Libinfo-222.4.9.tar.gz

[apple/libinfo.git] / gen.subproj / initgroups.c

diff --git a/gen.subproj/initgroups.c b/gen.subproj/initgroups.c
index 455c363c2124261a99a5baadfd7c88076cb5ad33..0ca077a509575b4814e1572b3e220896772c05c1 100644 (file)
--- a/gen.subproj/initgroups.c
+++ b/gen.subproj/initgroups.c
@@ -59,8 +59,12 @@ static char sccsid[] = "@(#)initgroups.c     8.1 (Berkeley) 6/4/93";
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/param.h>
+#include <sys/syscall.h>
 
 #include <stdio.h>
+#include <unistd.h>
+#include <err.h>
+#include <pwd.h>
 
 int
 initgroups(uname, agroup)
@@ -68,14 +72,19 @@ initgroups(uname, agroup)
        int agroup;
 {
        int groups[NGROUPS], ngroups;
+       struct passwd *pw;
 
+       /* get the UID for this user */
+       if ((pw = getpwnam(uname)) == NULL)
+               return(-1);
+
+       /* fetch the initial (advisory) group list */
        ngroups = NGROUPS;
-       if (getgrouplist(uname, agroup, groups, &ngroups) < 0)
-               warnx("%s is in too many groups, using first %d",
-                   uname, ngroups);
-       if (setgroups(ngroups, groups) < 0) {
-               warn("setgroups");
+       getgrouplist(uname, agroup, groups, &ngroups);
+       if (ngroups == 0)
+               return(-1);
+
+       if (syscall(SYS_initgroups, ngroups, groups, pw->pw_uid) < 0)
                return (-1);
-       }
        return (0);
 }