Commit | Line | Data |
---|---|---|
da7c5cc6 KM |
1 | /* |
2 | * Copyright (c) 1982 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | * | |
6 | * @(#)subr_prf.c 6.7 (Berkeley) %G% | |
7 | */ | |
8cbb423c | 8 | |
94368568 JB |
9 | #include "param.h" |
10 | #include "systm.h" | |
11 | #include "seg.h" | |
12 | #include "buf.h" | |
13 | #include "conf.h" | |
14 | #include "reboot.h" | |
15 | #include "vm.h" | |
16 | #include "msgbuf.h" | |
17 | #include "dir.h" | |
18 | #include "user.h" | |
19 | #include "proc.h" | |
3358b36b | 20 | #include "ioctl.h" |
94368568 | 21 | #include "tty.h" |
bd10af3f | 22 | #include "syslog.h" |
96d38f03 | 23 | |
e3d5bfde SL |
24 | #ifdef vax |
25 | #include "../vax/mtpr.h" | |
26 | #endif | |
27 | ||
34ef3482 RC |
28 | #define TOCONS 0x1 |
29 | #define TOTTY 0x2 | |
30 | #define TOLOG 0x4 | |
31 | ||
8cbb423c BJ |
32 | /* |
33 | * In case console is off, | |
34 | * panicstr contains argument to last | |
35 | * call to panic. | |
36 | */ | |
8cbb423c BJ |
37 | char *panicstr; |
38 | ||
39 | /* | |
40 | * Scaled down version of C Library printf. | |
b725a0ca BJ |
41 | * Used to print diagnostic information directly on console tty. |
42 | * Since it is not interrupt driven, all system activities are | |
43 | * suspended. Printf should not be used for chit-chat. | |
44 | * | |
45 | * One additional format: %b is supported to decode error registers. | |
46 | * Usage is: | |
47 | * printf("reg=%b\n", regval, "<base><arg>*"); | |
48 | * Where <base> is the output base expressed as a control character, | |
49 | * e.g. \10 gives octal; \20 gives hex. Each arg is a sequence of | |
50 | * characters, the first of which gives the bit number to be inspected | |
51 | * (origin 1), and the next characters (up to a control character, i.e. | |
52 | * a character <= 32), give the name of the register. Thus | |
53 | * printf("reg=%b\n", 3, "\10\2BITTWO\1BITONE\n"); | |
54 | * would produce output: | |
8d907ccf | 55 | * reg=3<BITTWO,BITONE> |
8cbb423c BJ |
56 | */ |
57 | /*VARARGS1*/ | |
58 | printf(fmt, x1) | |
b725a0ca BJ |
59 | char *fmt; |
60 | unsigned x1; | |
96d38f03 BJ |
61 | { |
62 | ||
34ef3482 RC |
63 | prf(fmt, &x1, TOCONS | TOLOG, (struct tty *)0); |
64 | logwakeup(); | |
96d38f03 BJ |
65 | } |
66 | ||
843267b1 | 67 | /* |
8d907ccf | 68 | * Uprintf prints to the current user's terminal |
b725a0ca | 69 | * and does no watermark checking - (so no verbose messages). |
843267b1 BJ |
70 | */ |
71 | /*VARARGS1*/ | |
72 | uprintf(fmt, x1) | |
b725a0ca | 73 | char *fmt; |
843267b1 | 74 | unsigned x1; |
96d38f03 BJ |
75 | { |
76 | ||
34ef3482 RC |
77 | prf(fmt, &x1, TOTTY, u.u_ttyp); |
78 | } | |
79 | ||
bd10af3f MK |
80 | /* |
81 | * tprintf prints on the specified terminal (console if none) | |
82 | * and logs the message. It is designed for error messages from | |
83 | * single-open devices, and may be called from interrupt level. | |
84 | */ | |
34ef3482 RC |
85 | /*VARARGS2*/ |
86 | tprintf(ttyp, fmt, x1) | |
87 | struct tty *ttyp; | |
88 | char *fmt; | |
89 | unsigned x1; | |
90 | { | |
91 | ||
bd10af3f | 92 | prf(fmt, &x1, TOTTY | TOLOG, ttyp); |
34ef3482 RC |
93 | } |
94 | ||
95 | /* | |
96 | * Log writes to the log buffer, | |
8d907ccf | 97 | * and guarantees not to sleep (so can be called by interrupt routines). |
bd10af3f | 98 | * If there is no process reading the log yet, it writes to the console also. |
34ef3482 RC |
99 | */ |
100 | /*VARARGS2*/ | |
101 | log(level, fmt, x1) | |
102 | char *fmt; | |
103 | unsigned x1; | |
104 | { | |
105 | register s = splhigh(); | |
bd10af3f | 106 | extern int log_open; |
34ef3482 RC |
107 | |
108 | putchar('<', TOLOG, (struct tty *)0); | |
109 | printn(level, 10, TOLOG, (struct tty *)0); | |
110 | putchar('>', TOLOG, (struct tty *)0); | |
111 | prf(fmt, &x1, TOLOG, (struct tty *)0); | |
112 | splx(s); | |
bd10af3f MK |
113 | if (!log_open) |
114 | prf(fmt, &x1, TOCONS, (struct tty *)0); | |
34ef3482 | 115 | logwakeup(); |
96d38f03 BJ |
116 | } |
117 | ||
34ef3482 | 118 | prf(fmt, adx, flags, ttyp) |
b725a0ca BJ |
119 | register char *fmt; |
120 | register u_int *adx; | |
34ef3482 | 121 | struct tty *ttyp; |
8cbb423c | 122 | { |
d5726689 | 123 | register int b, c, i; |
8cbb423c | 124 | char *s; |
3c79e4ff | 125 | int any; |
8cbb423c | 126 | |
8cbb423c | 127 | loop: |
843267b1 | 128 | while ((c = *fmt++) != '%') { |
34ef3482 | 129 | if (c == '\0') |
8cbb423c | 130 | return; |
34ef3482 | 131 | putchar(c, flags, ttyp); |
8cbb423c | 132 | } |
843267b1 | 133 | again: |
8cbb423c | 134 | c = *fmt++; |
b725a0ca | 135 | /* THIS CODE IS VAX DEPENDENT IN HANDLING %l? AND %c */ |
843267b1 BJ |
136 | switch (c) { |
137 | ||
138 | case 'l': | |
139 | goto again; | |
140 | case 'x': case 'X': | |
141 | b = 16; | |
142 | goto number; | |
143 | case 'd': case 'D': | |
144 | case 'u': /* what a joke */ | |
145 | b = 10; | |
146 | goto number; | |
147 | case 'o': case 'O': | |
148 | b = 8; | |
149 | number: | |
34ef3482 | 150 | printn((u_long)*adx, b, flags, ttyp); |
843267b1 BJ |
151 | break; |
152 | case 'c': | |
d5726689 BJ |
153 | b = *adx; |
154 | for (i = 24; i >= 0; i -= 8) | |
155 | if (c = (b >> i) & 0x7f) | |
34ef3482 | 156 | putchar(c, flags, ttyp); |
843267b1 | 157 | break; |
3c79e4ff BJ |
158 | case 'b': |
159 | b = *adx++; | |
160 | s = (char *)*adx; | |
34ef3482 | 161 | printn((u_long)b, *s++, flags, ttyp); |
3c79e4ff BJ |
162 | any = 0; |
163 | if (b) { | |
3c79e4ff BJ |
164 | while (i = *s++) { |
165 | if (b & (1 << (i-1))) { | |
8d907ccf | 166 | putchar(any? ',' : '<', flags, ttyp); |
3c79e4ff BJ |
167 | any = 1; |
168 | for (; (c = *s) > 32; s++) | |
34ef3482 | 169 | putchar(c, flags, ttyp); |
3c79e4ff BJ |
170 | } else |
171 | for (; *s > 32; s++) | |
172 | ; | |
173 | } | |
1ce587f2 | 174 | if (any) |
34ef3482 | 175 | putchar('>', flags, ttyp); |
3c79e4ff BJ |
176 | } |
177 | break; | |
178 | ||
843267b1 | 179 | case 's': |
8cbb423c | 180 | s = (char *)*adx; |
96d38f03 | 181 | while (c = *s++) |
34ef3482 | 182 | putchar(c, flags, ttyp); |
843267b1 | 183 | break; |
2bb8d359 BJ |
184 | |
185 | case '%': | |
34ef3482 | 186 | putchar('%', flags, ttyp); |
2bb8d359 | 187 | break; |
8cbb423c BJ |
188 | } |
189 | adx++; | |
190 | goto loop; | |
191 | } | |
192 | ||
b725a0ca BJ |
193 | /* |
194 | * Printn prints a number n in base b. | |
195 | * We don't use recursion to avoid deep kernel stacks. | |
196 | */ | |
34ef3482 | 197 | printn(n, b, flags, ttyp) |
a0eab615 | 198 | u_long n; |
34ef3482 | 199 | struct tty *ttyp; |
8cbb423c | 200 | { |
d5726689 | 201 | char prbuf[11]; |
843267b1 | 202 | register char *cp; |
8cbb423c | 203 | |
843267b1 | 204 | if (b == 10 && (int)n < 0) { |
34ef3482 | 205 | putchar('-', flags, ttyp); |
843267b1 | 206 | n = (unsigned)(-(int)n); |
8cbb423c | 207 | } |
d5726689 | 208 | cp = prbuf; |
843267b1 BJ |
209 | do { |
210 | *cp++ = "0123456789abcdef"[n%b]; | |
211 | n /= b; | |
212 | } while (n); | |
213 | do | |
34ef3482 | 214 | putchar(*--cp, flags, ttyp); |
d5726689 | 215 | while (cp > prbuf); |
8cbb423c BJ |
216 | } |
217 | ||
218 | /* | |
0dc06be8 | 219 | * Panic is called on unresolvable fatal errors. |
b725a0ca BJ |
220 | * It prints "panic: mesg", and then reboots. |
221 | * If we are called twice, then we avoid trying to | |
222 | * sync the disks as this often leads to recursive panics. | |
8cbb423c BJ |
223 | */ |
224 | panic(s) | |
b725a0ca | 225 | char *s; |
8cbb423c | 226 | { |
68503f9a | 227 | int bootopt = RB_AUTOBOOT; |
843267b1 | 228 | |
68503f9a BJ |
229 | if (panicstr) |
230 | bootopt |= RB_NOSYNC; | |
cddce008 | 231 | else { |
961945a8 | 232 | panicstr = s; |
961945a8 | 233 | } |
a9c526c1 | 234 | printf("panic: %s\n", s); |
b725a0ca | 235 | boot(RB_PANIC, bootopt); |
8cbb423c BJ |
236 | } |
237 | ||
fdd11a14 BJ |
238 | /* |
239 | * Warn that a system table is full. | |
240 | */ | |
241 | tablefull(tab) | |
242 | char *tab; | |
243 | { | |
244 | ||
bd10af3f | 245 | log(KERN_FAIL, "%s: table is full\n", tab); |
fdd11a14 BJ |
246 | } |
247 | ||
b725a0ca BJ |
248 | /* |
249 | * Hard error is the preface to plaintive error messages | |
fdd11a14 | 250 | * about failing disk transfers. |
b725a0ca | 251 | */ |
fdd11a14 | 252 | harderr(bp, cp) |
3c79e4ff | 253 | struct buf *bp; |
fdd11a14 | 254 | char *cp; |
8cbb423c BJ |
255 | { |
256 | ||
fdd11a14 BJ |
257 | printf("%s%d%c: hard error sn%d ", cp, |
258 | dkunit(bp), 'a'+(minor(bp->b_dev)&07), bp->b_blkno); | |
8cbb423c | 259 | } |
b725a0ca | 260 | |
96d38f03 | 261 | /* |
843267b1 | 262 | * Print a character on console or users terminal. |
96d38f03 BJ |
263 | * If destination is console then the last MSGBUFS characters |
264 | * are saved in msgbuf for inspection later. | |
265 | */ | |
49c84d3f | 266 | /*ARGSUSED*/ |
8d907ccf | 267 | putchar(c, flags, tp) |
843267b1 | 268 | register int c; |
8d907ccf | 269 | struct tty *tp; |
96d38f03 | 270 | { |
8d907ccf | 271 | extern struct tty cons; |
96d38f03 | 272 | |
34ef3482 | 273 | if (flags & TOTTY) { |
8d907ccf MK |
274 | if (tp == (struct tty *)NULL && (flags & TOCONS) == 0) |
275 | tp = &cons; | |
34ef3482 | 276 | if (tp && (tp->t_state & TS_CARR_ON)) { |
843267b1 BJ |
277 | register s = spl6(); |
278 | if (c == '\n') | |
2752c877 BJ |
279 | (void) ttyoutput('\r', tp); |
280 | (void) ttyoutput(c, tp); | |
d11b28dc RE |
281 | ttstart(tp); |
282 | splx(s); | |
283 | } | |
d11b28dc | 284 | } |
34ef3482 | 285 | if ((flags & TOLOG) && c != '\0' && c != '\r' && c != 0177 |
b4e32d36 | 286 | #ifdef vax |
cddce008 BJ |
287 | && mfpr(MAPEN) |
288 | #endif | |
289 | ) { | |
90f8d91f | 290 | if (msgbuf.msg_magic != MSG_MAGIC) { |
76db4195 SL |
291 | register int i; |
292 | ||
90f8d91f | 293 | msgbuf.msg_magic = MSG_MAGIC; |
34ef3482 | 294 | msgbuf.msg_bufx = msgbuf.msg_bufr = 0; |
76db4195 SL |
295 | for (i=0; i < MSG_BSIZE; i++) |
296 | msgbuf.msg_bufc[i] = 0; | |
90f8d91f BJ |
297 | } |
298 | if (msgbuf.msg_bufx < 0 || msgbuf.msg_bufx >= MSG_BSIZE) | |
299 | msgbuf.msg_bufx = 0; | |
300 | msgbuf.msg_bufc[msgbuf.msg_bufx++] = c; | |
96d38f03 | 301 | } |
34ef3482 RC |
302 | if ((flags & TOCONS) && c != '\0') |
303 | cnputc(c); | |
96d38f03 | 304 | } |