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Diffstat (limited to 'winsup/cygwin/cygheap.h')
| -rw-r--r-- | winsup/cygwin/cygheap.h | 435 |
1 files changed, 0 insertions, 435 deletions
diff --git a/winsup/cygwin/cygheap.h b/winsup/cygwin/cygheap.h deleted file mode 100644 index 100d8d92d..000000000 --- a/winsup/cygwin/cygheap.h +++ /dev/null @@ -1,435 +0,0 @@ -/* cygheap.h: Cygwin heap manager. - - Copyright 2000, 2001, 2002, 2003, 2004, 2005 Red Hat, Inc. - -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. */ - -#include "hires.h" - -#undef cfree - -enum cygheap_types -{ - HEAP_FHANDLER, - HEAP_STR, - HEAP_ARGV, - HEAP_BUF, - HEAP_MOUNT, - HEAP_SIGS, - HEAP_ARCHETYPES, - HEAP_TLS, - HEAP_COMMUNE, - HEAP_1_START, - HEAP_1_HOOK, - HEAP_1_STR, - HEAP_1_ARGV, - HEAP_1_BUF, - HEAP_1_EXEC, - HEAP_1_MAX = 100, - HEAP_MMAP = 200 -}; - -#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]; -}; - -struct cygheap_root_mount_info -{ - char posix_path[CYG_MAX_PATH]; - unsigned posix_pathlen; - char native_path[CYG_MAX_PATH]; - unsigned native_pathlen; -}; - -/* CGF: FIXME This doesn't belong here */ - -class cygheap_root -{ - /* Root directory information. - This is used after a chroot is called. */ - struct cygheap_root_mount_info *m; - -public: - bool posix_ok (const char *path) - { - if (!m) - return 1; - return path_prefix_p (m->posix_path, path, m->posix_pathlen); - } - bool ischroot_native (const char *path) - { - if (!m) - return 1; - return strncasematch (m->native_path, path, m->native_pathlen) - && (path[m->native_pathlen] == '\\' || !path[m->native_pathlen]); - } - const char *unchroot (const char *path) - { - if (!m) - return path; - const char *p = path + m->posix_pathlen; - if (!*p) - p = "/"; - return p; - } - bool exists () {return !!m;} - void set (const char *, const char *); - size_t posix_length () const { return m->posix_pathlen; } - const char *posix_path () const { return m->posix_path; } - size_t native_length () const { return m->native_pathlen; } - const char *native_path () const { return m->native_path; } -}; - -enum homebodies -{ - CH_HOMEDRIVE, - CH_HOMEPATH, - CH_HOME -}; - -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 */ - char *homedrive; /* User's home drive */ - char *homepath; /* User's home path */ - char *psystemroot; /* Value of SYSTEMROOT */ - char *pwinname; /* User's name as far as Windows knows it */ - char *puserprof; /* User profile */ - cygsid effec_cygsid; /* buffer for user's SID */ - cygsid saved_cygsid; /* Remains intact even after impersonation */ -public: - __uid32_t saved_uid; /* Remains intact even after impersonation */ - __gid32_t saved_gid; /* Ditto */ - __uid32_t real_uid; /* Remains intact on seteuid, replaced by setuid */ - __gid32_t real_gid; /* Ditto */ - user_groups groups; /* Primary and supp SIDs */ - - /* token is needed if set(e)uid should be called. It can be set by a call - to `set_impersonation_token()'. */ - HANDLE external_token; - HANDLE internal_token; - HANDLE curr_primary_token; - HANDLE current_token; - - /* CGF 2002-06-27. I removed the initializaton from this constructor - since this class is always allocated statically. That means that everything - is zero anyway so there is no need to initialize it to zero. Since the - token initialization is always handled during process startup as well, - I've removed the constructor entirely. Please reinstate this if this - situation ever changes. - cygheap_user () : pname (NULL), plogsrv (NULL), pdomain (NULL), - homedrive (NULL), homepath (NULL), - token (INVALID_HANDLE_VALUE) {} - */ - - ~cygheap_user (); - - void init (); - void set_name (const char *new_name); - const char *name () const { return pname; } - - const char *env_logsrv (const char *, size_t); - const char *env_homepath (const char *, size_t); - const char *env_homedrive (const char *, size_t); - const char *env_userprofile (const char *, size_t); - const char *env_domain (const char *, size_t); - const char *env_name (const char *, size_t); - const char *env_systemroot (const char *, size_t); - - const char *logsrv () - { - const char *p = env_logsrv ("LOGONSERVER=", sizeof ("LOGONSERVER=") - 1); - return (p == almost_null) ? NULL : p; - } - const char *winname () - { - const char *p = env_name ("USERNAME=", sizeof ("USERNAME=") - 1); - return (p == almost_null) ? NULL : p; - } - const char *domain () - { - const char *p = env_domain ("USERDOMAIN=", sizeof ("USERDOMAIN=") - 1); - return (p == almost_null) ? NULL : p; - } - BOOL set_sid (PSID new_sid) {return (BOOL) (effec_cygsid = new_sid);} - BOOL set_saved_sid () { return (BOOL) (saved_cygsid = effec_cygsid); } - PSID sid () { return effec_cygsid; } - PSID saved_sid () { return saved_cygsid; } - const char *ontherange (homebodies what, struct passwd * = NULL); -#define NO_IMPERSONATION NULL - bool issetuid () const { return current_token != NO_IMPERSONATION; } - HANDLE primary_token () { return curr_primary_token; } - HANDLE token () { return current_token; } - void deimpersonate () - { - if (issetuid ()) - { - RevertToSelf (); - ImpersonateLoggedOnUser (hProcImpToken); - } - } - bool reimpersonate () - { - return ImpersonateLoggedOnUser (issetuid () ? token () : hProcImpToken); - } - bool has_impersonation_tokens () - { return external_token != NO_IMPERSONATION - || internal_token != NO_IMPERSONATION - || curr_primary_token != NO_IMPERSONATION; } - void close_impersonation_tokens () - { - if (current_token != NO_IMPERSONATION) - CloseHandle (current_token); - if (curr_primary_token != NO_IMPERSONATION - && curr_primary_token != external_token - && curr_primary_token != internal_token) - CloseHandle (curr_primary_token); - if (external_token != NO_IMPERSONATION) - CloseHandle (external_token); - if (internal_token != NO_IMPERSONATION) - CloseHandle (internal_token); - } - char * get_windows_id (char * buf) - { - if (wincap.is_winnt ()) - return effec_cygsid.string (buf); - else - return strcpy (buf, name ()); - } - - const char *cygheap_user::test_uid (char *&, const char *, size_t) - __attribute__ ((regparm (3))); -}; - -/* cwd cache stuff. */ - -class muto; - -struct cwdstuff -{ - char *posix; - char *win32; - DWORD hash; - DWORD drive_length; - static muto cwd_lock; - char *get (char *, int = 1, int = 0, unsigned = CYG_MAX_PATH); - DWORD get_hash (); - DWORD get_drive (char * dst) - { - get_initial (); - memcpy (dst, win32, drive_length); - cwd_lock.release (); - return drive_length; - } - void init (); - void fixup_after_exec (char *, char *, DWORD); - bool get_initial (); - int set (const char *, const char *, bool); -}; - -#ifdef DEBUGGING -struct cygheap_debug -{ - handle_list starth; - handle_list *endh; - handle_list freeh[500]; -}; -#endif - -struct user_heap_info -{ - void *base; - void *ptr; - void *top; - void *max; - unsigned chunk; -}; - -struct hook_chain -{ - void **loc; - const void *func; - struct hook_chain *next; -}; - -struct init_cygheap -{ - _cmalloc_entry *chain; - char *buckets[32]; - cygheap_root root; - cygheap_user user; - user_heap_info user_heap; - mode_t umask; - HANDLE shared_h; - HANDLE console_h; - HANDLE mt_h; - cwdstuff cwd; - dtable fdtab; - LUID luid[SE_NUM_PRIVS]; - const char *shared_prefix; -#ifdef DEBUGGING - cygheap_debug debug; -#endif - struct sigaction *sigs; - - fhandler_tty_slave *ctty; /* Current tty */ -#ifdef NEWVFORK - fhandler_tty_slave *ctty_on_hold; -#endif - struct _cygtls **threadlist; - size_t sthreads; - pid_t pid; /* my pid */ - HANDLE pid_handle; /* handle for my pid */ - hook_chain hooks; - void close_ctty (); - int manage_console_count (const char *, int, bool = false) __attribute__ ((regparm (3))); -private: - int console_count; -}; - - -#define _CYGHEAPSIZE_SLOP (128 * 1024) -#define CYGHEAPSIZE (sizeof (init_cygheap) + (20000 * sizeof (fhandler_union)) + _CYGHEAPSIZE_SLOP) -#define CYGHEAPSIZE_MIN (sizeof (init_cygheap) + (10000 * sizeof (fhandler_union))) - -extern init_cygheap *cygheap; -extern void *cygheap_max; - -class cygheap_fdmanip -{ - protected: - int fd; - fhandler_base **fh; - bool locked; - public: - cygheap_fdmanip (): fh (NULL) {} - virtual ~cygheap_fdmanip () - { - if (locked) - cygheap->fdtab.unlock (); - } - void release () - { - cygheap->fdtab.release (fd); - } - operator int &() {return fd;} - operator fhandler_base* &() {return *fh;} - operator fhandler_socket* () const {return reinterpret_cast<fhandler_socket *> (*fh);} - operator fhandler_pipe* () const {return reinterpret_cast<fhandler_pipe *> (*fh);} - void operator = (fhandler_base *fh) {*this->fh = fh;} - fhandler_base *operator -> () const {return *fh;} - bool isopen () const - { - if (*fh) - return true; - set_errno (EBADF); - return false; - } -}; - -class cygheap_fdnew : public cygheap_fdmanip -{ - public: - cygheap_fdnew (int seed_fd = -1, bool lockit = true) - { - if (lockit) - cygheap->fdtab.lock (); - if (seed_fd < 0) - fd = cygheap->fdtab.find_unused_handle (); - else - fd = cygheap->fdtab.find_unused_handle (seed_fd + 1); - if (fd >= 0) - { - locked = lockit; - fh = cygheap->fdtab + fd; - } - else - { - set_errno (EMFILE); - if (lockit) - cygheap->fdtab.unlock (); - locked = false; - } - } - void operator = (fhandler_base *fh) {*this->fh = fh;} -}; - -class cygheap_fdget : public cygheap_fdmanip -{ - public: - cygheap_fdget (int fd, bool lockit = false, bool do_set_errno = true) - { - if (lockit) - cygheap->fdtab.lock (); - if (fd >= 0 && fd < (int) cygheap->fdtab.size - && *(fh = cygheap->fdtab + fd) != NULL) - { - this->fd = fd; - locked = lockit; - } - else - { - this->fd = -1; - if (do_set_errno) - set_errno (EBADF); - if (lockit) - cygheap->fdtab.unlock (); - locked = false; - } - } -}; - -class cygheap_fdenum : public cygheap_fdmanip -{ - public: - cygheap_fdenum (bool lockit = false) - { - locked = lockit; - if (lockit) - cygheap->fdtab.lock (); - fd = -1; - } - int next () - { - while (++fd < (int) cygheap->fdtab.size) - if (*(fh = cygheap->fdtab + fd) != NULL) - return fd; - return -1; - } - void rewind () - { - fd = -1; - } -}; - -class child_info; -void __stdcall cygheap_fixup_in_child (bool); -extern "C" { -void __stdcall cfree (void *) __attribute__ ((regparm(1))); -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 cfree_and_set (char *&, char * = NULL) __attribute__ ((regparm(2))); -void __stdcall cygheap_init (); -extern char _cygheap_start[] __attribute__((section(".idata"))); -} |