This source file includes following definitions.
- of_read
- of_write
- of_rdwr
- of_set_rw
- of_sync
- of_create
- of_trunc
- of_append
- of_excl
- of_cloexec
1
2
3
4
5
6
7
8 #ifndef __OS_H__
9 #define __OS_H__
10
11 #include <stdarg.h>
12 #include <irq_user.h>
13 #include <longjmp.h>
14 #include <mm_id.h>
15
16 #define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR))
17
18 #define OS_TYPE_FILE 1
19 #define OS_TYPE_DIR 2
20 #define OS_TYPE_SYMLINK 3
21 #define OS_TYPE_CHARDEV 4
22 #define OS_TYPE_BLOCKDEV 5
23 #define OS_TYPE_FIFO 6
24 #define OS_TYPE_SOCK 7
25
26
27 #define OS_ACC_F_OK 0
28 #define OS_ACC_X_OK 1
29 #define OS_ACC_W_OK 2
30 #define OS_ACC_R_OK 4
31 #define OS_ACC_RW_OK (OS_ACC_W_OK | OS_ACC_R_OK)
32
33 #ifdef CONFIG_64BIT
34 #define OS_LIB_PATH "/usr/lib64/"
35 #else
36 #define OS_LIB_PATH "/usr/lib/"
37 #endif
38
39 #define OS_SENDMSG_MAX_FDS 8
40
41
42
43
44
45 struct uml_stat {
46 int ust_dev;
47 unsigned long long ust_ino;
48 int ust_mode;
49 int ust_nlink;
50 int ust_uid;
51 int ust_gid;
52 unsigned long long ust_size;
53 int ust_blksize;
54 unsigned long long ust_blocks;
55 unsigned long ust_atime;
56 unsigned long ust_mtime;
57 unsigned long ust_ctime;
58 };
59
60 struct openflags {
61 unsigned int r : 1;
62 unsigned int w : 1;
63 unsigned int s : 1;
64 unsigned int c : 1;
65 unsigned int t : 1;
66 unsigned int a : 1;
67 unsigned int e : 1;
68 unsigned int cl : 1;
69 };
70
71 #define OPENFLAGS() ((struct openflags) { .r = 0, .w = 0, .s = 0, .c = 0, \
72 .t = 0, .a = 0, .e = 0, .cl = 0 })
73
74 static inline struct openflags of_read(struct openflags flags)
75 {
76 flags.r = 1;
77 return flags;
78 }
79
80 static inline struct openflags of_write(struct openflags flags)
81 {
82 flags.w = 1;
83 return flags;
84 }
85
86 static inline struct openflags of_rdwr(struct openflags flags)
87 {
88 return of_read(of_write(flags));
89 }
90
91 static inline struct openflags of_set_rw(struct openflags flags, int r, int w)
92 {
93 flags.r = r;
94 flags.w = w;
95 return flags;
96 }
97
98 static inline struct openflags of_sync(struct openflags flags)
99 {
100 flags.s = 1;
101 return flags;
102 }
103
104 static inline struct openflags of_create(struct openflags flags)
105 {
106 flags.c = 1;
107 return flags;
108 }
109
110 static inline struct openflags of_trunc(struct openflags flags)
111 {
112 flags.t = 1;
113 return flags;
114 }
115
116 static inline struct openflags of_append(struct openflags flags)
117 {
118 flags.a = 1;
119 return flags;
120 }
121
122 static inline struct openflags of_excl(struct openflags flags)
123 {
124 flags.e = 1;
125 return flags;
126 }
127
128 static inline struct openflags of_cloexec(struct openflags flags)
129 {
130 flags.cl = 1;
131 return flags;
132 }
133
134
135 extern int os_stat_file(const char *file_name, struct uml_stat *buf);
136 extern int os_stat_fd(const int fd, struct uml_stat *buf);
137 extern int os_access(const char *file, int mode);
138 extern int os_set_exec_close(int fd);
139 extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg);
140 extern int os_get_ifname(int fd, char *namebuf);
141 extern int os_set_slip(int fd);
142 extern int os_mode_fd(int fd, int mode);
143 extern int os_fsync_file(int fd);
144
145 extern int os_seek_file(int fd, unsigned long long offset);
146 extern int os_open_file(const char *file, struct openflags flags, int mode);
147 extern int os_read_file(int fd, void *buf, int len);
148 extern int os_write_file(int fd, const void *buf, int count);
149 extern int os_sync_file(int fd);
150 extern int os_file_size(const char *file, unsigned long long *size_out);
151 extern int os_pread_file(int fd, void *buf, int len, unsigned long long offset);
152 extern int os_pwrite_file(int fd, const void *buf, int count, unsigned long long offset);
153 extern int os_file_modtime(const char *file, unsigned long *modtime);
154 extern int os_pipe(int *fd, int stream, int close_on_exec);
155 extern int os_set_fd_async(int fd);
156 extern int os_clear_fd_async(int fd);
157 extern int os_set_fd_block(int fd, int blocking);
158 extern int os_accept_connection(int fd);
159 extern int os_create_unix_socket(const char *file, int len, int close_on_exec);
160 extern int os_shutdown_socket(int fd, int r, int w);
161 extern void os_close_file(int fd);
162 extern int os_rcv_fd(int fd, int *helper_pid_out);
163 extern int create_unix_socket(char *file, int len, int close_on_exec);
164 extern int os_connect_socket(const char *name);
165 extern int os_file_type(char *file);
166 extern int os_file_mode(const char *file, struct openflags *mode_out);
167 extern int os_lock_file(int fd, int excl);
168 extern void os_flush_stdout(void);
169 extern int os_stat_filesystem(char *path, long *bsize_out,
170 long long *blocks_out, long long *bfree_out,
171 long long *bavail_out, long long *files_out,
172 long long *ffree_out, void *fsid_out,
173 int fsid_size, long *namelen_out,
174 long *spare_out);
175 extern int os_change_dir(char *dir);
176 extern int os_fchange_dir(int fd);
177 extern unsigned os_major(unsigned long long dev);
178 extern unsigned os_minor(unsigned long long dev);
179 extern unsigned long long os_makedev(unsigned major, unsigned minor);
180 extern int os_falloc_punch(int fd, unsigned long long offset, int count);
181 extern int os_eventfd(unsigned int initval, int flags);
182 extern int os_sendmsg_fds(int fd, const void *buf, unsigned int len,
183 const int *fds, unsigned int fds_num);
184
185
186 extern void os_early_checks(void);
187 extern void os_check_bugs(void);
188 extern void check_host_supports_tls(int *supports_tls, int *tls_min);
189
190
191 extern int create_mem_file(unsigned long long len);
192
193
194 extern unsigned long os_process_pc(int pid);
195 extern int os_process_parent(int pid);
196 extern void os_alarm_process(int pid);
197 extern void os_stop_process(int pid);
198 extern void os_kill_process(int pid, int reap_child);
199 extern void os_kill_ptraced_process(int pid, int reap_child);
200
201 extern int os_getpid(void);
202 extern int os_getpgrp(void);
203
204 extern void init_new_thread_signals(void);
205
206 extern int os_map_memory(void *virt, int fd, unsigned long long off,
207 unsigned long len, int r, int w, int x);
208 extern int os_protect_memory(void *addr, unsigned long len,
209 int r, int w, int x);
210 extern int os_unmap_memory(void *addr, int len);
211 extern int os_drop_memory(void *addr, int length);
212 extern int can_drop_memory(void);
213 extern void os_flush_stdout(void);
214 extern int os_mincore(void *addr, unsigned long len);
215
216
217 extern int execvp_noalloc(char *buf, const char *file, char *const argv[]);
218
219 extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv);
220 extern int run_helper_thread(int (*proc)(void *), void *arg,
221 unsigned int flags, unsigned long *stack_out);
222 extern int helper_wait(int pid);
223
224
225
226 extern int umid_file_name(char *name, char *buf, int len);
227 extern int set_umid(char *name);
228 extern char *get_umid(void);
229
230
231 extern void timer_set_signal_handler(void);
232 extern void set_sigstack(void *sig_stack, int size);
233 extern void remove_sigstack(void);
234 extern void set_handler(int sig);
235 extern int change_sig(int signal, int on);
236 extern void block_signals(void);
237 extern void unblock_signals(void);
238 extern int get_signals(void);
239 extern int set_signals(int enable);
240 extern int set_signals_trace(int enable);
241 extern int os_is_signal_stack(void);
242 extern void deliver_alarm(void);
243
244
245 extern void stack_protections(unsigned long address);
246 extern int raw(int fd);
247 extern void setup_machinename(char *machine_out);
248 extern void setup_hostinfo(char *buf, int len);
249 extern void os_dump_core(void) __attribute__ ((noreturn));
250 extern void um_early_printk(const char *s, unsigned int n);
251 extern void os_fix_helper_signals(void);
252 extern void os_info(const char *fmt, ...)
253 __attribute__ ((format (printf, 1, 2)));
254 extern void os_warn(const char *fmt, ...)
255 __attribute__ ((format (printf, 1, 2)));
256
257
258 extern void os_idle_sleep(unsigned long long nsecs);
259 extern int os_timer_create(void);
260 extern int os_timer_set_interval(unsigned long long nsecs);
261 extern int os_timer_one_shot(unsigned long long nsecs);
262 extern void os_timer_disable(void);
263 extern void uml_idle_timer(void);
264 extern long long os_persistent_clock_emulation(void);
265 extern long long os_nsecs(void);
266
267
268 extern long run_syscall_stub(struct mm_id * mm_idp,
269 int syscall, unsigned long *args, long expected,
270 void **addr, int done);
271 extern long syscall_stub_data(struct mm_id * mm_idp,
272 unsigned long *data, int data_count,
273 void **addr, void **stub_addr);
274 extern int map(struct mm_id * mm_idp, unsigned long virt,
275 unsigned long len, int prot, int phys_fd,
276 unsigned long long offset, int done, void **data);
277 extern int unmap(struct mm_id * mm_idp, unsigned long addr, unsigned long len,
278 int done, void **data);
279 extern int protect(struct mm_id * mm_idp, unsigned long addr,
280 unsigned long len, unsigned int prot, int done, void **data);
281
282
283 extern int is_skas_winch(int pid, int fd, void *data);
284 extern int start_userspace(unsigned long stub_stack);
285 extern int copy_context_skas0(unsigned long stack, int pid);
286 extern void userspace(struct uml_pt_regs *regs, unsigned long *aux_fp_regs);
287 extern int map_stub_pages(int fd, unsigned long code, unsigned long data,
288 unsigned long stack);
289 extern void new_thread(void *stack, jmp_buf *buf, void (*handler)(void));
290 extern void switch_threads(jmp_buf *me, jmp_buf *you);
291 extern int start_idle_thread(void *stack, jmp_buf *switch_buf);
292 extern void initial_thread_cb_skas(void (*proc)(void *),
293 void *arg);
294 extern void halt_skas(void);
295 extern void reboot_skas(void);
296
297
298 extern int os_waiting_for_events_epoll(void);
299 extern void *os_epoll_get_data_pointer(int index);
300 extern int os_epoll_triggered(int index, int events);
301 extern int os_event_mask(int irq_type);
302 extern int os_setup_epoll(void);
303 extern int os_add_epoll_fd(int events, int fd, void *data);
304 extern int os_mod_epoll_fd(int events, int fd, void *data);
305 extern int os_del_epoll_fd(int fd);
306 extern void os_set_ioignore(void);
307 extern void os_close_epoll_fd(void);
308
309
310 extern int add_sigio_fd(int fd);
311 extern int ignore_sigio_fd(int fd);
312 extern void maybe_sigio_broken(int fd, int read);
313 extern void sigio_broken(int fd, int read);
314
315
316 extern int os_arch_prctl(int pid, int option, unsigned long *arg2);
317
318
319 extern int get_pty(void);
320
321
322 extern unsigned long os_get_top_address(void);
323
324 long syscall(long number, ...);
325
326
327 extern void block_signals_trace(void);
328 extern void unblock_signals_trace(void);
329 extern void um_trace_signals_on(void);
330 extern void um_trace_signals_off(void);
331
332 #endif