diff options
| -rw-r--r-- | sysdeps/unix/sysv/linux/Makefile | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/tst-getauxval.c | 74 |
2 files changed, 75 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile index ca953804d0..89cb005c7d 100644 --- a/sysdeps/unix/sysv/linux/Makefile +++ b/sysdeps/unix/sysv/linux/Makefile @@ -126,6 +126,7 @@ tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \ tst-prctl \ tst-scm_rights \ tst-epoll \ + tst-getauxval \ # tests # For +depfiles in Makerules. diff --git a/sysdeps/unix/sysv/linux/tst-getauxval.c b/sysdeps/unix/sysv/linux/tst-getauxval.c new file mode 100644 index 0000000000..c4b6195743 --- /dev/null +++ b/sysdeps/unix/sysv/linux/tst-getauxval.c @@ -0,0 +1,74 @@ +/* Basic test for getauxval. + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + +#include <unistd.h> +#include <stdio.h> +#include <support/check.h> +#include <sys/auxv.h> + +static int missing; +static int mismatch; + +static void +check_nonzero (unsigned long t, const char *s) +{ + unsigned long v = getauxval (t); + printf ("%s: %lu (0x%lx)\n", s, v, v); + if (v == 0) + missing++; +} + +static void +check_eq (unsigned long t, const char *s, unsigned long want) +{ + unsigned long v = getauxval (t); + printf ("%s: %lu want: %lu\n", s, v, want); + if (v != want) + mismatch++; +} + +#define NZ(x) check_nonzero (x, #x) +#define EQ(x, want) check_eq (x, #x, want) + +static int +do_test (void) +{ + /* These auxv entries should be non-zero on Linux. */ + NZ (AT_PHDR); + NZ (AT_PHENT); + NZ (AT_PHNUM); + NZ (AT_PAGESZ); + NZ (AT_ENTRY); + NZ (AT_CLKTCK); + NZ (AT_RANDOM); + NZ (AT_EXECFN); + if (missing) + FAIL_EXIT1 ("Found %d missing auxv entries.\n", missing); + + /* Check against syscalls. */ + EQ (AT_UID, getuid ()); + EQ (AT_EUID, geteuid ()); + EQ (AT_GID, getgid ()); + EQ (AT_EGID, getegid ()); + if (mismatch) + FAIL_EXIT1 ("Found %d mismatching auxv entries.\n", mismatch); + + return 0; +} + +#include <support/test-driver.c> |