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#include <sys/cdefs.h>
#include "namespace.h"
#include <lib.h>
#include <unistd.h>
#include <stdint.h>
#include <stdlib.h>
#include <limits.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <net/gen/in.h>
#include <net/gen/tcp.h>
#include <net/gen/tcp_io.h>
#include <net/gen/udp.h>
#include <net/gen/udp_io.h>
#include <sys/un.h>
#include <minix/config.h>
#include <minix/const.h>
#define DEBUG 0
static int _tcp_bind(int sock, const struct sockaddr *address,
socklen_t address_len, nwio_tcpconf_t *tcpconfp);
static int _udp_bind(int sock, const struct sockaddr *address,
socklen_t address_len, nwio_udpopt_t *udpoptp);
static int _uds_bind(int sock, const struct sockaddr *address,
socklen_t address_len, struct sockaddr_un *uds_addr);
/*
* Bind a socket to a local address.
*/
static int
__bind(int fd, const struct sockaddr * address, socklen_t address_len)
{
message m;
memset(&m, 0, sizeof(m));
m.m_lc_vfs_sockaddr.fd = fd;
m.m_lc_vfs_sockaddr.addr = (vir_bytes)address;
m.m_lc_vfs_sockaddr.addr_len = address_len;
return _syscall(VFS_PROC_NR, VFS_BIND, &m);
}
int bind(int sock, const struct sockaddr *address, socklen_t address_len)
{
int r;
nwio_tcpconf_t tcpconf;
nwio_udpopt_t udpopt;
struct sockaddr_un uds_addr;
r = __bind(sock, address, address_len);
if (r != -1 || (errno != ENOTSOCK && errno != ENOSYS))
return r;
r= ioctl(sock, NWIOGTCPCONF, &tcpconf);
if (r != -1 || errno != ENOTTY)
{
if (r == -1)
return r;
r= _tcp_bind(sock, address, address_len, &tcpconf);
#if DEBUG
if (r == -1)
{
int t_errno= errno;
fprintf(stderr, "bind(tcp) failed: %s\n",
strerror(errno));
errno= t_errno;
}
#endif
return r;
}
r= ioctl(sock, NWIOGUDPOPT, &udpopt);
if (r != -1 || errno != ENOTTY)
{
if (r == -1)
return r;
return _udp_bind(sock, address, address_len, &udpopt);
}
r= ioctl(sock, NWIOGUDSADDR, &uds_addr);
if (r != -1 || errno != ENOTTY)
{
if (r == -1)
return r;
return _uds_bind(sock, address, address_len, &uds_addr);
}
errno = ENOTSOCK;
return -1;
}
static int _tcp_bind(int sock, const struct sockaddr *address,
socklen_t address_len, nwio_tcpconf_t *tcpconfp)
{
int r;
nwio_tcpconf_t tcpconf;
struct sockaddr_in *sinp;
sinp= (struct sockaddr_in *) __UNCONST(address);
if (sinp->sin_family != AF_INET || address_len < sizeof(*sinp))
{
#if DEBUG
fprintf(stderr, "bind(tcp): sin_family = %d, len = %d\n",
sinp->sin_family, address_len);
#endif
errno= EAFNOSUPPORT;
return -1;
}
if (sinp->sin_addr.s_addr != INADDR_ANY &&
sinp->sin_addr.s_addr != tcpconfp->nwtc_locaddr)
{
errno= EADDRNOTAVAIL;
return -1;
}
tcpconf.nwtc_flags= 0;
if (sinp->sin_port == 0)
tcpconf.nwtc_flags |= NWTC_LP_SEL;
else
{
tcpconf.nwtc_flags |= NWTC_LP_SET;
tcpconf.nwtc_locport= sinp->sin_port;
}
r= ioctl(sock, NWIOSTCPCONF, &tcpconf);
return r;
}
static int _udp_bind(int sock, const struct sockaddr *address,
socklen_t address_len, nwio_udpopt_t *udpoptp)
{
int r;
unsigned long curr_flags;
nwio_udpopt_t udpopt;
struct sockaddr_in *sinp;
sinp= (struct sockaddr_in *) __UNCONST(address);
if (sinp->sin_family != AF_INET || address_len < sizeof(*sinp))
{
#if DEBUG
fprintf(stderr, "bind(udp): sin_family = %d, len = %d\n",
sinp->sin_family, address_len);
#endif
errno= EAFNOSUPPORT;
return -1;
}
if (sinp->sin_addr.s_addr != INADDR_ANY &&
sinp->sin_addr.s_addr != udpoptp->nwuo_locaddr)
{
errno= EADDRNOTAVAIL;
return -1;
}
udpopt.nwuo_flags= 0;
if (sinp->sin_port == 0)
udpopt.nwuo_flags |= NWUO_LP_SEL;
else
{
udpopt.nwuo_flags |= NWUO_LP_SET;
udpopt.nwuo_locport= sinp->sin_port;
}
curr_flags= udpoptp->nwuo_flags;
if (!(curr_flags & NWUO_ACC_MASK))
udpopt.nwuo_flags |= NWUO_EXCL;
if (!(curr_flags & (NWUO_EN_LOC|NWUO_DI_LOC)))
udpopt.nwuo_flags |= NWUO_EN_LOC;
if (!(curr_flags & (NWUO_EN_BROAD|NWUO_DI_BROAD)))
udpopt.nwuo_flags |= NWUO_EN_BROAD;
if (!(curr_flags & (NWUO_RP_SET|NWUO_RP_ANY)))
udpopt.nwuo_flags |= NWUO_RP_ANY;
if (!(curr_flags & (NWUO_RA_SET|NWUO_RA_ANY)))
udpopt.nwuo_flags |= NWUO_RA_ANY;
if (!(curr_flags & (NWUO_RWDATONLY|NWUO_RWDATALL)))
udpopt.nwuo_flags |= NWUO_RWDATALL;
if (!(curr_flags & (NWUO_EN_IPOPT|NWUO_DI_IPOPT)))
udpopt.nwuo_flags |= NWUO_DI_IPOPT;
r= ioctl(sock, NWIOSUDPOPT, &udpopt);
return r;
}
static int _uds_bind(int sock, const struct sockaddr *address,
socklen_t address_len, struct sockaddr_un *uds_addr)
{
int r;
int did_mknod;
if (address == NULL) {
errno = EFAULT;
return -1;
}
did_mknod = 0;
r = mknod(((struct sockaddr_un *) __UNCONST(address))->sun_path,
S_IFSOCK|S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH, 0);
if (r == -1 && errno != EEXIST) {
return -1;
} else if (r == 0) {
did_mknod = 1;
}
/* perform the bind */
r= ioctl(sock, NWIOSUDSADDR, (void *) __UNCONST(address));
if (r == -1 && did_mknod) {
/* bind() failed in pfs, so we roll back the
* file system change
*/
unlink(((struct sockaddr_un *) __UNCONST(address))->sun_path);
}
return r;
}
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