2.11BSD#431 - /usr/man/cat2/getgroups.0

GETGROUPS(2)	    UNIX Programmer's Manual	     GETGROUPS(2)


NAME
     getgroups - get group access list

SYNOPSIS
     #include <sys/param.h>

     ngroups = getgroups(gidsetlen, gidset)
     int ngroups, gidsetlen, *gidset;

DESCRIPTION
     Getgroups gets the current group access list of the user
     process and stores it in the array gidset.  The parameter
     gidsetlen indicates the number of entries that may be placed
     in gidset.  Getgroups returns the actual number of groups
     returned in gidset.  No more than NGROUPS, as defined in
     <sys/param.h>, will ever be returned.

RETURN VALUE
     A successful call returns the number of groups in the group
     set.  A value of -1 indicates that an error occurred, and
     the error code is stored in the global variable errno.

ERRORS
     The possible errors for getgroup are:

     [EINVAL]	    The argument gidsetlen is smaller than the
		    number of groups in the group set.

     [EFAULT]	    The argument gidset specifies an invalid
		    address.

SEE ALSO
     setgroups(2), initgroups(3X)

BUGS
     The gidset array should be of type gid_t, but remains
     integer for compatibility with earlier systems.


Printed 11/26/99	  May 13, 1986				1