cef5dfd75a
(user_info::version): Make LONG to accommodate spinlock use. (user_info::create): New static function renamed from user_info_create. (user_info::initialize): New private function renamed from user_info_initialize. (SHARED_VERSION): Delete. (SHARED_VERSION_MAGIC): Ditto. (USER_VERSION_MAGIC): Ditto. (SHARED_INFO_CB): Ditto. (USER_VERSION): Ditto. (USER_VERSION_MAGIC): Ditto. (CURR_SHARED_MAGIC): Update. (CURR_USER_MAGIC): Ditto. (shared_info::version): Make LONG to accommodate spinlock use. (shared_info::create): New static function mirroring user_info::create. (dll_crt0_1): Accommodate change to user_info::initialize. * spinlock.h (spinlock::setto): New variable member. (spinlock::done): New function. (spinlock::spinlock): Generalize to allow arbitrary values and timeouts. Call done() when lock is not needed. * ntdll.h: Make multiple-inclusion safe. (NtQuerySystemTime): Declare. * shared.cc (installation_root_inited): Rename from shared_mem_inited. (init_installation_root): Make inline. Use a spinlock to ensure that this is initialized only once per session. (user_info::initialize): Rename from user_shared_initialize. Protect with spinlock on sversion and remove other spinlock-like things. Remove reference to user_shared since it is now implicit. Refer to spinlock version of multiple_cygwin_problem to ensure that any spinlock is released. (user_info::create): Rename from user_shared_create. Accommodate change from user_shared_initialize to user_info::initialize. (shared_info::create): New inline function. (shared_info::initialize): Protect with spinlock on sversion. Move heap_init back under specific control of shared_info spinlock. Remove reference to SHARED_INFO_CB and just use sizeof(*this). (memory_init): Move all locking into respective functions where it is needed. Accommodate name changes. Remove call to heap_init(). * syscalls.cc (seteuid32): Accommodate name change to user_info::create(). * mount.cc (mount_info::create_root_entry): Report on errors from add_item since they should be nonexistent. (mount_info::init): Don't initialize nmounts. It should already be zero. Give more verbose error when root_idx < 0. Implicitly use this pointer rather than explicitly referencing mount_table->. (mount_info::add_item): Minor whitespace fix.
108 lines
2.7 KiB
C++
108 lines
2.7 KiB
C++
/* shared_info.h: shared info for cygwin
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Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2008, 2009 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include "tty.h"
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#include "security.h"
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#include "mtinfo.h"
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#include "limits.h"
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#include "mount.h"
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class user_info
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{
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void initialize ();
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public:
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LONG version;
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DWORD cb;
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bool warned_msdos;
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mount_info mountinfo;
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friend void dll_crt0_1 (void *);
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static void create (bool);
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};
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/******** Shared Info ********/
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/* Data accessible to all tasks */
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#define CURR_SHARED_MAGIC 0xcebb78fcU
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#define USER_VERSION 1
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#define CURR_USER_MAGIC 0x6112afb3U
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/* NOTE: Do not make gratuitous changes to the names or organization of the
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below class. The layout is checksummed to determine compatibility between
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different cygwin versions. */
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class shared_info
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{
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LONG version;
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DWORD cb;
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public:
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unsigned heap_chunk;
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bool heap_slop_inited;
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unsigned heap_slop;
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DWORD sys_mount_table_counter;
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tty_list tty;
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LONG last_used_bindresvport;
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DWORD obcaseinsensitive;
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mtinfo mt;
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void initialize ();
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void init_obcaseinsensitive ();
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unsigned heap_chunk_size ();
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unsigned heap_slop_size ();
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static void create ();
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};
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extern shared_info *cygwin_shared;
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extern user_info *user_shared;
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#define mount_table (&(user_shared->mountinfo))
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extern HANDLE cygwin_user_h;
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enum shared_locations
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{
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SH_CYGWIN_SHARED,
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SH_USER_SHARED,
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SH_SHARED_CONSOLE,
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SH_MYSELF,
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SH_TOTAL_SIZE,
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SH_JUSTCREATE,
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SH_JUSTOPEN
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};
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void memory_init (bool) __attribute__ ((regparm(1)));
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void __stdcall shared_destroy ();
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#define shared_align_past(p) \
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((char *) (system_info.dwAllocationGranularity * \
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(((DWORD) ((p) + 1) + system_info.dwAllocationGranularity - 1) / \
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system_info.dwAllocationGranularity)))
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#ifdef _FHANDLER_H_
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struct console_state
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{
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tty_min tty_min_state;
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dev_console dev_state;
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};
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#endif
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HANDLE get_shared_parent_dir ();
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HANDLE get_session_parent_dir ();
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char *__stdcall shared_name (char *, const char *, int);
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WCHAR *__stdcall shared_name (WCHAR *, const WCHAR *, int);
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void *__stdcall open_shared (const WCHAR *, int, HANDLE&, DWORD,
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shared_locations, PSECURITY_ATTRIBUTES = &sec_all,
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DWORD = FILE_MAP_READ | FILE_MAP_WRITE);
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void *__stdcall open_shared (const WCHAR *, int, HANDLE&, DWORD,
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shared_locations *, PSECURITY_ATTRIBUTES = &sec_all,
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DWORD = FILE_MAP_READ | FILE_MAP_WRITE);
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extern void user_shared_create (bool reinit);
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extern void init_installation_root ();
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extern WCHAR installation_root[PATH_MAX];
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extern UNICODE_STRING installation_key;
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