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/* cygheap.h: Cygwin heap manager.
Copyright 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. */
#undef cfree
enum cygheap_types
{
HEAP_FHANDLER,
HEAP_STR,
HEAP_ARGV,
HEAP_BUF,
HEAP_1_START,
HEAP_1_STR,
HEAP_1_ARGV,
HEAP_1_BUF,
HEAP_1_EXEC,
HEAP_1_MAX = 100
};
#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];
};
class cygheap_root
{
/* Root directory information.
This is used after a chroot is called. */
size_t rootlen;
char *root;
public:
cygheap_root (cygheap_root &nroot);
~cygheap_root ();
char *operator =(const char *new_root);
size_t length () const { return rootlen; }
const char *path () const { return root; }
};
class cygheap_user
{
/* Extendend user information.
The information is derived from the internal_getlogin call
when on a NT system. */
char *pname; /* user's name */
char *plogsrv; /* Logon server, may be FQDN */
char *pdomain; /* Logon domain of the user */
PSID psid; /* buffer for user's SID */
public:
uid_t orig_uid; /* Remains intact even after impersonation */
uid_t orig_gid; /* Ditto */
uid_t real_uid; /* Remains intact on seteuid, replaced by setuid */
gid_t real_gid; /* Ditto */
/* token is needed if set(e)uid should be called. It can be set by a call
to `set_impersonation_token()'. */
HANDLE token;
BOOL impersonated;
cygheap_user () : pname (NULL), plogsrv (NULL), pdomain (NULL), psid (NULL) {}
~cygheap_user ();
void set_name (const char *new_name);
const char *name () const { return pname; }
void set_logsrv (const char *new_logsrv);
const char *logsrv () const { return plogsrv; }
void set_domain (const char *new_domain);
const char *domain () const { return pdomain; }
BOOL set_sid (PSID new_sid);
PSID sid () const { return psid; }
void operator =(cygheap_user &user)
{
set_name (user.name ());
set_logsrv (user.logsrv ());
set_domain (user.domain ());
set_sid (user.sid ());
}
};
/* cwd cache stuff. */
class muto;
struct cwdstuff
{
char *posix;
char *win32;
DWORD hash;
muto *lock;
char *get (char *buf, int need_posix = 1, int with_chroot = 0, unsigned ulen = MAX_PATH);
DWORD get_hash ();
void init ();
void fixup_after_exec (char *win32, char *posix, DWORD hash);
bool get_initial ();
void set (const char *win32_cwd, const char *posix_cwd = NULL);
};
struct init_cygheap
{
_cmalloc_entry *chain;
cygheap_root root;
cygheap_user user;
mode_t umask;
HANDLE shared_h;
HANDLE console_h;
cwdstuff cwd;
dtable fdtab;
};
#define CYGHEAPSIZE (sizeof (init_cygheap) + (4000 * sizeof (fhandler_union)) + (2 * 65536))
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);
void *__stdcall cmalloc (cygheap_types, DWORD) __attribute__ ((regparm(2)));
void *__stdcall crealloc (void *, DWORD) __attribute__ ((regparm(2)));
void *__stdcall ccalloc (cygheap_types, DWORD, DWORD) __attribute__ ((regparm(3)));
char *__stdcall cstrdup (const char *) __attribute__ ((regparm(1)));
char *__stdcall cstrdup1 (const char *) __attribute__ ((regparm(1)));
void __stdcall cygheap_init ();
}
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