void test_checkout_index__honor_coresymlinks_setting_set_to_true(void)
{
git_checkout_opts opts = GIT_CHECKOUT_OPTS_INIT;
set_repo_symlink_handling_cap_to(true);
opts.checkout_strategy = GIT_CHECKOUT_SAFE_CREATE;
cl_git_pass(git_checkout_index(g_repo, NULL, &opts));
#ifdef GIT_WIN32
test_file_contents("./testrepo/link_to_new.txt", "new.txt");
#else
{
char link_data[1024];
size_t link_size = 1024;
link_size = p_readlink("./testrepo/link_to_new.txt", link_data, link_size);
link_data[link_size] = '\0';
cl_assert_equal_i(link_size, strlen("new.txt"));
cl_assert_equal_s(link_data, "new.txt");
test_file_contents("./testrepo/link_to_new.txt", "my new file\n");
}
#endif
}
void test_checkout_index__honor_coresymlinks_setting_set_to_true(void)
{
git_checkout_options opts = GIT_CHECKOUT_OPTIONS_INIT;
cl_repo_set_bool(g_repo, "core.symlinks", true);
opts.checkout_strategy = GIT_CHECKOUT_SAFE | GIT_CHECKOUT_RECREATE_MISSING;
cl_git_pass(git_checkout_index(g_repo, NULL, &opts));
#ifdef GIT_WIN32
check_file_contents("./testrepo/link_to_new.txt", "new.txt");
#else
{
char link_data[1024];
size_t link_size = 1024;
link_size = p_readlink("./testrepo/link_to_new.txt", link_data, link_size);
link_data[link_size] = '\0';
cl_assert_equal_i(link_size, strlen("new.txt"));
cl_assert_equal_s(link_data, "new.txt");
check_file_contents("./testrepo/link_to_new.txt", "my new file\n");
}
#endif
}
static int diff_file_content_load_workdir_symlink(
git_diff_file_content *fc, git_buf *path)
{
ssize_t alloc_len, read_len;
int symlink_supported, error;
if ((error = git_repository__cvar(
&symlink_supported, fc->repo, GIT_CVAR_SYMLINKS)) < 0)
return -1;
if (!symlink_supported)
return diff_file_content_load_workdir_symlink_fake(fc, path);
/* link path on disk could be UTF-16, so prepare a buffer that is
* big enough to handle some UTF-8 data expansion
*/
alloc_len = (ssize_t)(fc->file->size * 2) + 1;
fc->map.data = git__calloc(alloc_len, sizeof(char));
GITERR_CHECK_ALLOC(fc->map.data);
fc->flags |= GIT_DIFF_FLAG__FREE_DATA;
read_len = p_readlink(git_buf_cstr(path), fc->map.data, alloc_len);
if (read_len < 0) {
giterr_set(GITERR_OS, "failed to read symlink '%s'", fc->file->path);
return -1;
}
fc->map.len = read_len;
return 0;
}
void test_checkout_index__honor_coresymlinks_default(void)
{
git_repository *repo;
git_remote *origin;
git_object *target;
char cwd[GIT_PATH_MAX];
const char *url = git_repository_path(g_repo);
cl_assert(getcwd(cwd, sizeof(cwd)) != NULL);
cl_assert_equal_i(0, p_mkdir("readonly", 0555)); // Read-only directory
cl_assert_equal_i(0, chdir("readonly"));
cl_git_pass(git_repository_init(&repo, "../symlink.git", true));
cl_assert_equal_i(0, chdir(cwd));
cl_assert_equal_i(0, p_mkdir("symlink", 0777));
cl_git_pass(git_repository_set_workdir(repo, "symlink", 1));
cl_git_pass(git_remote_create(&origin, repo, GIT_REMOTE_ORIGIN, url));
cl_git_pass(git_remote_fetch(origin, NULL, NULL, NULL));
git_remote_free(origin);
cl_git_pass(git_revparse_single(&target, repo, "remotes/origin/master"));
cl_git_pass(git_reset(repo, target, GIT_RESET_HARD, NULL));
git_object_free(target);
git_repository_free(repo);
#ifdef GIT_WIN32
check_file_contents("./symlink/link_to_new.txt", "new.txt");
#else
{
char link_data[1024];
size_t link_size = 1024;
link_size = p_readlink("./symlink/link_to_new.txt", link_data, link_size);
link_data[link_size] = '\0';
cl_assert_equal_i(link_size, strlen("new.txt"));
cl_assert_equal_s(link_data, "new.txt");
check_file_contents("./symlink/link_to_new.txt", "my new file\n");
}
#endif
cl_fixture_cleanup("symlink");
}
int git_odb__hashlink(git_oid *out, const char *path)
{
struct stat st;
git_off_t size;
int result;
if (git_path_lstat(path, &st) < 0)
return -1;
size = st.st_size;
if (!git__is_sizet(size)) {
giterr_set(GITERR_OS, "File size overflow for 32-bit systems");
return -1;
}
if (S_ISLNK(st.st_mode)) {
char *link_data;
ssize_t read_len;
link_data = (char*) git__malloc((size_t)(size + 1));
GITERR_CHECK_ALLOC(link_data);
read_len = p_readlink(path, link_data, (size_t)size);
link_data[size] = '\0';
if (read_len != (ssize_t)size) {
giterr_set(GITERR_OS, "Failed to read symlink data for '%s'", path);
git__free(link_data);
return -1;
}
result = git_odb_hash(out, link_data, (size_t)size, GIT_OBJ_BLOB);
git__free(link_data);
} else {
int fd = git_futils_open_ro(path);
if (fd < 0)
return -1;
result = git_odb__hashfd(out, fd, (size_t)size, GIT_OBJ_BLOB);
p_close(fd);
}
return result;
}
static int write_symlink(
git_oid *id, git_odb *odb, const char *path, size_t link_size)
{
char *link_data;
ssize_t read_len;
int error;
link_data = git__malloc(link_size);
GITERR_CHECK_ALLOC(link_data);
read_len = p_readlink(path, link_data, link_size);
if (read_len != (ssize_t)link_size) {
giterr_set(GITERR_OS, "failed to create blob: cannot read symlink '%s'", path);
git__free(link_data);
return -1;
}
error = git_odb_write(id, odb, (void *)link_data, link_size, GIT_OBJECT_BLOB);
git__free(link_data);
return error;
}
void test_checkout_index__honor_coresymlinks_setting_set_to_true(void)
{
set_repo_symlink_handling_cap_to(true);
cl_git_pass(git_checkout_index(g_repo, &g_opts, NULL));
#ifdef GIT_WIN32
test_file_contents("./testrepo/link_to_new.txt", "new.txt");
#else
{
char link_data[1024];
size_t link_size = 1024;
link_size = p_readlink("./testrepo/link_to_new.txt", link_data, link_size);
link_data[link_size] = '\0';
cl_assert_equal_i(link_size, strlen("new.txt"));
cl_assert_equal_s(link_data, "new.txt");
test_file_contents("./testrepo/link_to_new.txt", "my new file\n");
}
#endif
}
static void ensure_workdir_link(const char *path, const char *target)
{
#ifdef GIT_WIN32
ensure_workdir_contents(path, target);
#else
git_buf fullpath = GIT_BUF_INIT;
char actual[1024];
struct stat st;
int len;
cl_git_pass(
git_buf_joinpath(&fullpath, git_repository_workdir(g_repo), path));
cl_git_pass(p_lstat(git_buf_cstr(&fullpath), &st));
cl_assert(S_ISLNK(st.st_mode));
cl_assert((len = p_readlink(git_buf_cstr(&fullpath), actual, 1024)) > 0);
actual[len] = '\0';
cl_assert(strcmp(actual, target) == 0);
git_buf_free(&fullpath);
#endif
}
static int do_lstat(
const char *file_name, struct stat *buf, int posix_enotdir)
{
WIN32_FILE_ATTRIBUTE_DATA fdata;
wchar_t fbuf[GIT_WIN_PATH], lastch;
int flen;
flen = git__utf8_to_16(fbuf, GIT_WIN_PATH, file_name);
/* truncate trailing slashes */
for (; flen > 0; --flen) {
lastch = fbuf[flen - 1];
if (WIN32_IS_WSEP(lastch))
fbuf[flen - 1] = L'\0';
else if (lastch != L'\0')
break;
}
if (GetFileAttributesExW(fbuf, GetFileExInfoStandard, &fdata)) {
int fMode = S_IREAD;
if (!buf)
return 0;
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
fMode |= S_IFDIR;
else
fMode |= S_IFREG;
if (!(fdata.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
fMode |= S_IWRITE;
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
fMode |= S_IFLNK;
buf->st_ino = 0;
buf->st_gid = 0;
buf->st_uid = 0;
buf->st_nlink = 1;
buf->st_mode = (mode_t)fMode;
buf->st_size = ((git_off_t)fdata.nFileSizeHigh << 32) + fdata.nFileSizeLow;
buf->st_dev = buf->st_rdev = (_getdrive() - 1);
buf->st_atime = filetime_to_time_t(&(fdata.ftLastAccessTime));
buf->st_mtime = filetime_to_time_t(&(fdata.ftLastWriteTime));
buf->st_ctime = filetime_to_time_t(&(fdata.ftCreationTime));
/* Windows symlinks have zero file size, call readlink to determine
* the length of the path pointed to, which we expect everywhere else
*/
if (S_ISLNK(fMode)) {
char target[GIT_WIN_PATH];
int readlink_result;
readlink_result = p_readlink(file_name, target, GIT_WIN_PATH);
if (readlink_result == -1)
return -1;
buf->st_size = strlen(target);
}
return 0;
}
errno = ENOENT;
/* We need POSIX behavior, then ENOTDIR must set when any of the folders in the
* file path is a regular file,otherwise ENOENT must be set.
*/
if (posix_enotdir) {
/* scan up path until we find an existing item */
while (1) {
/* remove last directory component */
for (--flen; flen > 0 && !WIN32_IS_WSEP(fbuf[flen]); --flen);
if (flen <= 0)
break;
fbuf[flen] = L'\0';
if (GetFileAttributesExW(fbuf, GetFileExInfoStandard, &fdata)) {
if (!(fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
errno = ENOTDIR;
break;
}
}
}
return -1;
}
