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-rw-r--r--builtin/update-index.c890
1 files changed, 890 insertions, 0 deletions
diff --git a/builtin/update-index.c b/builtin/update-index.c
new file mode 100644
index 0000000..f14bc90
--- /dev/null
+++ b/builtin/update-index.c
@@ -0,0 +1,890 @@
+/*
+ * GIT - The information manager from hell
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ */
+#include "cache.h"
+#include "quote.h"
+#include "cache-tree.h"
+#include "tree-walk.h"
+#include "builtin.h"
+#include "refs.h"
+#include "resolve-undo.h"
+#include "parse-options.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;
+#define MARK_FLAG 1
+#define UNMARK_FLAG 2
+
+__attribute__((format (printf, 1, 2)))
+static void report(const char *fmt, ...)
+{
+ va_list vp;
+
+ if (!verbose)
+ return;
+
+ va_start(vp, fmt);
+ vprintf(fmt, vp);
+ putchar('\n');
+ va_end(vp);
+}
+
+static int mark_ce_flags(const char *path, int flag, int mark)
+{
+ int namelen = strlen(path);
+ int pos = cache_name_pos(path, namelen);
+ if (0 <= pos) {
+ if (mark)
+ active_cache[pos]->ce_flags |= flag;
+ else
+ active_cache[pos]->ce_flags &= ~flag;
+ cache_tree_invalidate_path(active_cache_tree, path);
+ active_cache_changed = 1;
+ 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_cache(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 (err == ENOENT || err == ENOTDIR)
+ return remove_one_path(path);
+ return error("lstat(\"%s\"): %s", path, strerror(errno));
+}
+
+static int add_one_path(struct cache_entry *old, const char *path, int len, struct stat *st)
+{
+ int option, size;
+ struct cache_entry *ce;
+
+ /* Was the old index entry already up-to-date? */
+ if (old && !ce_stage(old) && !ce_match_stat(old, st, 0))
+ return 0;
+
+ size = cache_entry_size(len);
+ ce = xcalloc(1, size);
+ memcpy(ce->name, path, len);
+ ce->ce_flags = len;
+ fill_stat_cache_info(ce, st);
+ ce->ce_mode = ce_mode_from_stat(old, st->st_mode);
+
+ if (index_path(ce->sha1, path, st,
+ info_only ? 0 : HASH_WRITE_OBJECT))
+ return -1;
+ option = allow_add ? ADD_CACHE_OK_TO_ADD : 0;
+ option |= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0;
+ if (add_cache_entry(ce, option))
+ 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)
+{
+ unsigned char sha1[20];
+ int pos = cache_name_pos(path, len);
+
+ /* Exact match: file or existing gitlink */
+ if (pos >= 0) {
+ struct cache_entry *ce = active_cache[pos];
+ if (S_ISGITLINK(ce->ce_mode)) {
+
+ /* Do nothing to the index if there is no HEAD! */
+ if (resolve_gitlink_ref(path, "HEAD", sha1) < 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 < active_nr) {
+ struct cache_entry *ce = active_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", sha1))
+ 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)
+{
+ int pos, len;
+ struct stat st;
+ struct cache_entry *ce;
+
+ len = strlen(path);
+ if (has_symlink_leading_path(path, len))
+ return error("'%s' is beyond a symbolic link", path);
+
+ pos = cache_name_pos(path, len);
+ ce = pos < 0 ? NULL : active_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 (allow_remove && remove_file_from_cache(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 (lstat(path, &st) < 0)
+ return process_lstat_error(path, errno);
+
+ if (S_ISDIR(st.st_mode))
+ return process_directory(path, len, &st);
+
+ /*
+ * Process a regular file
+ */
+ if (ce && S_ISGITLINK(ce->ce_mode))
+ return error("%s is already a gitlink, not replacing", path);
+
+ return add_one_path(ce, path, len, &st);
+}
+
+static int add_cacheinfo(unsigned int mode, const unsigned char *sha1,
+ const char *path, int stage)
+{
+ int size, len, option;
+ struct cache_entry *ce;
+
+ if (!verify_path(path))
+ return error("Invalid path '%s'", path);
+
+ len = strlen(path);
+ size = cache_entry_size(len);
+ ce = xcalloc(1, size);
+
+ hashcpy(ce->sha1, sha1);
+ memcpy(ce->name, path, len);
+ ce->ce_flags = create_ce_flags(len, stage);
+ 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_cache_entry(ce, option))
+ return error("%s: cannot add to the index - missing --add option?",
+ path);
+ report("add '%s'", path);
+ return 0;
+}
+
+static void chmod_path(int flip, const char *path)
+{
+ int pos;
+ struct cache_entry *ce;
+ unsigned int mode;
+
+ pos = cache_name_pos(path, strlen(path));
+ if (pos < 0)
+ goto fail;
+ ce = active_cache[pos];
+ mode = ce->ce_mode;
+ if (!S_ISREG(mode))
+ goto fail;
+ switch (flip) {
+ case '+':
+ ce->ce_mode |= 0111; break;
+ case '-':
+ ce->ce_mode &= ~0111; break;
+ default:
+ goto fail;
+ }
+ cache_tree_invalidate_path(active_cache_tree, path);
+ active_cache_changed = 1;
+ 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, const char *prefix, int prefix_length)
+{
+ const char *p = prefix_path(prefix, prefix_length, path);
+ if (!verify_path(p)) {
+ fprintf(stderr, "Ignoring path %s\n", path);
+ goto free_return;
+ }
+ if (mark_valid_only) {
+ if (mark_ce_flags(p, CE_VALID, mark_valid_only == MARK_FLAG))
+ die("Unable to mark file %s", path);
+ goto free_return;
+ }
+ if (mark_skip_worktree_only) {
+ if (mark_ce_flags(p, CE_SKIP_WORKTREE, mark_skip_worktree_only == MARK_FLAG))
+ die("Unable to mark file %s", path);
+ goto free_return;
+ }
+
+ if (force_remove) {
+ if (remove_file_from_cache(p))
+ die("git update-index: unable to remove %s", path);
+ report("remove '%s'", path);
+ goto free_return;
+ }
+ if (process_path(p))
+ die("Unable to process path %s", path);
+ report("add '%s'", path);
+ free_return:
+ if (p < path || p > path + strlen(path))
+ free((char *)p);
+}
+
+static void read_index_info(int line_termination)
+{
+ struct strbuf buf = STRBUF_INIT;
+ struct strbuf uq = STRBUF_INIT;
+
+ while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
+ char *ptr, *tab;
+ char *path_name;
+ unsigned char sha1[20];
+ 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 < 41)
+ 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_sha1_hex(tab - 40, sha1) || tab[-41] != ' ')
+ goto bad_line;
+
+ path_name = ptr;
+ if (line_termination && 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)) {
+ fprintf(stderr, "Ignoring path %s\n", path_name);
+ continue;
+ }
+
+ if (!mode) {
+ /* mode == 0 means there is no such path -- remove */
+ if (remove_file_from_cache(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[-42] = ptr[-1] = 0;
+ if (add_cacheinfo(mode, sha1, 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[] = {
+ "git update-index [options] [--] [<file>...]",
+ NULL
+};
+
+static unsigned char head_sha1[20];
+static unsigned char merge_head_sha1[20];
+
+static struct cache_entry *read_one_ent(const char *which,
+ unsigned char *ent, const char *path,
+ int namelen, int stage)
+{
+ unsigned mode;
+ unsigned char sha1[20];
+ int size;
+ struct cache_entry *ce;
+
+ if (get_tree_entry(ent, path, sha1, &mode)) {
+ if (which)
+ error("%s: not in %s branch.", path, which);
+ return NULL;
+ }
+ if (mode == S_IFDIR) {
+ if (which)
+ error("%s: not a blob in %s branch.", path, which);
+ return NULL;
+ }
+ size = cache_entry_size(namelen);
+ ce = xcalloc(1, size);
+
+ hashcpy(ce->sha1, sha1);
+ memcpy(ce->name, path, namelen);
+ ce->ce_flags = create_ce_flags(namelen, stage);
+ ce->ce_mode = create_ce_mode(mode);
+ return ce;
+}
+
+static int unresolve_one(const char *path)
+{
+ int namelen = strlen(path);
+ int pos;
+ int ret = 0;
+ struct cache_entry *ce_2 = NULL, *ce_3 = NULL;
+
+ /* See if there is such entry in the index. */
+ pos = cache_name_pos(path, namelen);
+ if (0 <= pos) {
+ /* already merged */
+ pos = unmerge_cache_entry_at(pos);
+ if (pos < active_nr) {
+ struct cache_entry *ce = active_cache[pos];
+ if (ce_stage(ce) &&
+ ce_namelen(ce) == namelen &&
+ !memcmp(ce->name, path, namelen))
+ return 0;
+ }
+ /* no resolve-undo information; fall back */
+ } else {
+ /* If there isn't, either it is unmerged, or
+ * resolved as "removed" by mistake. We do not
+ * want to do anything in the former case.
+ */
+ pos = -pos-1;
+ if (pos < active_nr) {
+ struct cache_entry *ce = active_cache[pos];
+ if (ce_namelen(ce) == namelen &&
+ !memcmp(ce->name, path, namelen)) {
+ fprintf(stderr,
+ "%s: skipping still unmerged path.\n",
+ path);
+ goto free_return;
+ }
+ }
+ }
+
+ /* Grab blobs from given path from HEAD and MERGE_HEAD,
+ * stuff HEAD version in stage #2,
+ * stuff MERGE_HEAD version in stage #3.
+ */
+ ce_2 = read_one_ent("our", head_sha1, path, namelen, 2);
+ ce_3 = read_one_ent("their", merge_head_sha1, path, namelen, 3);
+
+ if (!ce_2 || !ce_3) {
+ ret = -1;
+ goto free_return;
+ }
+ if (!hashcmp(ce_2->sha1, ce_3->sha1) &&
+ ce_2->ce_mode == ce_3->ce_mode) {
+ fprintf(stderr, "%s: identical in both, skipping.\n",
+ path);
+ goto free_return;
+ }
+
+ remove_file_from_cache(path);
+ if (add_cache_entry(ce_2, ADD_CACHE_OK_TO_ADD)) {
+ error("%s: cannot add our version to the index.", path);
+ ret = -1;
+ goto free_return;
+ }
+ if (!add_cache_entry(ce_3, ADD_CACHE_OK_TO_ADD))
+ return 0;
+ error("%s: cannot add their version to the index.", path);
+ ret = -1;
+ free_return:
+ free(ce_2);
+ free(ce_3);
+ return ret;
+}
+
+static void read_head_pointers(void)
+{
+ if (read_ref("HEAD", head_sha1))
+ die("No HEAD -- no initial commit yet?");
+ if (read_ref("MERGE_HEAD", merge_head_sha1)) {
+ fprintf(stderr, "Not in the middle of a merge.\n");
+ exit(0);
+ }
+}
+
+static int do_unresolve(int ac, const char **av,
+ const char *prefix, int prefix_length)
+{
+ int i;
+ int err = 0;
+
+ /* Read HEAD and MERGE_HEAD; if MERGE_HEAD does not exist, we
+ * are not doing a merge, so exit with success status.
+ */
+ read_head_pointers();
+
+ for (i = 1; i < ac; i++) {
+ const char *arg = av[i];
+ const char *p = prefix_path(prefix, prefix_length, arg);
+ err |= unresolve_one(p);
+ if (p < arg || p > arg + strlen(arg))
+ free((char *)p);
+ }
+ return err;
+}
+
+static int do_reupdate(int ac, const char **av,
+ const char *prefix, int prefix_length)
+{
+ /* Read HEAD and run update-index on paths that are
+ * merged and already different between index and HEAD.
+ */
+ int pos;
+ int has_head = 1;
+ const char **paths = get_pathspec(prefix, av + 1);
+ struct pathspec pathspec;
+
+ init_pathspec(&pathspec, paths);
+
+ if (read_ref("HEAD", head_sha1))
+ /* 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 < active_nr; pos++) {
+ struct cache_entry *ce = active_cache[pos];
+ struct cache_entry *old = NULL;
+ int save_nr;
+
+ if (ce_stage(ce) || !ce_path_match(ce, &pathspec))
+ continue;
+ if (has_head)
+ old = read_one_ent(NULL, head_sha1,
+ ce->name, ce_namelen(ce), 0);
+ if (old && ce->ce_mode == old->ce_mode &&
+ !hashcmp(ce->sha1, old->sha1)) {
+ free(old);
+ continue; /* unchanged */
+ }
+ /* 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 = active_nr;
+ update_one(ce->name + prefix_length, prefix, prefix_length);
+ if (save_nr != active_nr)
+ goto redo;
+ }
+ free_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();
+ *o->has_errors |= refresh_cache(o->flags | flag);
+ return 0;
+}
+
+static int refresh_callback(const struct option *opt,
+ const char *arg, int unset)
+{
+ return refresh(opt->value, 0);
+}
+
+static int really_refresh_callback(const struct option *opt,
+ const char *arg, int unset)
+{
+ return refresh(opt->value, REFRESH_REALLY);
+}
+
+static int chmod_callback(const struct option *opt,
+ const char *arg, int unset)
+{
+ char *flip = opt->value;
+ 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,
+ const char *arg, int unset)
+{
+ resolve_undo_clear();
+ return 0;
+}
+
+static int cacheinfo_callback(struct parse_opt_ctx_t *ctx,
+ const struct option *opt, int unset)
+{
+ unsigned char sha1[20];
+ unsigned int mode;
+
+ if (ctx->argc <= 3)
+ return error("option 'cacheinfo' expects three arguments");
+ if (strtoul_ui(*++ctx->argv, 8, &mode) ||
+ get_sha1_hex(*++ctx->argv, sha1) ||
+ add_cacheinfo(mode, sha1, *++ctx->argv, 0))
+ die("git update-index: --cacheinfo cannot add %s", *ctx->argv);
+ ctx->argc -= 3;
+ return 0;
+}
+
+static int stdin_cacheinfo_callback(struct parse_opt_ctx_t *ctx,
+ const struct option *opt, int unset)
+{
+ int *line_termination = opt->value;
+
+ 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(*line_termination);
+ return 0;
+}
+
+static int stdin_callback(struct parse_opt_ctx_t *ctx,
+ const struct option *opt, int unset)
+{
+ int *read_from_stdin = opt->value;
+
+ if (ctx->argc != 1)
+ return error("option '%s' must be the last argument", opt->long_name);
+ *read_from_stdin = 1;
+ return 0;
+}
+
+static int unresolve_callback(struct parse_opt_ctx_t *ctx,
+ const struct option *opt, int flags)
+{
+ int *has_errors = opt->value;
+ const char *prefix = startup_info->prefix;
+
+ /* consume remaining arguments. */
+ *has_errors = do_unresolve(ctx->argc, ctx->argv,
+ prefix, prefix ? strlen(prefix) : 0);
+ if (*has_errors)
+ active_cache_changed = 0;
+
+ ctx->argv += ctx->argc - 1;
+ ctx->argc = 1;
+ return 0;
+}
+
+static int reupdate_callback(struct parse_opt_ctx_t *ctx,
+ const struct option *opt, int flags)
+{
+ int *has_errors = opt->value;
+ const char *prefix = startup_info->prefix;
+
+ /* consume remaining arguments. */
+ setup_work_tree();
+ *has_errors = do_reupdate(ctx->argc, ctx->argv,
+ prefix, prefix ? strlen(prefix) : 0);
+ if (*has_errors)
+ active_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, line_termination = '\n';
+ int read_from_stdin = 0;
+ int prefix_length = prefix ? strlen(prefix) : 0;
+ char set_executable_bit = 0;
+ struct refresh_params refresh_args = {0, &has_errors};
+ int lock_error = 0;
+ struct lock_file *lock_file;
+ struct parse_opt_ctx_t ctx;
+ int parseopt_state = PARSE_OPT_UNKNOWN;
+ struct option options[] = {
+ OPT_BIT('q', NULL, &refresh_args.flags,
+ "continue refresh even when index needs update",
+ REFRESH_QUIET),
+ OPT_BIT(0, "ignore-submodules", &refresh_args.flags,
+ "refresh: ignore submodules",
+ REFRESH_IGNORE_SUBMODULES),
+ OPT_SET_INT(0, "add", &allow_add,
+ "do not ignore new files", 1),
+ OPT_SET_INT(0, "replace", &allow_replace,
+ "let files replace directories and vice-versa", 1),
+ OPT_SET_INT(0, "remove", &allow_remove,
+ "notice files missing from worktree", 1),
+ OPT_BIT(0, "unmerged", &refresh_args.flags,
+ "refresh even if index contains unmerged entries",
+ REFRESH_UNMERGED),
+ {OPTION_CALLBACK, 0, "refresh", &refresh_args, NULL,
+ "refresh stat information",
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG,
+ refresh_callback},
+ {OPTION_CALLBACK, 0, "really-refresh", &refresh_args, NULL,
+ "like --refresh, but ignore assume-unchanged setting",
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG,
+ really_refresh_callback},
+ {OPTION_LOWLEVEL_CALLBACK, 0, "cacheinfo", NULL,
+ "<mode> <object> <path>",
+ "add the specified entry to the index",
+ PARSE_OPT_NOARG | /* disallow --cacheinfo=<mode> form */
+ PARSE_OPT_NONEG | PARSE_OPT_LITERAL_ARGHELP,
+ (parse_opt_cb *) cacheinfo_callback},
+ {OPTION_CALLBACK, 0, "chmod", &set_executable_bit, "(+/-)x",
+ "override the executable bit of the listed files",
+ PARSE_OPT_NONEG | PARSE_OPT_LITERAL_ARGHELP,
+ chmod_callback},
+ {OPTION_SET_INT, 0, "assume-unchanged", &mark_valid_only, NULL,
+ "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,
+ "clear assumed-unchanged bit",
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, UNMARK_FLAG},
+ {OPTION_SET_INT, 0, "skip-worktree", &mark_skip_worktree_only, NULL,
+ "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,
+ "clear skip-worktree bit",
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, UNMARK_FLAG},
+ OPT_SET_INT(0, "info-only", &info_only,
+ "add to index only; do not add content to object database", 1),
+ OPT_SET_INT(0, "force-remove", &force_remove,
+ "remove named paths even if present in worktree", 1),
+ OPT_SET_INT('z', NULL, &line_termination,
+ "with --stdin: input lines are terminated by null bytes", '\0'),
+ {OPTION_LOWLEVEL_CALLBACK, 0, "stdin", &read_from_stdin, NULL,
+ "read list of paths to be updated from standard input",
+ PARSE_OPT_NONEG | PARSE_OPT_NOARG,
+ (parse_opt_cb *) stdin_callback},
+ {OPTION_LOWLEVEL_CALLBACK, 0, "index-info", &line_termination, NULL,
+ "add entries from standard input to the index",
+ PARSE_OPT_NONEG | PARSE_OPT_NOARG,
+ (parse_opt_cb *) stdin_cacheinfo_callback},
+ {OPTION_LOWLEVEL_CALLBACK, 0, "unresolve", &has_errors, NULL,
+ "repopulate stages #2 and #3 for the listed paths",
+ PARSE_OPT_NONEG | PARSE_OPT_NOARG,
+ (parse_opt_cb *) unresolve_callback},
+ {OPTION_LOWLEVEL_CALLBACK, 'g', "again", &has_errors, NULL,
+ "only update entries that differ from HEAD",
+ PARSE_OPT_NONEG | PARSE_OPT_NOARG,
+ (parse_opt_cb *) reupdate_callback},
+ OPT_BIT(0, "ignore-missing", &refresh_args.flags,
+ "ignore files missing from worktree",
+ REFRESH_IGNORE_MISSING),
+ OPT_SET_INT(0, "verbose", &verbose,
+ "report actions to standard output", 1),
+ {OPTION_CALLBACK, 0, "clear-resolve-undo", NULL, NULL,
+ "(for porcelains) forget saved unresolved conflicts",
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG,
+ resolve_undo_clear_callback},
+ OPT_END()
+ };
+
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage(update_index_usage[0]);
+
+ git_config(git_default_config, NULL);
+
+ /* We can't free this memory, it becomes part of a linked list parsed atexit() */
+ lock_file = xcalloc(1, sizeof(struct lock_file));
+
+ newfd = hold_locked_index(lock_file, 0);
+ if (newfd < 0)
+ lock_error = errno;
+
+ entries = read_cache();
+ if (entries < 0)
+ die("cache corrupted");
+
+ /*
+ * 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);
+ 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:
+ exit(129);
+ case PARSE_OPT_NON_OPTION:
+ case PARSE_OPT_DONE:
+ {
+ const char *path = ctx.argv[0];
+ const char *p;
+
+ setup_work_tree();
+ p = prefix_path(prefix, prefix_length, path);
+ update_one(p, NULL, 0);
+ if (set_executable_bit)
+ chmod_path(set_executable_bit, p);
+ if (p < path || p > path + strlen(path))
+ free((char *)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);
+
+ if (read_from_stdin) {
+ struct strbuf buf = STRBUF_INIT, nbuf = STRBUF_INIT;
+
+ setup_work_tree();
+ while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
+ const char *p;
+ if (line_termination && buf.buf[0] == '"') {
+ strbuf_reset(&nbuf);
+ if (unquote_c_style(&nbuf, buf.buf, NULL))
+ die("line is badly quoted");
+ strbuf_swap(&buf, &nbuf);
+ }
+ p = prefix_path(prefix, prefix_length, buf.buf);
+ update_one(p, NULL, 0);
+ if (set_executable_bit)
+ chmod_path(set_executable_bit, p);
+ if (p < buf.buf || p > buf.buf + buf.len)
+ free((char *)p);
+ }
+ strbuf_release(&nbuf);
+ strbuf_release(&buf);
+ }
+
+ if (active_cache_changed) {
+ if (newfd < 0) {
+ if (refresh_args.flags & REFRESH_QUIET)
+ exit(128);
+ unable_to_lock_index_die(get_index_file(), lock_error);
+ }
+ if (write_cache(newfd, active_cache, active_nr) ||
+ commit_locked_index(lock_file))
+ die("Unable to write new index file");
+ }
+
+ rollback_lock_file(lock_file);
+
+ return has_errors ? 1 : 0;
+}