1 /* $OpenBSD: conf.c,v 1.75 2022/10/15 10:12:13 jsg Exp $ */
2
3 /*-
4 * Copyright (c) 1991 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)conf.c 7.9 (Berkeley) 5/28/91
32 */
33
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/buf.h>
37 #include <sys/ioctl.h>
38 #include <sys/tty.h>
39 #include <sys/vnode.h>
40
41 #include <machine/conf.h>
42
43 #include "vnd.h"
44 #include "rd.h"
45 #include "sd.h"
46 #include "st.h"
47 #include "cd.h"
48 #include "ch.h"
49 #include "uk.h"
50 #include "wd.h"
51 bdev_decl(wd);
52 cdev_decl(wd);
53 #if 0
54 #include "fd.h"
55 #else
56 #define NFD 0
57 #endif
58 bdev_decl(fd);
59 cdev_decl(fd);
60
61 struct bdevsw bdevsw[] =
62 {
63 bdev_swap_init(1,sw), /* 0: swap pseudo-device */
64 bdev_notdef(), /* 1: was: concatenated disk driver */
65 bdev_disk_init(NVND,vnd), /* 2: vnode disk driver */
66 bdev_disk_init(NRD,rd), /* 3: RAM disk */
67 bdev_disk_init(NSD,sd), /* 4: SCSI disk */
68 bdev_notdef(), /* 5: was: SCSI tape */
69 bdev_disk_init(NCD,cd), /* 6: SCSI CD-ROM */
70 bdev_disk_init(NFD,fd), /* 7: floppy drive */
71 bdev_disk_init(NWD,wd), /* 8: ST506 drive */
72 bdev_notdef(), /* 9: */
73 bdev_notdef(), /* 10: */
74 bdev_notdef(), /* 11: */
75 bdev_notdef(), /* 12: */
76 bdev_notdef(), /* 13: */
77 bdev_notdef(), /* 14: */
78 };
79 int nblkdev = nitems(bdevsw);
80
81 #include "audio.h"
82 #include "video.h"
83 #include "bio.h"
84 #include "pty.h"
85 #include "wsdisplay.h"
86 #include "wskbd.h"
87 #include "wsmouse.h"
88 #include "wsmux.h"
89
90 #include "bpfilter.h"
91 #include "tun.h"
92
93 #include "ksyms.h"
94 #include "kstat.h"
95
96 #include "lpt.h"
97 cdev_decl(lpt);
98
99 #include "com.h"
100 cdev_decl(com);
101
102 #include "dt.h"
103 #include "pf.h"
104
105 #include "hotplug.h"
106 #include "vscsi.h"
107 #include "pppx.h"
108
109 #ifdef USER_PCICONF
110 #include "pci.h"
111 cdev_decl(pci);
112 #endif
113
114 #include "usb.h"
115 #include "uhid.h"
116 #include "fido.h"
117 #include "ujoy.h"
118 #include "ugen.h"
119 #include "ulpt.h"
120 #include "ucom.h"
121
122 #include "fuse.h"
123
124 struct cdevsw cdevsw[] =
125 {
126 cdev_cn_init(1,cn), /* 0: virtual console */
127 cdev_ctty_init(1,ctty), /* 1: controlling terminal */
128 cdev_mm_init(1,mm), /* 2: /dev/{null,mem,kmem,...} */
129 cdev_notdef(), /* 3 was /dev/drum */
130 cdev_tty_init(NPTY,pts), /* 4: pseudo-tty slave */
131 cdev_ptc_init(NPTY,ptc), /* 5: pseudo-tty master */
132 cdev_log_init(1,log), /* 6: /dev/klog */
133 cdev_notdef(), /* 7: was: concatenated disk */
134 cdev_disk_init(NVND,vnd), /* 8: vnode disk driver */
135 cdev_disk_init(NRD,rd), /* 9: RAM disk */
136 cdev_disk_init(NSD,sd), /* 10: SCSI disk */
137 cdev_tape_init(NST,st), /* 11: SCSI tape */
138 cdev_disk_init(NCD,cd), /* 12: SCSI cd-rom */
139 cdev_ch_init(NCH,ch), /* 13: SCSI changer */
140 cdev_notdef(), /* 14: */
141 cdev_uk_init(NUK,uk), /* 15: SCSI unknown */
142 cdev_fd_init(1,filedesc), /* 16: file descriptor pseudo-device */
143 cdev_bpf_init(NBPFILTER,bpf), /* 17: Berkeley packet filter */
144 cdev_tun_init(NTUN,tun), /* 18: network tunnel */
145 cdev_notdef(), /* 19: was LKM */
146 cdev_random_init(1,random), /* 20: random generator */
147 cdev_pf_init(NPF,pf), /* 21: packet filter */
148 cdev_tty_init(1,pdc), /* 22: PDC device */
149 cdev_tty_init(NCOM,com), /* 23: RS232 */
150 cdev_disk_init(NFD,fd), /* 24: floppy drive */
151 cdev_ksyms_init(NKSYMS,ksyms), /* 25: Kernel symbols device */
152 cdev_lpt_init(NLPT,lpt), /* 26: parallel printer */
153 cdev_wsdisplay_init(NWSDISPLAY, /* 27: workstation console */
154 wsdisplay),
155 cdev_mouse_init(NWSKBD,wskbd), /* 28: keyboards */
156 cdev_mouse_init(NWSMOUSE,wsmouse), /* 29: mice */
157 cdev_mouse_init(NWSMUX,wsmux), /* 30: mux */
158 #ifdef USER_PCICONF
159 cdev_pci_init(NPCI,pci), /* 31: PCI user */
160 #else
161 cdev_notdef(), /* 31: */
162 #endif
163 cdev_dt_init(NDT,dt), /* 32: dynamic tracer */
164 cdev_video_init(NVIDEO,video), /* 33: generic video I/O */
165 cdev_notdef(), /* 34 */
166 cdev_audio_init(NAUDIO,audio), /* 35: /dev/audio */
167 cdev_notdef(), /* 36: was: /dev/crypto */
168 cdev_bio_init(NBIO,bio), /* 37: ioctl tunnel */
169 cdev_ptm_init(NPTY,ptm), /* 38: pseudo-tty ptm device */
170 cdev_disk_init(NWD,wd), /* 39: ST506 disk */
171 cdev_usb_init(NUSB,usb), /* 40: USB controller */
172 cdev_usbdev_init(NUHID,uhid), /* 41: USB generic HID */
173 cdev_usbdev_init(NUGEN,ugen), /* 42: USB generic driver */
174 cdev_ulpt_init(NULPT,ulpt), /* 43: USB printers */
175 cdev_notdef(), /* 44: was urio */
176 cdev_tty_init(NUCOM,ucom), /* 45: USB tty */
177 cdev_notdef(), /* 46: was USB scanners */
178 cdev_hotplug_init(NHOTPLUG,hotplug), /* 47: devices hot plugging */
179 cdev_notdef(), /* 48: */
180 cdev_notdef(), /* 49: */
181 cdev_notdef(), /* 50: */
182 cdev_kstat_init(NKSTAT,kstat), /* 51: kernel statistics */
183 cdev_notdef(), /* 52: */
184 cdev_notdef(), /* 53: */
185 cdev_vscsi_init(NVSCSI,vscsi), /* 54: vscsi */
186 cdev_notdef(),
187 cdev_disk_init(1,diskmap), /* 56: disk mapper */
188 cdev_pppx_init(NPPPX,pppx), /* 57: pppx */
189 cdev_fuse_init(NFUSE,fuse), /* 58: fuse */
190 cdev_tun_init(NTUN,tap), /* 59: Ethernet network tunnel */
191 cdev_notdef(), /* 60: was switch(4) */
192 cdev_fido_init(NFIDO,fido), /* 61: FIDO/U2F security key */
193 cdev_pppx_init(NPPPX,pppac), /* 62: PPP Access Concentrator */
194 cdev_ujoy_init(NUJOY,ujoy), /* 63: USB joystick/gamecontroller */
195 };
196 int nchrdev = nitems(cdevsw);
197
198 int mem_no = 2; /* major device number of memory special file */
199
200 /*
201 * Swapdev is a fake device implemented
202 * in sw.c used only internally to get to swstrategy.
203 * It cannot be provided to the users, because the
204 * swstrategy routine munches the b_dev and b_blkno entries
205 * before calling the appropriate driver. This would horribly
206 * confuse, e.g. the hashing routines. Instead, /dev/drum is
207 * provided as a character (raw) device.
208 */
209 dev_t swapdev = makedev(0, 0);
210
211 const int chrtoblktbl[] = {
212 /*VCHR*/ /*VBLK*/
213 /* 0 */ NODEV,
214 /* 1 */ NODEV,
215 /* 2 */ NODEV,
216 /* 3 */ NODEV,
217 /* 4 */ NODEV,
218 /* 5 */ NODEV,
219 /* 6 */ NODEV,
220 /* 7 */ NODEV,
221 /* 8 */ 2, /* vnd */
222 /* 9 */ 3, /* rd */
223 /* 10 */ 4, /* sd */
224 /* 11 */ NODEV,
225 /* 12 */ 6, /* cd */
226 /* 13 */ NODEV,
227 /* 14 */ NODEV,
228 /* 15 */ NODEV,
229 /* 16 */ NODEV,
230 /* 17 */ NODEV,
231 /* 18 */ NODEV,
232 /* 19 */ NODEV,
233 /* 20 */ NODEV,
234 /* 21 */ NODEV,
235 /* 22 */ NODEV,
236 /* 23 */ NODEV,
237 /* 24 */ 7, /* fd */
238 /* 25 */ NODEV,
239 /* 26 */ NODEV,
240 /* 27 */ NODEV,
241 /* 28 */ NODEV,
242 /* 29 */ NODEV,
243 /* 30 */ NODEV,
244 /* 31 */ NODEV,
245 /* 32 */ NODEV,
246 /* 33 */ NODEV,
247 /* 34 */ NODEV,
248 /* 35 */ NODEV,
249 /* 36 */ NODEV,
250 /* 37 */ NODEV,
251 /* 38 */ NODEV,
252 /* 39 */ 8, /* wd */
253 };
254 const int nchrtoblktbl = nitems(chrtoblktbl);
255
256 /*
257 * Returns true if dev is /dev/zero.
258 */
259 int
iszerodev(dev_t dev)260 iszerodev(dev_t dev)
261 {
262 return (major(dev) == mem_no && minor(dev) == 12);
263 }
264
265 dev_t
getnulldev(void)266 getnulldev(void)
267 {
268 return makedev(mem_no, 2);
269 }
270
271 /*
272 * Returns true if dev is /dev/mem or /dev/kmem.
273 */
274 int
iskmemdev(dev_t dev)275 iskmemdev(dev_t dev)
276 {
277 return (major(dev) == mem_no && minor(dev) < 2);
278 }
279