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Diffstat (limited to 'winsup/cygwin/shared.cc')
-rw-r--r--winsup/cygwin/shared.cc179
1 files changed, 37 insertions, 142 deletions
diff --git a/winsup/cygwin/shared.cc b/winsup/cygwin/shared.cc
index 81d39e3ed..5c3beb999 100644
--- a/winsup/cygwin/shared.cc
+++ b/winsup/cygwin/shared.cc
@@ -1,6 +1,6 @@
/* shared.cc: shared data area support.
- Copyright 1996, 1997, 1998, 1999, 2000, 2001 Red Hat, Inc.
+ Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
This file is part of Cygwin.
@@ -14,31 +14,22 @@ details. */
#include <stdlib.h>
#include <grp.h>
#include <pwd.h>
-#include "sync.h"
-#include "sigproc.h"
+#include <errno.h>
#include "pinfo.h"
#include "security.h"
#include "fhandler.h"
#include "path.h"
#include "dtable.h"
+#include "cygerrno.h"
#include "cygheap.h"
#include "heap.h"
-#include "shared_info.h"
+#include "shared_info_magic.h"
#include "registry.h"
#include "cygwin_version.h"
-#define SHAREDVER (unsigned)(cygwin_version.api_major << 16 | \
- cygwin_version.api_minor)
-
shared_info NO_COPY *cygwin_shared = NULL;
mount_info NO_COPY *mount_table = NULL;
-HANDLE cygwin_mount_h;
-
-/* 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;
+HANDLE NO_COPY cygwin_mount_h;
char * __stdcall
shared_name (const char *str, int num)
@@ -47,13 +38,13 @@ shared_name (const char *str, int num)
extern bool _cygwin_testing;
__small_sprintf (buf, "%s.%s.%d", cygwin_version.shared_id, str, num);
- if (!_cygwin_testing)
+ if (_cygwin_testing)
strcat (buf, cygwin_version.dll_build_date);
return buf;
}
void * __stdcall
-open_shared (const char *name, HANDLE &shared_h, DWORD size, void *addr)
+open_shared (const char *name, int n, HANDLE &shared_h, DWORD size, void *addr)
{
void *shared;
@@ -64,18 +55,14 @@ open_shared (const char *name, HANDLE &shared_h, DWORD size, void *addr)
mapname = NULL;
else
{
- mapname = shared_name (name, 0);
+ mapname = shared_name (name, n);
shared_h = OpenFileMappingA (FILE_MAP_READ | FILE_MAP_WRITE,
TRUE, mapname);
}
if (!shared_h &&
- !(shared_h = CreateFileMappingA (INVALID_HANDLE_VALUE,
- &sec_all,
- PAGE_READWRITE,
- 0,
- size,
- mapname)))
- api_fatal ("CreateFileMappingA, %E. Terminating.");
+ !(shared_h = CreateFileMapping (INVALID_HANDLE_VALUE, &sec_all,
+ PAGE_READWRITE, 0, size, mapname)))
+ api_fatal ("CreateFileMapping, %E. Terminating.");
}
shared = (shared_info *) MapViewOfFileEx (shared_h,
@@ -104,13 +91,12 @@ open_shared (const char *name, HANDLE &shared_h, DWORD size, void *addr)
void
shared_info::initialize ()
{
- if (inited)
+ if (version)
{
- 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);
+ if (version != SHARED_VERSION_MAGIC)
+ multiple_cygwin_problem ("shared", version, SHARED_VERSION);
+ else if (cb != SHARED_INFO_CB)
+ multiple_cygwin_problem ("shared size", cb, SHARED_INFO_CB);
return;
}
@@ -119,7 +105,11 @@ shared_info::initialize ()
/* Initialize tty table. */
tty.init ();
- inited = SHAREDVER;
+ version = SHARED_VERSION_MAGIC;
+ cb = sizeof (*this);
+ if (cb != SHARED_INFO_CB)
+ system_printf ("size of shared memory region changed from %u to %u",
+ SHARED_INFO_CB, cb);
}
void __stdcall
@@ -128,6 +118,7 @@ memory_init ()
/* Initialize general shared memory */
HANDLE shared_h = cygheap ? cygheap->shared_h : NULL;
cygwin_shared = (shared_info *) open_shared ("shared",
+ CYGWIN_VERSION_SHARED_DATA,
shared_h,
sizeof (*cygwin_shared),
cygwin_shared_address);
@@ -149,23 +140,34 @@ memory_init ()
}
cygheap->shared_h = shared_h;
- ProtectHandle (cygheap->shared_h);
+ ProtectHandleINH (cygheap->shared_h);
+ getpagesize ();
heap_init ();
- mount_table = (mount_info *) open_shared (user_name, cygwin_mount_h,
+ mount_table = (mount_info *) open_shared (user_name, MOUNT_VERSION,
+ cygwin_mount_h,
sizeof (mount_info), 0);
debug_printf ("opening mount table for '%s' at %p", cygheap->user.name (),
mount_table_address);
- ProtectHandle (cygwin_mount_h);
+ ProtectHandleINH (cygwin_mount_h);
debug_printf ("mount table version %x at %p", mount_table->version, mount_table);
/* Initialize the Cygwin per-user mount table, if necessary */
if (!mount_table->version)
{
- mount_table->version = MOUNT_VERSION;
+ mount_table->version = MOUNT_VERSION_MAGIC;
debug_printf ("initializing mount table");
+ mount_table->cb = sizeof (*mount_table);
+ if (mount_table->cb != MOUNT_INFO_CB)
+ system_printf ("size of mount table region changed from %u to %u",
+ MOUNT_INFO_CB, mount_table->cb);
mount_table->init (); /* Initialize the mount table. */
}
+ else if (mount_table->version != MOUNT_VERSION_MAGIC)
+ multiple_cygwin_problem ("mount", mount_table->version, MOUNT_VERSION);
+ else if (mount_table->cb != MOUNT_INFO_CB)
+ multiple_cygwin_problem ("mount table size", mount_table->cb, MOUNT_INFO_CB);
+
}
void __stdcall
@@ -201,110 +203,3 @@ shared_info::heap_chunk_size ()
return heap_chunk_in_mb << 20;
}
-
-/*
- * 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;
-}
-
-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));
-
- cygsid sid;
-
- if (cygheap->user.sid ())
- sid = cygheap->user.sid ();
- else if (! lookup_name (getlogin (), cygheap->user.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 (well_known_admins_sid)
- + GetLengthSid (well_known_system_sid)
- + GetLengthSid (well_known_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,
- well_known_admins_sid))
- debug_printf ("AddAccessAllowedAce(admin) %E");
-
- if (! AddAccessAllowedAce (acl, ACL_REVISION,
- SPECIFIC_RIGHTS_ALL | STANDARD_RIGHTS_ALL,
- well_known_system_sid))
- debug_printf ("AddAccessAllowedAce(system) %E");
-
- if (! AddAccessAllowedAce (acl, ACL_REVISION,
- SPECIFIC_RIGHTS_ALL | STANDARD_RIGHTS_ALL,
- well_known_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);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-06 00:49:06 +0300