osf1 man page for sia_get_groups

sia_get_groups(3)					     Library Functions Manual						 sia_get_groups(3)

NAME
       sia_get_groups  - retrieve user's group information for SIA (Security Integration Architecture)

LIBRARY
       Standard C library (libc.so and libc.a)

SYNOPSIS
       #include <sia.h>
       #include <siad.h>

       int sia_get_groups( const char *username gid_t basegid gid_t *buffer int *ngroups)

PARAMETERS
       The  name of the user whose group information should be written to the buffer array. This parameter is read only.  If not ((gid_t)-1), this
       GID will appear in the buffer array in addition to any other groups found for this user. This is normally used to pass the user's GID  from
       the  password information, since the GID is not necessarily listed in the group information obtained with getgrent().  The array into which
       this routine writes the accumulated GIDs for the specified user.  On input, this parameter points to an integer that represents the maximum
       number  of  entries  allowed  for the buffer array. When this routine returns, it updates this value to be the number of entries which were
       found. On failure, the value is indeterminate.

DESCRIPTION
       The sia_get_groups() routine is called to obtain a user's group array.

EXAMPLES
       A typical call to obtain a user's group array follows:	   #include <sia.h>
	       int ngroups;
	       gid_t groups[NGROUPS];
	       struct passwd *pw;
	       extern char *username;

	       pw = getpwnam(username);
	       if (pw == NULL)
		       return 0;
	       ngroups = NGROUPS;
	       if (sia_get_groups(username, pw->pw_gid, groups, &ngroups)
		   != SIASUCCESS)
		       return 0;

	       /* process group array here */

RETURN VALUES
       This routine returns SIA_SUCCESS if all the incoming arguments are correct (non-null pointers, non-null username, and *ngroups must be pos-
       itive), and if none of the configured mechanism functions for group processing returned a fatal error.  Finding more than *ngroups GIDs for
       the user is one such fatal error, and is the only one defined for all mechanisms.  If a fatal error is encountered in one of the configured
       mechanisms,  this  routine  returns  SIAFAIL|SIASTOP.   If  there are parameter errors, or if a getgrent_r call fails, this routine returns
       SIAFAIL.

ERRORS
       While errno will usually be propagated from whatever other calls failed, this routine will return with errno explicitly set for the follow-
       ing  conditions: One of the pointer arguments was NULL.	*username was 0, or *ngroups was not positive.	Thread context failure while scan-
       ning for groups.

FILES
       /etc/sia/matrix.conf

RELATED INFORMATION
       getgrent(3), matrix.conf(4), initgroups(3), siad_get_groups(3) _sia_isagroup(3)

       Security delim off

																 sia_get_groups(3)