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1da177e4 LT |
1 | /* |
2 | * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) | |
3 | * Licensed under the GPL | |
4 | */ | |
5 | ||
6 | #ifndef __OS_H__ | |
7 | #define __OS_H__ | |
8 | ||
9d624ea4 | 9 | #include "uml-config.h" |
1da177e4 LT |
10 | #include "asm/types.h" |
11 | #include "../os/include/file.h" | |
ea2ba7dc GS |
12 | #include "sysdep/ptrace.h" |
13 | #include "kern_util.h" | |
f45d9fc9 | 14 | #include "skas/mm_id.h" |
63ae2a94 | 15 | #include "irq_user.h" |
dd77aec0 | 16 | #include "sysdep/tls.h" |
1da177e4 LT |
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 | /* os_access() flags */ | |
27 | #define OS_ACC_F_OK 0 /* Test for existence. */ | |
28 | #define OS_ACC_X_OK 1 /* Test for execute permission. */ | |
29 | #define OS_ACC_W_OK 2 /* Test for write permission. */ | |
30 | #define OS_ACC_R_OK 4 /* Test for read permission. */ | |
31 | #define OS_ACC_RW_OK (OS_ACC_W_OK | OS_ACC_R_OK) /* Test for RW permission */ | |
32 | ||
33 | /* | |
34 | * types taken from stat_file() in hostfs_user.c | |
35 | * (if they are wrong here, they are wrong there...). | |
36 | */ | |
37 | struct uml_stat { | |
38 | int ust_dev; /* device */ | |
39 | unsigned long long ust_ino; /* inode */ | |
40 | int ust_mode; /* protection */ | |
41 | int ust_nlink; /* number of hard links */ | |
42 | int ust_uid; /* user ID of owner */ | |
43 | int ust_gid; /* group ID of owner */ | |
44 | unsigned long long ust_size; /* total size, in bytes */ | |
45 | int ust_blksize; /* blocksize for filesystem I/O */ | |
46 | unsigned long long ust_blocks; /* number of blocks allocated */ | |
47 | unsigned long ust_atime; /* time of last access */ | |
48 | unsigned long ust_mtime; /* time of last modification */ | |
49 | unsigned long ust_ctime; /* time of last change */ | |
50 | }; | |
51 | ||
52 | struct openflags { | |
53 | unsigned int r : 1; | |
54 | unsigned int w : 1; | |
55 | unsigned int s : 1; /* O_SYNC */ | |
56 | unsigned int c : 1; /* O_CREAT */ | |
57 | unsigned int t : 1; /* O_TRUNC */ | |
58 | unsigned int a : 1; /* O_APPEND */ | |
59 | unsigned int e : 1; /* O_EXCL */ | |
60 | unsigned int cl : 1; /* FD_CLOEXEC */ | |
61 | }; | |
62 | ||
63 | #define OPENFLAGS() ((struct openflags) { .r = 0, .w = 0, .s = 0, .c = 0, \ | |
64 | .t = 0, .a = 0, .e = 0, .cl = 0 }) | |
65 | ||
66 | static inline struct openflags of_read(struct openflags flags) | |
67 | { | |
68 | flags.r = 1; | |
69 | return(flags); | |
70 | } | |
71 | ||
72 | static inline struct openflags of_write(struct openflags flags) | |
73 | { | |
74 | flags.w = 1; | |
75 | return(flags); | |
76 | } | |
77 | ||
78 | static inline struct openflags of_rdwr(struct openflags flags) | |
79 | { | |
80 | return(of_read(of_write(flags))); | |
81 | } | |
82 | ||
83 | static inline struct openflags of_set_rw(struct openflags flags, int r, int w) | |
84 | { | |
85 | flags.r = r; | |
86 | flags.w = w; | |
87 | return(flags); | |
88 | } | |
89 | ||
90 | static inline struct openflags of_sync(struct openflags flags) | |
91 | { | |
92 | flags.s = 1; | |
93 | return(flags); | |
94 | } | |
95 | ||
96 | static inline struct openflags of_create(struct openflags flags) | |
97 | { | |
98 | flags.c = 1; | |
99 | return(flags); | |
100 | } | |
101 | ||
102 | static inline struct openflags of_trunc(struct openflags flags) | |
103 | { | |
104 | flags.t = 1; | |
105 | return(flags); | |
106 | } | |
107 | ||
108 | static inline struct openflags of_append(struct openflags flags) | |
109 | { | |
110 | flags.a = 1; | |
111 | return(flags); | |
112 | } | |
113 | ||
114 | static inline struct openflags of_excl(struct openflags flags) | |
115 | { | |
116 | flags.e = 1; | |
117 | return(flags); | |
118 | } | |
119 | ||
120 | static inline struct openflags of_cloexec(struct openflags flags) | |
121 | { | |
122 | flags.cl = 1; | |
123 | return(flags); | |
124 | } | |
125 | ||
cf9165a5 | 126 | /* file.c */ |
1da177e4 LT |
127 | extern int os_stat_file(const char *file_name, struct uml_stat *buf); |
128 | extern int os_stat_fd(const int fd, struct uml_stat *buf); | |
129 | extern int os_access(const char *file, int mode); | |
130 | extern void os_print_error(int error, const char* str); | |
131 | extern int os_get_exec_close(int fd, int *close_on_exec); | |
132 | extern int os_set_exec_close(int fd, int close_on_exec); | |
133 | extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg); | |
134 | extern int os_window_size(int fd, int *rows, int *cols); | |
135 | extern int os_new_tty_pgrp(int fd, int pid); | |
136 | extern int os_get_ifname(int fd, char *namebuf); | |
137 | extern int os_set_slip(int fd); | |
138 | extern int os_set_owner(int fd, int pid); | |
139 | extern int os_sigio_async(int master, int slave); | |
140 | extern int os_mode_fd(int fd, int mode); | |
141 | ||
142 | extern int os_seek_file(int fd, __u64 offset); | |
143 | extern int os_open_file(char *file, struct openflags flags, int mode); | |
144 | extern int os_read_file(int fd, void *buf, int len); | |
145 | extern int os_write_file(int fd, const void *buf, int count); | |
da00d9a5 | 146 | extern int os_file_size(char *file, unsigned long long *size_out); |
1da177e4 LT |
147 | extern int os_file_modtime(char *file, unsigned long *modtime); |
148 | extern int os_pipe(int *fd, int stream, int close_on_exec); | |
149 | extern int os_set_fd_async(int fd, int owner); | |
150 | extern int os_clear_fd_async(int fd); | |
151 | extern int os_set_fd_block(int fd, int blocking); | |
152 | extern int os_accept_connection(int fd); | |
153 | extern int os_create_unix_socket(char *file, int len, int close_on_exec); | |
154 | extern int os_shutdown_socket(int fd, int r, int w); | |
155 | extern void os_close_file(int fd); | |
156 | extern int os_rcv_fd(int fd, int *helper_pid_out); | |
157 | extern int create_unix_socket(char *file, int len, int close_on_exec); | |
158 | extern int os_connect_socket(char *name); | |
159 | extern int os_file_type(char *file); | |
160 | extern int os_file_mode(char *file, struct openflags *mode_out); | |
161 | extern int os_lock_file(int fd, int excl); | |
cf9165a5 JD |
162 | extern void os_flush_stdout(void); |
163 | extern 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); | |
169 | extern int os_change_dir(char *dir); | |
170 | extern int os_fchange_dir(int fd); | |
1da177e4 | 171 | |
60d339f6 GS |
172 | /* start_up.c */ |
173 | extern void os_early_checks(void); | |
174 | extern int can_do_skas(void); | |
8e367065 | 175 | extern void os_check_bugs(void); |
3feb8856 | 176 | extern void check_host_supports_tls(int *supports_tls, int *tls_min); |
60d339f6 | 177 | |
8923648c PBG |
178 | /* Make sure they are clear when running in TT mode. Required by |
179 | * SEGV_MAYBE_FIXABLE */ | |
9d624ea4 | 180 | #ifdef UML_CONFIG_MODE_SKAS |
8923648c | 181 | #define clear_can_do_skas() do { ptrace_faultinfo = proc_mm = 0; } while (0) |
9d624ea4 PBG |
182 | #else |
183 | #define clear_can_do_skas() do {} while (0) | |
184 | #endif | |
8923648c | 185 | |
0f80bc85 | 186 | /* mem.c */ |
ae173816 | 187 | extern int create_mem_file(unsigned long long len); |
0f80bc85 | 188 | |
60d339f6 | 189 | /* process.c */ |
1da177e4 LT |
190 | extern unsigned long os_process_pc(int pid); |
191 | extern int os_process_parent(int pid); | |
192 | extern void os_stop_process(int pid); | |
193 | extern void os_kill_process(int pid, int reap_child); | |
194 | extern void os_kill_ptraced_process(int pid, int reap_child); | |
195 | extern void os_usr1_process(int pid); | |
07f4e2c6 PBG |
196 | extern long os_ptrace_ldt(long pid, long addr, long data); |
197 | ||
1da177e4 | 198 | extern int os_getpid(void); |
cd2ee4a3 | 199 | extern int os_getpgrp(void); |
07f4e2c6 | 200 | |
60d339f6 | 201 | extern void init_new_thread_stack(void *sig_stack, void (*usr1_handler)(int)); |
e64bd134 | 202 | extern void init_new_thread_signals(void); |
60d339f6 | 203 | extern int run_kernel_thread(int (*fn)(void *), void *arg, void **jmp_ptr); |
1da177e4 LT |
204 | |
205 | extern int os_map_memory(void *virt, int fd, unsigned long long off, | |
206 | unsigned long len, int r, int w, int x); | |
207 | extern int os_protect_memory(void *addr, unsigned long len, | |
208 | int r, int w, int x); | |
209 | extern int os_unmap_memory(void *addr, int len); | |
02dea087 JD |
210 | extern int os_drop_memory(void *addr, int length); |
211 | extern int can_drop_memory(void); | |
1da177e4 | 212 | extern void os_flush_stdout(void); |
1da177e4 | 213 | |
60d339f6 GS |
214 | /* tt.c |
215 | * for tt mode only (will be deleted in future...) | |
216 | */ | |
63ae2a94 JD |
217 | extern void forward_ipi(int fd, int pid); |
218 | extern void kill_child_dead(int pid); | |
4fef0c10 GS |
219 | extern void stop(void); |
220 | extern int wait_for_stop(int pid, int sig, int cont_type, void *relay); | |
0f80bc85 JD |
221 | extern int protect_memory(unsigned long addr, unsigned long len, |
222 | int r, int w, int x, int must_succeed); | |
60d339f6 GS |
223 | extern void forward_pending_sigio(int target); |
224 | extern int start_fork_tramp(void *arg, unsigned long temp_stack, | |
225 | int clone_flags, int (*tramp)(void *)); | |
226 | ||
bb578426 GS |
227 | /* uaccess.c */ |
228 | extern unsigned long __do_user_copy(void *to, const void *from, int n, | |
229 | void **fault_addr, void **fault_catcher, | |
230 | void (*op)(void *to, const void *from, | |
231 | int n), int *faulted_out); | |
232 | ||
ff5c6ff5 JD |
233 | /* helper.c */ |
234 | extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv, | |
235 | unsigned long *stack_out); | |
236 | extern int run_helper_thread(int (*proc)(void *), void *arg, | |
237 | unsigned int flags, unsigned long *stack_out, | |
238 | int stack_order); | |
239 | extern int helper_wait(int pid); | |
240 | ||
aa6758d4 PBG |
241 | |
242 | /* tls.c */ | |
dd77aec0 PBG |
243 | extern int os_set_thread_area(user_desc_t *info, int pid); |
244 | extern int os_get_thread_area(user_desc_t *info, int pid); | |
1da177e4 | 245 | |
dd77aec0 | 246 | /* umid.c */ |
2264c475 | 247 | extern int umid_file_name(char *name, char *buf, int len); |
7eebe8a9 JD |
248 | extern int set_umid(char *name); |
249 | extern char *get_umid(void); | |
2264c475 | 250 | |
0805d89c GS |
251 | /* signal.c */ |
252 | extern void set_sigstack(void *sig_stack, int size); | |
253 | extern void remove_sigstack(void); | |
254 | extern void set_handler(int sig, void (*handler)(int), int flags, ...); | |
255 | extern int change_sig(int signal, int on); | |
256 | extern void block_signals(void); | |
257 | extern void unblock_signals(void); | |
258 | extern int get_signals(void); | |
259 | extern int set_signals(int enable); | |
abaf6977 | 260 | extern void os_usr1_signal(int on); |
0805d89c | 261 | |
ea2ba7dc GS |
262 | /* trap.c */ |
263 | extern void os_fill_handlinfo(struct kern_handlers h); | |
264 | extern void do_longjmp(void *p, int val); | |
265 | ||
4fef0c10 GS |
266 | /* util.c */ |
267 | extern void stack_protections(unsigned long address); | |
268 | extern void task_protections(unsigned long address); | |
269 | extern int raw(int fd); | |
270 | extern void setup_machinename(char *machine_out); | |
271 | extern void setup_hostinfo(void); | |
272 | extern int setjmp_wrapper(void (*proc)(void *, void *), ...); | |
273 | ||
cff65c4f GS |
274 | /* time.c */ |
275 | #define BILLION (1000 * 1000 * 1000) | |
276 | ||
277 | extern void switch_timers(int to_real); | |
278 | extern void idle_sleep(int secs); | |
279 | extern void enable_timer(void); | |
280 | extern void disable_timer(void); | |
281 | extern void user_time_init(void); | |
282 | extern void uml_idle_timer(void); | |
283 | extern unsigned long long os_nsecs(void); | |
284 | ||
f45d9fc9 GS |
285 | /* skas/mem.c */ |
286 | extern long run_syscall_stub(struct mm_id * mm_idp, | |
287 | int syscall, unsigned long *args, long expected, | |
288 | void **addr, int done); | |
289 | extern long syscall_stub_data(struct mm_id * mm_idp, | |
290 | unsigned long *data, int data_count, | |
291 | void **addr, void **stub_addr); | |
292 | extern int map(struct mm_id * mm_idp, unsigned long virt, | |
293 | unsigned long len, int r, int w, int x, int phys_fd, | |
294 | unsigned long long offset, int done, void **data); | |
295 | extern int unmap(struct mm_id * mm_idp, void *addr, unsigned long len, | |
296 | int done, void **data); | |
297 | extern int protect(struct mm_id * mm_idp, unsigned long addr, | |
298 | unsigned long len, int r, int w, int x, int done, | |
299 | void **data); | |
300 | ||
abaf6977 GS |
301 | /* skas/process.c */ |
302 | extern int is_skas_winch(int pid, int fd, void *data); | |
303 | extern int start_userspace(unsigned long stub_stack); | |
304 | extern int copy_context_skas0(unsigned long stack, int pid); | |
305 | extern void userspace(union uml_pt_regs *regs); | |
306 | extern void map_stub_pages(int fd, unsigned long code, | |
307 | unsigned long data, unsigned long stack); | |
308 | extern void new_thread(void *stack, void **switch_buf_ptr, | |
309 | void **fork_buf_ptr, void (*handler)(int)); | |
310 | extern void thread_wait(void *sw, void *fb); | |
311 | extern void switch_threads(void *me, void *next); | |
312 | extern int start_idle_thread(void *stack, void *switch_buf_ptr, | |
313 | void **fork_buf_ptr); | |
314 | extern void initial_thread_cb_skas(void (*proc)(void *), | |
315 | void *arg); | |
316 | extern void halt_skas(void); | |
317 | extern void reboot_skas(void); | |
318 | ||
63ae2a94 JD |
319 | /* irq.c */ |
320 | extern int os_waiting_for_events(struct irq_fd *active_fds); | |
321 | extern int os_isatty(int fd); | |
322 | extern int os_create_pollfd(int fd, int events, void *tmp_pfd, int size_tmpfds); | |
323 | extern void os_free_irq_by_cb(int (*test)(struct irq_fd *, void *), void *arg, | |
324 | struct irq_fd *active_fds, struct irq_fd ***last_irq_ptr2); | |
325 | extern void os_free_irq_later(struct irq_fd *active_fds, | |
326 | int irq, void *dev_id); | |
327 | extern int os_get_pollfd(int i); | |
328 | extern void os_set_pollfd(int i, int fd); | |
329 | extern void os_set_ioignore(void); | |
330 | extern void init_irq_signals(int on_sigstack); | |
331 | ||
f206aabb JD |
332 | /* sigio.c */ |
333 | extern void write_sigio_workaround(void); | |
334 | extern int add_sigio_fd(int fd, int read); | |
335 | extern int ignore_sigio_fd(int fd); | |
336 | ||
cf9165a5 JD |
337 | /* skas/trap */ |
338 | extern void sig_handler_common_skas(int sig, void *sc_ptr); | |
339 | extern void user_signal(int sig, union uml_pt_regs *regs, int pid); | |
340 | ||
2264c475 | 341 | #endif |