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-rw-r--r--update-cache.c401
1 files changed, 0 insertions, 401 deletions
diff --git a/update-cache.c b/update-cache.c
deleted file mode 100644
index 1fcc59a9c0..0000000000
--- a/update-cache.c
+++ /dev/null
@@ -1,401 +0,0 @@
-/*
- * GIT - The information manager from hell
- *
- * Copyright (C) Linus Torvalds, 2005
- */
-#include "cache.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-cache *" and suddenly having all the object
- * files be revision controlled.
- */
-static int allow_add = 0, allow_remove = 0, allow_replace = 0, not_new = 0, quiet = 0, info_only = 0;
-static int force_remove;
-
-/* Three functions to allow overloaded pointer return; see linux/err.h */
-static inline void *ERR_PTR(long error)
-{
- return (void *) error;
-}
-
-static inline long PTR_ERR(const void *ptr)
-{
- return (long) ptr;
-}
-
-static inline long IS_ERR(const void *ptr)
-{
- return (unsigned long)ptr > (unsigned long)-1000L;
-}
-
-static int add_file_to_cache(char *path)
-{
- int size, namelen, option, status;
- struct cache_entry *ce;
- struct stat st;
- int fd;
- char *target;
-
- status = lstat(path, &st);
- if (status < 0 || S_ISDIR(st.st_mode)) {
- /* When we used to have "path" and now we want to add
- * "path/file", we need a way to remove "path" before
- * being able to add "path/file". However,
- * "git-update-cache --remove path" would not work.
- * --force-remove can be used but this is more user
- * friendly, especially since we can do the opposite
- * case just fine without --force-remove.
- */
- if (status == 0 || (errno == ENOENT || errno == ENOTDIR)) {
- if (allow_remove)
- return remove_file_from_cache(path);
- }
- return error("open(\"%s\"): %s", path, strerror(errno));
- }
- namelen = strlen(path);
- size = cache_entry_size(namelen);
- ce = xmalloc(size);
- memset(ce, 0, size);
- memcpy(ce->name, path, namelen);
- fill_stat_cache_info(ce, &st);
- ce->ce_mode = create_ce_mode(st.st_mode);
- ce->ce_flags = htons(namelen);
- switch (st.st_mode & S_IFMT) {
- case S_IFREG:
- fd = open(path, O_RDONLY);
- if (fd < 0)
- return -1;
- if (index_fd(ce->sha1, fd, &st, !info_only, NULL) < 0)
- return -1;
- break;
- case S_IFLNK:
- target = xmalloc(st.st_size+1);
- if (readlink(path, target, st.st_size+1) != st.st_size) {
- free(target);
- return -1;
- }
- if (info_only) {
- unsigned char hdr[50];
- int hdrlen;
- write_sha1_file_prepare(target, st.st_size, "blob",
- ce->sha1, hdr, &hdrlen);
- } else if (write_sha1_file(target, st.st_size, "blob", ce->sha1))
- return -1;
- free(target);
- break;
- default:
- return -1;
- }
- option = allow_add ? ADD_CACHE_OK_TO_ADD : 0;
- option |= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0;
- return add_cache_entry(ce, option);
-}
-
-static int compare_data(struct cache_entry *ce, struct stat *st)
-{
- int match = -1;
- int fd = open(ce->name, O_RDONLY);
-
- if (fd >= 0) {
- unsigned char sha1[20];
- if (!index_fd(sha1, fd, st, 0, NULL))
- match = memcmp(sha1, ce->sha1, 20);
- close(fd);
- }
- return match;
-}
-
-static int compare_link(struct cache_entry *ce, unsigned long expected_size)
-{
- int match = -1;
- char *target;
- void *buffer;
- unsigned long size;
- char type[10];
- int len;
-
- target = xmalloc(expected_size);
- len = readlink(ce->name, target, expected_size);
- if (len != expected_size) {
- free(target);
- return -1;
- }
- buffer = read_sha1_file(ce->sha1, type, &size);
- if (!buffer) {
- free(target);
- return -1;
- }
- if (size == expected_size)
- match = memcmp(buffer, target, size);
- free(buffer);
- free(target);
- return match;
-}
-
-/*
- * "refresh" does not calculate a new sha1 file or bring the
- * cache up-to-date for mode/content changes. But what it
- * _does_ do is to "re-match" the stat information of a file
- * with the cache, so that you can refresh the cache for a
- * file that hasn't been changed but where the stat entry is
- * out of date.
- *
- * For example, you'd want to do this after doing a "git-read-tree",
- * to link up the stat cache details with the proper files.
- */
-static struct cache_entry *refresh_entry(struct cache_entry *ce)
-{
- struct stat st;
- struct cache_entry *updated;
- int changed, size;
-
- if (lstat(ce->name, &st) < 0)
- return ERR_PTR(-errno);
-
- changed = ce_match_stat(ce, &st);
- if (!changed)
- return ce;
-
- /*
- * If the mode or type has changed, there's no point in trying
- * to refresh the entry - it's not going to match
- */
- if (changed & (MODE_CHANGED | TYPE_CHANGED))
- return ERR_PTR(-EINVAL);
-
- switch (st.st_mode & S_IFMT) {
- case S_IFREG:
- if (compare_data(ce, &st))
- return ERR_PTR(-EINVAL);
- break;
- case S_IFLNK:
- if (compare_link(ce, st.st_size))
- return ERR_PTR(-EINVAL);
- break;
- default:
- return ERR_PTR(-EINVAL);
- }
-
- size = ce_size(ce);
- updated = xmalloc(size);
- memcpy(updated, ce, size);
- fill_stat_cache_info(updated, &st);
- return updated;
-}
-
-static int refresh_cache(void)
-{
- int i;
- int has_errors = 0;
-
- for (i = 0; i < active_nr; i++) {
- struct cache_entry *ce, *new;
- ce = active_cache[i];
- if (ce_stage(ce)) {
- printf("%s: needs merge\n", ce->name);
- has_errors = 1;
- while ((i < active_nr) &&
- ! strcmp(active_cache[i]->name, ce->name))
- i++;
- i--;
- continue;
- }
-
- new = refresh_entry(ce);
- if (IS_ERR(new)) {
- if (not_new && PTR_ERR(new) == -ENOENT)
- continue;
- if (quiet)
- continue;
- printf("%s: needs update\n", ce->name);
- has_errors = 1;
- continue;
- }
- active_cache_changed = 1;
- /* You can NOT just free active_cache[i] here, since it
- * might not be necessarily malloc()ed but can also come
- * from mmap(). */
- active_cache[i] = new;
- }
- return has_errors;
-}
-
-/*
- * We fundamentally don't like some paths: we don't want
- * dot or dot-dot anywhere, and for obvious reasons don't
- * want to recurse into ".git" either.
- *
- * Also, we don't want double slashes or slashes at the
- * end that can make pathnames ambiguous.
- */
-static int verify_dotfile(const char *rest)
-{
- /*
- * The first character was '.', but that
- * has already been discarded, we now test
- * the rest.
- */
- switch (*rest) {
- /* "." is not allowed */
- case '\0': case '/':
- return 0;
-
- /*
- * ".git" followed by NUL or slash is bad. This
- * shares the path end test with the ".." case.
- */
- case 'g':
- if (rest[1] != 'i')
- break;
- if (rest[2] != 't')
- break;
- rest += 2;
- /* fallthrough */
- case '.':
- if (rest[1] == '\0' || rest[1] == '/')
- return 0;
- }
- return 1;
-}
-
-static int verify_path(char *path)
-{
- char c;
-
- goto inside;
- for (;;) {
- if (!c)
- return 1;
- if (c == '/') {
-inside:
- c = *path++;
- switch (c) {
- default:
- continue;
- case '/': case '\0':
- break;
- case '.':
- if (verify_dotfile(path))
- continue;
- }
- return 0;
- }
- c = *path++;
- }
-}
-
-static int add_cacheinfo(char *arg1, char *arg2, char *arg3)
-{
- int size, len, option;
- unsigned int mode;
- unsigned char sha1[20];
- struct cache_entry *ce;
-
- if (sscanf(arg1, "%o", &mode) != 1)
- return -1;
- if (get_sha1_hex(arg2, sha1))
- return -1;
- if (!verify_path(arg3))
- return -1;
-
- len = strlen(arg3);
- size = cache_entry_size(len);
- ce = xmalloc(size);
- memset(ce, 0, size);
-
- memcpy(ce->sha1, sha1, 20);
- memcpy(ce->name, arg3, len);
- ce->ce_flags = htons(len);
- ce->ce_mode = create_ce_mode(mode);
- option = allow_add ? ADD_CACHE_OK_TO_ADD : 0;
- option |= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0;
- return add_cache_entry(ce, option);
-}
-
-static struct cache_file cache_file;
-
-int main(int argc, char **argv)
-{
- int i, newfd, entries, has_errors = 0;
- int allow_options = 1;
-
- newfd = hold_index_file_for_update(&cache_file, get_index_file());
- if (newfd < 0)
- die("unable to create new cachefile");
-
- entries = read_cache();
- if (entries < 0)
- die("cache corrupted");
-
- for (i = 1 ; i < argc; i++) {
- char *path = argv[i];
-
- if (allow_options && *path == '-') {
- if (!strcmp(path, "--")) {
- allow_options = 0;
- continue;
- }
- if (!strcmp(path, "-q")) {
- quiet = 1;
- continue;
- }
- if (!strcmp(path, "--add")) {
- allow_add = 1;
- continue;
- }
- if (!strcmp(path, "--replace")) {
- allow_replace = 1;
- continue;
- }
- if (!strcmp(path, "--remove")) {
- allow_remove = 1;
- continue;
- }
- if (!strcmp(path, "--refresh")) {
- has_errors |= refresh_cache();
- continue;
- }
- if (!strcmp(path, "--cacheinfo")) {
- if (i+3 >= argc)
- die("git-update-cache: --cacheinfo <mode> <sha1> <path>");
- if (add_cacheinfo(argv[i+1], argv[i+2], argv[i+3]))
- die("git-update-cache: --cacheinfo cannot add %s", argv[i+3]);
- i += 3;
- continue;
- }
- if (!strcmp(path, "--info-only")) {
- info_only = 1;
- continue;
- }
- if (!strcmp(path, "--force-remove")) {
- force_remove = 1;
- continue;
- }
-
- if (!strcmp(path, "--ignore-missing")) {
- not_new = 1;
- continue;
- }
- die("unknown option %s", path);
- }
- if (!verify_path(path)) {
- fprintf(stderr, "Ignoring path %s\n", argv[i]);
- continue;
- }
- if (force_remove) {
- if (remove_file_from_cache(path))
- die("git-update-cache: --force-remove cannot remove %s", path);
- continue;
- }
- if (add_file_to_cache(path))
- die("Unable to add %s to database", path);
- }
- if (write_cache(newfd, active_cache, active_nr) ||
- commit_index_file(&cache_file))
- die("Unable to write new cachefile");
-
- return has_errors ? 1 : 0;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 07:46:39 +0000