122 #   define UMOUNT "do-not-use-this-value"
136 /// \return -1 to indicate error, although this should never happen.
142     return -1;  in unmount()
154 /// Executes 'mount -t tmpfs' (or a similar variant).
170         mount_args[last++] = "-ttmpfs";  in run_mount_tmpfs()
172             size_arg = F("-osize=%s") % size;  in run_mount_tmpfs()
181         mount_args[last++] = "-ttmpfs";  in run_mount_tmpfs()
183             size_arg = F("-osize=%s") % size;  in run_mount_tmpfs()
192         mount_args[last++] = "-ttmpfs";  in run_mount_tmpfs()
194             size_arg = F("-o-s%s") % size;  in run_mount_tmpfs()
203         mount_args[last++] = "-Ftmpfs";  in run_mount_tmpfs()
205             size_arg = F("-o-s%s") % size;  in run_mount_tmpfs()
227     INV(ret == -1);  in run_mount_tmpfs()
228     std::cerr << "Failed to exec " << mount_args[0] << "\n";  in run_mount_tmpfs()
245     if (::unmount(mount_point.c_str(), 0) == -1) {  in unmount_with_unmount2()
266     if (pid == -1) {  in unmount_with_umount8()
272         INV(ret == -1);  in unmount_with_umount8()
273         std::cerr << "Failed to exec " UMOUNT "\n";  in unmount_with_umount8()
279     if (::waitpid(pid, &status, 0) == -1) {  in unmount_with_umount8()
310     if (::lstat(path.c_str(), &sb) == -1) {  in safe_stat()
430 /// \return The amount of free space usable by a non-root user.
438     if (::statvfs(path.c_str(), &buf) == -1) {  in free_disk_space()
446     if (::statfs(path.c_str(), &buf) == -1) {  in free_disk_space()
478     if (::mkdir(dir.c_str(), static_cast< mode_t >(mode)) == -1) {  in mkdir()
517 /// and thus should not be used to protect data that may be subject to snooping.
523 /// - Allow the unprivileged code to write to files in the work directory by
528 /// - Allow the test cases themselves to call getcwd(3) at any point.  At least
536 /// bookkeeping for no real gain, because we are not really trying to protect
564     if (::chmod(path.c_str(), 0755) == -1) {  in mkdtemp_public()
573             LW(F("Failed to delete just-created temporary directory %s")  in mkdtemp_public()
608     if (::mkstemp(buf.get()) == -1) {  in mkstemp()
648     if (pid == -1) {  in mount_tmpfs()
658     if (::waitpid(pid, &status, 0) == -1) {  in mount_tmpfs()
684 /// This operation simulates a "rm -r".  No effort is made to forcibly delete
698         if (iter->name == "." || iter->name == "..")  in rm_r()
701         const fs::path entry = directory / iter->name;  in rm_r()
726     if (::rmdir(file.c_str()) == -1) {  in rmdir()
764     if (::unlink(file.c_str()) == -1) {  in unlink()
799             retries--;  in unmount()