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Implement recvmmsg() and sendmmsg() system calls.

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This commit is contained in:
Dmitry Chagin 2015-05-24 18:04:04 +00:00
parent b7aaa9fdb0
commit e1ff74c0f7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=283488
8 changed files with 186 additions and 54 deletions
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2
sys/amd64/linux/linux_dummy.c
View File

@ -108,14 +108,12 @@ DUMMY(preadv);
DUMMY(pwritev);
DUMMY(rt_tsigqueueinfo);
DUMMY(perf_event_open);
DUMMY(recvmmsg);
DUMMY(fanotify_init);
DUMMY(fanotify_mark);
DUMMY(name_to_handle_at);
DUMMY(open_by_handle_at);
DUMMY(clock_adjtime);
DUMMY(syncfs);
DUMMY(sendmmsg);
DUMMY(setns);
DUMMY(process_vm_readv);
DUMMY(process_vm_writev);

8
sys/amd64/linux/syscalls.master
View File

@ -492,7 +492,9 @@
296 AUE_NULL STD { int linux_pwritev(void); }
297 AUE_NULL STD { int linux_rt_tsigqueueinfo(void); }
298 AUE_NULL STD { int linux_perf_event_open(void); }
299 AUE_NULL STD { int linux_recvmmsg(void); }
299 AUE_NULL STD { int linux_recvmmsg(l_int s, \
struct l_mmsghdr *msg, l_uint vlen, \
l_uint flags, struct l_timespec *timeout); }
300 AUE_NULL STD { int linux_fanotify_init(void); }
301 AUE_NULL STD { int linux_fanotify_mark(void); }
302 AUE_NULL STD { int linux_prlimit64(l_pid_t pid, l_uint resource, \
@ -501,7 +503,9 @@
304 AUE_NULL STD { int linux_open_by_handle_at(void); }
305 AUE_NULL STD { int linux_clock_adjtime(void); }
306 AUE_NULL STD { int linux_syncfs(void); }
307 AUE_NULL STD { int linux_sendmmsg(void); }
307 AUE_NULL STD { int linux_sendmmsg(l_int s, \
struct l_mmsghdr *msg, l_uint vlen, \
l_uint flags); }
308 AUE_NULL STD { int linux_setns(void); }
309 AUE_NULL STD { int linux_process_vm_readv(void); }
310 AUE_NULL STD { int linux_process_vm_writev(void); }

2
sys/amd64/linux32/linux32_dummy.c
View File

@ -118,7 +118,6 @@ DUMMY(pwritev);
DUMMY(rt_tsigqueueinfo);
DUMMY(perf_event_open);
/* linux 2.6.33: */
DUMMY(recvmmsg);
DUMMY(fanotify_init);
DUMMY(fanotify_mark);
/* later: */
@ -126,7 +125,6 @@ DUMMY(name_to_handle_at);
DUMMY(open_by_handle_at);
DUMMY(clock_adjtime);
DUMMY(syncfs);
DUMMY(sendmmsg);
DUMMY(setns);
DUMMY(process_vm_readv);
DUMMY(process_vm_writev);

8
sys/amd64/linux32/syscalls.master
View File

@ -559,7 +559,9 @@
335 AUE_NULL STD { int linux_rt_tsigqueueinfo(void); }
336 AUE_NULL STD { int linux_perf_event_open(void); }
; linux 2.6.33:
337 AUE_NULL STD { int linux_recvmmsg(void); }
337 AUE_NULL STD { int linux_recvmmsg(l_int s, \
struct l_mmsghdr *msg, l_uint vlen, \
l_uint flags, struct l_timespec *timeout); }
338 AUE_NULL STD { int linux_fanotify_init(void); }
339 AUE_NULL STD { int linux_fanotify_mark(void); }
; linux 2.6.36:
@ -572,7 +574,9 @@
342 AUE_NULL STD { int linux_open_by_handle_at(void); }
343 AUE_NULL STD { int linux_clock_adjtime(void); }
344 AUE_NULL STD { int linux_syncfs(void); }
345 AUE_NULL STD { int linux_sendmmsg(void); }
345 AUE_NULL STD { int linux_sendmmsg(l_int s, \
struct l_mmsghdr *msg, l_uint vlen, \
l_uint flags); }
346 AUE_NULL STD { int linux_setns(void); }
347 AUE_NULL STD { int linux_process_vm_readv(void); }
348 AUE_NULL STD { int linux_process_vm_writev(void); }

201
sys/compat/linux/linux_socket.c
View File

@ -72,9 +72,14 @@ __FBSDID("$FreeBSD$");
#endif
#include <compat/linux/linux_file.h>
#include <compat/linux/linux_socket.h>
#include <compat/linux/linux_timer.h>
#include <compat/linux/linux_util.h>
static int linux_to_bsd_domain(int);
static int linux_sendmsg_common(struct thread *, l_int, struct l_msghdr *,
l_uint);
static int linux_recvmsg_common(struct thread *, l_int, struct l_msghdr *,
l_uint, struct msghdr *);
/*
* Reads a linux sockaddr and does any necessary translation.
@ -1073,8 +1078,9 @@ linux_recvfrom(struct thread *td, struct linux_recvfrom_args *args)
return (error);
}
int
linux_sendmsg(struct thread *td, struct linux_sendmsg_args *args)
static int
linux_sendmsg_common(struct thread *td, l_int s, struct l_msghdr *msghdr,
l_uint flags)
{
struct cmsghdr *cmsg;
struct cmsgcred cmcred;
@ -1090,8 +1096,8 @@ linux_sendmsg(struct thread *td, struct linux_sendmsg_args *args)
void *data;
int error;
error = copyin(PTRIN(args->msg), &linux_msg, sizeof(linux_msg));
if (error)
error = copyin(msghdr, &linux_msg, sizeof(linux_msg));
if (error != 0)
return (error);
/*
@ -1105,7 +1111,7 @@ linux_sendmsg(struct thread *td, struct linux_sendmsg_args *args)
linux_msg.msg_control = PTROUT(NULL);
error = linux_to_bsd_msghdr(&msg, &linux_msg);
if (error)
if (error != 0)
return (error);
#ifdef COMPAT_LINUX32
@ -1114,21 +1120,21 @@ linux_sendmsg(struct thread *td, struct linux_sendmsg_args *args)
#else
error = copyiniov(msg.msg_iov, msg.msg_iovlen, &iov, EMSGSIZE);
#endif
if (error)
if (error != 0)
return (error);
control = NULL;
cmsg = NULL;
if ((ptr_cmsg = LINUX_CMSG_FIRSTHDR(&linux_msg)) != NULL) {
error = kern_getsockname(td, args->s, &sa, &datalen);
if (error)
error = kern_getsockname(td, s, &sa, &datalen);
if (error != 0)
goto bad;
sa_family = sa->sa_family;
free(sa, M_SONAME);
error = ENOBUFS;
cmsg = malloc(CMSG_HDRSZ, M_LINUX, M_WAITOK | M_ZERO);
cmsg = malloc(CMSG_HDRSZ, M_LINUX, M_WAITOK|M_ZERO);
control = m_get(M_WAITOK, MT_CONTROL);
if (control == NULL)
goto bad;
@ -1136,7 +1142,7 @@ linux_sendmsg(struct thread *td, struct linux_sendmsg_args *args)
do {
error = copyin(ptr_cmsg, &linux_cmsg,
sizeof(struct l_cmsghdr));
if (error)
if (error != 0)
goto bad;
error = EINVAL;
@ -1200,8 +1206,7 @@ linux_sendmsg(struct thread *td, struct linux_sendmsg_args *args)
msg.msg_iov = iov;
msg.msg_flags = 0;
error = linux_sendit(td, args->s, &msg, args->flags, control,
UIO_USERSPACE);
error = linux_sendit(td, s, &msg, flags, control, UIO_USERSPACE);
bad:
free(iov, M_IOV);
@ -1211,11 +1216,49 @@ linux_sendmsg(struct thread *td, struct linux_sendmsg_args *args)
}
int
linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args)
linux_sendmsg(struct thread *td, struct linux_sendmsg_args *args)
{
return (linux_sendmsg_common(td, args->s, PTRIN(args->msg),
args->flags));
}
int
linux_sendmmsg(struct thread *td, struct linux_sendmmsg_args *args)
{
struct l_mmsghdr *msg;
l_uint retval;
int error, datagrams;
if (args->vlen > UIO_MAXIOV)
args->vlen = UIO_MAXIOV;
msg = PTRIN(args->msg);
datagrams = 0;
while (datagrams < args->vlen) {
error = linux_sendmsg_common(td, args->s, &msg->msg_hdr,
args->flags);
if (error != 0)
break;
retval = td->td_retval[0];
error = copyout(&retval, &msg->msg_len, sizeof(msg->msg_len));
if (error != 0)
break;
++msg;
++datagrams;
}
if (error == 0)
td->td_retval[0] = datagrams;
return (error);
}
static int
linux_recvmsg_common(struct thread *td, l_int s, struct l_msghdr *msghdr,
l_uint flags, struct msghdr *msg)
{
struct cmsghdr *cm;
struct cmsgcred *cmcred;
struct msghdr msg;
struct l_cmsghdr *linux_cmsg = NULL;
struct l_ucred linux_ucred;
socklen_t datalen, outlen;
@ -1227,51 +1270,51 @@ linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args)
void *data;
int error, i, fd, fds, *fdp;
error = copyin(PTRIN(args->msg), &linux_msg, sizeof(linux_msg));
if (error)
error = copyin(msghdr, &linux_msg, sizeof(linux_msg));
if (error != 0)
return (error);
error = linux_to_bsd_msghdr(&msg, &linux_msg);
if (error)
error = linux_to_bsd_msghdr(msg, &linux_msg);
if (error != 0)
return (error);
#ifdef COMPAT_LINUX32
error = linux32_copyiniov(PTRIN(msg.msg_iov), msg.msg_iovlen,
error = linux32_copyiniov(PTRIN(msg->msg_iov), msg->msg_iovlen,
&iov, EMSGSIZE);
#else
error = copyiniov(msg.msg_iov, msg.msg_iovlen, &iov, EMSGSIZE);
error = copyiniov(msg->msg_iov, msg->msg_iovlen, &iov, EMSGSIZE);
#endif
if (error)
if (error != 0)
return (error);
if (msg.msg_name) {
error = linux_to_bsd_sockaddr((struct sockaddr *)msg.msg_name,
msg.msg_namelen);
if (error)
if (msg->msg_name) {
error = linux_to_bsd_sockaddr((struct sockaddr *)msg->msg_name,
msg->msg_namelen);
if (error != 0)
goto bad;
}
uiov = msg.msg_iov;
msg.msg_iov = iov;
controlp = (msg.msg_control != NULL) ? &control : NULL;
error = kern_recvit(td, args->s, &msg, UIO_USERSPACE, controlp);
msg.msg_iov = uiov;
if (error)
uiov = msg->msg_iov;
msg->msg_iov = iov;
controlp = (msg->msg_control != NULL) ? &control : NULL;
error = kern_recvit(td, s, msg, UIO_USERSPACE, controlp);
msg->msg_iov = uiov;
if (error != 0)
goto bad;
error = bsd_to_linux_msghdr(&msg, &linux_msg);
if (error)
error = bsd_to_linux_msghdr(msg, &linux_msg);
if (error != 0)
goto bad;
if (linux_msg.msg_name) {
error = bsd_to_linux_sockaddr((struct sockaddr *)
PTRIN(linux_msg.msg_name));
if (error)
if (error != 0)
goto bad;
}
if (linux_msg.msg_name && linux_msg.msg_namelen > 2) {
error = linux_sa_put(PTRIN(linux_msg.msg_name));
if (error)
if (error != 0)
goto bad;
}
@ -1281,10 +1324,10 @@ linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args)
if (control) {
linux_cmsg = malloc(L_CMSG_HDRSZ, M_LINUX, M_WAITOK | M_ZERO);
msg.msg_control = mtod(control, struct cmsghdr *);
msg.msg_controllen = control->m_len;
msg->msg_control = mtod(control, struct cmsghdr *);
msg->msg_controllen = control->m_len;
cm = CMSG_FIRSTHDR(&msg);
cm = CMSG_FIRSTHDR(msg);
while (cm != NULL) {
linux_cmsg->cmsg_type =
@ -1304,7 +1347,7 @@ linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args)
switch (cm->cmsg_type)
{
case SCM_RIGHTS:
if (args->flags & LINUX_MSG_CMSG_CLOEXEC) {
if (flags & LINUX_MSG_CMSG_CLOEXEC) {
fds = datalen / sizeof(int);
fdp = data;
for (i = 0; i < fds; i++) {
@ -1361,13 +1404,13 @@ linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args)
outbuf += LINUX_CMSG_ALIGN(datalen);
outlen += LINUX_CMSG_LEN(datalen);
cm = CMSG_NXTHDR(&msg, cm);
cm = CMSG_NXTHDR(msg, cm);
}
}
out:
linux_msg.msg_controllen = outlen;
error = copyout(&linux_msg, PTRIN(args->msg), sizeof(linux_msg));
error = copyout(&linux_msg, msghdr, sizeof(linux_msg));
bad:
free(iov, M_IOV);
@ -1377,6 +1420,75 @@ linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args)
return (error);
}
int
linux_recvmsg(struct thread *td, struct linux_recvmsg_args *args)
{
struct msghdr bsd_msg;
return (linux_recvmsg_common(td, args->s, PTRIN(args->msg),
args->flags, &bsd_msg));
}
int
linux_recvmmsg(struct thread *td, struct linux_recvmmsg_args *args)
{
struct l_mmsghdr *msg;
struct msghdr bsd_msg;
struct l_timespec lts;
struct timespec ts, tts;
l_uint retval;
int error, datagrams;
if (args->timeout) {
error = copyin(args->timeout, &lts, sizeof(struct l_timespec));
if (error != 0)
return (error);
error = linux_to_native_timespec(&ts, &lts);
if (error != 0)
return (error);
getnanotime(&tts);
timespecadd(&tts, &ts);
}
msg = PTRIN(args->msg);
datagrams = 0;
while (datagrams < args->vlen) {
error = linux_recvmsg_common(td, args->s, &msg->msg_hdr,
args->flags & ~LINUX_MSG_WAITFORONE, &bsd_msg);
if (error != 0)
break;
retval = td->td_retval[0];
error = copyout(&retval, &msg->msg_len, sizeof(msg->msg_len));
if (error != 0)
break;
++msg;
++datagrams;
/*
* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet.
*/
if (args->flags & LINUX_MSG_WAITFORONE)
args->flags |= LINUX_MSG_DONTWAIT;
/*
* See BUGS section of recvmmsg(2).
*/
if (args->timeout) {
getnanotime(&ts);
timespecsub(&ts, &tts);
if (!timespecisset(&ts) || ts.tv_sec > 0)
break;
}
/* Out of band data, return right away. */
if (bsd_msg.msg_flags & MSG_OOB)
break;
}
if (error == 0)
td->td_retval[0] = datagrams;
return (error);
}
int
linux_shutdown(struct thread *td, struct linux_shutdown_args *args)
{
@ -1555,7 +1667,8 @@ static const unsigned char lxs_args[] = {
LINUX_AL(6) /* recvfrom */, LINUX_AL(2) /* shutdown */,
LINUX_AL(5) /* setsockopt */, LINUX_AL(5) /* getsockopt */,
LINUX_AL(3) /* sendmsg */, LINUX_AL(3) /* recvmsg */,
LINUX_AL(4) /* accept4 */
LINUX_AL(4) /* accept4 */, LINUX_AL(5) /* recvmmsg */,
LINUX_AL(4) /* sendmmsg */
};
#define LINUX_AL_SIZE sizeof(lxs_args) / sizeof(lxs_args[0]) - 1
@ -1611,6 +1724,10 @@ linux_socketcall(struct thread *td, struct linux_socketcall_args *args)
return (linux_recvmsg(td, arg));
case LINUX_ACCEPT4:
return (linux_accept4(td, arg));
case LINUX_RECVMMSG:
return (linux_recvmmsg(td, arg));
case LINUX_SENDMMSG:
return (linux_sendmmsg(td, arg));
}
uprintf("LINUX: 'socket' typ=%d not implemented\n", args->what);

9
sys/compat/linux/linux_socket.h
View File

@ -48,6 +48,7 @@
#define LINUX_MSG_RST 0x1000
#define LINUX_MSG_ERRQUEUE 0x2000
#define LINUX_MSG_NOSIGNAL 0x4000
#define LINUX_MSG_WAITFORONE 0x10000
#define LINUX_MSG_CMSG_CLOEXEC 0x40000000
/* Socket-level control message types */
@ -65,6 +66,12 @@ struct l_msghdr {
l_uint msg_flags;
};
struct l_mmsghdr {
struct l_msghdr msg_hdr;
l_uint msg_len;
};
struct l_cmsghdr {
l_size_t cmsg_len;
l_int cmsg_level;
@ -279,6 +286,8 @@ int linux_getsockopt(struct thread *td, struct linux_getsockopt_args *args);
#define LINUX_SENDMSG 16
#define LINUX_RECVMSG 17
#define LINUX_ACCEPT4 18
#define LINUX_RECVMMSG 19
#define LINUX_SENDMMSG 20
/* Socket options */
#define LINUX_IP_TOS 1

2
sys/i386/linux/linux_dummy.c
View File

@ -114,7 +114,6 @@ DUMMY(pwritev);
DUMMY(rt_tsigqueueinfo);
DUMMY(perf_event_open);
/* linux 2.6.33: */
DUMMY(recvmmsg);
DUMMY(fanotify_init);
DUMMY(fanotify_mark);
/* later: */
@ -122,7 +121,6 @@ DUMMY(name_to_handle_at);
DUMMY(open_by_handle_at);
DUMMY(clock_adjtime);
DUMMY(syncfs);
DUMMY(sendmmsg);
DUMMY(setns);
DUMMY(process_vm_readv);
DUMMY(process_vm_writev);

8
sys/i386/linux/syscalls.master
View File

@ -567,7 +567,9 @@
335 AUE_NULL STD { int linux_rt_tsigqueueinfo(void); }
336 AUE_NULL STD { int linux_perf_event_open(void); }
; linux 2.6.33:
337 AUE_NULL STD { int linux_recvmmsg(void); }
337 AUE_NULL STD { int linux_recvmmsg(l_int s, \
struct l_mmsghdr *msg, l_uint vlen, \
l_uint flags, struct l_timespec *timeout); }
338 AUE_NULL STD { int linux_fanotify_init(void); }
339 AUE_NULL STD { int linux_fanotify_mark(void); }
; linux 2.6.36:
@ -580,7 +582,9 @@
342 AUE_NULL STD { int linux_open_by_handle_at(void); }
343 AUE_NULL STD { int linux_clock_adjtime(void); }
344 AUE_NULL STD { int linux_syncfs(void); }
345 AUE_NULL STD { int linux_sendmmsg(void); }
345 AUE_NULL STD { int linux_sendmmsg(l_int s, \
struct l_mmsghdr *msg, l_uint vlen, \
l_uint flags); }
346 AUE_NULL STD { int linux_setns(void); }
347 AUE_NULL STD { int linux_process_vm_readv(void); }
348 AUE_NULL STD { int linux_process_vm_writev(void); }