tests: extend test coverage of setreuid syscall

* tests/setreugid.c: New file.
* tests/setreuid.c: New file.
* tests/setreuid.test: New test.
* tests/.gitignore: Add setreuid.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add setreuid.test.
(EXTRA_DIST): Add setreugid.c.

diff --git a/tests/.gitignore b/tests/.gitignore
index f8c2f52d31b34e7206d042d1e1d2f25272f6fc13..14cd662ddff293c0af712daae649d5de460193f9 100644 (file)
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -145,6 +145,7 @@ set_ptracer_any
 setgid
 setgid32
 sethostname
+setreuid
 setuid
 setuid32
 shmxt

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 3c080437a494d64c6aa58bff7f5456e24da95145..d7297d4fe242765fbd374156a3e67d7f97faefa4 100644 (file)
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -195,6 +195,7 @@ check_PROGRAMS = \
        setgid \
        setgid32 \
        sethostname \
+       setreuid \
        setuid \
        setuid32 \
        shmxt \
@@ -406,6 +407,7 @@ DECODER_TESTS = \
        setgid.test \
        setgid32.test \
        sethostname.test \
+       setreuid.test \
        setuid.test \
        setuid32.test \
        shmxt.test \
@@ -514,6 +516,7 @@ EXTRA_DIST = init.sh run.sh match.awk \
             pipe.expected \
             ppoll.expected \
             ppoll-v.expected \
+            setreugid.c \
             setugid.c \
             sigaction.awk \
             sigaltstack.expected \

diff --git a/tests/setreugid.c b/tests/setreugid.c
new file mode 100644 (file)
index 0000000..38c80d5
--- /dev/null
+++ b/tests/setreugid.c
@@ -0,0 +1,106 @@
+/*
+ * Check decoding of setreuid/setregid/setreuid32/setregid32 syscalls.
+ *
+ * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 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 SUCH DAMAGE.
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+
+static int
+ugid2int(const unsigned UGID_TYPE ugid)
+{
+       if ((unsigned UGID_TYPE) -1U == ugid)
+               return -1;
+       else
+               return ugid;
+}
+
+static void
+print_int(const unsigned int num)
+{
+       if (num == -1U)
+               printf("-1");
+       else
+               printf("%u", num);
+}
+
+static int
+num_matches_id(const unsigned int num, const unsigned int ugid)
+{
+       return num == ugid || num == -1U;
+}
+
+#define PAIR(val)      { val, ugid }, { ugid, val }
+
+int
+main(void)
+{
+       unsigned int ugid = GETUGID;
+       CHECK_OVERFLOWUGID(ugid);
+
+       const struct {
+               const long r, e;
+       } tests[] = {
+               { ugid, ugid },
+               PAIR((unsigned long) 0xffffffff00000000ULL | ugid),
+               PAIR(-1U),
+               PAIR(-1L),
+               PAIR(0xffff0000U | ugid),
+               PAIR(0xffff),
+               PAIR(0xc0deffffU)
+       };
+
+       unsigned int i;
+
+       for (i = 0; i < ARRAY_SIZE(tests); ++i) {
+               const unsigned int rn = ugid2int(tests[i].r);
+               const unsigned int en = ugid2int(tests[i].e);
+
+               if (!num_matches_id(rn, ugid) || !num_matches_id(en, ugid))
+                       continue;
+
+               if (syscall(SYSCALL_NR, tests[i].r, tests[i].e)) {
+                       if (!i && ENOSYS == errno) {
+                               printf("%s(%u, %u) = -1 ENOSYS (%m)\n",
+                                      SYSCALL_NAME, ugid, ugid);
+                               break;
+                       }
+                       perror_msg_and_fail("%s(%#lx, %#lx)", SYSCALL_NAME,
+                                           tests[i].r, tests[i].e);
+               }
+
+               printf("%s(", SYSCALL_NAME);
+               print_int(rn);
+               printf(", ");
+               print_int(en);
+               printf(") = 0\n");
+       }
+
+       puts("+++ exited with 0 +++");
+       return 0;
+}

diff --git a/tests/setreuid.c b/tests/setreuid.c
new file mode 100644 (file)
index 0000000..dc13038
--- /dev/null
+++ b/tests/setreuid.c
@@ -0,0 +1,25 @@
+#include "tests.h"
+#include <sys/syscall.h>
+
+#ifdef __NR_setreuid
+
+# define SYSCALL_NR    __NR_setreuid
+# define SYSCALL_NAME  "setreuid"
+
+# if defined __NR_setreuid32 && __NR_setreuid != __NR_setreuid32
+#  define UGID_TYPE    short
+#  define GETUGID      syscall(__NR_geteuid)
+#  define CHECK_OVERFLOWUGID(arg)      check_overflowuid(arg)
+# else
+#  define UGID_TYPE    int
+#  define GETUGID      geteuid()
+#  define CHECK_OVERFLOWUGID(arg)
+# endif
+
+# include "setreugid.c"
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_setreuid")
+
+#endif

diff --git a/tests/setreuid.test b/tests/setreuid.test
new file mode 100755 (executable)
index 0000000..b6db3c1
--- /dev/null
+++ b/tests/setreuid.test
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+# Check setreuid syscall decoding.
+
+. "${srcdir=.}/init.sh"
+run_strace_match_diff -a15