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Diffstat (limited to 'tests/ls/getxattr-speedup.sh')
-rwxr-xr-x | tests/ls/getxattr-speedup.sh | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/tests/ls/getxattr-speedup.sh b/tests/ls/getxattr-speedup.sh new file mode 100755 index 000000000..967f7c95f --- /dev/null +++ b/tests/ls/getxattr-speedup.sh @@ -0,0 +1,65 @@ +#!/bin/sh +# Show that we've eliminated most of ls' failing getxattr syscalls, +# regardless of how many files are in a directory we list. +# This test is skipped on systems that lack LD_PRELOAD support; that's fine. +# Similarly, on a system that lacks getxattr altogether, skipping it is fine. + +# Copyright (C) 2012 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 +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. + +# This program 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 General Public License for more details. + +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +. "${srcdir=.}/init.sh"; path_prepend_ ../src +print_ver_ ls + +# Replace each getxattr and lgetxattr call with a call to these stubs. +# Count those and write the total number of calls to the file "x" +# via a global destructor. +cat > k.c <<'EOF' || framework_failure_ +#include <errno.h> +#include <stdio.h> +#include <sys/types.h> + +static unsigned long int n_calls; + +static void __attribute__ ((destructor)) +print_call_count (void) +{ + FILE *fp = fopen ("x", "w"); if (!fp) return; + fprintf (fp, "%lu\n", n_calls); fclose (fp); +} + +static ssize_t incr () { ++n_calls; errno = ENOTSUP; return -1; } +ssize_t getxattr (const char *path, const char *name, void *value, size_t size) +{ return incr (); } +ssize_t lgetxattr(const char *path, const char *name, void *value, size_t size) +{ return incr (); } +EOF + +# Then compile/link it: +$CC -shared -fPIC -O2 k.c -o k.so \ + || framework_failure_ 'failed to compile with -shared -fPIC' + +# Create a few files: +seq 20 | xargs touch || framework_failure_ + +# Finally, run the test: +LD_PRELOAD=./k.so ls --color=always -l . || fail=1 + +test -f x || skip_ "internal test failure: maybe LD_PRELOAD doesn't work?" + +# Ensure that there were no more than 3 *getxattr calls. +n_calls=$(cat x) +test "$n_calls" -le 3 || fail=1 + +Exit $fail |