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OpenBSD support.

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This commit is contained in:
rsc 2005-05-01 18:40:01 +00:00
parent cea10000c5
commit 52e6164443
7 changed files with 35 additions and 33 deletions
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48
src/lib9/sendfd.c
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@ -6,21 +6,16 @@
#include <unistd.h>
#include <errno.h>
typedef struct Sendfd Sendfd;
struct Sendfd {
struct cmsghdr cmsg;
int fd;
};
int
sendfd(int s, int fd)
{
char buf[1];
struct iovec iov;
struct msghdr msg;
struct cmsghdr *cmsg;
int n;
Sendfd sfd;
char cms[CMSG_SPACE(sizeof(int))];
buf[0] = 0;
iov.iov_base = buf;
iov.iov_len = 1;
@ -28,14 +23,14 @@ sendfd(int s, int fd)
memset(&msg, 0, sizeof msg);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_control = (caddr_t)cms;
msg.msg_controllen = CMSG_LEN(sizeof(int));
sfd.cmsg.cmsg_len = sizeof sfd;
sfd.cmsg.cmsg_level = SOL_SOCKET;
sfd.cmsg.cmsg_type = SCM_RIGHTS;
sfd.fd = fd;
msg.msg_control = (caddr_t)&sfd;
msg.msg_controllen = sizeof sfd;
cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_len = CMSG_LEN(sizeof(int));
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
*(int*)CMSG_DATA(cmsg) = fd;
if((n=sendmsg(s, &msg, 0)) != iov.iov_len)
return -1;
@ -46,10 +41,12 @@ int
recvfd(int s)
{
int n;
int fd;
char buf[1];
struct iovec iov;
struct msghdr msg;
Sendfd sfd;
struct cmsghdr *cmsg;
char cms[CMSG_SPACE(sizeof(int))];
iov.iov_base = buf;
iov.iov_len = 1;
@ -60,20 +57,13 @@ recvfd(int s)
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
memset(&sfd, 0, sizeof sfd);
sfd.fd = -1;
sfd.cmsg.cmsg_len = sizeof sfd;
sfd.cmsg.cmsg_level = SOL_SOCKET;
sfd.cmsg.cmsg_type = SCM_RIGHTS;
msg.msg_control = (caddr_t)&sfd;
msg.msg_controllen = sizeof sfd;
msg.msg_control = (caddr_t)cms;
msg.msg_controllen = sizeof cms;
if((n=recvmsg(s, &msg, 0)) < 0)
return -1;
if(n==0 && sfd.fd==-1){
werrstr("eof in recvfd");
return -1;
}
return sfd.fd;
cmsg = CMSG_FIRSTHDR(&msg);
fd = *(int*)CMSG_DATA(cmsg);
return fd;
}