group ID

     explain_setregid(3)
	     explain setregid(2) errors

     exit(2)
	     terminate the calling process

COPYRIGHT
     libexplain version 1.3
     Copyright (C) 2012 Peter Miller

						      explain_setregid_or_die(3)

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