source: trunk/minix/lib/ip/bind.c@ 16

Last change on this file since 16 was 9, checked in by Mattia Monga, 14 years ago

Minix 3.1.2a
File size: 3.5 KB
RevLine 
[9]1#include <errno.h>
2#include <stdio.h>
3#include <string.h>
4#include <sys/ioctl.h>
5#include <sys/socket.h>
6#include <netinet/in.h>
7
8#include <net/gen/in.h>
9#include <net/gen/tcp.h>
10#include <net/gen/tcp_io.h>
11#include <net/gen/udp.h>
12#include <net/gen/udp_io.h>
13
14#define DEBUG 0
15
16static int _tcp_bind(int socket, const struct sockaddr *address,
17 socklen_t address_len, nwio_tcpconf_t *tcpconfp);
18static int _udp_bind(int socket, const struct sockaddr *address,
19 socklen_t address_len, nwio_udpopt_t *udpoptp);
20
21int bind(int socket, const struct sockaddr *address, socklen_t address_len)
22{
23 int r;
24 nwio_tcpconf_t tcpconf;
25 nwio_udpopt_t udpopt;
26
27 r= ioctl(socket, NWIOGTCPCONF, &tcpconf);
28 if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
29 {
30 if (r == -1)
31 return r;
32 r= _tcp_bind(socket, address, address_len, &tcpconf);
33#if DEBUG
34 if (r == -1)
35 {
36 int t_errno= errno;
37 fprintf(stderr, "bind(tcp) failed: %s\n",
38 strerror(errno));
39 errno= t_errno;
40 }
41#endif
42 return r;
43 }
44
45 r= ioctl(socket, NWIOGUDPOPT, &udpopt);
46 if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
47 {
48 if (r == -1)
49 return r;
50 return _udp_bind(socket, address, address_len, &udpopt);
51 }
52
53#if DEBUG
54 fprintf(stderr, "bind: not implemented for fd %d\n", socket);
55#endif
56 errno= ENOSYS;
57 return -1;
58}
59
60static int _tcp_bind(int socket, const struct sockaddr *address,
61 socklen_t address_len, nwio_tcpconf_t *tcpconfp)
62{
63 int r;
64 nwio_tcpconf_t tcpconf;
65 struct sockaddr_in *sinp;
66
67 sinp= (struct sockaddr_in *)address;
68 if (sinp->sin_family != AF_INET || address_len != sizeof(*sinp))
69 {
70#if DEBUG
71 fprintf(stderr, "bind(tcp): sin_family = %d, len = %d\n",
72 sinp->sin_family, address_len);
73#endif
74 errno= EAFNOSUPPORT;
75 return -1;
76 }
77
78 if (sinp->sin_addr.s_addr != INADDR_ANY &&
79 sinp->sin_addr.s_addr != tcpconfp->nwtc_locaddr)
80 {
81 errno= EADDRNOTAVAIL;
82 return -1;
83 }
84
85 tcpconf.nwtc_flags= 0;
86
87 if (sinp->sin_port == 0)
88 tcpconf.nwtc_flags |= NWTC_LP_SEL;
89 else
90 {
91 tcpconf.nwtc_flags |= NWTC_LP_SET;
92 tcpconf.nwtc_locport= sinp->sin_port;
93 }
94
95 r= ioctl(socket, NWIOSTCPCONF, &tcpconf);
96 return r;
97}
98
99static int _udp_bind(int socket, const struct sockaddr *address,
100 socklen_t address_len, nwio_udpopt_t *udpoptp)
101{
102 int r;
103 unsigned long curr_flags;
104 nwio_udpopt_t udpopt;
105 struct sockaddr_in *sinp;
106
107 sinp= (struct sockaddr_in *)address;
108 if (sinp->sin_family != AF_INET || address_len != sizeof(*sinp))
109 {
110#if DEBUG
111 fprintf(stderr, "bind(udp): sin_family = %d, len = %d\n",
112 sinp->sin_family, address_len);
113#endif
114 errno= EAFNOSUPPORT;
115 return -1;
116 }
117
118 if (sinp->sin_addr.s_addr != INADDR_ANY &&
119 sinp->sin_addr.s_addr != udpoptp->nwuo_locaddr)
120 {
121 errno= EADDRNOTAVAIL;
122 return -1;
123 }
124
125 udpopt.nwuo_flags= 0;
126
127 if (sinp->sin_port == 0)
128 udpopt.nwuo_flags |= NWUO_LP_SEL;
129 else
130 {
131 udpopt.nwuo_flags |= NWUO_LP_SET;
132 udpopt.nwuo_locport= sinp->sin_port;
133 }
134
135 curr_flags= udpoptp->nwuo_flags;
136 if (!(curr_flags & NWUO_ACC_MASK))
137 udpopt.nwuo_flags |= NWUO_EXCL;
138 if (!(curr_flags & (NWUO_EN_LOC|NWUO_DI_LOC)))
139 udpopt.nwuo_flags |= NWUO_EN_LOC;
140 if (!(curr_flags & (NWUO_EN_BROAD|NWUO_DI_BROAD)))
141 udpopt.nwuo_flags |= NWUO_EN_BROAD;
142 if (!(curr_flags & (NWUO_RP_SET|NWUO_RP_ANY)))
143 udpopt.nwuo_flags |= NWUO_RP_ANY;
144 if (!(curr_flags & (NWUO_RA_SET|NWUO_RA_ANY)))
145 udpopt.nwuo_flags |= NWUO_RA_ANY;
146 if (!(curr_flags & (NWUO_RWDATONLY|NWUO_RWDATALL)))
147 udpopt.nwuo_flags |= NWUO_RWDATALL;
148 if (!(curr_flags & (NWUO_EN_IPOPT|NWUO_DI_IPOPT)))
149 udpopt.nwuo_flags |= NWUO_DI_IPOPT;
150
151 r= ioctl(socket, NWIOSUDPOPT, &udpopt);
152 return r;
153}
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