* cygheap.h (init_cygheap): New struct holding values that live in the Cygwin

heap.
* child_info.h (child_info): Change pointer type of cygheap to init_cygheap.
* cygheap.cc (init_cheap): Point cygheap_max after contents of cygheap.  Move
some stuff into cygheap.h.
* dir.cc (opendir): Change to use root and rootlen in cygheap rather than in
myself.
(mkdir): Change to use umask in cygheap rather than in myself.
* path.cc: Ditto, throughout.
* syscalls.cc (_open): Ditto.  Change to use umask in cygheap rather than in
myself.
(chroot): Change to allocate root dir on the cygwin heap.
(umask): Change to use umask in cygheap rather than in myself.
(cygwin_bind): Ditto.
* sigproc.cc (proc_subproc): Don't copy umask or root stuff as this happens
automatically now.
* pinfo.h (_pinfo): Migrate stuff out of here and into init_cheap.
* dcrt0.cc (dll_crt0_1): Call cygheap_init later in startup for first cygwin
process.

12 files changed, 122 insertions, 87 deletions

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 8e137c9..ba20476 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,26 @@
+Tue Nov 14 00:51:28 2000  Christopher Faylor <cgf@cygnus.com>
+
+	* cygheap.h (init_cygheap): New struct holding values that live in the
+	Cygwin heap.
+	* child_info.h (child_info): Change pointer type of cygheap to
+	init_cygheap.
+	* cygheap.cc (init_cheap): Point cygheap_max after contents of cygheap.
+	Move some stuff into cygheap.h.
+	* dir.cc (opendir): Change to use root and rootlen in cygheap rather
+	than in myself.
+	(mkdir): Change to use umask in cygheap rather than in myself.
+	* path.cc: Ditto, throughout.
+	* syscalls.cc (_open): Ditto.  Change to use umask in cygheap rather
+	than in myself.
+	(chroot): Change to allocate root dir on the cygwin heap.
+	(umask): Change to use umask in cygheap rather than in myself.
+	(cygwin_bind): Ditto.
+	* sigproc.cc (proc_subproc): Don't copy umask or root stuff as this
+	happens automatically now.
+	* pinfo.h (_pinfo): Migrate stuff out of here and into init_cheap.
+	* dcrt0.cc (dll_crt0_1): Call cygheap_init later in startup for first
+	cygwin process.
+
 Sun Nov 12 23:01:35 2000  Christopher Faylor <cgf@cygnus.com>
 
 	* path.cc (get_device_number): Allow /dev/ttySn to designate a com
diff --git a/winsup/cygwin/child_info.h b/winsup/cygwin/child_info.h
index 9249247..120e1fc 100644
--- a/winsup/cygwin/child_info.h
+++ b/winsup/cygwin/child_info.h
@@ -39,7 +39,7 @@ public:
   HANDLE parent_alive;	// handle of thread used to track children
   HANDLE parent;
   HANDLE pppid_handle;
-  void *cygheap;
+  init_cygheap *cygheap;
   void *cygheap_max;
 };
 
diff --git a/winsup/cygwin/cygheap.cc b/winsup/cygwin/cygheap.cc
index c6503c4..15c2667 100644
--- a/winsup/cygwin/cygheap.cc
+++ b/winsup/cygwin/cygheap.cc
@@ -18,24 +18,18 @@
 #include "cygerrno.h"
 #include "sync.h"
 
-void NO_COPY *cygheap = NULL;
+init_cygheap NO_COPY *cygheap;
 void NO_COPY *cygheap_max = NULL;
 
 static NO_COPY muto *cygheap_protect = NULL;
 
-extern "C" void __stdcall
-cygheap_init ()
-{
-  cygheap_protect = new_muto (FALSE, "cygheap_protect");
-}
-
 inline static void
 init_cheap ()
 {
-  cygheap = VirtualAlloc (NULL, CYGHEAPSIZE, MEM_RESERVE, PAGE_NOACCESS);
+  cygheap = (init_cygheap *) VirtualAlloc (NULL, CYGHEAPSIZE, MEM_RESERVE, PAGE_NOACCESS);
   if (!cygheap)
     api_fatal ("Couldn't reserve space for cygwin's heap, %E");
-  cygheap_max = (((char **) cygheap) + 1);
+  cygheap_max = cygheap + 1;
 }
 
 #define pagetrunc(x) ((void *) (((DWORD) (x)) & ~(4096 - 1)))
@@ -60,32 +54,26 @@ _csbrk (int sbs)
 
   if (!needalloc)
     needalloc = sbs && ((heapalign == lastheap) || heapalign != pagetrunc (cygheap_max));
-  if (needalloc && !VirtualAlloc (lastheap, (DWORD) sbs, MEM_COMMIT, PAGE_READWRITE))
+  if (needalloc && !VirtualAlloc (lastheap, (DWORD) sbs ?: 1, MEM_COMMIT, PAGE_READWRITE))
     api_fatal ("couldn't commit memory for cygwin heap, %E");
 
   return lastheap;
 }
 
+extern "C" void __stdcall
+cygheap_init ()
+{
+  cygheap_protect = new_muto (FALSE, "cygheap_protect");
+  _csbrk (0);
+}
+
 /* Copyright (C) 1997, 2000 DJ Delorie */
 
 #define NBUCKETS 32
 char *buckets[NBUCKETS] = {0};
 
-struct _cmalloc_entry
-{
-  union
-  {
-    DWORD b;
-    char *ptr;
-  };
-  struct _cmalloc_entry *prev;
-  char data[0];
-};
-
-
 #define N0 ((_cmalloc_entry *) NULL)
 #define to_cmalloc(s) ((_cmalloc_entry *) (((char *) (s)) - (int) (N0->data)))
-#define cygheap_chain ((_cmalloc_entry **)cygheap)
 
 static void *_cmalloc (int size) __attribute ((regparm(1)));
 static void *__stdcall _crealloc (void *ptr, int size) __attribute ((regparm(2)));
@@ -113,8 +101,8 @@ _cmalloc (int size)
       rvc = (_cmalloc_entry *) _csbrk (size);
 
       rvc->b = b;
-      rvc->prev = *cygheap_chain;
-      *cygheap_chain = rvc;
+      rvc->prev = cygheap->chain;
+      cygheap->chain = rvc;
     }
   cygheap_protect->release ();
   return rvc->data;
@@ -172,7 +160,7 @@ cygheap_fixup_in_child (HANDLE parent, bool execed)
 
   /* Reserve cygwin heap in same spot as parent */
   if (!VirtualAlloc (cygheap, CYGHEAPSIZE, MEM_RESERVE, PAGE_NOACCESS))
-    api_fatal ("Couldn't reserve space for cygwin's heap in child, %E");
+    api_fatal ("Couldn't reserve space for cygwin's heap (%p) in child, cygheap, %E", cygheap);
 
   /* Allocate same amount of memory as parent */
   if (!VirtualAlloc (cygheap, n, MEM_COMMIT, PAGE_READWRITE))
@@ -185,20 +173,22 @@ cygheap_fixup_in_child (HANDLE parent, bool execed)
     api_fatal ("Couldn't read parent's cygwin heap %d bytes != %d, %E",
 	       n, m);
 
-  if (!execed)
-    return;		/* Forked.  Nothing extra to do. */
+  cygheap_init ();
 
-  /* Walk the allocated memory chain looking for orphaned memory from
-     previous execs */
-  for (_cmalloc_entry *rvc = *cygheap_chain; rvc; rvc = rvc->prev)
+  if (execed)
     {
-      cygheap_entry *ce = (cygheap_entry *) rvc->data;
-      if (rvc->b >= NBUCKETS || ce->type <= HEAP_1_START)
-	continue;
-      else if (ce->type < HEAP_1_MAX)
-	ce->type += HEAP_1_MAX;	/* Mark for freeing after next exec */
-      else
-	_cfree (ce);		/* Marked by parent for freeing in child */
+      /* Walk the allocated memory chain looking for orphaned memory from
+	 previous execs */
+      for (_cmalloc_entry *rvc = cygheap->chain; rvc; rvc = rvc->prev)
+	{
+	  cygheap_entry *ce = (cygheap_entry *) rvc->data;
+	  if (rvc->b >= NBUCKETS || ce->type <= HEAP_1_START)
+	    continue;
+	  else if (ce->type < HEAP_1_MAX)
+	    ce->type += HEAP_1_MAX;	/* Mark for freeing after next exec */
+	  else
+	    _cfree (ce);		/* Marked by parent for freeing in child */
+	}
     }
 }
 
diff --git a/winsup/cygwin/cygheap.h b/winsup/cygwin/cygheap.h
index 8ed3aa3..faa50bf 100644
--- a/winsup/cygwin/cygheap.h
+++ b/winsup/cygwin/cygheap.h
@@ -24,13 +24,36 @@ enum cygheap_types
   HEAP_1_MAX = 100
 };
 
-#define CYGHEAPSIZE ((2000 * sizeof (fhandler_union)) + (2 * 65536))
-
-extern HANDLE cygheap;
-extern HANDLE cygheap_max;
+#define CYGHEAPSIZE ((4000 * sizeof (fhandler_union)) + (2 * 65536))
 
 #define incygheap(s) (cygheap && ((char *) (s) >= (char *) cygheap) && ((char *) (s) <= ((char *) cygheap_max)))
 
+struct _cmalloc_entry
+{
+  union
+  {
+    DWORD b;
+    char *ptr;
+  };
+  struct _cmalloc_entry *prev;
+  char data[0];
+};
+
+
+struct init_cygheap
+{
+  _cmalloc_entry *chain;
+  struct
+  {
+    size_t rootlen;
+    char *root;
+  };
+  mode_t umask;
+};
+
+extern init_cygheap *cygheap;
+extern void *cygheap_max;
+
 extern "C" {
 void __stdcall cfree (void *) __attribute__ ((regparm(1)));
 void __stdcall cygheap_fixup_in_child (HANDLE, bool);
diff --git a/winsup/cygwin/dcrt0.cc b/winsup/cygwin/dcrt0.cc
index 8682685..7f75eca 100644
--- a/winsup/cygwin/dcrt0.cc
+++ b/winsup/cygwin/dcrt0.cc
@@ -654,7 +654,6 @@ dll_crt0_1 ()
 
   threadname_init ();
   debug_init ();
-  cygheap_init ();	/* Initialize cygheap muto */
 
   regthread ("main", GetCurrentThreadId ());
   mainthread.init ("mainthread"); // For use in determining if signals
@@ -734,6 +733,9 @@ dll_crt0_1 ()
   /* Initialize events. */
   events_init ();
 
+  if (!child_proc_info)
+    cygheap_init ();
+
   cygcwd.init ();
 
   cygbench ("pre-forkee");
@@ -861,14 +863,6 @@ dll_crt0_1 ()
 extern "C" void __stdcall
 _dll_crt0 ()
 {
-  char zeros[sizeof (fork_info->zero)] = {0};
-#ifdef DEBUGGING
-  strace.microseconds ();
-#endif
-
-  /* Set the os_being_run global. */
-  set_os_type ();
-
 #ifdef DEBUGGING
   char buf[80];
   if (GetEnvironmentVariable ("CYGWIN_SLEEP", buf, sizeof (buf)))
@@ -878,7 +872,16 @@ _dll_crt0 ()
     }
 #endif
 
+  char zeros[sizeof (fork_info->zero)] = {0};
+#ifdef DEBUGGING
+  strace.microseconds ();
+#endif
+
+  /* Set the os_being_run global. */
+  set_os_type ();
+
   main_environ = user_data->envptr;
+  *main_environ = NULL;
   user_data->heapbase = user_data->heapptr = user_data->heaptop = NULL;
 
   set_console_handler ();
diff --git a/winsup/cygwin/dir.cc b/winsup/cygwin/dir.cc
index d2b8bfe..b510e22 100644
--- a/winsup/cygwin/dir.cc
+++ b/winsup/cygwin/dir.cc
@@ -24,6 +24,7 @@ details. */
 #include "fhandler.h"
 #include "path.h"
 #include "security.h"
+#include "cygheap.h"
 
 /* Cygwin internal */
 /* Return whether the directory of a file is writable.  Return 1 if it
@@ -75,7 +76,7 @@ opendir (const char *dirname)
       goto failed;
     }
 
-  if (stat (myself->rootlen ? dirname : real_dirname.get_win32 (),
+  if (stat (cygheap->rootlen ? dirname : real_dirname.get_win32 (),
 	    &statbuf) == -1)
     goto failed;
 
@@ -298,7 +299,7 @@ mkdir (const char *dir, mode_t mode)
   if (CreateDirectoryA (real_dir.get_win32 (), 0))
     {
       set_file_attribute (real_dir.has_acls (), real_dir.get_win32 (),
-			  S_IFDIR | ((mode & 0777) & ~myself->umask));
+			  S_IFDIR | ((mode & 0777) & ~cygheap->umask));
       res = 0;
     }
   else
diff --git a/winsup/cygwin/external.cc b/winsup/cygwin/external.cc
index cf026eb..19515b5 100644
--- a/winsup/cygwin/external.cc
+++ b/winsup/cygwin/external.cc
@@ -65,7 +65,7 @@ fillout_pinfo (pid_t pid, int winpid)
 	  ep.gid = p->gid;
 	  ep.pgid = p->pgid;
 	  ep.sid = p->sid;
-	  ep.umask = p->umask;
+	  ep.umask = 0;
 	  ep.start_time = p->start_time;
 	  ep.rusage_self = p->rusage_self;
 	  ep.rusage_children = p->rusage_children;
diff --git a/winsup/cygwin/net.cc b/winsup/cygwin/net.cc
index 31c4029..663fd16 100644
--- a/winsup/cygwin/net.cc
+++ b/winsup/cygwin/net.cc
@@ -807,7 +807,7 @@ cygwin_bind (int fd, struct sockaddr *my_addr, int addrlen)
 	    {
 	      _close (fd);
 	      chmod (un_addr->sun_path,
-		(S_IFSOCK | S_IRWXU | S_IRWXG | S_IRWXO) & ~myself->umask);
+		(S_IFSOCK | S_IRWXU | S_IRWXG | S_IRWXO) & ~cygheap->umask);
 	      res = 0;
 	    }
 #undef un_addr
diff --git a/winsup/cygwin/path.cc b/winsup/cygwin/path.cc
index 1b487ce..b415afa 100644
--- a/winsup/cygwin/path.cc
+++ b/winsup/cygwin/path.cc
@@ -110,9 +110,9 @@ cwdstuff cygcwd;	/* The current working directory. */
     !path[cygwin_shared->mount.cygdrive_len + 1]))
 
 #define ischrootpath(path) \
-	(myself->rootlen && \
-	 strncasematch (myself->root, path, myself->rootlen) && \
-	 (path[myself->rootlen] == '/' || path[myself->rootlen] == '\0'))
+	(cygheap->rootlen && \
+	 strncasematch (cygheap->root, path, cygheap->rootlen) && \
+	 (path[cygheap->rootlen] == '/' || path[cygheap->rootlen] == '\0'))
 
 /* Return non-zero if PATH1 is a prefix of PATH2.
    Both are assumed to be of the same path style and / vs \ usage.
@@ -615,7 +615,7 @@ normalize_posix_path (const char *src, char *dst)
   /* Two leading /'s?  If so, preserve them.  */
   else if (isslash (src[1]))
     {
-      if (myself->rootlen)
+      if (cygheap->rootlen)
 	{
 	  debug_printf ("ENOENT = normalize_posix_path (%s)", src);
 	  return ENOENT;
@@ -631,10 +631,10 @@ normalize_posix_path (const char *src, char *dst)
 	}
     }
   /* Exactly one leading slash. Absolute path. Check for chroot. */
-  else if (myself->rootlen)
+  else if (cygheap->rootlen)
     {
-      strcpy (dst, myself->root);
-      dst += myself->rootlen;
+      strcpy (dst, cygheap->root);
+      dst += cygheap->rootlen;
     }
 
   while (*src)
@@ -669,7 +669,7 @@ normalize_posix_path (const char *src, char *dst)
 	      else
 		{
 		  if (!ischrootpath (dst_start) ||
-		      dst - dst_start != (int) myself->rootlen)
+		      dst - dst_start != (int) cygheap->rootlen)
 		    while (dst > dst_start && !isslash (*--dst))
 		      continue;
 		  src++;
@@ -718,7 +718,7 @@ normalize_win32_path (const char *src, char *dst)
   /* Two leading \'s?  If so, preserve them.  */
   else if (SLASH_P (src[0]) && SLASH_P (src[1]))
     {
-      if (myself->rootlen)
+      if (cygheap->rootlen)
 	{
 	  debug_printf ("ENOENT = normalize_win32_path (%s)", src);
 	  return ENOENT;
@@ -727,13 +727,13 @@ normalize_win32_path (const char *src, char *dst)
       ++src;
     }
   /* If absolute path, care for chroot. */
-  else if (SLASH_P (src[0]) && !SLASH_P (src[1]) && myself->rootlen)
+  else if (SLASH_P (src[0]) && !SLASH_P (src[1]) && cygheap->rootlen)
     {
-      strcpy (dst, myself->root);
+      strcpy (dst, cygheap->root);
       char *c;
       while ((c = strchr (dst, '/')) != NULL)
 	*c = '\\';
-      dst += myself->rootlen;
+      dst += cygheap->rootlen;
       dst_root_start = dst;
       *dst++ = '\\';
     }
@@ -997,7 +997,7 @@ mount_info::conv_to_win32_path (const char *src_path, char *win32_path,
 	}
       isrelpath = !isabspath (src_path);
       *flags = set_flags_from_win32_path (dst);
-      if (myself->rootlen && dst[0] && dst[1] == ':')
+      if (cygheap->rootlen && dst[0] && dst[1] == ':')
 	{
 	  char posix_path[MAX_PATH + 1];
 
@@ -2939,9 +2939,9 @@ cwdstuff::get (char *buf, int need_posix, int with_chroot, unsigned ulen)
     tocopy = win32;
   else
     tocopy = with_chroot && ischrootpath(posix) ?
-	     posix + myself->rootlen : posix;
+	     posix + cygheap->rootlen : posix;
 
-  debug_printf("myself->root: %s, posix: %s", myself->root, posix);
+  debug_printf("cygheap->root: %s, posix: %s", cygheap->root, posix);
   if (strlen (tocopy) >= ulen)
     {
       set_errno (ERANGE);
diff --git a/winsup/cygwin/pinfo.h b/winsup/cygwin/pinfo.h
index 940e103..74ceb95 100644
--- a/winsup/cygwin/pinfo.h
+++ b/winsup/cygwin/pinfo.h
@@ -72,7 +72,6 @@ public:
   pid_t pgid;		/* Process group ID */
   pid_t sid;		/* Session ID */
   int ctty;		/* Control tty */
-  mode_t umask;
   bool has_pgid_children;/* True if we've forked or spawned children with our GID. */
   char username[MAX_USER_NAME]; /* user's name */
 
@@ -93,11 +92,6 @@ public:
   uid_t real_uid;	/* Remains intact on seteuid, replaced by setuid */
   gid_t real_gid;	/* Ditto */
 
-  /* Filled when chroot() is called by the process or one of it's parents.
-     Saved without trailing backslash. */
-  char root[MAX_PATH+1];
-  size_t rootlen;
-
   /* Resources used by process. */
   long start_time;
   struct rusage rusage_self;
diff --git a/winsup/cygwin/sigproc.cc b/winsup/cygwin/sigproc.cc
index 28fec50..999dc73 100644
--- a/winsup/cygwin/sigproc.cc
+++ b/winsup/cygwin/sigproc.cc
@@ -263,7 +263,6 @@ proc_subproc (DWORD what, DWORD val)
       vchild->pgid = myself->pgid;
       vchild->sid = myself->sid;
       vchild->ctty = myself->ctty;
-      vchild->umask = myself->umask;
       vchild->orig_uid = myself->orig_uid;
       vchild->orig_gid = myself->orig_gid;
       vchild->real_uid = myself->real_uid;
@@ -276,9 +275,7 @@ proc_subproc (DWORD what, DWORD val)
         }
       memcpy (vchild->logsrv, myself->logsrv, MAX_HOST_NAME);
       memcpy (vchild->domain, myself->domain, MAX_COMPUTERNAME_LENGTH+1);
-      memcpy (vchild->root, myself->root, MAX_PATH+1);
       vchild->token = myself->token;
-      vchild->rootlen = myself->rootlen;
       vchild->process_state |= PID_INITIALIZING | (myself->process_state & PID_USETTY);
 
       sigproc_printf ("added pid %d to wait list, slot %d, winpid %p, handle %p",
diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc
index 15bcbfb..348a49b 100644
--- a/winsup/cygwin/syscalls.cc
+++ b/winsup/cygwin/syscalls.cc
@@ -36,6 +36,7 @@ details. */
 #include "shared_info.h"
 #include "perprocess.h"
 #include "security.h"
+#include "cygheap.h"
 
 extern BOOL allow_ntsec;
 
@@ -401,7 +402,7 @@ _open (const char *unix_path, int flags, ...)
 	set_errno (ENMFILE);
       else if ((fh = fdtab.build_fhandler (fd, unix_path, NULL)) == NULL)
 	res = -1;		// errno already set
-      else if (!fh->open (unix_path, flags, (mode & 0777) & ~myself->umask))
+      else if (!fh->open (unix_path, flags, (mode & 0777) & ~cygheap->umask))
 	{
 	  fdtab.release (fd);
 	  res = -1;
@@ -764,8 +765,8 @@ umask (mode_t mask)
 {
   mode_t oldmask;
 
-  oldmask = myself->umask;
-  myself->umask = mask & 0777;
+  oldmask = cygheap->umask;
+  cygheap->umask = mask & 0777;
   return oldmask;
 }
 
@@ -1921,16 +1922,19 @@ chroot (const char *newroot)
       set_errno (ENOTDIR);
       goto done;
     }
+  char buf[MAX_PATH + 1];
   ret = cygwin_shared->mount.conv_to_posix_path (path.get_win32 (),
-						 myself->root, 0);
+						 buf, 0);
   if (ret)
     {
       set_errno (ret);
       goto done;
     }
-  myself->rootlen = strlen (myself->root);
-  if (myself->root[myself->rootlen - 1] == '/')
-    myself->root[--myself->rootlen] = '\0';
+  cygheap->rootlen = strlen (cygheap->root);
+  if (cygheap->rootlen > 1 && buf[cygheap->rootlen - 1] == '/')
+    buf[--cygheap->rootlen] = '\0';
+  cygheap->root = (char *) crealloc (cygheap->root, cygheap->rootlen + 1);
+  strcpy (cygheap->root, buf);
   ret = 0;
 
 done: