Check user/group/other permission done. At least in theory (df4a6f99) · Commits · hpc / gekkofs

fs/src/fuse_ops/permission.cpp

+14 −9

Original line number	Diff line number	Diff line
		@@ -12,25 +12,30 @@ int chk_access(const Metadata& md, const int mode) {
		if (fuse_get_context()->uid == 0)
		return 0;

		// mode should be unsigned int. Init here.

		//check user
		//check user leftmost 3 bits for rwx in md->mode
		if (md.uid() == fuse_get_context()->uid) {
		ADAFS_DATA->logger->info("Metadata UID: {}, fuse context uid: {}, mode: {}",
		md.uid(), fuse_get_context()->uid, mode);
		// XXX
		// Because mode comes only with the first 3 bits used, the user bits have to be shifted to the right to compare
		if ((mode & md.mode() >> 6) == (unsigned int) mode)
		return 0;
		else
		return -EACCES;
		}

		//check group
		//check group middle 3 bits for rwx in md->mode
		if (md.gid() == fuse_get_context()->gid) {
		ADAFS_DATA->logger->info("Metadata GID: {}, fuse context gid: {}, mode: {}",
		md.uid(), fuse_get_context()->gid, mode);
		// XXX
		if ((mode & md.mode() >> 3) == (unsigned int) mode)
		return 0;
		else
		return -EACCES;
		}
		//check public
		ADAFS_DATA->logger->info("mode {}, mdi mode: {}, mdi & mode {}", mode, (int) md.mode(), (mode & md.mode()));

		if ((mode & (int) md.mode()) == mode) {
		//check other rightmost 3 bits for rwx in md->mode.
		// Because they are the rightmost bits they don't need to be shifted
		if ((mode & md.mode()) == (unsigned int) mode) {
		return 0;
		}