/*
* Used to set up core.excludesfile and .git/info/exclude lists.
*/
void add_excludes_from_file(struct dir_struct *dir, const char *fname)
{
struct exclude_list *el;
el = add_exclude_list(dir, EXC_FILE, fname);
if (add_excludes_from_file_to_list(fname, "", 0, el, 0) < 0)
die("cannot use %s as an exclude file", fname);
}
static void prep_exclude(struct dir_struct *dir, const char *base, int baselen)
{
struct exclude_list *el;
struct exclude_stack *stk = NULL;
int current;
if ((!dir->exclude_per_dir) ||
(baselen + strlen(dir->exclude_per_dir) >= PATH_MAX))
return; /* too long a path -- ignore */
/* Pop the ones that are not the prefix of the path being checked. */
el = &dir->exclude_list[EXC_DIRS];
while ((stk = dir->exclude_stack) != NULL) {
if (stk->baselen <= baselen &&
!strncmp(dir->basebuf, base, stk->baselen))
break;
dir->exclude_stack = stk->prev;
while (stk->exclude_ix < el->nr)
free(el->excludes[--el->nr]);
free(stk->filebuf);
free(stk);
}
/* Read from the parent directories and push them down. */
current = stk ? stk->baselen : -1;
while (current < baselen) {
struct exclude_stack *stk = xcalloc(1, sizeof(*stk));
const char *cp;
if (current < 0) {
cp = base;
current = 0;
}
else {
cp = strchr(base + current + 1, '/');
if (!cp)
die("oops in prep_exclude");
cp++;
}
stk->prev = dir->exclude_stack;
stk->baselen = cp - base;
stk->exclude_ix = el->nr;
memcpy(dir->basebuf + current, base + current,
stk->baselen - current);
strcpy(dir->basebuf + stk->baselen, dir->exclude_per_dir);
add_excludes_from_file_to_list(dir->basebuf,
dir->basebuf, stk->baselen,
&stk->filebuf, el, 1);
dir->exclude_stack = stk;
current = stk->baselen;
}
dir->basebuf[baselen] = '\0';
}
struct walker *get_http_walker(const char *url)
{
char *s;
struct walker_data *data = xmalloc(sizeof(struct walker_data));
struct walker *walker = xmalloc(sizeof(struct walker));
data->alt = xmalloc(sizeof(*data->alt));
data->alt->base = xmalloc(strlen(url) + 1);
strcpy(data->alt->base, url);
for (s = data->alt->base + strlen(data->alt->base) - 1; *s == '/'; --s)
*s = 0;
data->alt->got_indices = 0;
data->alt->packs = NULL;
data->alt->next = NULL;
data->got_alternates = -1;
walker->corrupt_object_found = 0;
walker->fetch = fetch;
walker->fetch_ref = fetch_ref;
walker->prefetch = prefetch;
walker->cleanup = cleanup;
walker->data = data;
walker->skip_sparse_checkout = !core_apply_sparse_checkout;
memset(&walker->exclude_list, 0, sizeof(walker->exclude_list));
if (!walker->skip_sparse_checkout) {
if (add_excludes_from_file_to_list(git_path("info/sparse-checkout"), "", 0, &walker->exclude_list, 0) < 0)
walker->skip_sparse_checkout = 1;
}
walker->sparse_checkout_list_count = 0;
walker->sparse_checkout_list_size = 256;
walker->sparse_checkout_list = !walker->skip_sparse_checkout ? xmalloc(walker->sparse_checkout_list_size * sizeof(unsigned char[20])) : NULL;
#ifdef USE_CURL_MULTI
add_fill_function(walker, (int (*)(void *)) fill_active_slot);
#endif
return walker;
}
/*
* N-way merge "len" trees. Returns 0 on success, -1 on failure to manipulate the
* resulting index, -2 on failure to reflect the changes to the work tree.
*
* CE_ADDED, CE_UNPACKED and CE_NEW_SKIP_WORKTREE are used internally
*/
int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options *o)
{
int i, ret;
static struct cache_entry *dfc;
struct exclude_list el;
if (len > MAX_UNPACK_TREES)
die("unpack_trees takes at most %d trees", MAX_UNPACK_TREES);
memset(&state, 0, sizeof(state));
state.base_dir = "";
state.force = 1;
state.quiet = 1;
state.refresh_cache = 1;
state.istate = &o->result;
memset(&el, 0, sizeof(el));
if (!core_apply_sparse_checkout || !o->update)
o->skip_sparse_checkout = 1;
if (!o->skip_sparse_checkout) {
char *sparse = git_pathdup("info/sparse-checkout");
if (add_excludes_from_file_to_list(sparse, "", 0, &el, 0) < 0)
o->skip_sparse_checkout = 1;
else
o->el = ⪙
free(sparse);
}
memset(&o->result, 0, sizeof(o->result));
o->result.initialized = 1;
o->result.timestamp.sec = o->src_index->timestamp.sec;
o->result.timestamp.nsec = o->src_index->timestamp.nsec;
o->result.version = o->src_index->version;
o->result.split_index = o->src_index->split_index;
if (o->result.split_index)
o->result.split_index->refcount++;
hashcpy(o->result.sha1, o->src_index->sha1);
o->merge_size = len;
mark_all_ce_unused(o->src_index);
/*
* Sparse checkout loop #1: set NEW_SKIP_WORKTREE on existing entries
*/
if (!o->skip_sparse_checkout)
mark_new_skip_worktree(o->el, o->src_index, 0, CE_NEW_SKIP_WORKTREE);
if (!dfc)
dfc = xcalloc(1, cache_entry_size(0));
o->df_conflict_entry = dfc;
if (len) {
const char *prefix = o->prefix ? o->prefix : "";
struct traverse_info info;
setup_traverse_info(&info, prefix);
info.fn = unpack_callback;
info.data = o;
info.show_all_errors = o->show_all_errors;
info.pathspec = o->pathspec;
if (o->prefix) {
/*
* Unpack existing index entries that sort before the
* prefix the tree is spliced into. Note that o->merge
* is always true in this case.
*/
while (1) {
struct cache_entry *ce = next_cache_entry(o);
if (!ce)
break;
if (ce_in_traverse_path(ce, &info))
break;
if (unpack_index_entry(ce, o) < 0)
goto return_failed;
}
}
if (traverse_trees(len, t, &info) < 0)
goto return_failed;
}
/* Any left-over entries in the index? */
if (o->merge) {
while (1) {
struct cache_entry *ce = next_cache_entry(o);
if (!ce)
break;
if (unpack_index_entry(ce, o) < 0)
goto return_failed;
}
}
mark_all_ce_unused(o->src_index);
if (o->trivial_merges_only && o->nontrivial_merge) {
ret = unpack_failed(o, "Merge requires file-level merging");
goto done;
}
if (!o->skip_sparse_checkout) {
int empty_worktree = 1;
/*
* Sparse checkout loop #2: set NEW_SKIP_WORKTREE on entries not in loop #1
* If the will have NEW_SKIP_WORKTREE, also set CE_SKIP_WORKTREE
* so apply_sparse_checkout() won't attempt to remove it from worktree
*/
mark_new_skip_worktree(o->el, &o->result, CE_ADDED, CE_SKIP_WORKTREE | CE_NEW_SKIP_WORKTREE);
ret = 0;
for (i = 0; i < o->result.cache_nr; i++) {
struct cache_entry *ce = o->result.cache[i];
/*
* Entries marked with CE_ADDED in merged_entry() do not have
* verify_absent() check (the check is effectively disabled
* because CE_NEW_SKIP_WORKTREE is set unconditionally).
*
* Do the real check now because we have had
* correct CE_NEW_SKIP_WORKTREE
*/
if (ce->ce_flags & CE_ADDED &&
verify_absent(ce, ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN, o)) {
if (!o->show_all_errors)
goto return_failed;
ret = -1;
}
if (apply_sparse_checkout(&o->result, ce, o)) {
if (!o->show_all_errors)
goto return_failed;
ret = -1;
}
if (!ce_skip_worktree(ce))
empty_worktree = 0;
}
if (ret < 0)
goto return_failed;
/*
* Sparse checkout is meant to narrow down checkout area
* but it does not make sense to narrow down to empty working
* tree. This is usually a mistake in sparse checkout rules.
* Do not allow users to do that.
*/
if (o->result.cache_nr && empty_worktree) {
ret = unpack_failed(o, "Sparse checkout leaves no entry on working directory");
goto done;
}
}
o->src_index = NULL;
ret = check_updates(o) ? (-2) : 0;
if (o->dst_index) {
if (!ret) {
if (!o->result.cache_tree)
o->result.cache_tree = cache_tree();
if (!cache_tree_fully_valid(o->result.cache_tree))
cache_tree_update(&o->result,
WRITE_TREE_SILENT |
WRITE_TREE_REPAIR);
}
discard_index(o->dst_index);
*o->dst_index = o->result;
} else {
discard_index(&o->result);
}
done:
clear_exclude_list(&el);
return ret;
return_failed:
if (o->show_all_errors)
display_error_msgs(o);
mark_all_ce_unused(o->src_index);
ret = unpack_failed(o, NULL);
if (o->exiting_early)
ret = 0;
goto done;
}
void add_excludes_from_file(struct dir_struct *dir, const char *fname)
{
if (add_excludes_from_file_to_list(fname, "", 0, NULL,
&dir->exclude_list[EXC_FILE], 0) < 0)
die("cannot use %s as an exclude file", fname);
}
/*
* Loads the per-directory exclude list for the substring of base
* which has a char length of baselen.
*/
static void prep_exclude(struct dir_struct *dir, const char *base, int baselen)
{
struct exclude_list_group *group;
struct exclude_list *el;
struct exclude_stack *stk = NULL;
int current;
group = &dir->exclude_list_group[EXC_DIRS];
/* Pop the exclude lists from the EXCL_DIRS exclude_list_group
* which originate from directories not in the prefix of the
* path being checked. */
while ((stk = dir->exclude_stack) != NULL) {
if (stk->baselen <= baselen &&
!strncmp(dir->basebuf, base, stk->baselen))
break;
el = &group->el[dir->exclude_stack->exclude_ix];
dir->exclude_stack = stk->prev;
dir->exclude = NULL;
free((char *)el->src); /* see strdup() below */
clear_exclude_list(el);
free(stk);
group->nr--;
}
/* Skip traversing into sub directories if the parent is excluded */
if (dir->exclude)
return;
/* Read from the parent directories and push them down. */
current = stk ? stk->baselen : -1;
while (current < baselen) {
struct exclude_stack *stk = xcalloc(1, sizeof(*stk));
const char *cp;
if (current < 0) {
cp = base;
current = 0;
}
else {
cp = strchr(base + current + 1, '/');
if (!cp)
die("oops in prep_exclude");
cp++;
}
stk->prev = dir->exclude_stack;
stk->baselen = cp - base;
stk->exclude_ix = group->nr;
el = add_exclude_list(dir, EXC_DIRS, NULL);
memcpy(dir->basebuf + current, base + current,
stk->baselen - current);
/* Abort if the directory is excluded */
if (stk->baselen) {
int dt = DT_DIR;
dir->basebuf[stk->baselen - 1] = 0;
dir->exclude = last_exclude_matching_from_lists(dir,
dir->basebuf, stk->baselen - 1,
dir->basebuf + current, &dt);
dir->basebuf[stk->baselen - 1] = '/';
if (dir->exclude &&
dir->exclude->flags & EXC_FLAG_NEGATIVE)
dir->exclude = NULL;
if (dir->exclude) {
dir->basebuf[stk->baselen] = 0;
dir->exclude_stack = stk;
return;
}
}
/* Try to read per-directory file unless path is too long */
if (dir->exclude_per_dir &&
stk->baselen + strlen(dir->exclude_per_dir) < PATH_MAX) {
strcpy(dir->basebuf + stk->baselen,
dir->exclude_per_dir);
/*
* dir->basebuf gets reused by the traversal, but we
* need fname to remain unchanged to ensure the src
* member of each struct exclude correctly
* back-references its source file. Other invocations
* of add_exclude_list provide stable strings, so we
* strdup() and free() here in the caller.
*/
el->src = strdup(dir->basebuf);
add_excludes_from_file_to_list(dir->basebuf,
dir->basebuf, stk->baselen, el, 1);
}
dir->exclude_stack = stk;
current = stk->baselen;
}
dir->basebuf[baselen] = '\0';
}
/*
* Loads the per-directory exclude list for the substring of base
* which has a char length of baselen.
*/
static void prep_exclude(struct dir_struct *dir, const char *base, int baselen)
{
struct exclude_list_group *group;
struct exclude_list *el;
struct exclude_stack *stk = NULL;
int current;
group = &dir->exclude_list_group[EXC_DIRS];
/*
* Pop the exclude lists from the EXCL_DIRS exclude_list_group
* which originate from directories not in the prefix of the
* path being checked.
*/
while ((stk = dir->exclude_stack) != NULL) {
if (stk->baselen <= baselen &&
!strncmp(dir->basebuf.buf, base, stk->baselen))
break;
el = &group->el[dir->exclude_stack->exclude_ix];
dir->exclude_stack = stk->prev;
dir->exclude = NULL;
free((char *)el->src); /* see strbuf_detach() below */
clear_exclude_list(el);
free(stk);
group->nr--;
}
/* Skip traversing into sub directories if the parent is excluded */
if (dir->exclude)
return;
/*
* Lazy initialization. All call sites currently just
* memset(dir, 0, sizeof(*dir)) before use. Changing all of
* them seems lots of work for little benefit.
*/
if (!dir->basebuf.buf)
strbuf_init(&dir->basebuf, PATH_MAX);
/* Read from the parent directories and push them down. */
current = stk ? stk->baselen : -1;
strbuf_setlen(&dir->basebuf, current < 0 ? 0 : current);
while (current < baselen) {
const char *cp;
stk = xcalloc(1, sizeof(*stk));
if (current < 0) {
cp = base;
current = 0;
} else {
cp = strchr(base + current + 1, '/');
if (!cp)
die("oops in prep_exclude");
cp++;
}
stk->prev = dir->exclude_stack;
stk->baselen = cp - base;
stk->exclude_ix = group->nr;
el = add_exclude_list(dir, EXC_DIRS, NULL);
strbuf_add(&dir->basebuf, base + current, stk->baselen - current);
assert(stk->baselen == dir->basebuf.len);
/* Abort if the directory is excluded */
if (stk->baselen) {
int dt = DT_DIR;
dir->basebuf.buf[stk->baselen - 1] = 0;
dir->exclude = last_exclude_matching_from_lists(dir,
dir->basebuf.buf, stk->baselen - 1,
dir->basebuf.buf + current, &dt);
dir->basebuf.buf[stk->baselen - 1] = '/';
if (dir->exclude &&
dir->exclude->flags & EXC_FLAG_NEGATIVE)
dir->exclude = NULL;
if (dir->exclude) {
dir->exclude_stack = stk;
return;
}
}
/* Try to read per-directory file */
if (dir->exclude_per_dir) {
/*
* dir->basebuf gets reused by the traversal, but we
* need fname to remain unchanged to ensure the src
* member of each struct exclude correctly
* back-references its source file. Other invocations
* of add_exclude_list provide stable strings, so we
* strbuf_detach() and free() here in the caller.
*/
struct strbuf sb = STRBUF_INIT;
strbuf_addbuf(&sb, &dir->basebuf);
strbuf_addstr(&sb, dir->exclude_per_dir);
el->src = strbuf_detach(&sb, NULL);
add_excludes_from_file_to_list(el->src, el->src,
stk->baselen, el, 1);
}
dir->exclude_stack = stk;
current = stk->baselen;
}
strbuf_setlen(&dir->basebuf, baselen);
}
