[linux-2.6-block.git] / arch / um / include / os.h

/*
 * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 * Licensed under the GPL
 */

#ifndef __OS_H__
#define __OS_H__

#include <stdarg.h>
#include "irq_user.h"
#include "kern_util.h"
#include "longjmp.h"
#include "mm_id.h"
#include "sysdep/tls.h"
#include "../os/include/file.h"

#define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR))

#define OS_TYPE_FILE 1
#define OS_TYPE_DIR 2
#define OS_TYPE_SYMLINK 3
#define OS_TYPE_CHARDEV 4
#define OS_TYPE_BLOCKDEV 5
#define OS_TYPE_FIFO 6
#define OS_TYPE_SOCK 7

/* os_access() flags */
#define OS_ACC_F_OK    0       /* Test for existence.  */
#define OS_ACC_X_OK    1       /* Test for execute permission.  */
#define OS_ACC_W_OK    2       /* Test for write permission.  */
#define OS_ACC_R_OK    4       /* Test for read permission.  */
#define OS_ACC_RW_OK   (OS_ACC_W_OK | OS_ACC_R_OK) /* Test for RW permission */

/*
 * types taken from stat_file() in hostfs_user.c
 * (if they are wrong here, they are wrong there...).
 */
struct uml_stat {
	int                ust_dev;        /* device */
	unsigned long long ust_ino;        /* inode */
	int                ust_mode;       /* protection */
	int                ust_nlink;      /* number of hard links */
	int                ust_uid;        /* user ID of owner */
	int                ust_gid;        /* group ID of owner */
	unsigned long long ust_size;       /* total size, in bytes */
	int                ust_blksize;    /* blocksize for filesystem I/O */
	unsigned long long ust_blocks;     /* number of blocks allocated */
	unsigned long      ust_atime;      /* time of last access */
	unsigned long      ust_mtime;      /* time of last modification */
	unsigned long      ust_ctime;      /* time of last change */
};

struct openflags {
	unsigned int r : 1;
	unsigned int w : 1;
	unsigned int s : 1;	/* O_SYNC */
	unsigned int c : 1;	/* O_CREAT */
	unsigned int t : 1;	/* O_TRUNC */
	unsigned int a : 1;	/* O_APPEND */
	unsigned int e : 1;	/* O_EXCL */
	unsigned int cl : 1;    /* FD_CLOEXEC */
};

#define OPENFLAGS() ((struct openflags) { .r = 0, .w = 0, .s = 0, .c = 0, \
					  .t = 0, .a = 0, .e = 0, .cl = 0 })

static inline struct openflags of_read(struct openflags flags)
{
	flags.r = 1;
	return flags;
}

static inline struct openflags of_write(struct openflags flags)
{
	flags.w = 1;
	return flags;
}

static inline struct openflags of_rdwr(struct openflags flags)
{
	return of_read(of_write(flags));
}

static inline struct openflags of_set_rw(struct openflags flags, int r, int w)
{
	flags.r = r;
	flags.w = w;
	return flags;
}

static inline struct openflags of_sync(struct openflags flags)
{
	flags.s = 1;
	return flags;
}

static inline struct openflags of_create(struct openflags flags)
{
	flags.c = 1;
	return flags;
}

static inline struct openflags of_trunc(struct openflags flags)
{
	flags.t = 1;
	return flags;
}

static inline struct openflags of_append(struct openflags flags)
{
	flags.a = 1;
	return flags;
}

static inline struct openflags of_excl(struct openflags flags)
{
	flags.e = 1;
	return flags;
}

static inline struct openflags of_cloexec(struct openflags flags)
{
	flags.cl = 1;
	return flags;
}

/* file.c */
extern int os_stat_file(const char *file_name, struct uml_stat *buf);
extern int os_stat_fd(const int fd, struct uml_stat *buf);
extern int os_access(const char *file, int mode);
extern int os_get_exec_close(int fd, int *close_on_exec);
extern int os_set_exec_close(int fd);
extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg);
extern int os_get_ifname(int fd, char *namebuf);
extern int os_set_slip(int fd);
extern int os_set_owner(int fd, int pid);
extern int os_mode_fd(int fd, int mode);

extern int os_seek_file(int fd, unsigned long long offset);
extern int os_open_file(const char *file, struct openflags flags, int mode);
extern int os_read_file(int fd, void *buf, int len);
extern int os_write_file(int fd, const void *buf, int count);
extern int os_file_size(const char *file, unsigned long long *size_out);
extern int os_file_modtime(const char *file, unsigned long *modtime);
extern int os_pipe(int *fd, int stream, int close_on_exec);
extern int os_set_fd_async(int fd, int owner);
extern int os_clear_fd_async(int fd);
extern int os_set_fd_block(int fd, int blocking);
extern int os_accept_connection(int fd);
extern int os_create_unix_socket(const char *file, int len, int close_on_exec);
extern int os_shutdown_socket(int fd, int r, int w);
extern void os_close_file(int fd);
extern int os_rcv_fd(int fd, int *helper_pid_out);
extern int create_unix_socket(char *file, int len, int close_on_exec);
extern int os_connect_socket(const char *name);
extern int os_file_type(char *file);
extern int os_file_mode(const char *file, struct openflags *mode_out);
extern int os_lock_file(int fd, int excl);
extern void os_flush_stdout(void);
extern int os_stat_filesystem(char *path, long *bsize_out,
			      long long *blocks_out, long long *bfree_out,
			      long long *bavail_out, long long *files_out,
			      long long *ffree_out, void *fsid_out,
			      int fsid_size, long *namelen_out,
			      long *spare_out);
extern int os_change_dir(char *dir);
extern int os_fchange_dir(int fd);

/* start_up.c */
extern void os_early_checks(void);
extern int can_do_skas(void);
extern void os_check_bugs(void);
extern void check_host_supports_tls(int *supports_tls, int *tls_min);

/* Make sure they are clear when running in TT mode. Required by
 * SEGV_MAYBE_FIXABLE */
#define clear_can_do_skas() do { ptrace_faultinfo = proc_mm = 0; } while (0)

/* mem.c */
extern int create_mem_file(unsigned long long len);

/* process.c */
extern unsigned long os_process_pc(int pid);
extern int os_process_parent(int pid);
extern void os_stop_process(int pid);
extern void os_kill_process(int pid, int reap_child);
extern void os_kill_ptraced_process(int pid, int reap_child);
extern long os_ptrace_ldt(long pid, long addr, long data);

extern int os_getpid(void);
extern int os_getpgrp(void);

extern void init_new_thread_signals(void);
extern int run_kernel_thread(int (*fn)(void *), void *arg, jmp_buf **jmp_ptr);

extern int os_map_memory(void *virt, int fd, unsigned long long off,
			 unsigned long len, int r, int w, int x);
extern int os_protect_memory(void *addr, unsigned long len,
			     int r, int w, int x);
extern int os_unmap_memory(void *addr, int len);
extern int os_drop_memory(void *addr, int length);
extern int can_drop_memory(void);
extern void os_flush_stdout(void);

/* uaccess.c */
extern unsigned long __do_user_copy(void *to, const void *from, int n,
				    void **fault_addr, jmp_buf **fault_catcher,
				    void (*op)(void *to, const void *from,
					       int n), int *faulted_out);

/* execvp.c */
extern int execvp_noalloc(char *buf, const char *file, char *const argv[]);
/* helper.c */
extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv);
extern int run_helper_thread(int (*proc)(void *), void *arg,
			     unsigned int flags, unsigned long *stack_out);
extern int helper_wait(int pid, int nohang, char *pname);


/* tls.c */
extern int os_set_thread_area(user_desc_t *info, int pid);
extern int os_get_thread_area(user_desc_t *info, int pid);

/* umid.c */
extern int umid_file_name(char *name, char *buf, int len);
extern int set_umid(char *name);
extern char *get_umid(void);

/* signal.c */
extern void timer_init(void);
extern void set_sigstack(void *sig_stack, int size);
extern void remove_sigstack(void);
extern void set_handler(int sig, void (*handler)(int), int flags, ...);
extern int change_sig(int signal, int on);
extern void block_signals(void);
extern void unblock_signals(void);
extern int get_signals(void);
extern int set_signals(int enable);

/* trap.c */
extern void os_fill_handlinfo(struct kern_handlers h);

/* util.c */
extern void stack_protections(unsigned long address);
extern int raw(int fd);
extern void setup_machinename(char *machine_out);
extern void setup_hostinfo(char *buf, int len);
extern int setjmp_wrapper(void (*proc)(void *, void *), ...);
extern void os_dump_core(void);

/* time.c */
extern void idle_sleep(unsigned long long nsecs);
extern int set_interval(void);
extern int timer_one_shot(int ticks);
extern long long disable_timer(void);
extern void uml_idle_timer(void);
extern long long os_nsecs(void);

/* skas/mem.c */
extern long run_syscall_stub(struct mm_id * mm_idp,
			     int syscall, unsigned long *args, long expected,
			     void **addr, int done);
extern long syscall_stub_data(struct mm_id * mm_idp,
			      unsigned long *data, int data_count,
			      void **addr, void **stub_addr);
extern int map(struct mm_id * mm_idp, unsigned long virt,
	       unsigned long len, int prot, int phys_fd,
	       unsigned long long offset, int done, void **data);
extern int unmap(struct mm_id * mm_idp, unsigned long addr, unsigned long len,
		 int done, void **data);
extern int protect(struct mm_id * mm_idp, unsigned long addr,
		   unsigned long len, unsigned int prot, int done, void **data);

/* skas/process.c */
extern int is_skas_winch(int pid, int fd, void *data);
extern int start_userspace(unsigned long stub_stack);
extern int copy_context_skas0(unsigned long stack, int pid);
extern void save_registers(int pid, struct uml_pt_regs *regs);
extern void restore_registers(int pid, struct uml_pt_regs *regs);
extern void userspace(struct uml_pt_regs *regs);
extern void map_stub_pages(int fd, unsigned long code,
			   unsigned long data, unsigned long stack);
extern void new_thread(void *stack, jmp_buf *buf, void (*handler)(void));
extern void switch_threads(jmp_buf *me, jmp_buf *you);
extern int start_idle_thread(void *stack, jmp_buf *switch_buf);
extern void initial_thread_cb_skas(void (*proc)(void *),
				 void *arg);
extern void halt_skas(void);
extern void reboot_skas(void);

/* irq.c */
extern int os_waiting_for_events(struct irq_fd *active_fds);
extern int os_create_pollfd(int fd, int events, void *tmp_pfd, int size_tmpfds);
extern void os_free_irq_by_cb(int (*test)(struct irq_fd *, void *), void *arg,
		struct irq_fd *active_fds, struct irq_fd ***last_irq_ptr2);
extern void os_free_irq_later(struct irq_fd *active_fds,
		int irq, void *dev_id);
extern int os_get_pollfd(int i);
extern void os_set_pollfd(int i, int fd);
extern void os_set_ioignore(void);
extern void init_irq_signals(int on_sigstack);

/* sigio.c */
extern int add_sigio_fd(int fd);
extern int ignore_sigio_fd(int fd);
extern void maybe_sigio_broken(int fd, int read);

/* skas/trap */
extern void sig_handler_common_skas(int sig, void *sc_ptr);

/* sys-x86_64/prctl.c */
extern int os_arch_prctl(int pid, int code, unsigned long *addr);

/* tty.c */
int get_pty(void);

#endif
Commit	Line	Data
329c6e42	1	/*
ba180fd4	2	* Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
1da177e4 LT	3	* Licensed under the GPL
	4	*/
	5
	6	#ifndef __OS_H__
	7	#define __OS_H__
	8
ba180fd4	9	#include <stdarg.h>
63ae2a94	10	#include "irq_user.h"
ba180fd4 JD	11	#include "kern_util.h"
	12	#include "longjmp.h"
	13	#include "mm_id.h"
dd77aec0	14	#include "sysdep/tls.h"
ba180fd4	15	#include "../os/include/file.h"
1da177e4	16
24fa6c08 JD	17	#define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR))
24fa6c08 JD	18
329c6e42 JD	19	#define OS_TYPE_FILE 1
	20	#define OS_TYPE_DIR 2
	21	#define OS_TYPE_SYMLINK 3
1da177e4 LT	22	#define OS_TYPE_CHARDEV 4
	23	#define OS_TYPE_BLOCKDEV 5
	24	#define OS_TYPE_FIFO 6
	25	#define OS_TYPE_SOCK 7
	26
	27	/* os_access() flags */
	28	#define OS_ACC_F_OK 0 /* Test for existence. */
	29	#define OS_ACC_X_OK 1 /* Test for execute permission. */
	30	#define OS_ACC_W_OK 2 /* Test for write permission. */
	31	#define OS_ACC_R_OK 4 /* Test for read permission. */
	32	#define OS_ACC_RW_OK (OS_ACC_W_OK \| OS_ACC_R_OK) /* Test for RW permission */
	33
	34	/*
	35	* types taken from stat_file() in hostfs_user.c
	36	* (if they are wrong here, they are wrong there...).
	37	*/
	38	struct uml_stat {
	39	int ust_dev; /* device */
	40	unsigned long long ust_ino; /* inode */
	41	int ust_mode; /* protection */
	42	int ust_nlink; /* number of hard links */
	43	int ust_uid; /* user ID of owner */
	44	int ust_gid; /* group ID of owner */
	45	unsigned long long ust_size; /* total size, in bytes */
	46	int ust_blksize; /* blocksize for filesystem I/O */
	47	unsigned long long ust_blocks; /* number of blocks allocated */
	48	unsigned long ust_atime; /* time of last access */
	49	unsigned long ust_mtime; /* time of last modification */
	50	unsigned long ust_ctime; /* time of last change */
	51	};
	52
	53	struct openflags {
	54	unsigned int r : 1;
	55	unsigned int w : 1;
	56	unsigned int s : 1; /* O_SYNC */
	57	unsigned int c : 1; /* O_CREAT */
	58	unsigned int t : 1; /* O_TRUNC */
	59	unsigned int a : 1; /* O_APPEND */
	60	unsigned int e : 1; /* O_EXCL */
	61	unsigned int cl : 1; /* FD_CLOEXEC */
	62	};
	63
	64	#define OPENFLAGS() ((struct openflags) { .r = 0, .w = 0, .s = 0, .c = 0, \
329c6e42	65	.t = 0, .a = 0, .e = 0, .cl = 0 })
1da177e4 LT	66
	67	static inline struct openflags of_read(struct openflags flags)
	68	{
329c6e42 JD	69	flags.r = 1;
329c6e42 JD	70	return flags;
1da177e4 LT	71	}
	72
	73	static inline struct openflags of_write(struct openflags flags)
	74	{
329c6e42 JD	75	flags.w = 1;
329c6e42 JD	76	return flags;
1da177e4 LT	77	}
	78
	79	static inline struct openflags of_rdwr(struct openflags flags)
	80	{
329c6e42	81	return of_read(of_write(flags));
1da177e4 LT	82	}
	83
	84	static inline struct openflags of_set_rw(struct openflags flags, int r, int w)
	85	{
	86	flags.r = r;
	87	flags.w = w;
329c6e42	88	return flags;
1da177e4 LT	89	}
	90
	91	static inline struct openflags of_sync(struct openflags flags)
329c6e42 JD	92	{
	93	flags.s = 1;
	94	return flags;
1da177e4 LT	95	}
	96
	97	static inline struct openflags of_create(struct openflags flags)
329c6e42 JD	98	{
	99	flags.c = 1;
	100	return flags;
1da177e4	101	}
329c6e42	102
1da177e4	103	static inline struct openflags of_trunc(struct openflags flags)
329c6e42 JD	104	{
	105	flags.t = 1;
	106	return flags;
1da177e4	107	}
329c6e42	108
1da177e4	109	static inline struct openflags of_append(struct openflags flags)
329c6e42 JD	110	{
	111	flags.a = 1;
	112	return flags;
1da177e4	113	}
329c6e42	114
1da177e4	115	static inline struct openflags of_excl(struct openflags flags)
329c6e42 JD	116	{
	117	flags.e = 1;
	118	return flags;
1da177e4 LT	119	}
	120
	121	static inline struct openflags of_cloexec(struct openflags flags)
329c6e42 JD	122	{
	123	flags.cl = 1;
	124	return flags;
1da177e4	125	}
329c6e42	126
cf9165a5	127	/* file.c */
1da177e4 LT	128	extern int os_stat_file(const char file_name, struct uml_stat buf);
	129	extern int os_stat_fd(const int fd, struct uml_stat *buf);
	130	extern int os_access(const char *file, int mode);
1da177e4	131	extern int os_get_exec_close(int fd, int *close_on_exec);
512b6fb1	132	extern int os_set_exec_close(int fd);
1da177e4	133	extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg);
1da177e4 LT	134	extern int os_get_ifname(int fd, char *namebuf);
	135	extern int os_set_slip(int fd);
	136	extern int os_set_owner(int fd, int pid);
1da177e4 LT	137	extern int os_mode_fd(int fd, int mode);
1da177e4 LT	138
ba180fd4	139	extern int os_seek_file(int fd, unsigned long long offset);
c9a3072d	140	extern int os_open_file(const char *file, struct openflags flags, int mode);
1da177e4 LT	141	extern int os_read_file(int fd, void *buf, int len);
1da177e4 LT	142	extern int os_write_file(int fd, const void *buf, int count);
c9a3072d WC	143	extern int os_file_size(const char file, unsigned long long size_out);
c9a3072d WC	144	extern int os_file_modtime(const char file, unsigned long modtime);
1da177e4 LT	145	extern int os_pipe(int *fd, int stream, int close_on_exec);
	146	extern int os_set_fd_async(int fd, int owner);
	147	extern int os_clear_fd_async(int fd);
	148	extern int os_set_fd_block(int fd, int blocking);
	149	extern int os_accept_connection(int fd);
c9a3072d	150	extern int os_create_unix_socket(const char *file, int len, int close_on_exec);
1da177e4 LT	151	extern int os_shutdown_socket(int fd, int r, int w);
	152	extern void os_close_file(int fd);
	153	extern int os_rcv_fd(int fd, int *helper_pid_out);
	154	extern int create_unix_socket(char *file, int len, int close_on_exec);
c9a3072d	155	extern int os_connect_socket(const char *name);
1da177e4	156	extern int os_file_type(char *file);
c9a3072d	157	extern int os_file_mode(const char file, struct openflags mode_out);
1da177e4	158	extern int os_lock_file(int fd, int excl);
cf9165a5 JD	159	extern void os_flush_stdout(void);
	160	extern int os_stat_filesystem(char path, long bsize_out,
	161	long long blocks_out, long long bfree_out,
	162	long long bavail_out, long long files_out,
	163	long long ffree_out, void fsid_out,
	164	int fsid_size, long *namelen_out,
	165	long *spare_out);
	166	extern int os_change_dir(char *dir);
	167	extern int os_fchange_dir(int fd);
1da177e4	168
60d339f6 GS	169	/* start_up.c */
	170	extern void os_early_checks(void);
	171	extern int can_do_skas(void);
8e367065	172	extern void os_check_bugs(void);
3feb8856	173	extern void check_host_supports_tls(int supports_tls, int tls_min);
60d339f6	174
8923648c PBG	175	/* Make sure they are clear when running in TT mode. Required by
	176	* SEGV_MAYBE_FIXABLE */
	177	#define clear_can_do_skas() do { ptrace_faultinfo = proc_mm = 0; } while (0)
	178
0f80bc85	179	/* mem.c */
ae173816	180	extern int create_mem_file(unsigned long long len);
0f80bc85	181
60d339f6	182	/* process.c */
1da177e4 LT	183	extern unsigned long os_process_pc(int pid);
	184	extern int os_process_parent(int pid);
	185	extern void os_stop_process(int pid);
	186	extern void os_kill_process(int pid, int reap_child);
	187	extern void os_kill_ptraced_process(int pid, int reap_child);
07f4e2c6 PBG	188	extern long os_ptrace_ldt(long pid, long addr, long data);
07f4e2c6 PBG	189
1da177e4	190	extern int os_getpid(void);
cd2ee4a3	191	extern int os_getpgrp(void);
07f4e2c6	192
e64bd134	193	extern void init_new_thread_signals(void);
fab95c55	194	extern int run_kernel_thread(int (fn)(void ), void arg, jmp_buf *jmp_ptr);
1da177e4 LT	195
	196	extern int os_map_memory(void *virt, int fd, unsigned long long off,
	197	unsigned long len, int r, int w, int x);
329c6e42	198	extern int os_protect_memory(void *addr, unsigned long len,
1da177e4 LT	199	int r, int w, int x);
1da177e4 LT	200	extern int os_unmap_memory(void *addr, int len);
02dea087 JD	201	extern int os_drop_memory(void *addr, int length);
02dea087 JD	202	extern int can_drop_memory(void);
1da177e4	203	extern void os_flush_stdout(void);
1da177e4	204
bb578426 GS	205	/* uaccess.c */
bb578426 GS	206	extern unsigned long __do_user_copy(void to, const void from, int n,
fab95c55	207	void fault_addr, jmp_buf fault_catcher,
bb578426 GS	208	void (op)(void to, const void *from,
	209	int n), int *faulted_out);
	210
5d48545e PBG	211	/* execvp.c */
5d48545e PBG	212	extern int execvp_noalloc(char buf, const char file, char *const argv[]);
ff5c6ff5	213	/* helper.c */
c4399016	214	extern int run_helper(void (pre_exec)(void ), void pre_data, char *argv);
ff5c6ff5	215	extern int run_helper_thread(int (proc)(void ), void *arg,
c4399016	216	unsigned int flags, unsigned long *stack_out);
4dbed85a	217	extern int helper_wait(int pid, int nohang, char *pname);
ff5c6ff5	218
aa6758d4 PBG	219
aa6758d4 PBG	220	/* tls.c */
dd77aec0 PBG	221	extern int os_set_thread_area(user_desc_t *info, int pid);
dd77aec0 PBG	222	extern int os_get_thread_area(user_desc_t *info, int pid);
1da177e4	223
dd77aec0	224	/* umid.c */
2264c475	225	extern int umid_file_name(char name, char buf, int len);
7eebe8a9 JD	226	extern int set_umid(char *name);
7eebe8a9 JD	227	extern char *get_umid(void);
2264c475	228
0805d89c	229	/* signal.c */
78a26e25	230	extern void timer_init(void);
0805d89c GS	231	extern void set_sigstack(void *sig_stack, int size);
	232	extern void remove_sigstack(void);
	233	extern void set_handler(int sig, void (*handler)(int), int flags, ...);
	234	extern int change_sig(int signal, int on);
	235	extern void block_signals(void);
	236	extern void unblock_signals(void);
	237	extern int get_signals(void);
	238	extern int set_signals(int enable);
	239
ea2ba7dc GS	240	/* trap.c */
ea2ba7dc GS	241	extern void os_fill_handlinfo(struct kern_handlers h);
ea2ba7dc	242
4fef0c10 GS	243	/* util.c */
4fef0c10 GS	244	extern void stack_protections(unsigned long address);
4fef0c10 GS	245	extern int raw(int fd);
4fef0c10 GS	246	extern void setup_machinename(char *machine_out);
b4ffb6ad	247	extern void setup_hostinfo(char *buf, int len);
4fef0c10	248	extern int setjmp_wrapper(void (proc)(void , void *), ...);
63843c26	249	extern void os_dump_core(void);
4fef0c10	250
cff65c4f	251	/* time.c */
b160fb63	252	extern void idle_sleep(unsigned long long nsecs);
a2f018bf	253	extern int set_interval(void);
d2753a6d	254	extern int timer_one_shot(int ticks);
5f734614	255	extern long long disable_timer(void);
cff65c4f	256	extern void uml_idle_timer(void);
5f734614	257	extern long long os_nsecs(void);
cff65c4f	258
f45d9fc9 GS	259	/* skas/mem.c */
	260	extern long run_syscall_stub(struct mm_id * mm_idp,
	261	int syscall, unsigned long *args, long expected,
	262	void **addr, int done);
	263	extern long syscall_stub_data(struct mm_id * mm_idp,
	264	unsigned long *data, int data_count,
	265	void addr, void stub_addr);
	266	extern int map(struct mm_id * mm_idp, unsigned long virt,
16dd07bc	267	unsigned long len, int prot, int phys_fd,
f45d9fc9	268	unsigned long long offset, int done, void **data);
64f60841	269	extern int unmap(struct mm_id * mm_idp, unsigned long addr, unsigned long len,
f45d9fc9 GS	270	int done, void **data);
f45d9fc9 GS	271	extern int protect(struct mm_id * mm_idp, unsigned long addr,
16dd07bc	272	unsigned long len, unsigned int prot, int done, void **data);
f45d9fc9	273
abaf6977 GS	274	/* skas/process.c */
	275	extern int is_skas_winch(int pid, int fd, void *data);
	276	extern int start_userspace(unsigned long stub_stack);
	277	extern int copy_context_skas0(unsigned long stack, int pid);
77bf4400 JD	278	extern void save_registers(int pid, struct uml_pt_regs *regs);
	279	extern void restore_registers(int pid, struct uml_pt_regs *regs);
	280	extern void userspace(struct uml_pt_regs *regs);
abaf6977 GS	281	extern void map_stub_pages(int fd, unsigned long code,
abaf6977 GS	282	unsigned long data, unsigned long stack);
3c917350 JD	283	extern void new_thread(void stack, jmp_buf buf, void (*handler)(void));
	284	extern void switch_threads(jmp_buf me, jmp_buf you);
	285	extern int start_idle_thread(void stack, jmp_buf switch_buf);
abaf6977 GS	286	extern void initial_thread_cb_skas(void (proc)(void ),
	287	void *arg);
	288	extern void halt_skas(void);
	289	extern void reboot_skas(void);
	290
63ae2a94 JD	291	/* irq.c */
63ae2a94 JD	292	extern int os_waiting_for_events(struct irq_fd *active_fds);
63ae2a94 JD	293	extern int os_create_pollfd(int fd, int events, void *tmp_pfd, int size_tmpfds);
	294	extern void os_free_irq_by_cb(int (test)(struct irq_fd , void ), void arg,
	295	struct irq_fd active_fds, struct irq_fd **last_irq_ptr2);
	296	extern void os_free_irq_later(struct irq_fd *active_fds,
	297	int irq, void *dev_id);
	298	extern int os_get_pollfd(int i);
	299	extern void os_set_pollfd(int i, int fd);
	300	extern void os_set_ioignore(void);
	301	extern void init_irq_signals(int on_sigstack);
	302
f206aabb	303	/* sigio.c */
19bdf040	304	extern int add_sigio_fd(int fd);
f206aabb	305	extern int ignore_sigio_fd(int fd);
8e64d96a	306	extern void maybe_sigio_broken(int fd, int read);
f206aabb	307
cf9165a5 JD	308	/* skas/trap */
cf9165a5 JD	309	extern void sig_handler_common_skas(int sig, void *sc_ptr);
cf9165a5	310
24fa6c08	311	/* sys-x86_64/prctl.c */
f355559c JD	312	extern int os_arch_prctl(int pid, int code, unsigned long *addr);
f355559c JD	313
24fa6c08 JD	314	/* tty.c */
	315	int get_pty(void);
	316
2264c475	317	#endif