1#!/bin/sh 2# Show that we've eliminated most of ls' failing getxattr syscalls, 3# regardless of how many files are in a directory we list. 4# This test is skipped on systems that lack LD_PRELOAD support; that's fine. 5# Similarly, on a system that lacks getxattr altogether, skipping it is fine. 6 7# Copyright (C) 2012-2023 Free Software Foundation, Inc. 8 9# This program is free software: you can redistribute it and/or modify 10# it under the terms of the GNU General Public License as published by 11# the Free Software Foundation, either version 3 of the License, or 12# (at your option) any later version. 13 14# This program is distributed in the hope that it will be useful, 15# but WITHOUT ANY WARRANTY; without even the implied warranty of 16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17# GNU General Public License for more details. 18 19# You should have received a copy of the GNU General Public License 20# along with this program. If not, see <https://www.gnu.org/licenses/>. 21 22. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src 23print_ver_ ls 24require_gcc_shared_ 25 26# Replace each getxattr and lgetxattr call with a call to these stubs. 27# Count those and write the total number of calls to the file "x" 28# via a global destructor. 29cat > k.c <<'EOF' || framework_failure_ 30#include <errno.h> 31#include <stdio.h> 32#include <sys/types.h> 33 34static unsigned long int n_calls; 35 36static void __attribute__ ((destructor)) 37print_call_count (void) 38{ 39 FILE *fp = fopen ("x", "w"); if (!fp) return; 40 fprintf (fp, "%lu\n", n_calls); fclose (fp); 41} 42 43static ssize_t incr () { ++n_calls; errno = ENOTSUP; return -1; } 44ssize_t getxattr (const char *path, const char *name, void *value, size_t size) 45{ return incr (); } 46ssize_t lgetxattr(const char *path, const char *name, void *value, size_t size) 47{ return incr (); } 48EOF 49 50# Then compile/link it: 51gcc_shared_ k.c k.so \ 52 || framework_failure_ 'failed to build shared library' 53 54# Create a few files: 55seq 20 | xargs touch || framework_failure_ 56 57# Finally, run the test: 58LD_PRELOAD=$LD_PRELOAD:./k.so ls --color=always -l . || fail=1 59 60test -f x || skip_ "internal test failure: maybe LD_PRELOAD doesn't work?" 61 62# Ensure that there were no more than 3 *getxattr calls. 63n_calls=$(cat x) 64test "$n_calls" -le 3 || fail=1 65 66Exit $fail 67