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-rw-r--r--winsup/cygwin/shared.h552
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diff --git a/winsup/cygwin/shared.h b/winsup/cygwin/shared.h
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--- a/winsup/cygwin/shared.h
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-/* shared.h: shared info for cygwin
-
- Copyright 1998, 1999, 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. */
-
-/******** Functions declarations for use in methods below ********/
-
-/* Printf type functions */
-extern "C" void __api_fatal (const char *, ...) __attribute__ ((noreturn));
-extern "C" int __small_sprintf (char *dst, const char *fmt, ...);
-extern "C" int __small_vsprintf (char *dst, const char *fmt, va_list ap);
-extern "C" int __small_sprintf (char *dst, const char *fmt, ...);
-
-/******** Deletion Queue Class ********/
-
-/* First pass at a file deletion queue structure.
-
- We can't keep this list in the per-process info, since
- one process may open a file, and outlive a process which
- wanted to unlink the file - and the data would go away.
-
- Perhaps the FILE_FLAG_DELETE_ON_CLOSE would be ok,
- but brief experimentation didn't get too far.
-*/
-
-#define MAX_DELQUEUES_PENDING 100
-
-class delqueue_list
-{
- char name[MAX_DELQUEUES_PENDING][MAX_PATH];
- char inuse[MAX_DELQUEUES_PENDING];
- int empty;
-
-public:
- void init ();
- void queue_file (const char *dosname);
- void process_queue ();
-};
-
-/******** Process Table ********/
-
-/* Signal constants (have to define them here, unfortunately) */
-
-enum
-{
- __SIGFLUSH = -2,
- __SIGSTRACE = -1,
- __SIGCHILDSTOPPED = 0,
- __SIGOFFSET = 3
-};
-
-class pinfo
-{
- public:
-
- /* If hProcess is set, it's because it came from a
- CreateProcess call. This means it's process relative
- to the thing which created the process. That's ok because
- we only use this handle from the parent. */
- HANDLE hProcess;
-
- HANDLE parent_alive;
-
- /* dwProcessId contains the processid used for sending signals. It
- * will be reset in a child process when it is capable of receiving
- * signals.
- */
- DWORD dwProcessId;
-
- /* User information.
- The information is derived from the GetUserName system call,
- with the name looked up in /etc/passwd and assigned a default value
- if not found. This data resides in the shared data area (allowing
- tasks to store whatever they want here) so it's for informational
- purposes only. */
- uid_t uid; /* User ID */
- gid_t gid; /* Group ID */
- pid_t pgid; /* Process group ID */
- pid_t sid; /* Session ID */
- int ctty; /* Control tty */
- mode_t umask;
- char username[MAX_USER_NAME]; /* user's name */
-
- /* Extendend user information.
- The information is derived from the internal_getlogin call
- when on a NT system. */
- PSID psid; /* user's SID */
- char sidbuf[40]; /* buffer for user's SID */
- char logsrv[256]; /* Logon server, may be fully qualified DNS name */
- char domain[MAX_COMPUTERNAME_LENGTH+1]; /* Logon domain of the user */
-
- /* Non-zero if process was stopped by a signal. */
- char stopsig;
-
- struct sigaction& getsig (int);
- void copysigs (pinfo *);
- sigset_t& getsigmask ();
- void setsigmask (sigset_t);
- LONG* getsigtodo (int);
- HANDLE getthread2signal ();
- void setthread2signal (void *);
-
- /* Resources used by process. */
- long start_time;
- struct rusage rusage_self;
- struct rusage rusage_children;
-
-private:
- struct sigaction sigs[NSIG];
- sigset_t sig_mask; /* one set for everything to ignore. */
- LONG _sigtodo[NSIG + __SIGOFFSET];
-#ifdef _MT_SAFE
- ThreadItem* thread2signal; // NULL means means thread any other means a pthread
-#endif
-
-public:
-
- /* Pointer to mmap'ed areas for this process. Set up by fork. */
- void *mmap_ptr;
-
- /* Used to spawn a child for fork(), among other things. */
- char progname[MAX_PATH];
-
- #define PINFO_ZERO ((((pinfo *) NULL)->progname + 1) - ((char *) NULL))
-
- /* Anything below this point is not zeroed automatically by allocate_pid */
-
- /* The pid stays the same, while the hProcess moves due to execs. */
- pid_t pid;
- /* Parent process id. */
- pid_t ppid;
-
- /* Various flags indicating the state of the process. See PID_
- constants below. */
- DWORD process_state;
-
- void record_death (int lock = 1);
-};
-
-#define ISSTATE(p, f) (!!((p)->process_state & f))
-#define NOTSTATE(p, f) (!((p)->process_state & f))
-
-/* Flags associated with process_state */
-enum
-{
- PID_NOT_IN_USE = 0x0000, // Free entry.
- PID_IN_USE = 0x0001, // Entry in use.
- PID_ZOMBIE = 0x0002, // Child exited: no parent wait.
- PID_STOPPED = 0x0004, // Waiting for SIGCONT.
- PID_TTYIN = 0x0008, // Waiting for terminal input.
- PID_TTYOU = 0x0010, // Waiting for terminal output.
- PID_ORPHANED = 0x0020, // Member of an orphaned process group.
- PID_ACTIVE = 0x0040, // Pid accepts signals.
- PID_CYGPARENT = 0x0080, // Set if parent was a cygwin app.
- PID_SPLIT_HEAP = 0x0100, // Set if the heap has been split,
- // which means we can't fork again.
- PID_CLEAR = 0x0200, // Flag that pid should be cleared from parent's
- // wait list
- PID_SOCKETS_USED = 0x0400, // Set if process uses Winsock.
- PID_INITIALIZING = 0x0800, // Set until ready to receive signals.
- PID_USETTY = 0x1000, // Setting this enables or disables cygwin's
- // tty support. This is inherited by
- // all execed or forked processes.
- PID_REPARENT = 0x2000 // child has execed
-};
-
-#define PSIZE 128
-
-class pinfo_list
-{
- public:
- int next_pid;
- pinfo vec[PSIZE];
- char lock_info[MAX_PATH + 1];
- pinfo * operator[] (pid_t x);
- int size (void) { return PSIZE; }
- pinfo *allocate_pid (void);
- void init (void);
-};
-
-void __stdcall pinfo_init (PBYTE);
-pinfo *__stdcall procinfo (int n);
-
-enum
-{
- PROC_MAGIC = 0xaf04f000,
- PROC_FORK = PROC_MAGIC + 1,
- PROC_EXEC = PROC_MAGIC + 2,
- PROC_SPAWN = PROC_MAGIC + 3,
- PROC_FORK1 = PROC_MAGIC + 4 // Newer versions provide stack
- // location information
-};
-
-#define PROC_MAGIC_MASK 0xff00f000
-#define PROC_MAGIC_GENERIC 0xaf00f000
-#define PROC_MAGIC_VER_MASK 0x0ff0000
-
-#define EXEC_MAGIC_SIZE sizeof(child_info)
-class child_info
-{
-public:
- DWORD zero[1]; // must be zeroed
- DWORD cb; // size of this record
- DWORD type; // type of record
- int cygpid; // cygwin pid of child process
- HANDLE subproc_ready; // used for synchronization with parent
- HANDLE shared_h;
- HANDLE console_h;
- HANDLE parent_alive; // handle of thread used to track children
-};
-
-class child_info_fork: public child_info
-{
-public:
- HANDLE forker_finished;// for synchronization with child
- DWORD stacksize; // size of parent stack
- void *heaptop;
- void *heapbase;
- void *heapptr;
- jmp_buf jmp; // where child will jump to
- void *stacktop; // location of top of parent stack
- void *stackbottom; // location of bottom of parent stack
-};
-
-void __stdcall init_child_info (DWORD, child_info *, int, HANDLE);
-
-extern child_info_fork *child_proc_info;
-
-/* Process info for this process */
-extern pinfo *myself;
-
-/* non-NULL if this process is a child of a cygwin process */
-extern HANDLE parent_alive;
-
-/******** Registry Access ********/
-
-class reg_key
-{
-private:
-
- HKEY key;
-
-public:
-
- reg_key (HKEY toplev, REGSAM access, ...);
- reg_key (REGSAM access, ...);
- reg_key (REGSAM access = KEY_ALL_ACCESS);
-
- void *operator new (size_t, void *p) {return p;}
- void build_reg (HKEY key, REGSAM access, va_list av);
-
- int error () {return key == (HKEY) INVALID_HANDLE_VALUE;}
-
- int kill (const char *child);
-
- HKEY get_key ();
- int get_int (const char *,int def);
- int get_string (const char *, char *buf, size_t len, const char *def);
- int set_string (const char *,const char *);
- int set_int (const char *, int val);
- int setone_string (const char *src, const char *name);
-
- ~reg_key ();
-};
-
-/******** Mount Table ********/
-
-/* Mount table entry */
-
-class mount_item
-{
-public:
- /* FIXME: Nasty static allocation. Need to have a heap in the shared
- area [with the user being able to configure at runtime the max size]. */
-
- /* Win32-style mounted partition source ("C:\foo\bar").
- native_path[0] == 0 for unused entries. */
- char native_path[MAX_PATH];
- int native_pathlen;
-
- /* POSIX-style mount point ("/foo/bar") */
- char posix_path[MAX_PATH];
- int posix_pathlen;
-
- unsigned flags;
-
- void init (const char *dev, const char *path, unsigned flags);
-
- struct mntent *getmntent ();
-};
-
-/* Warning: Decreasing this value will cause cygwin.dll to ignore existing
- higher numbered registry entries. Don't change this number willy-nilly.
- What we need is to have a more dynamic allocation scheme, but the current
- scheme should be satisfactory for a long while yet. */
-#define MAX_MOUNTS 30
-
-class mount_info
-{
- int posix_sorted[MAX_MOUNTS];
- int native_sorted[MAX_MOUNTS];
-public:
- int nmounts;
- mount_item mount[MAX_MOUNTS];
-
- /* Strings used by getmntent(). */
- char mnt_type[20];
- char mnt_opts[20];
- char mnt_fsname[MAX_PATH];
- char mnt_dir[MAX_PATH];
-
- /* cygdrive_prefix is used as the root of the path automatically
- prepended to a path when the path has no associated mount.
- cygdrive_flags are the default flags for the cygdrives. */
- char cygdrive[MAX_PATH];
- size_t cygdrive_len;
- unsigned cygdrive_flags;
-
- /* Increment when setting up a reg_key if mounts area had to be
- created so we know when we need to import old mount tables. */
- int had_to_create_mount_areas;
-
- void init ();
- int add_item (const char *dev, const char *path, unsigned flags);
- int del_item (const char *path, unsigned flags);
-
- void from_registry ();
- void from_v1_registry ();
- int add_reg_mount (const char * native_path, const char * posix_path,
- unsigned mountflags);
- int del_reg_mount (const char * posix_path, unsigned mountflags);
-
- unsigned set_flags_from_win32_path (const char *path);
- int conv_to_win32_path (const char *src_path, char *win32_path,
- char *full_win32_path, DWORD &devn, int &unit,
- unsigned *flags = NULL);
- int conv_to_posix_path (const char *src_path, char *posix_path,
- int keep_rel_p);
- struct mntent *getmntent (int x);
-
- int write_cygdrive_info_to_registry (const char *cygdrive_prefix, unsigned flags);
-
- void import_v1_mounts ();
-
-private:
-
- void sort ();
- void read_mounts (reg_key& r);
- void read_v1_mounts (reg_key r, unsigned which);
- void mount_slash ();
- void to_registry ();
-
- int cygdrive_win32_path (const char *src, char *dst, int trailing_slash_p);
- void cygdrive_posix_path (const char *src, char *dst, int trailing_slash_p);
- void slash_drive_to_win32_path (const char *path, char *buf, int trailing_slash_p);
- void read_cygdrive_info_from_registry ();
-};
-
-/******** TTY Support ********/
-
-/* tty tables */
-
-#define INP_BUFFER_SIZE 256
-#define OUT_BUFFER_SIZE 256
-#define NTTYS 128
-#define TTY_CONSOLE 0x40000000
-#define tty_attached(p) ((p)->ctty >= 0 && (p)->ctty != TTY_CONSOLE)
-
-/* Input/Output/ioctl events */
-
-#define OUTPUT_DONE_EVENT "cygtty%d.output.done"
-#define IOCTL_REQUEST_EVENT "cygtty%d.ioctl.request"
-#define IOCTL_DONE_EVENT "cygtty%d.ioctl.done"
-#define RESTART_OUTPUT_EVENT "cygtty%d.output.restart"
-#define OUTPUT_MUTEX "cygtty%d.output.mutex"
-#define TTY_SLAVE_ALIVE "cygtty%x.slave_alive"
-#define TTY_MASTER_ALIVE "cygtty%x.master_alive"
-
-#include <sys/termios.h>
-
-enum
-{
- TTY_INITIALIZED = 1, /* Set if tty is initialized */
- TTY_RSTCONS = 2 /* Set if console needs to be set to "non-cooked" */
-};
-
-#define TTYISSETF(x) __ISSETF (tc, x, TTY)
-#define TTYSETF(x) __SETF (tc, x, TTY)
-#define TTYCLEARF(x) __CLEARF (tc, x, TTY)
-#define TTYCONDSETF(n, x) __CONDSETF(n, tc, x, TTY)
-
-#ifndef MIN_CTRL_C_SLOP
-#define MIN_CTRL_C_SLOP 50
-#endif
-
-class tty_min
-{
- pid_t sid; /* Session ID of tty */
-public:
- DWORD status;
- pid_t pgid;
- int OutputStopped;
- int ntty;
- DWORD last_ctrl_c; // tick count of last ctrl-c
-
- tty_min (int t = -1, pid_t s = -1) : sid (s), ntty (t) {}
- void setntty (int n) {ntty = n;}
- pid_t getpgid () {return pgid;}
- void setpgid (int pid) {pgid = pid;}
- int getsid () {return sid;}
- void setsid (pid_t tsid) {sid = tsid;}
- struct termios ti;
- struct winsize winsize;
-
- /* ioctl requests buffer */
- int cmd;
- union
- {
- struct termios termios;
- struct winsize winsize;
- int value;
- pid_t pid;
- } arg;
- /* XXX_retval variables holds master's completion codes. Error are stored as
- * -ERRNO
- */
- int ioctl_retval;
-
- int write_retval;
-};
-
-class fhandler_pty_master;
-
-class tty: public tty_min
-{
- HANDLE get_event (const char *fmt, BOOL inherit);
-public:
- HWND hwnd; /* Console window handle tty belongs to */
-
- DWORD master_pid; /* Win32 PID of tty master process */
-
- HANDLE from_master, to_slave;
- HANDLE from_slave, to_master;
-
- int read_retval;
- BOOL was_opened; /* True if opened at least once. */
-
- void init ();
- HANDLE create_inuse (const char *);
- BOOL common_init (fhandler_pty_master *);
- BOOL alive (const char *fmt);
- BOOL slave_alive ();
- BOOL master_alive ();
- HWND gethwnd () {return hwnd;}
- void sethwnd (HWND wnd) {hwnd = wnd;}
- int make_pipes (fhandler_pty_master *ptym);
- HANDLE open_output_mutex (BOOL inherit = FALSE)
- {
- char buf[80];
- __small_sprintf (buf, OUTPUT_MUTEX, ntty);
- return OpenMutex (MUTEX_ALL_ACCESS, inherit, buf);
- }
- BOOL exists ()
- {
- HANDLE h = open_output_mutex ();
- if (h)
- {
- CloseHandle (h);
- return 1;
- }
- return slave_alive ();
- }
-};
-
-class tty_list
-{
- tty ttys[NTTYS];
-
-public:
- tty * operator [](int n) {return ttys + n;}
- int allocate_tty (int n); /* n non zero if allocate a tty, pty otherwise */
- int connect_tty (int);
- void terminate ();
- void init ();
- tty_min *get_tty (int n);
-};
-
-void __stdcall tty_init ();
-void __stdcall tty_terminate ();
-int __stdcall attach_tty (int);
-void __stdcall create_tty_master (int);
-extern "C" int ttyslot (void);
-
-/******** Shared Info ********/
-/* Data accessible to all tasks */
-
-class shared_info
-{
- DWORD inited;
-
-public:
- pinfo_list p;
-
- /* FIXME: Doesn't work if more than one user on system. */
- mount_info mount;
-
- int heap_chunk_in_mb;
- unsigned heap_chunk_size (void);
-
- tty_list tty;
- delqueue_list delqueue;
- void initialize (void);
-};
-
-/* Various types of security attributes for use in Create* functions. */
-extern SECURITY_ATTRIBUTES sec_none, sec_none_nih, sec_all, sec_all_nih;
-extern SECURITY_ATTRIBUTES *__stdcall sec_user (PVOID sa_buf, PSID sid2 = NULL, BOOL inherit = TRUE);
-extern SECURITY_ATTRIBUTES *__stdcall sec_user_nih (PVOID sa_buf, PSID sid2 = NULL);
-
-extern shared_info *cygwin_shared;
-extern HANDLE cygwin_shared_h;
-extern HANDLE console_shared_h;
-extern int __stdcall set_console_state_for_spawn ();
-
-void __stdcall shared_init (void);
-void __stdcall shared_terminate (void);
-
-/* This is for programs that want to access the shared data. */
-extern "C" class shared_info *cygwin_getshared (void);
-
-char *__stdcall shared_name (const char *, int);
-void *__stdcall open_shared (const char *name, HANDLE &shared_h, DWORD size, void *addr);
-
-struct cygwin_version_info
-{
- unsigned short api_major;
- unsigned short api_minor;
- unsigned short dll_major;
- unsigned short dll_minor;
- unsigned short shared_data;
- unsigned short mount_registry;
- const char *dll_build_date;
- const char shared_id[sizeof (CYGWIN_VERSION_DLL_IDENTIFIER) + 64];
-};
-
-extern cygwin_version_info cygwin_version;
-extern const char *cygwin_version_strings;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-05 14:47:07 +0300