* fhandler.cc (fhandler_base::open): Set win32 access flags

to 0, when requested.
* fhandler.h: New status flag FH_QUERYOPEN.
(fhandler::get_query_open): New function.
(fhandler::set_query_open): Ditto.
* syscalls.cc (stat_worker): Request query-only open mode.

4 files changed, 40 insertions, 21 deletions

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 66c813731..e23c2d8db 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,12 @@
+2001-06-14  Egor Duda  <deo@logos-m.ru>
+
+	* fhandler.cc (fhandler_base::open): Set win32 access flags
+	to 0, when requested.
+	* fhandler.h: New status flag FH_QUERYOPEN.
+	(fhandler::get_query_open): New function.
+	(fhandler::set_query_open): Ditto.
+	* syscalls.cc (stat_worker): Request query-only open mode.
+
 2001-06-12  Egor Duda  <deo@logos-m.ru>
 
 	* environ.cc (set_file_api_mode): New function. Move setting
diff --git a/winsup/cygwin/fhandler.cc b/winsup/cygwin/fhandler.cc
index 5c613bccd..973a1c19b 100644
--- a/winsup/cygwin/fhandler.cc
+++ b/winsup/cygwin/fhandler.cc
@@ -308,7 +308,11 @@ fhandler_base::open (int flags, mode_t mode)
       goto done;
     }
 
-  if (get_device () == FH_TAPE)
+  if (get_query_open ())
+    {
+      access = 0;
+    }
+  else if (get_device () == FH_TAPE)
     {
       access = GENERIC_READ | GENERIC_WRITE;
     }
diff --git a/winsup/cygwin/fhandler.h b/winsup/cygwin/fhandler.h
index 6f193c385..856d3d632 100644
--- a/winsup/cygwin/fhandler.h
+++ b/winsup/cygwin/fhandler.h
@@ -50,30 +50,32 @@ details. */
 
 enum
 {
-  FH_RBINARY = 0x00001000,	/* binary read mode */
-  FH_WBINARY = 0x00002000,	/* binary write mode */
-  FH_CLOEXEC = 0x00004000,	/* close-on-exec */
-  FH_RBINSET = 0x00008000,	/* binary read mode has been explicitly set */
-  FH_WBINSET = 0x00010000,	/* binary write mode has been explicitly set */
-  FH_APPEND  = 0x00020000,	/* always append */
-  FH_ASYNC   = 0x00040000,	/* async I/O */
-  FH_HADEOF  = 0x00080000,	/* EOF seen */
-
-  FH_SYMLINK = 0x00100000,	/* is a symlink */
-  FH_EXECABL = 0x00200000,	/* file looked like it would run:
+  FH_RBINARY	= 0x00001000,	/* binary read mode */
+  FH_WBINARY	= 0x00002000,	/* binary write mode */
+  FH_CLOEXEC	= 0x00004000,	/* close-on-exec */
+  FH_RBINSET	= 0x00008000,	/* binary read mode has been explicitly set */
+  FH_WBINSET	= 0x00010000,	/* binary write mode has been explicitly set */
+  FH_APPEND	= 0x00020000,	/* always append */
+  FH_ASYNC	= 0x00040000,	/* async I/O */
+  FH_HADEOF	= 0x00080000,	/* EOF seen */
+
+  FH_SYMLINK	= 0x00100000,	/* is a symlink */
+  FH_EXECABL	= 0x00200000,	/* file looked like it would run:
 				 * ends in .exe or .bat or begins with #! */
-  FH_W95LSBUG= 0x00400000,	/* set when lseek is called as a flag that
+  FH_W95LSBUG	= 0x00400000,	/* set when lseek is called as a flag that
 				 * _write should check if we've moved beyond
 				 * EOF, zero filling if so. */
-  FH_NOFRNAME= 0x00800000,	/* Set if shouldn't free unix_path_name and
+  FH_NOFRNAME	= 0x00800000,	/* Set if shouldn't free unix_path_name and
 				   windows_path_name_ on destruction. */
-  FH_NOEINTR = 0x01000000,	/* Set if I/O should be uninterruptible. */
-  FH_FFIXUP  = 0x02000000,	/* Set if need to fixup after fork. */
-  FH_LOCAL   = 0x04000000,	/* File is unix domain socket */
-  FH_FIFO    = 0x08000000,	/* File is FIFO */
-  FH_ISREMOTE= 0x10000000,	/* File is on a remote drive */
-  FH_DCEXEC  = 0x20000000,	/* Don't care if this is executable */
-  FH_HASACLS = 0x40000000,	/* True if fs of file has ACLS */
+  FH_NOEINTR	= 0x01000000,	/* Set if I/O should be uninterruptible. */
+  FH_FFIXUP	= 0x02000000,	/* Set if need to fixup after fork. */
+  FH_LOCAL	= 0x04000000,	/* File is unix domain socket */
+  FH_FIFO	= 0x08000000,	/* File is FIFO */
+  FH_ISREMOTE	= 0x10000000,	/* File is on a remote drive */
+  FH_DCEXEC	= 0x20000000,	/* Don't care if this is executable */
+  FH_HASACLS	= 0x40000000,	/* True if fs of file has ACLS */
+  FH_QUERYOPEN	= 0x80000000,	/* open file without requesting either read
+				   or write access */
 
   /* Device flags */
 
@@ -252,6 +254,9 @@ public:
   void set_append_p (int val) { FHCONDSETF (val, APPEND); }
   void set_append_p () { FHSETF (APPEND); }
 
+  int get_query_open () { return FHISSETF (QUERYOPEN); }
+  void set_query_open (int val) { FHCONDSETF (val, QUERYOPEN); }
+
   int get_readahead_valid () { return raixget < ralen; }
   int puts_readahead (const char *s, size_t len = (size_t) -1);
   int put_readahead (char value);
diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc
index e6e48f3fc..4e96ccc1e 100644
--- a/winsup/cygwin/syscalls.cc
+++ b/winsup/cygwin/syscalls.cc
@@ -1048,6 +1048,7 @@ stat_worker (const char *caller, const char *name, struct stat *buf,
 	&& dtype != DRIVE_NO_ROOT_DIR
 	&& dtype != DRIVE_UNKNOWN)))
     {
+      fh.set_query_open (TRUE);
       oret = fh.open (real_path, O_RDONLY | O_BINARY | O_DIROPEN |
 				 (nofollow ? O_NOSYMLINK : 0), 0);
       /* Check a special case here. If ntsec is ON it happens