* cygheap.h (init_cygheap): Move bucket array here from cygheap.cc.

* cygheap.cc: Throughout use bucket array from cygheap.
* sigproc.cc (proc_subproc): Dynamically allocate zombie buffer to save DLL
space.
(sigproc_fixup_after_fork): Free zombie array after a fork.
* sigproc.h (sigproc_fixup_after_fork): Declare.
* dir.cc (mkdir): Expand buffer for security descriptor to 4K to avoid stack
corruption.
* fhandler.cc (fhandler_base::open): Ditto.
* path.cc (symlink): Ditto.

11 files changed, 49 insertions, 18 deletions

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 43e9ff4..d256cc2 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,20 @@
+Wed Sep  5 23:36:03 2001  Christopher Faylor <cgf@cygnus.com>
+
+	* cygheap.h (init_cygheap): Move bucket array here from cygheap.cc.
+	* cygheap.cc: Throughout use bucket array from cygheap.
+
+	* sigproc.cc (proc_subproc): Dynamically allocate zombie buffer to save
+	DLL space.
+	(sigproc_fixup_after_fork): Free zombie array after a fork.
+	* sigproc.h (sigproc_fixup_after_fork): Declare.
+
+2001-09-06  Egor Duda  <deo@logos-m.ru>
+
+	* dir.cc (mkdir): Expand buffer for security descriptor to 4K to avoid
+	stack corruption.
+	* fhandler.cc (fhandler_base::open): Ditto.
+	* path.cc (symlink): Ditto.
+
 Wed Sep  5 21:35:00 2001  Corinna Vinschen <corinna@vinschen.de>
 
 	* winver.rc: Change copyright to include 2001.
diff --git a/winsup/cygwin/cygheap.cc b/winsup/cygwin/cygheap.cc
index 94d0dc0..8c45b1b 100644
--- a/winsup/cygwin/cygheap.cc
+++ b/winsup/cygwin/cygheap.cc
@@ -35,9 +35,7 @@ struct cygheap_entry
     char data[0];
   };
 
-#define NBUCKETS 32
-static char *buckets[NBUCKETS] = {0};
-
+#define NBUCKETS (sizeof (cygheap->buckets) / sizeof (cygheap->buckets[0]))
 #define N0 ((_cmalloc_entry *) NULL)
 #define to_cmalloc(s) ((_cmalloc_entry *) (((char *) (s)) - (int) (N0->data)))
 
@@ -202,10 +200,10 @@ _cmalloc (int size)
     continue;
 
   cygheap_protect->acquire ();
-  if (buckets[b])
+  if (cygheap->buckets[b])
     {
-      rvc = (_cmalloc_entry *) buckets[b];
-      buckets[b] = rvc->ptr;
+      rvc = (_cmalloc_entry *) cygheap->buckets[b];
+      cygheap->buckets[b] = rvc->ptr;
       rvc->b = b;
     }
   else
@@ -227,8 +225,8 @@ _cfree (void *ptr)
   cygheap_protect->acquire ();
   _cmalloc_entry *rvc = to_cmalloc (ptr);
   DWORD b = rvc->b;
-  rvc->ptr = buckets[b];
-  buckets[b] = (char *) rvc;
+  rvc->ptr = cygheap->buckets[b];
+  cygheap->buckets[b] = (char *) rvc;
   cygheap_protect->release ();
 }
 
diff --git a/winsup/cygwin/cygheap.h b/winsup/cygwin/cygheap.h
index 5a3aeac..5b385f5 100644
--- a/winsup/cygwin/cygheap.h
+++ b/winsup/cygwin/cygheap.h
@@ -152,6 +152,7 @@ struct cwdstuff
 struct init_cygheap
 {
   _cmalloc_entry *chain;
+  char *buckets[32];
   cygheap_root root;
   cygheap_user user;
   mode_t umask;
diff --git a/winsup/cygwin/dir.cc b/winsup/cygwin/dir.cc
index 9d21cdc..f716f23 100644
--- a/winsup/cygwin/dir.cc
+++ b/winsup/cygwin/dir.cc
@@ -339,7 +339,7 @@ mkdir (const char *dir, mode_t mode)
 
   if (allow_ntsec && real_dir.has_acls ())
     set_security_attribute (S_IFDIR | ((mode & 07777) & ~cygheap->umask),
-			    &sa, alloca (256), 256);
+			    &sa, alloca (4096), 4096);
 
   if (CreateDirectoryA (real_dir.get_win32 (), &sa))
     {
diff --git a/winsup/cygwin/fhandler.cc b/winsup/cygwin/fhandler.cc
index 4060a38..115a4c7 100644
--- a/winsup/cygwin/fhandler.cc
+++ b/winsup/cygwin/fhandler.cc
@@ -387,7 +387,7 @@ fhandler_base::open (int flags, mode_t mode)
   /* If the file should actually be created and ntsec is on,
      set files attributes. */
   if (flags & O_CREAT && get_device () == FH_DISK && allow_ntsec && has_acls ())
-    set_security_attribute (mode, &sa, alloca (256), 256);
+    set_security_attribute (mode, &sa, alloca (4096), 4096);
 
   x = CreateFileA (get_win32_name (), access, shared,
 		   &sa, creation_distribution,
diff --git a/winsup/cygwin/fork.cc b/winsup/cygwin/fork.cc
index 834c356..173c02b 100644
--- a/winsup/cygwin/fork.cc
+++ b/winsup/cygwin/fork.cc
@@ -279,6 +279,7 @@ fork_child (HANDLE& hParent, dll *&first_dll, bool& load_dlls)
   debug_fixup_after_fork ();
   pinfo_fixup_after_fork ();
   cygheap->fdtab.fixup_after_fork (hParent);
+  sigproc_fixup_after_fork ();
   signal_fixup_after_fork ();
 
   MALLOC_CHECK;
diff --git a/winsup/cygwin/passwd.cc b/winsup/cygwin/passwd.cc
index f7b0853..4fe7166 100644
--- a/winsup/cygwin/passwd.cc
+++ b/winsup/cygwin/passwd.cc
@@ -27,9 +27,9 @@ details. */
 /* Read /etc/passwd only once for better performance.  This is done
    on the first call that needs information from it. */
 
-static struct passwd *passwd_buf = NULL;	/* passwd contents in memory */
-static int curr_lines = 0;
-static int max_lines = 0;
+static struct passwd *passwd_buf;	/* passwd contents in memory */
+static int curr_lines;
+static int max_lines;
 
 /* Set to loaded when /etc/passwd has been read in by read_etc_passwd ().
    Set to emulated if passwd is emulated. */
diff --git a/winsup/cygwin/path.cc b/winsup/cygwin/path.cc
index 25d2174..7e32ae8 100644
--- a/winsup/cygwin/path.cc
+++ b/winsup/cygwin/path.cc
@@ -2461,7 +2461,7 @@ symlink (const char *topath, const char *frompath)
 
   if (allow_ntsec && win32_path.has_acls ())
     set_security_attribute (S_IFLNK | S_IRWXU | S_IRWXG | S_IRWXO,
-			    &sa, alloca (256), 256);
+			    &sa, alloca (4096), 4096);
 
   h = CreateFileA(win32_path, GENERIC_WRITE, 0, &sa,
 		  CREATE_NEW, FILE_ATTRIBUTE_NORMAL, 0);
diff --git a/winsup/cygwin/security.cc b/winsup/cygwin/security.cc
index 24501fa..f208ebe 100644
--- a/winsup/cygwin/security.cc
+++ b/winsup/cygwin/security.cc
@@ -44,7 +44,7 @@ details. */
 
 
 extern BOOL allow_ntea;
-BOOL allow_ntsec = FALSE;
+BOOL allow_ntsec;
 /* allow_smbntsec is handled exclusively in path.cc (path_conv::check).
    It's defined here because of it's strong relationship to allow_ntsec.
    The default is TRUE to reflect the old behaviour. */
diff --git a/winsup/cygwin/sigproc.cc b/winsup/cygwin/sigproc.cc
index 768d6f1..b3c69ff 100644
--- a/winsup/cygwin/sigproc.cc
+++ b/winsup/cygwin/sigproc.cc
@@ -46,7 +46,7 @@ details. */
 
 #define no_signals_available() (!hwait_sig || !sig_loop_wait)
 
-#define ZOMBIEMAX	((int) (sizeof (zombies) / sizeof (zombies[0])) - 1)
+#define ZOMBIEMAX	4096
 
 /*
  * Global variables
@@ -102,9 +102,9 @@ Static HANDLE wait_sig_inited = NULL;	// Control synchronization of
 Static HANDLE events[PSIZE + 1] = {0};	// All my children's handles++
 #define hchildren (events + 1)		// Where the children handles begin
 Static pinfo pchildren[PSIZE];		// All my children info
-Static pinfo zombies[16384];		// All my deceased children info
 Static int nchildren = 0;		// Number of active children
-Static int nzombies = 0;		// Number of deceased children
+static pinfo *zombies;			// All my deceased children info
+static int nzombies;			// Number of deceased children
 
 Static waitq waitq_head = {0, 0, 0, 0, 0, 0, 0};// Start of queue for wait'ing threads
 Static waitq waitq_main;		// Storage for main thread
@@ -303,6 +303,8 @@ proc_subproc (DWORD what, DWORD val)
 
       int thiszombie;
       thiszombie = nzombies;
+      if (!zombies)
+	zombies = (pinfo *) malloc (sizeof (pinfo) * ZOMBIEMAX);
       zombies[nzombies] = pchildren[val];	// Add to zombie array
       zombies[nzombies++]->process_state = PID_ZOMBIE;// Walking dead
 
@@ -1302,6 +1304,17 @@ wait_subproc (VOID *)
   return 0;
 }
 
+void __stdcall
+sigproc_fixup_after_fork ()
+{
+  if (zombies)
+    {
+      free (zombies);
+      nzombies = 0;
+      zombies = NULL;
+    }
+}
+
 extern "C" {
 /* Provide a stack frame when calling WaitFor* functions */
 
diff --git a/winsup/cygwin/sigproc.h b/winsup/cygwin/sigproc.h
index 5726a45..c9b5cad 100644
--- a/winsup/cygwin/sigproc.h
+++ b/winsup/cygwin/sigproc.h
@@ -115,6 +115,7 @@ int __stdcall sig_send (_pinfo *, int, DWORD ebp = (DWORD) __builtin_frame_addre
 			bool exception = 0)  __attribute__ ((regparm(3)));
 void __stdcall signal_fixup_after_fork ();
 void __stdcall signal_fixup_after_exec (bool);
+void __stdcall sigproc_fixup_after_fork ();
 
 extern char myself_nowait_dummy[];
 extern char myself_nowait_nonmain_dummy[];