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https://github.com/git/git
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3e09cdfd11
With "[core] filemode = false", you can tell git to ignore differences in the working tree file only in executable bit. * "git-update-index --refresh" does not say "needs update" if index entry and working tree file differs only in executable bit. * "git-update-index" on an existing path takes executable bit from the existing index entry, if the path and index entry are both regular files. * "git-diff-files" and "git-diff-index" without --cached flag pretend the path on the filesystem has the same executable bit as the existing index entry, if the path and index entry are both regular files. If you are on a filesystem with unreliable mode bits, you may need to force the executable bit after registering the path in the index. * "git-update-index --chmod=+x foo" flips the executable bit of the index file entry for path "foo" on. Use "--chmod=-x" to flip it off. Note that --chmod only works in index file and does not look at nor update the working tree. So if you are on a filesystem and do not have working executable bit, you would do: 1. set the appropriate .git/config option; 2. "git-update-index --add new-file.c" 3. "git-ls-files --stage new-file.c" to see if it has the desired mode bits. If not, e.g. to drop executable bit picked up from the filesystem, say "git-update-index --chmod=-x new-file.c". Signed-off-by: Junio C Hamano <junkio@cox.net>
128 lines
2.9 KiB
C
128 lines
2.9 KiB
C
/*
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* GIT - The information manager from hell
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*
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* Copyright (C) Linus Torvalds, 2005
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*/
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#include "cache.h"
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#include "diff.h"
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static const char diff_files_usage[] =
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"git-diff-files [-q] "
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"[<common diff options>] [<path>...]"
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COMMON_DIFF_OPTIONS_HELP;
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static struct diff_options diff_options;
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static int silent = 0;
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static void show_unmerge(const char *path)
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{
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diff_unmerge(&diff_options, path);
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}
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static void show_file(int pfx, struct cache_entry *ce)
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{
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diff_addremove(&diff_options, pfx, ntohl(ce->ce_mode),
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ce->sha1, ce->name, NULL);
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}
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static void show_modified(int oldmode, int mode,
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const unsigned char *old_sha1, const unsigned char *sha1,
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char *path)
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{
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diff_change(&diff_options, oldmode, mode, old_sha1, sha1, path, NULL);
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}
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int main(int argc, const char **argv)
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{
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const char **pathspec;
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const char *prefix = setup_git_directory();
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int entries, i;
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git_config(git_default_config);
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diff_setup(&diff_options);
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while (1 < argc && argv[1][0] == '-') {
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if (!strcmp(argv[1], "-q"))
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silent = 1;
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else if (!strcmp(argv[1], "-r"))
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; /* no-op */
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else if (!strcmp(argv[1], "-s"))
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; /* no-op */
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else {
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int diff_opt_cnt;
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diff_opt_cnt = diff_opt_parse(&diff_options,
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argv+1, argc-1);
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if (diff_opt_cnt < 0)
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usage(diff_files_usage);
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else if (diff_opt_cnt) {
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argv += diff_opt_cnt;
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argc -= diff_opt_cnt;
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continue;
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}
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else
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usage(diff_files_usage);
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}
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argv++; argc--;
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}
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/* Find the directory, and set up the pathspec */
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pathspec = get_pathspec(prefix, argv + 1);
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entries = read_cache();
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if (diff_setup_done(&diff_options) < 0)
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usage(diff_files_usage);
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/* At this point, if argc == 1, then we are doing everything.
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* Otherwise argv[1] .. argv[argc-1] have the explicit paths.
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*/
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if (entries < 0) {
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perror("read_cache");
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exit(1);
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}
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for (i = 0; i < entries; i++) {
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struct stat st;
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unsigned int oldmode, newmode;
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struct cache_entry *ce = active_cache[i];
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int changed;
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if (!ce_path_match(ce, pathspec))
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continue;
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if (ce_stage(ce)) {
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show_unmerge(ce->name);
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while (i < entries &&
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!strcmp(ce->name, active_cache[i]->name))
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i++;
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i--; /* compensate for loop control increments */
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continue;
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}
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if (lstat(ce->name, &st) < 0) {
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if (errno != ENOENT && errno != ENOTDIR) {
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perror(ce->name);
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continue;
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}
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if (silent)
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continue;
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show_file('-', ce);
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continue;
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}
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changed = ce_match_stat(ce, &st);
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if (!changed && !diff_options.find_copies_harder)
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continue;
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oldmode = ntohl(ce->ce_mode);
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newmode = DIFF_FILE_CANON_MODE(st.st_mode);
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if (!trust_executable_bit &&
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S_ISREG(newmode) && S_ISREG(oldmode) &&
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((newmode ^ oldmode) == 0111))
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newmode = oldmode;
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show_modified(oldmode, newmode,
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ce->sha1, (changed ? null_sha1 : ce->sha1),
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ce->name);
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}
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diffcore_std(&diff_options);
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diff_flush(&diff_options);
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return 0;
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}
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