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git/builtin/update-index.c

1306 lines
35 KiB

/*
* GIT - The information manager from hell
*
* Copyright (C) Linus Torvalds, 2005
*/
#define USE_THE_INDEX_COMPATIBILITY_MACROS
#include "cache.h"
#include "bulk-checkin.h"
#include "config.h"
#include "lockfile.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"
#include "pathspec.h"
#include "dir.h"
#include "split-index.h"
#include "fsmonitor.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 = cache_name_pos(path, namelen);
if (0 <= pos) {
mark_fsmonitor_invalid(&the_index, active_cache[pos]);
if (mark)
active_cache[pos]->ce_flags |= flag;
else
active_cache[pos]->ce_flags &= ~flag;
active_cache[pos]->ce_flags |= CE_UPDATE_IN_BASE;
cache_tree_invalidate_path(&the_index, path);
active_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_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 (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) && !ce_match_stat(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_cache_entry(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 = cache_name_pos(path, len);
/* Exact match: file or existing gitlink */
if (pos >= 0) {
const 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", &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 < active_nr) {
const 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", &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 = 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 (!ignore_skip_worktree_entries && 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 (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_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(char flip, const char *path)
{
int pos;
struct cache_entry *ce;
pos = cache_name_pos(path, strlen(path));
if (pos < 0)
goto fail;
ce = active_cache[pos];
if (chmod_cache_entry(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_cache(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_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[-(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 object_id head_oid;
static struct object_id merge_head_oid;
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)
{
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) {
const 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) {
const 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_oid, path, namelen, 2);
ce_3 = read_one_ent("their", &merge_head_oid, path, namelen, 3);
if (!ce_2 || !ce_3) {
ret = -1;
goto free_return;
}
if (oideq(&ce_2->oid, &ce_3->oid) &&
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:
discard_cache_entry(ce_2);
discard_cache_entry(ce_3);
return ret;
}
static void read_head_pointers(void)
{
if (read_ref("HEAD", &head_oid))
die("No HEAD -- no initial commit yet?");
if (read_ref("MERGE_HEAD", &merge_head_oid)) {
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];
char *p = prefix_path(prefix, prefix_length, arg);
err |= unresolve_one(p);
free(p);
}
return err;
}
static int do_reupdate(int ac, const char **av,
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;
parse_pathspec(&pathspec, 0,
PATHSPEC_PREFER_CWD,
prefix, av + 1);
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 < active_nr; pos++) {
const struct cache_entry *ce = active_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 = active_nr;
path = xstrdup(ce->name);
update_one(path);
free(path);
discard_cache_entry(old);
if (save_nr != active_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();
read_cache();
*o->has_errors |= refresh_cache(o->flags | flag);
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_cache() as these are no actual errors.
* cmd_status() does the same.
*/
active_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,
const char *arg, int unset)
{
BUG_ON_OPT_NEG(unset);
BUG_ON_OPT_ARG(arg);
resolve_undo_clear();
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,
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)
active_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->argc, ctx->argv, prefix);
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, 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_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 = hold_locked_index(&lock_file, 0);
if (newfd < 0)
lock_error = errno;
entries = read_cache();
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 < 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);
if (the_index.version != preferred_index_format)
active_cache_changed |= SOMETHING_CHANGED;
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 (active_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;
}