diff options
Diffstat (limited to 'tests/df/no-mtab-status.sh')
| -rwxr-xr-x | tests/df/no-mtab-status.sh | 82 |
1 files changed, 60 insertions, 22 deletions
diff --git a/tests/df/no-mtab-status.sh b/tests/df/no-mtab-status.sh index 9ea2036d..c35da6b8 100755 --- a/tests/df/no-mtab-status.sh +++ b/tests/df/no-mtab-status.sh @@ -2,7 +2,7 @@ # Test df's behaviour when the mount list cannot be read. # This test is skipped on systems that lack LD_PRELOAD support; that's fine. -# Copyright (C) 2012-2014 Free Software Foundation, Inc. +# Copyright (C) 2012-2015 Free Software Foundation, Inc. # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by @@ -21,7 +21,8 @@ print_ver_ df require_gcc_shared_ -df || skip_ "df fails" +# Protect against inaccessible remote mounts etc. +timeout 10 df || skip_ "df fails" grep '^#define HAVE_MNTENT_H 1' $CONFIG_HEADER > /dev/null \ || skip_ "no mntent.h available to confirm the interface" @@ -30,10 +31,43 @@ grep '^#define HAVE_GETMNTENT 1' $CONFIG_HEADER > /dev/null \ || skip_ "getmntent is not used on this system" # Simulate "mtab" failure. -cat > k.c <<'EOF' || framework_failure_ +cat > k.c <<EOF || framework_failure_ +#define _GNU_SOURCE #include <stdio.h> #include <errno.h> #include <mntent.h> +#include <string.h> +#include <dlfcn.h> + +#define STREQ(a, b) (strcmp (a, b) == 0) + +FILE* fopen(const char *path, const char *mode) +{ + static FILE* (*fopen_func)(char const *, char const *); + + /* get reference to original (libc provided) fopen */ + if (!fopen_func) + { + fopen_func = (FILE*(*)(char const *, char const *)) + dlsym(RTLD_NEXT, "fopen"); + if (!fopen_func) + { + fprintf (stderr, "Failed to find fopen()\n"); + errno = ESRCH; + return NULL; + } + } + + /* Returning ENOENT here will get read_file_system_list() + to fall back to using getmntent() below. */ + if (STREQ (path, "/proc/self/mountinfo")) + { + errno = ENOENT; + return NULL; + } + else + return fopen_func(path, mode); +} struct mntent *getmntent (FILE *fp) { @@ -54,34 +88,38 @@ EOF gcc_shared_ k.c k.so \ || framework_failure_ 'failed to build shared library' +cleanup_() { unset LD_PRELOAD; } + +export LD_PRELOAD=$LD_PRELOAD:./k.so + # Test if LD_PRELOAD works: -LD_PRELOAD=./k.so df +df 2>/dev/null test -f x || skip_ "internal test failure: maybe LD_PRELOAD doesn't work?" # These tests are supposed to succeed: -LD_PRELOAD=./k.so df '.' || fail=1 -LD_PRELOAD=./k.so df -i '.' || fail=1 -LD_PRELOAD=./k.so df -T '.' || fail=1 -LD_PRELOAD=./k.so df -Ti '.' || fail=1 -LD_PRELOAD=./k.so df --total '.' || fail=1 +df '.' || fail=1 +df -i '.' || fail=1 +df -T '.' || fail=1 +df -Ti '.' || fail=1 +df --total '.' || fail=1 # These tests are supposed to fail: -LD_PRELOAD=./k.so df && fail=1 -LD_PRELOAD=./k.so df -i && fail=1 -LD_PRELOAD=./k.so df -T && fail=1 -LD_PRELOAD=./k.so df -Ti && fail=1 -LD_PRELOAD=./k.so df --total && fail=1 +returns_ 1 df || fail=1 +returns_ 1 df -i || fail=1 +returns_ 1 df -T || fail=1 +returns_ 1 df -Ti || fail=1 +returns_ 1 df --total || fail=1 -LD_PRELOAD=./k.so df -a && fail=1 -LD_PRELOAD=./k.so df -a '.' && fail=1 +returns_ 1 df -a || fail=1 +returns_ 1 df -a '.' || fail=1 -LD_PRELOAD=./k.so df -l && fail=1 -LD_PRELOAD=./k.so df -l '.' && fail=1 +returns_ 1 df -l || fail=1 +returns_ 1 df -l '.' || fail=1 -LD_PRELOAD=./k.so df -t hello && fail=1 -LD_PRELOAD=./k.so df -t hello '.' && fail=1 +returns_ 1 df -t hello || fail=1 +returns_ 1 df -t hello '.' || fail=1 -LD_PRELOAD=./k.so df -x hello && fail=1 -LD_PRELOAD=./k.so df -x hello '.' && fail=1 +returns_ 1 df -x hello || fail=1 +returns_ 1 df -x hello '.' || fail=1 Exit $fail |