aboutsummaryrefslogtreecommitdiff
path: root/arch/um/include/os.h
blob: d246d5a24609e3657649cc0793b15233c63392db (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
/* 
 * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
 * Licensed under the GPL
 */

#ifndef __OS_H__
#define __OS_H__

#include "asm/types.h"
#include "../os/include/file.h"

#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); 
}
  
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 void os_print_error(int error, const char* str);
extern int os_get_exec_close(int fd, int *close_on_exec);
extern int os_set_exec_close(int fd, int close_on_exec);
extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg);
extern int os_window_size(int fd, int *rows, int *cols);
extern int os_new_tty_pgrp(int fd, int pid);
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_sigio_async(int master, int slave);
extern int os_mode_fd(int fd, int mode);

extern int os_seek_file(int fd, __u64 offset);
extern int os_open_file(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(char *file, long long *size_out);
extern int os_file_modtime(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(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(char *name);
extern int os_file_type(char *file);
extern int os_file_mode(char *file, struct openflags *mode_out);
extern int os_lock_file(int fd, int excl);

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 void os_usr1_process(int pid);
extern int os_getpid(void);
extern int os_getpgrp(void);

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 void os_flush_stdout(void);
extern unsigned long long os_usecs(void);

#endif

/*
 * Overrides for Emacs so that we follow Linus's tabbing style.
 * Emacs will notice this stuff at the end of the file and automatically
 * adjust the settings for this buffer only.  This must remain at the end
 * of the file.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-file-style: "linux"
 * End:
 */