* Utilities for paths and pathnames
*/
#include "cache.h"
+#include "repository.h"
#include "strbuf.h"
#include "string-list.h"
#include "dir.h"
#include "worktree.h"
#include "submodule-config.h"
+#include "path.h"
+#include "packfile.h"
static int get_st_mode_bits(const char *path, int *mode)
{
return sb;
}
-static char *cleanup_path(char *path)
+static const char *cleanup_path(const char *path)
{
/* Clean it up */
- if (!memcmp(path, "./", 2)) {
- path += 2;
+ if (skip_prefix(path, "./", &path)) {
while (*path == '/')
path++;
}
static void strbuf_cleanup_path(struct strbuf *sb)
{
- char *path = cleanup_path(sb->buf);
+ const char *path = cleanup_path(sb->buf);
if (path > sb->buf)
strbuf_remove(sb, 0, path - sb->buf);
}
strlcpy(buf, bad_path, n);
return buf;
}
- return cleanup_path(buf);
+ return (char *)cleanup_path(buf);
}
static int dir_prefix(const char *buf, const char *dir)
* Split this node: child will contain this node's
* existing children.
*/
- child = malloc(sizeof(*child));
+ child = xmalloc(sizeof(*child));
memcpy(child->children, root->children, sizeof(root->children));
child->len = root->len - i - 1;
{
char *base = buf->buf + git_dir_len;
init_common_trie();
- if (!common_dir)
- common_dir = get_git_common_dir();
if (trie_find(&common_trie, base, check_common, NULL) > 0)
replace_dir(buf, git_dir_len, common_dir);
}
const struct common_dir *p;
int len;
- if (!git_common_dir_env)
+ if (!the_repository->different_commondir)
return;
strbuf_addf(&sb, "%s/", get_git_dir());
len = sb.len;
strbuf_release(&sb);
}
-static void adjust_git_path(struct strbuf *buf, int git_dir_len)
+static void adjust_git_path(const struct repository *repo,
+ struct strbuf *buf, int git_dir_len)
{
const char *base = buf->buf + git_dir_len;
- if (git_graft_env && is_dir_file(base, "info", "grafts"))
+ if (is_dir_file(base, "info", "grafts"))
strbuf_splice(buf, 0, buf->len,
- get_graft_file(), strlen(get_graft_file()));
- else if (git_index_env && !strcmp(base, "index"))
+ repo->graft_file, strlen(repo->graft_file));
+ else if (!strcmp(base, "index"))
strbuf_splice(buf, 0, buf->len,
- get_index_file(), strlen(get_index_file()));
- else if (git_db_env && dir_prefix(base, "objects"))
- replace_dir(buf, git_dir_len + 7, get_object_directory());
+ repo->index_file, strlen(repo->index_file));
+ else if (dir_prefix(base, "objects"))
+ replace_dir(buf, git_dir_len + 7, repo->objectdir);
else if (git_hooks_path && dir_prefix(base, "hooks"))
replace_dir(buf, git_dir_len + 5, git_hooks_path);
- else if (git_common_dir_env)
- update_common_dir(buf, git_dir_len, NULL);
+ else if (repo->different_commondir)
+ update_common_dir(buf, git_dir_len, repo->commondir);
}
-static void do_git_path(const struct worktree *wt, struct strbuf *buf,
+static void strbuf_worktree_gitdir(struct strbuf *buf,
+ const struct repository *repo,
+ const struct worktree *wt)
+{
+ if (!wt)
+ strbuf_addstr(buf, repo->gitdir);
+ else if (!wt->id)
+ strbuf_addstr(buf, repo->commondir);
+ else
+ strbuf_git_common_path(buf, repo, "worktrees/%s", wt->id);
+}
+
+static void do_git_path(const struct repository *repo,
+ const struct worktree *wt, struct strbuf *buf,
const char *fmt, va_list args)
{
int gitdir_len;
- strbuf_addstr(buf, get_worktree_git_dir(wt));
+ strbuf_worktree_gitdir(buf, repo, wt);
if (buf->len && !is_dir_sep(buf->buf[buf->len - 1]))
strbuf_addch(buf, '/');
gitdir_len = buf->len;
strbuf_vaddf(buf, fmt, args);
- adjust_git_path(buf, gitdir_len);
+ if (!wt)
+ adjust_git_path(repo, buf, gitdir_len);
strbuf_cleanup_path(buf);
}
+char *repo_git_path(const struct repository *repo,
+ const char *fmt, ...)
+{
+ struct strbuf path = STRBUF_INIT;
+ va_list args;
+ va_start(args, fmt);
+ do_git_path(repo, NULL, &path, fmt, args);
+ va_end(args);
+ return strbuf_detach(&path, NULL);
+}
+
+void strbuf_repo_git_path(struct strbuf *sb,
+ const struct repository *repo,
+ const char *fmt, ...)
+{
+ va_list args;
+ va_start(args, fmt);
+ do_git_path(repo, NULL, sb, fmt, args);
+ va_end(args);
+}
+
char *git_path_buf(struct strbuf *buf, const char *fmt, ...)
{
va_list args;
strbuf_reset(buf);
va_start(args, fmt);
- do_git_path(NULL, buf, fmt, args);
+ do_git_path(the_repository, NULL, buf, fmt, args);
va_end(args);
return buf->buf;
}
{
va_list args;
va_start(args, fmt);
- do_git_path(NULL, sb, fmt, args);
+ do_git_path(the_repository, NULL, sb, fmt, args);
va_end(args);
}
struct strbuf *pathname = get_pathname();
va_list args;
va_start(args, fmt);
- do_git_path(NULL, pathname, fmt, args);
+ do_git_path(the_repository, NULL, pathname, fmt, args);
va_end(args);
return pathname->buf;
}
struct strbuf path = STRBUF_INIT;
va_list args;
va_start(args, fmt);
- do_git_path(NULL, &path, fmt, args);
+ do_git_path(the_repository, NULL, &path, fmt, args);
va_end(args);
return strbuf_detach(&path, NULL);
}
struct strbuf *pathname = get_pathname();
va_list args;
va_start(args, fmt);
- do_git_path(wt, pathname, fmt, args);
+ do_git_path(the_repository, wt, pathname, fmt, args);
va_end(args);
return pathname->buf;
}
+static void do_worktree_path(const struct repository *repo,
+ struct strbuf *buf,
+ const char *fmt, va_list args)
+{
+ strbuf_addstr(buf, repo->worktree);
+ if(buf->len && !is_dir_sep(buf->buf[buf->len - 1]))
+ strbuf_addch(buf, '/');
+
+ strbuf_vaddf(buf, fmt, args);
+ strbuf_cleanup_path(buf);
+}
+
+char *repo_worktree_path(const struct repository *repo, const char *fmt, ...)
+{
+ struct strbuf path = STRBUF_INIT;
+ va_list args;
+
+ if (!repo->worktree)
+ return NULL;
+
+ va_start(args, fmt);
+ do_worktree_path(repo, &path, fmt, args);
+ va_end(args);
+
+ return strbuf_detach(&path, NULL);
+}
+
+void strbuf_repo_worktree_path(struct strbuf *sb,
+ const struct repository *repo,
+ const char *fmt, ...)
+{
+ va_list args;
+
+ if (!repo->worktree)
+ return;
+
+ va_start(args, fmt);
+ do_worktree_path(repo, sb, fmt, args);
+ va_end(args);
+}
+
/* Returns 0 on success, negative on failure. */
static int do_submodule_path(struct strbuf *buf, const char *path,
const char *fmt, va_list args)
return err;
}
-static void do_git_common_path(struct strbuf *buf,
+static void do_git_common_path(const struct repository *repo,
+ struct strbuf *buf,
const char *fmt,
va_list args)
{
- strbuf_addstr(buf, get_git_common_dir());
+ strbuf_addstr(buf, repo->commondir);
if (buf->len && !is_dir_sep(buf->buf[buf->len - 1]))
strbuf_addch(buf, '/');
strbuf_vaddf(buf, fmt, args);
struct strbuf *pathname = get_pathname();
va_list args;
va_start(args, fmt);
- do_git_common_path(pathname, fmt, args);
+ do_git_common_path(the_repository, pathname, fmt, args);
va_end(args);
return pathname->buf;
}
-void strbuf_git_common_path(struct strbuf *sb, const char *fmt, ...)
+void strbuf_git_common_path(struct strbuf *sb,
+ const struct repository *repo,
+ const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
- do_git_common_path(sb, fmt, args);
+ do_git_common_path(repo, sb, fmt, args);
va_end(args);
}
int validate_headref(const char *path)
{
struct stat st;
- char *buf, buffer[256];
- unsigned char sha1[20];
+ char buffer[256];
+ const char *refname;
+ struct object_id oid;
int fd;
ssize_t len;
len = read_in_full(fd, buffer, sizeof(buffer)-1);
close(fd);
+ if (len < 0)
+ return -1;
+ buffer[len] = '\0';
+
/*
* Is it a symbolic ref?
*/
- if (len < 4)
- return -1;
- if (!memcmp("ref:", buffer, 4)) {
- buf = buffer + 4;
- len -= 4;
- while (len && isspace(*buf))
- buf++, len--;
- if (len >= 5 && !memcmp("refs/", buf, 5))
+ if (skip_prefix(buffer, "ref:", &refname)) {
+ while (isspace(*refname))
+ refname++;
+ if (starts_with(refname, "refs/"))
return 0;
}
/*
* Is this a detached HEAD?
*/
- if (!get_sha1_hex(buffer, sha1))
+ if (!get_oid_hex(buffer, &oid))
return 0;
return -1;
if (!home)
goto return_null;
if (real_home)
- strbuf_addstr(&user_path, real_path(home));
+ strbuf_add_real_path(&user_path, home);
else
strbuf_addstr(&user_path, home);
#ifdef GIT_WINDOWS_NATIVE
}
}
-static int only_spaces_and_periods(const char *path, size_t len, size_t skip)
+/*
+ * On NTFS, we need to be careful to disallow certain synonyms of the `.git/`
+ * directory:
+ *
+ * - For historical reasons, file names that end in spaces or periods are
+ * automatically trimmed. Therefore, `.git . . ./` is a valid way to refer
+ * to `.git/`.
+ *
+ * - For other historical reasons, file names that do not conform to the 8.3
+ * format (up to eight characters for the basename, three for the file
+ * extension, certain characters not allowed such as `+`, etc) are associated
+ * with a so-called "short name", at least on the `C:` drive by default.
+ * Which means that `git~1/` is a valid way to refer to `.git/`.
+ *
+ * Note: Technically, `.git/` could receive the short name `git~2` if the
+ * short name `git~1` were already used. In Git, however, we guarantee that
+ * `.git` is the first item in a directory, therefore it will be associated
+ * with the short name `git~1` (unless short names are disabled).
+ *
+ * - For yet other historical reasons, NTFS supports so-called "Alternate Data
+ * Streams", i.e. metadata associated with a given file, referred to via
+ * `<filename>:<stream-name>:<stream-type>`. There exists a default stream
+ * type for directories, allowing `.git/` to be accessed via
+ * `.git::$INDEX_ALLOCATION/`.
+ *
+ * When this function returns 1, it indicates that the specified file/directory
+ * name refers to a `.git` file or directory, or to any of these synonyms, and
+ * Git should therefore not track it.
+ *
+ * For performance reasons, _all_ Alternate Data Streams of `.git/` are
+ * forbidden, not just `::$INDEX_ALLOCATION`.
+ *
+ * This function is intended to be used by `git fsck` even on platforms where
+ * the backslash is a regular filename character, therefore it needs to handle
+ * backlash characters in the provided `name` specially: they are interpreted
+ * as directory separators.
+ */
+int is_ntfs_dotgit(const char *name)
{
- if (len < skip)
+ char c;
+
+ /*
+ * Note that when we don't find `.git` or `git~1` we end up with `name`
+ * advanced partway through the string. That's okay, though, as we
+ * return immediately in those cases, without looking at `name` any
+ * further.
+ */
+ c = *(name++);
+ if (c == '.') {
+ /* .git */
+ if (((c = *(name++)) != 'g' && c != 'G') ||
+ ((c = *(name++)) != 'i' && c != 'I') ||
+ ((c = *(name++)) != 't' && c != 'T'))
+ return 0;
+ } else if (c == 'g' || c == 'G') {
+ /* git ~1 */
+ if (((c = *(name++)) != 'i' && c != 'I') ||
+ ((c = *(name++)) != 't' && c != 'T') ||
+ *(name++) != '~' ||
+ *(name++) != '1')
+ return 0;
+ } else
return 0;
- len -= skip;
- path += skip;
- while (len-- > 0) {
- char c = *(path++);
- if (c != ' ' && c != '.')
+
+ for (;;) {
+ c = *(name++);
+ if (!c || c == '\\' || c == '/' || c == ':')
+ return 1;
+ if (c != '.' && c != ' ')
return 0;
}
- return 1;
}
-int is_ntfs_dotgit(const char *name)
+static int is_ntfs_dot_generic(const char *name,
+ const char *dotgit_name,
+ size_t len,
+ const char *dotgit_ntfs_shortname_prefix)
{
- size_t len;
-
- for (len = 0; ; len++)
- if (!name[len] || name[len] == '\\' || is_dir_sep(name[len])) {
- if (only_spaces_and_periods(name, len, 4) &&
- !strncasecmp(name, ".git", 4))
+ int saw_tilde;
+ size_t i;
+
+ if ((name[0] == '.' && !strncasecmp(name + 1, dotgit_name, len))) {
+ i = len + 1;
+only_spaces_and_periods:
+ for (;;) {
+ char c = name[i++];
+ if (!c || c == ':')
return 1;
- if (only_spaces_and_periods(name, len, 5) &&
- !strncasecmp(name, "git~1", 5))
- return 1;
- if (name[len] != '\\')
+ if (c != ' ' && c != '.')
return 0;
- name += len + 1;
- len = -1;
}
+ }
+
+ /*
+ * Is it a regular NTFS short name, i.e. shortened to 6 characters,
+ * followed by ~1, ... ~4?
+ */
+ if (!strncasecmp(name, dotgit_name, 6) && name[6] == '~' &&
+ name[7] >= '1' && name[7] <= '4') {
+ i = 8;
+ goto only_spaces_and_periods;
+ }
+
+ /*
+ * Is it a fall-back NTFS short name (for details, see
+ * https://en.wikipedia.org/wiki/8.3_filename?
+ */
+ for (i = 0, saw_tilde = 0; i < 8; i++)
+ if (name[i] == '\0')
+ return 0;
+ else if (saw_tilde) {
+ if (name[i] < '0' || name[i] > '9')
+ return 0;
+ } else if (name[i] == '~') {
+ if (name[++i] < '1' || name[i] > '9')
+ return 0;
+ saw_tilde = 1;
+ } else if (i >= 6)
+ return 0;
+ else if (name[i] < 0) {
+ /*
+ * We know our needles contain only ASCII, so we clamp
+ * here to make the results of tolower() sane.
+ */
+ return 0;
+ } else if (tolower(name[i]) != dotgit_ntfs_shortname_prefix[i])
+ return 0;
+
+ goto only_spaces_and_periods;
+}
+
+/*
+ * Inline helper to make sure compiler resolves strlen() on literals at
+ * compile time.
+ */
+static inline int is_ntfs_dot_str(const char *name, const char *dotgit_name,
+ const char *dotgit_ntfs_shortname_prefix)
+{
+ return is_ntfs_dot_generic(name, dotgit_name, strlen(dotgit_name),
+ dotgit_ntfs_shortname_prefix);
+}
+
+int is_ntfs_dotgitmodules(const char *name)
+{
+ return is_ntfs_dot_str(name, "gitmodules", "gi7eba");
+}
+
+int is_ntfs_dotgitignore(const char *name)
+{
+ return is_ntfs_dot_str(name, "gitignore", "gi250a");
+}
+
+int is_ntfs_dotgitattributes(const char *name)
+{
+ return is_ntfs_dot_str(name, "gitattributes", "gi7d29");
}
int looks_like_command_line_option(const char *str)
projects / thirdparty / git.git / blobdiff