More QEMU fixes
Ulrich Weigand
weigand at immd1.informatik.uni-erlangen.de
Sat Mar 29 10:09:50 CST 2003
Hello Fabrice,
I've played a bit with your qemu-0.1.2 release, and got putty running
under Wine under qemu on s390-ibm-linux (using a wineserver also
running under qemu on s390).
To make this work I've had to add a bunch of missing byteorder
conversions and other fixes, which I've appended here.
Mostly, the changes concern the socket area; wine and wineserver
extensively use sockets (sendmsg/recvmsg with ancillary data),
and also the X connection needed fixes (setsockopt). There were
also some other fixes required (poll, select, execve). I haven't
found any problem with the actual CPU emulation, however!
Here's the detailed list of changes:
glibc-2.3.2 compile fix:
Recent glibc supports nanosecond resolution file timestamps
in their struct stat, using this construct
struct timespec st_atim; /* Time of last access. */
struct timespec st_mtim; /* Time of last modification. */
struct timespec st_ctim; /* Time of last status change. */
# define st_atime st_atim.tv_sec /* Backward compatibility. */
# define st_mtime st_mtim.tv_sec
# define st_ctime st_ctim.tv_sec
This breaks the use of st_atime etc. as struct members; I've renamed
them to target_st_atime etc.
Missing data conversion:
- socketcall on-stack arguments need to be byteswapped
- struct sockaddr (sa_family) needs to be byteswapped
- sendmsg/recvmsg ancillary data needs to be converted
- execve arg and env vectors need to be byteswapped
- select fdset conversion wasn't done due to typo in #if
- added marginal support for setsockopt
Incorrect data conversion:
- poll pollfd array was clobbered (even on native)
If you like, I could also send you the patch to make qemu actually work
on s390; I'm not sure if you are interested in that at this point ...
Bye,
Ulrich
diff -ur qemu-0.1.2/syscall-i386.h qemu-0.1.2-s390/syscall-i386.h
--- qemu-0.1.2/syscall-i386.h 2003-03-26 23:34:59.000000000 +0100
+++ qemu-0.1.2-s390/syscall-i386.h 2003-03-29 02:33:28.000000000 +0100
@@ -255,11 +255,11 @@
target_ulong st_size;
target_ulong st_blksize;
target_ulong st_blocks;
- target_ulong st_atime;
+ target_ulong target_st_atime;
target_ulong __unused1;
- target_ulong st_mtime;
+ target_ulong target_st_mtime;
target_ulong __unused2;
- target_ulong st_ctime;
+ target_ulong target_st_ctime;
target_ulong __unused3;
target_ulong __unused4;
target_ulong __unused5;
@@ -290,13 +290,13 @@
target_ulong st_blocks; /* Number 512-byte blocks allocated. */
target_ulong __pad4; /* future possible st_blocks high bits */
- target_ulong st_atime;
+ target_ulong target_st_atime;
target_ulong __pad5;
- target_ulong st_mtime;
+ target_ulong target_st_mtime;
target_ulong __pad6;
- target_ulong st_ctime;
+ target_ulong target_st_ctime;
target_ulong __pad7; /* will be high 32 bits of ctime someday */
unsigned long long st_ino;
diff -ur qemu-0.1.2/syscall.c qemu-0.1.2-s390/syscall.c
--- qemu-0.1.2/syscall.c 2003-03-26 23:34:59.000000000 +0100
+++ qemu-0.1.2-s390/syscall.c 2003-03-29 04:45:12.000000000 +0100
@@ -26,6 +26,7 @@
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
+#include <time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/time.h>
@@ -40,6 +41,7 @@
#include <sys/uio.h>
#include <sys/poll.h>
//#include <sys/user.h>
+#include <netinet/tcp.h>
#define termios host_termios
#define winsize host_winsize
@@ -166,7 +168,7 @@
static inline fd_set *target_to_host_fds(fd_set *fds,
target_long *target_fds, int n)
{
-#if !defined(BSWP_NEEDED) && !defined(WORD_BIGENDIAN)
+#if !defined(BSWP_NEEDED) && !defined(WORDS_BIGENDIAN)
return (fd_set *)target_fds;
#else
int i, b;
@@ -188,7 +190,7 @@
static inline void host_to_target_fds(target_long *target_fds,
fd_set *fds, int n)
{
-#if !defined(BSWP_NEEDED) && !defined(WORD_BIGENDIAN)
+#if !defined(BSWP_NEEDED) && !defined(WORDS_BIGENDIAN)
/* nothing to do */
#else
int i, nw, j, k;
@@ -256,55 +258,267 @@
return ret;
}
-static long do_socketcall(int num, long *vptr)
+static inline void target_to_host_sockaddr(struct sockaddr *addr,
+ struct target_sockaddr *target_addr,
+ socklen_t len)
+{
+ memcpy(addr, target_addr, len);
+ addr->sa_family = tswap16(target_addr->sa_family);
+}
+
+static inline void host_to_target_sockaddr(struct target_sockaddr *target_addr,
+ struct sockaddr *addr,
+ socklen_t len)
+{
+ memcpy(target_addr, addr, len);
+ target_addr->sa_family = tswap16(addr->sa_family);
+}
+
+static inline void target_to_host_cmsg(struct msghdr *msgh,
+ struct target_msghdr *target_msgh)
+{
+ struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
+ struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
+ socklen_t space = 0;
+
+ while (cmsg && target_cmsg) {
+ void *data = CMSG_DATA(cmsg);
+ void *target_data = TARGET_CMSG_DATA(target_cmsg);
+
+ int len = tswapl(target_cmsg->cmsg_len)
+ - TARGET_CMSG_ALIGN(sizeof (struct target_cmsghdr));
+
+ space += CMSG_SPACE(len);
+ if (space > msgh->msg_controllen) {
+ space -= CMSG_SPACE(len);
+ gemu_log("Host cmsg overflow");
+ break;
+ }
+
+ cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
+ cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
+ cmsg->cmsg_len = CMSG_LEN(len);
+
+ if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
+ gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
+ memcpy(data, target_data, len);
+ } else {
+ int *fd = (int *)data;
+ int *target_fd = (int *)target_data;
+ int i, numfds = len / sizeof(int);
+
+ for (i = 0; i < numfds; i++)
+ fd[i] = tswap32(target_fd[i]);
+ }
+
+ cmsg = CMSG_NXTHDR(msgh, cmsg);
+ target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
+ }
+
+ msgh->msg_controllen = space;
+}
+
+static inline void host_to_target_cmsg(struct target_msghdr *target_msgh,
+ struct msghdr *msgh)
+{
+ struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
+ struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
+ socklen_t space = 0;
+
+ while (cmsg && target_cmsg) {
+ void *data = CMSG_DATA(cmsg);
+ void *target_data = TARGET_CMSG_DATA(target_cmsg);
+
+ int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr));
+
+ space += TARGET_CMSG_SPACE(len);
+ if (space > tswapl(target_msgh->msg_controllen)) {
+ space -= TARGET_CMSG_SPACE(len);
+ gemu_log("Target cmsg overflow");
+ break;
+ }
+
+ target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
+ target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
+ target_cmsg->cmsg_len = tswapl(TARGET_CMSG_LEN(len));
+
+ if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
+ gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
+ memcpy(target_data, data, len);
+ } else {
+ int *fd = (int *)data;
+ int *target_fd = (int *)target_data;
+ int i, numfds = len / sizeof(int);
+
+ for (i = 0; i < numfds; i++)
+ target_fd[i] = tswap32(fd[i]);
+ }
+
+ cmsg = CMSG_NXTHDR(msgh, cmsg);
+ target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
+ }
+
+ msgh->msg_controllen = tswapl(space);
+}
+
+static long do_setsockopt(int sockfd, int level, int optname,
+ void *optval, socklen_t optlen)
+{
+ if (level == SOL_TCP) {
+ /* TCP options all take an 'int' value. */
+ int val;
+
+ if (optlen < sizeof(uint32_t))
+ return -EINVAL;
+
+ val = tswap32(*(uint32_t *)optval);
+ return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
+ }
+
+ else if (level != SOL_SOCKET) {
+ gemu_log("Unsupported setsockopt level: %d\n", level);
+ return -ENOSYS;
+ }
+
+ switch (optname) {
+ /* Options with 'int' argument. */
+ case SO_DEBUG:
+ case SO_REUSEADDR:
+ case SO_TYPE:
+ case SO_ERROR:
+ case SO_DONTROUTE:
+ case SO_BROADCAST:
+ case SO_SNDBUF:
+ case SO_RCVBUF:
+ case SO_KEEPALIVE:
+ case SO_OOBINLINE:
+ case SO_NO_CHECK:
+ case SO_PRIORITY:
+ case SO_BSDCOMPAT:
+ case SO_PASSCRED:
+ case SO_TIMESTAMP:
+ case SO_RCVLOWAT:
+ case SO_RCVTIMEO:
+ case SO_SNDTIMEO:
+ {
+ int val;
+ if (optlen < sizeof(uint32_t))
+ return -EINVAL;
+ val = tswap32(*(uint32_t *)optval);
+ return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
+ }
+
+ default:
+ gemu_log("Unsupported setsockopt SOL_SOCKET option: %d\n", optname);
+ return -ENOSYS;
+ }
+}
+
+static long do_getsockopt(int sockfd, int level, int optname,
+ void *optval, socklen_t *optlen)
+{
+ gemu_log("getsockopt not yet supported\n");
+ return -ENOSYS;
+}
+
+static long do_socketcall(int num, int32_t *vptr)
{
long ret;
switch(num) {
case SOCKOP_socket:
- ret = get_errno(socket(vptr[0], vptr[1], vptr[2]));
+ {
+ int domain = tswap32(vptr[0]);
+ int type = tswap32(vptr[1]);
+ int protocol = tswap32(vptr[2]);
+
+ ret = get_errno(socket(domain, type, protocol));
+ }
break;
case SOCKOP_bind:
- ret = get_errno(bind(vptr[0], (struct sockaddr *)vptr[1], vptr[2]));
+ {
+ int sockfd = tswap32(vptr[0]);
+ void *target_addr = (void *)tswap32(vptr[1]);
+ socklen_t addrlen = tswap32(vptr[2]);
+ void *addr = alloca(addrlen);
+
+ target_to_host_sockaddr(addr, target_addr, addrlen);
+ ret = get_errno(bind(sockfd, addr, addrlen));
+ }
break;
case SOCKOP_connect:
- ret = get_errno(connect(vptr[0], (struct sockaddr *)vptr[1], vptr[2]));
+ {
+ int sockfd = tswap32(vptr[0]);
+ void *target_addr = (void *)tswap32(vptr[1]);
+ socklen_t addrlen = tswap32(vptr[2]);
+ void *addr = alloca(addrlen);
+
+ target_to_host_sockaddr(addr, target_addr, addrlen);
+ ret = get_errno(connect(sockfd, addr, addrlen));
+ }
break;
case SOCKOP_listen:
- ret = get_errno(listen(vptr[0], vptr[1]));
+ {
+ int sockfd = tswap32(vptr[0]);
+ int backlog = tswap32(vptr[1]);
+
+ ret = get_errno(listen(sockfd, backlog));
+ }
break;
case SOCKOP_accept:
{
- socklen_t size;
- size = tswap32(*(int32_t *)vptr[2]);
- ret = get_errno(accept(vptr[0], (struct sockaddr *)vptr[1], &size));
- if (!is_error(ret))
- *(int32_t *)vptr[2] = size;
+ int sockfd = tswap32(vptr[0]);
+ void *target_addr = (void *)tswap32(vptr[1]);
+ uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
+ socklen_t addrlen = tswap32(*target_addrlen);
+ void *addr = alloca(addrlen);
+
+ ret = get_errno(accept(sockfd, addr, &addrlen));
+ if (!is_error(ret)) {
+ host_to_target_sockaddr(target_addr, addr, addrlen);
+ *target_addrlen = tswap32(addrlen);
+ }
}
break;
case SOCKOP_getsockname:
{
- socklen_t size;
- size = tswap32(*(int32_t *)vptr[2]);
- ret = get_errno(getsockname(vptr[0], (struct sockaddr *)vptr[1], &size));
- if (!is_error(ret))
- *(int32_t *)vptr[2] = size;
+ int sockfd = tswap32(vptr[0]);
+ void *target_addr = (void *)tswap32(vptr[1]);
+ uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
+ socklen_t addrlen = tswap32(*target_addrlen);
+ void *addr = alloca(addrlen);
+
+ ret = get_errno(getsockname(sockfd, addr, &addrlen));
+ if (!is_error(ret)) {
+ host_to_target_sockaddr(target_addr, addr, addrlen);
+ *target_addrlen = tswap32(addrlen);
+ }
}
break;
case SOCKOP_getpeername:
{
- socklen_t size;
- size = tswap32(*(int32_t *)vptr[2]);
- ret = get_errno(getpeername(vptr[0], (struct sockaddr *)vptr[1], &size));
- if (!is_error(ret))
- *(int32_t *)vptr[2] = size;
+ int sockfd = tswap32(vptr[0]);
+ void *target_addr = (void *)tswap32(vptr[1]);
+ uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
+ socklen_t addrlen = tswap32(*target_addrlen);
+ void *addr = alloca(addrlen);
+
+ ret = get_errno(getpeername(sockfd, addr, &addrlen));
+ if (!is_error(ret)) {
+ host_to_target_sockaddr(target_addr, addr, addrlen);
+ *target_addrlen = tswap32(addrlen);
+ }
}
break;
case SOCKOP_socketpair:
{
+ int domain = tswap32(vptr[0]);
+ int type = tswap32(vptr[1]);
+ int protocol = tswap32(vptr[2]);
+ int32_t *target_tab = (void *)tswap32(vptr[3]);
int tab[2];
- int32_t *target_tab = (int32_t *)vptr[3];
- ret = get_errno(socketpair(vptr[0], vptr[1], vptr[2], tab));
+
+ ret = get_errno(socketpair(domain, type, protocol, tab));
if (!is_error(ret)) {
target_tab[0] = tswap32(tab[0]);
target_tab[1] = tswap32(tab[1]);
@@ -312,27 +526,64 @@
}
break;
case SOCKOP_send:
- ret = get_errno(send(vptr[0], (void *)vptr[1], vptr[2], vptr[3]));
+ {
+ int sockfd = tswap32(vptr[0]);
+ void *msg = (void *)tswap32(vptr[1]);
+ size_t len = tswap32(vptr[2]);
+ int flags = tswap32(vptr[3]);
+
+ ret = get_errno(send(sockfd, msg, len, flags));
+ }
break;
case SOCKOP_recv:
- ret = get_errno(recv(vptr[0], (void *)vptr[1], vptr[2], vptr[3]));
+ {
+ int sockfd = tswap32(vptr[0]);
+ void *msg = (void *)tswap32(vptr[1]);
+ size_t len = tswap32(vptr[2]);
+ int flags = tswap32(vptr[3]);
+
+ ret = get_errno(recv(sockfd, msg, len, flags));
+ }
break;
case SOCKOP_sendto:
- ret = get_errno(sendto(vptr[0], (void *)vptr[1], vptr[2], vptr[3],
- (struct sockaddr *)vptr[4], vptr[5]));
+ {
+ int sockfd = tswap32(vptr[0]);
+ void *msg = (void *)tswap32(vptr[1]);
+ size_t len = tswap32(vptr[2]);
+ int flags = tswap32(vptr[3]);
+ void *target_addr = (void *)tswap32(vptr[4]);
+ socklen_t addrlen = tswap32(vptr[5]);
+ void *addr = alloca(addrlen);
+
+ target_to_host_sockaddr(addr, target_addr, addrlen);
+ ret = get_errno(sendto(sockfd, msg, len, flags, addr, addrlen));
+ }
break;
case SOCKOP_recvfrom:
{
- socklen_t size;
- size = tswap32(*(int32_t *)vptr[5]);
- ret = get_errno(recvfrom(vptr[0], (void *)vptr[1], vptr[2],
- vptr[3], (struct sockaddr *)vptr[4], &size));
- if (!is_error(ret))
- *(int32_t *)vptr[5] = size;
+ int sockfd = tswap32(vptr[0]);
+ void *msg = (void *)tswap32(vptr[1]);
+ size_t len = tswap32(vptr[2]);
+ int flags = tswap32(vptr[3]);
+ void *target_addr = (void *)tswap32(vptr[4]);
+ uint32_t *target_addrlen = (void *)tswap32(vptr[5]);
+ socklen_t addrlen = tswap32(*target_addrlen);
+ void *addr = alloca(addrlen);
+
+ ret = get_errno(recvfrom(sockfd, msg, len, flags, addr, &addrlen));
+ if (!is_error(ret)) {
+ host_to_target_sockaddr(target_addr, addr, addrlen);
+ *target_addrlen = tswap32(addrlen);
+ }
}
break;
case SOCKOP_shutdown:
- ret = get_errno(shutdown(vptr[0], vptr[1]));
+ {
+ int sockfd = tswap32(vptr[0]);
+ int how = tswap32(vptr[1]);
+
+ ret = get_errno(shutdown(sockfd, how));
+ }
break;
case SOCKOP_sendmsg:
case SOCKOP_recvmsg:
@@ -344,11 +595,11 @@
struct iovec *vec;
struct target_iovec *target_vec;
- msgp = (void *)vptr[1];
+ msgp = (void *)tswap32(vptr[1]);
msg.msg_name = (void *)tswapl(msgp->msg_name);
msg.msg_namelen = tswapl(msgp->msg_namelen);
- msg.msg_control = (void *)tswapl(msgp->msg_control);
- msg.msg_controllen = tswapl(msgp->msg_controllen);
+ msg.msg_controllen = 2 * tswapl(msgp->msg_controllen);
+ msg.msg_control = alloca(msg.msg_controllen);
msg.msg_flags = tswap32(msgp->msg_flags);
count = tswapl(msgp->msg_iovlen);
@@ -361,17 +612,43 @@
msg.msg_iovlen = count;
msg.msg_iov = vec;
- fd = vptr[0];
- flags = vptr[2];
- if (num == SOCKOP_sendmsg)
- ret = sendmsg(fd, &msg, flags);
- else
- ret = recvmsg(fd, &msg, flags);
- ret = get_errno(ret);
+ fd = tswap32(vptr[0]);
+ flags = tswap32(vptr[2]);
+ if (num == SOCKOP_sendmsg) {
+ target_to_host_cmsg(&msg, msgp);
+ ret = get_errno(sendmsg(fd, &msg, flags));
+ } else {
+ ret = get_errno(recvmsg(fd, &msg, flags));
+ if (!is_error(ret))
+ host_to_target_cmsg(msgp, &msg);
+ }
}
break;
case SOCKOP_setsockopt:
+ {
+ int sockfd = tswap32(vptr[0]);
+ int level = tswap32(vptr[1]);
+ int optname = tswap32(vptr[2]);
+ void *optval = (void *)tswap32(vptr[3]);
+ socklen_t optlen = tswap32(vptr[4]);
+
+ ret = do_setsockopt(sockfd, level, optname, optval, optlen);
+ }
+ break;
case SOCKOP_getsockopt:
+ {
+ int sockfd = tswap32(vptr[0]);
+ int level = tswap32(vptr[1]);
+ int optname = tswap32(vptr[2]);
+ void *optval = (void *)tswap32(vptr[3]);
+ uint32_t *target_len = (void *)tswap32(vptr[4]);
+ socklen_t optlen = tswap32(*target_len);
+
+ ret = do_getsockopt(sockfd, level, optname, optval, &optlen);
+ if (!is_error(ret))
+ *target_len = tswap32(optlen);
+ }
+ break;
default:
gemu_log("Unsupported socketcall: %d\n", num);
ret = -ENOSYS;
@@ -880,7 +1157,27 @@
ret = get_errno(unlink((const char *)arg1));
break;
case TARGET_NR_execve:
- ret = get_errno(execve((const char *)arg1, (void *)arg2, (void *)arg3));
+ {
+ char **argp, **envp;
+ int argc = 0, envc = 0;
+ uint32_t *p;
+ char **q;
+
+ for (p = (void *)arg2; *p; p++)
+ argc++;
+ for (p = (void *)arg3; *p; p++)
+ envc++;
+
+ argp = alloca(argc * sizeof(void *));
+ envp = alloca(envc * sizeof(void *));
+
+ for (p = (void *)arg2, q = argp; *p; p++, q++)
+ *q = (void *)tswap32(*p);
+ for (p = (void *)arg3, q = envp; *p; p++, q++)
+ *q = (void *)tswap32(*p);
+
+ ret = get_errno(execve((const char *)arg1, argp, envp));
+ }
break;
case TARGET_NR_chdir:
ret = get_errno(chdir((const char *)arg1));
@@ -1404,7 +1701,7 @@
case TARGET_NR_ioperm:
goto unimplemented;
case TARGET_NR_socketcall:
- ret = do_socketcall(arg1, (long *)arg2);
+ ret = do_socketcall(arg1, (int32_t *)arg2);
break;
case TARGET_NR_syslog:
goto unimplemented;
@@ -1468,9 +1765,9 @@
target_st->st_size = tswapl(st.st_size);
target_st->st_blksize = tswapl(st.st_blksize);
target_st->st_blocks = tswapl(st.st_blocks);
- target_st->st_atime = tswapl(st.st_atime);
- target_st->st_mtime = tswapl(st.st_mtime);
- target_st->st_ctime = tswapl(st.st_ctime);
+ target_st->target_st_atime = tswapl(st.st_atime);
+ target_st->target_st_mtime = tswapl(st.st_mtime);
+ target_st->target_st_ctime = tswapl(st.st_ctime);
}
}
break;
@@ -1644,17 +1941,17 @@
unsigned int nfds = arg2;
int timeout = arg3;
struct pollfd *pfd;
- int i;
+ unsigned int i;
pfd = alloca(sizeof(struct pollfd) * nfds);
for(i = 0; i < nfds; i++) {
- pfd->fd = tswap32(target_pfd->fd);
- pfd->events = tswap16(target_pfd->events);
+ pfd[i].fd = tswap32(target_pfd[i].fd);
+ pfd[i].events = tswap16(target_pfd[i].events);
}
ret = get_errno(poll(pfd, nfds, timeout));
if (!is_error(ret)) {
for(i = 0; i < nfds; i++) {
- target_pfd->revents = tswap16(pfd->revents);
+ target_pfd[i].revents = tswap16(pfd[i].revents);
}
}
}
@@ -1859,9 +2156,9 @@
target_st->st_size = tswapl(st.st_size);
target_st->st_blksize = tswapl(st.st_blksize);
target_st->st_blocks = tswapl(st.st_blocks);
- target_st->st_atime = tswapl(st.st_atime);
- target_st->st_mtime = tswapl(st.st_mtime);
- target_st->st_ctime = tswapl(st.st_ctime);
+ target_st->target_st_atime = tswapl(st.st_atime);
+ target_st->target_st_mtime = tswapl(st.st_mtime);
+ target_st->target_st_ctime = tswapl(st.st_ctime);
}
}
break;
diff -ur qemu-0.1.2/syscall_defs.h qemu-0.1.2-s390/syscall_defs.h
--- qemu-0.1.2/syscall_defs.h 2003-03-26 23:34:59.000000000 +0100
+++ qemu-0.1.2-s390/syscall_defs.h 2003-03-29 02:36:30.000000000 +0100
@@ -19,6 +19,11 @@
#define SOCKOP_sendmsg 16
#define SOCKOP_recvmsg 17
+struct target_sockaddr {
+ uint16_t sa_family;
+ uint8_t sa_data[14];
+};
+
struct target_timeval {
target_long tv_sec;
target_long tv_usec;
@@ -49,6 +54,43 @@
unsigned int msg_flags;
};
+struct target_cmsghdr {
+ target_long cmsg_len;
+ int cmsg_level;
+ int cmsg_type;
+};
+
+#define TARGET_CMSG_DATA(cmsg) ((unsigned char *) ((struct target_cmsghdr *) (cmsg) + 1))
+#define TARGET_CMSG_NXTHDR(mhdr, cmsg) __target_cmsg_nxthdr (mhdr, cmsg)
+#define TARGET_CMSG_FIRSTHDR(mhdr) \
+ ((size_t) tswapl((mhdr)->msg_controllen) >= sizeof (struct target_cmsghdr) \
+ ? (struct target_cmsghdr *) tswapl((mhdr)->msg_control) : (struct target_cmsghdr *) NULL)
+#define TARGET_CMSG_ALIGN(len) (((len) + sizeof (target_long) - 1) \
+ & (size_t) ~(sizeof (target_long) - 1))
+#define TARGET_CMSG_SPACE(len) (TARGET_CMSG_ALIGN (len) \
+ + TARGET_CMSG_ALIGN (sizeof (struct target_cmsghdr)))
+#define TARGET_CMSG_LEN(len) (TARGET_CMSG_ALIGN (sizeof (struct target_cmsghdr)) + (len))
+
+static __inline__ struct target_cmsghdr *
+__target_cmsg_nxthdr (struct target_msghdr *__mhdr, struct target_cmsghdr *__cmsg)
+{
+ if (tswapl(__cmsg->cmsg_len) < sizeof (struct target_cmsghdr))
+ /* The kernel header does this so there may be a reason. */
+ return 0;
+
+ __cmsg = (struct target_cmsghdr *) ((unsigned char *) __cmsg
+ + TARGET_CMSG_ALIGN (tswapl(__cmsg->cmsg_len)));
+ if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) tswapl(__mhdr->msg_control)
+ + tswapl(__mhdr->msg_controllen))
+ || ((unsigned char *) __cmsg + TARGET_CMSG_ALIGN (tswapl(__cmsg->cmsg_len))
+ > ((unsigned char *) tswapl(__mhdr->msg_control)
+ + tswapl(__mhdr->msg_controllen))))
+ /* No more entries. */
+ return 0;
+ return __cmsg;
+}
+
+
struct target_rusage {
struct target_timeval ru_utime; /* user time used */
struct target_timeval ru_stime; /* system time used */
--
Dr. Ulrich Weigand
weigand at informatik.uni-erlangen.de
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