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-rw-r--r--update-index.c624
1 files changed, 0 insertions, 624 deletions
diff --git a/update-index.c b/update-index.c
deleted file mode 100644
index 797245ab27..0000000000
--- a/update-index.c
+++ /dev/null
@@ -1,624 +0,0 @@
-/*
- * GIT - The information manager from hell
- *
- * Copyright (C) Linus Torvalds, 2005
- */
-#include "cache.h"
-#include "strbuf.h"
-#include "quote.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-index *" and suddenly having all the object
- * files be revision controlled.
- */
-static int allow_add;
-static int allow_remove;
-static int allow_replace;
-static int allow_unmerged; /* --refresh needing merge is not error */
-static int not_new; /* --refresh not having working tree files is not error */
-static int quiet; /* --refresh needing update is not error */
-static int info_only;
-static int force_remove;
-static int verbose;
-static int mark_valid_only = 0;
-#define MARK_VALID 1
-#define UNMARK_VALID 2
-
-
-/* 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 void report(const char *fmt, ...)
-{
- va_list vp;
-
- if (!verbose)
- return;
-
- va_start(vp, fmt);
- vprintf(fmt, vp);
- putchar('\n');
- va_end(vp);
-}
-
-static int mark_valid(const char *path)
-{
- int namelen = strlen(path);
- int pos = cache_name_pos(path, namelen);
- if (0 <= pos) {
- switch (mark_valid_only) {
- case MARK_VALID:
- active_cache[pos]->ce_flags |= htons(CE_VALID);
- break;
- case UNMARK_VALID:
- active_cache[pos]->ce_flags &= ~htons(CE_VALID);
- break;
- }
- active_cache_changed = 1;
- return 0;
- }
- return -1;
-}
-
-static int add_file_to_cache(const char *path)
-{
- int size, namelen, option, status;
- struct cache_entry *ce;
- struct stat st;
-
- 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-index --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) {
- if (remove_file_from_cache(path))
- return error("%s: cannot remove from the index",
- path);
- else
- return 0;
- } else if (status < 0) {
- return error("%s: does not exist and --remove not passed",
- path);
- }
- }
- if (0 == status)
- return error("%s: is a directory - add files inside instead",
- path);
- else
- return error("lstat(\"%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);
- ce->ce_flags = htons(namelen);
- fill_stat_cache_info(ce, &st);
-
- ce->ce_mode = create_ce_mode(st.st_mode);
- if (!trust_executable_bit) {
- /* If there is an existing entry, pick the mode bits
- * from it.
- */
- int pos = cache_name_pos(path, namelen);
- if (0 <= pos)
- ce->ce_mode = active_cache[pos]->ce_mode;
- }
-
- if (index_path(ce->sha1, path, &st, !info_only))
- return -1;
- option = allow_add ? ADD_CACHE_OK_TO_ADD : 0;
- option |= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0;
- if (add_cache_entry(ce, option))
- return error("%s: cannot add to the index - missing --add option?",
- path);
- return 0;
-}
-
-/*
- * "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, int really)
-{
- 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, really);
- if (!changed) {
- if (really && assume_unchanged &&
- !(ce->ce_flags & htons(CE_VALID)))
- ; /* mark this one VALID again */
- else
- return NULL;
- }
-
- if (ce_modified(ce, &st, really))
- return ERR_PTR(-EINVAL);
-
- size = ce_size(ce);
- updated = xmalloc(size);
- memcpy(updated, ce, size);
- fill_stat_cache_info(updated, &st);
-
- /* In this case, if really is not set, we should leave
- * CE_VALID bit alone. Otherwise, paths marked with
- * --no-assume-unchanged (i.e. things to be edited) will
- * reacquire CE_VALID bit automatically, which is not
- * really what we want.
- */
- if (!really && assume_unchanged && !(ce->ce_flags & htons(CE_VALID)))
- updated->ce_flags &= ~htons(CE_VALID);
-
- return updated;
-}
-
-static int refresh_cache(int really)
-{
- 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)) {
- while ((i < active_nr) &&
- ! strcmp(active_cache[i]->name, ce->name))
- i++;
- i--;
- if (allow_unmerged)
- continue;
- printf("%s: needs merge\n", ce->name);
- has_errors = 1;
- continue;
- }
-
- new = refresh_entry(ce, really);
- if (!new)
- continue;
- if (IS_ERR(new)) {
- if (not_new && PTR_ERR(new) == -ENOENT)
- continue;
- if (really && PTR_ERR(new) == -EINVAL) {
- /* If we are doing --really-refresh that
- * means the index is not valid anymore.
- */
- ce->ce_flags &= ~htons(CE_VALID);
- active_cache_changed = 1;
- }
- 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(const 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(unsigned int mode, const unsigned char *sha1,
- const char *path, int stage)
-{
- int size, len, option;
- struct cache_entry *ce;
-
- if (!verify_path(path))
- return -1;
-
- len = strlen(path);
- size = cache_entry_size(len);
- ce = xmalloc(size);
- memset(ce, 0, size);
-
- memcpy(ce->sha1, sha1, 20);
- memcpy(ce->name, path, len);
- ce->ce_flags = create_ce_flags(len, stage);
- ce->ce_mode = create_ce_mode(mode);
- if (assume_unchanged)
- ce->ce_flags |= htons(CE_VALID);
- option = allow_add ? ADD_CACHE_OK_TO_ADD : 0;
- option |= allow_replace ? ADD_CACHE_OK_TO_REPLACE : 0;
- if (add_cache_entry(ce, option))
- return error("%s: cannot add to the index - missing --add option?",
- path);
- report("add '%s'", path);
- return 0;
-}
-
-static int chmod_path(int flip, const char *path)
-{
- int pos;
- struct cache_entry *ce;
- unsigned int mode;
-
- pos = cache_name_pos(path, strlen(path));
- if (pos < 0)
- return -1;
- ce = active_cache[pos];
- mode = ntohl(ce->ce_mode);
- if (!S_ISREG(mode))
- return -1;
- switch (flip) {
- case '+':
- ce->ce_mode |= htonl(0111); break;
- case '-':
- ce->ce_mode &= htonl(~0111); break;
- default:
- return -1;
- }
- active_cache_changed = 1;
- return 0;
-}
-
-static struct cache_file cache_file;
-
-static void update_one(const char *path, const char *prefix, int prefix_length)
-{
- const char *p = prefix_path(prefix, prefix_length, path);
- if (!verify_path(p)) {
- fprintf(stderr, "Ignoring path %s\n", path);
- return;
- }
- if (mark_valid_only) {
- if (mark_valid(p))
- die("Unable to mark file %s", path);
- return;
- }
-
- if (force_remove) {
- if (remove_file_from_cache(p))
- die("git-update-index: unable to remove %s", path);
- report("remove '%s'", path);
- return;
- }
- if (add_file_to_cache(p))
- die("Unable to process file %s", path);
- report("add '%s'", path);
-}
-
-static void read_index_info(int line_termination)
-{
- struct strbuf buf;
- strbuf_init(&buf);
- while (1) {
- char *ptr, *tab;
- char *path_name;
- unsigned char sha1[20];
- unsigned int mode;
- int stage;
-
- /* This reads lines formatted in one of three formats:
- *
- * (1) mode SP sha1 TAB path
- * The first format is what "git-apply --index-info"
- * reports, and used to reconstruct a partial tree
- * that is used for phony merge base tree when falling
- * back on 3-way merge.
- *
- * (2) mode SP type SP sha1 TAB path
- * The second format is to stuff git-ls-tree output
- * into the index file.
- *
- * (3) mode SP sha1 SP stage TAB path
- * This format is to put higher order stages into the
- * index file and matches git-ls-files --stage output.
- */
- read_line(&buf, stdin, line_termination);
- if (buf.eof)
- break;
-
- mode = strtoul(buf.buf, &ptr, 8);
- if (ptr == buf.buf || *ptr != ' ')
- goto bad_line;
-
- tab = strchr(ptr, '\t');
- if (!tab || tab - ptr < 41)
- goto bad_line;
-
- if (tab[-2] == ' ' && '0' <= tab[-1] && tab[-1] <= '3') {
- stage = tab[-1] - '0';
- ptr = tab + 1; /* point at the head of path */
- tab = tab - 2; /* point at tail of sha1 */
- }
- else {
- stage = 0;
- ptr = tab + 1; /* point at the head of path */
- }
-
- if (get_sha1_hex(tab - 40, sha1) || tab[-41] != ' ')
- goto bad_line;
-
- if (line_termination && ptr[0] == '"')
- path_name = unquote_c_style(ptr, NULL);
- else
- path_name = ptr;
-
- if (!verify_path(path_name)) {
- fprintf(stderr, "Ignoring path %s\n", path_name);
- if (path_name != ptr)
- free(path_name);
- continue;
- }
-
- if (!mode) {
- /* mode == 0 means there is no such path -- remove */
- if (remove_file_from_cache(path_name))
- die("git-update-index: unable to remove %s",
- ptr);
- }
- else {
- /* mode ' ' sha1 '\t' name
- * ptr[-1] points at tab,
- * ptr[-41] is at the beginning of sha1
- */
- ptr[-42] = ptr[-1] = 0;
- if (add_cacheinfo(mode, sha1, path_name, stage))
- die("git-update-index: unable to update %s",
- path_name);
- }
- if (path_name != ptr)
- free(path_name);
- continue;
-
- bad_line:
- die("malformed index info %s", buf.buf);
- }
-}
-
-static const char update_index_usage[] =
-"git-update-index [-q] [--add] [--replace] [--remove] [--unmerged] [--refresh] [--cacheinfo] [--chmod=(+|-)x] [--info-only] [--force-remove] [--stdin] [--index-info] [--ignore-missing] [-z] [--verbose] [--] <file>...";
-
-int main(int argc, const char **argv)
-{
- int i, newfd, entries, has_errors = 0, line_termination = '\n';
- int allow_options = 1;
- int read_from_stdin = 0;
- const char *prefix = setup_git_directory();
- int prefix_length = prefix ? strlen(prefix) : 0;
-
- git_config(git_default_config);
-
- 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++) {
- const 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, "--unmerged")) {
- allow_unmerged = 1;
- continue;
- }
- if (!strcmp(path, "--refresh")) {
- has_errors |= refresh_cache(0);
- continue;
- }
- if (!strcmp(path, "--really-refresh")) {
- has_errors |= refresh_cache(1);
- continue;
- }
- if (!strcmp(path, "--cacheinfo")) {
- unsigned char sha1[20];
- unsigned int mode;
-
- if (i+3 >= argc)
- die("git-update-index: --cacheinfo <mode> <sha1> <path>");
-
- if ((sscanf(argv[i+1], "%o", &mode) != 1) ||
- get_sha1_hex(argv[i+2], sha1) ||
- add_cacheinfo(mode, sha1, argv[i+3], 0))
- die("git-update-index: --cacheinfo"
- " cannot add %s", argv[i+3]);
- i += 3;
- continue;
- }
- if (!strcmp(path, "--chmod=-x") ||
- !strcmp(path, "--chmod=+x")) {
- if (argc <= i+1)
- die("git-update-index: %s <path>", path);
- if (chmod_path(path[8], argv[++i]))
- die("git-update-index: %s cannot chmod %s", path, argv[i]);
- continue;
- }
- if (!strcmp(path, "--assume-unchanged")) {
- mark_valid_only = MARK_VALID;
- continue;
- }
- if (!strcmp(path, "--no-assume-unchanged")) {
- mark_valid_only = UNMARK_VALID;
- continue;
- }
- if (!strcmp(path, "--info-only")) {
- info_only = 1;
- continue;
- }
- if (!strcmp(path, "--force-remove")) {
- force_remove = 1;
- continue;
- }
- if (!strcmp(path, "-z")) {
- line_termination = 0;
- continue;
- }
- if (!strcmp(path, "--stdin")) {
- if (i != argc - 1)
- die("--stdin must be at the end");
- read_from_stdin = 1;
- break;
- }
- if (!strcmp(path, "--index-info")) {
- if (i != argc - 1)
- die("--index-info must be at the end");
- allow_add = allow_replace = allow_remove = 1;
- read_index_info(line_termination);
- break;
- }
- if (!strcmp(path, "--ignore-missing")) {
- not_new = 1;
- continue;
- }
- if (!strcmp(path, "--verbose")) {
- verbose = 1;
- continue;
- }
- if (!strcmp(path, "-h") || !strcmp(path, "--help"))
- usage(update_index_usage);
- die("unknown option %s", path);
- }
- update_one(path, prefix, prefix_length);
- }
- if (read_from_stdin) {
- struct strbuf buf;
- strbuf_init(&buf);
- while (1) {
- char *path_name;
- read_line(&buf, stdin, line_termination);
- if (buf.eof)
- break;
- if (line_termination && buf.buf[0] == '"')
- path_name = unquote_c_style(buf.buf, NULL);
- else
- path_name = buf.buf;
- update_one(path_name, prefix, prefix_length);
- if (path_name != buf.buf)
- free(path_name);
- }
- }
- if (active_cache_changed) {
- if (write_cache(newfd, active_cache, active_nr) ||
- commit_index_file(&cache_file))
- die("Unable to write new cachefile");
- }
-
- return has_errors ? 1 : 0;
-}
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