1 /* $OpenBSD: dk.c,v 1.15 2015/10/01 16:08:20 krw Exp $ */
2
3 /*
4 * Copyright 1996 1995 by Open Software Foundation, Inc.
5 * All Rights Reserved
6 *
7 * Permission to use, copy, modify, and distribute this software and
8 * its documentation for any purpose and without fee is hereby granted,
9 * provided that the above copyright notice appears in all copies and
10 * that both the copyright notice and this permission notice appear in
11 * supporting documentation.
12 *
13 * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
14 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
15 * FOR A PARTICULAR PURPOSE.
16 *
17 * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
18 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
19 * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
20 * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
21 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
22 *
23 */
24
25 #include "libsa.h"
26
27 #include <sys/param.h>
28 #include <sys/disklabel.h>
29 #include <sys/reboot.h>
30 #include <machine/pdc.h>
31 #include <machine/iomod.h>
32
33 #include "dev_hppa.h"
34
35 const char *
dk_disklabel(struct hppa_dev * dp,struct disklabel * label)36 dk_disklabel(struct hppa_dev *dp, struct disklabel *label)
37 {
38 char buf[DEV_BSIZE];
39 size_t ret;
40
41 if (iodcstrategy(dp, F_READ, LABELSECTOR, DEV_BSIZE, buf, &ret))
42 if (ret != DEV_BSIZE)
43 return "cannot read disklabel";
44
45 return (getdisklabel(buf, label));
46 }
47
48 int
dkopen(struct open_file * f,...)49 dkopen(struct open_file *f, ...)
50 {
51 struct disklabel *lp;
52 struct hppa_dev *dp = f->f_devdata;
53 const char *st;
54
55 #ifdef DEBUG
56 if (debug)
57 printf("dkopen(%p)\n", f);
58 #endif
59
60 if (!(dp->pz_dev = pdc_findev(-1, PCL_RANDOM)))
61 return ENXIO;
62
63 lp = dp->label;
64 st = NULL;
65
66 #ifdef DEBUG
67 if (debug)
68 printf ("disklabel\n");
69 #endif
70
71 if ((st = dk_disklabel(dp, lp)) != NULL) {
72 #ifdef DEBUG
73 if (debug)
74 printf ("dkopen: %s\n", st);
75 #endif
76 /* we do not know if it's a disk or net, but do not fail */
77 } else {
78 u_int i;
79
80 i = B_PARTITION(dp->bootdev);
81 if (i >= lp->d_npartitions || !lp->d_partitions[i].p_size)
82 return (EPART);
83
84 dp->fsoff = lp->d_partitions[i].p_offset;
85 }
86
87 #ifdef DEBUG
88 if (debug)
89 printf ("dkopen() ret\n");
90 #endif
91 return (0);
92 }
93
94 int
dkclose(f)95 dkclose(f)
96 struct open_file *f;
97 {
98 free (f->f_devdata, sizeof(struct hppa_dev));
99 f->f_devdata = NULL;
100 return 0;
101 }
102