diff options
Diffstat (limited to 'libcxx/src/experimental/filesystem')
| -rw-r--r-- | libcxx/src/experimental/filesystem/operations.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/libcxx/src/experimental/filesystem/operations.cpp b/libcxx/src/experimental/filesystem/operations.cpp index 9bfba71fce7..4e7b233e6ce 100644 --- a/libcxx/src/experimental/filesystem/operations.cpp +++ b/libcxx/src/experimental/filesystem/operations.cpp @@ -594,7 +594,7 @@ void __last_write_time(const path& p, file_time_type new_time, void __permissions(const path& p, perms prms, std::error_code *ec) { - const bool resolve_symlinks = bool(perms::resolve_symlinks & prms); + const bool resolve_symlinks = !bool(perms::symlink_nofollow & prms); const bool add_perms = bool(perms::add_perms & prms); const bool remove_perms = bool(perms::remove_perms & prms); @@ -605,6 +605,8 @@ void __permissions(const path& p, perms prms, std::error_code *ec) file_status st = detail::posix_lstat(p, &m_ec); if (m_ec) return set_or_throw(m_ec, ec, "permissions", p); + // AT_SYMLINK_NOFOLLOW can only be used on symlinks, using it on a regular + // file will cause fchmodat to report an error on some systems. const bool set_sym_perms = is_symlink(st) && !resolve_symlinks; if ((resolve_symlinks && is_symlink(st)) && (add_perms || remove_perms)) { @@ -622,14 +624,16 @@ void __permissions(const path& p, perms prms, std::error_code *ec) # if defined(AT_SYMLINK_NOFOLLOW) && defined(AT_FDCWD) const int flags = set_sym_perms ? AT_SYMLINK_NOFOLLOW : 0; if (::fchmodat(AT_FDCWD, p.c_str(), real_perms, flags) == -1) { + return set_or_throw(ec, "permissions", p); + } # else if (set_sym_perms) return set_or_throw(make_error_code(errc::operation_not_supported), ec, "permissions", p); if (::chmod(p.c_str(), real_perms) == -1) { -# endif return set_or_throw(ec, "permissions", p); } +# endif if (ec) ec->clear(); } |
