Function handle_using_dir_name_hash_icase

fsmonitor.c:268–315

* Use the dir-name-hash to find the correct-case spelling of the * directory. Use the canonical spelling to invalidate all of the * cache-entries within the matching cone. * * Returns the number of cache-entries that we invalidated. */

 * Returns the number of cache-entries that we invalidated.
 */
static size_t handle_using_dir_name_hash_icase(
	struct index_state *istate, const char *name)
{
	struct strbuf canonical_path = STRBUF_INIT;
	int pos;
	size_t len = strlen(name);
	size_t nr_in_cone;

	if (name[len - 1] == '/')
		len--;

	if (!index_dir_find(istate, name, len, &canonical_path))
		return 0; /* name is untracked */

	if (!memcmp(name, canonical_path.buf, canonical_path.len)) {
		strbuf_release(&canonical_path);
		/*
		 * NEEDSWORK: Our caller already tried an exact match
		 * and failed to find one.  They called us to do an
		 * ICASE match, so we should never get an exact match,
		 * so we could promote this to a BUG() here if we
		 * wanted to.  It doesn't hurt anything to just return
		 * 0 and go on because we should never get here.  Or we
		 * could just get rid of the memcmp() and this "if"
		 * clause completely.
		 */
		BUG("handle_using_dir_name_hash_icase(%s) did not exact match",
		    name);
	}

	trace_printf_key(&trace_fsmonitor,
			 "fsmonitor_refresh_callback MAP: '%s' '%s'",
			 name, canonical_path.buf);

	/*
	 * The dir-name-hash only tells us the corrected spelling of
	 * the prefix.  We have to use this canonical path to do a
	 * lookup in the cache-entry array so that we repeat the
	 * original search using the case-corrected spelling.
	 */
	strbuf_addch(&canonical_path, '/');
	pos = index_name_pos(istate, canonical_path.buf,
			     canonical_path.len);
	nr_in_cone = handle_path_with_trailing_slash(
		istate, canonical_path.buf, pos);
	strbuf_release(&canonical_path);
	return nr_in_cone;
}

/*
 * The daemon sent an observed pathname without a trailing slash.