090dbea684
* nd/trace-index-ops: trace: measure where the time is spent in the index-heavy operations
3035 lines
79 KiB
C
3035 lines
79 KiB
C
/*
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* This handles recursive filename detection with exclude
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* files, index knowledge etc..
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*
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* See Documentation/technical/api-directory-listing.txt
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*
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* Copyright (C) Linus Torvalds, 2005-2006
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* Junio Hamano, 2005-2006
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*/
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#define NO_THE_INDEX_COMPATIBILITY_MACROS
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#include "cache.h"
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#include "config.h"
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#include "dir.h"
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#include "attr.h"
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#include "refs.h"
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#include "wildmatch.h"
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#include "pathspec.h"
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#include "utf8.h"
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#include "varint.h"
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#include "ewah/ewok.h"
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#include "fsmonitor.h"
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/*
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* Tells read_directory_recursive how a file or directory should be treated.
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* Values are ordered by significance, e.g. if a directory contains both
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* excluded and untracked files, it is listed as untracked because
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* path_untracked > path_excluded.
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*/
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enum path_treatment {
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path_none = 0,
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path_recurse,
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path_excluded,
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path_untracked
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};
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/*
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* Support data structure for our opendir/readdir/closedir wrappers
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*/
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struct cached_dir {
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DIR *fdir;
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struct untracked_cache_dir *untracked;
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int nr_files;
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int nr_dirs;
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struct dirent *de;
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const char *file;
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struct untracked_cache_dir *ucd;
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};
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static enum path_treatment read_directory_recursive(struct dir_struct *dir,
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struct index_state *istate, const char *path, int len,
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struct untracked_cache_dir *untracked,
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int check_only, int stop_at_first_file, const struct pathspec *pathspec);
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static int get_dtype(struct dirent *de, struct index_state *istate,
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const char *path, int len);
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int count_slashes(const char *s)
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{
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int cnt = 0;
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while (*s)
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if (*s++ == '/')
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cnt++;
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return cnt;
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}
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int fspathcmp(const char *a, const char *b)
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{
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return ignore_case ? strcasecmp(a, b) : strcmp(a, b);
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}
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int fspathncmp(const char *a, const char *b, size_t count)
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{
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return ignore_case ? strncasecmp(a, b, count) : strncmp(a, b, count);
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}
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int git_fnmatch(const struct pathspec_item *item,
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const char *pattern, const char *string,
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int prefix)
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{
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if (prefix > 0) {
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if (ps_strncmp(item, pattern, string, prefix))
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return WM_NOMATCH;
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pattern += prefix;
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string += prefix;
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}
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if (item->flags & PATHSPEC_ONESTAR) {
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int pattern_len = strlen(++pattern);
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int string_len = strlen(string);
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return string_len < pattern_len ||
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ps_strcmp(item, pattern,
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string + string_len - pattern_len);
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}
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if (item->magic & PATHSPEC_GLOB)
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return wildmatch(pattern, string,
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WM_PATHNAME |
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(item->magic & PATHSPEC_ICASE ? WM_CASEFOLD : 0));
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else
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/* wildmatch has not learned no FNM_PATHNAME mode yet */
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return wildmatch(pattern, string,
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item->magic & PATHSPEC_ICASE ? WM_CASEFOLD : 0);
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}
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static int fnmatch_icase_mem(const char *pattern, int patternlen,
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const char *string, int stringlen,
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int flags)
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{
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int match_status;
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struct strbuf pat_buf = STRBUF_INIT;
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struct strbuf str_buf = STRBUF_INIT;
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const char *use_pat = pattern;
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const char *use_str = string;
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if (pattern[patternlen]) {
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strbuf_add(&pat_buf, pattern, patternlen);
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use_pat = pat_buf.buf;
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}
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if (string[stringlen]) {
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strbuf_add(&str_buf, string, stringlen);
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use_str = str_buf.buf;
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}
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if (ignore_case)
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flags |= WM_CASEFOLD;
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match_status = wildmatch(use_pat, use_str, flags);
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strbuf_release(&pat_buf);
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strbuf_release(&str_buf);
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return match_status;
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}
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static size_t common_prefix_len(const struct pathspec *pathspec)
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{
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int n;
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size_t max = 0;
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/*
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* ":(icase)path" is treated as a pathspec full of
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* wildcard. In other words, only prefix is considered common
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* prefix. If the pathspec is abc/foo abc/bar, running in
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* subdir xyz, the common prefix is still xyz, not xuz/abc as
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* in non-:(icase).
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*/
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GUARD_PATHSPEC(pathspec,
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PATHSPEC_FROMTOP |
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PATHSPEC_MAXDEPTH |
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PATHSPEC_LITERAL |
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PATHSPEC_GLOB |
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PATHSPEC_ICASE |
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PATHSPEC_EXCLUDE |
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PATHSPEC_ATTR);
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for (n = 0; n < pathspec->nr; n++) {
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size_t i = 0, len = 0, item_len;
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if (pathspec->items[n].magic & PATHSPEC_EXCLUDE)
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continue;
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if (pathspec->items[n].magic & PATHSPEC_ICASE)
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item_len = pathspec->items[n].prefix;
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else
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item_len = pathspec->items[n].nowildcard_len;
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while (i < item_len && (n == 0 || i < max)) {
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char c = pathspec->items[n].match[i];
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if (c != pathspec->items[0].match[i])
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break;
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if (c == '/')
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len = i + 1;
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i++;
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}
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if (n == 0 || len < max) {
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max = len;
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if (!max)
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break;
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}
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}
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return max;
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}
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/*
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* Returns a copy of the longest leading path common among all
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* pathspecs.
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*/
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char *common_prefix(const struct pathspec *pathspec)
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{
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unsigned long len = common_prefix_len(pathspec);
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return len ? xmemdupz(pathspec->items[0].match, len) : NULL;
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}
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int fill_directory(struct dir_struct *dir,
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struct index_state *istate,
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const struct pathspec *pathspec)
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{
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const char *prefix;
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size_t prefix_len;
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/*
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* Calculate common prefix for the pathspec, and
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* use that to optimize the directory walk
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*/
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prefix_len = common_prefix_len(pathspec);
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prefix = prefix_len ? pathspec->items[0].match : "";
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/* Read the directory and prune it */
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read_directory(dir, istate, prefix, prefix_len, pathspec);
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return prefix_len;
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}
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int within_depth(const char *name, int namelen,
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int depth, int max_depth)
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{
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const char *cp = name, *cpe = name + namelen;
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while (cp < cpe) {
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if (*cp++ != '/')
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continue;
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depth++;
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if (depth > max_depth)
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return 0;
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}
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return 1;
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}
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/*
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* Read the contents of the blob with the given OID into a buffer.
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* Append a trailing LF to the end if the last line doesn't have one.
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*
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* Returns:
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* -1 when the OID is invalid or unknown or does not refer to a blob.
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* 0 when the blob is empty.
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* 1 along with { data, size } of the (possibly augmented) buffer
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* when successful.
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*
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* Optionally updates the given oid_stat with the given OID (when valid).
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*/
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static int do_read_blob(const struct object_id *oid, struct oid_stat *oid_stat,
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size_t *size_out, char **data_out)
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{
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enum object_type type;
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unsigned long sz;
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char *data;
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*size_out = 0;
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*data_out = NULL;
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data = read_sha1_file(oid->hash, &type, &sz);
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if (!data || type != OBJ_BLOB) {
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free(data);
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return -1;
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}
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if (oid_stat) {
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memset(&oid_stat->stat, 0, sizeof(oid_stat->stat));
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oidcpy(&oid_stat->oid, oid);
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}
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if (sz == 0) {
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free(data);
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return 0;
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}
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if (data[sz - 1] != '\n') {
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data = xrealloc(data, st_add(sz, 1));
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data[sz++] = '\n';
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}
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*size_out = xsize_t(sz);
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*data_out = data;
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return 1;
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}
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#define DO_MATCH_EXCLUDE (1<<0)
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#define DO_MATCH_DIRECTORY (1<<1)
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#define DO_MATCH_SUBMODULE (1<<2)
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static int match_attrs(const char *name, int namelen,
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const struct pathspec_item *item)
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{
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int i;
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git_check_attr(name, item->attr_check);
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for (i = 0; i < item->attr_match_nr; i++) {
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const char *value;
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int matched;
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enum attr_match_mode match_mode;
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value = item->attr_check->items[i].value;
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match_mode = item->attr_match[i].match_mode;
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if (ATTR_TRUE(value))
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matched = (match_mode == MATCH_SET);
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else if (ATTR_FALSE(value))
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matched = (match_mode == MATCH_UNSET);
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else if (ATTR_UNSET(value))
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matched = (match_mode == MATCH_UNSPECIFIED);
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else
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matched = (match_mode == MATCH_VALUE &&
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!strcmp(item->attr_match[i].value, value));
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if (!matched)
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return 0;
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}
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return 1;
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}
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/*
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* Does 'match' match the given name?
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* A match is found if
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*
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* (1) the 'match' string is leading directory of 'name', or
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* (2) the 'match' string is a wildcard and matches 'name', or
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* (3) the 'match' string is exactly the same as 'name'.
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*
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* and the return value tells which case it was.
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*
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* It returns 0 when there is no match.
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*/
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static int match_pathspec_item(const struct pathspec_item *item, int prefix,
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const char *name, int namelen, unsigned flags)
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{
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/* name/namelen has prefix cut off by caller */
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const char *match = item->match + prefix;
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int matchlen = item->len - prefix;
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/*
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* The normal call pattern is:
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* 1. prefix = common_prefix_len(ps);
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* 2. prune something, or fill_directory
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* 3. match_pathspec()
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*
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* 'prefix' at #1 may be shorter than the command's prefix and
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* it's ok for #2 to match extra files. Those extras will be
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* trimmed at #3.
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*
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* Suppose the pathspec is 'foo' and '../bar' running from
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* subdir 'xyz'. The common prefix at #1 will be empty, thanks
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* to "../". We may have xyz/foo _and_ XYZ/foo after #2. The
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* user does not want XYZ/foo, only the "foo" part should be
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* case-insensitive. We need to filter out XYZ/foo here. In
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* other words, we do not trust the caller on comparing the
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* prefix part when :(icase) is involved. We do exact
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* comparison ourselves.
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*
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* Normally the caller (common_prefix_len() in fact) does
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* _exact_ matching on name[-prefix+1..-1] and we do not need
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* to check that part. Be defensive and check it anyway, in
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* case common_prefix_len is changed, or a new caller is
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* introduced that does not use common_prefix_len.
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*
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* If the penalty turns out too high when prefix is really
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* long, maybe change it to
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* strncmp(match, name, item->prefix - prefix)
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*/
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if (item->prefix && (item->magic & PATHSPEC_ICASE) &&
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strncmp(item->match, name - prefix, item->prefix))
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return 0;
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if (item->attr_match_nr && !match_attrs(name, namelen, item))
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return 0;
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/* If the match was just the prefix, we matched */
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if (!*match)
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return MATCHED_RECURSIVELY;
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if (matchlen <= namelen && !ps_strncmp(item, match, name, matchlen)) {
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if (matchlen == namelen)
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return MATCHED_EXACTLY;
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if (match[matchlen-1] == '/' || name[matchlen] == '/')
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return MATCHED_RECURSIVELY;
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} else if ((flags & DO_MATCH_DIRECTORY) &&
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match[matchlen - 1] == '/' &&
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namelen == matchlen - 1 &&
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!ps_strncmp(item, match, name, namelen))
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return MATCHED_EXACTLY;
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if (item->nowildcard_len < item->len &&
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!git_fnmatch(item, match, name,
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item->nowildcard_len - prefix))
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return MATCHED_FNMATCH;
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/* Perform checks to see if "name" is a super set of the pathspec */
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if (flags & DO_MATCH_SUBMODULE) {
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/* name is a literal prefix of the pathspec */
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if ((namelen < matchlen) &&
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(match[namelen] == '/') &&
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!ps_strncmp(item, match, name, namelen))
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return MATCHED_RECURSIVELY;
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/* name" doesn't match up to the first wild character */
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if (item->nowildcard_len < item->len &&
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ps_strncmp(item, match, name,
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item->nowildcard_len - prefix))
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return 0;
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/*
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* Here is where we would perform a wildmatch to check if
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* "name" can be matched as a directory (or a prefix) against
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* the pathspec. Since wildmatch doesn't have this capability
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* at the present we have to punt and say that it is a match,
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* potentially returning a false positive
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* The submodules themselves will be able to perform more
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* accurate matching to determine if the pathspec matches.
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*/
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return MATCHED_RECURSIVELY;
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}
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return 0;
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}
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/*
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* Given a name and a list of pathspecs, returns the nature of the
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* closest (i.e. most specific) match of the name to any of the
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* pathspecs.
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*
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* The caller typically calls this multiple times with the same
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* pathspec and seen[] array but with different name/namelen
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* (e.g. entries from the index) and is interested in seeing if and
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* how each pathspec matches all the names it calls this function
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* with. A mark is left in the seen[] array for each pathspec element
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* indicating the closest type of match that element achieved, so if
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* seen[n] remains zero after multiple invocations, that means the nth
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* pathspec did not match any names, which could indicate that the
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* user mistyped the nth pathspec.
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*/
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static int do_match_pathspec(const struct pathspec *ps,
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const char *name, int namelen,
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int prefix, char *seen,
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unsigned flags)
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{
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int i, retval = 0, exclude = flags & DO_MATCH_EXCLUDE;
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GUARD_PATHSPEC(ps,
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PATHSPEC_FROMTOP |
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PATHSPEC_MAXDEPTH |
|
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PATHSPEC_LITERAL |
|
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PATHSPEC_GLOB |
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PATHSPEC_ICASE |
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PATHSPEC_EXCLUDE |
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PATHSPEC_ATTR);
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if (!ps->nr) {
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if (!ps->recursive ||
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!(ps->magic & PATHSPEC_MAXDEPTH) ||
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ps->max_depth == -1)
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return MATCHED_RECURSIVELY;
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|
|
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if (within_depth(name, namelen, 0, ps->max_depth))
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return MATCHED_EXACTLY;
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else
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return 0;
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}
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|
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name += prefix;
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namelen -= prefix;
|
|
|
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for (i = ps->nr - 1; i >= 0; i--) {
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int how;
|
|
|
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if ((!exclude && ps->items[i].magic & PATHSPEC_EXCLUDE) ||
|
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( exclude && !(ps->items[i].magic & PATHSPEC_EXCLUDE)))
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continue;
|
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|
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if (seen && seen[i] == MATCHED_EXACTLY)
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continue;
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/*
|
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* Make exclude patterns optional and never report
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|
* "pathspec ':(exclude)foo' matches no files"
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*/
|
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if (seen && ps->items[i].magic & PATHSPEC_EXCLUDE)
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seen[i] = MATCHED_FNMATCH;
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how = match_pathspec_item(ps->items+i, prefix, name,
|
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namelen, flags);
|
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if (ps->recursive &&
|
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(ps->magic & PATHSPEC_MAXDEPTH) &&
|
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ps->max_depth != -1 &&
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how && how != MATCHED_FNMATCH) {
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int len = ps->items[i].len;
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if (name[len] == '/')
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len++;
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if (within_depth(name+len, namelen-len, 0, ps->max_depth))
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how = MATCHED_EXACTLY;
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else
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how = 0;
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}
|
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if (how) {
|
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if (retval < how)
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retval = how;
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if (seen && seen[i] < how)
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seen[i] = how;
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}
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}
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return retval;
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}
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|
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int match_pathspec(const struct pathspec *ps,
|
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const char *name, int namelen,
|
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int prefix, char *seen, int is_dir)
|
|
{
|
|
int positive, negative;
|
|
unsigned flags = is_dir ? DO_MATCH_DIRECTORY : 0;
|
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positive = do_match_pathspec(ps, name, namelen,
|
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prefix, seen, flags);
|
|
if (!(ps->magic & PATHSPEC_EXCLUDE) || !positive)
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return positive;
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negative = do_match_pathspec(ps, name, namelen,
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prefix, seen,
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flags | DO_MATCH_EXCLUDE);
|
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return negative ? 0 : positive;
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|
}
|
|
|
|
/**
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|
* Check if a submodule is a superset of the pathspec
|
|
*/
|
|
int submodule_path_match(const struct pathspec *ps,
|
|
const char *submodule_name,
|
|
char *seen)
|
|
{
|
|
int matched = do_match_pathspec(ps, submodule_name,
|
|
strlen(submodule_name),
|
|
0, seen,
|
|
DO_MATCH_DIRECTORY |
|
|
DO_MATCH_SUBMODULE);
|
|
return matched;
|
|
}
|
|
|
|
int report_path_error(const char *ps_matched,
|
|
const struct pathspec *pathspec,
|
|
const char *prefix)
|
|
{
|
|
/*
|
|
* Make sure all pathspec matched; otherwise it is an error.
|
|
*/
|
|
int num, errors = 0;
|
|
for (num = 0; num < pathspec->nr; num++) {
|
|
int other, found_dup;
|
|
|
|
if (ps_matched[num])
|
|
continue;
|
|
/*
|
|
* The caller might have fed identical pathspec
|
|
* twice. Do not barf on such a mistake.
|
|
* FIXME: parse_pathspec should have eliminated
|
|
* duplicate pathspec.
|
|
*/
|
|
for (found_dup = other = 0;
|
|
!found_dup && other < pathspec->nr;
|
|
other++) {
|
|
if (other == num || !ps_matched[other])
|
|
continue;
|
|
if (!strcmp(pathspec->items[other].original,
|
|
pathspec->items[num].original))
|
|
/*
|
|
* Ok, we have a match already.
|
|
*/
|
|
found_dup = 1;
|
|
}
|
|
if (found_dup)
|
|
continue;
|
|
|
|
error("pathspec '%s' did not match any file(s) known to git.",
|
|
pathspec->items[num].original);
|
|
errors++;
|
|
}
|
|
return errors;
|
|
}
|
|
|
|
/*
|
|
* Return the length of the "simple" part of a path match limiter.
|
|
*/
|
|
int simple_length(const char *match)
|
|
{
|
|
int len = -1;
|
|
|
|
for (;;) {
|
|
unsigned char c = *match++;
|
|
len++;
|
|
if (c == '\0' || is_glob_special(c))
|
|
return len;
|
|
}
|
|
}
|
|
|
|
int no_wildcard(const char *string)
|
|
{
|
|
return string[simple_length(string)] == '\0';
|
|
}
|
|
|
|
void parse_exclude_pattern(const char **pattern,
|
|
int *patternlen,
|
|
unsigned *flags,
|
|
int *nowildcardlen)
|
|
{
|
|
const char *p = *pattern;
|
|
size_t i, len;
|
|
|
|
*flags = 0;
|
|
if (*p == '!') {
|
|
*flags |= EXC_FLAG_NEGATIVE;
|
|
p++;
|
|
}
|
|
len = strlen(p);
|
|
if (len && p[len - 1] == '/') {
|
|
len--;
|
|
*flags |= EXC_FLAG_MUSTBEDIR;
|
|
}
|
|
for (i = 0; i < len; i++) {
|
|
if (p[i] == '/')
|
|
break;
|
|
}
|
|
if (i == len)
|
|
*flags |= EXC_FLAG_NODIR;
|
|
*nowildcardlen = simple_length(p);
|
|
/*
|
|
* we should have excluded the trailing slash from 'p' too,
|
|
* but that's one more allocation. Instead just make sure
|
|
* nowildcardlen does not exceed real patternlen
|
|
*/
|
|
if (*nowildcardlen > len)
|
|
*nowildcardlen = len;
|
|
if (*p == '*' && no_wildcard(p + 1))
|
|
*flags |= EXC_FLAG_ENDSWITH;
|
|
*pattern = p;
|
|
*patternlen = len;
|
|
}
|
|
|
|
void add_exclude(const char *string, const char *base,
|
|
int baselen, struct exclude_list *el, int srcpos)
|
|
{
|
|
struct exclude *x;
|
|
int patternlen;
|
|
unsigned flags;
|
|
int nowildcardlen;
|
|
|
|
parse_exclude_pattern(&string, &patternlen, &flags, &nowildcardlen);
|
|
if (flags & EXC_FLAG_MUSTBEDIR) {
|
|
FLEXPTR_ALLOC_MEM(x, pattern, string, patternlen);
|
|
} else {
|
|
x = xmalloc(sizeof(*x));
|
|
x->pattern = string;
|
|
}
|
|
x->patternlen = patternlen;
|
|
x->nowildcardlen = nowildcardlen;
|
|
x->base = base;
|
|
x->baselen = baselen;
|
|
x->flags = flags;
|
|
x->srcpos = srcpos;
|
|
ALLOC_GROW(el->excludes, el->nr + 1, el->alloc);
|
|
el->excludes[el->nr++] = x;
|
|
x->el = el;
|
|
}
|
|
|
|
static int read_skip_worktree_file_from_index(const struct index_state *istate,
|
|
const char *path,
|
|
size_t *size_out, char **data_out,
|
|
struct oid_stat *oid_stat)
|
|
{
|
|
int pos, len;
|
|
|
|
len = strlen(path);
|
|
pos = index_name_pos(istate, path, len);
|
|
if (pos < 0)
|
|
return -1;
|
|
if (!ce_skip_worktree(istate->cache[pos]))
|
|
return -1;
|
|
|
|
return do_read_blob(&istate->cache[pos]->oid, oid_stat, size_out, data_out);
|
|
}
|
|
|
|
/*
|
|
* Frees memory within el which was allocated for exclude patterns and
|
|
* the file buffer. Does not free el itself.
|
|
*/
|
|
void clear_exclude_list(struct exclude_list *el)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < el->nr; i++)
|
|
free(el->excludes[i]);
|
|
free(el->excludes);
|
|
free(el->filebuf);
|
|
|
|
memset(el, 0, sizeof(*el));
|
|
}
|
|
|
|
static void trim_trailing_spaces(char *buf)
|
|
{
|
|
char *p, *last_space = NULL;
|
|
|
|
for (p = buf; *p; p++)
|
|
switch (*p) {
|
|
case ' ':
|
|
if (!last_space)
|
|
last_space = p;
|
|
break;
|
|
case '\\':
|
|
p++;
|
|
if (!*p)
|
|
return;
|
|
/* fallthrough */
|
|
default:
|
|
last_space = NULL;
|
|
}
|
|
|
|
if (last_space)
|
|
*last_space = '\0';
|
|
}
|
|
|
|
/*
|
|
* Given a subdirectory name and "dir" of the current directory,
|
|
* search the subdir in "dir" and return it, or create a new one if it
|
|
* does not exist in "dir".
|
|
*
|
|
* If "name" has the trailing slash, it'll be excluded in the search.
|
|
*/
|
|
static struct untracked_cache_dir *lookup_untracked(struct untracked_cache *uc,
|
|
struct untracked_cache_dir *dir,
|
|
const char *name, int len)
|
|
{
|
|
int first, last;
|
|
struct untracked_cache_dir *d;
|
|
if (!dir)
|
|
return NULL;
|
|
if (len && name[len - 1] == '/')
|
|
len--;
|
|
first = 0;
|
|
last = dir->dirs_nr;
|
|
while (last > first) {
|
|
int cmp, next = (last + first) >> 1;
|
|
d = dir->dirs[next];
|
|
cmp = strncmp(name, d->name, len);
|
|
if (!cmp && strlen(d->name) > len)
|
|
cmp = -1;
|
|
if (!cmp)
|
|
return d;
|
|
if (cmp < 0) {
|
|
last = next;
|
|
continue;
|
|
}
|
|
first = next+1;
|
|
}
|
|
|
|
uc->dir_created++;
|
|
FLEX_ALLOC_MEM(d, name, name, len);
|
|
|
|
ALLOC_GROW(dir->dirs, dir->dirs_nr + 1, dir->dirs_alloc);
|
|
MOVE_ARRAY(dir->dirs + first + 1, dir->dirs + first,
|
|
dir->dirs_nr - first);
|
|
dir->dirs_nr++;
|
|
dir->dirs[first] = d;
|
|
return d;
|
|
}
|
|
|
|
static void do_invalidate_gitignore(struct untracked_cache_dir *dir)
|
|
{
|
|
int i;
|
|
dir->valid = 0;
|
|
dir->untracked_nr = 0;
|
|
for (i = 0; i < dir->dirs_nr; i++)
|
|
do_invalidate_gitignore(dir->dirs[i]);
|
|
}
|
|
|
|
static void invalidate_gitignore(struct untracked_cache *uc,
|
|
struct untracked_cache_dir *dir)
|
|
{
|
|
uc->gitignore_invalidated++;
|
|
do_invalidate_gitignore(dir);
|
|
}
|
|
|
|
static void invalidate_directory(struct untracked_cache *uc,
|
|
struct untracked_cache_dir *dir)
|
|
{
|
|
int i;
|
|
uc->dir_invalidated++;
|
|
dir->valid = 0;
|
|
dir->untracked_nr = 0;
|
|
for (i = 0; i < dir->dirs_nr; i++)
|
|
dir->dirs[i]->recurse = 0;
|
|
}
|
|
|
|
static int add_excludes_from_buffer(char *buf, size_t size,
|
|
const char *base, int baselen,
|
|
struct exclude_list *el);
|
|
|
|
/*
|
|
* Given a file with name "fname", read it (either from disk, or from
|
|
* an index if 'istate' is non-null), parse it and store the
|
|
* exclude rules in "el".
|
|
*
|
|
* If "ss" is not NULL, compute SHA-1 of the exclude file and fill
|
|
* stat data from disk (only valid if add_excludes returns zero). If
|
|
* ss_valid is non-zero, "ss" must contain good value as input.
|
|
*/
|
|
static int add_excludes(const char *fname, const char *base, int baselen,
|
|
struct exclude_list *el, struct index_state *istate,
|
|
struct oid_stat *oid_stat)
|
|
{
|
|
struct stat st;
|
|
int r;
|
|
int fd;
|
|
size_t size = 0;
|
|
char *buf;
|
|
|
|
fd = open(fname, O_RDONLY);
|
|
if (fd < 0 || fstat(fd, &st) < 0) {
|
|
if (fd < 0)
|
|
warn_on_fopen_errors(fname);
|
|
else
|
|
close(fd);
|
|
if (!istate)
|
|
return -1;
|
|
r = read_skip_worktree_file_from_index(istate, fname,
|
|
&size, &buf,
|
|
oid_stat);
|
|
if (r != 1)
|
|
return r;
|
|
} else {
|
|
size = xsize_t(st.st_size);
|
|
if (size == 0) {
|
|
if (oid_stat) {
|
|
fill_stat_data(&oid_stat->stat, &st);
|
|
oidcpy(&oid_stat->oid, &empty_blob_oid);
|
|
oid_stat->valid = 1;
|
|
}
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
buf = xmallocz(size);
|
|
if (read_in_full(fd, buf, size) != size) {
|
|
free(buf);
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
buf[size++] = '\n';
|
|
close(fd);
|
|
if (oid_stat) {
|
|
int pos;
|
|
if (oid_stat->valid &&
|
|
!match_stat_data_racy(istate, &oid_stat->stat, &st))
|
|
; /* no content change, ss->sha1 still good */
|
|
else if (istate &&
|
|
(pos = index_name_pos(istate, fname, strlen(fname))) >= 0 &&
|
|
!ce_stage(istate->cache[pos]) &&
|
|
ce_uptodate(istate->cache[pos]) &&
|
|
!would_convert_to_git(istate, fname))
|
|
oidcpy(&oid_stat->oid,
|
|
&istate->cache[pos]->oid);
|
|
else
|
|
hash_object_file(buf, size, "blob",
|
|
&oid_stat->oid);
|
|
fill_stat_data(&oid_stat->stat, &st);
|
|
oid_stat->valid = 1;
|
|
}
|
|
}
|
|
|
|
add_excludes_from_buffer(buf, size, base, baselen, el);
|
|
return 0;
|
|
}
|
|
|
|
static int add_excludes_from_buffer(char *buf, size_t size,
|
|
const char *base, int baselen,
|
|
struct exclude_list *el)
|
|
{
|
|
int i, lineno = 1;
|
|
char *entry;
|
|
|
|
el->filebuf = buf;
|
|
|
|
if (skip_utf8_bom(&buf, size))
|
|
size -= buf - el->filebuf;
|
|
|
|
entry = buf;
|
|
|
|
for (i = 0; i < size; i++) {
|
|
if (buf[i] == '\n') {
|
|
if (entry != buf + i && entry[0] != '#') {
|
|
buf[i - (i && buf[i-1] == '\r')] = 0;
|
|
trim_trailing_spaces(entry);
|
|
add_exclude(entry, base, baselen, el, lineno);
|
|
}
|
|
lineno++;
|
|
entry = buf + i + 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int add_excludes_from_file_to_list(const char *fname, const char *base,
|
|
int baselen, struct exclude_list *el,
|
|
struct index_state *istate)
|
|
{
|
|
return add_excludes(fname, base, baselen, el, istate, NULL);
|
|
}
|
|
|
|
int add_excludes_from_blob_to_list(
|
|
struct object_id *oid,
|
|
const char *base, int baselen,
|
|
struct exclude_list *el)
|
|
{
|
|
char *buf;
|
|
size_t size;
|
|
int r;
|
|
|
|
r = do_read_blob(oid, NULL, &size, &buf);
|
|
if (r != 1)
|
|
return r;
|
|
|
|
add_excludes_from_buffer(buf, size, base, baselen, el);
|
|
return 0;
|
|
}
|
|
|
|
struct exclude_list *add_exclude_list(struct dir_struct *dir,
|
|
int group_type, const char *src)
|
|
{
|
|
struct exclude_list *el;
|
|
struct exclude_list_group *group;
|
|
|
|
group = &dir->exclude_list_group[group_type];
|
|
ALLOC_GROW(group->el, group->nr + 1, group->alloc);
|
|
el = &group->el[group->nr++];
|
|
memset(el, 0, sizeof(*el));
|
|
el->src = src;
|
|
return el;
|
|
}
|
|
|
|
/*
|
|
* Used to set up core.excludesfile and .git/info/exclude lists.
|
|
*/
|
|
static void add_excludes_from_file_1(struct dir_struct *dir, const char *fname,
|
|
struct oid_stat *oid_stat)
|
|
{
|
|
struct exclude_list *el;
|
|
/*
|
|
* catch setup_standard_excludes() that's called before
|
|
* dir->untracked is assigned. That function behaves
|
|
* differently when dir->untracked is non-NULL.
|
|
*/
|
|
if (!dir->untracked)
|
|
dir->unmanaged_exclude_files++;
|
|
el = add_exclude_list(dir, EXC_FILE, fname);
|
|
if (add_excludes(fname, "", 0, el, NULL, oid_stat) < 0)
|
|
die("cannot use %s as an exclude file", fname);
|
|
}
|
|
|
|
void add_excludes_from_file(struct dir_struct *dir, const char *fname)
|
|
{
|
|
dir->unmanaged_exclude_files++; /* see validate_untracked_cache() */
|
|
add_excludes_from_file_1(dir, fname, NULL);
|
|
}
|
|
|
|
int match_basename(const char *basename, int basenamelen,
|
|
const char *pattern, int prefix, int patternlen,
|
|
unsigned flags)
|
|
{
|
|
if (prefix == patternlen) {
|
|
if (patternlen == basenamelen &&
|
|
!fspathncmp(pattern, basename, basenamelen))
|
|
return 1;
|
|
} else if (flags & EXC_FLAG_ENDSWITH) {
|
|
/* "*literal" matching against "fooliteral" */
|
|
if (patternlen - 1 <= basenamelen &&
|
|
!fspathncmp(pattern + 1,
|
|
basename + basenamelen - (patternlen - 1),
|
|
patternlen - 1))
|
|
return 1;
|
|
} else {
|
|
if (fnmatch_icase_mem(pattern, patternlen,
|
|
basename, basenamelen,
|
|
0) == 0)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int match_pathname(const char *pathname, int pathlen,
|
|
const char *base, int baselen,
|
|
const char *pattern, int prefix, int patternlen,
|
|
unsigned flags)
|
|
{
|
|
const char *name;
|
|
int namelen;
|
|
|
|
/*
|
|
* match with FNM_PATHNAME; the pattern has base implicitly
|
|
* in front of it.
|
|
*/
|
|
if (*pattern == '/') {
|
|
pattern++;
|
|
patternlen--;
|
|
prefix--;
|
|
}
|
|
|
|
/*
|
|
* baselen does not count the trailing slash. base[] may or
|
|
* may not end with a trailing slash though.
|
|
*/
|
|
if (pathlen < baselen + 1 ||
|
|
(baselen && pathname[baselen] != '/') ||
|
|
fspathncmp(pathname, base, baselen))
|
|
return 0;
|
|
|
|
namelen = baselen ? pathlen - baselen - 1 : pathlen;
|
|
name = pathname + pathlen - namelen;
|
|
|
|
if (prefix) {
|
|
/*
|
|
* if the non-wildcard part is longer than the
|
|
* remaining pathname, surely it cannot match.
|
|
*/
|
|
if (prefix > namelen)
|
|
return 0;
|
|
|
|
if (fspathncmp(pattern, name, prefix))
|
|
return 0;
|
|
pattern += prefix;
|
|
patternlen -= prefix;
|
|
name += prefix;
|
|
namelen -= prefix;
|
|
|
|
/*
|
|
* If the whole pattern did not have a wildcard,
|
|
* then our prefix match is all we need; we
|
|
* do not need to call fnmatch at all.
|
|
*/
|
|
if (!patternlen && !namelen)
|
|
return 1;
|
|
}
|
|
|
|
return fnmatch_icase_mem(pattern, patternlen,
|
|
name, namelen,
|
|
WM_PATHNAME) == 0;
|
|
}
|
|
|
|
/*
|
|
* Scan the given exclude list in reverse to see whether pathname
|
|
* should be ignored. The first match (i.e. the last on the list), if
|
|
* any, determines the fate. Returns the exclude_list element which
|
|
* matched, or NULL for undecided.
|
|
*/
|
|
static struct exclude *last_exclude_matching_from_list(const char *pathname,
|
|
int pathlen,
|
|
const char *basename,
|
|
int *dtype,
|
|
struct exclude_list *el,
|
|
struct index_state *istate)
|
|
{
|
|
struct exclude *exc = NULL; /* undecided */
|
|
int i;
|
|
|
|
if (!el->nr)
|
|
return NULL; /* undefined */
|
|
|
|
for (i = el->nr - 1; 0 <= i; i--) {
|
|
struct exclude *x = el->excludes[i];
|
|
const char *exclude = x->pattern;
|
|
int prefix = x->nowildcardlen;
|
|
|
|
if (x->flags & EXC_FLAG_MUSTBEDIR) {
|
|
if (*dtype == DT_UNKNOWN)
|
|
*dtype = get_dtype(NULL, istate, pathname, pathlen);
|
|
if (*dtype != DT_DIR)
|
|
continue;
|
|
}
|
|
|
|
if (x->flags & EXC_FLAG_NODIR) {
|
|
if (match_basename(basename,
|
|
pathlen - (basename - pathname),
|
|
exclude, prefix, x->patternlen,
|
|
x->flags)) {
|
|
exc = x;
|
|
break;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
assert(x->baselen == 0 || x->base[x->baselen - 1] == '/');
|
|
if (match_pathname(pathname, pathlen,
|
|
x->base, x->baselen ? x->baselen - 1 : 0,
|
|
exclude, prefix, x->patternlen, x->flags)) {
|
|
exc = x;
|
|
break;
|
|
}
|
|
}
|
|
return exc;
|
|
}
|
|
|
|
/*
|
|
* Scan the list and let the last match determine the fate.
|
|
* Return 1 for exclude, 0 for include and -1 for undecided.
|
|
*/
|
|
int is_excluded_from_list(const char *pathname,
|
|
int pathlen, const char *basename, int *dtype,
|
|
struct exclude_list *el, struct index_state *istate)
|
|
{
|
|
struct exclude *exclude;
|
|
exclude = last_exclude_matching_from_list(pathname, pathlen, basename,
|
|
dtype, el, istate);
|
|
if (exclude)
|
|
return exclude->flags & EXC_FLAG_NEGATIVE ? 0 : 1;
|
|
return -1; /* undecided */
|
|
}
|
|
|
|
static struct exclude *last_exclude_matching_from_lists(struct dir_struct *dir,
|
|
struct index_state *istate,
|
|
const char *pathname, int pathlen, const char *basename,
|
|
int *dtype_p)
|
|
{
|
|
int i, j;
|
|
struct exclude_list_group *group;
|
|
struct exclude *exclude;
|
|
for (i = EXC_CMDL; i <= EXC_FILE; i++) {
|
|
group = &dir->exclude_list_group[i];
|
|
for (j = group->nr - 1; j >= 0; j--) {
|
|
exclude = last_exclude_matching_from_list(
|
|
pathname, pathlen, basename, dtype_p,
|
|
&group->el[j], istate);
|
|
if (exclude)
|
|
return exclude;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Loads the per-directory exclude list for the substring of base
|
|
* which has a char length of baselen.
|
|
*/
|
|
static void prep_exclude(struct dir_struct *dir,
|
|
struct index_state *istate,
|
|
const char *base, int baselen)
|
|
{
|
|
struct exclude_list_group *group;
|
|
struct exclude_list *el;
|
|
struct exclude_stack *stk = NULL;
|
|
struct untracked_cache_dir *untracked;
|
|
int current;
|
|
|
|
group = &dir->exclude_list_group[EXC_DIRS];
|
|
|
|
/*
|
|
* Pop the exclude lists from the EXCL_DIRS exclude_list_group
|
|
* which originate from directories not in the prefix of the
|
|
* path being checked.
|
|
*/
|
|
while ((stk = dir->exclude_stack) != NULL) {
|
|
if (stk->baselen <= baselen &&
|
|
!strncmp(dir->basebuf.buf, base, stk->baselen))
|
|
break;
|
|
el = &group->el[dir->exclude_stack->exclude_ix];
|
|
dir->exclude_stack = stk->prev;
|
|
dir->exclude = NULL;
|
|
free((char *)el->src); /* see strbuf_detach() below */
|
|
clear_exclude_list(el);
|
|
free(stk);
|
|
group->nr--;
|
|
}
|
|
|
|
/* Skip traversing into sub directories if the parent is excluded */
|
|
if (dir->exclude)
|
|
return;
|
|
|
|
/*
|
|
* Lazy initialization. All call sites currently just
|
|
* memset(dir, 0, sizeof(*dir)) before use. Changing all of
|
|
* them seems lots of work for little benefit.
|
|
*/
|
|
if (!dir->basebuf.buf)
|
|
strbuf_init(&dir->basebuf, PATH_MAX);
|
|
|
|
/* Read from the parent directories and push them down. */
|
|
current = stk ? stk->baselen : -1;
|
|
strbuf_setlen(&dir->basebuf, current < 0 ? 0 : current);
|
|
if (dir->untracked)
|
|
untracked = stk ? stk->ucd : dir->untracked->root;
|
|
else
|
|
untracked = NULL;
|
|
|
|
while (current < baselen) {
|
|
const char *cp;
|
|
struct oid_stat oid_stat;
|
|
|
|
stk = xcalloc(1, sizeof(*stk));
|
|
if (current < 0) {
|
|
cp = base;
|
|
current = 0;
|
|
} else {
|
|
cp = strchr(base + current + 1, '/');
|
|
if (!cp)
|
|
die("oops in prep_exclude");
|
|
cp++;
|
|
untracked =
|
|
lookup_untracked(dir->untracked, untracked,
|
|
base + current,
|
|
cp - base - current);
|
|
}
|
|
stk->prev = dir->exclude_stack;
|
|
stk->baselen = cp - base;
|
|
stk->exclude_ix = group->nr;
|
|
stk->ucd = untracked;
|
|
el = add_exclude_list(dir, EXC_DIRS, NULL);
|
|
strbuf_add(&dir->basebuf, base + current, stk->baselen - current);
|
|
assert(stk->baselen == dir->basebuf.len);
|
|
|
|
/* Abort if the directory is excluded */
|
|
if (stk->baselen) {
|
|
int dt = DT_DIR;
|
|
dir->basebuf.buf[stk->baselen - 1] = 0;
|
|
dir->exclude = last_exclude_matching_from_lists(dir,
|
|
istate,
|
|
dir->basebuf.buf, stk->baselen - 1,
|
|
dir->basebuf.buf + current, &dt);
|
|
dir->basebuf.buf[stk->baselen - 1] = '/';
|
|
if (dir->exclude &&
|
|
dir->exclude->flags & EXC_FLAG_NEGATIVE)
|
|
dir->exclude = NULL;
|
|
if (dir->exclude) {
|
|
dir->exclude_stack = stk;
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Try to read per-directory file */
|
|
oidclr(&oid_stat.oid);
|
|
oid_stat.valid = 0;
|
|
if (dir->exclude_per_dir &&
|
|
/*
|
|
* If we know that no files have been added in
|
|
* this directory (i.e. valid_cached_dir() has
|
|
* been executed and set untracked->valid) ..
|
|
*/
|
|
(!untracked || !untracked->valid ||
|
|
/*
|
|
* .. and .gitignore does not exist before
|
|
* (i.e. null exclude_sha1). Then we can skip
|
|
* loading .gitignore, which would result in
|
|
* ENOENT anyway.
|
|
*/
|
|
!is_null_sha1(untracked->exclude_sha1))) {
|
|
/*
|
|
* dir->basebuf gets reused by the traversal, but we
|
|
* need fname to remain unchanged to ensure the src
|
|
* member of each struct exclude correctly
|
|
* back-references its source file. Other invocations
|
|
* of add_exclude_list provide stable strings, so we
|
|
* strbuf_detach() and free() here in the caller.
|
|
*/
|
|
struct strbuf sb = STRBUF_INIT;
|
|
strbuf_addbuf(&sb, &dir->basebuf);
|
|
strbuf_addstr(&sb, dir->exclude_per_dir);
|
|
el->src = strbuf_detach(&sb, NULL);
|
|
add_excludes(el->src, el->src, stk->baselen, el, istate,
|
|
untracked ? &oid_stat : NULL);
|
|
}
|
|
/*
|
|
* NEEDSWORK: when untracked cache is enabled, prep_exclude()
|
|
* will first be called in valid_cached_dir() then maybe many
|
|
* times more in last_exclude_matching(). When the cache is
|
|
* used, last_exclude_matching() will not be called and
|
|
* reading .gitignore content will be a waste.
|
|
*
|
|
* So when it's called by valid_cached_dir() and we can get
|
|
* .gitignore SHA-1 from the index (i.e. .gitignore is not
|
|
* modified on work tree), we could delay reading the
|
|
* .gitignore content until we absolutely need it in
|
|
* last_exclude_matching(). Be careful about ignore rule
|
|
* order, though, if you do that.
|
|
*/
|
|
if (untracked &&
|
|
hashcmp(oid_stat.oid.hash, untracked->exclude_sha1)) {
|
|
invalidate_gitignore(dir->untracked, untracked);
|
|
hashcpy(untracked->exclude_sha1, oid_stat.oid.hash);
|
|
}
|
|
dir->exclude_stack = stk;
|
|
current = stk->baselen;
|
|
}
|
|
strbuf_setlen(&dir->basebuf, baselen);
|
|
}
|
|
|
|
/*
|
|
* Loads the exclude lists for the directory containing pathname, then
|
|
* scans all exclude lists to determine whether pathname is excluded.
|
|
* Returns the exclude_list element which matched, or NULL for
|
|
* undecided.
|
|
*/
|
|
struct exclude *last_exclude_matching(struct dir_struct *dir,
|
|
struct index_state *istate,
|
|
const char *pathname,
|
|
int *dtype_p)
|
|
{
|
|
int pathlen = strlen(pathname);
|
|
const char *basename = strrchr(pathname, '/');
|
|
basename = (basename) ? basename+1 : pathname;
|
|
|
|
prep_exclude(dir, istate, pathname, basename-pathname);
|
|
|
|
if (dir->exclude)
|
|
return dir->exclude;
|
|
|
|
return last_exclude_matching_from_lists(dir, istate, pathname, pathlen,
|
|
basename, dtype_p);
|
|
}
|
|
|
|
/*
|
|
* Loads the exclude lists for the directory containing pathname, then
|
|
* scans all exclude lists to determine whether pathname is excluded.
|
|
* Returns 1 if true, otherwise 0.
|
|
*/
|
|
int is_excluded(struct dir_struct *dir, struct index_state *istate,
|
|
const char *pathname, int *dtype_p)
|
|
{
|
|
struct exclude *exclude =
|
|
last_exclude_matching(dir, istate, pathname, dtype_p);
|
|
if (exclude)
|
|
return exclude->flags & EXC_FLAG_NEGATIVE ? 0 : 1;
|
|
return 0;
|
|
}
|
|
|
|
static struct dir_entry *dir_entry_new(const char *pathname, int len)
|
|
{
|
|
struct dir_entry *ent;
|
|
|
|
FLEX_ALLOC_MEM(ent, name, pathname, len);
|
|
ent->len = len;
|
|
return ent;
|
|
}
|
|
|
|
static struct dir_entry *dir_add_name(struct dir_struct *dir,
|
|
struct index_state *istate,
|
|
const char *pathname, int len)
|
|
{
|
|
if (index_file_exists(istate, pathname, len, ignore_case))
|
|
return NULL;
|
|
|
|
ALLOC_GROW(dir->entries, dir->nr+1, dir->alloc);
|
|
return dir->entries[dir->nr++] = dir_entry_new(pathname, len);
|
|
}
|
|
|
|
struct dir_entry *dir_add_ignored(struct dir_struct *dir,
|
|
struct index_state *istate,
|
|
const char *pathname, int len)
|
|
{
|
|
if (!index_name_is_other(istate, pathname, len))
|
|
return NULL;
|
|
|
|
ALLOC_GROW(dir->ignored, dir->ignored_nr+1, dir->ignored_alloc);
|
|
return dir->ignored[dir->ignored_nr++] = dir_entry_new(pathname, len);
|
|
}
|
|
|
|
enum exist_status {
|
|
index_nonexistent = 0,
|
|
index_directory,
|
|
index_gitdir
|
|
};
|
|
|
|
/*
|
|
* Do not use the alphabetically sorted index to look up
|
|
* the directory name; instead, use the case insensitive
|
|
* directory hash.
|
|
*/
|
|
static enum exist_status directory_exists_in_index_icase(struct index_state *istate,
|
|
const char *dirname, int len)
|
|
{
|
|
struct cache_entry *ce;
|
|
|
|
if (index_dir_exists(istate, dirname, len))
|
|
return index_directory;
|
|
|
|
ce = index_file_exists(istate, dirname, len, ignore_case);
|
|
if (ce && S_ISGITLINK(ce->ce_mode))
|
|
return index_gitdir;
|
|
|
|
return index_nonexistent;
|
|
}
|
|
|
|
/*
|
|
* The index sorts alphabetically by entry name, which
|
|
* means that a gitlink sorts as '\0' at the end, while
|
|
* a directory (which is defined not as an entry, but as
|
|
* the files it contains) will sort with the '/' at the
|
|
* end.
|
|
*/
|
|
static enum exist_status directory_exists_in_index(struct index_state *istate,
|
|
const char *dirname, int len)
|
|
{
|
|
int pos;
|
|
|
|
if (ignore_case)
|
|
return directory_exists_in_index_icase(istate, dirname, len);
|
|
|
|
pos = index_name_pos(istate, dirname, len);
|
|
if (pos < 0)
|
|
pos = -pos-1;
|
|
while (pos < istate->cache_nr) {
|
|
const struct cache_entry *ce = istate->cache[pos++];
|
|
unsigned char endchar;
|
|
|
|
if (strncmp(ce->name, dirname, len))
|
|
break;
|
|
endchar = ce->name[len];
|
|
if (endchar > '/')
|
|
break;
|
|
if (endchar == '/')
|
|
return index_directory;
|
|
if (!endchar && S_ISGITLINK(ce->ce_mode))
|
|
return index_gitdir;
|
|
}
|
|
return index_nonexistent;
|
|
}
|
|
|
|
/*
|
|
* When we find a directory when traversing the filesystem, we
|
|
* have three distinct cases:
|
|
*
|
|
* - ignore it
|
|
* - see it as a directory
|
|
* - recurse into it
|
|
*
|
|
* and which one we choose depends on a combination of existing
|
|
* git index contents and the flags passed into the directory
|
|
* traversal routine.
|
|
*
|
|
* Case 1: If we *already* have entries in the index under that
|
|
* directory name, we always recurse into the directory to see
|
|
* all the files.
|
|
*
|
|
* Case 2: If we *already* have that directory name as a gitlink,
|
|
* we always continue to see it as a gitlink, regardless of whether
|
|
* there is an actual git directory there or not (it might not
|
|
* be checked out as a subproject!)
|
|
*
|
|
* Case 3: if we didn't have it in the index previously, we
|
|
* have a few sub-cases:
|
|
*
|
|
* (a) if "show_other_directories" is true, we show it as
|
|
* just a directory, unless "hide_empty_directories" is
|
|
* also true, in which case we need to check if it contains any
|
|
* untracked and / or ignored files.
|
|
* (b) if it looks like a git directory, and we don't have
|
|
* 'no_gitlinks' set we treat it as a gitlink, and show it
|
|
* as a directory.
|
|
* (c) otherwise, we recurse into it.
|
|
*/
|
|
static enum path_treatment treat_directory(struct dir_struct *dir,
|
|
struct index_state *istate,
|
|
struct untracked_cache_dir *untracked,
|
|
const char *dirname, int len, int baselen, int exclude,
|
|
const struct pathspec *pathspec)
|
|
{
|
|
/* The "len-1" is to strip the final '/' */
|
|
switch (directory_exists_in_index(istate, dirname, len-1)) {
|
|
case index_directory:
|
|
return path_recurse;
|
|
|
|
case index_gitdir:
|
|
return path_none;
|
|
|
|
case index_nonexistent:
|
|
if (dir->flags & DIR_SHOW_OTHER_DIRECTORIES)
|
|
break;
|
|
if (exclude &&
|
|
(dir->flags & DIR_SHOW_IGNORED_TOO) &&
|
|
(dir->flags & DIR_SHOW_IGNORED_TOO_MODE_MATCHING)) {
|
|
|
|
/*
|
|
* This is an excluded directory and we are
|
|
* showing ignored paths that match an exclude
|
|
* pattern. (e.g. show directory as ignored
|
|
* only if it matches an exclude pattern).
|
|
* This path will either be 'path_excluded`
|
|
* (if we are showing empty directories or if
|
|
* the directory is not empty), or will be
|
|
* 'path_none' (empty directory, and we are
|
|
* not showing empty directories).
|
|
*/
|
|
if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))
|
|
return path_excluded;
|
|
|
|
if (read_directory_recursive(dir, istate, dirname, len,
|
|
untracked, 1, 1, pathspec) == path_excluded)
|
|
return path_excluded;
|
|
|
|
return path_none;
|
|
}
|
|
if (!(dir->flags & DIR_NO_GITLINKS)) {
|
|
struct object_id oid;
|
|
if (resolve_gitlink_ref(dirname, "HEAD", &oid) == 0)
|
|
return exclude ? path_excluded : path_untracked;
|
|
}
|
|
return path_recurse;
|
|
}
|
|
|
|
/* This is the "show_other_directories" case */
|
|
|
|
if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))
|
|
return exclude ? path_excluded : path_untracked;
|
|
|
|
untracked = lookup_untracked(dir->untracked, untracked,
|
|
dirname + baselen, len - baselen);
|
|
|
|
/*
|
|
* If this is an excluded directory, then we only need to check if
|
|
* the directory contains any files.
|
|
*/
|
|
return read_directory_recursive(dir, istate, dirname, len,
|
|
untracked, 1, exclude, pathspec);
|
|
}
|
|
|
|
/*
|
|
* This is an inexact early pruning of any recursive directory
|
|
* reading - if the path cannot possibly be in the pathspec,
|
|
* return true, and we'll skip it early.
|
|
*/
|
|
static int simplify_away(const char *path, int pathlen,
|
|
const struct pathspec *pathspec)
|
|
{
|
|
int i;
|
|
|
|
if (!pathspec || !pathspec->nr)
|
|
return 0;
|
|
|
|
GUARD_PATHSPEC(pathspec,
|
|
PATHSPEC_FROMTOP |
|
|
PATHSPEC_MAXDEPTH |
|
|
PATHSPEC_LITERAL |
|
|
PATHSPEC_GLOB |
|
|
PATHSPEC_ICASE |
|
|
PATHSPEC_EXCLUDE |
|
|
PATHSPEC_ATTR);
|
|
|
|
for (i = 0; i < pathspec->nr; i++) {
|
|
const struct pathspec_item *item = &pathspec->items[i];
|
|
int len = item->nowildcard_len;
|
|
|
|
if (len > pathlen)
|
|
len = pathlen;
|
|
if (!ps_strncmp(item, item->match, path, len))
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* This function tells us whether an excluded path matches a
|
|
* list of "interesting" pathspecs. That is, whether a path matched
|
|
* by any of the pathspecs could possibly be ignored by excluding
|
|
* the specified path. This can happen if:
|
|
*
|
|
* 1. the path is mentioned explicitly in the pathspec
|
|
*
|
|
* 2. the path is a directory prefix of some element in the
|
|
* pathspec
|
|
*/
|
|
static int exclude_matches_pathspec(const char *path, int pathlen,
|
|
const struct pathspec *pathspec)
|
|
{
|
|
int i;
|
|
|
|
if (!pathspec || !pathspec->nr)
|
|
return 0;
|
|
|
|
GUARD_PATHSPEC(pathspec,
|
|
PATHSPEC_FROMTOP |
|
|
PATHSPEC_MAXDEPTH |
|
|
PATHSPEC_LITERAL |
|
|
PATHSPEC_GLOB |
|
|
PATHSPEC_ICASE |
|
|
PATHSPEC_EXCLUDE);
|
|
|
|
for (i = 0; i < pathspec->nr; i++) {
|
|
const struct pathspec_item *item = &pathspec->items[i];
|
|
int len = item->nowildcard_len;
|
|
|
|
if (len == pathlen &&
|
|
!ps_strncmp(item, item->match, path, pathlen))
|
|
return 1;
|
|
if (len > pathlen &&
|
|
item->match[pathlen] == '/' &&
|
|
!ps_strncmp(item, item->match, path, pathlen))
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int get_index_dtype(struct index_state *istate,
|
|
const char *path, int len)
|
|
{
|
|
int pos;
|
|
const struct cache_entry *ce;
|
|
|
|
ce = index_file_exists(istate, path, len, 0);
|
|
if (ce) {
|
|
if (!ce_uptodate(ce))
|
|
return DT_UNKNOWN;
|
|
if (S_ISGITLINK(ce->ce_mode))
|
|
return DT_DIR;
|
|
/*
|
|
* Nobody actually cares about the
|
|
* difference between DT_LNK and DT_REG
|
|
*/
|
|
return DT_REG;
|
|
}
|
|
|
|
/* Try to look it up as a directory */
|
|
pos = index_name_pos(istate, path, len);
|
|
if (pos >= 0)
|
|
return DT_UNKNOWN;
|
|
pos = -pos-1;
|
|
while (pos < istate->cache_nr) {
|
|
ce = istate->cache[pos++];
|
|
if (strncmp(ce->name, path, len))
|
|
break;
|
|
if (ce->name[len] > '/')
|
|
break;
|
|
if (ce->name[len] < '/')
|
|
continue;
|
|
if (!ce_uptodate(ce))
|
|
break; /* continue? */
|
|
return DT_DIR;
|
|
}
|
|
return DT_UNKNOWN;
|
|
}
|
|
|
|
static int get_dtype(struct dirent *de, struct index_state *istate,
|
|
const char *path, int len)
|
|
{
|
|
int dtype = de ? DTYPE(de) : DT_UNKNOWN;
|
|
struct stat st;
|
|
|
|
if (dtype != DT_UNKNOWN)
|
|
return dtype;
|
|
dtype = get_index_dtype(istate, path, len);
|
|
if (dtype != DT_UNKNOWN)
|
|
return dtype;
|
|
if (lstat(path, &st))
|
|
return dtype;
|
|
if (S_ISREG(st.st_mode))
|
|
return DT_REG;
|
|
if (S_ISDIR(st.st_mode))
|
|
return DT_DIR;
|
|
if (S_ISLNK(st.st_mode))
|
|
return DT_LNK;
|
|
return dtype;
|
|
}
|
|
|
|
static enum path_treatment treat_one_path(struct dir_struct *dir,
|
|
struct untracked_cache_dir *untracked,
|
|
struct index_state *istate,
|
|
struct strbuf *path,
|
|
int baselen,
|
|
const struct pathspec *pathspec,
|
|
int dtype, struct dirent *de)
|
|
{
|
|
int exclude;
|
|
int has_path_in_index = !!index_file_exists(istate, path->buf, path->len, ignore_case);
|
|
enum path_treatment path_treatment;
|
|
|
|
if (dtype == DT_UNKNOWN)
|
|
dtype = get_dtype(de, istate, path->buf, path->len);
|
|
|
|
/* Always exclude indexed files */
|
|
if (dtype != DT_DIR && has_path_in_index)
|
|
return path_none;
|
|
|
|
/*
|
|
* When we are looking at a directory P in the working tree,
|
|
* there are three cases:
|
|
*
|
|
* (1) P exists in the index. Everything inside the directory P in
|
|
* the working tree needs to go when P is checked out from the
|
|
* index.
|
|
*
|
|
* (2) P does not exist in the index, but there is P/Q in the index.
|
|
* We know P will stay a directory when we check out the contents
|
|
* of the index, but we do not know yet if there is a directory
|
|
* P/Q in the working tree to be killed, so we need to recurse.
|
|
*
|
|
* (3) P does not exist in the index, and there is no P/Q in the index
|
|
* to require P to be a directory, either. Only in this case, we
|
|
* know that everything inside P will not be killed without
|
|
* recursing.
|
|
*/
|
|
if ((dir->flags & DIR_COLLECT_KILLED_ONLY) &&
|
|
(dtype == DT_DIR) &&
|
|
!has_path_in_index &&
|
|
(directory_exists_in_index(istate, path->buf, path->len) == index_nonexistent))
|
|
return path_none;
|
|
|
|
exclude = is_excluded(dir, istate, path->buf, &dtype);
|
|
|
|
/*
|
|
* Excluded? If we don't explicitly want to show
|
|
* ignored files, ignore it
|
|
*/
|
|
if (exclude && !(dir->flags & (DIR_SHOW_IGNORED|DIR_SHOW_IGNORED_TOO)))
|
|
return path_excluded;
|
|
|
|
switch (dtype) {
|
|
default:
|
|
return path_none;
|
|
case DT_DIR:
|
|
strbuf_addch(path, '/');
|
|
path_treatment = treat_directory(dir, istate, untracked,
|
|
path->buf, path->len,
|
|
baselen, exclude, pathspec);
|
|
/*
|
|
* If 1) we only want to return directories that
|
|
* match an exclude pattern and 2) this directory does
|
|
* not match an exclude pattern but all of its
|
|
* contents are excluded, then indicate that we should
|
|
* recurse into this directory (instead of marking the
|
|
* directory itself as an ignored path).
|
|
*/
|
|
if (!exclude &&
|
|
path_treatment == path_excluded &&
|
|
(dir->flags & DIR_SHOW_IGNORED_TOO) &&
|
|
(dir->flags & DIR_SHOW_IGNORED_TOO_MODE_MATCHING))
|
|
return path_recurse;
|
|
return path_treatment;
|
|
case DT_REG:
|
|
case DT_LNK:
|
|
return exclude ? path_excluded : path_untracked;
|
|
}
|
|
}
|
|
|
|
static enum path_treatment treat_path_fast(struct dir_struct *dir,
|
|
struct untracked_cache_dir *untracked,
|
|
struct cached_dir *cdir,
|
|
struct index_state *istate,
|
|
struct strbuf *path,
|
|
int baselen,
|
|
const struct pathspec *pathspec)
|
|
{
|
|
strbuf_setlen(path, baselen);
|
|
if (!cdir->ucd) {
|
|
strbuf_addstr(path, cdir->file);
|
|
return path_untracked;
|
|
}
|
|
strbuf_addstr(path, cdir->ucd->name);
|
|
/* treat_one_path() does this before it calls treat_directory() */
|
|
strbuf_complete(path, '/');
|
|
if (cdir->ucd->check_only)
|
|
/*
|
|
* check_only is set as a result of treat_directory() getting
|
|
* to its bottom. Verify again the same set of directories
|
|
* with check_only set.
|
|
*/
|
|
return read_directory_recursive(dir, istate, path->buf, path->len,
|
|
cdir->ucd, 1, 0, pathspec);
|
|
/*
|
|
* We get path_recurse in the first run when
|
|
* directory_exists_in_index() returns index_nonexistent. We
|
|
* are sure that new changes in the index does not impact the
|
|
* outcome. Return now.
|
|
*/
|
|
return path_recurse;
|
|
}
|
|
|
|
static enum path_treatment treat_path(struct dir_struct *dir,
|
|
struct untracked_cache_dir *untracked,
|
|
struct cached_dir *cdir,
|
|
struct index_state *istate,
|
|
struct strbuf *path,
|
|
int baselen,
|
|
const struct pathspec *pathspec)
|
|
{
|
|
int dtype;
|
|
struct dirent *de = cdir->de;
|
|
|
|
if (!de)
|
|
return treat_path_fast(dir, untracked, cdir, istate, path,
|
|
baselen, pathspec);
|
|
if (is_dot_or_dotdot(de->d_name) || !strcmp(de->d_name, ".git"))
|
|
return path_none;
|
|
strbuf_setlen(path, baselen);
|
|
strbuf_addstr(path, de->d_name);
|
|
if (simplify_away(path->buf, path->len, pathspec))
|
|
return path_none;
|
|
|
|
dtype = DTYPE(de);
|
|
return treat_one_path(dir, untracked, istate, path, baselen, pathspec, dtype, de);
|
|
}
|
|
|
|
static void add_untracked(struct untracked_cache_dir *dir, const char *name)
|
|
{
|
|
if (!dir)
|
|
return;
|
|
ALLOC_GROW(dir->untracked, dir->untracked_nr + 1,
|
|
dir->untracked_alloc);
|
|
dir->untracked[dir->untracked_nr++] = xstrdup(name);
|
|
}
|
|
|
|
static int valid_cached_dir(struct dir_struct *dir,
|
|
struct untracked_cache_dir *untracked,
|
|
struct index_state *istate,
|
|
struct strbuf *path,
|
|
int check_only)
|
|
{
|
|
struct stat st;
|
|
|
|
if (!untracked)
|
|
return 0;
|
|
|
|
/*
|
|
* With fsmonitor, we can trust the untracked cache's valid field.
|
|
*/
|
|
refresh_fsmonitor(istate);
|
|
if (!(dir->untracked->use_fsmonitor && untracked->valid)) {
|
|
if (stat(path->len ? path->buf : ".", &st)) {
|
|
invalidate_directory(dir->untracked, untracked);
|
|
memset(&untracked->stat_data, 0, sizeof(untracked->stat_data));
|
|
return 0;
|
|
}
|
|
if (!untracked->valid ||
|
|
match_stat_data_racy(istate, &untracked->stat_data, &st)) {
|
|
if (untracked->valid)
|
|
invalidate_directory(dir->untracked, untracked);
|
|
fill_stat_data(&untracked->stat_data, &st);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (untracked->check_only != !!check_only) {
|
|
invalidate_directory(dir->untracked, untracked);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* prep_exclude will be called eventually on this directory,
|
|
* but it's called much later in last_exclude_matching(). We
|
|
* need it now to determine the validity of the cache for this
|
|
* path. The next calls will be nearly no-op, the way
|
|
* prep_exclude() is designed.
|
|
*/
|
|
if (path->len && path->buf[path->len - 1] != '/') {
|
|
strbuf_addch(path, '/');
|
|
prep_exclude(dir, istate, path->buf, path->len);
|
|
strbuf_setlen(path, path->len - 1);
|
|
} else
|
|
prep_exclude(dir, istate, path->buf, path->len);
|
|
|
|
/* hopefully prep_exclude() haven't invalidated this entry... */
|
|
return untracked->valid;
|
|
}
|
|
|
|
static int open_cached_dir(struct cached_dir *cdir,
|
|
struct dir_struct *dir,
|
|
struct untracked_cache_dir *untracked,
|
|
struct index_state *istate,
|
|
struct strbuf *path,
|
|
int check_only)
|
|
{
|
|
memset(cdir, 0, sizeof(*cdir));
|
|
cdir->untracked = untracked;
|
|
if (valid_cached_dir(dir, untracked, istate, path, check_only))
|
|
return 0;
|
|
cdir->fdir = opendir(path->len ? path->buf : ".");
|
|
if (dir->untracked)
|
|
dir->untracked->dir_opened++;
|
|
if (!cdir->fdir)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
static int read_cached_dir(struct cached_dir *cdir)
|
|
{
|
|
if (cdir->fdir) {
|
|
cdir->de = readdir(cdir->fdir);
|
|
if (!cdir->de)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
while (cdir->nr_dirs < cdir->untracked->dirs_nr) {
|
|
struct untracked_cache_dir *d = cdir->untracked->dirs[cdir->nr_dirs];
|
|
if (!d->recurse) {
|
|
cdir->nr_dirs++;
|
|
continue;
|
|
}
|
|
cdir->ucd = d;
|
|
cdir->nr_dirs++;
|
|
return 0;
|
|
}
|
|
cdir->ucd = NULL;
|
|
if (cdir->nr_files < cdir->untracked->untracked_nr) {
|
|
struct untracked_cache_dir *d = cdir->untracked;
|
|
cdir->file = d->untracked[cdir->nr_files++];
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static void close_cached_dir(struct cached_dir *cdir)
|
|
{
|
|
if (cdir->fdir)
|
|
closedir(cdir->fdir);
|
|
/*
|
|
* We have gone through this directory and found no untracked
|
|
* entries. Mark it valid.
|
|
*/
|
|
if (cdir->untracked) {
|
|
cdir->untracked->valid = 1;
|
|
cdir->untracked->recurse = 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Read a directory tree. We currently ignore anything but
|
|
* directories, regular files and symlinks. That's because git
|
|
* doesn't handle them at all yet. Maybe that will change some
|
|
* day.
|
|
*
|
|
* Also, we ignore the name ".git" (even if it is not a directory).
|
|
* That likely will not change.
|
|
*
|
|
* If 'stop_at_first_file' is specified, 'path_excluded' is returned
|
|
* to signal that a file was found. This is the least significant value that
|
|
* indicates that a file was encountered that does not depend on the order of
|
|
* whether an untracked or exluded path was encountered first.
|
|
*
|
|
* Returns the most significant path_treatment value encountered in the scan.
|
|
* If 'stop_at_first_file' is specified, `path_excluded` is the most
|
|
* significant path_treatment value that will be returned.
|
|
*/
|
|
|
|
static enum path_treatment read_directory_recursive(struct dir_struct *dir,
|
|
struct index_state *istate, const char *base, int baselen,
|
|
struct untracked_cache_dir *untracked, int check_only,
|
|
int stop_at_first_file, const struct pathspec *pathspec)
|
|
{
|
|
struct cached_dir cdir;
|
|
enum path_treatment state, subdir_state, dir_state = path_none;
|
|
struct strbuf path = STRBUF_INIT;
|
|
|
|
strbuf_add(&path, base, baselen);
|
|
|
|
if (open_cached_dir(&cdir, dir, untracked, istate, &path, check_only))
|
|
goto out;
|
|
|
|
if (untracked)
|
|
untracked->check_only = !!check_only;
|
|
|
|
while (!read_cached_dir(&cdir)) {
|
|
/* check how the file or directory should be treated */
|
|
state = treat_path(dir, untracked, &cdir, istate, &path,
|
|
baselen, pathspec);
|
|
|
|
if (state > dir_state)
|
|
dir_state = state;
|
|
|
|
/* recurse into subdir if instructed by treat_path */
|
|
if ((state == path_recurse) ||
|
|
((state == path_untracked) &&
|
|
(dir->flags & DIR_SHOW_IGNORED_TOO) &&
|
|
(get_dtype(cdir.de, istate, path.buf, path.len) == DT_DIR))) {
|
|
struct untracked_cache_dir *ud;
|
|
ud = lookup_untracked(dir->untracked, untracked,
|
|
path.buf + baselen,
|
|
path.len - baselen);
|
|
subdir_state =
|
|
read_directory_recursive(dir, istate, path.buf,
|
|
path.len, ud,
|
|
check_only, stop_at_first_file, pathspec);
|
|
if (subdir_state > dir_state)
|
|
dir_state = subdir_state;
|
|
}
|
|
|
|
if (check_only) {
|
|
if (stop_at_first_file) {
|
|
/*
|
|
* If stopping at first file, then
|
|
* signal that a file was found by
|
|
* returning `path_excluded`. This is
|
|
* to return a consistent value
|
|
* regardless of whether an ignored or
|
|
* excluded file happened to be
|
|
* encountered 1st.
|
|
*
|
|
* In current usage, the
|
|
* `stop_at_first_file` is passed when
|
|
* an ancestor directory has matched
|
|
* an exclude pattern, so any found
|
|
* files will be excluded.
|
|
*/
|
|
if (dir_state >= path_excluded) {
|
|
dir_state = path_excluded;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* abort early if maximum state has been reached */
|
|
if (dir_state == path_untracked) {
|
|
if (cdir.fdir)
|
|
add_untracked(untracked, path.buf + baselen);
|
|
break;
|
|
}
|
|
/* skip the dir_add_* part */
|
|
continue;
|
|
}
|
|
|
|
/* add the path to the appropriate result list */
|
|
switch (state) {
|
|
case path_excluded:
|
|
if (dir->flags & DIR_SHOW_IGNORED)
|
|
dir_add_name(dir, istate, path.buf, path.len);
|
|
else if ((dir->flags & DIR_SHOW_IGNORED_TOO) ||
|
|
((dir->flags & DIR_COLLECT_IGNORED) &&
|
|
exclude_matches_pathspec(path.buf, path.len,
|
|
pathspec)))
|
|
dir_add_ignored(dir, istate, path.buf, path.len);
|
|
break;
|
|
|
|
case path_untracked:
|
|
if (dir->flags & DIR_SHOW_IGNORED)
|
|
break;
|
|
dir_add_name(dir, istate, path.buf, path.len);
|
|
if (cdir.fdir)
|
|
add_untracked(untracked, path.buf + baselen);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
close_cached_dir(&cdir);
|
|
out:
|
|
strbuf_release(&path);
|
|
|
|
return dir_state;
|
|
}
|
|
|
|
int cmp_dir_entry(const void *p1, const void *p2)
|
|
{
|
|
const struct dir_entry *e1 = *(const struct dir_entry **)p1;
|
|
const struct dir_entry *e2 = *(const struct dir_entry **)p2;
|
|
|
|
return name_compare(e1->name, e1->len, e2->name, e2->len);
|
|
}
|
|
|
|
/* check if *out lexically strictly contains *in */
|
|
int check_dir_entry_contains(const struct dir_entry *out, const struct dir_entry *in)
|
|
{
|
|
return (out->len < in->len) &&
|
|
(out->name[out->len - 1] == '/') &&
|
|
!memcmp(out->name, in->name, out->len);
|
|
}
|
|
|
|
static int treat_leading_path(struct dir_struct *dir,
|
|
struct index_state *istate,
|
|
const char *path, int len,
|
|
const struct pathspec *pathspec)
|
|
{
|
|
struct strbuf sb = STRBUF_INIT;
|
|
int baselen, rc = 0;
|
|
const char *cp;
|
|
int old_flags = dir->flags;
|
|
|
|
while (len && path[len - 1] == '/')
|
|
len--;
|
|
if (!len)
|
|
return 1;
|
|
baselen = 0;
|
|
dir->flags &= ~DIR_SHOW_OTHER_DIRECTORIES;
|
|
while (1) {
|
|
cp = path + baselen + !!baselen;
|
|
cp = memchr(cp, '/', path + len - cp);
|
|
if (!cp)
|
|
baselen = len;
|
|
else
|
|
baselen = cp - path;
|
|
strbuf_setlen(&sb, 0);
|
|
strbuf_add(&sb, path, baselen);
|
|
if (!is_directory(sb.buf))
|
|
break;
|
|
if (simplify_away(sb.buf, sb.len, pathspec))
|
|
break;
|
|
if (treat_one_path(dir, NULL, istate, &sb, baselen, pathspec,
|
|
DT_DIR, NULL) == path_none)
|
|
break; /* do not recurse into it */
|
|
if (len <= baselen) {
|
|
rc = 1;
|
|
break; /* finished checking */
|
|
}
|
|
}
|
|
strbuf_release(&sb);
|
|
dir->flags = old_flags;
|
|
return rc;
|
|
}
|
|
|
|
static const char *get_ident_string(void)
|
|
{
|
|
static struct strbuf sb = STRBUF_INIT;
|
|
struct utsname uts;
|
|
|
|
if (sb.len)
|
|
return sb.buf;
|
|
if (uname(&uts) < 0)
|
|
die_errno(_("failed to get kernel name and information"));
|
|
strbuf_addf(&sb, "Location %s, system %s", get_git_work_tree(),
|
|
uts.sysname);
|
|
return sb.buf;
|
|
}
|
|
|
|
static int ident_in_untracked(const struct untracked_cache *uc)
|
|
{
|
|
/*
|
|
* Previous git versions may have saved many NUL separated
|
|
* strings in the "ident" field, but it is insane to manage
|
|
* many locations, so just take care of the first one.
|
|
*/
|
|
|
|
return !strcmp(uc->ident.buf, get_ident_string());
|
|
}
|
|
|
|
static void set_untracked_ident(struct untracked_cache *uc)
|
|
{
|
|
strbuf_reset(&uc->ident);
|
|
strbuf_addstr(&uc->ident, get_ident_string());
|
|
|
|
/*
|
|
* This strbuf used to contain a list of NUL separated
|
|
* strings, so save NUL too for backward compatibility.
|
|
*/
|
|
strbuf_addch(&uc->ident, 0);
|
|
}
|
|
|
|
static void new_untracked_cache(struct index_state *istate)
|
|
{
|
|
struct untracked_cache *uc = xcalloc(1, sizeof(*uc));
|
|
strbuf_init(&uc->ident, 100);
|
|
uc->exclude_per_dir = ".gitignore";
|
|
/* should be the same flags used by git-status */
|
|
uc->dir_flags = DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
|
|
set_untracked_ident(uc);
|
|
istate->untracked = uc;
|
|
istate->cache_changed |= UNTRACKED_CHANGED;
|
|
}
|
|
|
|
void add_untracked_cache(struct index_state *istate)
|
|
{
|
|
if (!istate->untracked) {
|
|
new_untracked_cache(istate);
|
|
} else {
|
|
if (!ident_in_untracked(istate->untracked)) {
|
|
free_untracked_cache(istate->untracked);
|
|
new_untracked_cache(istate);
|
|
}
|
|
}
|
|
}
|
|
|
|
void remove_untracked_cache(struct index_state *istate)
|
|
{
|
|
if (istate->untracked) {
|
|
free_untracked_cache(istate->untracked);
|
|
istate->untracked = NULL;
|
|
istate->cache_changed |= UNTRACKED_CHANGED;
|
|
}
|
|
}
|
|
|
|
static struct untracked_cache_dir *validate_untracked_cache(struct dir_struct *dir,
|
|
int base_len,
|
|
const struct pathspec *pathspec)
|
|
{
|
|
struct untracked_cache_dir *root;
|
|
|
|
if (!dir->untracked || getenv("GIT_DISABLE_UNTRACKED_CACHE"))
|
|
return NULL;
|
|
|
|
/*
|
|
* We only support $GIT_DIR/info/exclude and core.excludesfile
|
|
* as the global ignore rule files. Any other additions
|
|
* (e.g. from command line) invalidate the cache. This
|
|
* condition also catches running setup_standard_excludes()
|
|
* before setting dir->untracked!
|
|
*/
|
|
if (dir->unmanaged_exclude_files)
|
|
return NULL;
|
|
|
|
/*
|
|
* Optimize for the main use case only: whole-tree git
|
|
* status. More work involved in treat_leading_path() if we
|
|
* use cache on just a subset of the worktree. pathspec
|
|
* support could make the matter even worse.
|
|
*/
|
|
if (base_len || (pathspec && pathspec->nr))
|
|
return NULL;
|
|
|
|
/* Different set of flags may produce different results */
|
|
if (dir->flags != dir->untracked->dir_flags ||
|
|
/*
|
|
* See treat_directory(), case index_nonexistent. Without
|
|
* this flag, we may need to also cache .git file content
|
|
* for the resolve_gitlink_ref() call, which we don't.
|
|
*/
|
|
!(dir->flags & DIR_SHOW_OTHER_DIRECTORIES) ||
|
|
/* We don't support collecting ignore files */
|
|
(dir->flags & (DIR_SHOW_IGNORED | DIR_SHOW_IGNORED_TOO |
|
|
DIR_COLLECT_IGNORED)))
|
|
return NULL;
|
|
|
|
/*
|
|
* If we use .gitignore in the cache and now you change it to
|
|
* .gitexclude, everything will go wrong.
|
|
*/
|
|
if (dir->exclude_per_dir != dir->untracked->exclude_per_dir &&
|
|
strcmp(dir->exclude_per_dir, dir->untracked->exclude_per_dir))
|
|
return NULL;
|
|
|
|
/*
|
|
* EXC_CMDL is not considered in the cache. If people set it,
|
|
* skip the cache.
|
|
*/
|
|
if (dir->exclude_list_group[EXC_CMDL].nr)
|
|
return NULL;
|
|
|
|
if (!ident_in_untracked(dir->untracked)) {
|
|
warning(_("Untracked cache is disabled on this system or location."));
|
|
return NULL;
|
|
}
|
|
|
|
if (!dir->untracked->root) {
|
|
const int len = sizeof(*dir->untracked->root);
|
|
dir->untracked->root = xmalloc(len);
|
|
memset(dir->untracked->root, 0, len);
|
|
}
|
|
|
|
/* Validate $GIT_DIR/info/exclude and core.excludesfile */
|
|
root = dir->untracked->root;
|
|
if (oidcmp(&dir->ss_info_exclude.oid,
|
|
&dir->untracked->ss_info_exclude.oid)) {
|
|
invalidate_gitignore(dir->untracked, root);
|
|
dir->untracked->ss_info_exclude = dir->ss_info_exclude;
|
|
}
|
|
if (oidcmp(&dir->ss_excludes_file.oid,
|
|
&dir->untracked->ss_excludes_file.oid)) {
|
|
invalidate_gitignore(dir->untracked, root);
|
|
dir->untracked->ss_excludes_file = dir->ss_excludes_file;
|
|
}
|
|
|
|
/* Make sure this directory is not dropped out at saving phase */
|
|
root->recurse = 1;
|
|
return root;
|
|
}
|
|
|
|
int read_directory(struct dir_struct *dir, struct index_state *istate,
|
|
const char *path, int len, const struct pathspec *pathspec)
|
|
{
|
|
struct untracked_cache_dir *untracked;
|
|
uint64_t start = getnanotime();
|
|
|
|
if (has_symlink_leading_path(path, len))
|
|
return dir->nr;
|
|
|
|
untracked = validate_untracked_cache(dir, len, pathspec);
|
|
if (!untracked)
|
|
/*
|
|
* make sure untracked cache code path is disabled,
|
|
* e.g. prep_exclude()
|
|
*/
|
|
dir->untracked = NULL;
|
|
if (!len || treat_leading_path(dir, istate, path, len, pathspec))
|
|
read_directory_recursive(dir, istate, path, len, untracked, 0, 0, pathspec);
|
|
QSORT(dir->entries, dir->nr, cmp_dir_entry);
|
|
QSORT(dir->ignored, dir->ignored_nr, cmp_dir_entry);
|
|
|
|
/*
|
|
* If DIR_SHOW_IGNORED_TOO is set, read_directory_recursive() will
|
|
* also pick up untracked contents of untracked dirs; by default
|
|
* we discard these, but given DIR_KEEP_UNTRACKED_CONTENTS we do not.
|
|
*/
|
|
if ((dir->flags & DIR_SHOW_IGNORED_TOO) &&
|
|
!(dir->flags & DIR_KEEP_UNTRACKED_CONTENTS)) {
|
|
int i, j;
|
|
|
|
/* remove from dir->entries untracked contents of untracked dirs */
|
|
for (i = j = 0; j < dir->nr; j++) {
|
|
if (i &&
|
|
check_dir_entry_contains(dir->entries[i - 1], dir->entries[j])) {
|
|
FREE_AND_NULL(dir->entries[j]);
|
|
} else {
|
|
dir->entries[i++] = dir->entries[j];
|
|
}
|
|
}
|
|
|
|
dir->nr = i;
|
|
}
|
|
|
|
trace_performance_since(start, "read directory %.*s", len, path);
|
|
if (dir->untracked) {
|
|
static struct trace_key trace_untracked_stats = TRACE_KEY_INIT(UNTRACKED_STATS);
|
|
trace_printf_key(&trace_untracked_stats,
|
|
"node creation: %u\n"
|
|
"gitignore invalidation: %u\n"
|
|
"directory invalidation: %u\n"
|
|
"opendir: %u\n",
|
|
dir->untracked->dir_created,
|
|
dir->untracked->gitignore_invalidated,
|
|
dir->untracked->dir_invalidated,
|
|
dir->untracked->dir_opened);
|
|
if (dir->untracked == istate->untracked &&
|
|
(dir->untracked->dir_opened ||
|
|
dir->untracked->gitignore_invalidated ||
|
|
dir->untracked->dir_invalidated))
|
|
istate->cache_changed |= UNTRACKED_CHANGED;
|
|
if (dir->untracked != istate->untracked) {
|
|
FREE_AND_NULL(dir->untracked);
|
|
}
|
|
}
|
|
return dir->nr;
|
|
}
|
|
|
|
int file_exists(const char *f)
|
|
{
|
|
struct stat sb;
|
|
return lstat(f, &sb) == 0;
|
|
}
|
|
|
|
static int cmp_icase(char a, char b)
|
|
{
|
|
if (a == b)
|
|
return 0;
|
|
if (ignore_case)
|
|
return toupper(a) - toupper(b);
|
|
return a - b;
|
|
}
|
|
|
|
/*
|
|
* Given two normalized paths (a trailing slash is ok), if subdir is
|
|
* outside dir, return -1. Otherwise return the offset in subdir that
|
|
* can be used as relative path to dir.
|
|
*/
|
|
int dir_inside_of(const char *subdir, const char *dir)
|
|
{
|
|
int offset = 0;
|
|
|
|
assert(dir && subdir && *dir && *subdir);
|
|
|
|
while (*dir && *subdir && !cmp_icase(*dir, *subdir)) {
|
|
dir++;
|
|
subdir++;
|
|
offset++;
|
|
}
|
|
|
|
/* hel[p]/me vs hel[l]/yeah */
|
|
if (*dir && *subdir)
|
|
return -1;
|
|
|
|
if (!*subdir)
|
|
return !*dir ? offset : -1; /* same dir */
|
|
|
|
/* foo/[b]ar vs foo/[] */
|
|
if (is_dir_sep(dir[-1]))
|
|
return is_dir_sep(subdir[-1]) ? offset : -1;
|
|
|
|
/* foo[/]bar vs foo[] */
|
|
return is_dir_sep(*subdir) ? offset + 1 : -1;
|
|
}
|
|
|
|
int is_inside_dir(const char *dir)
|
|
{
|
|
char *cwd;
|
|
int rc;
|
|
|
|
if (!dir)
|
|
return 0;
|
|
|
|
cwd = xgetcwd();
|
|
rc = (dir_inside_of(cwd, dir) >= 0);
|
|
free(cwd);
|
|
return rc;
|
|
}
|
|
|
|
int is_empty_dir(const char *path)
|
|
{
|
|
DIR *dir = opendir(path);
|
|
struct dirent *e;
|
|
int ret = 1;
|
|
|
|
if (!dir)
|
|
return 0;
|
|
|
|
while ((e = readdir(dir)) != NULL)
|
|
if (!is_dot_or_dotdot(e->d_name)) {
|
|
ret = 0;
|
|
break;
|
|
}
|
|
|
|
closedir(dir);
|
|
return ret;
|
|
}
|
|
|
|
static int remove_dir_recurse(struct strbuf *path, int flag, int *kept_up)
|
|
{
|
|
DIR *dir;
|
|
struct dirent *e;
|
|
int ret = 0, original_len = path->len, len, kept_down = 0;
|
|
int only_empty = (flag & REMOVE_DIR_EMPTY_ONLY);
|
|
int keep_toplevel = (flag & REMOVE_DIR_KEEP_TOPLEVEL);
|
|
struct object_id submodule_head;
|
|
|
|
if ((flag & REMOVE_DIR_KEEP_NESTED_GIT) &&
|
|
!resolve_gitlink_ref(path->buf, "HEAD", &submodule_head)) {
|
|
/* Do not descend and nuke a nested git work tree. */
|
|
if (kept_up)
|
|
*kept_up = 1;
|
|
return 0;
|
|
}
|
|
|
|
flag &= ~REMOVE_DIR_KEEP_TOPLEVEL;
|
|
dir = opendir(path->buf);
|
|
if (!dir) {
|
|
if (errno == ENOENT)
|
|
return keep_toplevel ? -1 : 0;
|
|
else if (errno == EACCES && !keep_toplevel)
|
|
/*
|
|
* An empty dir could be removable even if it
|
|
* is unreadable:
|
|
*/
|
|
return rmdir(path->buf);
|
|
else
|
|
return -1;
|
|
}
|
|
strbuf_complete(path, '/');
|
|
|
|
len = path->len;
|
|
while ((e = readdir(dir)) != NULL) {
|
|
struct stat st;
|
|
if (is_dot_or_dotdot(e->d_name))
|
|
continue;
|
|
|
|
strbuf_setlen(path, len);
|
|
strbuf_addstr(path, e->d_name);
|
|
if (lstat(path->buf, &st)) {
|
|
if (errno == ENOENT)
|
|
/*
|
|
* file disappeared, which is what we
|
|
* wanted anyway
|
|
*/
|
|
continue;
|
|
/* fall thru */
|
|
} else if (S_ISDIR(st.st_mode)) {
|
|
if (!remove_dir_recurse(path, flag, &kept_down))
|
|
continue; /* happy */
|
|
} else if (!only_empty &&
|
|
(!unlink(path->buf) || errno == ENOENT)) {
|
|
continue; /* happy, too */
|
|
}
|
|
|
|
/* path too long, stat fails, or non-directory still exists */
|
|
ret = -1;
|
|
break;
|
|
}
|
|
closedir(dir);
|
|
|
|
strbuf_setlen(path, original_len);
|
|
if (!ret && !keep_toplevel && !kept_down)
|
|
ret = (!rmdir(path->buf) || errno == ENOENT) ? 0 : -1;
|
|
else if (kept_up)
|
|
/*
|
|
* report the uplevel that it is not an error that we
|
|
* did not rmdir() our directory.
|
|
*/
|
|
*kept_up = !ret;
|
|
return ret;
|
|
}
|
|
|
|
int remove_dir_recursively(struct strbuf *path, int flag)
|
|
{
|
|
return remove_dir_recurse(path, flag, NULL);
|
|
}
|
|
|
|
static GIT_PATH_FUNC(git_path_info_exclude, "info/exclude")
|
|
|
|
void setup_standard_excludes(struct dir_struct *dir)
|
|
{
|
|
dir->exclude_per_dir = ".gitignore";
|
|
|
|
/* core.excludefile defaulting to $XDG_HOME/git/ignore */
|
|
if (!excludes_file)
|
|
excludes_file = xdg_config_home("ignore");
|
|
if (excludes_file && !access_or_warn(excludes_file, R_OK, 0))
|
|
add_excludes_from_file_1(dir, excludes_file,
|
|
dir->untracked ? &dir->ss_excludes_file : NULL);
|
|
|
|
/* per repository user preference */
|
|
if (startup_info->have_repository) {
|
|
const char *path = git_path_info_exclude();
|
|
if (!access_or_warn(path, R_OK, 0))
|
|
add_excludes_from_file_1(dir, path,
|
|
dir->untracked ? &dir->ss_info_exclude : NULL);
|
|
}
|
|
}
|
|
|
|
int remove_path(const char *name)
|
|
{
|
|
char *slash;
|
|
|
|
if (unlink(name) && !is_missing_file_error(errno))
|
|
return -1;
|
|
|
|
slash = strrchr(name, '/');
|
|
if (slash) {
|
|
char *dirs = xstrdup(name);
|
|
slash = dirs + (slash - name);
|
|
do {
|
|
*slash = '\0';
|
|
} while (rmdir(dirs) == 0 && (slash = strrchr(dirs, '/')));
|
|
free(dirs);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Frees memory within dir which was allocated for exclude lists and
|
|
* the exclude_stack. Does not free dir itself.
|
|
*/
|
|
void clear_directory(struct dir_struct *dir)
|
|
{
|
|
int i, j;
|
|
struct exclude_list_group *group;
|
|
struct exclude_list *el;
|
|
struct exclude_stack *stk;
|
|
|
|
for (i = EXC_CMDL; i <= EXC_FILE; i++) {
|
|
group = &dir->exclude_list_group[i];
|
|
for (j = 0; j < group->nr; j++) {
|
|
el = &group->el[j];
|
|
if (i == EXC_DIRS)
|
|
free((char *)el->src);
|
|
clear_exclude_list(el);
|
|
}
|
|
free(group->el);
|
|
}
|
|
|
|
stk = dir->exclude_stack;
|
|
while (stk) {
|
|
struct exclude_stack *prev = stk->prev;
|
|
free(stk);
|
|
stk = prev;
|
|
}
|
|
strbuf_release(&dir->basebuf);
|
|
}
|
|
|
|
struct ondisk_untracked_cache {
|
|
struct stat_data info_exclude_stat;
|
|
struct stat_data excludes_file_stat;
|
|
uint32_t dir_flags;
|
|
unsigned char info_exclude_sha1[20];
|
|
unsigned char excludes_file_sha1[20];
|
|
char exclude_per_dir[FLEX_ARRAY];
|
|
};
|
|
|
|
#define ouc_offset(x) offsetof(struct ondisk_untracked_cache, x)
|
|
#define ouc_size(len) (ouc_offset(exclude_per_dir) + len + 1)
|
|
|
|
struct write_data {
|
|
int index; /* number of written untracked_cache_dir */
|
|
struct ewah_bitmap *check_only; /* from untracked_cache_dir */
|
|
struct ewah_bitmap *valid; /* from untracked_cache_dir */
|
|
struct ewah_bitmap *sha1_valid; /* set if exclude_sha1 is not null */
|
|
struct strbuf out;
|
|
struct strbuf sb_stat;
|
|
struct strbuf sb_sha1;
|
|
};
|
|
|
|
static void stat_data_to_disk(struct stat_data *to, const struct stat_data *from)
|
|
{
|
|
to->sd_ctime.sec = htonl(from->sd_ctime.sec);
|
|
to->sd_ctime.nsec = htonl(from->sd_ctime.nsec);
|
|
to->sd_mtime.sec = htonl(from->sd_mtime.sec);
|
|
to->sd_mtime.nsec = htonl(from->sd_mtime.nsec);
|
|
to->sd_dev = htonl(from->sd_dev);
|
|
to->sd_ino = htonl(from->sd_ino);
|
|
to->sd_uid = htonl(from->sd_uid);
|
|
to->sd_gid = htonl(from->sd_gid);
|
|
to->sd_size = htonl(from->sd_size);
|
|
}
|
|
|
|
static void write_one_dir(struct untracked_cache_dir *untracked,
|
|
struct write_data *wd)
|
|
{
|
|
struct stat_data stat_data;
|
|
struct strbuf *out = &wd->out;
|
|
unsigned char intbuf[16];
|
|
unsigned int intlen, value;
|
|
int i = wd->index++;
|
|
|
|
/*
|
|
* untracked_nr should be reset whenever valid is clear, but
|
|
* for safety..
|
|
*/
|
|
if (!untracked->valid) {
|
|
untracked->untracked_nr = 0;
|
|
untracked->check_only = 0;
|
|
}
|
|
|
|
if (untracked->check_only)
|
|
ewah_set(wd->check_only, i);
|
|
if (untracked->valid) {
|
|
ewah_set(wd->valid, i);
|
|
stat_data_to_disk(&stat_data, &untracked->stat_data);
|
|
strbuf_add(&wd->sb_stat, &stat_data, sizeof(stat_data));
|
|
}
|
|
if (!is_null_sha1(untracked->exclude_sha1)) {
|
|
ewah_set(wd->sha1_valid, i);
|
|
strbuf_add(&wd->sb_sha1, untracked->exclude_sha1, 20);
|
|
}
|
|
|
|
intlen = encode_varint(untracked->untracked_nr, intbuf);
|
|
strbuf_add(out, intbuf, intlen);
|
|
|
|
/* skip non-recurse directories */
|
|
for (i = 0, value = 0; i < untracked->dirs_nr; i++)
|
|
if (untracked->dirs[i]->recurse)
|
|
value++;
|
|
intlen = encode_varint(value, intbuf);
|
|
strbuf_add(out, intbuf, intlen);
|
|
|
|
strbuf_add(out, untracked->name, strlen(untracked->name) + 1);
|
|
|
|
for (i = 0; i < untracked->untracked_nr; i++)
|
|
strbuf_add(out, untracked->untracked[i],
|
|
strlen(untracked->untracked[i]) + 1);
|
|
|
|
for (i = 0; i < untracked->dirs_nr; i++)
|
|
if (untracked->dirs[i]->recurse)
|
|
write_one_dir(untracked->dirs[i], wd);
|
|
}
|
|
|
|
void write_untracked_extension(struct strbuf *out, struct untracked_cache *untracked)
|
|
{
|
|
struct ondisk_untracked_cache *ouc;
|
|
struct write_data wd;
|
|
unsigned char varbuf[16];
|
|
int varint_len;
|
|
size_t len = strlen(untracked->exclude_per_dir);
|
|
|
|
FLEX_ALLOC_MEM(ouc, exclude_per_dir, untracked->exclude_per_dir, len);
|
|
stat_data_to_disk(&ouc->info_exclude_stat, &untracked->ss_info_exclude.stat);
|
|
stat_data_to_disk(&ouc->excludes_file_stat, &untracked->ss_excludes_file.stat);
|
|
hashcpy(ouc->info_exclude_sha1, untracked->ss_info_exclude.oid.hash);
|
|
hashcpy(ouc->excludes_file_sha1, untracked->ss_excludes_file.oid.hash);
|
|
ouc->dir_flags = htonl(untracked->dir_flags);
|
|
|
|
varint_len = encode_varint(untracked->ident.len, varbuf);
|
|
strbuf_add(out, varbuf, varint_len);
|
|
strbuf_addbuf(out, &untracked->ident);
|
|
|
|
strbuf_add(out, ouc, ouc_size(len));
|
|
FREE_AND_NULL(ouc);
|
|
|
|
if (!untracked->root) {
|
|
varint_len = encode_varint(0, varbuf);
|
|
strbuf_add(out, varbuf, varint_len);
|
|
return;
|
|
}
|
|
|
|
wd.index = 0;
|
|
wd.check_only = ewah_new();
|
|
wd.valid = ewah_new();
|
|
wd.sha1_valid = ewah_new();
|
|
strbuf_init(&wd.out, 1024);
|
|
strbuf_init(&wd.sb_stat, 1024);
|
|
strbuf_init(&wd.sb_sha1, 1024);
|
|
write_one_dir(untracked->root, &wd);
|
|
|
|
varint_len = encode_varint(wd.index, varbuf);
|
|
strbuf_add(out, varbuf, varint_len);
|
|
strbuf_addbuf(out, &wd.out);
|
|
ewah_serialize_strbuf(wd.valid, out);
|
|
ewah_serialize_strbuf(wd.check_only, out);
|
|
ewah_serialize_strbuf(wd.sha1_valid, out);
|
|
strbuf_addbuf(out, &wd.sb_stat);
|
|
strbuf_addbuf(out, &wd.sb_sha1);
|
|
strbuf_addch(out, '\0'); /* safe guard for string lists */
|
|
|
|
ewah_free(wd.valid);
|
|
ewah_free(wd.check_only);
|
|
ewah_free(wd.sha1_valid);
|
|
strbuf_release(&wd.out);
|
|
strbuf_release(&wd.sb_stat);
|
|
strbuf_release(&wd.sb_sha1);
|
|
}
|
|
|
|
static void free_untracked(struct untracked_cache_dir *ucd)
|
|
{
|
|
int i;
|
|
if (!ucd)
|
|
return;
|
|
for (i = 0; i < ucd->dirs_nr; i++)
|
|
free_untracked(ucd->dirs[i]);
|
|
for (i = 0; i < ucd->untracked_nr; i++)
|
|
free(ucd->untracked[i]);
|
|
free(ucd->untracked);
|
|
free(ucd->dirs);
|
|
free(ucd);
|
|
}
|
|
|
|
void free_untracked_cache(struct untracked_cache *uc)
|
|
{
|
|
if (uc)
|
|
free_untracked(uc->root);
|
|
free(uc);
|
|
}
|
|
|
|
struct read_data {
|
|
int index;
|
|
struct untracked_cache_dir **ucd;
|
|
struct ewah_bitmap *check_only;
|
|
struct ewah_bitmap *valid;
|
|
struct ewah_bitmap *sha1_valid;
|
|
const unsigned char *data;
|
|
const unsigned char *end;
|
|
};
|
|
|
|
static void stat_data_from_disk(struct stat_data *to, const unsigned char *data)
|
|
{
|
|
memcpy(to, data, sizeof(*to));
|
|
to->sd_ctime.sec = ntohl(to->sd_ctime.sec);
|
|
to->sd_ctime.nsec = ntohl(to->sd_ctime.nsec);
|
|
to->sd_mtime.sec = ntohl(to->sd_mtime.sec);
|
|
to->sd_mtime.nsec = ntohl(to->sd_mtime.nsec);
|
|
to->sd_dev = ntohl(to->sd_dev);
|
|
to->sd_ino = ntohl(to->sd_ino);
|
|
to->sd_uid = ntohl(to->sd_uid);
|
|
to->sd_gid = ntohl(to->sd_gid);
|
|
to->sd_size = ntohl(to->sd_size);
|
|
}
|
|
|
|
static int read_one_dir(struct untracked_cache_dir **untracked_,
|
|
struct read_data *rd)
|
|
{
|
|
struct untracked_cache_dir ud, *untracked;
|
|
const unsigned char *next, *data = rd->data, *end = rd->end;
|
|
unsigned int value;
|
|
int i, len;
|
|
|
|
memset(&ud, 0, sizeof(ud));
|
|
|
|
next = data;
|
|
value = decode_varint(&next);
|
|
if (next > end)
|
|
return -1;
|
|
ud.recurse = 1;
|
|
ud.untracked_alloc = value;
|
|
ud.untracked_nr = value;
|
|
if (ud.untracked_nr)
|
|
ALLOC_ARRAY(ud.untracked, ud.untracked_nr);
|
|
data = next;
|
|
|
|
next = data;
|
|
ud.dirs_alloc = ud.dirs_nr = decode_varint(&next);
|
|
if (next > end)
|
|
return -1;
|
|
ALLOC_ARRAY(ud.dirs, ud.dirs_nr);
|
|
data = next;
|
|
|
|
len = strlen((const char *)data);
|
|
next = data + len + 1;
|
|
if (next > rd->end)
|
|
return -1;
|
|
*untracked_ = untracked = xmalloc(st_add(sizeof(*untracked), len));
|
|
memcpy(untracked, &ud, sizeof(ud));
|
|
memcpy(untracked->name, data, len + 1);
|
|
data = next;
|
|
|
|
for (i = 0; i < untracked->untracked_nr; i++) {
|
|
len = strlen((const char *)data);
|
|
next = data + len + 1;
|
|
if (next > rd->end)
|
|
return -1;
|
|
untracked->untracked[i] = xstrdup((const char*)data);
|
|
data = next;
|
|
}
|
|
|
|
rd->ucd[rd->index++] = untracked;
|
|
rd->data = data;
|
|
|
|
for (i = 0; i < untracked->dirs_nr; i++) {
|
|
len = read_one_dir(untracked->dirs + i, rd);
|
|
if (len < 0)
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void set_check_only(size_t pos, void *cb)
|
|
{
|
|
struct read_data *rd = cb;
|
|
struct untracked_cache_dir *ud = rd->ucd[pos];
|
|
ud->check_only = 1;
|
|
}
|
|
|
|
static void read_stat(size_t pos, void *cb)
|
|
{
|
|
struct read_data *rd = cb;
|
|
struct untracked_cache_dir *ud = rd->ucd[pos];
|
|
if (rd->data + sizeof(struct stat_data) > rd->end) {
|
|
rd->data = rd->end + 1;
|
|
return;
|
|
}
|
|
stat_data_from_disk(&ud->stat_data, rd->data);
|
|
rd->data += sizeof(struct stat_data);
|
|
ud->valid = 1;
|
|
}
|
|
|
|
static void read_sha1(size_t pos, void *cb)
|
|
{
|
|
struct read_data *rd = cb;
|
|
struct untracked_cache_dir *ud = rd->ucd[pos];
|
|
if (rd->data + 20 > rd->end) {
|
|
rd->data = rd->end + 1;
|
|
return;
|
|
}
|
|
hashcpy(ud->exclude_sha1, rd->data);
|
|
rd->data += 20;
|
|
}
|
|
|
|
static void load_oid_stat(struct oid_stat *oid_stat, const unsigned char *data,
|
|
const unsigned char *sha1)
|
|
{
|
|
stat_data_from_disk(&oid_stat->stat, data);
|
|
hashcpy(oid_stat->oid.hash, sha1);
|
|
oid_stat->valid = 1;
|
|
}
|
|
|
|
struct untracked_cache *read_untracked_extension(const void *data, unsigned long sz)
|
|
{
|
|
struct untracked_cache *uc;
|
|
struct read_data rd;
|
|
const unsigned char *next = data, *end = (const unsigned char *)data + sz;
|
|
const char *ident;
|
|
int ident_len, len;
|
|
const char *exclude_per_dir;
|
|
|
|
if (sz <= 1 || end[-1] != '\0')
|
|
return NULL;
|
|
end--;
|
|
|
|
ident_len = decode_varint(&next);
|
|
if (next + ident_len > end)
|
|
return NULL;
|
|
ident = (const char *)next;
|
|
next += ident_len;
|
|
|
|
if (next + ouc_size(0) > end)
|
|
return NULL;
|
|
|
|
uc = xcalloc(1, sizeof(*uc));
|
|
strbuf_init(&uc->ident, ident_len);
|
|
strbuf_add(&uc->ident, ident, ident_len);
|
|
load_oid_stat(&uc->ss_info_exclude,
|
|
next + ouc_offset(info_exclude_stat),
|
|
next + ouc_offset(info_exclude_sha1));
|
|
load_oid_stat(&uc->ss_excludes_file,
|
|
next + ouc_offset(excludes_file_stat),
|
|
next + ouc_offset(excludes_file_sha1));
|
|
uc->dir_flags = get_be32(next + ouc_offset(dir_flags));
|
|
exclude_per_dir = (const char *)next + ouc_offset(exclude_per_dir);
|
|
uc->exclude_per_dir = xstrdup(exclude_per_dir);
|
|
/* NUL after exclude_per_dir is covered by sizeof(*ouc) */
|
|
next += ouc_size(strlen(exclude_per_dir));
|
|
if (next >= end)
|
|
goto done2;
|
|
|
|
len = decode_varint(&next);
|
|
if (next > end || len == 0)
|
|
goto done2;
|
|
|
|
rd.valid = ewah_new();
|
|
rd.check_only = ewah_new();
|
|
rd.sha1_valid = ewah_new();
|
|
rd.data = next;
|
|
rd.end = end;
|
|
rd.index = 0;
|
|
ALLOC_ARRAY(rd.ucd, len);
|
|
|
|
if (read_one_dir(&uc->root, &rd) || rd.index != len)
|
|
goto done;
|
|
|
|
next = rd.data;
|
|
len = ewah_read_mmap(rd.valid, next, end - next);
|
|
if (len < 0)
|
|
goto done;
|
|
|
|
next += len;
|
|
len = ewah_read_mmap(rd.check_only, next, end - next);
|
|
if (len < 0)
|
|
goto done;
|
|
|
|
next += len;
|
|
len = ewah_read_mmap(rd.sha1_valid, next, end - next);
|
|
if (len < 0)
|
|
goto done;
|
|
|
|
ewah_each_bit(rd.check_only, set_check_only, &rd);
|
|
rd.data = next + len;
|
|
ewah_each_bit(rd.valid, read_stat, &rd);
|
|
ewah_each_bit(rd.sha1_valid, read_sha1, &rd);
|
|
next = rd.data;
|
|
|
|
done:
|
|
free(rd.ucd);
|
|
ewah_free(rd.valid);
|
|
ewah_free(rd.check_only);
|
|
ewah_free(rd.sha1_valid);
|
|
done2:
|
|
if (next != end) {
|
|
free_untracked_cache(uc);
|
|
uc = NULL;
|
|
}
|
|
return uc;
|
|
}
|
|
|
|
static void invalidate_one_directory(struct untracked_cache *uc,
|
|
struct untracked_cache_dir *ucd)
|
|
{
|
|
uc->dir_invalidated++;
|
|
ucd->valid = 0;
|
|
ucd->untracked_nr = 0;
|
|
}
|
|
|
|
/*
|
|
* Normally when an entry is added or removed from a directory,
|
|
* invalidating that directory is enough. No need to touch its
|
|
* ancestors. When a directory is shown as "foo/bar/" in git-status
|
|
* however, deleting or adding an entry may have cascading effect.
|
|
*
|
|
* Say the "foo/bar/file" has become untracked, we need to tell the
|
|
* untracked_cache_dir of "foo" that "bar/" is not an untracked
|
|
* directory any more (because "bar" is managed by foo as an untracked
|
|
* "file").
|
|
*
|
|
* Similarly, if "foo/bar/file" moves from untracked to tracked and it
|
|
* was the last untracked entry in the entire "foo", we should show
|
|
* "foo/" instead. Which means we have to invalidate past "bar" up to
|
|
* "foo".
|
|
*
|
|
* This function traverses all directories from root to leaf. If there
|
|
* is a chance of one of the above cases happening, we invalidate back
|
|
* to root. Otherwise we just invalidate the leaf. There may be a more
|
|
* sophisticated way than checking for SHOW_OTHER_DIRECTORIES to
|
|
* detect these cases and avoid unnecessary invalidation, for example,
|
|
* checking for the untracked entry named "bar/" in "foo", but for now
|
|
* stick to something safe and simple.
|
|
*/
|
|
static int invalidate_one_component(struct untracked_cache *uc,
|
|
struct untracked_cache_dir *dir,
|
|
const char *path, int len)
|
|
{
|
|
const char *rest = strchr(path, '/');
|
|
|
|
if (rest) {
|
|
int component_len = rest - path;
|
|
struct untracked_cache_dir *d =
|
|
lookup_untracked(uc, dir, path, component_len);
|
|
int ret =
|
|
invalidate_one_component(uc, d, rest + 1,
|
|
len - (component_len + 1));
|
|
if (ret)
|
|
invalidate_one_directory(uc, dir);
|
|
return ret;
|
|
}
|
|
|
|
invalidate_one_directory(uc, dir);
|
|
return uc->dir_flags & DIR_SHOW_OTHER_DIRECTORIES;
|
|
}
|
|
|
|
void untracked_cache_invalidate_path(struct index_state *istate,
|
|
const char *path)
|
|
{
|
|
if (!istate->untracked || !istate->untracked->root)
|
|
return;
|
|
invalidate_one_component(istate->untracked, istate->untracked->root,
|
|
path, strlen(path));
|
|
}
|
|
|
|
void untracked_cache_remove_from_index(struct index_state *istate,
|
|
const char *path)
|
|
{
|
|
untracked_cache_invalidate_path(istate, path);
|
|
}
|
|
|
|
void untracked_cache_add_to_index(struct index_state *istate,
|
|
const char *path)
|
|
{
|
|
untracked_cache_invalidate_path(istate, path);
|
|
}
|
|
|
|
/* Update gitfile and core.worktree setting to connect work tree and git dir */
|
|
void connect_work_tree_and_git_dir(const char *work_tree_, const char *git_dir_)
|
|
{
|
|
struct strbuf gitfile_sb = STRBUF_INIT;
|
|
struct strbuf cfg_sb = STRBUF_INIT;
|
|
struct strbuf rel_path = STRBUF_INIT;
|
|
char *git_dir, *work_tree;
|
|
|
|
/* Prepare .git file */
|
|
strbuf_addf(&gitfile_sb, "%s/.git", work_tree_);
|
|
if (safe_create_leading_directories_const(gitfile_sb.buf))
|
|
die(_("could not create directories for %s"), gitfile_sb.buf);
|
|
|
|
/* Prepare config file */
|
|
strbuf_addf(&cfg_sb, "%s/config", git_dir_);
|
|
if (safe_create_leading_directories_const(cfg_sb.buf))
|
|
die(_("could not create directories for %s"), cfg_sb.buf);
|
|
|
|
git_dir = real_pathdup(git_dir_, 1);
|
|
work_tree = real_pathdup(work_tree_, 1);
|
|
|
|
/* Write .git file */
|
|
write_file(gitfile_sb.buf, "gitdir: %s",
|
|
relative_path(git_dir, work_tree, &rel_path));
|
|
/* Update core.worktree setting */
|
|
git_config_set_in_file(cfg_sb.buf, "core.worktree",
|
|
relative_path(work_tree, git_dir, &rel_path));
|
|
|
|
strbuf_release(&gitfile_sb);
|
|
strbuf_release(&cfg_sb);
|
|
strbuf_release(&rel_path);
|
|
free(work_tree);
|
|
free(git_dir);
|
|
}
|
|
|
|
/*
|
|
* Migrate the git directory of the given path from old_git_dir to new_git_dir.
|
|
*/
|
|
void relocate_gitdir(const char *path, const char *old_git_dir, const char *new_git_dir)
|
|
{
|
|
if (rename(old_git_dir, new_git_dir) < 0)
|
|
die_errno(_("could not migrate git directory from '%s' to '%s'"),
|
|
old_git_dir, new_git_dir);
|
|
|
|
connect_work_tree_and_git_dir(path, new_git_dir);
|
|
}
|