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
|
#include <u.h>
#include <libc.h>
#include <thread.h>
#include <sunrpc.h>
SunStatus
suncallpack(SunProg *prog, uchar *a, uchar *ea, uchar **pa, SunCall *c)
{
uchar *x;
int (*pack)(uchar*, uchar*, uchar**, SunCall*);
if(pa == nil)
pa = &x;
if((int32)c->type < 0 || c->type >= prog->nproc || (pack=prog->proc[c->type].pack) == nil)
return SunProcUnavail;
if((*pack)(a, ea, pa, c) < 0)
return SunGarbageArgs;
return SunSuccess;
}
SunStatus
suncallunpack(SunProg *prog, uchar *a, uchar *ea, uchar **pa, SunCall *c)
{
uchar *x;
int (*unpack)(uchar*, uchar*, uchar**, SunCall*);
if(pa == nil)
pa = &x;
if((int32)c->type < 0 || c->type >= prog->nproc || (unpack=prog->proc[c->type].unpack) == nil)
return SunProcUnavail;
if((*unpack)(a, ea, pa, c) < 0){
fprint(2, "%ud %d: '%.*H' unpack failed\n", prog->prog, c->type, (int)(ea-a), a);
return SunGarbageArgs;
}
return SunSuccess;
}
SunStatus
suncallunpackalloc(SunProg *prog, SunCallType type, uchar *a, uchar *ea, uchar **pa, SunCall **pc)
{
uchar *x;
uint size;
int (*unpack)(uchar*, uchar*, uchar**, SunCall*);
SunCall *c;
if(pa == nil)
pa = &x;
if((int32)type < 0 || type >= prog->nproc || (unpack=prog->proc[type].unpack) == nil)
return SunProcUnavail;
size = prog->proc[type].sizeoftype;
if(size == 0)
return SunProcUnavail;
c = mallocz(size, 1);
if(c == nil)
return SunSystemErr;
c->type = type;
if((*unpack)(a, ea, pa, c) < 0){
fprint(2, "in: %.*H unpack failed\n", (int)(ea-a), a);
free(c);
return SunGarbageArgs;
}
*pc = c;
return SunSuccess;
}
uint
suncallsize(SunProg *prog, SunCall *c)
{
uint (*size)(SunCall*);
if((int32)c->type < 0 || c->type >= prog->nproc || (size=prog->proc[c->type].size) == nil)
return ~0;
return (*size)(c);
}
|