33#if !defined(lint)
34static const char sccsid[] = "@(#)kmem.c 1.4 1/12/96 (C) 1992 Darren Reed";
35static const char rcsid[] = "@(#)$Id$";
36#endif
37
38
39
40static kvm_t *kvm_f = NULL;
41
42
43int openkmem(kern, core)
44 char *kern, *core;
45{
46 kvm_f = kvm_open(kern, core, NULL, O_RDONLY, NULL);
47 if (kvm_f == NULL)
48 {
49 perror("openkmem:open");
50 return -1;
51 }
52 return kvm_f != NULL;
53}
54
55int kmemcpy(buf, pos, n)
56 register char *buf;
57 long pos;
58 register int n;
59{
60 register int r;
61
62 if (!n)
63 return 0;
64
65 if (kvm_f == NULL)
66 if (openkmem(NULL, NULL) == -1)
67 return -1;
68
69 while ((r = kvm_read(kvm_f, pos, buf, n)) < n)
70 if (r <= 0)
71 {
72 fprintf(stderr, "pos=0x%lx ", (u_long)pos);
73 perror("kmemcpy:read");
74 return -1;
75 }
76 else
77 {
78 buf += r;
79 pos += r;
80 n -= r;
81 }
82 return 0;
83}
84
85int kstrncpy(buf, pos, n)
86 register char *buf;
87 long pos;
88 register int n;
89{
90 register int r;
91
92 if (!n)
93 return 0;
94
95 if (kvm_f == NULL)
96 if (openkmem(NULL, NULL) == -1)
97 return -1;
98
99 while (n > 0)
100 {
101 r = kvm_read(kvm_f, pos, buf, 1);
102 if (r <= 0)
103 {
104 fprintf(stderr, "pos=0x%lx ", (u_long)pos);
105 perror("kmemcpy:read");
106 return -1;
107 }
108 else
109 {
110 if (*buf == '\0')
111 break;
112 buf++;
113 pos++;
114 n--;
115 }
116 }
117 return 0;
118}
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