2a6fc028ba
* child_info.h (child_info): Move shared_h, console_h to cygheap. Add mount_h. * cygheap.h (init_cygheap): Add shared_h, console_h. * cygheap.cc (init_cheap): Initialize heap at a fixed location after the shared memory regions. Initialize cygheap->user name here. * dcrt0.cc (dll_crt0_1): Call getpagesize () to initialize constants. Remove cygheap_init since it is done in shared_init now. (_dll_crt0): Initialize mount_h, remove shared_h and console_h initialization. * fhandler_console.cc (console_shared_h): Eliminate. (get_tty_stuff): Use cygheap->console_h rather than console_shared_h. * heap.cc (heap_init): Use page size constant calculated earlier in initialization. * shared.cc: Eliminate cygwin_shared_h. Add cygwin_mount_h. (mount_table_init): New function for initializing a user mount table. (open_shared_file_map): Use constant for shared memory region. Initialize cygheap and mount table here. (open_shared): Improve debugging output. (shared_info::initialize): Eliminate call to mount.init. (shared_terminate): Use cygheap->shared_h. Close cygwin_mount_h. (open_shared_file_map): Eliminate. * shared_info.h (mount_info): Add a version field. (shared_align_past): New macro for calculating location for shared memory regions. * sigproc.cc (init_child_info): Eliminate shared_h, console_h. * spawn.cc (spawn_guts): Pass on cygwin_mount_h iff not a different user. * syscalls.cc (system_info): New global holding system memory defaults. (getpagesize): Use system_info. * uinfo.cc (internal_getlogin): Only fill in user name if nonexistent. * winsup.h: Declare system_info. * passwd.cc (read_etc_passwd): Use cygheap->user.name () rather than retrieving the name again.
123 lines
3.1 KiB
C++
123 lines
3.1 KiB
C++
/* cygheap.h: Cygwin heap manager.
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Copyright 2000 Cygnus Solutions.
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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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#undef cfree
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enum cygheap_types
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{
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HEAP_FHANDLER,
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HEAP_STR,
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HEAP_ARGV,
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HEAP_BUF,
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HEAP_1_START,
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HEAP_1_STR,
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HEAP_1_ARGV,
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HEAP_1_BUF,
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HEAP_1_EXEC,
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HEAP_1_MAX = 100
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};
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#define CYGHEAPSIZE ((4000 * sizeof (fhandler_union)) + (2 * 65536))
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#define incygheap(s) (cygheap && ((char *) (s) >= (char *) cygheap) && ((char *) (s) <= ((char *) cygheap_max)))
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struct _cmalloc_entry
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{
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union
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{
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DWORD b;
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char *ptr;
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};
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struct _cmalloc_entry *prev;
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char data[0];
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};
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class cygheap_root
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{
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/* Root directory information.
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This is used after a chroot is called. */
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size_t rootlen;
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char *root;
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public:
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cygheap_root (cygheap_root &nroot);
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~cygheap_root ();
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char *operator =(const char *new_root);
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size_t length () const { return rootlen; }
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const char *path () const { return root; }
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};
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class cygheap_user
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{
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/* Extendend user information.
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The information is derived from the internal_getlogin call
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when on a NT system. */
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char *pname; /* user's name */
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char *plogsrv; /* Logon server, may be FQDN */
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char *pdomain; /* Logon domain of the user */
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PSID psid; /* buffer for user's SID */
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public:
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uid_t orig_uid; /* Remains intact even after impersonation */
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uid_t orig_gid; /* Ditto */
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uid_t real_uid; /* Remains intact on seteuid, replaced by setuid */
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gid_t real_gid; /* Ditto */
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/* token is needed if set(e)uid should be called. It can be set by a call
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to `set_impersonation_token()'. */
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HANDLE token;
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BOOL impersonated;
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cygheap_user () : pname (NULL), plogsrv (NULL), pdomain (NULL), psid (NULL) {}
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~cygheap_user ();
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void set_name (const char *new_name);
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const char *name () const { return pname; }
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void set_logsrv (const char *new_logsrv);
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const char *logsrv () const { return plogsrv; }
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void set_domain (const char *new_domain);
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const char *domain () const { return pdomain; }
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BOOL set_sid (PSID new_sid);
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PSID sid () const { return psid; }
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void operator =(cygheap_user &user)
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{
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set_name (user.name ());
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set_logsrv (user.logsrv ());
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set_domain (user.domain ());
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set_sid (user.sid ());
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}
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};
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struct init_cygheap
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{
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_cmalloc_entry *chain;
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cygheap_root root;
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cygheap_user user;
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mode_t umask;
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HANDLE shared_h;
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HANDLE console_h;
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};
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extern init_cygheap *cygheap;
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extern void *cygheap_max;
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extern "C" {
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void __stdcall cfree (void *) __attribute__ ((regparm(1)));
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void __stdcall cygheap_fixup_in_child (HANDLE, bool);
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void *__stdcall cmalloc (cygheap_types, DWORD) __attribute__ ((regparm(2)));
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void *__stdcall crealloc (void *, DWORD) __attribute__ ((regparm(2)));
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void *__stdcall ccalloc (cygheap_types, DWORD, DWORD) __attribute__ ((regparm(3)));
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char *__stdcall cstrdup (const char *) __attribute__ ((regparm(1)));
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char *__stdcall cstrdup1 (const char *) __attribute__ ((regparm(1)));
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void __stdcall cygheap_init ();
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}
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