Function set_file_attrs

rsync.c:489–682

}

int set_file_attrs(const char *fname, struct file_struct *file, stat_x *sxp,
		   const char *fnamecmp, int flags)
{
	int updated = 0;
	stat_x sx2;
	int change_uid, change_gid;
	mode_t new_mode = file->mode;
	int inherit;

	if (!sxp) {
		if (dry_run)
			return 1;
		if (link_stat(fname, &sx2.st, 0) < 0) {
			rsyserr(FERROR_XFER, errno, "stat %s failed",
				full_fname(fname));
			return 0;
		}
		init_stat_x(&sx2);
		sxp = &sx2;
		inherit = !preserve_perms;
	} else
		inherit = !preserve_perms && file->flags & FLAG_DIR_CREATED;

	if (inherit && S_ISDIR(new_mode) && sxp->st.st_mode & S_ISGID) {
		/* We just created this directory and its setgid
		 * bit is on, so make sure it stays on. */
		new_mode |= S_ISGID;
	}

	if (daemon_chmod_modes && !S_ISLNK(new_mode))
		new_mode = tweak_mode(new_mode, daemon_chmod_modes);

#ifdef SUPPORT_ACLS
	if (preserve_acls && !S_ISLNK(file->mode) && !ACL_READY(*sxp))
		get_acl(fname, sxp);
#endif

	change_uid = am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file);
	change_gid = gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
		  && sxp->st.st_gid != (gid_t)F_GROUP(file);
#ifndef CAN_CHOWN_SYMLINK
	if (S_ISLNK(sxp->st.st_mode)) {
		;
	} else
#endif
	if (change_uid || change_gid) {
		if (DEBUG_GTE(OWN, 1)) {
			if (change_uid) {
				rprintf(FINFO,
					"set uid of %s from %u to %u\n",
					fname, (unsigned)sxp->st.st_uid, F_OWNER(file));
			}
			if (change_gid) {
				rprintf(FINFO,
					"set gid of %s from %u to %u\n",
					fname, (unsigned)sxp->st.st_gid, F_GROUP(file));
			}
		}