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[PATCH] uml: move sigio_user.c to os-Linux/sigio.c
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / um / include / os.h
CommitLineData
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"
1da177e4
LT		 16
17#define OS_TYPE_FILE 1
18#define OS_TYPE_DIR 2
19#define OS_TYPE_SYMLINK 3
20#define OS_TYPE_CHARDEV 4
21#define OS_TYPE_BLOCKDEV 5
22#define OS_TYPE_FIFO 6
23#define OS_TYPE_SOCK 7
24
25/* os_access() flags */
26#define OS_ACC_F_OK 0 /* Test for existence. */
27#define OS_ACC_X_OK 1 /* Test for execute permission. */
28#define OS_ACC_W_OK 2 /* Test for write permission. */
29#define OS_ACC_R_OK 4 /* Test for read permission. */
30#define OS_ACC_RW_OK (OS_ACC_W_OK | OS_ACC_R_OK) /* Test for RW permission */
31
32/*
33 * types taken from stat_file() in hostfs_user.c
34 * (if they are wrong here, they are wrong there...).
35 */
36struct uml_stat {
37 int ust_dev; /* device */
38 unsigned long long ust_ino; /* inode */
39 int ust_mode; /* protection */
40 int ust_nlink; /* number of hard links */
41 int ust_uid; /* user ID of owner */
42 int ust_gid; /* group ID of owner */
43 unsigned long long ust_size; /* total size, in bytes */
44 int ust_blksize; /* blocksize for filesystem I/O */
45 unsigned long long ust_blocks; /* number of blocks allocated */
46 unsigned long ust_atime; /* time of last access */
47 unsigned long ust_mtime; /* time of last modification */
48 unsigned long ust_ctime; /* time of last change */
49};
50
51struct openflags {
52 unsigned int r : 1;
53 unsigned int w : 1;
54 unsigned int s : 1; /* O_SYNC */
55 unsigned int c : 1; /* O_CREAT */
56 unsigned int t : 1; /* O_TRUNC */
57 unsigned int a : 1; /* O_APPEND */
58 unsigned int e : 1; /* O_EXCL */
59 unsigned int cl : 1; /* FD_CLOEXEC */
60};
61
62#define OPENFLAGS() ((struct openflags) { .r = 0, .w = 0, .s = 0, .c = 0, \
63 .t = 0, .a = 0, .e = 0, .cl = 0 })
64
65static inline struct openflags of_read(struct openflags flags)
66{
67 flags.r = 1;
68 return(flags);
69}
70
71static inline struct openflags of_write(struct openflags flags)
72{
73 flags.w = 1;
74 return(flags);
75}
76
77static inline struct openflags of_rdwr(struct openflags flags)
78{
79 return(of_read(of_write(flags)));
80}
81
82static inline struct openflags of_set_rw(struct openflags flags, int r, int w)
83{
84 flags.r = r;
85 flags.w = w;
86 return(flags);
87}
88
89static inline struct openflags of_sync(struct openflags flags)
90{
91 flags.s = 1;
92 return(flags);
93}
94
95static inline struct openflags of_create(struct openflags flags)
96{
97 flags.c = 1;
98 return(flags);
99}
100
101static inline struct openflags of_trunc(struct openflags flags)
102{
103 flags.t = 1;
104 return(flags);
105}
106
107static inline struct openflags of_append(struct openflags flags)
108{
109 flags.a = 1;
110 return(flags);
111}
112
113static inline struct openflags of_excl(struct openflags flags)
114{
115 flags.e = 1;
116 return(flags);
117}
118
119static inline struct openflags of_cloexec(struct openflags flags)
120{
121 flags.cl = 1;
122 return(flags);
123}
124
125extern int os_stat_file(const char *file_name, struct uml_stat *buf);
126extern int os_stat_fd(const int fd, struct uml_stat *buf);
127extern int os_access(const char *file, int mode);
128extern void os_print_error(int error, const char* str);
129extern int os_get_exec_close(int fd, int *close_on_exec);
130extern int os_set_exec_close(int fd, int close_on_exec);
131extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg);
132extern int os_window_size(int fd, int *rows, int *cols);
133extern int os_new_tty_pgrp(int fd, int pid);
134extern int os_get_ifname(int fd, char *namebuf);
135extern int os_set_slip(int fd);
136extern int os_set_owner(int fd, int pid);
137extern int os_sigio_async(int master, int slave);
138extern int os_mode_fd(int fd, int mode);
139
140extern int os_seek_file(int fd, __u64 offset);
141extern int os_open_file(char *file, struct openflags flags, int mode);
142extern int os_read_file(int fd, void *buf, int len);
143extern int os_write_file(int fd, const void *buf, int count);
da00d9a5 144extern int os_file_size(char *file, unsigned long long *size_out);
1da177e4
LT		 145extern int os_file_modtime(char *file, unsigned long *modtime);
146extern int os_pipe(int *fd, int stream, int close_on_exec);
147extern int os_set_fd_async(int fd, int owner);
148extern int os_clear_fd_async(int fd);
149extern int os_set_fd_block(int fd, int blocking);
150extern int os_accept_connection(int fd);
151extern int os_create_unix_socket(char *file, int len, int close_on_exec);
152extern int os_shutdown_socket(int fd, int r, int w);
153extern void os_close_file(int fd);
154extern int os_rcv_fd(int fd, int *helper_pid_out);
155extern int create_unix_socket(char *file, int len, int close_on_exec);
156extern int os_connect_socket(char *name);
157extern int os_file_type(char *file);
158extern int os_file_mode(char *file, struct openflags *mode_out);
159extern int os_lock_file(int fd, int excl);
160
60d339f6
GS		 161/* start_up.c */
162extern void os_early_checks(void);
163extern int can_do_skas(void);
8e367065 164extern void os_check_bugs(void);
60d339f6 165
8923648c
PBG		 166/* Make sure they are clear when running in TT mode. Required by
167 * SEGV_MAYBE_FIXABLE */
9d624ea4 168#ifdef UML_CONFIG_MODE_SKAS
8923648c 169#define clear_can_do_skas() do { ptrace_faultinfo = proc_mm = 0; } while (0)
9d624ea4
PBG		 170#else
171#define clear_can_do_skas() do {} while (0)
172#endif
8923648c 173
0f80bc85 174/* mem.c */
ae173816 175extern int create_mem_file(unsigned long long len);
0f80bc85 176
60d339f6 177/* process.c */
1da177e4
LT		 178extern unsigned long os_process_pc(int pid);
179extern int os_process_parent(int pid);
180extern void os_stop_process(int pid);
181extern void os_kill_process(int pid, int reap_child);
182extern void os_kill_ptraced_process(int pid, int reap_child);
183extern void os_usr1_process(int pid);
07f4e2c6
PBG		 184extern long os_ptrace_ldt(long pid, long addr, long data);
185
1da177e4 186extern int os_getpid(void);
cd2ee4a3 187extern int os_getpgrp(void);
07f4e2c6 188
60d339f6
GS		 189extern void init_new_thread_stack(void *sig_stack, void (*usr1_handler)(int));
190extern void init_new_thread_signals(int altstack);
191extern int run_kernel_thread(int (*fn)(void *), void *arg, void **jmp_ptr);
1da177e4
LT		 192
193extern int os_map_memory(void *virt, int fd, unsigned long long off,
194 unsigned long len, int r, int w, int x);
195extern int os_protect_memory(void *addr, unsigned long len,
196 int r, int w, int x);
197extern int os_unmap_memory(void *addr, int len);
198extern void os_flush_stdout(void);
1da177e4 199
60d339f6
GS		 200/* tt.c
201 * for tt mode only (will be deleted in future...)
202 */
63ae2a94
JD		 203extern void forward_ipi(int fd, int pid);
204extern void kill_child_dead(int pid);
4fef0c10
GS		 205extern void stop(void);
206extern int wait_for_stop(int pid, int sig, int cont_type, void *relay);
0f80bc85
JD		 207extern int protect_memory(unsigned long addr, unsigned long len,
208 int r, int w, int x, int must_succeed);
60d339f6
GS		 209extern void forward_pending_sigio(int target);
210extern int start_fork_tramp(void *arg, unsigned long temp_stack,
211 int clone_flags, int (*tramp)(void *));
212
bb578426
GS		 213/* uaccess.c */
214extern unsigned long __do_user_copy(void *to, const void *from, int n,
215 void **fault_addr, void **fault_catcher,
216 void (*op)(void *to, const void *from,
217 int n), int *faulted_out);
218
ff5c6ff5
JD		 219/* helper.c */
220extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
221 unsigned long *stack_out);
222extern int run_helper_thread(int (*proc)(void *), void *arg,
223 unsigned int flags, unsigned long *stack_out,
224 int stack_order);
225extern int helper_wait(int pid);
226
2264c475 227/* umid.c */
1da177e4 228
2264c475 229extern int umid_file_name(char *name, char *buf, int len);
7eebe8a9
JD		 230extern int set_umid(char *name);
231extern char *get_umid(void);
2264c475 232
0805d89c
GS		 233/* signal.c */
234extern void set_sigstack(void *sig_stack, int size);
235extern void remove_sigstack(void);
236extern void set_handler(int sig, void (*handler)(int), int flags, ...);
237extern int change_sig(int signal, int on);
238extern void block_signals(void);
239extern void unblock_signals(void);
240extern int get_signals(void);
241extern int set_signals(int enable);
abaf6977 242extern void os_usr1_signal(int on);
0805d89c 243
ea2ba7dc
GS		 244/* trap.c */
245extern void os_fill_handlinfo(struct kern_handlers h);
246extern void do_longjmp(void *p, int val);
247
4fef0c10
GS		 248/* util.c */
249extern void stack_protections(unsigned long address);
250extern void task_protections(unsigned long address);
251extern int raw(int fd);
252extern void setup_machinename(char *machine_out);
253extern void setup_hostinfo(void);
254extern int setjmp_wrapper(void (*proc)(void *, void *), ...);
255
cff65c4f
GS		 256/* time.c */
257#define BILLION (1000 * 1000 * 1000)
258
259extern void switch_timers(int to_real);
260extern void idle_sleep(int secs);
261extern void enable_timer(void);
262extern void disable_timer(void);
263extern void user_time_init(void);
264extern void uml_idle_timer(void);
265extern unsigned long long os_nsecs(void);
266
f45d9fc9
GS		 267/* skas/mem.c */
268extern long run_syscall_stub(struct mm_id * mm_idp,
269 int syscall, unsigned long *args, long expected,
270 void **addr, int done);
271extern long syscall_stub_data(struct mm_id * mm_idp,
272 unsigned long *data, int data_count,
273 void **addr, void **stub_addr);
274extern int map(struct mm_id * mm_idp, unsigned long virt,
275 unsigned long len, int r, int w, int x, int phys_fd,
276 unsigned long long offset, int done, void **data);
277extern int unmap(struct mm_id * mm_idp, void *addr, unsigned long len,
278 int done, void **data);
279extern int protect(struct mm_id * mm_idp, unsigned long addr,
280 unsigned long len, int r, int w, int x, int done,
281 void **data);
282
abaf6977
GS		 283/* skas/process.c */
284extern int is_skas_winch(int pid, int fd, void *data);
285extern int start_userspace(unsigned long stub_stack);
286extern int copy_context_skas0(unsigned long stack, int pid);
287extern void userspace(union uml_pt_regs *regs);
288extern void map_stub_pages(int fd, unsigned long code,
289 unsigned long data, unsigned long stack);
290extern void new_thread(void *stack, void **switch_buf_ptr,
291 void **fork_buf_ptr, void (*handler)(int));
292extern void thread_wait(void *sw, void *fb);
293extern void switch_threads(void *me, void *next);
294extern int start_idle_thread(void *stack, void *switch_buf_ptr,
295 void **fork_buf_ptr);
296extern void initial_thread_cb_skas(void (*proc)(void *),
297 void *arg);
298extern void halt_skas(void);
299extern void reboot_skas(void);
300
63ae2a94
JD		 301/* irq.c */
302extern int os_waiting_for_events(struct irq_fd *active_fds);
303extern int os_isatty(int fd);
304extern int os_create_pollfd(int fd, int events, void *tmp_pfd, int size_tmpfds);
305extern void os_free_irq_by_cb(int (*test)(struct irq_fd *, void *), void *arg,
306 struct irq_fd *active_fds, struct irq_fd ***last_irq_ptr2);
307extern void os_free_irq_later(struct irq_fd *active_fds,
308 int irq, void *dev_id);
309extern int os_get_pollfd(int i);
310extern void os_set_pollfd(int i, int fd);
311extern void os_set_ioignore(void);
312extern void init_irq_signals(int on_sigstack);
313
f206aabb
JD		 314/* sigio.c */
315extern void write_sigio_workaround(void);
316extern int add_sigio_fd(int fd, int read);
317extern int ignore_sigio_fd(int fd);
318
2264c475 319#endif
kernel source for telekom puls (alcatel/mediatek)