/*** This file is part of systemd Copyright 2014 Ronny Chevalier systemd 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. systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <unistd.h> #include "alloc-util.h" #include "copy.h" #include "fd-util.h" #include "fileio.h" #include "fs-util.h" #include "macro.h" #include "mkdir.h" #include "path-util.h" #include "rm-rf.h" #include "string-util.h" #include "strv.h" #include "util.h" static void test_copy_file(void) { _cleanup_free_ char *buf = NULL; char fn[] = "/tmp/test-copy_file.XXXXXX"; char fn_copy[] = "/tmp/test-copy_file.XXXXXX"; size_t sz = 0; int fd; fd = mkostemp_safe(fn, O_RDWR|O_CLOEXEC); assert_se(fd >= 0); close(fd); fd = mkostemp_safe(fn_copy, O_RDWR|O_CLOEXEC); assert_se(fd >= 0); close(fd); assert_se(write_string_file(fn, "foo bar bar bar foo", WRITE_STRING_FILE_CREATE) == 0); assert_se(copy_file(fn, fn_copy, 0, 0644, 0) == 0); assert_se(read_full_file(fn_copy, &buf, &sz) == 0); assert_se(streq(buf, "foo bar bar bar foo\n")); assert_se(sz == 20); unlink(fn); unlink(fn_copy); } static void test_copy_file_fd(void) { char in_fn[] = "/tmp/test-copy-file-fd-XXXXXX"; char out_fn[] = "/tmp/test-copy-file-fd-XXXXXX"; _cleanup_close_ int in_fd = -1, out_fd = -1; char text[] = "boohoo\nfoo\n\tbar\n"; char buf[64] = {0}; in_fd = mkostemp_safe(in_fn, O_RDWR); assert_se(in_fd >= 0); out_fd = mkostemp_safe(out_fn, O_RDWR); assert_se(out_fd >= 0); assert_se(write_string_file(in_fn, text, WRITE_STRING_FILE_CREATE) == 0); assert_se(copy_file_fd("/a/file/which/does/not/exist/i/guess", out_fd, true) < 0); assert_se(copy_file_fd(in_fn, out_fd, true) >= 0); assert_se(lseek(out_fd, SEEK_SET, 0) == 0); assert_se(read(out_fd, buf, sizeof(buf)) == sizeof(text) - 1); assert_se(streq(buf, text)); unlink(in_fn); unlink(out_fn); } static void test_copy_tree(void) { char original_dir[] = "/tmp/test-copy_tree/"; char copy_dir[] = "/tmp/test-copy_tree-copy/"; char **files = STRV_MAKE("file", "dir1/file", "dir1/dir2/file", "dir1/dir2/dir3/dir4/dir5/file"); char **links = STRV_MAKE("link", "file", "link2", "dir1/file"); char **p, **link; (void) rm_rf(copy_dir, REMOVE_ROOT|REMOVE_PHYSICAL); (void) rm_rf(original_dir, REMOVE_ROOT|REMOVE_PHYSICAL); STRV_FOREACH(p, files) { char *f = strjoina(original_dir, *p); assert_se(mkdir_parents(f, 0755) >= 0); assert_se(write_string_file(f, "file", WRITE_STRING_FILE_CREATE) == 0); } STRV_FOREACH_PAIR(link, p, links) { char *f = strjoina(original_dir, *p); char *l = strjoina(original_dir, *link); assert_se(mkdir_parents(l, 0755) >= 0); assert_se(symlink(f, l) == 0); } assert_se(copy_tree(original_dir, copy_dir, true) == 0); STRV_FOREACH(p, files) { _cleanup_free_ char *buf = NULL; size_t sz = 0; char *f = strjoina(copy_dir, *p); assert_se(access(f, F_OK) == 0); assert_se(read_full_file(f, &buf, &sz) == 0); assert_se(streq(buf, "file\n")); } STRV_FOREACH_PAIR(link, p, links) { _cleanup_free_ char *target = NULL; char *f = strjoina(original_dir, *p); char *l = strjoina(copy_dir, *link); assert_se(readlink_and_canonicalize(l, &target) == 0); assert_se(path_equal(f, target)); } assert_se(copy_tree(original_dir, copy_dir, false) < 0); assert_se(copy_tree("/tmp/inexistent/foo/bar/fsdoi", copy_dir, false) < 0); (void) rm_rf(copy_dir, REMOVE_ROOT|REMOVE_PHYSICAL); (void) rm_rf(original_dir, REMOVE_ROOT|REMOVE_PHYSICAL); } static void test_copy_bytes(void) { _cleanup_close_pair_ int pipefd[2] = {-1, -1}; _cleanup_close_ int infd = -1; int r, r2; char buf[1024], buf2[1024]; infd = open("/usr/lib/os-release", O_RDONLY|O_CLOEXEC); if (infd < 0) infd = open("/etc/os-release", O_RDONLY|O_CLOEXEC); assert_se(infd >= 0); assert_se(pipe2(pipefd, O_CLOEXEC) == 0); r = copy_bytes(infd, pipefd[1], (uint64_t) -1, false); assert_se(r == 0); r = read(pipefd[0], buf, sizeof(buf)); assert_se(r >= 0); assert_se(lseek(infd, 0, SEEK_SET) == 0); r2 = read(infd, buf2, sizeof(buf2)); assert_se(r == r2); assert_se(strneq(buf, buf2, r)); /* test copy_bytes with invalid descriptors */ r = copy_bytes(pipefd[0], pipefd[0], 1, false); assert_se(r == -EBADF); r = copy_bytes(pipefd[1], pipefd[1], 1, false); assert_se(r == -EBADF); r = copy_bytes(pipefd[1], infd, 1, false); assert_se(r == -EBADF); } int main(int argc, char *argv[]) { test_copy_file(); test_copy_file_fd(); test_copy_tree(); test_copy_bytes(); return 0; }