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author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-12-27 19:01:57 +0000 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-12-27 19:01:57 +0000 |
commit | cab56836b146bc129f1ad43f0393d95a9deca63a (patch) | |
tree | 4f4e655319bbac78fca170da05275c127429b460 /elf/tst-env-setuid-tunables.c | |
parent | 04ac1241a4cd004872282c2c82ec37fa33925292 (diff) | |
parent | 82dd75a7f436a19047325d62182590c9f9e23a78 (diff) |
Merge branch 't/tls' into refs/top-bases/t/tls-threadvar
Diffstat (limited to 'elf/tst-env-setuid-tunables.c')
-rw-r--r-- | elf/tst-env-setuid-tunables.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/elf/tst-env-setuid-tunables.c b/elf/tst-env-setuid-tunables.c new file mode 100644 index 0000000000..d7c4f0d574 --- /dev/null +++ b/elf/tst-env-setuid-tunables.c @@ -0,0 +1,75 @@ +/* Copyright (C) 2017-2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +/* Verify that tunables correctly filter out unsafe tunables like + glibc.malloc.check and glibc.malloc.mmap_threshold but also retain + glibc.malloc.mmap_threshold in an unprivileged child. */ + +/* This is compiled as part of the testsuite but needs to see + HAVE_TUNABLES. */ +#define _LIBC 1 +#include "config.h" +#undef _LIBC + +#define test_parent test_parent_tunables +#define test_child test_child_tunables + +static int test_child_tunables (void); +static int test_parent_tunables (void); + +#include "tst-env-setuid.c" + +#define CHILD_VALSTRING_VALUE "glibc.malloc.mmap_threshold=4096" +#define PARENT_VALSTRING_VALUE \ + "glibc.malloc.check=2:glibc.malloc.mmap_threshold=4096" + +static int +test_child_tunables (void) +{ + const char *val = getenv ("GLIBC_TUNABLES"); + +#if HAVE_TUNABLES + if (val != NULL && strcmp (val, CHILD_VALSTRING_VALUE) == 0) + return 0; + + if (val != NULL) + printf ("Unexpected GLIBC_TUNABLES VALUE %s\n", val); + + return 1; +#else + if (val != NULL) + { + printf ("GLIBC_TUNABLES not cleared\n"); + return 1; + } + return 0; +#endif +} + +static int +test_parent_tunables (void) +{ + const char *val = getenv ("GLIBC_TUNABLES"); + + if (val != NULL && strcmp (val, PARENT_VALSTRING_VALUE) == 0) + return 0; + + if (val != NULL) + printf ("Unexpected GLIBC_TUNABLES VALUE %s\n", val); + + return 1; +} |