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Add the last remaining system calls: send() and recv().

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There is still one TODO item for these calls: add file descriptor
passing. The data structures are already prepared for this. It's just
the translation that's missing.

Obtained from:	http://github.com/NuxiNL/freebsd
This commit is contained in:
Ed Schouten 2015-08-12 17:42:20 +00:00
parent beacf789e5
commit fbb624e76f
1 changed files with 100 additions and 4 deletions
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104
sys/compat/cloudabi64/cloudabi64_sock.c
View File

@ -26,23 +26,119 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/socket.h>
#include <sys/syscallsubr.h>
#include <sys/systm.h>
#include <sys/uio.h>
#include <compat/cloudabi/cloudabi_util.h>
#include <compat/cloudabi64/cloudabi64_syscalldefs.h>
#include <compat/cloudabi64/cloudabi64_proto.h>
static MALLOC_DEFINE(M_SOCKET, "socket", "CloudABI socket");
int
cloudabi64_sys_sock_recv(struct thread *td,
struct cloudabi64_sys_sock_recv_args *uap)
{
struct sockaddr_storage ss;
cloudabi64_recv_in_t ri;
cloudabi64_recv_out_t ro = {};
cloudabi64_iovec_t iovobj;
struct msghdr msghdr = {};
size_t i;
int error;
/* Not implemented. */
return (ENOSYS);
error = copyin(uap->in, &ri, sizeof(ri));
if (error != 0)
return (error);
/* Convert results in cloudabi_recv_in_t to struct msghdr. */
if (ri.ri_datalen > UIO_MAXIOV)
return (EINVAL);
msghdr.msg_iovlen = ri.ri_datalen;
msghdr.msg_iov = malloc(msghdr.msg_iovlen * sizeof(struct iovec),
M_SOCKET, M_WAITOK);
for (i = 0; i < msghdr.msg_iovlen; i++) {
error = copyin(&((cloudabi64_iovec_t *)ri.ri_data)[i], &iovobj,
sizeof(iovobj));
if (error != 0) {
free(msghdr.msg_iov, M_SOCKET);
return (error);
}
msghdr.msg_iov[i].iov_base = (void *)iovobj.iov_base;
msghdr.msg_iov[i].iov_len = iovobj.iov_len;
}
msghdr.msg_name = &ss;
msghdr.msg_namelen = sizeof(ss);
if (ri.ri_flags & CLOUDABI_MSG_PEEK)
msghdr.msg_flags |= MSG_PEEK;
if (ri.ri_flags & CLOUDABI_MSG_WAITALL)
msghdr.msg_flags |= MSG_WAITALL;
/* TODO(ed): Add file descriptor passing. */
error = kern_recvit(td, uap->s, &msghdr, UIO_SYSSPACE, NULL);
free(msghdr.msg_iov, M_SOCKET);
if (error != 0)
return (error);
/* Convert results in msghdr to cloudabi_recv_out_t. */
ro.ro_datalen = td->td_retval[0];
cloudabi_convert_sockaddr((struct sockaddr *)&ss,
MIN(msghdr.msg_namelen, sizeof(ss)), &ro.ro_peername);
td->td_retval[0] = 0;
return (copyout(&ro, uap->out, sizeof(ro)));
}
int
cloudabi64_sys_sock_send(struct thread *td,
struct cloudabi64_sys_sock_send_args *uap)
{
cloudabi64_send_in_t si;
cloudabi64_send_out_t so = {};
cloudabi64_ciovec_t iovobj;
struct msghdr msghdr = {};
size_t i;
int error, flags;
/* Not implemented. */
return (ENOSYS);
error = copyin(uap->in, &si, sizeof(si));
if (error != 0)
return (error);
/* Convert results in cloudabi_send_in_t to struct msghdr. */
if (si.si_datalen > UIO_MAXIOV)
return (EINVAL);
msghdr.msg_iovlen = si.si_datalen;
msghdr.msg_iov = malloc(msghdr.msg_iovlen * sizeof(struct iovec),
M_SOCKET, M_WAITOK);
for (i = 0; i < msghdr.msg_iovlen; i++) {
error = copyin(&((cloudabi64_ciovec_t *)si.si_data)[i], &iovobj,
sizeof(iovobj));
if (error != 0) {
free(msghdr.msg_iov, M_SOCKET);
return (error);
}
msghdr.msg_iov[i].iov_base = (void *)iovobj.iov_base;
msghdr.msg_iov[i].iov_len = iovobj.iov_len;
}
flags = MSG_NOSIGNAL;
if (si.si_flags & CLOUDABI_MSG_EOR)
flags |= MSG_EOR;
/* TODO(ed): Add file descriptor passing. */
error = kern_sendit(td, uap->s, &msghdr, flags, NULL, UIO_USERSPACE);
free(msghdr.msg_iov, M_SOCKET);
if (error != 0)
return (error);
/* Convert results in msghdr to cloudabi_send_out_t. */
so.so_datalen = td->td_retval[0];
td->td_retval[0] = 0;
return (copyout(&so, uap->out, sizeof(so)));
}