2000-09-03 06:16:35 +02:00
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/* 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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2000-09-27 07:12:09 +02:00
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HEAP_BUF,
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2001-06-03 04:31:16 +02:00
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HEAP_MOUNT,
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2000-09-27 07:12:09 +02:00
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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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2000-09-30 06:54:11 +02:00
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HEAP_1_EXEC,
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HEAP_1_MAX = 100
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2000-09-03 06:16:35 +02:00
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};
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2000-10-02 04:26:04 +02:00
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#define incygheap(s) (cygheap && ((char *) (s) >= (char *) cygheap) && ((char *) (s) <= ((char *) cygheap_max)))
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2000-09-03 06:16:35 +02:00
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2000-11-14 06:53:32 +01:00
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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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2001-06-03 04:31:16 +02:00
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struct cygheap_root_mount_info
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{
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char posix_path[MAX_PATH];
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unsigned posix_pathlen;
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char native_path[MAX_PATH];
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unsigned native_pathlen;
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};
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2001-06-04 03:28:09 +02:00
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/* CGF: FIXME This doesn't belong here */
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int path_prefix_p (const char *path1, const char *path2, int len1) __attribute__ ((regparm (3)));
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2000-11-15 01:13:09 +01:00
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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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2001-06-03 04:31:16 +02:00
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struct cygheap_root_mount_info *m;
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2000-11-15 01:13:09 +01:00
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public:
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2001-06-03 04:31:16 +02:00
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bool posix_ok (const char *path)
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{
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if (!m)
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return 1;
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return path_prefix_p (m->posix_path, path, m->posix_pathlen);
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}
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bool ischroot_native (const char *path)
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{
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if (!m)
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return 1;
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return strncasematch (m->native_path, path, m->native_pathlen)
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2001-09-07 23:32:07 +02:00
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&& (path[m->native_pathlen] == '\\' || !path[m->native_pathlen]);
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2001-06-03 04:31:16 +02:00
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}
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const char *unchroot (const char *path)
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{
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if (!m)
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return path;
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const char *p = path + m->posix_pathlen;
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if (!*p)
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p = "/";
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return p;
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}
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bool exists () {return !!m;}
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void set (const char *posix, const char *native);
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size_t posix_length () const { return m->posix_pathlen; }
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const char *posix_path () const { return m->posix_path; }
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size_t native_length () const { return m->native_pathlen; }
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const char *native_path () const { return m->native_path; }
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2000-11-15 01:13:09 +01:00
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};
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2001-01-17 15:57:09 +01:00
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class cygheap_user
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{
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2000-11-15 01:13:09 +01:00
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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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2000-11-15 22:04:02 +01:00
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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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2000-11-15 01:13:09 +01:00
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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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2000-11-15 22:04:02 +01:00
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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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2001-06-04 16:29:54 +02:00
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cygheap_user () : pname (NULL), plogsrv (NULL), pdomain (NULL),
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psid (NULL), token (INVALID_HANDLE_VALUE) {}
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2000-11-15 01:13:09 +01:00
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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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2001-01-17 15:57:09 +01:00
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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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2000-11-15 01:13:09 +01:00
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};
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2000-11-14 06:53:32 +01:00
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2001-04-17 05:52:08 +02:00
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/* cwd cache stuff. */
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class muto;
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struct cwdstuff
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{
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char *posix;
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char *win32;
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DWORD hash;
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muto *lock;
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char *get (char *buf, int need_posix = 1, int with_chroot = 0, unsigned ulen = MAX_PATH);
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DWORD get_hash ();
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void init ();
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void fixup_after_exec (char *win32, char *posix, DWORD hash);
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bool get_initial ();
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void set (const char *win32_cwd, const char *posix_cwd = NULL);
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};
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2000-11-14 06:53:32 +01:00
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struct init_cygheap
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{
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_cmalloc_entry *chain;
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2001-09-06 05:39:18 +02:00
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char *buckets[32];
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2001-09-07 23:32:07 +02:00
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void *heapbase;
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void *heapptr;
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void *heaptop;
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2000-11-15 01:13:09 +01:00
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cygheap_root root;
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cygheap_user user;
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2000-11-14 06:53:32 +01:00
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mode_t umask;
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2001-01-28 06:51:15 +01:00
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HANDLE shared_h;
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HANDLE console_h;
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2001-04-17 05:52:08 +02:00
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cwdstuff cwd;
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2001-04-18 23:10:15 +02:00
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dtable fdtab;
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2000-11-14 06:53:32 +01:00
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};
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2001-04-18 23:10:15 +02:00
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#define CYGHEAPSIZE (sizeof (init_cygheap) + (4000 * sizeof (fhandler_union)) + (2 * 65536))
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2000-11-14 06:53:32 +01:00
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extern init_cygheap *cygheap;
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extern void *cygheap_max;
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2001-07-17 05:41:52 +02:00
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class child_info;
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void __stdcall cygheap_setup_for_child (child_info *ci) __attribute__ ((regparm(1)));
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2001-08-04 23:10:52 +02:00
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void __stdcall cygheap_setup_for_child_cleanup (child_info *ci) __attribute__ ((regparm(1)));
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2001-07-17 05:41:52 +02:00
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void __stdcall cygheap_fixup_in_child (child_info *, bool);
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2000-09-03 06:16:35 +02:00
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extern "C" {
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2000-10-17 01:55:58 +02:00
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void __stdcall cfree (void *) __attribute__ ((regparm(1)));
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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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2000-10-02 04:26:04 +02:00
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void __stdcall cygheap_init ();
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2000-09-03 06:16:35 +02:00
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}
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