int git_deflate(git_zstream *, int flush);
unsigned long git_deflate_bound(git_zstream *, unsigned long);
+/* The length in bytes and in hex digits of an object name (SHA-1 value). */
+#define GIT_SHA1_RAWSZ 20
+#define GIT_SHA1_HEXSZ (2 * GIT_SHA1_RAWSZ)
+
+struct object_id {
+ unsigned char hash[GIT_SHA1_RAWSZ];
+};
+
#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
#define DTYPE(de) ((de)->d_type)
#else
#define RESOLVE_UNDO_CHANGED (1 << 4)
#define CACHE_TREE_CHANGED (1 << 5)
#define SPLIT_INDEX_ORDERED (1 << 6)
+ #define UNTRACKED_CHANGED (1 << 7)
struct split_index;
+ struct untracked_cache;
+
struct index_state {
struct cache_entry **cache;
unsigned int version;
struct hashmap name_hash;
struct hashmap dir_hash;
unsigned char sha1[20];
+ struct untracked_cache *untracked;
};
extern struct index_state the_index;
/* Double-check local_repo_env below if you add to this list. */
#define GIT_DIR_ENVIRONMENT "GIT_DIR"
+#define GIT_COMMON_DIR_ENVIRONMENT "GIT_COMMON_DIR"
#define GIT_NAMESPACE_ENVIRONMENT "GIT_NAMESPACE"
#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
#define GIT_PREFIX_ENVIRONMENT "GIT_PREFIX"
extern char *git_work_tree_cfg;
extern int is_inside_work_tree(void);
extern const char *get_git_dir(void);
+extern const char *get_git_common_dir(void);
extern int is_git_directory(const char *path);
extern char *get_object_directory(void);
extern char *get_index_file(void);
extern char *get_graft_file(void);
extern int set_git_dir(const char *path);
+extern int get_common_dir(struct strbuf *sb, const char *gitdir);
extern const char *get_git_namespace(void);
extern const char *strip_namespace(const char *namespaced_ref);
extern const char *get_git_work_tree(void);
* INODE_CHANGED, and DATA_CHANGED.
*/
extern int match_stat_data(const struct stat_data *sd, struct stat *st);
+ extern int match_stat_data_racy(const struct index_state *istate,
+ const struct stat_data *sd, struct stat *st);
extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
extern int precomposed_unicode;
extern int protect_hfs;
extern int protect_ntfs;
+extern int git_db_env, git_index_env, git_graft_env, git_common_dir_env;
+
+/*
+ * Include broken refs in all ref iterations, which will
+ * generally choke dangerous operations rather than letting
+ * them silently proceed without taking the broken ref into
+ * account.
+ */
+extern int ref_paranoia;
/*
* The character that begins a commented line in user-editable file
extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
__attribute__((format (printf, 3, 4)));
-extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
- __attribute__((format (printf, 3, 4)));
+extern void strbuf_git_path(struct strbuf *sb, const char *fmt, ...)
+ __attribute__((format (printf, 2, 3)));
extern char *git_pathdup(const char *fmt, ...)
__attribute__((format (printf, 1, 2)));
extern char *mkpathdup(const char *fmt, ...)
__attribute__((format (printf, 1, 2)));
/* Return a statically allocated filename matching the sha1 signature */
-extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
-extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
-extern char *git_path_submodule(const char *path, const char *fmt, ...)
+extern const char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
+extern const char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
+extern const char *git_path_submodule(const char *path, const char *fmt, ...)
__attribute__((format (printf, 2, 3)));
+extern void report_linked_checkout_garbage(void);
/*
* Return the name of the file in the local object database that would
extern char *sha1_pack_index_name(const unsigned char *sha1);
extern const char *find_unique_abbrev(const unsigned char *sha1, int);
-extern const unsigned char null_sha1[20];
+extern const unsigned char null_sha1[GIT_SHA1_RAWSZ];
static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
{
int i;
- for (i = 0; i < 20; i++, sha1++, sha2++) {
+ for (i = 0; i < GIT_SHA1_RAWSZ; i++, sha1++, sha2++) {
if (*sha1 != *sha2)
return *sha1 - *sha2;
}
return 0;
}
+static inline int oidcmp(const struct object_id *oid1, const struct object_id *oid2)
+{
+ return hashcmp(oid1->hash, oid2->hash);
+}
+
static inline int is_null_sha1(const unsigned char *sha1)
{
return !hashcmp(sha1, null_sha1);
}
+static inline int is_null_oid(const struct object_id *oid)
+{
+ return !hashcmp(oid->hash, null_sha1);
+}
+
static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
{
- memcpy(sha_dst, sha_src, 20);
+ memcpy(sha_dst, sha_src, GIT_SHA1_RAWSZ);
+}
+
+static inline void oidcpy(struct object_id *dst, const struct object_id *src)
+{
+ hashcpy(dst->hash, src->hash);
}
+
static inline void hashclr(unsigned char *hash)
{
- memset(hash, 0, 20);
+ memset(hash, 0, GIT_SHA1_RAWSZ);
}
+static inline void oidclr(struct object_id *oid)
+{
+ hashclr(oid->hash);
+}
+
+
#define EMPTY_TREE_SHA1_HEX \
"4b825dc642cb6eb9a060e54bf8d69288fbee4904"
#define EMPTY_TREE_SHA1_BIN_LITERAL \
enum scld_error safe_create_leading_directories_const(const char *path);
int mkdir_in_gitdir(const char *path);
-extern void home_config_paths(char **global, char **xdg, char *file);
extern char *expand_user_path(const char *path);
const char *enter_repo(const char *path, int strict);
static inline int is_absolute_path(const char *path)
int daemon_avoid_alias(const char *path);
extern int is_ntfs_dotgit(const char *name);
+/**
+ * Return a newly allocated string with the evaluation of
+ * "$XDG_CONFIG_HOME/git/$filename" if $XDG_CONFIG_HOME is non-empty, otherwise
+ * "$HOME/.config/git/$filename". Return NULL upon error.
+ */
+extern char *xdg_config_home(const char *filename);
+
/* object replacement */
#define LOOKUP_REPLACE_OBJECT 1
+#define LOOKUP_UNKNOWN_OBJECT 2
extern void *read_sha1_file_extended(const unsigned char *sha1, enum object_type *type, unsigned long *size, unsigned flag);
static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
{
extern int sha1_object_info(const unsigned char *, unsigned long *);
extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
+extern int hash_sha1_file_literally(const void *buf, unsigned long len, const char *type, unsigned char *sha1, unsigned flags);
extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
extern int force_object_loose(const unsigned char *sha1, time_t mtime);
extern int git_open_noatime(const char *name);
* null-terminated string.
*/
extern int get_sha1_hex(const char *hex, unsigned char *sha1);
+extern int get_oid_hex(const char *hex, struct object_id *sha1);
extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
+extern char *oid_to_hex(const struct object_id *oid); /* same static buffer as sha1_to_hex */
extern int read_ref_full(const char *refname, int resolve_flags,
unsigned char *sha1, int *flags);
extern int read_ref(const char *refname, unsigned char *sha1);
int pack_fd;
unsigned pack_local:1,
pack_keep:1,
+ freshened:1,
do_not_close:1;
unsigned char sha1[20];
/* something like ".git/objects/pack/xxxxx.pack" */
/*
* Iterate over loose and packed objects in both the local
- * repository and any alternates repositories.
+ * repository and any alternates repositories (unless the
+ * LOCAL_ONLY flag is set).
*/
+#define FOR_EACH_OBJECT_LOCAL_ONLY 0x1
typedef int each_packed_object_fn(const unsigned char *sha1,
struct packed_git *pack,
uint32_t pos,
void *data);
-extern int for_each_loose_object(each_loose_object_fn, void *);
-extern int for_each_packed_object(each_packed_object_fn, void *);
+extern int for_each_loose_object(each_loose_object_fn, void *, unsigned flags);
+extern int for_each_packed_object(each_packed_object_fn, void *, unsigned flags);
struct object_info {
/* Request */
unsigned long *sizep;
unsigned long *disk_sizep;
unsigned char *delta_base_sha1;
+ struct strbuf *typename;
/* Response */
enum {
extern void maybe_flush_or_die(FILE *, const char *);
__attribute__((format (printf, 2, 3)))
extern void fprintf_or_die(FILE *, const char *fmt, ...);
+
+#define COPY_READ_ERROR (-2)
+#define COPY_WRITE_ERROR (-3)
extern int copy_fd(int ifd, int ofd);
extern int copy_file(const char *dst, const char *src, int mode);
extern int copy_file_with_time(const char *dst, const char *src, int mode);
+
extern void write_or_die(int fd, const void *buf, size_t count);
extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
{
return write_in_full(fd, str, strlen(str));
}
+__attribute__((format (printf, 3, 4)))
+extern int write_file(const char *path, int fatal, const char *fmt, ...);
/* pager.c */
extern void setup_pager(void);
#define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
/* ls-files */
-int report_path_error(const char *ps_matched, const struct pathspec *pathspec, const char *prefix);
void overlay_tree_on_cache(const char *tree_name, const char *prefix);
char *alias_lookup(const char *alias);
#include "refs.h"
#include "wildmatch.h"
#include "pathspec.h"
+#include "utf8.h"
+ #include "varint.h"
+ #include "ewah/ewok.h"
struct path_simplify {
int len;
path_untracked
};
+ /*
+ * Support data structure for our opendir/readdir/closedir wrappers
+ */
+ struct cached_dir {
+ DIR *fdir;
+ struct untracked_cache_dir *untracked;
+ int nr_files;
+ int nr_dirs;
+
+ struct dirent *de;
+ const char *file;
+ struct untracked_cache_dir *ucd;
+ };
+
static enum path_treatment read_directory_recursive(struct dir_struct *dir,
- const char *path, int len,
+ const char *path, int len, struct untracked_cache_dir *untracked,
int check_only, const struct path_simplify *simplify);
static int get_dtype(struct dirent *de, const char *path, int len);
return negative ? 0 : positive;
}
+int report_path_error(const char *ps_matched,
+ const struct pathspec *pathspec,
+ const char *prefix)
+{
+ /*
+ * Make sure all pathspec matched; otherwise it is an error.
+ */
+ struct strbuf sb = STRBUF_INIT;
+ int num, errors = 0;
+ for (num = 0; num < pathspec->nr; num++) {
+ int other, found_dup;
+
+ if (ps_matched[num])
+ continue;
+ /*
+ * The caller might have fed identical pathspec
+ * twice. Do not barf on such a mistake.
+ * FIXME: parse_pathspec should have eliminated
+ * duplicate pathspec.
+ */
+ for (found_dup = other = 0;
+ !found_dup && other < pathspec->nr;
+ other++) {
+ if (other == num || !ps_matched[other])
+ continue;
+ if (!strcmp(pathspec->items[other].original,
+ pathspec->items[num].original))
+ /*
+ * Ok, we have a match already.
+ */
+ found_dup = 1;
+ }
+ if (found_dup)
+ continue;
+
+ error("pathspec '%s' did not match any file(s) known to git.",
+ pathspec->items[num].original);
+ errors++;
+ }
+ strbuf_release(&sb);
+ return errors;
+}
+
/*
* Return the length of the "simple" part of a path match limiter.
*/
x->el = el;
}
- static void *read_skip_worktree_file_from_index(const char *path, size_t *size)
+ static void *read_skip_worktree_file_from_index(const char *path, size_t *size,
+ struct sha1_stat *sha1_stat)
{
int pos, len;
unsigned long sz;
return NULL;
}
*size = xsize_t(sz);
+ if (sha1_stat) {
+ memset(&sha1_stat->stat, 0, sizeof(sha1_stat->stat));
+ hashcpy(sha1_stat->sha1, active_cache[pos]->sha1);
+ }
return data;
}
*last_space = '\0';
}
- int add_excludes_from_file_to_list(const char *fname,
- const char *base,
- int baselen,
- struct exclude_list *el,
- int check_index)
+ /*
+ * Given a subdirectory name and "dir" of the current directory,
+ * search the subdir in "dir" and return it, or create a new one if it
+ * does not exist in "dir".
+ *
+ * If "name" has the trailing slash, it'll be excluded in the search.
+ */
+ static struct untracked_cache_dir *lookup_untracked(struct untracked_cache *uc,
+ struct untracked_cache_dir *dir,
+ const char *name, int len)
+ {
+ int first, last;
+ struct untracked_cache_dir *d;
+ if (!dir)
+ return NULL;
+ if (len && name[len - 1] == '/')
+ len--;
+ first = 0;
+ last = dir->dirs_nr;
+ while (last > first) {
+ int cmp, next = (last + first) >> 1;
+ d = dir->dirs[next];
+ cmp = strncmp(name, d->name, len);
+ if (!cmp && strlen(d->name) > len)
+ cmp = -1;
+ if (!cmp)
+ return d;
+ if (cmp < 0) {
+ last = next;
+ continue;
+ }
+ first = next+1;
+ }
+
+ uc->dir_created++;
+ d = xmalloc(sizeof(*d) + len + 1);
+ memset(d, 0, sizeof(*d));
+ memcpy(d->name, name, len);
+ d->name[len] = '\0';
+
+ ALLOC_GROW(dir->dirs, dir->dirs_nr + 1, dir->dirs_alloc);
+ memmove(dir->dirs + first + 1, dir->dirs + first,
+ (dir->dirs_nr - first) * sizeof(*dir->dirs));
+ dir->dirs_nr++;
+ dir->dirs[first] = d;
+ return d;
+ }
+
+ static void do_invalidate_gitignore(struct untracked_cache_dir *dir)
+ {
+ int i;
+ dir->valid = 0;
+ dir->untracked_nr = 0;
+ for (i = 0; i < dir->dirs_nr; i++)
+ do_invalidate_gitignore(dir->dirs[i]);
+ }
+
+ static void invalidate_gitignore(struct untracked_cache *uc,
+ struct untracked_cache_dir *dir)
+ {
+ uc->gitignore_invalidated++;
+ do_invalidate_gitignore(dir);
+ }
+
+ static void invalidate_directory(struct untracked_cache *uc,
+ struct untracked_cache_dir *dir)
+ {
+ int i;
+ uc->dir_invalidated++;
+ dir->valid = 0;
+ dir->untracked_nr = 0;
+ for (i = 0; i < dir->dirs_nr; i++)
+ dir->dirs[i]->recurse = 0;
+ }
+
+ /*
+ * Given a file with name "fname", read it (either from disk, or from
+ * the index if "check_index" is non-zero), parse it and store the
+ * exclude rules in "el".
+ *
+ * If "ss" is not NULL, compute SHA-1 of the exclude file and fill
+ * stat data from disk (only valid if add_excludes returns zero). If
+ * ss_valid is non-zero, "ss" must contain good value as input.
+ */
+ static int add_excludes(const char *fname, const char *base, int baselen,
+ struct exclude_list *el, int check_index,
+ struct sha1_stat *sha1_stat)
{
struct stat st;
int fd, i, lineno = 1;
if (0 <= fd)
close(fd);
if (!check_index ||
- (buf = read_skip_worktree_file_from_index(fname, &size)) == NULL)
+ (buf = read_skip_worktree_file_from_index(fname, &size, sha1_stat)) == NULL)
return -1;
if (size == 0) {
free(buf);
} else {
size = xsize_t(st.st_size);
if (size == 0) {
+ if (sha1_stat) {
+ fill_stat_data(&sha1_stat->stat, &st);
+ hashcpy(sha1_stat->sha1, EMPTY_BLOB_SHA1_BIN);
+ sha1_stat->valid = 1;
+ }
close(fd);
return 0;
}
}
buf[size++] = '\n';
close(fd);
+ if (sha1_stat) {
+ int pos;
+ if (sha1_stat->valid &&
+ !match_stat_data_racy(&the_index, &sha1_stat->stat, &st))
+ ; /* no content change, ss->sha1 still good */
+ else if (check_index &&
+ (pos = cache_name_pos(fname, strlen(fname))) >= 0 &&
+ !ce_stage(active_cache[pos]) &&
+ ce_uptodate(active_cache[pos]) &&
+ !would_convert_to_git(fname))
+ hashcpy(sha1_stat->sha1, active_cache[pos]->sha1);
+ else
+ hash_sha1_file(buf, size, "blob", sha1_stat->sha1);
+ fill_stat_data(&sha1_stat->stat, &st);
+ sha1_stat->valid = 1;
+ }
}
el->filebuf = buf;
+
+ if (skip_utf8_bom(&buf, size))
+ size -= buf - el->filebuf;
+
entry = buf;
+
for (i = 0; i < size; i++) {
if (buf[i] == '\n') {
if (entry != buf + i && entry[0] != '#') {
return 0;
}
+ int add_excludes_from_file_to_list(const char *fname, const char *base,
+ int baselen, struct exclude_list *el,
+ int check_index)
+ {
+ return add_excludes(fname, base, baselen, el, check_index, NULL);
+ }
+
struct exclude_list *add_exclude_list(struct dir_struct *dir,
int group_type, const char *src)
{
/*
* Used to set up core.excludesfile and .git/info/exclude lists.
*/
- void add_excludes_from_file(struct dir_struct *dir, const char *fname)
+ static void add_excludes_from_file_1(struct dir_struct *dir, const char *fname,
+ struct sha1_stat *sha1_stat)
{
struct exclude_list *el;
+ /*
+ * catch setup_standard_excludes() that's called before
+ * dir->untracked is assigned. That function behaves
+ * differently when dir->untracked is non-NULL.
+ */
+ if (!dir->untracked)
+ dir->unmanaged_exclude_files++;
el = add_exclude_list(dir, EXC_FILE, fname);
- if (add_excludes_from_file_to_list(fname, "", 0, el, 0) < 0)
+ if (add_excludes(fname, "", 0, el, 0, sha1_stat) < 0)
die("cannot use %s as an exclude file", fname);
}
+ void add_excludes_from_file(struct dir_struct *dir, const char *fname)
+ {
+ dir->unmanaged_exclude_files++; /* see validate_untracked_cache() */
+ add_excludes_from_file_1(dir, fname, NULL);
+ }
+
int match_basename(const char *basename, int basenamelen,
const char *pattern, int prefix, int patternlen,
int flags)
struct exclude_list_group *group;
struct exclude_list *el;
struct exclude_stack *stk = NULL;
+ struct untracked_cache_dir *untracked;
int current;
group = &dir->exclude_list_group[EXC_DIRS];
/* Read from the parent directories and push them down. */
current = stk ? stk->baselen : -1;
strbuf_setlen(&dir->basebuf, current < 0 ? 0 : current);
+ if (dir->untracked)
+ untracked = stk ? stk->ucd : dir->untracked->root;
+ else
+ untracked = NULL;
+
while (current < baselen) {
const char *cp;
+ struct sha1_stat sha1_stat;
stk = xcalloc(1, sizeof(*stk));
if (current < 0) {
if (!cp)
die("oops in prep_exclude");
cp++;
+ untracked =
+ lookup_untracked(dir->untracked, untracked,
+ base + current,
+ cp - base - current);
}
stk->prev = dir->exclude_stack;
stk->baselen = cp - base;
stk->exclude_ix = group->nr;
+ stk->ucd = untracked;
el = add_exclude_list(dir, EXC_DIRS, NULL);
strbuf_add(&dir->basebuf, base + current, stk->baselen - current);
assert(stk->baselen == dir->basebuf.len);
}
/* Try to read per-directory file */
- if (dir->exclude_per_dir) {
+ hashclr(sha1_stat.sha1);
+ sha1_stat.valid = 0;
+ if (dir->exclude_per_dir &&
+ /*
+ * If we know that no files have been added in
+ * this directory (i.e. valid_cached_dir() has
+ * been executed and set untracked->valid) ..
+ */
+ (!untracked || !untracked->valid ||
+ /*
+ * .. and .gitignore does not exist before
+ * (i.e. null exclude_sha1 and skip_worktree is
+ * not set). Then we can skip loading .gitignore,
+ * which would result in ENOENT anyway.
+ * skip_worktree is taken care in read_directory()
+ */
+ !is_null_sha1(untracked->exclude_sha1))) {
/*
* dir->basebuf gets reused by the traversal, but we
* need fname to remain unchanged to ensure the src
strbuf_addbuf(&sb, &dir->basebuf);
strbuf_addstr(&sb, dir->exclude_per_dir);
el->src = strbuf_detach(&sb, NULL);
- add_excludes_from_file_to_list(el->src, el->src,
- stk->baselen, el, 1);
+ add_excludes(el->src, el->src, stk->baselen, el, 1,
+ untracked ? &sha1_stat : NULL);
+ }
+ /*
+ * NEEDSWORK: when untracked cache is enabled, prep_exclude()
+ * will first be called in valid_cached_dir() then maybe many
+ * times more in last_exclude_matching(). When the cache is
+ * used, last_exclude_matching() will not be called and
+ * reading .gitignore content will be a waste.
+ *
+ * So when it's called by valid_cached_dir() and we can get
+ * .gitignore SHA-1 from the index (i.e. .gitignore is not
+ * modified on work tree), we could delay reading the
+ * .gitignore content until we absolutely need it in
+ * last_exclude_matching(). Be careful about ignore rule
+ * order, though, if you do that.
+ */
+ if (untracked &&
+ hashcmp(sha1_stat.sha1, untracked->exclude_sha1)) {
+ invalidate_gitignore(dir->untracked, untracked);
+ hashcpy(untracked->exclude_sha1, sha1_stat.sha1);
}
dir->exclude_stack = stk;
current = stk->baselen;
* (c) otherwise, we recurse into it.
*/
static enum path_treatment treat_directory(struct dir_struct *dir,
+ struct untracked_cache_dir *untracked,
const char *dirname, int len, int exclude,
const struct path_simplify *simplify)
{
if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))
return exclude ? path_excluded : path_untracked;
- return read_directory_recursive(dir, dirname, len, 1, simplify);
+ untracked = lookup_untracked(dir->untracked, untracked, dirname, len);
+ return read_directory_recursive(dir, dirname, len,
+ untracked, 1, simplify);
}
/*
}
static enum path_treatment treat_one_path(struct dir_struct *dir,
+ struct untracked_cache_dir *untracked,
struct strbuf *path,
const struct path_simplify *simplify,
int dtype, struct dirent *de)
return path_none;
case DT_DIR:
strbuf_addch(path, '/');
- return treat_directory(dir, path->buf, path->len, exclude,
+ return treat_directory(dir, untracked, path->buf, path->len, exclude,
simplify);
case DT_REG:
case DT_LNK:
}
}
+ static enum path_treatment treat_path_fast(struct dir_struct *dir,
+ struct untracked_cache_dir *untracked,
+ struct cached_dir *cdir,
+ struct strbuf *path,
+ int baselen,
+ const struct path_simplify *simplify)
+ {
+ strbuf_setlen(path, baselen);
+ if (!cdir->ucd) {
+ strbuf_addstr(path, cdir->file);
+ return path_untracked;
+ }
+ strbuf_addstr(path, cdir->ucd->name);
+ /* treat_one_path() does this before it calls treat_directory() */
+ if (path->buf[path->len - 1] != '/')
+ strbuf_addch(path, '/');
+ if (cdir->ucd->check_only)
+ /*
+ * check_only is set as a result of treat_directory() getting
+ * to its bottom. Verify again the same set of directories
+ * with check_only set.
+ */
+ return read_directory_recursive(dir, path->buf, path->len,
+ cdir->ucd, 1, simplify);
+ /*
+ * We get path_recurse in the first run when
+ * directory_exists_in_index() returns index_nonexistent. We
+ * are sure that new changes in the index does not impact the
+ * outcome. Return now.
+ */
+ return path_recurse;
+ }
+
static enum path_treatment treat_path(struct dir_struct *dir,
- struct dirent *de,
+ struct untracked_cache_dir *untracked,
+ struct cached_dir *cdir,
struct strbuf *path,
int baselen,
const struct path_simplify *simplify)
{
int dtype;
+ struct dirent *de = cdir->de;
+ if (!de)
+ return treat_path_fast(dir, untracked, cdir, path,
+ baselen, simplify);
if (is_dot_or_dotdot(de->d_name) || !strcmp(de->d_name, ".git"))
return path_none;
strbuf_setlen(path, baselen);
return path_none;
dtype = DTYPE(de);
- return treat_one_path(dir, path, simplify, dtype, de);
+ return treat_one_path(dir, untracked, path, simplify, dtype, de);
+ }
+
+ static void add_untracked(struct untracked_cache_dir *dir, const char *name)
+ {
+ if (!dir)
+ return;
+ ALLOC_GROW(dir->untracked, dir->untracked_nr + 1,
+ dir->untracked_alloc);
+ dir->untracked[dir->untracked_nr++] = xstrdup(name);
+ }
+
+ static int valid_cached_dir(struct dir_struct *dir,
+ struct untracked_cache_dir *untracked,
+ struct strbuf *path,
+ int check_only)
+ {
+ struct stat st;
+
+ if (!untracked)
+ return 0;
+
+ if (stat(path->len ? path->buf : ".", &st)) {
+ invalidate_directory(dir->untracked, untracked);
+ memset(&untracked->stat_data, 0, sizeof(untracked->stat_data));
+ return 0;
+ }
+ if (!untracked->valid ||
+ match_stat_data_racy(&the_index, &untracked->stat_data, &st)) {
+ if (untracked->valid)
+ invalidate_directory(dir->untracked, untracked);
+ fill_stat_data(&untracked->stat_data, &st);
+ return 0;
+ }
+
+ if (untracked->check_only != !!check_only) {
+ invalidate_directory(dir->untracked, untracked);
+ return 0;
+ }
+
+ /*
+ * prep_exclude will be called eventually on this directory,
+ * but it's called much later in last_exclude_matching(). We
+ * need it now to determine the validity of the cache for this
+ * path. The next calls will be nearly no-op, the way
+ * prep_exclude() is designed.
+ */
+ if (path->len && path->buf[path->len - 1] != '/') {
+ strbuf_addch(path, '/');
+ prep_exclude(dir, path->buf, path->len);
+ strbuf_setlen(path, path->len - 1);
+ } else
+ prep_exclude(dir, path->buf, path->len);
+
+ /* hopefully prep_exclude() haven't invalidated this entry... */
+ return untracked->valid;
+ }
+
+ static int open_cached_dir(struct cached_dir *cdir,
+ struct dir_struct *dir,
+ struct untracked_cache_dir *untracked,
+ struct strbuf *path,
+ int check_only)
+ {
+ memset(cdir, 0, sizeof(*cdir));
+ cdir->untracked = untracked;
+ if (valid_cached_dir(dir, untracked, path, check_only))
+ return 0;
+ cdir->fdir = opendir(path->len ? path->buf : ".");
+ if (dir->untracked)
+ dir->untracked->dir_opened++;
+ if (!cdir->fdir)
+ return -1;
+ return 0;
+ }
+
+ static int read_cached_dir(struct cached_dir *cdir)
+ {
+ if (cdir->fdir) {
+ cdir->de = readdir(cdir->fdir);
+ if (!cdir->de)
+ return -1;
+ return 0;
+ }
+ while (cdir->nr_dirs < cdir->untracked->dirs_nr) {
+ struct untracked_cache_dir *d = cdir->untracked->dirs[cdir->nr_dirs];
+ if (!d->recurse) {
+ cdir->nr_dirs++;
+ continue;
+ }
+ cdir->ucd = d;
+ cdir->nr_dirs++;
+ return 0;
+ }
+ cdir->ucd = NULL;
+ if (cdir->nr_files < cdir->untracked->untracked_nr) {
+ struct untracked_cache_dir *d = cdir->untracked;
+ cdir->file = d->untracked[cdir->nr_files++];
+ return 0;
+ }
+ return -1;
+ }
+
+ static void close_cached_dir(struct cached_dir *cdir)
+ {
+ if (cdir->fdir)
+ closedir(cdir->fdir);
+ /*
+ * We have gone through this directory and found no untracked
+ * entries. Mark it valid.
+ */
+ if (cdir->untracked) {
+ cdir->untracked->valid = 1;
+ cdir->untracked->recurse = 1;
+ }
}
/*
*/
static enum path_treatment read_directory_recursive(struct dir_struct *dir,
const char *base, int baselen,
- int check_only,
+ struct untracked_cache_dir *untracked, int check_only,
const struct path_simplify *simplify)
{
- DIR *fdir;
+ struct cached_dir cdir;
enum path_treatment state, subdir_state, dir_state = path_none;
- struct dirent *de;
struct strbuf path = STRBUF_INIT;
strbuf_add(&path, base, baselen);
- fdir = opendir(path.len ? path.buf : ".");
- if (!fdir)
+ if (open_cached_dir(&cdir, dir, untracked, &path, check_only))
goto out;
- while ((de = readdir(fdir)) != NULL) {
+ if (untracked)
+ untracked->check_only = !!check_only;
+
+ while (!read_cached_dir(&cdir)) {
/* check how the file or directory should be treated */
- state = treat_path(dir, de, &path, baselen, simplify);
+ state = treat_path(dir, untracked, &cdir, &path, baselen, simplify);
+
if (state > dir_state)
dir_state = state;
/* recurse into subdir if instructed by treat_path */
if (state == path_recurse) {
- subdir_state = read_directory_recursive(dir, path.buf,
- path.len, check_only, simplify);
+ struct untracked_cache_dir *ud;
+ ud = lookup_untracked(dir->untracked, untracked,
+ path.buf + baselen,
+ path.len - baselen);
+ subdir_state =
+ read_directory_recursive(dir, path.buf, path.len,
+ ud, check_only, simplify);
if (subdir_state > dir_state)
dir_state = subdir_state;
}
if (check_only) {
/* abort early if maximum state has been reached */
- if (dir_state == path_untracked)
+ if (dir_state == path_untracked) {
+ if (cdir.fdir)
+ add_untracked(untracked, path.buf + baselen);
break;
+ }
/* skip the dir_add_* part */
continue;
}
break;
case path_untracked:
- if (!(dir->flags & DIR_SHOW_IGNORED))
- dir_add_name(dir, path.buf, path.len);
+ if (dir->flags & DIR_SHOW_IGNORED)
+ break;
+ dir_add_name(dir, path.buf, path.len);
+ if (cdir.fdir)
+ add_untracked(untracked, path.buf + baselen);
break;
default:
break;
}
}
- closedir(fdir);
+ close_cached_dir(&cdir);
out:
strbuf_release(&path);
break;
if (simplify_away(sb.buf, sb.len, simplify))
break;
- if (treat_one_path(dir, &sb, simplify,
+ if (treat_one_path(dir, NULL, &sb, simplify,
DT_DIR, NULL) == path_none)
break; /* do not recurse into it */
if (len <= baselen) {
return rc;
}
+ static const char *get_ident_string(void)
+ {
+ static struct strbuf sb = STRBUF_INIT;
+ struct utsname uts;
+
+ if (sb.len)
+ return sb.buf;
+ if (uname(&uts))
+ die_errno(_("failed to get kernel name and information"));
+ strbuf_addf(&sb, "Location %s, system %s %s %s", get_git_work_tree(),
+ uts.sysname, uts.release, uts.version);
+ return sb.buf;
+ }
+
+ static int ident_in_untracked(const struct untracked_cache *uc)
+ {
+ const char *end = uc->ident.buf + uc->ident.len;
+ const char *p = uc->ident.buf;
+
+ for (p = uc->ident.buf; p < end; p += strlen(p) + 1)
+ if (!strcmp(p, get_ident_string()))
+ return 1;
+ return 0;
+ }
+
+ void add_untracked_ident(struct untracked_cache *uc)
+ {
+ if (ident_in_untracked(uc))
+ return;
+ strbuf_addstr(&uc->ident, get_ident_string());
+ /* this strbuf contains a list of strings, save NUL too */
+ strbuf_addch(&uc->ident, 0);
+ }
+
+ static struct untracked_cache_dir *validate_untracked_cache(struct dir_struct *dir,
+ int base_len,
+ const struct pathspec *pathspec)
+ {
+ struct untracked_cache_dir *root;
+ int i;
+
+ if (!dir->untracked || getenv("GIT_DISABLE_UNTRACKED_CACHE"))
+ return NULL;
+
+ /*
+ * We only support $GIT_DIR/info/exclude and core.excludesfile
+ * as the global ignore rule files. Any other additions
+ * (e.g. from command line) invalidate the cache. This
+ * condition also catches running setup_standard_excludes()
+ * before setting dir->untracked!
+ */
+ if (dir->unmanaged_exclude_files)
+ return NULL;
+
+ /*
+ * Optimize for the main use case only: whole-tree git
+ * status. More work involved in treat_leading_path() if we
+ * use cache on just a subset of the worktree. pathspec
+ * support could make the matter even worse.
+ */
+ if (base_len || (pathspec && pathspec->nr))
+ return NULL;
+
+ /* Different set of flags may produce different results */
+ if (dir->flags != dir->untracked->dir_flags ||
+ /*
+ * See treat_directory(), case index_nonexistent. Without
+ * this flag, we may need to also cache .git file content
+ * for the resolve_gitlink_ref() call, which we don't.
+ */
+ !(dir->flags & DIR_SHOW_OTHER_DIRECTORIES) ||
+ /* We don't support collecting ignore files */
+ (dir->flags & (DIR_SHOW_IGNORED | DIR_SHOW_IGNORED_TOO |
+ DIR_COLLECT_IGNORED)))
+ return NULL;
+
+ /*
+ * If we use .gitignore in the cache and now you change it to
+ * .gitexclude, everything will go wrong.
+ */
+ if (dir->exclude_per_dir != dir->untracked->exclude_per_dir &&
+ strcmp(dir->exclude_per_dir, dir->untracked->exclude_per_dir))
+ return NULL;
+
+ /*
+ * EXC_CMDL is not considered in the cache. If people set it,
+ * skip the cache.
+ */
+ if (dir->exclude_list_group[EXC_CMDL].nr)
+ return NULL;
+
+ /*
+ * An optimization in prep_exclude() does not play well with
+ * CE_SKIP_WORKTREE. It's a rare case anyway, if a single
+ * entry has that bit set, disable the whole untracked cache.
+ */
+ for (i = 0; i < active_nr; i++)
+ if (ce_skip_worktree(active_cache[i]))
+ return NULL;
+
+ if (!ident_in_untracked(dir->untracked)) {
+ warning(_("Untracked cache is disabled on this system."));
+ return NULL;
+ }
+
+ if (!dir->untracked->root) {
+ const int len = sizeof(*dir->untracked->root);
+ dir->untracked->root = xmalloc(len);
+ memset(dir->untracked->root, 0, len);
+ }
+
+ /* Validate $GIT_DIR/info/exclude and core.excludesfile */
+ root = dir->untracked->root;
+ if (hashcmp(dir->ss_info_exclude.sha1,
+ dir->untracked->ss_info_exclude.sha1)) {
+ invalidate_gitignore(dir->untracked, root);
+ dir->untracked->ss_info_exclude = dir->ss_info_exclude;
+ }
+ if (hashcmp(dir->ss_excludes_file.sha1,
+ dir->untracked->ss_excludes_file.sha1)) {
+ invalidate_gitignore(dir->untracked, root);
+ dir->untracked->ss_excludes_file = dir->ss_excludes_file;
+ }
+
+ /* Make sure this directory is not dropped out at saving phase */
+ root->recurse = 1;
+ return root;
+ }
+
int read_directory(struct dir_struct *dir, const char *path, int len, const struct pathspec *pathspec)
{
struct path_simplify *simplify;
+ struct untracked_cache_dir *untracked;
/*
* Check out create_simplify()
* create_simplify().
*/
simplify = create_simplify(pathspec ? pathspec->_raw : NULL);
+ untracked = validate_untracked_cache(dir, len, pathspec);
+ if (!untracked)
+ /*
+ * make sure untracked cache code path is disabled,
+ * e.g. prep_exclude()
+ */
+ dir->untracked = NULL;
if (!len || treat_leading_path(dir, path, len, simplify))
- read_directory_recursive(dir, path, len, 0, simplify);
+ read_directory_recursive(dir, path, len, untracked, 0, simplify);
free_simplify(simplify);
qsort(dir->entries, dir->nr, sizeof(struct dir_entry *), cmp_name);
qsort(dir->ignored, dir->ignored_nr, sizeof(struct dir_entry *), cmp_name);
+ if (dir->untracked) {
+ static struct trace_key trace_untracked_stats = TRACE_KEY_INIT(UNTRACKED_STATS);
+ trace_printf_key(&trace_untracked_stats,
+ "node creation: %u\n"
+ "gitignore invalidation: %u\n"
+ "directory invalidation: %u\n"
+ "opendir: %u\n",
+ dir->untracked->dir_created,
+ dir->untracked->gitignore_invalidated,
+ dir->untracked->dir_invalidated,
+ dir->untracked->dir_opened);
+ if (dir->untracked == the_index.untracked &&
+ (dir->untracked->dir_opened ||
+ dir->untracked->gitignore_invalidated ||
+ dir->untracked->dir_invalidated))
+ the_index.cache_changed |= UNTRACKED_CHANGED;
+ if (dir->untracked != the_index.untracked) {
+ free(dir->untracked);
+ dir->untracked = NULL;
+ }
+ }
return dir->nr;
}
void setup_standard_excludes(struct dir_struct *dir)
{
const char *path;
- char *xdg_path;
dir->exclude_per_dir = ".gitignore";
- add_excludes_from_file(dir, excludes_file);
+
+ /* core.excludefile defaulting to $XDG_HOME/git/ignore */
+ if (!excludes_file)
+ excludes_file = xdg_config_home("ignore");
+ if (excludes_file && !access_or_warn(excludes_file, R_OK, 0))
++ add_excludes_from_file_1(dir, excludes_file,
++ dir->untracked ? &dir->ss_excludes_file : NULL);
+
+ /* per repository user preference */
path = git_path("info/exclude");
- if (!excludes_file) {
- home_config_paths(NULL, &xdg_path, "ignore");
- excludes_file = xdg_path;
- }
if (!access_or_warn(path, R_OK, 0))
- add_excludes_from_file(dir, path);
+ add_excludes_from_file_1(dir, path,
+ dir->untracked ? &dir->ss_info_exclude : NULL);
- if (excludes_file && !access_or_warn(excludes_file, R_OK, 0))
- add_excludes_from_file_1(dir, excludes_file,
- dir->untracked ? &dir->ss_excludes_file : NULL);
}
int remove_path(const char *name)
}
strbuf_release(&dir->basebuf);
}
+
+ struct ondisk_untracked_cache {
+ struct stat_data info_exclude_stat;
+ struct stat_data excludes_file_stat;
+ uint32_t dir_flags;
+ unsigned char info_exclude_sha1[20];
+ unsigned char excludes_file_sha1[20];
+ char exclude_per_dir[FLEX_ARRAY];
+ };
+
+ #define ouc_size(len) (offsetof(struct ondisk_untracked_cache, exclude_per_dir) + len + 1)
+
+ struct write_data {
+ int index; /* number of written untracked_cache_dir */
+ struct ewah_bitmap *check_only; /* from untracked_cache_dir */
+ struct ewah_bitmap *valid; /* from untracked_cache_dir */
+ struct ewah_bitmap *sha1_valid; /* set if exclude_sha1 is not null */
+ struct strbuf out;
+ struct strbuf sb_stat;
+ struct strbuf sb_sha1;
+ };
+
+ static void stat_data_to_disk(struct stat_data *to, const struct stat_data *from)
+ {
+ to->sd_ctime.sec = htonl(from->sd_ctime.sec);
+ to->sd_ctime.nsec = htonl(from->sd_ctime.nsec);
+ to->sd_mtime.sec = htonl(from->sd_mtime.sec);
+ to->sd_mtime.nsec = htonl(from->sd_mtime.nsec);
+ to->sd_dev = htonl(from->sd_dev);
+ to->sd_ino = htonl(from->sd_ino);
+ to->sd_uid = htonl(from->sd_uid);
+ to->sd_gid = htonl(from->sd_gid);
+ to->sd_size = htonl(from->sd_size);
+ }
+
+ static void write_one_dir(struct untracked_cache_dir *untracked,
+ struct write_data *wd)
+ {
+ struct stat_data stat_data;
+ struct strbuf *out = &wd->out;
+ unsigned char intbuf[16];
+ unsigned int intlen, value;
+ int i = wd->index++;
+
+ /*
+ * untracked_nr should be reset whenever valid is clear, but
+ * for safety..
+ */
+ if (!untracked->valid) {
+ untracked->untracked_nr = 0;
+ untracked->check_only = 0;
+ }
+
+ if (untracked->check_only)
+ ewah_set(wd->check_only, i);
+ if (untracked->valid) {
+ ewah_set(wd->valid, i);
+ stat_data_to_disk(&stat_data, &untracked->stat_data);
+ strbuf_add(&wd->sb_stat, &stat_data, sizeof(stat_data));
+ }
+ if (!is_null_sha1(untracked->exclude_sha1)) {
+ ewah_set(wd->sha1_valid, i);
+ strbuf_add(&wd->sb_sha1, untracked->exclude_sha1, 20);
+ }
+
+ intlen = encode_varint(untracked->untracked_nr, intbuf);
+ strbuf_add(out, intbuf, intlen);
+
+ /* skip non-recurse directories */
+ for (i = 0, value = 0; i < untracked->dirs_nr; i++)
+ if (untracked->dirs[i]->recurse)
+ value++;
+ intlen = encode_varint(value, intbuf);
+ strbuf_add(out, intbuf, intlen);
+
+ strbuf_add(out, untracked->name, strlen(untracked->name) + 1);
+
+ for (i = 0; i < untracked->untracked_nr; i++)
+ strbuf_add(out, untracked->untracked[i],
+ strlen(untracked->untracked[i]) + 1);
+
+ for (i = 0; i < untracked->dirs_nr; i++)
+ if (untracked->dirs[i]->recurse)
+ write_one_dir(untracked->dirs[i], wd);
+ }
+
+ void write_untracked_extension(struct strbuf *out, struct untracked_cache *untracked)
+ {
+ struct ondisk_untracked_cache *ouc;
+ struct write_data wd;
+ unsigned char varbuf[16];
+ int len = 0, varint_len;
+ if (untracked->exclude_per_dir)
+ len = strlen(untracked->exclude_per_dir);
+ ouc = xmalloc(sizeof(*ouc) + len + 1);
+ stat_data_to_disk(&ouc->info_exclude_stat, &untracked->ss_info_exclude.stat);
+ stat_data_to_disk(&ouc->excludes_file_stat, &untracked->ss_excludes_file.stat);
+ hashcpy(ouc->info_exclude_sha1, untracked->ss_info_exclude.sha1);
+ hashcpy(ouc->excludes_file_sha1, untracked->ss_excludes_file.sha1);
+ ouc->dir_flags = htonl(untracked->dir_flags);
+ memcpy(ouc->exclude_per_dir, untracked->exclude_per_dir, len + 1);
+
+ varint_len = encode_varint(untracked->ident.len, varbuf);
+ strbuf_add(out, varbuf, varint_len);
+ strbuf_add(out, untracked->ident.buf, untracked->ident.len);
+
+ strbuf_add(out, ouc, ouc_size(len));
+ free(ouc);
+ ouc = NULL;
+
+ if (!untracked->root) {
+ varint_len = encode_varint(0, varbuf);
+ strbuf_add(out, varbuf, varint_len);
+ return;
+ }
+
+ wd.index = 0;
+ wd.check_only = ewah_new();
+ wd.valid = ewah_new();
+ wd.sha1_valid = ewah_new();
+ strbuf_init(&wd.out, 1024);
+ strbuf_init(&wd.sb_stat, 1024);
+ strbuf_init(&wd.sb_sha1, 1024);
+ write_one_dir(untracked->root, &wd);
+
+ varint_len = encode_varint(wd.index, varbuf);
+ strbuf_add(out, varbuf, varint_len);
+ strbuf_addbuf(out, &wd.out);
+ ewah_serialize_strbuf(wd.valid, out);
+ ewah_serialize_strbuf(wd.check_only, out);
+ ewah_serialize_strbuf(wd.sha1_valid, out);
+ strbuf_addbuf(out, &wd.sb_stat);
+ strbuf_addbuf(out, &wd.sb_sha1);
+ strbuf_addch(out, '\0'); /* safe guard for string lists */
+
+ ewah_free(wd.valid);
+ ewah_free(wd.check_only);
+ ewah_free(wd.sha1_valid);
+ strbuf_release(&wd.out);
+ strbuf_release(&wd.sb_stat);
+ strbuf_release(&wd.sb_sha1);
+ }
+
+ static void free_untracked(struct untracked_cache_dir *ucd)
+ {
+ int i;
+ if (!ucd)
+ return;
+ for (i = 0; i < ucd->dirs_nr; i++)
+ free_untracked(ucd->dirs[i]);
+ for (i = 0; i < ucd->untracked_nr; i++)
+ free(ucd->untracked[i]);
+ free(ucd->untracked);
+ free(ucd->dirs);
+ free(ucd);
+ }
+
+ void free_untracked_cache(struct untracked_cache *uc)
+ {
+ if (uc)
+ free_untracked(uc->root);
+ free(uc);
+ }
+
+ struct read_data {
+ int index;
+ struct untracked_cache_dir **ucd;
+ struct ewah_bitmap *check_only;
+ struct ewah_bitmap *valid;
+ struct ewah_bitmap *sha1_valid;
+ const unsigned char *data;
+ const unsigned char *end;
+ };
+
+ static void stat_data_from_disk(struct stat_data *to, const struct stat_data *from)
+ {
+ to->sd_ctime.sec = get_be32(&from->sd_ctime.sec);
+ to->sd_ctime.nsec = get_be32(&from->sd_ctime.nsec);
+ to->sd_mtime.sec = get_be32(&from->sd_mtime.sec);
+ to->sd_mtime.nsec = get_be32(&from->sd_mtime.nsec);
+ to->sd_dev = get_be32(&from->sd_dev);
+ to->sd_ino = get_be32(&from->sd_ino);
+ to->sd_uid = get_be32(&from->sd_uid);
+ to->sd_gid = get_be32(&from->sd_gid);
+ to->sd_size = get_be32(&from->sd_size);
+ }
+
+ static int read_one_dir(struct untracked_cache_dir **untracked_,
+ struct read_data *rd)
+ {
+ struct untracked_cache_dir ud, *untracked;
+ const unsigned char *next, *data = rd->data, *end = rd->end;
+ unsigned int value;
+ int i, len;
+
+ memset(&ud, 0, sizeof(ud));
+
+ next = data;
+ value = decode_varint(&next);
+ if (next > end)
+ return -1;
+ ud.recurse = 1;
+ ud.untracked_alloc = value;
+ ud.untracked_nr = value;
+ if (ud.untracked_nr)
+ ud.untracked = xmalloc(sizeof(*ud.untracked) * ud.untracked_nr);
+ data = next;
+
+ next = data;
+ ud.dirs_alloc = ud.dirs_nr = decode_varint(&next);
+ if (next > end)
+ return -1;
+ ud.dirs = xmalloc(sizeof(*ud.dirs) * ud.dirs_nr);
+ data = next;
+
+ len = strlen((const char *)data);
+ next = data + len + 1;
+ if (next > rd->end)
+ return -1;
+ *untracked_ = untracked = xmalloc(sizeof(*untracked) + len);
+ memcpy(untracked, &ud, sizeof(ud));
+ memcpy(untracked->name, data, len + 1);
+ data = next;
+
+ for (i = 0; i < untracked->untracked_nr; i++) {
+ len = strlen((const char *)data);
+ next = data + len + 1;
+ if (next > rd->end)
+ return -1;
+ untracked->untracked[i] = xstrdup((const char*)data);
+ data = next;
+ }
+
+ rd->ucd[rd->index++] = untracked;
+ rd->data = data;
+
+ for (i = 0; i < untracked->dirs_nr; i++) {
+ len = read_one_dir(untracked->dirs + i, rd);
+ if (len < 0)
+ return -1;
+ }
+ return 0;
+ }
+
+ static void set_check_only(size_t pos, void *cb)
+ {
+ struct read_data *rd = cb;
+ struct untracked_cache_dir *ud = rd->ucd[pos];
+ ud->check_only = 1;
+ }
+
+ static void read_stat(size_t pos, void *cb)
+ {
+ struct read_data *rd = cb;
+ struct untracked_cache_dir *ud = rd->ucd[pos];
+ if (rd->data + sizeof(struct stat_data) > rd->end) {
+ rd->data = rd->end + 1;
+ return;
+ }
+ stat_data_from_disk(&ud->stat_data, (struct stat_data *)rd->data);
+ rd->data += sizeof(struct stat_data);
+ ud->valid = 1;
+ }
+
+ static void read_sha1(size_t pos, void *cb)
+ {
+ struct read_data *rd = cb;
+ struct untracked_cache_dir *ud = rd->ucd[pos];
+ if (rd->data + 20 > rd->end) {
+ rd->data = rd->end + 1;
+ return;
+ }
+ hashcpy(ud->exclude_sha1, rd->data);
+ rd->data += 20;
+ }
+
+ static void load_sha1_stat(struct sha1_stat *sha1_stat,
+ const struct stat_data *stat,
+ const unsigned char *sha1)
+ {
+ stat_data_from_disk(&sha1_stat->stat, stat);
+ hashcpy(sha1_stat->sha1, sha1);
+ sha1_stat->valid = 1;
+ }
+
+ struct untracked_cache *read_untracked_extension(const void *data, unsigned long sz)
+ {
+ const struct ondisk_untracked_cache *ouc;
+ struct untracked_cache *uc;
+ struct read_data rd;
+ const unsigned char *next = data, *end = (const unsigned char *)data + sz;
+ const char *ident;
+ int ident_len, len;
+
+ if (sz <= 1 || end[-1] != '\0')
+ return NULL;
+ end--;
+
+ ident_len = decode_varint(&next);
+ if (next + ident_len > end)
+ return NULL;
+ ident = (const char *)next;
+ next += ident_len;
+
+ ouc = (const struct ondisk_untracked_cache *)next;
+ if (next + ouc_size(0) > end)
+ return NULL;
+
+ uc = xcalloc(1, sizeof(*uc));
+ strbuf_init(&uc->ident, ident_len);
+ strbuf_add(&uc->ident, ident, ident_len);
+ load_sha1_stat(&uc->ss_info_exclude, &ouc->info_exclude_stat,
+ ouc->info_exclude_sha1);
+ load_sha1_stat(&uc->ss_excludes_file, &ouc->excludes_file_stat,
+ ouc->excludes_file_sha1);
+ uc->dir_flags = get_be32(&ouc->dir_flags);
+ uc->exclude_per_dir = xstrdup(ouc->exclude_per_dir);
+ /* NUL after exclude_per_dir is covered by sizeof(*ouc) */
+ next += ouc_size(strlen(ouc->exclude_per_dir));
+ if (next >= end)
+ goto done2;
+
+ len = decode_varint(&next);
+ if (next > end || len == 0)
+ goto done2;
+
+ rd.valid = ewah_new();
+ rd.check_only = ewah_new();
+ rd.sha1_valid = ewah_new();
+ rd.data = next;
+ rd.end = end;
+ rd.index = 0;
+ rd.ucd = xmalloc(sizeof(*rd.ucd) * len);
+
+ if (read_one_dir(&uc->root, &rd) || rd.index != len)
+ goto done;
+
+ next = rd.data;
+ len = ewah_read_mmap(rd.valid, next, end - next);
+ if (len < 0)
+ goto done;
+
+ next += len;
+ len = ewah_read_mmap(rd.check_only, next, end - next);
+ if (len < 0)
+ goto done;
+
+ next += len;
+ len = ewah_read_mmap(rd.sha1_valid, next, end - next);
+ if (len < 0)
+ goto done;
+
+ ewah_each_bit(rd.check_only, set_check_only, &rd);
+ rd.data = next + len;
+ ewah_each_bit(rd.valid, read_stat, &rd);
+ ewah_each_bit(rd.sha1_valid, read_sha1, &rd);
+ next = rd.data;
+
+ done:
+ free(rd.ucd);
+ ewah_free(rd.valid);
+ ewah_free(rd.check_only);
+ ewah_free(rd.sha1_valid);
+ done2:
+ if (next != end) {
+ free_untracked_cache(uc);
+ uc = NULL;
+ }
+ return uc;
+ }
+
+ void untracked_cache_invalidate_path(struct index_state *istate,
+ const char *path)
+ {
+ const char *sep;
+ struct untracked_cache_dir *d;
+ if (!istate->untracked || !istate->untracked->root)
+ return;
+ sep = strrchr(path, '/');
+ if (sep)
+ d = lookup_untracked(istate->untracked,
+ istate->untracked->root,
+ path, sep - path);
+ else
+ d = istate->untracked->root;
+ istate->untracked->dir_invalidated++;
+ d->valid = 0;
+ d->untracked_nr = 0;
+ }
+
+ void untracked_cache_remove_from_index(struct index_state *istate,
+ const char *path)
+ {
+ untracked_cache_invalidate_path(istate, path);
+ }
+
+ void untracked_cache_add_to_index(struct index_state *istate,
+ const char *path)
+ {
+ untracked_cache_invalidate_path(istate, path);
+ }