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Diffstat (limited to 'third_party/git/server-info.c')
-rw-r--r--third_party/git/server-info.c367
1 files changed, 0 insertions, 367 deletions
diff --git a/third_party/git/server-info.c b/third_party/git/server-info.c
deleted file mode 100644
index 4d8199b1d9..0000000000
--- a/third_party/git/server-info.c
+++ /dev/null
@@ -1,367 +0,0 @@
-#include "cache.h"
-#include "dir.h"
-#include "repository.h"
-#include "refs.h"
-#include "object.h"
-#include "commit.h"
-#include "tag.h"
-#include "packfile.h"
-#include "object-store.h"
-#include "strbuf.h"
-
-struct update_info_ctx {
-	FILE *cur_fp;
-	FILE *old_fp; /* becomes NULL if it differs from cur_fp */
-	struct strbuf cur_sb;
-	struct strbuf old_sb;
-};
-
-static void uic_mark_stale(struct update_info_ctx *uic)
-{
-	fclose(uic->old_fp);
-	uic->old_fp = NULL;
-}
-
-static int uic_is_stale(const struct update_info_ctx *uic)
-{
-	return uic->old_fp == NULL;
-}
-
-static int uic_printf(struct update_info_ctx *uic, const char *fmt, ...)
-{
-	va_list ap;
-	int ret = -1;
-
-	va_start(ap, fmt);
-
-	if (uic_is_stale(uic)) {
-		ret = vfprintf(uic->cur_fp, fmt, ap);
-	} else {
-		ssize_t r;
-		struct strbuf *cur = &uic->cur_sb;
-		struct strbuf *old = &uic->old_sb;
-
-		strbuf_reset(cur);
-		strbuf_vinsertf(cur, 0, fmt, ap);
-
-		strbuf_reset(old);
-		strbuf_grow(old, cur->len);
-		r = fread(old->buf, 1, cur->len, uic->old_fp);
-		if (r != cur->len || memcmp(old->buf, cur->buf, r))
-			uic_mark_stale(uic);
-
-		if (fwrite(cur->buf, 1, cur->len, uic->cur_fp) == cur->len)
-			ret = 0;
-	}
-
-	va_end(ap);
-
-	return ret;
-}
-
-/*
- * Create the file "path" by writing to a temporary file and renaming
- * it into place. The contents of the file come from "generate", which
- * should return non-zero if it encounters an error.
- */
-static int update_info_file(char *path,
-			int (*generate)(struct update_info_ctx *),
-			int force)
-{
-	char *tmp = mkpathdup("%s_XXXXXX", path);
-	int ret = -1;
-	int fd = -1;
-	FILE *to_close;
-	struct update_info_ctx uic = {
-		.cur_fp = NULL,
-		.old_fp = NULL,
-		.cur_sb = STRBUF_INIT,
-		.old_sb = STRBUF_INIT
-	};
-
-	safe_create_leading_directories(path);
-	fd = git_mkstemp_mode(tmp, 0666);
-	if (fd < 0)
-		goto out;
-	to_close = uic.cur_fp = fdopen(fd, "w");
-	if (!uic.cur_fp)
-		goto out;
-	fd = -1;
-
-	/* no problem on ENOENT and old_fp == NULL, it's stale, now */
-	if (!force)
-		uic.old_fp = fopen_or_warn(path, "r");
-
-	/*
-	 * uic_printf will compare incremental comparison aginst old_fp
-	 * and mark uic as stale if needed
-	 */
-	ret = generate(&uic);
-	if (ret)
-		goto out;
-
-	/* new file may be shorter than the old one, check here */
-	if (!uic_is_stale(&uic)) {
-		struct stat st;
-		long new_len = ftell(uic.cur_fp);
-		int old_fd = fileno(uic.old_fp);
-
-		if (new_len < 0) {
-			ret = -1;
-			goto out;
-		}
-		if (fstat(old_fd, &st) || (st.st_size != (size_t)new_len))
-			uic_mark_stale(&uic);
-	}
-
-	uic.cur_fp = NULL;
-	if (fclose(to_close))
-		goto out;
-
-	if (uic_is_stale(&uic)) {
-		if (adjust_shared_perm(tmp) < 0)
-			goto out;
-		if (rename(tmp, path) < 0)
-			goto out;
-	} else {
-		unlink(tmp);
-	}
-	ret = 0;
-
-out:
-	if (ret) {
-		error_errno("unable to update %s", path);
-		if (uic.cur_fp)
-			fclose(uic.cur_fp);
-		else if (fd >= 0)
-			close(fd);
-		unlink(tmp);
-	}
-	free(tmp);
-	if (uic.old_fp)
-		fclose(uic.old_fp);
-	strbuf_release(&uic.old_sb);
-	strbuf_release(&uic.cur_sb);
-	return ret;
-}
-
-static int add_info_ref(const char *path, const struct object_id *oid,
-			int flag, void *cb_data)
-{
-	struct update_info_ctx *uic = cb_data;
-	struct object *o = parse_object(the_repository, oid);
-	if (!o)
-		return -1;
-
-	if (uic_printf(uic, "%s	%s\n", oid_to_hex(oid), path) < 0)
-		return -1;
-
-	if (o->type == OBJ_TAG) {
-		o = deref_tag(the_repository, o, path, 0);
-		if (o)
-			if (uic_printf(uic, "%s	%s^{}\n",
-				oid_to_hex(&o->oid), path) < 0)
-				return -1;
-	}
-	return 0;
-}
-
-static int generate_info_refs(struct update_info_ctx *uic)
-{
-	return for_each_ref(add_info_ref, uic);
-}
-
-static int update_info_refs(int force)
-{
-	char *path = git_pathdup("info/refs");
-	int ret = update_info_file(path, generate_info_refs, force);
-	free(path);
-	return ret;
-}
-
-/* packs */
-static struct pack_info {
-	struct packed_git *p;
-	int old_num;
-	int new_num;
-} **info;
-static int num_pack;
-
-static struct pack_info *find_pack_by_name(const char *name)
-{
-	int i;
-	for (i = 0; i < num_pack; i++) {
-		struct packed_git *p = info[i]->p;
-		if (!strcmp(pack_basename(p), name))
-			return info[i];
-	}
-	return NULL;
-}
-
-/* Returns non-zero when we detect that the info in the
- * old file is useless.
- */
-static int parse_pack_def(const char *packname, int old_cnt)
-{
-	struct pack_info *i = find_pack_by_name(packname);
-	if (i) {
-		i->old_num = old_cnt;
-		return 0;
-	}
-	else {
-		/* The file describes a pack that is no longer here */
-		return 1;
-	}
-}
-
-/* Returns non-zero when we detect that the info in the
- * old file is useless.
- */
-static int read_pack_info_file(const char *infofile)
-{
-	FILE *fp;
-	struct strbuf line = STRBUF_INIT;
-	int old_cnt = 0;
-	int stale = 1;
-
-	fp = fopen_or_warn(infofile, "r");
-	if (!fp)
-		return 1; /* nonexistent is not an error. */
-
-	while (strbuf_getline(&line, fp) != EOF) {
-		const char *arg;
-
-		if (!line.len)
-			continue;
-
-		if (skip_prefix(line.buf, "P ", &arg)) {
-			/* P name */
-			if (parse_pack_def(arg, old_cnt++))
-				goto out_stale;
-		} else if (line.buf[0] == 'D') {
-			/* we used to emit D but that was misguided. */
-			goto out_stale;
-		} else if (line.buf[0] == 'T') {
-			/* we used to emit T but nobody uses it. */
-			goto out_stale;
-		} else {
-			error("unrecognized: %s", line.buf);
-		}
-	}
-	stale = 0;
-
- out_stale:
-	strbuf_release(&line);
-	fclose(fp);
-	return stale;
-}
-
-static int compare_info(const void *a_, const void *b_)
-{
-	struct pack_info *const *a = a_;
-	struct pack_info *const *b = b_;
-
-	if (0 <= (*a)->old_num && 0 <= (*b)->old_num)
-		/* Keep the order in the original */
-		return (*a)->old_num - (*b)->old_num;
-	else if (0 <= (*a)->old_num)
-		/* Only A existed in the original so B is obviously newer */
-		return -1;
-	else if (0 <= (*b)->old_num)
-		/* The other way around. */
-		return 1;
-
-	/* then it does not matter but at least keep the comparison stable */
-	if ((*a)->p == (*b)->p)
-		return 0;
-	else if ((*a)->p < (*b)->p)
-		return -1;
-	else
-		return 1;
-}
-
-static void init_pack_info(const char *infofile, int force)
-{
-	struct packed_git *p;
-	int stale;
-	int i;
-	size_t alloc = 0;
-
-	for (p = get_all_packs(the_repository); p; p = p->next) {
-		/* we ignore things on alternate path since they are
-		 * not available to the pullers in general.
-		 */
-		if (!p->pack_local || !file_exists(p->pack_name))
-			continue;
-
-		i = num_pack++;
-		ALLOC_GROW(info, num_pack, alloc);
-		info[i] = xcalloc(1, sizeof(struct pack_info));
-		info[i]->p = p;
-		info[i]->old_num = -1;
-	}
-
-	if (infofile && !force)
-		stale = read_pack_info_file(infofile);
-	else
-		stale = 1;
-
-	for (i = 0; i < num_pack; i++)
-		if (stale)
-			info[i]->old_num = -1;
-
-	/* renumber them */
-	QSORT(info, num_pack, compare_info);
-	for (i = 0; i < num_pack; i++)
-		info[i]->new_num = i;
-}
-
-static void free_pack_info(void)
-{
-	int i;
-	for (i = 0; i < num_pack; i++)
-		free(info[i]);
-	free(info);
-}
-
-static int write_pack_info_file(struct update_info_ctx *uic)
-{
-	int i;
-	for (i = 0; i < num_pack; i++) {
-		if (uic_printf(uic, "P %s\n", pack_basename(info[i]->p)) < 0)
-			return -1;
-	}
-	if (uic_printf(uic, "\n") < 0)
-		return -1;
-	return 0;
-}
-
-static int update_info_packs(int force)
-{
-	char *infofile = mkpathdup("%s/info/packs", get_object_directory());
-	int ret;
-
-	init_pack_info(infofile, force);
-	ret = update_info_file(infofile, write_pack_info_file, force);
-	free_pack_info();
-	free(infofile);
-	return ret;
-}
-
-/* public */
-int update_server_info(int force)
-{
-	/* We would add more dumb-server support files later,
-	 * including index of available pack files and their
-	 * intended audiences.
-	 */
-	int errs = 0;
-
-	errs = errs | update_info_refs(force);
-	errs = errs | update_info_packs(force);
-
-	/* remove leftover rev-cache file if there is any */
-	unlink_or_warn(git_path("info/rev-cache"));
-
-	return errs;
-}