From 8daa83a594a2e98f39d764422bfbdbc62c9efd44 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 19:20:00 +0200
Subject: Adding upstream version 2:4.20.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/getgroups.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 tests/getgroups.c

(limited to 'tests/getgroups.c')

diff --git a/tests/getgroups.c b/tests/getgroups.c
new file mode 100644
index 0000000..ab56480
--- /dev/null
+++ b/tests/getgroups.c
@@ -0,0 +1,66 @@
+/* this tests whether getgroups actually returns lists of integers
+   rather than gid_t. The test only works if the user running
+   the test is in at least 1 group 
+
+   The test is designed to check for those broken OSes that define
+   getgroups() as returning an array of gid_t but actually return a
+   array of ints! Ultrix is one culprit
+  */
+
+#if defined(HAVE_UNISTD_H)
+#include <unistd.h>
+#endif
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <grp.h>
+
+int main(void)
+{
+	int i;
+	int *igroups;
+	char *cgroups;
+	int grp = 0;
+	int  ngroups = getgroups(0,&grp);
+
+	if (sizeof(gid_t) == sizeof(int)) {
+		fprintf(stderr,"gid_t and int are the same size\n");
+		exit(1);
+	}
+
+	if (ngroups <= 0)
+		ngroups = 32;
+
+	igroups = (int *)malloc(sizeof(int)*ngroups);
+
+	for (i=0;i<ngroups;i++)
+		igroups[i] = 0x42424242;
+
+	ngroups = getgroups(ngroups,(gid_t *)igroups);
+
+	if (igroups[0] == 0x42424242)
+		ngroups = 0;
+
+	if (ngroups == 0) {
+		printf("WARNING: can't determine getgroups return type\n");
+		exit(1);
+	}
+	
+	cgroups = (char *)igroups;
+
+	if (ngroups == 1 && 
+	    cgroups[2] == 0x42 && cgroups[3] == 0x42) {
+		fprintf(stderr,"getgroups returns gid_t\n");
+		exit(1);
+	}
+	  
+	for (i=0;i<ngroups;i++) {
+		if (igroups[i] == 0x42424242) {
+			fprintf(stderr,"getgroups returns gid_t\n");
+			exit(1);
+		}
+	}
+
+	exit(0);
+}
-- 
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