diff options
Diffstat (limited to 'winsup/cygwin/syscalls.cc')
| -rw-r--r-- | winsup/cygwin/syscalls.cc | 66 |
1 files changed, 64 insertions, 2 deletions
diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc index 22a5cef17..625d1503f 100644 --- a/winsup/cygwin/syscalls.cc +++ b/winsup/cygwin/syscalls.cc @@ -1428,6 +1428,40 @@ getpagesize () return (int) system_info.dwPageSize; } +static int +check_posix_perm (const char *fname, int v) +{ + extern int allow_ntea, allow_ntsec, allow_smbntsec; + + /* Windows 95/98/ME don't support file system security at all. */ + if (os_being_run != winNT) + return 0; + + /* ntea is ok for supporting permission bits but it doesn't support + full POSIX security settings. */ + if (v == _PC_POSIX_PERMISSIONS && allow_ntea) + return 1; + + if (!allow_ntsec) + return 0; + + char *root = rootdir (strcpy ((char *)alloca (strlen (fname)), fname)); + + if (!allow_smbntsec + && ((root[0] == '\\' && root[1] == '\\') + || GetDriveType (root) == DRIVE_REMOTE)) + return 0; + + DWORD vsn, len, flags; + if (!GetVolumeInformation (root, NULL, 0, &vsn, &len, &flags, NULL, 16)) + { + __seterrno (); + return 0; + } + + return (flags & FS_PERSISTENT_ACLS) ? 1 : 0; +} + /* FIXME: not all values are correct... */ extern "C" long int fpathconf (int fd, int v) @@ -1461,6 +1495,18 @@ fpathconf (int fd, int v) set_errno (EBADF); return -1; } + case _PC_POSIX_PERMISSIONS: + case _PC_POSIX_SECURITY: + if (fdtab.not_open (fd)) + set_errno (EBADF); + else + { + fhandler_base *fh = fdtab[fd]; + if (fh->get_device () == FH_DISK) + return check_posix_perm (fh->get_win32_name (), v); + set_errno (EINVAL); + } + return -1; default: set_errno (EINVAL); return -1; @@ -1480,14 +1526,30 @@ pathconf (const char *file, int v) return _POSIX_LINK_MAX; case _PC_MAX_CANON: case _PC_MAX_INPUT: - return _POSIX_MAX_CANON; + return _POSIX_MAX_CANON; case _PC_PIPE_BUF: return 4096; case _PC_CHOWN_RESTRICTED: case _PC_NO_TRUNC: return -1; case _PC_VDISABLE: - return -1; + return -1; + case _PC_POSIX_PERMISSIONS: + case _PC_POSIX_SECURITY: + { + path_conv full_path (file, PC_SYM_FOLLOW | PC_FULL); + if (full_path.error) + { + set_errno (full_path.error); + return -1; + } + if (full_path.is_device ()) + { + set_errno (EINVAL); + return -1; + } + return check_posix_perm (full_path, v); + } default: set_errno (EINVAL); return -1; |