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1d13f648d0
So far a number of utilities implemented their own calls for this, unify them in prefix_root() and prefix_roota(). The former uses heap memory, the latter allocates from the stack via alloca(). Port over most users of a --root= logic.
339 lines
12 KiB
C
339 lines
12 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2013 Zbigniew Jędrzejewski-Szmek
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdio.h>
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#include <unistd.h>
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#include "path-util.h"
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#include "util.h"
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#include "macro.h"
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#include "strv.h"
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#include "rm-rf.h"
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#define test_path_compare(a, b, result) { \
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assert_se(path_compare(a, b) == result); \
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assert_se(path_compare(b, a) == -result); \
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assert_se(path_equal(a, b) == !result); \
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assert_se(path_equal(b, a) == !result); \
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}
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static void test_path(void) {
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_cleanup_close_ int fd = -1;
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test_path_compare("/goo", "/goo", 0);
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test_path_compare("/goo", "/goo", 0);
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test_path_compare("//goo", "/goo", 0);
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test_path_compare("//goo/////", "/goo", 0);
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test_path_compare("goo/////", "goo", 0);
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test_path_compare("/goo/boo", "/goo//boo", 0);
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test_path_compare("//goo/boo", "/goo/boo//", 0);
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test_path_compare("/", "///", 0);
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test_path_compare("/x", "x/", 1);
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test_path_compare("x/", "/", -1);
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test_path_compare("/x/./y", "x/y", 1);
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test_path_compare("x/.y", "x/y", -1);
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test_path_compare("foo", "/foo", -1);
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test_path_compare("/foo", "/foo/bar", -1);
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test_path_compare("/foo/aaa", "/foo/b", -1);
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test_path_compare("/foo/aaa", "/foo/b/a", -1);
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test_path_compare("/foo/a", "/foo/aaa", -1);
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test_path_compare("/foo/a/b", "/foo/aaa", -1);
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assert_se(path_is_absolute("/"));
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assert_se(!path_is_absolute("./"));
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assert_se(is_path("/dir"));
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assert_se(is_path("a/b"));
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assert_se(!is_path("."));
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assert_se(streq(basename("./aa/bb/../file.da."), "file.da."));
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assert_se(streq(basename("/aa///.file"), ".file"));
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assert_se(streq(basename("/aa///file..."), "file..."));
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assert_se(streq(basename("file.../"), ""));
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#define test_parent(x, y) { \
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_cleanup_free_ char *z = NULL; \
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int r = path_get_parent(x, &z); \
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printf("expected: %s\n", y ? y : "error"); \
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printf("actual: %s\n", r<0 ? "error" : z); \
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assert_se((y==NULL) ^ (r==0)); \
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assert_se(y==NULL || path_equal(z, y)); \
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}
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test_parent("./aa/bb/../file.da.", "./aa/bb/..");
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test_parent("/aa///.file", "/aa///");
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test_parent("/aa///file...", "/aa///");
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test_parent("file.../", NULL);
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assert_se(path_is_mount_point("/", true) > 0);
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assert_se(path_is_mount_point("/", false) > 0);
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fd = open("/", O_RDONLY|O_CLOEXEC|O_DIRECTORY|O_NOCTTY);
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assert_se(fd >= 0);
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assert_se(fd_is_mount_point(fd) > 0);
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assert_se(path_is_mount_point("/proc", true) > 0);
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assert_se(path_is_mount_point("/proc", false) > 0);
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assert_se(path_is_mount_point("/proc/1", true) == 0);
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assert_se(path_is_mount_point("/proc/1", false) == 0);
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assert_se(path_is_mount_point("/sys", true) > 0);
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assert_se(path_is_mount_point("/sys", false) > 0);
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{
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char p1[] = "aaa/bbb////ccc";
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char p2[] = "//aaa/.////ccc";
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char p3[] = "/./";
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assert_se(path_equal(path_kill_slashes(p1), "aaa/bbb/ccc"));
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assert_se(path_equal(path_kill_slashes(p2), "/aaa/./ccc"));
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assert_se(path_equal(path_kill_slashes(p3), "/./"));
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}
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}
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static void test_find_binary(const char *self, bool local) {
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char *p;
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assert_se(find_binary("/bin/sh", local, &p) == 0);
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puts(p);
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assert_se(streq(p, "/bin/sh"));
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free(p);
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assert_se(find_binary(self, local, &p) == 0);
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puts(p);
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assert_se(endswith(p, "/test-path-util"));
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assert_se(path_is_absolute(p));
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free(p);
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assert_se(find_binary("sh", local, &p) == 0);
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puts(p);
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assert_se(endswith(p, "/sh"));
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assert_se(path_is_absolute(p));
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free(p);
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assert_se(find_binary("xxxx-xxxx", local, &p) == -ENOENT);
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assert_se(find_binary("/some/dir/xxxx-xxxx", local, &p) ==
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(local ? -ENOENT : 0));
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if (!local)
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free(p);
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}
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static void test_prefixes(void) {
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static const char* values[] = { "/a/b/c/d", "/a/b/c", "/a/b", "/a", "", NULL};
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unsigned i;
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char s[PATH_MAX];
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bool b;
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i = 0;
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PATH_FOREACH_PREFIX_MORE(s, "/a/b/c/d") {
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log_error("---%s---", s);
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assert_se(streq(s, values[i++]));
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}
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assert_se(values[i] == NULL);
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i = 1;
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PATH_FOREACH_PREFIX(s, "/a/b/c/d") {
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log_error("---%s---", s);
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assert_se(streq(s, values[i++]));
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}
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assert_se(values[i] == NULL);
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i = 0;
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PATH_FOREACH_PREFIX_MORE(s, "////a////b////c///d///////")
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assert_se(streq(s, values[i++]));
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assert_se(values[i] == NULL);
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i = 1;
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PATH_FOREACH_PREFIX(s, "////a////b////c///d///////")
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assert_se(streq(s, values[i++]));
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assert_se(values[i] == NULL);
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PATH_FOREACH_PREFIX(s, "////")
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assert_not_reached("Wut?");
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b = false;
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PATH_FOREACH_PREFIX_MORE(s, "////") {
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assert_se(!b);
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assert_se(streq(s, ""));
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b = true;
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}
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assert_se(b);
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PATH_FOREACH_PREFIX(s, "")
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assert_not_reached("wut?");
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b = false;
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PATH_FOREACH_PREFIX_MORE(s, "") {
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assert_se(!b);
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assert_se(streq(s, ""));
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b = true;
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}
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}
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static void test_path_join(void) {
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#define test_join(root, path, rest, expected) { \
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_cleanup_free_ char *z = NULL; \
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z = path_join(root, path, rest); \
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assert_se(streq(z, expected)); \
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}
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test_join("/root", "/a/b", "/c", "/root/a/b/c");
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test_join("/root", "a/b", "c", "/root/a/b/c");
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test_join("/root", "/a/b", "c", "/root/a/b/c");
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test_join("/root", "/", "c", "/root/c");
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test_join("/root", "/", NULL, "/root/");
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test_join(NULL, "/a/b", "/c", "/a/b/c");
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test_join(NULL, "a/b", "c", "a/b/c");
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test_join(NULL, "/a/b", "c", "/a/b/c");
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test_join(NULL, "/", "c", "/c");
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test_join(NULL, "/", NULL, "/");
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}
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static void test_fsck_exists(void) {
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/* Ensure we use a sane default for PATH. */
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unsetenv("PATH");
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/* fsck.minix is provided by util-linux and will probably exist. */
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assert_se(fsck_exists("minix") == 0);
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assert_se(fsck_exists("AbCdE") == -ENOENT);
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}
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static void test_make_relative(void) {
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char *result;
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assert_se(path_make_relative("some/relative/path", "/some/path", &result) < 0);
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assert_se(path_make_relative("/some/path", "some/relative/path", &result) < 0);
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#define test(from_dir, to_path, expected) { \
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_cleanup_free_ char *z = NULL; \
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path_make_relative(from_dir, to_path, &z); \
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assert_se(streq(z, expected)); \
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}
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test("/", "/", ".");
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test("/", "/some/path", "some/path");
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test("/some/path", "/some/path", ".");
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test("/some/path", "/some/path/in/subdir", "in/subdir");
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test("/some/path", "/", "../..");
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test("/some/path", "/some/other/path", "../other/path");
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test("//extra/////slashes///won't////fool///anybody//", "////extra///slashes////are/just///fine///", "../../../are/just/fine");
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}
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static void test_strv_resolve(void) {
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char tmp_dir[] = "/tmp/test-path-util-XXXXXX";
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_cleanup_strv_free_ char **search_dirs = NULL;
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_cleanup_strv_free_ char **absolute_dirs = NULL;
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char **d;
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assert_se(mkdtemp(tmp_dir) != NULL);
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search_dirs = strv_new("/dir1", "/dir2", "/dir3", NULL);
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assert_se(search_dirs);
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STRV_FOREACH(d, search_dirs) {
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char *p = strappend(tmp_dir, *d);
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assert_se(p);
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assert_se(strv_push(&absolute_dirs, p) == 0);
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}
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assert_se(mkdir(absolute_dirs[0], 0700) == 0);
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assert_se(mkdir(absolute_dirs[1], 0700) == 0);
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assert_se(symlink("dir2", absolute_dirs[2]) == 0);
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path_strv_resolve(search_dirs, tmp_dir);
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assert_se(streq(search_dirs[0], "/dir1"));
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assert_se(streq(search_dirs[1], "/dir2"));
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assert_se(streq(search_dirs[2], "/dir2"));
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assert_se(rm_rf(tmp_dir, REMOVE_ROOT|REMOVE_PHYSICAL) == 0);
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}
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static void test_path_startswith(void) {
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assert_se(path_startswith("/foo/bar/barfoo/", "/foo"));
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assert_se(path_startswith("/foo/bar/barfoo/", "/foo/"));
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assert_se(path_startswith("/foo/bar/barfoo/", "/"));
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assert_se(path_startswith("/foo/bar/barfoo/", "////"));
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assert_se(path_startswith("/foo/bar/barfoo/", "/foo//bar/////barfoo///"));
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assert_se(path_startswith("/foo/bar/barfoo/", "/foo/bar/barfoo////"));
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assert_se(path_startswith("/foo/bar/barfoo/", "/foo/bar///barfoo/"));
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assert_se(path_startswith("/foo/bar/barfoo/", "/foo////bar/barfoo/"));
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assert_se(path_startswith("/foo/bar/barfoo/", "////foo/bar/barfoo/"));
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assert_se(path_startswith("/foo/bar/barfoo/", "/foo/bar/barfoo"));
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assert_se(!path_startswith("/foo/bar/barfoo/", "/foo/bar/barfooa/"));
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assert_se(!path_startswith("/foo/bar/barfoo/", "/foo/bar/barfooa"));
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assert_se(!path_startswith("/foo/bar/barfoo/", ""));
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assert_se(!path_startswith("/foo/bar/barfoo/", "/bar/foo"));
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assert_se(!path_startswith("/foo/bar/barfoo/", "/f/b/b/"));
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}
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static void test_prefix_root_one(const char *r, const char *p, const char *expected) {
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_cleanup_free_ char *s = NULL;
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const char *t;
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assert_se(s = prefix_root(r, p));
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assert_se(streq_ptr(s, expected));
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t = prefix_roota(r, p);
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assert_se(t);
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assert_se(streq_ptr(t, expected));
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}
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static void test_prefix_root(void) {
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test_prefix_root_one("/", "/foo", "/foo");
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test_prefix_root_one(NULL, "/foo", "/foo");
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test_prefix_root_one("", "/foo", "/foo");
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test_prefix_root_one("///", "/foo", "/foo");
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test_prefix_root_one("/", "////foo", "/foo");
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test_prefix_root_one(NULL, "////foo", "/foo");
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test_prefix_root_one("/foo", "/bar", "/foo/bar");
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test_prefix_root_one("/foo", "bar", "/foo/bar");
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test_prefix_root_one("foo", "bar", "foo/bar");
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test_prefix_root_one("/foo/", "/bar", "/foo/bar");
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test_prefix_root_one("/foo/", "//bar", "/foo/bar");
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test_prefix_root_one("/foo///", "//bar", "/foo/bar");
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}
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int main(int argc, char **argv) {
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test_path();
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test_find_binary(argv[0], true);
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test_find_binary(argv[0], false);
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test_prefixes();
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test_path_join();
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test_fsck_exists();
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test_make_relative();
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test_strv_resolve();
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test_path_startswith();
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test_prefix_root();
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return 0;
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}
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