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Diffstat (limited to 'winsup/cygwin/shared.cc')
-rw-r--r--winsup/cygwin/shared.cc290
1 files changed, 0 insertions, 290 deletions
diff --git a/winsup/cygwin/shared.cc b/winsup/cygwin/shared.cc
deleted file mode 100644
index f777a450e..000000000
--- a/winsup/cygwin/shared.cc
+++ /dev/null
@@ -1,290 +0,0 @@
-/* shared.cc: shared data area support.
-
- Copyright 1996, 1997, 1998, 1999, 2000 Cygnus Solutions.
-
-This file is part of Cygwin.
-
-This software is a copyrighted work licensed under the terms of the
-Cygwin license. Please consult the file "CYGWIN_LICENSE" for
-details. */
-
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <grp.h>
-#include <pwd.h>
-#include "winsup.h"
-
-#define SHAREDVER (unsigned)(cygwin_version.api_major << 16 | \
- cygwin_version.api_minor)
-
-shared_info NO_COPY *cygwin_shared = NULL;
-
-/* The handle of the shared data area. */
-HANDLE cygwin_shared_h = NULL;
-
-/* General purpose security attribute objects for global use. */
-SECURITY_ATTRIBUTES NO_COPY sec_none;
-SECURITY_ATTRIBUTES NO_COPY sec_none_nih;
-SECURITY_ATTRIBUTES NO_COPY sec_all;
-SECURITY_ATTRIBUTES NO_COPY sec_all_nih;
-
-char * __stdcall
-shared_name (const char *str, int num)
-{
- static NO_COPY char buf[MAX_PATH] = {0};
- char envbuf[6];
-
- __small_sprintf (buf, "%s.%s.%d", cygwin_version.shared_id, str, num);
- if (GetEnvironmentVariable("CYGWIN_TESTING", envbuf, 5))
- strcat(buf, cygwin_version.dll_build_date);
- return buf;
-}
-
-/* Open the shared memory map. */
-static void __stdcall
-open_shared_file_map ()
-{
- cygwin_shared = (shared_info *) open_shared ("shared",
- cygwin_shared_h,
- sizeof (*cygwin_shared),
- (void *)0xa000000);
- ProtectHandle (cygwin_shared);
-}
-
-void * __stdcall
-open_shared (const char *name, HANDLE &shared_h, DWORD size, void *addr)
-{
- void *shared;
-
- if (!shared_h)
- {
- char *mapname;
- if (!name)
- mapname = NULL;
- else
- {
- mapname = shared_name (name, 0);
- shared_h = OpenFileMappingA (FILE_MAP_READ | FILE_MAP_WRITE,
- TRUE, mapname);
- }
- if (!shared_h &&
- !(shared_h = CreateFileMappingA ((HANDLE) 0xffffffff,
- &sec_all,
- PAGE_READWRITE,
- 0,
- size,
- mapname)))
- api_fatal ("CreateFileMappingA, %E. Terminating.");
- }
-
- shared = (shared_info *) MapViewOfFileEx (shared_h,
- FILE_MAP_READ | FILE_MAP_WRITE,
- 0, 0, 0, addr);
-
- if (!shared)
- {
- /* Probably win95, so try without specifying the address. */
- shared = (shared_info *) MapViewOfFileEx (shared_h,
- FILE_MAP_READ|FILE_MAP_WRITE,
- 0,0,0,0);
- }
-
- if (!shared)
- api_fatal ("MapViewOfFileEx, %E. Terminating.");
-
- debug_printf ("name %s, shared %p, h %p", name, shared, shared_h);
-
- /* FIXME: I couldn't find anywhere in the documentation a note about
- whether the memory is initialized to zero. The code assumes it does
- and since this part seems to be working, we'll leave it as is. */
- return shared;
-}
-
-void
-shared_info::initialize ()
-{
- /* Ya, Win32 provides a way for a dll to watch when it's first loaded.
- We may eventually want to use it but for now we have this. */
- if (inited)
- {
- if (inited != SHAREDVER)
- api_fatal ("Shared region version mismatch. Version %x != %x.\n"
- "Are you using multiple versions of cygwin1.dll?\n"
- "Run 'cygcheck -r -s -v' to find out.",
- inited, SHAREDVER);
- return;
- }
-
- /* Initialize the mount table. */
- mount.init ();
-
- /* Initialize the process table. */
- p.init ();
-
- /* Initialize the queue of deleted files. */
- delqueue.init ();
-
- /* Initialize tty table. */
- tty.init ();
-
- /* Fetch misc. registry entries. */
-
- reg_key reg (KEY_READ, NULL);
-
- /* Note that reserving a huge amount of heap space does not result in
- swapping since we are not committing it. */
- /* FIXME: We should not be restricted to a fixed size heap no matter
- what the fixed size is. */
-
- heap_chunk_in_mb = reg.get_int ("heap_chunk_in_mb", 128);
- if (heap_chunk_in_mb < 4)
- {
- heap_chunk_in_mb = 4;
- reg.set_int ("heap_chunk_in_mb", heap_chunk_in_mb);
- }
-
- inited = SHAREDVER;
-}
-
-void __stdcall
-shared_init ()
-{
- open_shared_file_map ();
-
- cygwin_shared->initialize ();
-}
-
-void __stdcall
-shared_terminate ()
-{
- if (cygwin_shared_h)
- ForceCloseHandle (cygwin_shared_h);
-}
-
-unsigned
-shared_info::heap_chunk_size ()
-{
- return heap_chunk_in_mb << 20;
-}
-
-/* For apps that wish to access the shared data. */
-
-shared_info *
-cygwin_getshared ()
-{
- return cygwin_shared;
-}
-
-/*
- * Function to return a common SECURITY_DESCRIPTOR * that
- * allows all access.
- */
-
-static NO_COPY SECURITY_DESCRIPTOR *null_sdp = 0;
-
-SECURITY_DESCRIPTOR *__stdcall
-get_null_sd ()
-{
- static NO_COPY SECURITY_DESCRIPTOR sd;
-
- if (null_sdp == 0)
- {
- InitializeSecurityDescriptor (&sd, SECURITY_DESCRIPTOR_REVISION);
- SetSecurityDescriptorDacl (&sd, TRUE, 0, FALSE);
- null_sdp = &sd;
- }
- return null_sdp;
-}
-
-extern PSID get_admin_sid ();
-extern PSID get_system_sid ();
-extern PSID get_creator_owner_sid ();
-
-PSECURITY_ATTRIBUTES __stdcall
-sec_user (PVOID sa_buf, PSID sid2, BOOL inherit)
-{
- if (! sa_buf)
- return inherit ? &sec_none_nih : &sec_none;
-
- PSECURITY_ATTRIBUTES psa = (PSECURITY_ATTRIBUTES) sa_buf;
- PSECURITY_DESCRIPTOR psd = (PSECURITY_DESCRIPTOR)
- ((char *) sa_buf + sizeof (*psa));
- PACL acl = (PACL) ((char *) sa_buf + sizeof (*psa) + sizeof (*psd));
-
- char sid_buf[MAX_SID_LEN];
- PSID sid = (PSID) sid_buf;
-
- if (myself->psid)
- CopySid (MAX_SID_LEN, sid, myself->psid);
- else if (! lookup_name (getlogin (), myself->logsrv, sid))
- return inherit ? &sec_none_nih : &sec_none;
-
- size_t acl_len = sizeof (ACL)
- + 4 * (sizeof (ACCESS_ALLOWED_ACE) - sizeof (DWORD))
- + GetLengthSid (sid)
- + GetLengthSid (get_admin_sid ())
- + GetLengthSid (get_system_sid ())
- + GetLengthSid (get_creator_owner_sid ());
- if (sid2)
- acl_len += sizeof (ACCESS_ALLOWED_ACE) - sizeof (DWORD)
- + GetLengthSid (sid2);
-
- if (! InitializeAcl (acl, acl_len, ACL_REVISION))
- debug_printf("InitializeAcl %E");
-
- if (! AddAccessAllowedAce (acl, ACL_REVISION,
- SPECIFIC_RIGHTS_ALL | STANDARD_RIGHTS_ALL,
- sid))
- debug_printf("AddAccessAllowedAce(%s) %E", getlogin());
-
- if (! AddAccessAllowedAce (acl, ACL_REVISION,
- SPECIFIC_RIGHTS_ALL | STANDARD_RIGHTS_ALL,
- get_admin_sid ()))
- debug_printf("AddAccessAllowedAce(admin) %E");
-
- if (! AddAccessAllowedAce (acl, ACL_REVISION,
- SPECIFIC_RIGHTS_ALL | STANDARD_RIGHTS_ALL,
- get_system_sid ()))
- debug_printf("AddAccessAllowedAce(system) %E");
-
- if (! AddAccessAllowedAce (acl, ACL_REVISION,
- SPECIFIC_RIGHTS_ALL | STANDARD_RIGHTS_ALL,
- get_creator_owner_sid ()))
- debug_printf("AddAccessAllowedAce(creator_owner) %E");
-
- if (sid2)
- if (! AddAccessAllowedAce (acl, ACL_REVISION,
- SPECIFIC_RIGHTS_ALL | STANDARD_RIGHTS_ALL,
- sid2))
- debug_printf("AddAccessAllowedAce(sid2) %E");
-
- if (! InitializeSecurityDescriptor (psd,
- SECURITY_DESCRIPTOR_REVISION))
- debug_printf("InitializeSecurityDescriptor %E");
-
-/*
- * Setting the owner lets the created security attribute not work
- * on NT4 SP3 Server. Don't know why, but the function still does
- * what it should do also if the owner isn't set.
-*/
-#if 0
- if (! SetSecurityDescriptorOwner (psd, sid, FALSE))
- debug_printf("SetSecurityDescriptorOwner %E");
-#endif
-
- if (! SetSecurityDescriptorDacl (psd, TRUE, acl, FALSE))
- debug_printf("SetSecurityDescriptorDacl %E");
-
- psa->nLength = sizeof (SECURITY_ATTRIBUTES);
- psa->lpSecurityDescriptor = psd;
- psa->bInheritHandle = inherit;
- return psa;
-}
-
-SECURITY_ATTRIBUTES *__stdcall
-sec_user_nih (PVOID sa_buf, PSID sid2)
-{
- return sec_user (sa_buf, sid2, FALSE);
-}
-
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