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git/builtin/worktree.c

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#include "cache.h"
#include "checkout.h"
#include "config.h"
#include "builtin.h"
#include "dir.h"
#include "parse-options.h"
#include "argv-array.h"
#include "branch.h"
#include "refs.h"
#include "run-command.h"
#include "sigchain.h"
#include "submodule.h"
#include "utf8.h"
#include "worktree.h"
static const char * const worktree_usage[] = {
N_("git worktree add [<options>] <path> [<commit-ish>]"),
N_("git worktree list [<options>]"),
N_("git worktree lock [<options>] <path>"),
N_("git worktree move <worktree> <new-path>"),
N_("git worktree prune [<options>]"),
N_("git worktree remove [<options>] <worktree>"),
N_("git worktree unlock <path>"),
NULL
};
struct add_opts {
int force;
int detach;
int quiet;
int checkout;
int keep_locked;
};
static int show_only;
static int verbose;
static int guess_remote;
static timestamp_t expire;
static int git_worktree_config(const char *var, const char *value, void *cb)
{
if (!strcmp(var, "worktree.guessremote")) {
guess_remote = git_config_bool(var, value);
return 0;
}
return git_default_config(var, value, cb);
}
static int delete_git_dir(const char *id)
{
struct strbuf sb = STRBUF_INIT;
int ret;
strbuf_addstr(&sb, git_common_path("worktrees/%s", id));
ret = remove_dir_recursively(&sb, 0);
if (ret < 0 && errno == ENOTDIR)
ret = unlink(sb.buf);
if (ret)
error_errno(_("failed to delete '%s'"), sb.buf);
strbuf_release(&sb);
return ret;
}
static void delete_worktrees_dir_if_empty(void)
{
rmdir(git_path("worktrees")); /* ignore failed removal */
}
static int prune_worktree(const char *id, struct strbuf *reason)
{
struct stat st;
char *path;
int fd;
size_t len;
ssize_t read_result;
if (!is_directory(git_path("worktrees/%s", id))) {
strbuf_addf(reason, _("Removing worktrees/%s: not a valid directory"), id);
return 1;
}
if (file_exists(git_path("worktrees/%s/locked", id)))
return 0;
if (stat(git_path("worktrees/%s/gitdir", id), &st)) {
strbuf_addf(reason, _("Removing worktrees/%s: gitdir file does not exist"), id);
return 1;
}
fd = open(git_path("worktrees/%s/gitdir", id), O_RDONLY);
if (fd < 0) {
strbuf_addf(reason, _("Removing worktrees/%s: unable to read gitdir file (%s)"),
id, strerror(errno));
return 1;
}
len = xsize_t(st.st_size);
path = xmallocz(len);
read_result = read_in_full(fd, path, len);
if (read_result < 0) {
strbuf_addf(reason, _("Removing worktrees/%s: unable to read gitdir file (%s)"),
id, strerror(errno));
close(fd);
free(path);
return 1;
}
close(fd);
if (read_result != len) {
strbuf_addf(reason,
_("Removing worktrees/%s: short read (expected %"PRIuMAX" bytes, read %"PRIuMAX")"),
id, (uintmax_t)len, (uintmax_t)read_result);
free(path);
return 1;
}
while (len && (path[len - 1] == '\n' || path[len - 1] == '\r'))
len--;
if (!len) {
strbuf_addf(reason, _("Removing worktrees/%s: invalid gitdir file"), id);
free(path);
return 1;
}
path[len] = '\0';
if (!file_exists(path)) {
free(path);
if (stat(git_path("worktrees/%s/index", id), &st) ||
st.st_mtime <= expire) {
strbuf_addf(reason, _("Removing worktrees/%s: gitdir file points to non-existent location"), id);
return 1;
} else {
return 0;
}
}
free(path);
return 0;
}
static void prune_worktrees(void)
{
struct strbuf reason = STRBUF_INIT;
DIR *dir = opendir(git_path("worktrees"));
struct dirent *d;
if (!dir)
return;
while ((d = readdir(dir)) != NULL) {
if (is_dot_or_dotdot(d->d_name))
continue;
strbuf_reset(&reason);
if (!prune_worktree(d->d_name, &reason))
continue;
if (show_only || verbose)
printf("%s\n", reason.buf);
if (show_only)
continue;
delete_git_dir(d->d_name);
}
closedir(dir);
if (!show_only)
delete_worktrees_dir_if_empty();
strbuf_release(&reason);
}
static int prune(int ac, const char **av, const char *prefix)
{
struct option options[] = {
OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
OPT__VERBOSE(&verbose, N_("report pruned working trees")),
OPT_EXPIRY_DATE(0, "expire", &expire,
N_("expire working trees older than <time>")),
OPT_END()
};
expire = TIME_MAX;
ac = parse_options(ac, av, prefix, options, worktree_usage, 0);
if (ac)
usage_with_options(worktree_usage, options);
prune_worktrees();
return 0;
}
static char *junk_work_tree;
static char *junk_git_dir;
static int is_junk;
static pid_t junk_pid;
static void remove_junk(void)
{
struct strbuf sb = STRBUF_INIT;
if (!is_junk || getpid() != junk_pid)
return;
if (junk_git_dir) {
strbuf_addstr(&sb, junk_git_dir);
remove_dir_recursively(&sb, 0);
strbuf_reset(&sb);
}
if (junk_work_tree) {
strbuf_addstr(&sb, junk_work_tree);
remove_dir_recursively(&sb, 0);
}
strbuf_release(&sb);
}
static void remove_junk_on_signal(int signo)
{
remove_junk();
sigchain_pop(signo);
raise(signo);
}
static const char *worktree_basename(const char *path, int *olen)
{
const char *name;
int len;
len = strlen(path);
while (len && is_dir_sep(path[len - 1]))
len--;
for (name = path + len - 1; name > path; name--)
if (is_dir_sep(*name)) {
name++;
break;
}
*olen = len;
return name;
}
static void validate_worktree_add(const char *path, const struct add_opts *opts)
{
struct worktree **worktrees;
struct worktree *wt;
int locked;
if (file_exists(path) && !is_empty_dir(path))
die(_("'%s' already exists"), path);
worktrees = get_worktrees(0);
/*
* find_worktree()'s suffix matching may undesirably find the main
* rather than a linked worktree (for instance, when the basenames
* of the main worktree and the one being created are the same).
* We're only interested in linked worktrees, so skip the main
* worktree with +1.
*/
wt = find_worktree(worktrees + 1, NULL, path);
if (!wt)
goto done;
locked = !!worktree_lock_reason(wt);
if ((!locked && opts->force) || (locked && opts->force > 1)) {
if (delete_git_dir(wt->id))
die(_("unable to re-add worktree '%s'"), path);
goto done;
}
if (locked)
die(_("'%s' is a missing but locked worktree;\nuse 'add -f -f' to override, or 'unlock' and 'prune' or 'remove' to clear"), path);
else
die(_("'%s' is a missing but already registered worktree;\nuse 'add -f' to override, or 'prune' or 'remove' to clear"), path);
done:
free_worktrees(worktrees);
}
static int add_worktree(const char *path, const char *refname,
const struct add_opts *opts)
{
struct strbuf sb_git = STRBUF_INIT, sb_repo = STRBUF_INIT;
struct strbuf sb = STRBUF_INIT;
const char *name;
struct child_process cp = CHILD_PROCESS_INIT;
struct argv_array child_env = ARGV_ARRAY_INIT;
unsigned int counter = 0;
int len, ret;
struct strbuf symref = STRBUF_INIT;
struct commit *commit = NULL;
int is_branch = 0;
struct strbuf sb_name = STRBUF_INIT;
validate_worktree_add(path, opts);
/* is 'refname' a branch or commit? */
if (!opts->detach && !strbuf_check_branch_ref(&symref, refname) &&
ref_exists(symref.buf)) {
is_branch = 1;
if (!opts->force)
die_if_checked_out(symref.buf, 0);
}
commit = lookup_commit_reference_by_name(refname);
if (!commit)
die(_("invalid reference: %s"), refname);
name = worktree_basename(path, &len);
strbuf_add(&sb, name, path + len - name);
sanitize_refname_component(sb.buf, &sb_name);
if (!sb_name.len)
BUG("How come '%s' becomes empty after sanitization?", sb.buf);
strbuf_reset(&sb);
name = sb_name.buf;
git_path_buf(&sb_repo, "worktrees/%s", name);
len = sb_repo.len;
if (safe_create_leading_directories_const(sb_repo.buf))
die_errno(_("could not create leading directories of '%s'"),
sb_repo.buf);
while (mkdir(sb_repo.buf, 0777)) {
counter++;
if ((errno != EEXIST) || !counter /* overflow */)
die_errno(_("could not create directory of '%s'"),
sb_repo.buf);
strbuf_setlen(&sb_repo, len);
strbuf_addf(&sb_repo, "%d", counter);
}
name = strrchr(sb_repo.buf, '/') + 1;
junk_pid = getpid();
atexit(remove_junk);
sigchain_push_common(remove_junk_on_signal);
junk_git_dir = xstrdup(sb_repo.buf);
is_junk = 1;
/*
* lock the incomplete repo so prune won't delete it, unlock
* after the preparation is over.
*/
strbuf_addf(&sb, "%s/locked", sb_repo.buf);
if (!opts->keep_locked)
write_file(sb.buf, "initializing");
else
write_file(sb.buf, "added with --lock");
strbuf_addf(&sb_git, "%s/.git", path);
if (safe_create_leading_directories_const(sb_git.buf))
die_errno(_("could not create leading directories of '%s'"),
sb_git.buf);
junk_work_tree = xstrdup(path);
strbuf_reset(&sb);
strbuf_addf(&sb, "%s/gitdir", sb_repo.buf);
write_file(sb.buf, "%s", real_path(sb_git.buf));
write_file(sb_git.buf, "gitdir: %s/worktrees/%s",
real_path(get_git_common_dir()), name);
/*
* This is to keep resolve_ref() happy. We need a valid HEAD
* or is_git_directory() will reject the directory. Any value which
* looks like an object ID will do since it will be immediately
* replaced by the symbolic-ref or update-ref invocation in the new
* worktree.
*/
strbuf_reset(&sb);
strbuf_addf(&sb, "%s/HEAD", sb_repo.buf);
write_file(sb.buf, "%s", oid_to_hex(&null_oid));
strbuf_reset(&sb);
strbuf_addf(&sb, "%s/commondir", sb_repo.buf);
write_file(sb.buf, "../..");
argv_array_pushf(&child_env, "%s=%s", GIT_DIR_ENVIRONMENT, sb_git.buf);
argv_array_pushf(&child_env, "%s=%s", GIT_WORK_TREE_ENVIRONMENT, path);
cp.git_cmd = 1;
if (!is_branch)
argv_array_pushl(&cp.args, "update-ref", "HEAD",
oid_to_hex(&commit->object.oid), NULL);
else {
argv_array_pushl(&cp.args, "symbolic-ref", "HEAD",
symref.buf, NULL);
if (opts->quiet)
argv_array_push(&cp.args, "--quiet");
}
cp.env = child_env.argv;
ret = run_command(&cp);
if (ret)
goto done;
if (opts->checkout) {
cp.argv = NULL;
argv_array_clear(&cp.args);
argv_array_pushl(&cp.args, "reset", "--hard", "--no-recurse-submodules", NULL);
if (opts->quiet)
argv_array_push(&cp.args, "--quiet");
cp.env = child_env.argv;
ret = run_command(&cp);
if (ret)
goto done;
}
is_junk = 0;
FREE_AND_NULL(junk_work_tree);
FREE_AND_NULL(junk_git_dir);
done:
if (ret || !opts->keep_locked) {
strbuf_reset(&sb);
strbuf_addf(&sb, "%s/locked", sb_repo.buf);
unlink_or_warn(sb.buf);
}
/*
* Hook failure does not warrant worktree deletion, so run hook after
* is_junk is cleared, but do return appropriate code when hook fails.
*/
if (!ret && opts->checkout) {
const char *hook = find_hook("post-checkout");
if (hook) {
const char *env[] = { "GIT_DIR", "GIT_WORK_TREE", NULL };
cp.git_cmd = 0;
cp.no_stdin = 1;
cp.stdout_to_stderr = 1;
cp.dir = path;
cp.env = env;
cp.argv = NULL;
cp.trace2_hook_name = "post-checkout";
argv_array_pushl(&cp.args, absolute_path(hook),
oid_to_hex(&null_oid),
oid_to_hex(&commit->object.oid),
"1", NULL);
ret = run_command(&cp);
}
}
argv_array_clear(&child_env);
strbuf_release(&sb);
strbuf_release(&symref);
strbuf_release(&sb_repo);
strbuf_release(&sb_git);
strbuf_release(&sb_name);
return ret;
}
static void print_preparing_worktree_line(int detach,
const char *branch,
const char *new_branch,
int force_new_branch)
{
if (force_new_branch) {
struct commit *commit = lookup_commit_reference_by_name(new_branch);
if (!commit)
printf_ln(_("Preparing worktree (new branch '%s')"), new_branch);
else
printf_ln(_("Preparing worktree (resetting branch '%s'; was at %s)"),
new_branch,
find_unique_abbrev(&commit->object.oid, DEFAULT_ABBREV));
} else if (new_branch) {
printf_ln(_("Preparing worktree (new branch '%s')"), new_branch);
} else {
struct strbuf s = STRBUF_INIT;
if (!detach && !strbuf_check_branch_ref(&s, branch) &&
ref_exists(s.buf))
printf_ln(_("Preparing worktree (checking out '%s')"),
branch);
else {
struct commit *commit = lookup_commit_reference_by_name(branch);
if (!commit)
die(_("invalid reference: %s"), branch);
printf_ln(_("Preparing worktree (detached HEAD %s)"),
find_unique_abbrev(&commit->object.oid, DEFAULT_ABBREV));
}
strbuf_release(&s);
}
}
static const char *dwim_branch(const char *path, const char **new_branch)
{
int n;
const char *s = worktree_basename(path, &n);
const char *branchname = xstrndup(s, n);
struct strbuf ref = STRBUF_INIT;
UNLEAK(branchname);
if (!strbuf_check_branch_ref(&ref, branchname) &&
ref_exists(ref.buf)) {
strbuf_release(&ref);
return branchname;
}
*new_branch = branchname;
if (guess_remote) {
struct object_id oid;
const char *remote =
unique_tracking_name(*new_branch, &oid, NULL);
return remote;
}
return NULL;
}
static int add(int ac, const char **av, const char *prefix)
{
struct add_opts opts;
const char *new_branch_force = NULL;
char *path;
const char *branch;
const char *new_branch = NULL;
const char *opt_track = NULL;
struct option options[] = {
OPT__FORCE(&opts.force,
N_("checkout <branch> even if already checked out in other worktree"),
PARSE_OPT_NOCOMPLETE),
OPT_STRING('b', NULL, &new_branch, N_("branch"),
N_("create a new branch")),
OPT_STRING('B', NULL, &new_branch_force, N_("branch"),
N_("create or reset a branch")),
OPT_BOOL(0, "detach", &opts.detach, N_("detach HEAD at named commit")),
OPT_BOOL(0, "checkout", &opts.checkout, N_("populate the new working tree")),
OPT_BOOL(0, "lock", &opts.keep_locked, N_("keep the new working tree locked")),
OPT__QUIET(&opts.quiet, N_("suppress progress reporting")),
OPT_PASSTHRU(0, "track", &opt_track, NULL,
N_("set up tracking mode (see git-branch(1))"),
PARSE_OPT_NOARG | PARSE_OPT_OPTARG),
OPT_BOOL(0, "guess-remote", &guess_remote,
N_("try to match the new branch name with a remote-tracking branch")),
OPT_END()
};
memset(&opts, 0, sizeof(opts));
opts.checkout = 1;
ac = parse_options(ac, av, prefix, options, worktree_usage, 0);
if (!!opts.detach + !!new_branch + !!new_branch_force > 1)
die(_("-b, -B, and --detach are mutually exclusive"));
if (ac < 1 || ac > 2)
usage_with_options(worktree_usage, options);
path = prefix_filename(prefix, av[0]);
branch = ac < 2 ? "HEAD" : av[1];
if (!strcmp(branch, "-"))
branch = "@{-1}";
if (new_branch_force) {
struct strbuf symref = STRBUF_INIT;
new_branch = new_branch_force;
if (!opts.force &&
!strbuf_check_branch_ref(&symref, new_branch) &&
ref_exists(symref.buf))
die_if_checked_out(symref.buf, 0);
strbuf_release(&symref);
}
if (ac < 2 && !new_branch && !opts.detach) {
const char *s = dwim_branch(path, &new_branch);
if (s)
branch = s;
}
if (ac == 2 && !new_branch && !opts.detach) {
struct object_id oid;
struct commit *commit;
const char *remote;
commit = lookup_commit_reference_by_name(branch);
if (!commit) {
remote = unique_tracking_name(branch, &oid, NULL);
if (remote) {
new_branch = branch;
branch = remote;
}
}
}
if (!opts.quiet)
print_preparing_worktree_line(opts.detach, branch, new_branch, !!new_branch_force);
if (new_branch) {
struct child_process cp = CHILD_PROCESS_INIT;
cp.git_cmd = 1;
argv_array_push(&cp.args, "branch");
if (new_branch_force)
argv_array_push(&cp.args, "--force");
if (opts.quiet)
argv_array_push(&cp.args, "--quiet");
argv_array_push(&cp.args, new_branch);
argv_array_push(&cp.args, branch);
if (opt_track)
argv_array_push(&cp.args, opt_track);
if (run_command(&cp))
return -1;
branch = new_branch;
} else if (opt_track) {
die(_("--[no-]track can only be used if a new branch is created"));
}
UNLEAK(path);
UNLEAK(opts);
return add_worktree(path, branch, &opts);
}
static void show_worktree_porcelain(struct worktree *wt)
{
printf("worktree %s\n", wt->path);
if (wt->is_bare)
printf("bare\n");
else {
printf("HEAD %s\n", oid_to_hex(&wt->head_oid));
if (wt->is_detached)
printf("detached\n");
else if (wt->head_ref)
printf("branch %s\n", wt->head_ref);
}
printf("\n");
}
static void show_worktree(struct worktree *wt, int path_maxlen, int abbrev_len)
{
struct strbuf sb = STRBUF_INIT;
int cur_path_len = strlen(wt->path);
int path_adj = cur_path_len - utf8_strwidth(wt->path);
strbuf_addf(&sb, "%-*s ", 1 + path_maxlen + path_adj, wt->path);
if (wt->is_bare)
strbuf_addstr(&sb, "(bare)");
else {
strbuf_addf(&sb, "%-*s ", abbrev_len,
find_unique_abbrev(&wt->head_oid, DEFAULT_ABBREV));
if (wt->is_detached)
strbuf_addstr(&sb, "(detached HEAD)");
else if (wt->head_ref) {
char *ref = shorten_unambiguous_ref(wt->head_ref, 0);
strbuf_addf(&sb, "[%s]", ref);
free(ref);
} else
strbuf_addstr(&sb, "(error)");
}
printf("%s\n", sb.buf);
strbuf_release(&sb);
}
static void measure_widths(struct worktree **wt, int *abbrev, int *maxlen)
{
int i;
for (i = 0; wt[i]; i++) {
int sha1_len;
int path_len = strlen(wt[i]->path);
if (path_len > *maxlen)
*maxlen = path_len;
sha1_len = strlen(find_unique_abbrev(&wt[i]->head_oid, *abbrev));
if (sha1_len > *abbrev)
*abbrev = sha1_len;
}
}
static int list(int ac, const char **av, const char *prefix)
{
int porcelain = 0;
struct option options[] = {
OPT_BOOL(0, "porcelain", &porcelain, N_("machine-readable output")),
OPT_END()
};
ac = parse_options(ac, av, prefix, options, worktree_usage, 0);
if (ac)
usage_with_options(worktree_usage, options);
else {
struct worktree **worktrees = get_worktrees(GWT_SORT_LINKED);
int path_maxlen = 0, abbrev = DEFAULT_ABBREV, i;
if (!porcelain)
measure_widths(worktrees, &abbrev, &path_maxlen);
for (i = 0; worktrees[i]; i++) {
if (porcelain)
show_worktree_porcelain(worktrees[i]);
else
show_worktree(worktrees[i], path_maxlen, abbrev);
}
free_worktrees(worktrees);
}
return 0;
}
static int lock_worktree(int ac, const char **av, const char *prefix)
{
const char *reason = "", *old_reason;
struct option options[] = {
OPT_STRING(0, "reason", &reason, N_("string"),
N_("reason for locking")),
OPT_END()
};
struct worktree **worktrees, *wt;
ac = parse_options(ac, av, prefix, options, worktree_usage, 0);
if (ac != 1)
usage_with_options(worktree_usage, options);
worktrees = get_worktrees(0);
wt = find_worktree(worktrees, prefix, av[0]);
if (!wt)
die(_("'%s' is not a working tree"), av[0]);
if (is_main_worktree(wt))
die(_("The main working tree cannot be locked or unlocked"));
old_reason = worktree_lock_reason(wt);
if (old_reason) {
if (*old_reason)
die(_("'%s' is already locked, reason: %s"),
av[0], old_reason);
die(_("'%s' is already locked"), av[0]);
}
write_file(git_common_path("worktrees/%s/locked", wt->id),
"%s", reason);
free_worktrees(worktrees);
return 0;
}
static int unlock_worktree(int ac, const char **av, const char *prefix)
{
struct option options[] = {
OPT_END()
};
struct worktree **worktrees, *wt;
int ret;
ac = parse_options(ac, av, prefix, options, worktree_usage, 0);
if (ac != 1)
usage_with_options(worktree_usage, options);
worktrees = get_worktrees(0);
wt = find_worktree(worktrees, prefix, av[0]);
if (!wt)
die(_("'%s' is not a working tree"), av[0]);
if (is_main_worktree(wt))
die(_("The main working tree cannot be locked or unlocked"));
if (!worktree_lock_reason(wt))
die(_("'%s' is not locked"), av[0]);
ret = unlink_or_warn(git_common_path("worktrees/%s/locked", wt->id));
free_worktrees(worktrees);
return ret;
}
static void validate_no_submodules(const struct worktree *wt)
{
struct index_state istate = { NULL };
struct strbuf path = STRBUF_INIT;
int i, found_submodules = 0;
if (is_directory(worktree_git_path(wt, "modules"))) {
/*
* There could be false positives, e.g. the "modules"
* directory exists but is empty. But it's a rare case and
* this simpler check is probably good enough for now.
*/
found_submodules = 1;
} else if (read_index_from(&istate, worktree_git_path(wt, "index"),
get_worktree_git_dir(wt)) > 0) {
for (i = 0; i < istate.cache_nr; i++) {
struct cache_entry *ce = istate.cache[i];
int err;
if (!S_ISGITLINK(ce->ce_mode))
continue;
strbuf_reset(&path);
strbuf_addf(&path, "%s/%s", wt->path, ce->name);
if (!is_submodule_populated_gently(path.buf, &err))
continue;
found_submodules = 1;
break;
}
}
discard_index(&istate);
strbuf_release(&path);
if (found_submodules)
die(_("working trees containing submodules cannot be moved or removed"));
}
static int move_worktree(int ac, const char **av, const char *prefix)
{
int force = 0;
struct option options[] = {
OPT__FORCE(&force,
N_("force move even if worktree is dirty or locked"),
PARSE_OPT_NOCOMPLETE),
OPT_END()
};
struct worktree **worktrees, *wt;
struct strbuf dst = STRBUF_INIT;
struct strbuf errmsg = STRBUF_INIT;
const char *reason = NULL;
char *path;
ac = parse_options(ac, av, prefix, options, worktree_usage, 0);
if (ac != 2)
usage_with_options(worktree_usage, options);
path = prefix_filename(prefix, av[1]);
strbuf_addstr(&dst, path);
free(path);
worktrees = get_worktrees(0);
wt = find_worktree(worktrees, prefix, av[0]);
if (!wt)
die(_("'%s' is not a working tree"), av[0]);
if (is_main_worktree(wt))
die(_("'%s' is a main working tree"), av[0]);
if (is_directory(dst.buf)) {
const char *sep = find_last_dir_sep(wt->path);
if (!sep)
die(_("could not figure out destination name from '%s'"),
wt->path);
strbuf_trim_trailing_dir_sep(&dst);
strbuf_addstr(&dst, sep);
}
if (file_exists(dst.buf))
die(_("target '%s' already exists"), dst.buf);
validate_no_submodules(wt);
if (force < 2)
reason = worktree_lock_reason(wt);
if (reason) {
if (*reason)
die(_("cannot move a locked working tree, lock reason: %s\nuse 'move -f -f' to override or unlock first"),
reason);
die(_("cannot move a locked working tree;\nuse 'move -f -f' to override or unlock first"));
}
if (validate_worktree(wt, &errmsg, 0))
die(_("validation failed, cannot move working tree: %s"),
errmsg.buf);
strbuf_release(&errmsg);
if (rename(wt->path, dst.buf) == -1)
die_errno(_("failed to move '%s' to '%s'"), wt->path, dst.buf);
update_worktree_location(wt, dst.buf);
strbuf_release(&dst);
free_worktrees(worktrees);
return 0;
}
/*
* Note, "git status --porcelain" is used to determine if it's safe to
* delete a whole worktree. "git status" does not ignore user
* configuration, so if a normal "git status" shows "clean" for the
* user, then it's ok to remove it.
*
* This assumption may be a bad one. We may want to ignore
* (potentially bad) user settings and only delete a worktree when
* it's absolutely safe to do so from _our_ point of view because we
* know better.
*/
static void check_clean_worktree(struct worktree *wt,
const char *original_path)
{
struct argv_array child_env = ARGV_ARRAY_INIT;
struct child_process cp;
char buf[1];
int ret;
/*
* Until we sort this out, all submodules are "dirty" and
* will abort this function.
*/
validate_no_submodules(wt);
argv_array_pushf(&child_env, "%s=%s/.git",
GIT_DIR_ENVIRONMENT, wt->path);
argv_array_pushf(&child_env, "%s=%s",
GIT_WORK_TREE_ENVIRONMENT, wt->path);
memset(&cp, 0, sizeof(cp));
argv_array_pushl(&cp.args, "status",
"--porcelain", "--ignore-submodules=none",
NULL);
cp.env = child_env.argv;
cp.git_cmd = 1;
cp.dir = wt->path;
cp.out = -1;
ret = start_command(&cp);
if (ret)
die_errno(_("failed to run 'git status' on '%s'"),
original_path);
ret = xread(cp.out, buf, sizeof(buf));
if (ret)
die(_("'%s' contains modified or untracked files, use --force to delete it"),
original_path);
close(cp.out);
ret = finish_command(&cp);
if (ret)
die_errno(_("failed to run 'git status' on '%s', code %d"),
original_path, ret);
}
static int delete_git_work_tree(struct worktree *wt)
{
struct strbuf sb = STRBUF_INIT;
int ret = 0;
strbuf_addstr(&sb, wt->path);
if (remove_dir_recursively(&sb, 0)) {
error_errno(_("failed to delete '%s'"), sb.buf);
ret = -1;
}
strbuf_release(&sb);
return ret;
}
static int remove_worktree(int ac, const char **av, const char *prefix)
{
int force = 0;
struct option options[] = {
OPT__FORCE(&force,
N_("force removal even if worktree is dirty or locked"),
PARSE_OPT_NOCOMPLETE),
OPT_END()
};
struct worktree **worktrees, *wt;
struct strbuf errmsg = STRBUF_INIT;
const char *reason = NULL;
int ret = 0;
ac = parse_options(ac, av, prefix, options, worktree_usage, 0);
if (ac != 1)
usage_with_options(worktree_usage, options);
worktrees = get_worktrees(0);
wt = find_worktree(worktrees, prefix, av[0]);
if (!wt)
die(_("'%s' is not a working tree"), av[0]);
if (is_main_worktree(wt))
die(_("'%s' is a main working tree"), av[0]);
if (force < 2)
reason = worktree_lock_reason(wt);
if (reason) {
if (*reason)
die(_("cannot remove a locked working tree, lock reason: %s\nuse 'remove -f -f' to override or unlock first"),
reason);
die(_("cannot remove a locked working tree;\nuse 'remove -f -f' to override or unlock first"));
}
if (validate_worktree(wt, &errmsg, WT_VALIDATE_WORKTREE_MISSING_OK))
die(_("validation failed, cannot remove working tree: %s"),
errmsg.buf);
strbuf_release(&errmsg);
if (file_exists(wt->path)) {
if (!force)
check_clean_worktree(wt, av[0]);
ret |= delete_git_work_tree(wt);
}
/*
* continue on even if ret is non-zero, there's no going back
* from here.
*/
ret |= delete_git_dir(wt->id);
delete_worktrees_dir_if_empty();
free_worktrees(worktrees);
return ret;
}
int cmd_worktree(int ac, const char **av, const char *prefix)
{
struct option options[] = {
OPT_END()
};
git_config(git_worktree_config, NULL);
if (ac < 2)
usage_with_options(worktree_usage, options);
if (!prefix)
prefix = "";
if (!strcmp(av[1], "add"))
return add(ac - 1, av + 1, prefix);
if (!strcmp(av[1], "prune"))
return prune(ac - 1, av + 1, prefix);
if (!strcmp(av[1], "list"))
return list(ac - 1, av + 1, prefix);
if (!strcmp(av[1], "lock"))
return lock_worktree(ac - 1, av + 1, prefix);
if (!strcmp(av[1], "unlock"))
return unlock_worktree(ac - 1, av + 1, prefix);
if (!strcmp(av[1], "move"))
return move_worktree(ac - 1, av + 1, prefix);
if (!strcmp(av[1], "remove"))
return remove_worktree(ac - 1, av + 1, prefix);
usage_with_options(worktree_usage, options);
}
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