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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2015 Anton Ivanov (aivanov@{brocade.com,kot-begemot.co.uk})
4 * Copyright (C) 2015 Thomas Meyer (thomas@m3y3r.de)
5 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
6 */
7
8#ifndef __OS_H__
9#define __OS_H__
10
11#include <irq_user.h>
12#include <longjmp.h>
13#include <mm_id.h>
14/* This is to get size_t */
15#ifndef __UM_HOST__
16#include <linux/types.h>
17#else
18#include <sys/types.h>
19#endif
20
21#define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR))
22
23#define OS_TYPE_FILE 1
24#define OS_TYPE_DIR 2
25#define OS_TYPE_SYMLINK 3
26#define OS_TYPE_CHARDEV 4
27#define OS_TYPE_BLOCKDEV 5
28#define OS_TYPE_FIFO 6
29#define OS_TYPE_SOCK 7
30
31/* os_access() flags */
32#define OS_ACC_F_OK 0 /* Test for existence. */
33#define OS_ACC_X_OK 1 /* Test for execute permission. */
34#define OS_ACC_W_OK 2 /* Test for write permission. */
35#define OS_ACC_R_OK 4 /* Test for read permission. */
36#define OS_ACC_RW_OK (OS_ACC_W_OK | OS_ACC_R_OK) /* Test for RW permission */
37
38#ifdef CONFIG_64BIT
39#define OS_LIB_PATH "/usr/lib64/"
40#else
41#define OS_LIB_PATH "/usr/lib/"
42#endif
43
44#define OS_SENDMSG_MAX_FDS 8
45
46/*
47 * types taken from stat_file() in hostfs_user.c
48 * (if they are wrong here, they are wrong there...).
49 */
50struct uml_stat {
51 int ust_dev; /* device */
52 unsigned long long ust_ino; /* inode */
53 int ust_mode; /* protection */
54 int ust_nlink; /* number of hard links */
55 int ust_uid; /* user ID of owner */
56 int ust_gid; /* group ID of owner */
57 unsigned long long ust_size; /* total size, in bytes */
58 int ust_blksize; /* blocksize for filesystem I/O */
59 unsigned long long ust_blocks; /* number of blocks allocated */
60 unsigned long ust_atime; /* time of last access */
61 unsigned long ust_mtime; /* time of last modification */
62 unsigned long ust_ctime; /* time of last change */
63};
64
65struct openflags {
66 unsigned int r : 1;
67 unsigned int w : 1;
68 unsigned int s : 1; /* O_SYNC */
69 unsigned int c : 1; /* O_CREAT */
70 unsigned int t : 1; /* O_TRUNC */
71 unsigned int a : 1; /* O_APPEND */
72 unsigned int e : 1; /* O_EXCL */
73 unsigned int cl : 1; /* FD_CLOEXEC */
74};
75
76#define OPENFLAGS() ((struct openflags) { .r = 0, .w = 0, .s = 0, .c = 0, \
77 .t = 0, .a = 0, .e = 0, .cl = 0 })
78
79static inline struct openflags of_read(struct openflags flags)
80{
81 flags.r = 1;
82 return flags;
83}
84
85static inline struct openflags of_write(struct openflags flags)
86{
87 flags.w = 1;
88 return flags;
89}
90
91static inline struct openflags of_rdwr(struct openflags flags)
92{
93 return of_read(of_write(flags));
94}
95
96static inline struct openflags of_set_rw(struct openflags flags, int r, int w)
97{
98 flags.r = r;
99 flags.w = w;
100 return flags;
101}
102
103static inline struct openflags of_sync(struct openflags flags)
104{
105 flags.s = 1;
106 return flags;
107}
108
109static inline struct openflags of_create(struct openflags flags)
110{
111 flags.c = 1;
112 return flags;
113}
114
115static inline struct openflags of_trunc(struct openflags flags)
116{
117 flags.t = 1;
118 return flags;
119}
120
121static inline struct openflags of_append(struct openflags flags)
122{
123 flags.a = 1;
124 return flags;
125}
126
127static inline struct openflags of_excl(struct openflags flags)
128{
129 flags.e = 1;
130 return flags;
131}
132
133static inline struct openflags of_cloexec(struct openflags flags)
134{
135 flags.cl = 1;
136 return flags;
137}
138
139/* file.c */
140extern int os_stat_file(const char *file_name, struct uml_stat *buf);
141extern int os_stat_fd(const int fd, struct uml_stat *buf);
142extern int os_access(const char *file, int mode);
143extern int os_set_exec_close(int fd);
144extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg);
145extern int os_get_ifname(int fd, char *namebuf);
146extern int os_set_slip(int fd);
147extern int os_mode_fd(int fd, int mode);
148extern int os_fsync_file(int fd);
149
150extern int os_seek_file(int fd, unsigned long long offset);
151extern int os_open_file(const char *file, struct openflags flags, int mode);
152extern int os_read_file(int fd, void *buf, int len);
153extern int os_write_file(int fd, const void *buf, int count);
154extern int os_sync_file(int fd);
155extern int os_file_size(const char *file, unsigned long long *size_out);
156extern int os_pread_file(int fd, void *buf, int len, unsigned long long offset);
157extern int os_pwrite_file(int fd, const void *buf, int count, unsigned long long offset);
158extern int os_file_modtime(const char *file, long long *modtime);
159extern int os_pipe(int *fd, int stream, int close_on_exec);
160extern int os_set_fd_async(int fd);
161extern int os_clear_fd_async(int fd);
162extern int os_set_fd_block(int fd, int blocking);
163extern int os_accept_connection(int fd);
164extern int os_create_unix_socket(const char *file, int len, int close_on_exec);
165extern int os_shutdown_socket(int fd, int r, int w);
166extern void os_close_file(int fd);
167extern int os_rcv_fd(int fd, int *helper_pid_out);
168extern int os_connect_socket(const char *name);
169extern int os_file_type(char *file);
170extern int os_file_mode(const char *file, struct openflags *mode_out);
171extern int os_lock_file(int fd, int excl);
172extern void os_flush_stdout(void);
173extern unsigned os_major(unsigned long long dev);
174extern unsigned os_minor(unsigned long long dev);
175extern unsigned long long os_makedev(unsigned major, unsigned minor);
176extern int os_falloc_punch(int fd, unsigned long long offset, int count);
177extern int os_falloc_zeroes(int fd, unsigned long long offset, int count);
178extern int os_eventfd(unsigned int initval, int flags);
179extern int os_sendmsg_fds(int fd, const void *buf, unsigned int len,
180 const int *fds, unsigned int fds_num);
181int os_poll(unsigned int n, const int *fds);
182
183/* start_up.c */
184extern void os_early_checks(void);
185extern void os_check_bugs(void);
186extern void check_host_supports_tls(int *supports_tls, int *tls_min);
187extern void get_host_cpu_features(
188 void (*flags_helper_func)(char *line),
189 void (*cache_helper_func)(char *line));
190
191/* mem.c */
192extern int create_mem_file(unsigned long long len);
193
194/* process.c */
195extern unsigned long os_process_pc(int pid);
196extern int os_process_parent(int pid);
197extern void os_alarm_process(int pid);
198extern void os_stop_process(int pid);
199extern void os_kill_process(int pid, int reap_child);
200extern void os_kill_ptraced_process(int pid, int reap_child);
201
202extern int os_getpid(void);
203extern int os_getpgrp(void);
204
205extern void init_new_thread_signals(void);
206
207extern int os_map_memory(void *virt, int fd, unsigned long long off,
208 unsigned long len, int r, int w, int x);
209extern int os_protect_memory(void *addr, unsigned long len,
210 int r, int w, int x);
211extern int os_unmap_memory(void *addr, int len);
212extern int os_drop_memory(void *addr, int length);
213extern int can_drop_memory(void);
214extern int os_mincore(void *addr, unsigned long len);
215
216/* execvp.c */
217extern int execvp_noalloc(char *buf, const char *file, char *const argv[]);
218/* helper.c */
219extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv);
220extern int run_helper_thread(int (*proc)(void *), void *arg,
221 unsigned int flags, unsigned long *stack_out);
222extern int helper_wait(int pid);
223
224
225/* umid.c */
226extern int umid_file_name(char *name, char *buf, int len);
227extern int set_umid(char *name);
228extern char *get_umid(void);
229
230/* signal.c */
231extern void timer_set_signal_handler(void);
232extern void set_sigstack(void *sig_stack, int size);
233extern void set_handler(int sig);
234extern void send_sigio_to_self(void);
235extern int change_sig(int signal, int on);
236extern void block_signals(void);
237extern void unblock_signals(void);
238extern int um_set_signals(int enable);
239extern int um_set_signals_trace(int enable);
240extern int os_is_signal_stack(void);
241extern void deliver_alarm(void);
242extern void register_pm_wake_signal(void);
243extern void block_signals_hard(void);
244extern void unblock_signals_hard(void);
245extern void mark_sigio_pending(void);
246
247/* util.c */
248extern void stack_protections(unsigned long address);
249extern int raw(int fd);
250extern void setup_machinename(char *machine_out);
251extern void setup_hostinfo(char *buf, int len);
252extern ssize_t os_getrandom(void *buf, size_t len, unsigned int flags);
253extern void os_dump_core(void) __attribute__ ((noreturn));
254extern void um_early_printk(const char *s, unsigned int n);
255extern void os_fix_helper_signals(void);
256extern void os_info(const char *fmt, ...)
257 __attribute__ ((format (printf, 1, 2)));
258extern void os_warn(const char *fmt, ...)
259 __attribute__ ((format (printf, 1, 2)));
260
261/* time.c */
262extern void os_idle_sleep(void);
263extern int os_timer_create(void);
264extern int os_timer_set_interval(unsigned long long nsecs);
265extern int os_timer_one_shot(unsigned long long nsecs);
266extern void os_timer_disable(void);
267extern long long os_persistent_clock_emulation(void);
268extern long long os_nsecs(void);
269
270/* skas/mem.c */
271extern long run_syscall_stub(struct mm_id * mm_idp,
272 int syscall, unsigned long *args, long expected,
273 void **addr, int done);
274extern long syscall_stub_data(struct mm_id * mm_idp,
275 unsigned long *data, int data_count,
276 void **addr, void **stub_addr);
277extern int map(struct mm_id * mm_idp, unsigned long virt,
278 unsigned long len, int prot, int phys_fd,
279 unsigned long long offset, int done, void **data);
280extern int unmap(struct mm_id * mm_idp, unsigned long addr, unsigned long len,
281 int done, void **data);
282extern int protect(struct mm_id * mm_idp, unsigned long addr,
283 unsigned long len, unsigned int prot, int done, void **data);
284
285/* skas/process.c */
286extern int is_skas_winch(int pid, int fd, void *data);
287extern int start_userspace(unsigned long stub_stack);
288extern int copy_context_skas0(unsigned long stack, int pid);
289extern void userspace(struct uml_pt_regs *regs, unsigned long *aux_fp_regs);
290extern void new_thread(void *stack, jmp_buf *buf, void (*handler)(void));
291extern void switch_threads(jmp_buf *me, jmp_buf *you);
292extern int start_idle_thread(void *stack, jmp_buf *switch_buf);
293extern void initial_thread_cb_skas(void (*proc)(void *),
294 void *arg);
295extern void halt_skas(void);
296extern void reboot_skas(void);
297
298/* irq.c */
299extern int os_waiting_for_events_epoll(void);
300extern void *os_epoll_get_data_pointer(int index);
301extern int os_epoll_triggered(int index, int events);
302extern int os_event_mask(enum um_irq_type irq_type);
303extern int os_setup_epoll(void);
304extern int os_add_epoll_fd(int events, int fd, void *data);
305extern int os_mod_epoll_fd(int events, int fd, void *data);
306extern int os_del_epoll_fd(int fd);
307extern void os_set_ioignore(void);
308extern void os_close_epoll_fd(void);
309extern void um_irqs_suspend(void);
310extern void um_irqs_resume(void);
311
312/* sigio.c */
313extern int add_sigio_fd(int fd);
314extern int ignore_sigio_fd(int fd);
315extern void maybe_sigio_broken(int fd);
316extern void sigio_broken(int fd);
317/*
318 * unlocked versions for IRQ controller code.
319 *
320 * This is safe because it's used at suspend/resume and nothing
321 * else is running.
322 */
323extern int __add_sigio_fd(int fd);
324extern int __ignore_sigio_fd(int fd);
325
326/* prctl.c */
327extern int os_arch_prctl(int pid, int option, unsigned long *arg2);
328
329/* tty.c */
330extern int get_pty(void);
331
332/* sys-$ARCH/task_size.c */
333extern unsigned long os_get_top_address(void);
334
335long syscall(long number, ...);
336
337/* irqflags tracing */
338extern void block_signals_trace(void);
339extern void unblock_signals_trace(void);
340extern void um_trace_signals_on(void);
341extern void um_trace_signals_off(void);
342
343/* time-travel */
344extern void deliver_time_travel_irqs(void);
345
346#endif
1/*
2 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
3 * Licensed under the GPL
4 */
5
6#ifndef __OS_H__
7#define __OS_H__
8
9#include <stdarg.h>
10#include <irq_user.h>
11#include <longjmp.h>
12#include <mm_id.h>
13
14#define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR))
15
16#define OS_TYPE_FILE 1
17#define OS_TYPE_DIR 2
18#define OS_TYPE_SYMLINK 3
19#define OS_TYPE_CHARDEV 4
20#define OS_TYPE_BLOCKDEV 5
21#define OS_TYPE_FIFO 6
22#define OS_TYPE_SOCK 7
23
24/* os_access() flags */
25#define OS_ACC_F_OK 0 /* Test for existence. */
26#define OS_ACC_X_OK 1 /* Test for execute permission. */
27#define OS_ACC_W_OK 2 /* Test for write permission. */
28#define OS_ACC_R_OK 4 /* Test for read permission. */
29#define OS_ACC_RW_OK (OS_ACC_W_OK | OS_ACC_R_OK) /* Test for RW permission */
30
31#ifdef CONFIG_64BIT
32#define OS_LIB_PATH "/usr/lib64/"
33#else
34#define OS_LIB_PATH "/usr/lib/"
35#endif
36
37/*
38 * types taken from stat_file() in hostfs_user.c
39 * (if they are wrong here, they are wrong there...).
40 */
41struct uml_stat {
42 int ust_dev; /* device */
43 unsigned long long ust_ino; /* inode */
44 int ust_mode; /* protection */
45 int ust_nlink; /* number of hard links */
46 int ust_uid; /* user ID of owner */
47 int ust_gid; /* group ID of owner */
48 unsigned long long ust_size; /* total size, in bytes */
49 int ust_blksize; /* blocksize for filesystem I/O */
50 unsigned long long ust_blocks; /* number of blocks allocated */
51 unsigned long ust_atime; /* time of last access */
52 unsigned long ust_mtime; /* time of last modification */
53 unsigned long ust_ctime; /* time of last change */
54};
55
56struct openflags {
57 unsigned int r : 1;
58 unsigned int w : 1;
59 unsigned int s : 1; /* O_SYNC */
60 unsigned int c : 1; /* O_CREAT */
61 unsigned int t : 1; /* O_TRUNC */
62 unsigned int a : 1; /* O_APPEND */
63 unsigned int e : 1; /* O_EXCL */
64 unsigned int cl : 1; /* FD_CLOEXEC */
65};
66
67#define OPENFLAGS() ((struct openflags) { .r = 0, .w = 0, .s = 0, .c = 0, \
68 .t = 0, .a = 0, .e = 0, .cl = 0 })
69
70static inline struct openflags of_read(struct openflags flags)
71{
72 flags.r = 1;
73 return flags;
74}
75
76static inline struct openflags of_write(struct openflags flags)
77{
78 flags.w = 1;
79 return flags;
80}
81
82static inline struct openflags of_rdwr(struct openflags flags)
83{
84 return of_read(of_write(flags));
85}
86
87static inline struct openflags of_set_rw(struct openflags flags, int r, int w)
88{
89 flags.r = r;
90 flags.w = w;
91 return flags;
92}
93
94static inline struct openflags of_sync(struct openflags flags)
95{
96 flags.s = 1;
97 return flags;
98}
99
100static inline struct openflags of_create(struct openflags flags)
101{
102 flags.c = 1;
103 return flags;
104}
105
106static inline struct openflags of_trunc(struct openflags flags)
107{
108 flags.t = 1;
109 return flags;
110}
111
112static inline struct openflags of_append(struct openflags flags)
113{
114 flags.a = 1;
115 return flags;
116}
117
118static inline struct openflags of_excl(struct openflags flags)
119{
120 flags.e = 1;
121 return flags;
122}
123
124static inline struct openflags of_cloexec(struct openflags flags)
125{
126 flags.cl = 1;
127 return flags;
128}
129
130/* file.c */
131extern int os_stat_file(const char *file_name, struct uml_stat *buf);
132extern int os_stat_fd(const int fd, struct uml_stat *buf);
133extern int os_access(const char *file, int mode);
134extern int os_set_exec_close(int fd);
135extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg);
136extern int os_get_ifname(int fd, char *namebuf);
137extern int os_set_slip(int fd);
138extern int os_mode_fd(int fd, int mode);
139extern int os_fsync_file(int fd);
140
141extern int os_seek_file(int fd, unsigned long long offset);
142extern int os_open_file(const char *file, struct openflags flags, int mode);
143extern int os_read_file(int fd, void *buf, int len);
144extern int os_write_file(int fd, const void *buf, int count);
145extern int os_sync_file(int fd);
146extern int os_file_size(const char *file, unsigned long long *size_out);
147extern int os_file_modtime(const char *file, unsigned long *modtime);
148extern int os_pipe(int *fd, int stream, int close_on_exec);
149extern int os_set_fd_async(int fd);
150extern int os_clear_fd_async(int fd);
151extern int os_set_fd_block(int fd, int blocking);
152extern int os_accept_connection(int fd);
153extern int os_create_unix_socket(const char *file, int len, int close_on_exec);
154extern int os_shutdown_socket(int fd, int r, int w);
155extern void os_close_file(int fd);
156extern int os_rcv_fd(int fd, int *helper_pid_out);
157extern int create_unix_socket(char *file, int len, int close_on_exec);
158extern int os_connect_socket(const char *name);
159extern int os_file_type(char *file);
160extern int os_file_mode(const char *file, struct openflags *mode_out);
161extern int os_lock_file(int fd, int excl);
162extern void os_flush_stdout(void);
163extern int os_stat_filesystem(char *path, long *bsize_out,
164 long long *blocks_out, long long *bfree_out,
165 long long *bavail_out, long long *files_out,
166 long long *ffree_out, void *fsid_out,
167 int fsid_size, long *namelen_out,
168 long *spare_out);
169extern int os_change_dir(char *dir);
170extern int os_fchange_dir(int fd);
171extern unsigned os_major(unsigned long long dev);
172extern unsigned os_minor(unsigned long long dev);
173extern unsigned long long os_makedev(unsigned major, unsigned minor);
174
175/* start_up.c */
176extern void os_early_checks(void);
177extern void can_do_skas(void);
178extern void os_check_bugs(void);
179extern void check_host_supports_tls(int *supports_tls, int *tls_min);
180
181/* mem.c */
182extern int create_mem_file(unsigned long long len);
183
184/* process.c */
185extern unsigned long os_process_pc(int pid);
186extern int os_process_parent(int pid);
187extern void os_stop_process(int pid);
188extern void os_kill_process(int pid, int reap_child);
189extern void os_kill_ptraced_process(int pid, int reap_child);
190extern long os_ptrace_ldt(long pid, long addr, long data);
191
192extern int os_getpid(void);
193extern int os_getpgrp(void);
194
195extern void init_new_thread_signals(void);
196
197extern int os_map_memory(void *virt, int fd, unsigned long long off,
198 unsigned long len, int r, int w, int x);
199extern int os_protect_memory(void *addr, unsigned long len,
200 int r, int w, int x);
201extern int os_unmap_memory(void *addr, int len);
202extern int os_drop_memory(void *addr, int length);
203extern int can_drop_memory(void);
204extern void os_flush_stdout(void);
205extern int os_mincore(void *addr, unsigned long len);
206
207/* execvp.c */
208extern int execvp_noalloc(char *buf, const char *file, char *const argv[]);
209/* helper.c */
210extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv);
211extern int run_helper_thread(int (*proc)(void *), void *arg,
212 unsigned int flags, unsigned long *stack_out);
213extern int helper_wait(int pid);
214
215
216/* umid.c */
217extern int umid_file_name(char *name, char *buf, int len);
218extern int set_umid(char *name);
219extern char *get_umid(void);
220
221/* signal.c */
222extern void timer_init(void);
223extern void set_sigstack(void *sig_stack, int size);
224extern void remove_sigstack(void);
225extern void set_handler(int sig);
226extern int change_sig(int signal, int on);
227extern void block_signals(void);
228extern void unblock_signals(void);
229extern int get_signals(void);
230extern int set_signals(int enable);
231extern int os_is_signal_stack(void);
232
233/* util.c */
234extern void stack_protections(unsigned long address);
235extern int raw(int fd);
236extern void setup_machinename(char *machine_out);
237extern void setup_hostinfo(char *buf, int len);
238extern void os_dump_core(void) __attribute__ ((noreturn));
239extern void um_early_printk(const char *s, unsigned int n);
240extern void os_fix_helper_signals(void);
241
242/* time.c */
243extern void idle_sleep(unsigned long long nsecs);
244extern int set_interval(void);
245extern int timer_one_shot(int ticks);
246extern long long disable_timer(void);
247extern void uml_idle_timer(void);
248extern long long os_nsecs(void);
249
250/* skas/mem.c */
251extern long run_syscall_stub(struct mm_id * mm_idp,
252 int syscall, unsigned long *args, long expected,
253 void **addr, int done);
254extern long syscall_stub_data(struct mm_id * mm_idp,
255 unsigned long *data, int data_count,
256 void **addr, void **stub_addr);
257extern int map(struct mm_id * mm_idp, unsigned long virt,
258 unsigned long len, int prot, int phys_fd,
259 unsigned long long offset, int done, void **data);
260extern int unmap(struct mm_id * mm_idp, unsigned long addr, unsigned long len,
261 int done, void **data);
262extern int protect(struct mm_id * mm_idp, unsigned long addr,
263 unsigned long len, unsigned int prot, int done, void **data);
264
265/* skas/process.c */
266extern int is_skas_winch(int pid, int fd, void *data);
267extern int start_userspace(unsigned long stub_stack);
268extern int copy_context_skas0(unsigned long stack, int pid);
269extern void userspace(struct uml_pt_regs *regs);
270extern int map_stub_pages(int fd, unsigned long code, unsigned long data,
271 unsigned long stack);
272extern void new_thread(void *stack, jmp_buf *buf, void (*handler)(void));
273extern void switch_threads(jmp_buf *me, jmp_buf *you);
274extern int start_idle_thread(void *stack, jmp_buf *switch_buf);
275extern void initial_thread_cb_skas(void (*proc)(void *),
276 void *arg);
277extern void halt_skas(void);
278extern void reboot_skas(void);
279
280/* irq.c */
281extern int os_waiting_for_events(struct irq_fd *active_fds);
282extern int os_create_pollfd(int fd, int events, void *tmp_pfd, int size_tmpfds);
283extern void os_free_irq_by_cb(int (*test)(struct irq_fd *, void *), void *arg,
284 struct irq_fd *active_fds, struct irq_fd ***last_irq_ptr2);
285extern void os_free_irq_later(struct irq_fd *active_fds,
286 int irq, void *dev_id);
287extern int os_get_pollfd(int i);
288extern void os_set_pollfd(int i, int fd);
289extern void os_set_ioignore(void);
290
291/* sigio.c */
292extern int add_sigio_fd(int fd);
293extern int ignore_sigio_fd(int fd);
294extern void maybe_sigio_broken(int fd, int read);
295extern void sigio_broken(int fd, int read);
296
297/* sys-x86_64/prctl.c */
298extern int os_arch_prctl(int pid, int code, unsigned long *addr);
299
300/* tty.c */
301extern int get_pty(void);
302
303/* sys-$ARCH/task_size.c */
304extern unsigned long os_get_top_address(void);
305
306#endif