minix/lib/libc/sys-minix/bind.c
Ben Gras 2fe8fb192f Full switch to clang/ELF. Drop ack. Simplify.
There is important information about booting non-ack images in
docs/UPDATING. ack/aout-format images can't be built any more, and
booting clang/ELF-format ones is a little different. Updating to the
new boot monitor is recommended.

Changes in this commit:

	. drop boot monitor -> allowing dropping ack support
	. facility to copy ELF boot files to /boot so that old boot monitor
	  can still boot fairly easily, see UPDATING
	. no more ack-format libraries -> single-case libraries
	. some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases
	. drop several ack toolchain commands, but not all support
	  commands (e.g. aal is gone but acksize is not yet).
	. a few libc files moved to netbsd libc dir
	. new /bin/date as minix date used code in libc/
	. test compile fix
	. harmonize includes
	. /usr/lib is no longer special: without ack, /usr/lib plays no
	  kind of special bootstrapping role any more and bootstrapping
	  is done exclusively through packages, so releases depend even
	  less on the state of the machine making them now.
	. rename nbsd_lib* to lib*
	. reduce mtree
2012-02-14 14:52:02 +01:00

217 lines
4.8 KiB
C

#include <sys/cdefs.h>
#include "namespace.h"
#ifdef __weak_alias
__weak_alias(bind, _bind)
#endif
#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);
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= ioctl(sock, NWIOGTCPCONF, &tcpconf);
if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
{
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 && errno != EBADIOCTL))
{
if (r == -1)
return r;
return _udp_bind(sock, address, address_len, &udpopt);
}
r= ioctl(sock, NWIOGUDSADDR, &uds_addr);
if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
{
if (r == -1)
return r;
return _uds_bind(sock, address, address_len, &uds_addr);
}
#if DEBUG
fprintf(stderr, "bind: not implemented for fd %d\n", sock);
#endif
errno= ENOSYS;
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;
}