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-rw-r--r--builtin/update-index.c1250
1 files changed, 1250 insertions, 0 deletions
diff --git a/builtin/update-index.c b/builtin/update-index.c
new file mode 100644
index 0000000..7bcaa14
--- /dev/null
+++ b/builtin/update-index.c
@@ -0,0 +1,1250 @@
+/*
+ * GIT - The information manager from hell
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ */
+#define USE_THE_INDEX_VARIABLE
+#include "builtin.h"
+#include "bulk-checkin.h"
+#include "config.h"
+#include "environment.h"
+#include "gettext.h"
+#include "hash.h"
+#include "hex.h"
+#include "lockfile.h"
+#include "quote.h"
+#include "cache-tree.h"
+#include "tree-walk.h"
+#include "object-file.h"
+#include "refs.h"
+#include "resolve-undo.h"
+#include "parse-options.h"
+#include "pathspec.h"
+#include "dir.h"
+#include "read-cache.h"
+#include "repository.h"
+#include "setup.h"
+#include "sparse-index.h"
+#include "split-index.h"
+#include "symlinks.h"
+#include "fsmonitor.h"
+#include "write-or-die.h"
+
+/*
+ * Default to not allowing changes to the list of files. The
+ * tool doesn't actually care, but this makes it harder to add
+ * files to the revision control by mistake by doing something
+ * like "git update-index *" and suddenly having all the object
+ * files be revision controlled.
+ */
+static int allow_add;
+static int allow_remove;
+static int allow_replace;
+static int info_only;
+static int force_remove;
+static int verbose;
+static int mark_valid_only;
+static int mark_skip_worktree_only;
+static int mark_fsmonitor_only;
+static int ignore_skip_worktree_entries;
+#define MARK_FLAG 1
+#define UNMARK_FLAG 2
+static struct strbuf mtime_dir = STRBUF_INIT;
+
+/* Untracked cache mode */
+enum uc_mode {
+ UC_UNSPECIFIED = -1,
+ UC_DISABLE = 0,
+ UC_ENABLE,
+ UC_TEST,
+ UC_FORCE
+};
+
+__attribute__((format (printf, 1, 2)))
+static void report(const char *fmt, ...)
+{
+ va_list vp;
+
+ if (!verbose)
+ return;
+
+ /*
+ * It is possible, though unlikely, that a caller could use the verbose
+ * output to synchronize with addition of objects to the object
+ * database. The current implementation of ODB transactions leaves
+ * objects invisible while a transaction is active, so flush the
+ * transaction here before reporting a change made by update-index.
+ */
+ flush_odb_transaction();
+ va_start(vp, fmt);
+ vprintf(fmt, vp);
+ putchar('\n');
+ va_end(vp);
+}
+
+static void remove_test_directory(void)
+{
+ if (mtime_dir.len)
+ remove_dir_recursively(&mtime_dir, 0);
+}
+
+static const char *get_mtime_path(const char *path)
+{
+ static struct strbuf sb = STRBUF_INIT;
+ strbuf_reset(&sb);
+ strbuf_addf(&sb, "%s/%s", mtime_dir.buf, path);
+ return sb.buf;
+}
+
+static void xmkdir(const char *path)
+{
+ path = get_mtime_path(path);
+ if (mkdir(path, 0700))
+ die_errno(_("failed to create directory %s"), path);
+}
+
+static int xstat_mtime_dir(struct stat *st)
+{
+ if (stat(mtime_dir.buf, st))
+ die_errno(_("failed to stat %s"), mtime_dir.buf);
+ return 0;
+}
+
+static int create_file(const char *path)
+{
+ int fd;
+ path = get_mtime_path(path);
+ fd = xopen(path, O_CREAT | O_RDWR, 0644);
+ return fd;
+}
+
+static void xunlink(const char *path)
+{
+ path = get_mtime_path(path);
+ if (unlink(path))
+ die_errno(_("failed to delete file %s"), path);
+}
+
+static void xrmdir(const char *path)
+{
+ path = get_mtime_path(path);
+ if (rmdir(path))
+ die_errno(_("failed to delete directory %s"), path);
+}
+
+static void avoid_racy(void)
+{
+ /*
+ * not use if we could usleep(10) if USE_NSEC is defined. The
+ * field nsec could be there, but the OS could choose to
+ * ignore it?
+ */
+ sleep(1);
+}
+
+static int test_if_untracked_cache_is_supported(void)
+{
+ struct stat st;
+ struct stat_data base;
+ int fd, ret = 0;
+ char *cwd;
+
+ strbuf_addstr(&mtime_dir, "mtime-test-XXXXXX");
+ if (!mkdtemp(mtime_dir.buf))
+ die_errno("Could not make temporary directory");
+
+ cwd = xgetcwd();
+ fprintf(stderr, _("Testing mtime in '%s' "), cwd);
+ free(cwd);
+
+ atexit(remove_test_directory);
+ xstat_mtime_dir(&st);
+ fill_stat_data(&base, &st);
+ fputc('.', stderr);
+
+ avoid_racy();
+ fd = create_file("newfile");
+ xstat_mtime_dir(&st);
+ if (!match_stat_data(&base, &st)) {
+ close(fd);
+ fputc('\n', stderr);
+ fprintf_ln(stderr,_("directory stat info does not "
+ "change after adding a new file"));
+ goto done;
+ }
+ fill_stat_data(&base, &st);
+ fputc('.', stderr);
+
+ avoid_racy();
+ xmkdir("new-dir");
+ xstat_mtime_dir(&st);
+ if (!match_stat_data(&base, &st)) {
+ close(fd);
+ fputc('\n', stderr);
+ fprintf_ln(stderr, _("directory stat info does not change "
+ "after adding a new directory"));
+ goto done;
+ }
+ fill_stat_data(&base, &st);
+ fputc('.', stderr);
+
+ avoid_racy();
+ write_or_die(fd, "data", 4);
+ close(fd);
+ xstat_mtime_dir(&st);
+ if (match_stat_data(&base, &st)) {
+ fputc('\n', stderr);
+ fprintf_ln(stderr, _("directory stat info changes "
+ "after updating a file"));
+ goto done;
+ }
+ fputc('.', stderr);
+
+ avoid_racy();
+ close(create_file("new-dir/new"));
+ xstat_mtime_dir(&st);
+ if (match_stat_data(&base, &st)) {
+ fputc('\n', stderr);
+ fprintf_ln(stderr, _("directory stat info changes after "
+ "adding a file inside subdirectory"));
+ goto done;
+ }
+ fputc('.', stderr);
+
+ avoid_racy();
+ xunlink("newfile");
+ xstat_mtime_dir(&st);
+ if (!match_stat_data(&base, &st)) {
+ fputc('\n', stderr);
+ fprintf_ln(stderr, _("directory stat info does not "
+ "change after deleting a file"));
+ goto done;
+ }
+ fill_stat_data(&base, &st);
+ fputc('.', stderr);
+
+ avoid_racy();
+ xunlink("new-dir/new");
+ xrmdir("new-dir");
+ xstat_mtime_dir(&st);
+ if (!match_stat_data(&base, &st)) {
+ fputc('\n', stderr);
+ fprintf_ln(stderr, _("directory stat info does not "
+ "change after deleting a directory"));
+ goto done;
+ }
+
+ if (rmdir(mtime_dir.buf))
+ die_errno(_("failed to delete directory %s"), mtime_dir.buf);
+ fprintf_ln(stderr, _(" OK"));
+ ret = 1;
+
+done:
+ strbuf_release(&mtime_dir);
+ return ret;
+}
+
+static int mark_ce_flags(const char *path, int flag, int mark)
+{
+ int namelen = strlen(path);
+ int pos = index_name_pos(&the_index, path, namelen);
+ if (0 <= pos) {
+ mark_fsmonitor_invalid(&the_index, the_index.cache[pos]);
+ if (mark)
+ the_index.cache[pos]->ce_flags |= flag;
+ else
+ the_index.cache[pos]->ce_flags &= ~flag;
+ the_index.cache[pos]->ce_flags |= CE_UPDATE_IN_BASE;
+ cache_tree_invalidate_path(&the_index, path);
+ the_index.cache_changed |= CE_ENTRY_CHANGED;
+ return 0;
+ }
+ return -1;
+}
+
+static int remove_one_path(const char *path)
+{
+ if (!allow_remove)
+ return error("%s: does not exist and --remove not passed", path);
+ if (remove_file_from_index(&the_index, path))
+ return error("%s: cannot remove from the index", path);
+ return 0;
+}
+
+/*
+ * Handle a path that couldn't be lstat'ed. It's either:
+ * - missing file (ENOENT or ENOTDIR). That's ok if we're
+ * supposed to be removing it and the removal actually
+ * succeeds.
+ * - permission error. That's never ok.
+ */
+static int process_lstat_error(const char *path, int err)
+{
+ if (is_missing_file_error(err))
+ return remove_one_path(path);
+ return error("lstat(\"%s\"): %s", path, strerror(err));
+}
+
+static int add_one_path(const struct cache_entry *old, const char *path, int len, struct stat *st)
+{
+ int option;
+ struct cache_entry *ce;
+
+ /* Was the old index entry already up-to-date? */
+ if (old && !ce_stage(old) && !ie_match_stat(&the_index, old, st, 0))
+ return 0;
+
+ ce = make_empty_cache_entry(&the_index, len);
+ memcpy(ce->name, path, len);
+ ce->ce_flags = create_ce_flags(0);
+ ce->ce_namelen = len;
+ fill_stat_cache_info(&the_index, ce, st);
+ ce->ce_mode = ce_mode_from_stat(old, st->st_mode);
+
+ if (index_path(&the_index, &ce->oid, path, st,
+ info_only ? 0 : HASH_WRITE_OBJECT)) {
+ discard_cache_entry(ce);
+ return -1;
+ }
+ option = allow_add ? ADD_CACHE_OK_TO_ADD : 0;
+ option |= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0;
+ if (add_index_entry(&the_index, ce, option)) {
+ discard_cache_entry(ce);
+ return error("%s: cannot add to the index - missing --add option?", path);
+ }
+ return 0;
+}
+
+/*
+ * Handle a path that was a directory. Four cases:
+ *
+ * - it's already a gitlink in the index, and we keep it that
+ * way, and update it if we can (if we cannot find the HEAD,
+ * we're going to keep it unchanged in the index!)
+ *
+ * - it's a *file* in the index, in which case it should be
+ * removed as a file if removal is allowed, since it doesn't
+ * exist as such any more. If removal isn't allowed, it's
+ * an error.
+ *
+ * (NOTE! This is old and arguably fairly strange behaviour.
+ * We might want to make this an error unconditionally, and
+ * use "--force-remove" if you actually want to force removal).
+ *
+ * - it used to exist as a subdirectory (ie multiple files with
+ * this particular prefix) in the index, in which case it's wrong
+ * to try to update it as a directory.
+ *
+ * - it doesn't exist at all in the index, but it is a valid
+ * git directory, and it should be *added* as a gitlink.
+ */
+static int process_directory(const char *path, int len, struct stat *st)
+{
+ struct object_id oid;
+ int pos = index_name_pos(&the_index, path, len);
+
+ /* Exact match: file or existing gitlink */
+ if (pos >= 0) {
+ const struct cache_entry *ce = the_index.cache[pos];
+ if (S_ISGITLINK(ce->ce_mode)) {
+
+ /* Do nothing to the index if there is no HEAD! */
+ if (resolve_gitlink_ref(path, "HEAD", &oid) < 0)
+ return 0;
+
+ return add_one_path(ce, path, len, st);
+ }
+ /* Should this be an unconditional error? */
+ return remove_one_path(path);
+ }
+
+ /* Inexact match: is there perhaps a subdirectory match? */
+ pos = -pos-1;
+ while (pos < the_index.cache_nr) {
+ const struct cache_entry *ce = the_index.cache[pos++];
+
+ if (strncmp(ce->name, path, len))
+ break;
+ if (ce->name[len] > '/')
+ break;
+ if (ce->name[len] < '/')
+ continue;
+
+ /* Subdirectory match - error out */
+ return error("%s: is a directory - add individual files instead", path);
+ }
+
+ /* No match - should we add it as a gitlink? */
+ if (!resolve_gitlink_ref(path, "HEAD", &oid))
+ return add_one_path(NULL, path, len, st);
+
+ /* Error out. */
+ return error("%s: is a directory - add files inside instead", path);
+}
+
+static int process_path(const char *path, struct stat *st, int stat_errno)
+{
+ int pos, len;
+ const struct cache_entry *ce;
+
+ len = strlen(path);
+ if (has_symlink_leading_path(path, len))
+ return error("'%s' is beyond a symbolic link", path);
+
+ pos = index_name_pos(&the_index, path, len);
+ ce = pos < 0 ? NULL : the_index.cache[pos];
+ if (ce && ce_skip_worktree(ce)) {
+ /*
+ * working directory version is assumed "good"
+ * so updating it does not make sense.
+ * On the other hand, removing it from index should work
+ */
+ if (!ignore_skip_worktree_entries && allow_remove &&
+ remove_file_from_index(&the_index, path))
+ return error("%s: cannot remove from the index", path);
+ return 0;
+ }
+
+ /*
+ * First things first: get the stat information, to decide
+ * what to do about the pathname!
+ */
+ if (stat_errno)
+ return process_lstat_error(path, stat_errno);
+
+ if (S_ISDIR(st->st_mode))
+ return process_directory(path, len, st);
+
+ return add_one_path(ce, path, len, st);
+}
+
+static int add_cacheinfo(unsigned int mode, const struct object_id *oid,
+ const char *path, int stage)
+{
+ int len, option;
+ struct cache_entry *ce;
+
+ if (!verify_path(path, mode))
+ return error("Invalid path '%s'", path);
+
+ len = strlen(path);
+ ce = make_empty_cache_entry(&the_index, len);
+
+ oidcpy(&ce->oid, oid);
+ memcpy(ce->name, path, len);
+ ce->ce_flags = create_ce_flags(stage);
+ ce->ce_namelen = len;
+ ce->ce_mode = create_ce_mode(mode);
+ if (assume_unchanged)
+ ce->ce_flags |= CE_VALID;
+ option = allow_add ? ADD_CACHE_OK_TO_ADD : 0;
+ option |= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0;
+ if (add_index_entry(&the_index, ce, option))
+ return error("%s: cannot add to the index - missing --add option?",
+ path);
+ report("add '%s'", path);
+ return 0;
+}
+
+static void chmod_path(char flip, const char *path)
+{
+ int pos;
+ struct cache_entry *ce;
+
+ pos = index_name_pos(&the_index, path, strlen(path));
+ if (pos < 0)
+ goto fail;
+ ce = the_index.cache[pos];
+ if (chmod_index_entry(&the_index, ce, flip) < 0)
+ goto fail;
+
+ report("chmod %cx '%s'", flip, path);
+ return;
+ fail:
+ die("git update-index: cannot chmod %cx '%s'", flip, path);
+}
+
+static void update_one(const char *path)
+{
+ int stat_errno = 0;
+ struct stat st;
+
+ if (mark_valid_only || mark_skip_worktree_only || force_remove ||
+ mark_fsmonitor_only)
+ st.st_mode = 0;
+ else if (lstat(path, &st) < 0) {
+ st.st_mode = 0;
+ stat_errno = errno;
+ } /* else stat is valid */
+
+ if (!verify_path(path, st.st_mode)) {
+ fprintf(stderr, "Ignoring path %s\n", path);
+ return;
+ }
+ if (mark_valid_only) {
+ if (mark_ce_flags(path, CE_VALID, mark_valid_only == MARK_FLAG))
+ die("Unable to mark file %s", path);
+ return;
+ }
+ if (mark_skip_worktree_only) {
+ if (mark_ce_flags(path, CE_SKIP_WORKTREE, mark_skip_worktree_only == MARK_FLAG))
+ die("Unable to mark file %s", path);
+ return;
+ }
+ if (mark_fsmonitor_only) {
+ if (mark_ce_flags(path, CE_FSMONITOR_VALID, mark_fsmonitor_only == MARK_FLAG))
+ die("Unable to mark file %s", path);
+ return;
+ }
+
+ if (force_remove) {
+ if (remove_file_from_index(&the_index, path))
+ die("git update-index: unable to remove %s", path);
+ report("remove '%s'", path);
+ return;
+ }
+ if (process_path(path, &st, stat_errno))
+ die("Unable to process path %s", path);
+ report("add '%s'", path);
+}
+
+static void read_index_info(int nul_term_line)
+{
+ const int hexsz = the_hash_algo->hexsz;
+ struct strbuf buf = STRBUF_INIT;
+ struct strbuf uq = STRBUF_INIT;
+ strbuf_getline_fn getline_fn;
+
+ getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf;
+ while (getline_fn(&buf, stdin) != EOF) {
+ char *ptr, *tab;
+ char *path_name;
+ struct object_id oid;
+ unsigned int mode;
+ unsigned long ul;
+ int stage;
+
+ /* This reads lines formatted in one of three formats:
+ *
+ * (1) mode SP sha1 TAB path
+ * The first format is what "git apply --index-info"
+ * reports, and used to reconstruct a partial tree
+ * that is used for phony merge base tree when falling
+ * back on 3-way merge.
+ *
+ * (2) mode SP type SP sha1 TAB path
+ * The second format is to stuff "git ls-tree" output
+ * into the index file.
+ *
+ * (3) mode SP sha1 SP stage TAB path
+ * This format is to put higher order stages into the
+ * index file and matches "git ls-files --stage" output.
+ */
+ errno = 0;
+ ul = strtoul(buf.buf, &ptr, 8);
+ if (ptr == buf.buf || *ptr != ' '
+ || errno || (unsigned int) ul != ul)
+ goto bad_line;
+ mode = ul;
+
+ tab = strchr(ptr, '\t');
+ if (!tab || tab - ptr < hexsz + 1)
+ goto bad_line;
+
+ if (tab[-2] == ' ' && '0' <= tab[-1] && tab[-1] <= '3') {
+ stage = tab[-1] - '0';
+ ptr = tab + 1; /* point at the head of path */
+ tab = tab - 2; /* point at tail of sha1 */
+ }
+ else {
+ stage = 0;
+ ptr = tab + 1; /* point at the head of path */
+ }
+
+ if (get_oid_hex(tab - hexsz, &oid) ||
+ tab[-(hexsz + 1)] != ' ')
+ goto bad_line;
+
+ path_name = ptr;
+ if (!nul_term_line && path_name[0] == '"') {
+ strbuf_reset(&uq);
+ if (unquote_c_style(&uq, path_name, NULL)) {
+ die("git update-index: bad quoting of path name");
+ }
+ path_name = uq.buf;
+ }
+
+ if (!verify_path(path_name, mode)) {
+ fprintf(stderr, "Ignoring path %s\n", path_name);
+ continue;
+ }
+
+ if (!mode) {
+ /* mode == 0 means there is no such path -- remove */
+ if (remove_file_from_index(&the_index, path_name))
+ die("git update-index: unable to remove %s",
+ ptr);
+ }
+ else {
+ /* mode ' ' sha1 '\t' name
+ * ptr[-1] points at tab,
+ * ptr[-41] is at the beginning of sha1
+ */
+ ptr[-(hexsz + 2)] = ptr[-1] = 0;
+ if (add_cacheinfo(mode, &oid, path_name, stage))
+ die("git update-index: unable to update %s",
+ path_name);
+ }
+ continue;
+
+ bad_line:
+ die("malformed index info %s", buf.buf);
+ }
+ strbuf_release(&buf);
+ strbuf_release(&uq);
+}
+
+static const char * const update_index_usage[] = {
+ N_("git update-index [<options>] [--] [<file>...]"),
+ NULL
+};
+
+static struct cache_entry *read_one_ent(const char *which,
+ struct object_id *ent, const char *path,
+ int namelen, int stage)
+{
+ unsigned short mode;
+ struct object_id oid;
+ struct cache_entry *ce;
+
+ if (get_tree_entry(the_repository, ent, path, &oid, &mode)) {
+ if (which)
+ error("%s: not in %s branch.", path, which);
+ return NULL;
+ }
+ if (!the_index.sparse_index && mode == S_IFDIR) {
+ if (which)
+ error("%s: not a blob in %s branch.", path, which);
+ return NULL;
+ }
+ ce = make_empty_cache_entry(&the_index, namelen);
+
+ oidcpy(&ce->oid, &oid);
+ memcpy(ce->name, path, namelen);
+ ce->ce_flags = create_ce_flags(stage);
+ ce->ce_namelen = namelen;
+ ce->ce_mode = create_ce_mode(mode);
+ return ce;
+}
+
+static int unresolve_one(const char *path)
+{
+ struct string_list_item *item;
+ int res = 0;
+
+ if (!the_index.resolve_undo)
+ return res;
+ item = string_list_lookup(the_index.resolve_undo, path);
+ if (!item)
+ return res; /* no resolve-undo record for the path */
+ res = unmerge_index_entry(&the_index, path, item->util, 0);
+ FREE_AND_NULL(item->util);
+ return res;
+}
+
+static int do_unresolve(int ac, const char **av,
+ const char *prefix, int prefix_length)
+{
+ int i;
+ int err = 0;
+
+ for (i = 1; i < ac; i++) {
+ const char *arg = av[i];
+ char *p = prefix_path(prefix, prefix_length, arg);
+ err |= unresolve_one(p);
+ free(p);
+ }
+ return err;
+}
+
+static int do_reupdate(const char **paths,
+ const char *prefix)
+{
+ /* Read HEAD and run update-index on paths that are
+ * merged and already different between index and HEAD.
+ */
+ int pos;
+ int has_head = 1;
+ struct pathspec pathspec;
+ struct object_id head_oid;
+
+ parse_pathspec(&pathspec, 0,
+ PATHSPEC_PREFER_CWD,
+ prefix, paths);
+
+ if (read_ref("HEAD", &head_oid))
+ /* If there is no HEAD, that means it is an initial
+ * commit. Update everything in the index.
+ */
+ has_head = 0;
+ redo:
+ for (pos = 0; pos < the_index.cache_nr; pos++) {
+ const struct cache_entry *ce = the_index.cache[pos];
+ struct cache_entry *old = NULL;
+ int save_nr;
+ char *path;
+
+ if (ce_stage(ce) || !ce_path_match(&the_index, ce, &pathspec, NULL))
+ continue;
+ if (has_head)
+ old = read_one_ent(NULL, &head_oid,
+ ce->name, ce_namelen(ce), 0);
+ if (old && ce->ce_mode == old->ce_mode &&
+ oideq(&ce->oid, &old->oid)) {
+ discard_cache_entry(old);
+ continue; /* unchanged */
+ }
+
+ /* At this point, we know the contents of the sparse directory are
+ * modified with respect to HEAD, so we expand the index and restart
+ * to process each path individually
+ */
+ if (S_ISSPARSEDIR(ce->ce_mode)) {
+ ensure_full_index(&the_index);
+ goto redo;
+ }
+
+ /* Be careful. The working tree may not have the
+ * path anymore, in which case, under 'allow_remove',
+ * or worse yet 'allow_replace', active_nr may decrease.
+ */
+ save_nr = the_index.cache_nr;
+ path = xstrdup(ce->name);
+ update_one(path);
+ free(path);
+ discard_cache_entry(old);
+ if (save_nr != the_index.cache_nr)
+ goto redo;
+ }
+ clear_pathspec(&pathspec);
+ return 0;
+}
+
+struct refresh_params {
+ unsigned int flags;
+ int *has_errors;
+};
+
+static int refresh(struct refresh_params *o, unsigned int flag)
+{
+ setup_work_tree();
+ repo_read_index(the_repository);
+ *o->has_errors |= refresh_index(&the_index, o->flags | flag, NULL,
+ NULL, NULL);
+ if (has_racy_timestamp(&the_index)) {
+ /*
+ * Even if nothing else has changed, updating the file
+ * increases the chance that racy timestamps become
+ * non-racy, helping future run-time performance.
+ * We do that even in case of "errors" returned by
+ * refresh_index() as these are no actual errors.
+ * cmd_status() does the same.
+ */
+ the_index.cache_changed |= SOMETHING_CHANGED;
+ }
+ return 0;
+}
+
+static int refresh_callback(const struct option *opt,
+ const char *arg, int unset)
+{
+ BUG_ON_OPT_NEG(unset);
+ BUG_ON_OPT_ARG(arg);
+ return refresh(opt->value, 0);
+}
+
+static int really_refresh_callback(const struct option *opt,
+ const char *arg, int unset)
+{
+ BUG_ON_OPT_NEG(unset);
+ BUG_ON_OPT_ARG(arg);
+ return refresh(opt->value, REFRESH_REALLY);
+}
+
+static int chmod_callback(const struct option *opt,
+ const char *arg, int unset)
+{
+ char *flip = opt->value;
+ BUG_ON_OPT_NEG(unset);
+ if ((arg[0] != '-' && arg[0] != '+') || arg[1] != 'x' || arg[2])
+ return error("option 'chmod' expects \"+x\" or \"-x\"");
+ *flip = arg[0];
+ return 0;
+}
+
+static int resolve_undo_clear_callback(const struct option *opt UNUSED,
+ const char *arg, int unset)
+{
+ BUG_ON_OPT_NEG(unset);
+ BUG_ON_OPT_ARG(arg);
+ resolve_undo_clear_index(&the_index);
+ return 0;
+}
+
+static int parse_new_style_cacheinfo(const char *arg,
+ unsigned int *mode,
+ struct object_id *oid,
+ const char **path)
+{
+ unsigned long ul;
+ char *endp;
+ const char *p;
+
+ if (!arg)
+ return -1;
+
+ errno = 0;
+ ul = strtoul(arg, &endp, 8);
+ if (errno || endp == arg || *endp != ',' || (unsigned int) ul != ul)
+ return -1; /* not a new-style cacheinfo */
+ *mode = ul;
+ endp++;
+ if (parse_oid_hex(endp, oid, &p) || *p != ',')
+ return -1;
+ *path = p + 1;
+ return 0;
+}
+
+static enum parse_opt_result cacheinfo_callback(
+ struct parse_opt_ctx_t *ctx, const struct option *opt UNUSED,
+ const char *arg, int unset)
+{
+ struct object_id oid;
+ unsigned int mode;
+ const char *path;
+
+ BUG_ON_OPT_NEG(unset);
+ BUG_ON_OPT_ARG(arg);
+
+ if (!parse_new_style_cacheinfo(ctx->argv[1], &mode, &oid, &path)) {
+ if (add_cacheinfo(mode, &oid, path, 0))
+ die("git update-index: --cacheinfo cannot add %s", path);
+ ctx->argv++;
+ ctx->argc--;
+ return 0;
+ }
+ if (ctx->argc <= 3)
+ return error("option 'cacheinfo' expects <mode>,<sha1>,<path>");
+ if (strtoul_ui(*++ctx->argv, 8, &mode) ||
+ get_oid_hex(*++ctx->argv, &oid) ||
+ add_cacheinfo(mode, &oid, *++ctx->argv, 0))
+ die("git update-index: --cacheinfo cannot add %s", *ctx->argv);
+ ctx->argc -= 3;
+ return 0;
+}
+
+static enum parse_opt_result stdin_cacheinfo_callback(
+ struct parse_opt_ctx_t *ctx, const struct option *opt,
+ const char *arg, int unset)
+{
+ int *nul_term_line = opt->value;
+
+ BUG_ON_OPT_NEG(unset);
+ BUG_ON_OPT_ARG(arg);
+
+ if (ctx->argc != 1)
+ return error("option '%s' must be the last argument", opt->long_name);
+ allow_add = allow_replace = allow_remove = 1;
+ read_index_info(*nul_term_line);
+ return 0;
+}
+
+static enum parse_opt_result stdin_callback(
+ struct parse_opt_ctx_t *ctx, const struct option *opt,
+ const char *arg, int unset)
+{
+ int *read_from_stdin = opt->value;
+
+ BUG_ON_OPT_NEG(unset);
+ BUG_ON_OPT_ARG(arg);
+
+ if (ctx->argc != 1)
+ return error("option '%s' must be the last argument", opt->long_name);
+ *read_from_stdin = 1;
+ return 0;
+}
+
+static enum parse_opt_result unresolve_callback(
+ struct parse_opt_ctx_t *ctx, const struct option *opt,
+ const char *arg, int unset)
+{
+ int *has_errors = opt->value;
+ const char *prefix = startup_info->prefix;
+
+ BUG_ON_OPT_NEG(unset);
+ BUG_ON_OPT_ARG(arg);
+
+ /* consume remaining arguments. */
+ *has_errors = do_unresolve(ctx->argc, ctx->argv,
+ prefix, prefix ? strlen(prefix) : 0);
+ if (*has_errors)
+ the_index.cache_changed = 0;
+
+ ctx->argv += ctx->argc - 1;
+ ctx->argc = 1;
+ return 0;
+}
+
+static enum parse_opt_result reupdate_callback(
+ struct parse_opt_ctx_t *ctx, const struct option *opt,
+ const char *arg, int unset)
+{
+ int *has_errors = opt->value;
+ const char *prefix = startup_info->prefix;
+
+ BUG_ON_OPT_NEG(unset);
+ BUG_ON_OPT_ARG(arg);
+
+ /* consume remaining arguments. */
+ setup_work_tree();
+ *has_errors = do_reupdate(ctx->argv + 1, prefix);
+ if (*has_errors)
+ the_index.cache_changed = 0;
+
+ ctx->argv += ctx->argc - 1;
+ ctx->argc = 1;
+ return 0;
+}
+
+int cmd_update_index(int argc, const char **argv, const char *prefix)
+{
+ int newfd, entries, has_errors = 0, nul_term_line = 0;
+ enum uc_mode untracked_cache = UC_UNSPECIFIED;
+ int read_from_stdin = 0;
+ int prefix_length = prefix ? strlen(prefix) : 0;
+ int preferred_index_format = 0;
+ char set_executable_bit = 0;
+ struct refresh_params refresh_args = {0, &has_errors};
+ int lock_error = 0;
+ int split_index = -1;
+ int force_write = 0;
+ int fsmonitor = -1;
+ struct lock_file lock_file = LOCK_INIT;
+ struct parse_opt_ctx_t ctx;
+ strbuf_getline_fn getline_fn;
+ int parseopt_state = PARSE_OPT_UNKNOWN;
+ struct repository *r = the_repository;
+ struct option options[] = {
+ OPT_BIT('q', NULL, &refresh_args.flags,
+ N_("continue refresh even when index needs update"),
+ REFRESH_QUIET),
+ OPT_BIT(0, "ignore-submodules", &refresh_args.flags,
+ N_("refresh: ignore submodules"),
+ REFRESH_IGNORE_SUBMODULES),
+ OPT_SET_INT(0, "add", &allow_add,
+ N_("do not ignore new files"), 1),
+ OPT_SET_INT(0, "replace", &allow_replace,
+ N_("let files replace directories and vice-versa"), 1),
+ OPT_SET_INT(0, "remove", &allow_remove,
+ N_("notice files missing from worktree"), 1),
+ OPT_BIT(0, "unmerged", &refresh_args.flags,
+ N_("refresh even if index contains unmerged entries"),
+ REFRESH_UNMERGED),
+ OPT_CALLBACK_F(0, "refresh", &refresh_args, NULL,
+ N_("refresh stat information"),
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG,
+ refresh_callback),
+ OPT_CALLBACK_F(0, "really-refresh", &refresh_args, NULL,
+ N_("like --refresh, but ignore assume-unchanged setting"),
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG,
+ really_refresh_callback),
+ {OPTION_LOWLEVEL_CALLBACK, 0, "cacheinfo", NULL,
+ N_("<mode>,<object>,<path>"),
+ N_("add the specified entry to the index"),
+ PARSE_OPT_NOARG | /* disallow --cacheinfo=<mode> form */
+ PARSE_OPT_NONEG | PARSE_OPT_LITERAL_ARGHELP,
+ NULL, 0,
+ cacheinfo_callback},
+ OPT_CALLBACK_F(0, "chmod", &set_executable_bit, "(+|-)x",
+ N_("override the executable bit of the listed files"),
+ PARSE_OPT_NONEG,
+ chmod_callback),
+ {OPTION_SET_INT, 0, "assume-unchanged", &mark_valid_only, NULL,
+ N_("mark files as \"not changing\""),
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, MARK_FLAG},
+ {OPTION_SET_INT, 0, "no-assume-unchanged", &mark_valid_only, NULL,
+ N_("clear assumed-unchanged bit"),
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, UNMARK_FLAG},
+ {OPTION_SET_INT, 0, "skip-worktree", &mark_skip_worktree_only, NULL,
+ N_("mark files as \"index-only\""),
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, MARK_FLAG},
+ {OPTION_SET_INT, 0, "no-skip-worktree", &mark_skip_worktree_only, NULL,
+ N_("clear skip-worktree bit"),
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, UNMARK_FLAG},
+ OPT_BOOL(0, "ignore-skip-worktree-entries", &ignore_skip_worktree_entries,
+ N_("do not touch index-only entries")),
+ OPT_SET_INT(0, "info-only", &info_only,
+ N_("add to index only; do not add content to object database"), 1),
+ OPT_SET_INT(0, "force-remove", &force_remove,
+ N_("remove named paths even if present in worktree"), 1),
+ OPT_BOOL('z', NULL, &nul_term_line,
+ N_("with --stdin: input lines are terminated by null bytes")),
+ {OPTION_LOWLEVEL_CALLBACK, 0, "stdin", &read_from_stdin, NULL,
+ N_("read list of paths to be updated from standard input"),
+ PARSE_OPT_NONEG | PARSE_OPT_NOARG,
+ NULL, 0, stdin_callback},
+ {OPTION_LOWLEVEL_CALLBACK, 0, "index-info", &nul_term_line, NULL,
+ N_("add entries from standard input to the index"),
+ PARSE_OPT_NONEG | PARSE_OPT_NOARG,
+ NULL, 0, stdin_cacheinfo_callback},
+ {OPTION_LOWLEVEL_CALLBACK, 0, "unresolve", &has_errors, NULL,
+ N_("repopulate stages #2 and #3 for the listed paths"),
+ PARSE_OPT_NONEG | PARSE_OPT_NOARG,
+ NULL, 0, unresolve_callback},
+ {OPTION_LOWLEVEL_CALLBACK, 'g', "again", &has_errors, NULL,
+ N_("only update entries that differ from HEAD"),
+ PARSE_OPT_NONEG | PARSE_OPT_NOARG,
+ NULL, 0, reupdate_callback},
+ OPT_BIT(0, "ignore-missing", &refresh_args.flags,
+ N_("ignore files missing from worktree"),
+ REFRESH_IGNORE_MISSING),
+ OPT_SET_INT(0, "verbose", &verbose,
+ N_("report actions to standard output"), 1),
+ OPT_CALLBACK_F(0, "clear-resolve-undo", NULL, NULL,
+ N_("(for porcelains) forget saved unresolved conflicts"),
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG,
+ resolve_undo_clear_callback),
+ OPT_INTEGER(0, "index-version", &preferred_index_format,
+ N_("write index in this format")),
+ OPT_SET_INT(0, "show-index-version", &preferred_index_format,
+ N_("report on-disk index format version"), -1),
+ OPT_BOOL(0, "split-index", &split_index,
+ N_("enable or disable split index")),
+ OPT_BOOL(0, "untracked-cache", &untracked_cache,
+ N_("enable/disable untracked cache")),
+ OPT_SET_INT(0, "test-untracked-cache", &untracked_cache,
+ N_("test if the filesystem supports untracked cache"), UC_TEST),
+ OPT_SET_INT(0, "force-untracked-cache", &untracked_cache,
+ N_("enable untracked cache without testing the filesystem"), UC_FORCE),
+ OPT_SET_INT(0, "force-write-index", &force_write,
+ N_("write out the index even if is not flagged as changed"), 1),
+ OPT_BOOL(0, "fsmonitor", &fsmonitor,
+ N_("enable or disable file system monitor")),
+ {OPTION_SET_INT, 0, "fsmonitor-valid", &mark_fsmonitor_only, NULL,
+ N_("mark files as fsmonitor valid"),
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, MARK_FLAG},
+ {OPTION_SET_INT, 0, "no-fsmonitor-valid", &mark_fsmonitor_only, NULL,
+ N_("clear fsmonitor valid bit"),
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, UNMARK_FLAG},
+ OPT_END()
+ };
+
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage_with_options(update_index_usage, options);
+
+ git_config(git_default_config, NULL);
+
+ prepare_repo_settings(r);
+ the_repository->settings.command_requires_full_index = 0;
+
+ /* we will diagnose later if it turns out that we need to update it */
+ newfd = repo_hold_locked_index(the_repository, &lock_file, 0);
+ if (newfd < 0)
+ lock_error = errno;
+
+ entries = repo_read_index(the_repository);
+ if (entries < 0)
+ die("cache corrupted");
+
+ the_index.updated_skipworktree = 1;
+
+ /*
+ * Custom copy of parse_options() because we want to handle
+ * filename arguments as they come.
+ */
+ parse_options_start(&ctx, argc, argv, prefix,
+ options, PARSE_OPT_STOP_AT_NON_OPTION);
+
+ /*
+ * Allow the object layer to optimize adding multiple objects in
+ * a batch.
+ */
+ begin_odb_transaction();
+ while (ctx.argc) {
+ if (parseopt_state != PARSE_OPT_DONE)
+ parseopt_state = parse_options_step(&ctx, options,
+ update_index_usage);
+ if (!ctx.argc)
+ break;
+ switch (parseopt_state) {
+ case PARSE_OPT_HELP:
+ case PARSE_OPT_ERROR:
+ exit(129);
+ case PARSE_OPT_COMPLETE:
+ exit(0);
+ case PARSE_OPT_NON_OPTION:
+ case PARSE_OPT_DONE:
+ {
+ const char *path = ctx.argv[0];
+ char *p;
+
+ setup_work_tree();
+ p = prefix_path(prefix, prefix_length, path);
+ update_one(p);
+ if (set_executable_bit)
+ chmod_path(set_executable_bit, p);
+ free(p);
+ ctx.argc--;
+ ctx.argv++;
+ break;
+ }
+ case PARSE_OPT_UNKNOWN:
+ if (ctx.argv[0][1] == '-')
+ error("unknown option '%s'", ctx.argv[0] + 2);
+ else
+ error("unknown switch '%c'", *ctx.opt);
+ usage_with_options(update_index_usage, options);
+ }
+ }
+ argc = parse_options_end(&ctx);
+
+ getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf;
+ if (preferred_index_format) {
+ if (preferred_index_format < 0) {
+ printf(_("%d\n"), the_index.version);
+ } else if (preferred_index_format < INDEX_FORMAT_LB ||
+ INDEX_FORMAT_UB < preferred_index_format) {
+ die("index-version %d not in range: %d..%d",
+ preferred_index_format,
+ INDEX_FORMAT_LB, INDEX_FORMAT_UB);
+ } else {
+ if (the_index.version != preferred_index_format)
+ the_index.cache_changed |= SOMETHING_CHANGED;
+ report(_("index-version: was %d, set to %d"),
+ the_index.version, preferred_index_format);
+ the_index.version = preferred_index_format;
+ }
+ }
+
+ if (read_from_stdin) {
+ struct strbuf buf = STRBUF_INIT;
+ struct strbuf unquoted = STRBUF_INIT;
+
+ setup_work_tree();
+ while (getline_fn(&buf, stdin) != EOF) {
+ char *p;
+ if (!nul_term_line && buf.buf[0] == '"') {
+ strbuf_reset(&unquoted);
+ if (unquote_c_style(&unquoted, buf.buf, NULL))
+ die("line is badly quoted");
+ strbuf_swap(&buf, &unquoted);
+ }
+ p = prefix_path(prefix, prefix_length, buf.buf);
+ update_one(p);
+ if (set_executable_bit)
+ chmod_path(set_executable_bit, p);
+ free(p);
+ }
+ strbuf_release(&unquoted);
+ strbuf_release(&buf);
+ }
+
+ /*
+ * By now we have added all of the new objects
+ */
+ end_odb_transaction();
+
+ if (split_index > 0) {
+ if (git_config_get_split_index() == 0)
+ warning(_("core.splitIndex is set to false; "
+ "remove or change it, if you really want to "
+ "enable split index"));
+ if (the_index.split_index)
+ the_index.cache_changed |= SPLIT_INDEX_ORDERED;
+ else
+ add_split_index(&the_index);
+ } else if (!split_index) {
+ if (git_config_get_split_index() == 1)
+ warning(_("core.splitIndex is set to true; "
+ "remove or change it, if you really want to "
+ "disable split index"));
+ remove_split_index(&the_index);
+ }
+
+ prepare_repo_settings(r);
+ switch (untracked_cache) {
+ case UC_UNSPECIFIED:
+ break;
+ case UC_DISABLE:
+ if (r->settings.core_untracked_cache == UNTRACKED_CACHE_WRITE)
+ warning(_("core.untrackedCache is set to true; "
+ "remove or change it, if you really want to "
+ "disable the untracked cache"));
+ remove_untracked_cache(&the_index);
+ report(_("Untracked cache disabled"));
+ break;
+ case UC_TEST:
+ setup_work_tree();
+ return !test_if_untracked_cache_is_supported();
+ case UC_ENABLE:
+ case UC_FORCE:
+ if (r->settings.core_untracked_cache == UNTRACKED_CACHE_REMOVE)
+ warning(_("core.untrackedCache is set to false; "
+ "remove or change it, if you really want to "
+ "enable the untracked cache"));
+ add_untracked_cache(&the_index);
+ report(_("Untracked cache enabled for '%s'"), get_git_work_tree());
+ break;
+ default:
+ BUG("bad untracked_cache value: %d", untracked_cache);
+ }
+
+ if (fsmonitor > 0) {
+ enum fsmonitor_mode fsm_mode = fsm_settings__get_mode(r);
+ enum fsmonitor_reason reason = fsm_settings__get_reason(r);
+
+ /*
+ * The user wants to turn on FSMonitor using the command
+ * line argument. (We don't know (or care) whether that
+ * is the IPC or HOOK version.)
+ *
+ * Use one of the __get routines to force load the FSMonitor
+ * config settings into the repo-settings. That will detect
+ * whether the file system is compatible so that we can stop
+ * here with a nice error message.
+ */
+ if (reason > FSMONITOR_REASON_OK)
+ die("%s",
+ fsm_settings__get_incompatible_msg(r, reason));
+
+ if (fsm_mode == FSMONITOR_MODE_DISABLED) {
+ warning(_("core.fsmonitor is unset; "
+ "set it if you really want to "
+ "enable fsmonitor"));
+ }
+ add_fsmonitor(&the_index);
+ report(_("fsmonitor enabled"));
+ } else if (!fsmonitor) {
+ enum fsmonitor_mode fsm_mode = fsm_settings__get_mode(r);
+ if (fsm_mode > FSMONITOR_MODE_DISABLED)
+ warning(_("core.fsmonitor is set; "
+ "remove it if you really want to "
+ "disable fsmonitor"));
+ remove_fsmonitor(&the_index);
+ report(_("fsmonitor disabled"));
+ }
+
+ if (the_index.cache_changed || force_write) {
+ if (newfd < 0) {
+ if (refresh_args.flags & REFRESH_QUIET)
+ exit(128);
+ unable_to_lock_die(get_index_file(), lock_error);
+ }
+ if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
+ die("Unable to write new index file");
+ }
+
+ rollback_lock_file(&lock_file);
+
+ return has_errors ? 1 : 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 04:07:39 +0000