From aa1ed760c8ca75901088e7a5faad7c291f5a5d4c Mon Sep 17 00:00:00 2001 From: "Dmitry V. Levin" Date: Wed, 27 Apr 2016 21:58:43 +0000 Subject: [PATCH] tests: check decoding of get_mempolicy syscall * tests/get_mempolicy.c: New file. * tests/get_mempolicy.test: New test. * tests/.gitignore: Add get_mempolicy. * tests/Makefile.am (check_PROGRAMS): Likewise. (DECODER_TESTS): Add get_mempolicy.test. --- tests/.gitignore | 1 + tests/Makefile.am | 2 + tests/get_mempolicy.c | 138 +++++++++++++++++++++++++++++++++++++++ tests/get_mempolicy.test | 6 ++ 4 files changed, 147 insertions(+) create mode 100644 tests/get_mempolicy.c create mode 100755 tests/get_mempolicy.test diff --git a/tests/.gitignore b/tests/.gitignore index 7fa97bad..c7be68de 100644 --- a/tests/.gitignore +++ b/tests/.gitignore @@ -62,6 +62,7 @@ fsync ftruncate ftruncate64 futimesat +get_mempolicy getcwd getdents getdents64 diff --git a/tests/Makefile.am b/tests/Makefile.am index 4846d132..67afd0fd 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -117,6 +117,7 @@ check_PROGRAMS = \ ftruncate \ ftruncate64 \ futimesat \ + get_mempolicy \ getcwd \ getdents \ getdents64 \ @@ -390,6 +391,7 @@ DECODER_TESTS = \ ftruncate.test \ ftruncate64.test \ futimesat.test \ + get_mempolicy.test \ getcwd.test \ getdents.test \ getdents64.test \ diff --git a/tests/get_mempolicy.c b/tests/get_mempolicy.c new file mode 100644 index 00000000..dbecc8d4 --- /dev/null +++ b/tests/get_mempolicy.c @@ -0,0 +1,138 @@ +/* + * Check decoding of get_mempolicy syscall. + * + * Copyright (c) 2016 Dmitry V. Levin + * 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 "tests.h" +#include + +#ifdef __NR_get_mempolicy + +# include +# include + +# include "xlat.h" +# include "xlat/policies.h" + +# define MAX_STRLEN 3 +# define NLONGS(n) ((n + 8 * sizeof(long) - 2) \ + / (8 * sizeof(long))) + +static void +print_nodes(unsigned long maxnode) +{ + unsigned long *const nodemask = + tail_alloc(sizeof(*nodemask) * NLONGS(maxnode)); + (void) tail_alloc(1); + + if (syscall(__NR_get_mempolicy, 0, nodemask, maxnode, 0, 0)) { + printf("get_mempolicy(NULL, %p, %lu, NULL, 0) = -1 %s (%m)\n", + nodemask, maxnode, errno2name()); + return; + } + + printf("get_mempolicy(NULL, ["); + + unsigned int nlongs = NLONGS(maxnode); + unsigned int i; + for (i = 0; i < nlongs; ++i) { + if (i) + fputs(", ", stdout); + if (i >= MAX_STRLEN) { + fputs("...", stdout); + break; + } + printf("%#0*lx", (int) sizeof(*nodemask) * 2 + 2, nodemask[i]); + } + + printf("], %lu, NULL, 0) = 0\n", maxnode); +} + +int +main(void) +{ + long rc; + + if (syscall(__NR_get_mempolicy, 0, 0, 0, 0, 0)) + perror_msg_and_skip("get_mempolicy"); + puts("get_mempolicy(NULL, NULL, 0, NULL, 0) = 0"); + + int *mode = (void *) 0xdefaced1baddeed2; + unsigned long maxnode = (unsigned long) 0xcafef00dbadc0ded; + const unsigned long *nodemask = (void *) 0xfacedad3bebefed4; + const unsigned long addr = (unsigned long) 0xfacefeeddeadbeef; + const unsigned long flags = -1U; + rc = syscall(__NR_get_mempolicy, mode, nodemask, maxnode, addr, flags); + printf("get_mempolicy(%p, %p, %lu, %#lx, %s|%#lx) = %ld %s (%m)\n", + mode, nodemask, maxnode, addr, + "MPOL_F_NODE|MPOL_F_ADDR", + flags & ~3, rc, errno2name()); + + (void) tail_alloc(1); + mode = tail_alloc(sizeof(*mode)); + (void) tail_alloc(1); + + rc = syscall(__NR_get_mempolicy, mode, 0, 0, 0, 0); + printf("get_mempolicy(["); + printxval(policies, (unsigned) *mode, "MPOL_???"); + printf("], NULL, 0, NULL, 0) = %ld\n", rc); + + *mode = -1; + rc = syscall(__NR_get_mempolicy, mode, 0, 0, mode - 1, 2); + printf("get_mempolicy(["); + printxval(policies, (unsigned) *mode, "MPOL_???"); + printf("], NULL, 0, %p, MPOL_F_ADDR) = %ld\n", mode - 1, rc); + + maxnode = get_page_size() * 8; + + print_nodes(maxnode); + print_nodes(maxnode + 1); + print_nodes(maxnode + 2); + + maxnode = sizeof(*nodemask) * 8; + print_nodes(maxnode - 1); + print_nodes(maxnode ); + print_nodes(maxnode + 1); + print_nodes(maxnode + 2); + print_nodes(maxnode * 2 - 1); + print_nodes(maxnode * 2 ); + print_nodes(maxnode * 2 + 1); + print_nodes(maxnode * 2 + 2); + print_nodes(maxnode * 3 - 1); + print_nodes(maxnode * 3 ); + print_nodes(maxnode * 3 + 1); + print_nodes(maxnode * 3 + 2); + + puts("+++ exited with 0 +++"); + return 0; +} + +#else + +SKIP_MAIN_UNDEFINED("__NR_get_mempolicy") + +#endif diff --git a/tests/get_mempolicy.test b/tests/get_mempolicy.test new file mode 100755 index 00000000..92270970 --- /dev/null +++ b/tests/get_mempolicy.test @@ -0,0 +1,6 @@ +#!/bin/sh + +# Check get_mempolicy syscall decoding. + +. "${srcdir=.}/init.sh" +run_strace_match_diff -s3 -a38 -- 2.40.0