Differential D52580 Diff 162256 lib/libc/gen/initgroups.c

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lib/libc/gen/initgroups.c

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	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.			* SUCH DAMAGE.
	*/			*/

	#include <sys/param.h>			#include <sys/param.h>

	#include "namespace.h"
	#include <err.h>
	#include "un-namespace.h"
	#include <errno.h>			#include <errno.h>
	#include <stdio.h>
	#include <stdlib.h>			#include <stdlib.h>
	#include <unistd.h>			#include <unistd.h>

	int			int
	initgroups(const char *uname, gid_t agroup)			initgroups(const char *uname, gid_t agroup)
	{			{
	int ngroups, ret;			int ngroups, ret;
	long ngroups_max;			long ngroups_max;
	gid_t *groups;			gid_t *groups;

	/*			/*
	* Provide space for one group more than possible to allow			* Provide space for one group more than possible to allow
	* setgroups to fail and set errno.			* setgroups to fail and set errno.
	*/			*/
	ngroups_max = sysconf(_SC_NGROUPS_MAX) + 2;			ngroups_max = sysconf(_SC_NGROUPS_MAX) + 2;
	if ((groups = malloc(sizeof(groups) ngroups_max)) == NULL)			groups = malloc(sizeof(groups) ngroups_max);
	return (ENOMEM);			if (groups == NULL)
				return (-1); /* malloc() set 'errno'. */

	ngroups = (int)ngroups_max;			ngroups = (int)ngroups_max;
	getgrouplist(uname, agroup, groups, &ngroups);			getgrouplist(uname, agroup, groups, &ngroups);
	ret = setgroups(ngroups, groups);			ret = setgroups(ngroups, groups);
	free(groups);			free(groups);
	return (ret);			return (ret); /* setgroups() set 'errno'. */
	}			}