1 files changed, 63 insertions, 0 deletions
diff --git a/contrib/sendmail/test/t_pathconf.c b/contrib/sendmail/test/t_pathconf.c
new file mode 100644
index 0000000..a4b5038
--- /dev/null
+++ b/contrib/sendmail/test/t_pathconf.c
@@ -0,0 +1,63 @@
+/*
+**  The following test program tries the pathconf(2) routine.  It should
+**  be run in a non-NFS-mounted directory (e.g., /tmp) and on remote (NFS)
+**  mounted directories running both NFS-v2 and NFS-v3 from systems that
+**  both do and do not permit file giveaway.
+*/
+
+#include <unistd.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <sysexits.h>
+
+main()
+{
+	int fd;
+	int i;
+	char tbuf[100];
+	extern int errno;
+
+	if (geteuid() == 0)
+	{
+		printf("*** Run me as a non-root user! ***\n");
+		exit(EX_USAGE);
+	}
+
+	strcpy(tbuf, "TXXXXXX");
+	fd = mkstemp(tbuf);
+	if (fd < 0)
+	{
+		printf("*** Could not create test file %s\n", tbuf);
+		exit(EX_CANTCREAT);
+	}
+	errno = 0;
+	i = pathconf(".", _PC_CHOWN_RESTRICTED);
+	printf("pathconf(.) returns %2d, errno = %d\n", i, errno);
+	errno = 0;
+	i = pathconf(tbuf, _PC_CHOWN_RESTRICTED);
+	printf("pathconf(%s) returns %2d, errno = %d\n", tbuf, i, errno);
+	errno = 0;
+	i = fpathconf(fd, _PC_CHOWN_RESTRICTED);
+	printf("fpathconf(%s) returns %2d, errno = %d\n", tbuf, i, errno);
+	if (errno == 0 && i >= 0)
+	{
+		/* so it claims that it doesn't work -- try anyhow */
+		printf("  fpathconf claims that chown is safe ");
+		if (fchown(fd, 1, 1) >= 0)
+			printf("*** but fchown works anyhow! ***\n");
+		else
+			printf("and fchown agrees\n");
+	}
+	else
+	{
+		/* well, let's see what really happens */
+		printf("  fpathconf claims that chown is not safe ");
+		if (fchown(fd, 1, 1) >= 0)
+			printf("as indeed it is not\n");
+		else
+			printf("*** but in fact it is safe ***\n");
+	}
+	unlink(tbuf);
+	exit(EX_OK);
+}