diff options
Diffstat (limited to 'winsup/cygwin/dtable.cc')
| -rw-r--r-- | winsup/cygwin/dtable.cc | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/winsup/cygwin/dtable.cc b/winsup/cygwin/dtable.cc index 2076ac998..67f9b4144 100644 --- a/winsup/cygwin/dtable.cc +++ b/winsup/cygwin/dtable.cc @@ -297,7 +297,7 @@ dtable::init_std_file_from_handle (int fd, HANDLE handle) int rcv = 0, len = sizeof (int); if (handle_to_fn (handle, name)) - /* ok */; + dev.parse (name); else if (strcmp (name, ":sock:") == 0 /* On NT4, NtQueryObject returns STATUS_NOT_IMPLEMENTED when called for a socket handle. */ @@ -313,8 +313,6 @@ dtable::init_std_file_from_handle (int fd, HANDLE handle) dev = *piper_dev; else dev = *pipew_dev; - if (name[0]) - access = FILE_CREATE_PIPE_INSTANCE; } else if (GetConsoleScreenBufferInfo (handle, &buf)) { @@ -361,8 +359,22 @@ dtable::init_std_file_from_handle (int fd, HANDLE handle) } } + IO_STATUS_BLOCK io; + FILE_ACCESS_INFORMATION fai; + + /* Console windows are not kernel objects, so the access mask returned + by NtQueryInformationFile is meaningless. */ if (dev == FH_TTY || dev == FH_CONSOLE) access |= GENERIC_READ | GENERIC_WRITE; + else if (NT_SUCCESS (NtQueryInformationFile (handle, &io, &fai, + sizeof fai, + FileAccessInformation))) + { + if (fai.AccessFlags & FILE_READ_DATA) + access |= GENERIC_READ; + if (fai.AccessFlags & FILE_WRITE_DATA) + access |= GENERIC_WRITE; + } else if (fd == 0) access |= GENERIC_READ; else |