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Diffstat (limited to 'third_party/git/tmp-objdir.c')
-rw-r--r--third_party/git/tmp-objdir.c292
1 files changed, 0 insertions, 292 deletions
diff --git a/third_party/git/tmp-objdir.c b/third_party/git/tmp-objdir.c
deleted file mode 100644
index 91c00567f4..0000000000
--- a/third_party/git/tmp-objdir.c
+++ /dev/null
@@ -1,292 +0,0 @@
-#include "cache.h"
-#include "tmp-objdir.h"
-#include "dir.h"
-#include "sigchain.h"
-#include "string-list.h"
-#include "strbuf.h"
-#include "argv-array.h"
-#include "quote.h"
-#include "object-store.h"
-
-struct tmp_objdir {
-	struct strbuf path;
-	struct argv_array env;
-};
-
-/*
- * Allow only one tmp_objdir at a time in a running process, which simplifies
- * our signal/atexit cleanup routines.  It's doubtful callers will ever need
- * more than one, and we can expand later if so.  You can have many such
- * tmp_objdirs simultaneously in many processes, of course.
- */
-static struct tmp_objdir *the_tmp_objdir;
-
-static void tmp_objdir_free(struct tmp_objdir *t)
-{
-	strbuf_release(&t->path);
-	argv_array_clear(&t->env);
-	free(t);
-}
-
-static int tmp_objdir_destroy_1(struct tmp_objdir *t, int on_signal)
-{
-	int err;
-
-	if (!t)
-		return 0;
-
-	if (t == the_tmp_objdir)
-		the_tmp_objdir = NULL;
-
-	/*
-	 * This may use malloc via strbuf_grow(), but we should
-	 * have pre-grown t->path sufficiently so that this
-	 * doesn't happen in practice.
-	 */
-	err = remove_dir_recursively(&t->path, 0);
-
-	/*
-	 * When we are cleaning up due to a signal, we won't bother
-	 * freeing memory; it may cause a deadlock if the signal
-	 * arrived while libc's allocator lock is held.
-	 */
-	if (!on_signal)
-		tmp_objdir_free(t);
-	return err;
-}
-
-int tmp_objdir_destroy(struct tmp_objdir *t)
-{
-	return tmp_objdir_destroy_1(t, 0);
-}
-
-static void remove_tmp_objdir(void)
-{
-	tmp_objdir_destroy(the_tmp_objdir);
-}
-
-static void remove_tmp_objdir_on_signal(int signo)
-{
-	tmp_objdir_destroy_1(the_tmp_objdir, 1);
-	sigchain_pop(signo);
-	raise(signo);
-}
-
-/*
- * These env_* functions are for setting up the child environment; the
- * "replace" variant overrides the value of any existing variable with that
- * "key". The "append" variant puts our new value at the end of a list,
- * separated by PATH_SEP (which is what separate values in
- * GIT_ALTERNATE_OBJECT_DIRECTORIES).
- */
-static void env_append(struct argv_array *env, const char *key, const char *val)
-{
-	struct strbuf quoted = STRBUF_INIT;
-	const char *old;
-
-	/*
-	 * Avoid quoting if it's not necessary, for maximum compatibility
-	 * with older parsers which don't understand the quoting.
-	 */
-	if (*val == '"' || strchr(val, PATH_SEP)) {
-		strbuf_addch(&quoted, '"');
-		quote_c_style(val, &quoted, NULL, 1);
-		strbuf_addch(&quoted, '"');
-		val = quoted.buf;
-	}
-
-	old = getenv(key);
-	if (!old)
-		argv_array_pushf(env, "%s=%s", key, val);
-	else
-		argv_array_pushf(env, "%s=%s%c%s", key, old, PATH_SEP, val);
-
-	strbuf_release(&quoted);
-}
-
-static void env_replace(struct argv_array *env, const char *key, const char *val)
-{
-	argv_array_pushf(env, "%s=%s", key, val);
-}
-
-static int setup_tmp_objdir(const char *root)
-{
-	char *path;
-	int ret = 0;
-
-	path = xstrfmt("%s/pack", root);
-	ret = mkdir(path, 0777);
-	free(path);
-
-	return ret;
-}
-
-struct tmp_objdir *tmp_objdir_create(void)
-{
-	static int installed_handlers;
-	struct tmp_objdir *t;
-
-	if (the_tmp_objdir)
-		BUG("only one tmp_objdir can be used at a time");
-
-	t = xmalloc(sizeof(*t));
-	strbuf_init(&t->path, 0);
-	argv_array_init(&t->env);
-
-	strbuf_addf(&t->path, "%s/incoming-XXXXXX", get_object_directory());
-
-	/*
-	 * Grow the strbuf beyond any filename we expect to be placed in it.
-	 * If tmp_objdir_destroy() is called by a signal handler, then
-	 * we should be able to use the strbuf to remove files without
-	 * having to call malloc.
-	 */
-	strbuf_grow(&t->path, 1024);
-
-	if (!mkdtemp(t->path.buf)) {
-		/* free, not destroy, as we never touched the filesystem */
-		tmp_objdir_free(t);
-		return NULL;
-	}
-
-	the_tmp_objdir = t;
-	if (!installed_handlers) {
-		atexit(remove_tmp_objdir);
-		sigchain_push_common(remove_tmp_objdir_on_signal);
-		installed_handlers++;
-	}
-
-	if (setup_tmp_objdir(t->path.buf)) {
-		tmp_objdir_destroy(t);
-		return NULL;
-	}
-
-	env_append(&t->env, ALTERNATE_DB_ENVIRONMENT,
-		   absolute_path(get_object_directory()));
-	env_replace(&t->env, DB_ENVIRONMENT, absolute_path(t->path.buf));
-	env_replace(&t->env, GIT_QUARANTINE_ENVIRONMENT,
-		    absolute_path(t->path.buf));
-
-	return t;
-}
-
-/*
- * Make sure we copy packfiles and their associated metafiles in the correct
- * order. All of these ends_with checks are slightly expensive to do in
- * the midst of a sorting routine, but in practice it shouldn't matter.
- * We will have a relatively small number of packfiles to order, and loose
- * objects exit early in the first line.
- */
-static int pack_copy_priority(const char *name)
-{
-	if (!starts_with(name, "pack"))
-		return 0;
-	if (ends_with(name, ".keep"))
-		return 1;
-	if (ends_with(name, ".pack"))
-		return 2;
-	if (ends_with(name, ".idx"))
-		return 3;
-	return 4;
-}
-
-static int pack_copy_cmp(const char *a, const char *b)
-{
-	return pack_copy_priority(a) - pack_copy_priority(b);
-}
-
-static int read_dir_paths(struct string_list *out, const char *path)
-{
-	DIR *dh;
-	struct dirent *de;
-
-	dh = opendir(path);
-	if (!dh)
-		return -1;
-
-	while ((de = readdir(dh)))
-		if (de->d_name[0] != '.')
-			string_list_append(out, de->d_name);
-
-	closedir(dh);
-	return 0;
-}
-
-static int migrate_paths(struct strbuf *src, struct strbuf *dst);
-
-static int migrate_one(struct strbuf *src, struct strbuf *dst)
-{
-	struct stat st;
-
-	if (stat(src->buf, &st) < 0)
-		return -1;
-	if (S_ISDIR(st.st_mode)) {
-		if (!mkdir(dst->buf, 0777)) {
-			if (adjust_shared_perm(dst->buf))
-				return -1;
-		} else if (errno != EEXIST)
-			return -1;
-		return migrate_paths(src, dst);
-	}
-	return finalize_object_file(src->buf, dst->buf);
-}
-
-static int migrate_paths(struct strbuf *src, struct strbuf *dst)
-{
-	size_t src_len = src->len, dst_len = dst->len;
-	struct string_list paths = STRING_LIST_INIT_DUP;
-	int i;
-	int ret = 0;
-
-	if (read_dir_paths(&paths, src->buf) < 0)
-		return -1;
-	paths.cmp = pack_copy_cmp;
-	string_list_sort(&paths);
-
-	for (i = 0; i < paths.nr; i++) {
-		const char *name = paths.items[i].string;
-
-		strbuf_addf(src, "/%s", name);
-		strbuf_addf(dst, "/%s", name);
-
-		ret |= migrate_one(src, dst);
-
-		strbuf_setlen(src, src_len);
-		strbuf_setlen(dst, dst_len);
-	}
-
-	string_list_clear(&paths, 0);
-	return ret;
-}
-
-int tmp_objdir_migrate(struct tmp_objdir *t)
-{
-	struct strbuf src = STRBUF_INIT, dst = STRBUF_INIT;
-	int ret;
-
-	if (!t)
-		return 0;
-
-	strbuf_addbuf(&src, &t->path);
-	strbuf_addstr(&dst, get_object_directory());
-
-	ret = migrate_paths(&src, &dst);
-
-	strbuf_release(&src);
-	strbuf_release(&dst);
-
-	tmp_objdir_destroy(t);
-	return ret;
-}
-
-const char **tmp_objdir_env(const struct tmp_objdir *t)
-{
-	if (!t)
-		return NULL;
-	return t->env.argv;
-}
-
-void tmp_objdir_add_as_alternate(const struct tmp_objdir *t)
-{
-	add_to_alternates_memory(t->path.buf);
-}