~kris/9p

9hist

ref: 6de675e78382921545dd741041adeba4a1cd05c5 9hist/gnot/boot.c -rw-r--r-- 2.8 KiB
6de675e7 — David du Colombier Plan 9 from Bell Labs 1990-03-12 36 years ago
                                                                                
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
#include <u.h>
#include <libc.h>

#include "fcall.h"

Fcall	hdr;
char	buf[100];

void	error(char*);
void	sendmsg(int, char*);

main(int argc, char *argv[])
{
	int cfd, fd, n, fu, f;
	char buf[NAMELEN];
	int p[2];

	open("#c/cons", OREAD);
	open("#c/cons", OWRITE);
	open("#c/cons", OWRITE);

	fd = open("#c/user", 0);
	if(fd < 0)
		error("#c/user");
	n = read(fd, buf, sizeof buf-1);
	if(n < 0)
		error("can't read #c/user; please reboot");
	buf[n] = 0;
	print("hello %s!\n", buf);
	close(fd);

	/*
	 *  grab the incon,
	 *  push the dk multiplexor onto it,
	 *  and use line 1 as the signalling channel.
	 */
	cfd = open("#i/ctl", 2);
	if(cfd < 0)
		error("opening #i/ctl");
	sendmsg(cfd, "push dkmux");
	sendmsg(cfd, "config 1 16");
	print("dkmux configured\n");

	/*
	 *  open a datakit channel and call ken via r70, leave the
	 *  incon ctl channel open
	 */
	fd = open("#k/2/data", 2);
	if(fd < 0)
		error("opening #k/2/data");
	cfd = open("#k/2/ctl", 2);
	if(cfd < 0)
		error("opening #k/2/ctl");
	print("#k/2/ctl open\n");
	sendmsg(cfd, "connect r70.nonet!bootes!fs");
	print("connected to r70.nonet!bootes!fs\n");
	close(cfd);

/*
	for(;;){
		print("ding\n");
		sleep(10000);
	}
/**/

	/*
	 *  talk to the file server
	 */
	print("nop...");
	hdr.type = Tnop;
	n = convS2M(&hdr, buf);
	if(write(fd, buf, n) != n)
		error("write nop");
	n = read(fd, buf, sizeof buf);
	if(n <= 0)
		error("read nop");
	if(convM2S(buf, &hdr, n) == 0) {
		print("n = %d; buf = %.2x %.2x %.2x %.2x\n",
			n, buf[0], buf[1], buf[2], buf[3]);
		error("format nop");
	}
	if(hdr.type != Rnop)
		error("not Rnop");

	print("session...");
	hdr.type = Tsession;
	hdr.lang = 'v';
	n = convS2M(&hdr, buf);
	if(write(fd, buf, n) != n)
		error("write session");
	n = read(fd, buf, sizeof buf);
	if(n <= 0)
		error("read session");
	if(convM2S(buf, &hdr, n) == 0)
		error("format session");
	if(hdr.type != Rsession)
		error("not Rsession");
	if(hdr.err){
		print("error %d;", hdr.err);
		error("remote error");
	}

	print("post...");
	sprint(buf, "#s/%s", "bootes");
	f = create(buf, 1, 0666);
	if(f < 0)
		error("create");
	sprint(buf, "%d", fd);
	if(write(f, buf, strlen(buf)) != strlen(buf))
		error("write");
	close(f);
	sprint(buf, "#s/%s", "bootes");
	f = create("#s/boot", 1, 0666);
	if(f < 0)
		error("create");
	sprint(buf, "%d", fd);
	if(write(f, buf, strlen(buf)) != strlen(buf))
		error("write");
	close(f);
	
	print("mount...");
	if(bind("/", "/", MREPL) < 0)
		error("bind");
	if(mount(fd, "/", MAFTER|MCREATE, "") < 0)
		error("mount");
	print("success\n");
	execl("/68020/init", "init", 0);
	error("/68020/init");
}

void
sendmsg(int fd, char *msg)
{
	int n;

	n = strlen(msg);
	if(write(fd, msg, n) != n)
		error(msg);
}

void
error(char *s)
{
	char buf[64];

	errstr(0, buf);
	fprint(2, "boot: %s: %s\n", s, buf);
	exits(0);
}