1 #include "std.h"
2 #include "dat.h"
3 
4 static Ioproc *cache[5];
5 static int ncache;
6 
7 static Ioproc*
8 xioproc(void)
9 {
10 	Ioproc *c;
11 	int i;
12 	
13 	for(i=0; i<ncache; i++){
14 		if(c = cache[i]){
15 			cache[i] = nil;
16 			return c;
17 		}
18 	}
19 
20 	return ioproc();
21 }
22 
23 static void
24 closexioproc(Ioproc *io)
25 {
26 	int i;
27 
28 	for(i=0; i<ncache; i++)
29 		if(cache[i] == nil){
30 			cache[i] = io;
31 			return;
32 		}
33 
34 	closeioproc(io);
35 }
36 
37 int
38 xiodial(char *ds, char *local, char *dir, int *cfdp)
39 {
40 	int fd;
41 	Ioproc *io;
42 
43 	if((io = xioproc()) == nil)
44 		return -1;
45 	fd = iodial(io, ds, local, dir, cfdp);
46 	closexioproc(io);
47 	return fd;
48 }
49 
50 void
51 xioclose(int fd)
52 {
53 	Ioproc *io;
54 
55 	if((io = xioproc()) == nil){
56 		close(fd);
57 		return;
58 	}
59 
60 	ioclose(io, fd);
61 	closexioproc(io);
62 }
63 
64 int
65 xiowrite(int fd, void *v, int n)
66 {
67 	int m;
68 	Ioproc *io;
69 
70 	if((io = xioproc()) == nil)
71 		return -1;
72 	m = iowrite(io, fd, v, n);
73 	closexioproc(io);
74 	if(m != n)
75 		return -1;
76 	return n;
77 }
78 
79 static long
80 _ioauthdial(va_list *arg)
81 {
82 	char *net;
83 	char *dom;
84 	int fd;
85 
86 	net = va_arg(*arg, char*);
87 	dom = va_arg(*arg, char*);
88 	fd = _authdial(net, dom);
89 	if(fd < 0)
90 		fprint(2, "authdial: %r");
91 	return fd;
92 }
93 
94 int
95 xioauthdial(char *net, char *dom)
96 {
97 	int fd;
98 	Ioproc *io;
99 
100 	if((io = xioproc()) == nil)
101 		return -1;
102 	fd = iocall(io, _ioauthdial, net, dom);
103 	closexioproc(io);
104 	return fd;
105 }
106 
107 static long
108 _ioasrdresp(va_list *arg)
109 {
110 	int fd;
111 	void *a;
112 	int n;
113 
114 	fd = va_arg(*arg, int);
115 	a = va_arg(*arg, void*);
116 	n = va_arg(*arg, int);
117 
118 	return _asrdresp(fd, a, n);
119 }
120 
121 int
122 xioasrdresp(int fd, void *a, int n)
123 {
124 	Ioproc *io;
125 
126 	if((io = xioproc()) == nil)
127 		return -1;
128 
129 	n = iocall(io, _ioasrdresp, fd, a, n);
130 	closexioproc(io);
131 	return n;
132 }
133 
134 static long
135 _ioasgetticket(va_list *arg)
136 {
137 	int asfd;
138 	char *trbuf;
139 	char *tbuf;
140 
141 	asfd = va_arg(*arg, int);
142 	trbuf = va_arg(*arg, char*);
143 	tbuf = va_arg(*arg, char*);
144 
145 	return _asgetticket(asfd, trbuf, tbuf);
146 }
147 
148 int
149 xioasgetticket(int fd, char *trbuf, char *tbuf)
150 {
151 	int n;
152 	Ioproc *io;
153 
154 	if((io = xioproc()) == nil)
155 		return -1;
156 
157 	n = iocall(io, _ioasgetticket, fd, trbuf, tbuf);
158 	closexioproc(io);
159 	if(n != 2*TICKETLEN)
160 		n = -1;
161 	else
162 		n = 0;
163 	return n;
164 }
165