#include <sys/statfs.h>
#include <utime.h>
#include <sys/sysinfo.h>
+#include <sys/signalfd.h>
//#include <sys/user.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
return -ENOSYS;
}
#endif
-#ifdef __NR_getdents
+#if defined(TARGET_NR_getdents) && defined(__NR_getdents)
_syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count);
#endif
#if !defined(__NR_getdents) || \
{ 0, 0, 0, 0 }
};
+typedef abi_long (*TargetFdDataFunc)(void *, size_t);
+typedef abi_long (*TargetFdAddrFunc)(void *, abi_ulong, socklen_t);
+typedef struct TargetFdTrans {
+ TargetFdDataFunc host_to_target_data;
+ TargetFdDataFunc target_to_host_data;
+ TargetFdAddrFunc target_to_host_addr;
+} TargetFdTrans;
+
+static TargetFdTrans **target_fd_trans;
+
+static unsigned int target_fd_max;
+
+static TargetFdDataFunc fd_trans_host_to_target_data(int fd)
+{
+ if (fd >= 0 && fd < target_fd_max && target_fd_trans[fd]) {
+ return target_fd_trans[fd]->host_to_target_data;
+ }
+ return NULL;
+}
+
+static TargetFdAddrFunc fd_trans_target_to_host_addr(int fd)
+{
+ if (fd >= 0 && fd < target_fd_max && target_fd_trans[fd]) {
+ return target_fd_trans[fd]->target_to_host_addr;
+ }
+ return NULL;
+}
+
+static void fd_trans_register(int fd, TargetFdTrans *trans)
+{
+ unsigned int oldmax;
+
+ if (fd >= target_fd_max) {
+ oldmax = target_fd_max;
+ target_fd_max = ((fd >> 6) + 1) << 6; /* by slice of 64 entries */
+ target_fd_trans = g_realloc(target_fd_trans,
+ target_fd_max * sizeof(TargetFdTrans));
+ memset((void *)(target_fd_trans + oldmax), 0,
+ (target_fd_max - oldmax) * sizeof(TargetFdTrans *));
+ }
+ target_fd_trans[fd] = trans;
+}
+
+static void fd_trans_unregister(int fd)
+{
+ if (fd >= 0 && fd < target_fd_max) {
+ target_fd_trans[fd] = NULL;
+ }
+}
+
+static void fd_trans_dup(int oldfd, int newfd)
+{
+ fd_trans_unregister(newfd);
+ if (oldfd < target_fd_max && target_fd_trans[oldfd]) {
+ fd_trans_register(newfd, target_fd_trans[oldfd]);
+ }
+}
+
static int sys_getcwd1(char *buf, size_t size)
{
if (getcwd(buf, size) == NULL) {
* minus the errnos that are not actually generic to all archs.
*/
static uint16_t host_to_target_errno_table[ERRNO_TABLE_SIZE] = {
+ [EAGAIN] = TARGET_EAGAIN,
[EIDRM] = TARGET_EIDRM,
[ECHRNG] = TARGET_ECHRNG,
[EL2NSYNC] = TARGET_EL2NSYNC,
return 0;
}
-static inline abi_long target_to_host_sockaddr(struct sockaddr *addr,
+static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr,
abi_ulong target_addr,
socklen_t len)
{
sa_family_t sa_family;
struct target_sockaddr *target_saddr;
+ if (fd_trans_target_to_host_addr(fd)) {
+ return fd_trans_target_to_host_addr(fd)(addr, target_addr, len);
+ }
+
target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
if (!target_saddr)
return -TARGET_EFAULT;
struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
abi_long msg_controllen;
abi_ulong target_cmsg_addr;
- struct target_cmsghdr *target_cmsg;
+ struct target_cmsghdr *target_cmsg, *target_cmsg_start;
socklen_t space = 0;
msg_controllen = tswapal(target_msgh->msg_controllen);
goto the_end;
target_cmsg_addr = tswapal(target_msgh->msg_control);
target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1);
+ target_cmsg_start = target_cmsg;
if (!target_cmsg)
return -TARGET_EFAULT;
space += CMSG_SPACE(len);
if (space > msgh->msg_controllen) {
space -= CMSG_SPACE(len);
+ /* This is a QEMU bug, since we allocated the payload
+ * area ourselves (unlike overflow in host-to-target
+ * conversion, which is just the guest giving us a buffer
+ * that's too small). It can't happen for the payload types
+ * we currently support; if it becomes an issue in future
+ * we would need to improve our allocation strategy to
+ * something more intelligent than "twice the size of the
+ * target buffer we're reading from".
+ */
gemu_log("Host cmsg overflow\n");
break;
}
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 {
+ if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
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]);
+ for (i = 0; i < numfds; i++) {
+ __get_user(fd[i], target_fd + i);
+ }
+ } else if (cmsg->cmsg_level == SOL_SOCKET
+ && cmsg->cmsg_type == SCM_CREDENTIALS) {
+ struct ucred *cred = (struct ucred *)data;
+ struct target_ucred *target_cred =
+ (struct target_ucred *)target_data;
+
+ __get_user(cred->pid, &target_cred->pid);
+ __get_user(cred->uid, &target_cred->uid);
+ __get_user(cred->gid, &target_cred->gid);
+ } else {
+ gemu_log("Unsupported ancillary data: %d/%d\n",
+ cmsg->cmsg_level, cmsg->cmsg_type);
+ memcpy(data, target_data, len);
}
cmsg = CMSG_NXTHDR(msgh, cmsg);
- target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
+ target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
+ target_cmsg_start);
}
unlock_user(target_cmsg, target_cmsg_addr, 0);
the_end:
struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
abi_long msg_controllen;
abi_ulong target_cmsg_addr;
- struct target_cmsghdr *target_cmsg;
+ struct target_cmsghdr *target_cmsg, *target_cmsg_start;
socklen_t space = 0;
msg_controllen = tswapal(target_msgh->msg_controllen);
goto the_end;
target_cmsg_addr = tswapal(target_msgh->msg_control);
target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0);
+ target_cmsg_start = target_cmsg;
if (!target_cmsg)
return -TARGET_EFAULT;
void *target_data = TARGET_CMSG_DATA(target_cmsg);
int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr));
+ int tgt_len, tgt_space;
- space += TARGET_CMSG_SPACE(len);
- if (space > msg_controllen) {
- space -= TARGET_CMSG_SPACE(len);
- gemu_log("Target cmsg overflow\n");
+ /* We never copy a half-header but may copy half-data;
+ * this is Linux's behaviour in put_cmsg(). Note that
+ * truncation here is a guest problem (which we report
+ * to the guest via the CTRUNC bit), unlike truncation
+ * in target_to_host_cmsg, which is a QEMU bug.
+ */
+ if (msg_controllen < sizeof(struct cmsghdr)) {
+ target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
break;
}
target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
}
target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
- target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(len));
+ tgt_len = TARGET_CMSG_LEN(len);
+
+ /* Payload types which need a different size of payload on
+ * the target must adjust tgt_len here.
+ */
+ switch (cmsg->cmsg_level) {
+ case SOL_SOCKET:
+ switch (cmsg->cmsg_type) {
+ case SO_TIMESTAMP:
+ tgt_len = sizeof(struct target_timeval);
+ break;
+ default:
+ break;
+ }
+ default:
+ break;
+ }
+
+ if (msg_controllen < tgt_len) {
+ target_msgh->msg_flags |= tswap32(MSG_CTRUNC);
+ tgt_len = msg_controllen;
+ }
+
+ /* We must now copy-and-convert len bytes of payload
+ * into tgt_len bytes of destination space. Bear in mind
+ * that in both source and destination we may be dealing
+ * with a truncated value!
+ */
switch (cmsg->cmsg_level) {
case SOL_SOCKET:
switch (cmsg->cmsg_type) {
{
int *fd = (int *)data;
int *target_fd = (int *)target_data;
- int i, numfds = len / sizeof(int);
+ int i, numfds = tgt_len / sizeof(int);
- for (i = 0; i < numfds; i++)
- target_fd[i] = tswap32(fd[i]);
+ for (i = 0; i < numfds; i++) {
+ __put_user(fd[i], target_fd + i);
+ }
break;
}
case SO_TIMESTAMP:
struct target_timeval *target_tv =
(struct target_timeval *)target_data;
- if (len != sizeof(struct timeval))
+ if (len != sizeof(struct timeval) ||
+ tgt_len != sizeof(struct target_timeval)) {
goto unimplemented;
+ }
/* copy struct timeval to target */
- target_tv->tv_sec = tswapal(tv->tv_sec);
- target_tv->tv_usec = tswapal(tv->tv_usec);
+ __put_user(tv->tv_sec, &target_tv->tv_sec);
+ __put_user(tv->tv_usec, &target_tv->tv_usec);
break;
}
case SCM_CREDENTIALS:
unimplemented:
gemu_log("Unsupported ancillary data: %d/%d\n",
cmsg->cmsg_level, cmsg->cmsg_type);
- memcpy(target_data, data, len);
+ memcpy(target_data, data, MIN(len, tgt_len));
+ if (tgt_len > len) {
+ memset(target_data + len, 0, tgt_len - len);
+ }
}
+ target_cmsg->cmsg_len = tswapal(tgt_len);
+ tgt_space = TARGET_CMSG_SPACE(len);
+ if (msg_controllen < tgt_space) {
+ tgt_space = msg_controllen;
+ }
+ msg_controllen -= tgt_space;
+ space += tgt_space;
cmsg = CMSG_NXTHDR(msgh, cmsg);
- target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
+ target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg,
+ target_cmsg_start);
}
unlock_user(target_cmsg, target_cmsg_addr, space);
the_end:
}
fprog.len = tswap16(tfprog->len);
- filter = malloc(fprog.len * sizeof(*filter));
+ filter = g_try_new(struct sock_filter, fprog.len);
if (filter == NULL) {
unlock_user_struct(tfilter, tfprog->filter, 1);
unlock_user_struct(tfprog, optval_addr, 1);
ret = get_errno(setsockopt(sockfd, SOL_SOCKET,
SO_ATTACH_FILTER, &fprog, sizeof(fprog)));
- free(filter);
+ g_free(filter);
unlock_user_struct(tfilter, tfprog->filter, 1);
unlock_user_struct(tfprog, optval_addr, 1);
addr_ifname = alloca(IFNAMSIZ);
memcpy(addr_ifname, dev_ifname, optlen);
addr_ifname[optlen] = 0;
- ret = get_errno(setsockopt(sockfd, level, optname, addr_ifname, optlen));
+ ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
+ addr_ifname, optlen));
unlock_user (dev_ifname, optval_addr, 0);
return ret;
}
return NULL;
}
- vec = calloc(count, sizeof(struct iovec));
+ vec = g_try_new0(struct iovec, count);
if (vec == NULL) {
errno = ENOMEM;
return NULL;
return vec;
fail:
+ while (--i >= 0) {
+ if (tswapal(target_vec[i].iov_len) > 0) {
+ unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0);
+ }
+ }
unlock_user(target_vec, target_addr, 0);
fail2:
- free(vec);
+ g_free(vec);
errno = err;
return NULL;
}
if (target_vec) {
for (i = 0; i < count; i++) {
abi_ulong base = tswapal(target_vec[i].iov_base);
- abi_long len = tswapal(target_vec[i].iov_base);
+ abi_long len = tswapal(target_vec[i].iov_len);
if (len < 0) {
break;
}
unlock_user(target_vec, target_addr, 0);
}
- free(vec);
+ g_free(vec);
}
static inline int target_to_host_sock_type(int *type)
return fd;
}
+static abi_long packet_target_to_host_sockaddr(void *host_addr,
+ abi_ulong target_addr,
+ socklen_t len)
+{
+ struct sockaddr *addr = host_addr;
+ struct target_sockaddr *target_saddr;
+
+ target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
+ if (!target_saddr) {
+ return -TARGET_EFAULT;
+ }
+
+ memcpy(addr, target_saddr, len);
+ addr->sa_family = tswap16(target_saddr->sa_family);
+ /* spkt_protocol is big-endian */
+
+ unlock_user(target_saddr, target_addr, 0);
+ return 0;
+}
+
+static TargetFdTrans target_packet_trans = {
+ .target_to_host_addr = packet_target_to_host_sockaddr,
+};
+
/* do_socket() Must return target values and target errnos. */
static abi_long do_socket(int domain, int type, int protocol)
{
if (domain == PF_NETLINK)
return -TARGET_EAFNOSUPPORT;
+
+ if (domain == AF_PACKET ||
+ (domain == AF_INET && type == SOCK_PACKET)) {
+ protocol = tswap16(protocol);
+ }
+
ret = get_errno(socket(domain, type, protocol));
if (ret >= 0) {
ret = sock_flags_fixup(ret, target_type);
+ if (type == SOCK_PACKET) {
+ /* Manage an obsolete case :
+ * if socket type is SOCK_PACKET, bind by name
+ */
+ fd_trans_register(ret, &target_packet_trans);
+ }
}
return ret;
}
addr = alloca(addrlen+1);
- ret = target_to_host_sockaddr(addr, target_addr, addrlen);
+ ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
if (ret)
return ret;
addr = alloca(addrlen+1);
- ret = target_to_host_sockaddr(addr, target_addr, addrlen);
+ ret = target_to_host_sockaddr(sockfd, addr, target_addr, addrlen);
if (ret)
return ret;
if (msgp->msg_name) {
msg.msg_namelen = tswap32(msgp->msg_namelen);
msg.msg_name = alloca(msg.msg_namelen+1);
- ret = target_to_host_sockaddr(msg.msg_name, tswapal(msgp->msg_name),
- msg.msg_namelen);
+ ret = target_to_host_sockaddr(fd, msg.msg_name,
+ tswapal(msgp->msg_name),
+ msg.msg_namelen);
if (ret) {
goto out2;
}
return ret;
}
-#ifdef TARGET_NR_sendmmsg
/* We don't rely on the C library to have sendmmsg/recvmmsg support,
* so it might not have this *mmsg-specific flag either.
*/
}
return ret;
}
-#endif
/* If we don't have a system accept4() then just call accept.
* The callsites to do_accept4() will ensure that they don't
return -TARGET_EFAULT;
if (target_addr) {
addr = alloca(addrlen+1);
- ret = target_to_host_sockaddr(addr, target_addr, addrlen);
+ ret = target_to_host_sockaddr(fd, addr, target_addr, addrlen);
if (ret) {
unlock_user(host_msg, msg, 0);
return ret;
[SOCKOP_shutdown] = 2, /* sockfd, how */
[SOCKOP_sendmsg] = 3, /* sockfd, msg, flags */
[SOCKOP_recvmsg] = 3, /* sockfd, msg, flags */
+ [SOCKOP_sendmmsg] = 4, /* sockfd, msgvec, vlen, flags */
+ [SOCKOP_recvmmsg] = 4, /* sockfd, msgvec, vlen, flags */
[SOCKOP_setsockopt] = 5, /* sockfd, level, optname, optval, optlen */
[SOCKOP_getsockopt] = 5, /* sockfd, level, optname, optval, optlen */
};
return do_sendrecvmsg(a[0], a[1], a[2], 1);
case SOCKOP_recvmsg: /* sockfd, msg, flags */
return do_sendrecvmsg(a[0], a[1], a[2], 0);
+ case SOCKOP_sendmmsg: /* sockfd, msgvec, vlen, flags */
+ return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 1);
+ case SOCKOP_recvmmsg: /* sockfd, msgvec, vlen, flags */
+ return do_sendrecvmmsg(a[0], a[1], a[2], a[3], 0);
case SOCKOP_setsockopt: /* sockfd, level, optname, optval, optlen */
return do_setsockopt(a[0], a[1], a[2], a[3], a[4]);
case SOCKOP_getsockopt: /* sockfd, level, optname, optval, optlen */
nsems = semid_ds.sem_nsems;
- *host_array = malloc(nsems*sizeof(unsigned short));
+ *host_array = g_try_new(unsigned short, nsems);
if (!*host_array) {
return -TARGET_ENOMEM;
}
array = lock_user(VERIFY_READ, target_addr,
nsems*sizeof(unsigned short), 1);
if (!array) {
- free(*host_array);
+ g_free(*host_array);
return -TARGET_EFAULT;
}
for(i=0; i<nsems; i++) {
__put_user((*host_array)[i], &array[i]);
}
- free(*host_array);
+ g_free(*host_array);
unlock_user(array, target_addr, 1);
return 0;
}
static inline abi_long do_semctl(int semid, int semnum, int cmd,
- union target_semun target_su)
+ abi_ulong target_arg)
{
+ union target_semun target_su = { .buf = target_arg };
union semun arg;
struct semid_ds dsarg;
unsigned short *array = NULL;
if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0))
return -TARGET_EFAULT;
- host_mb = malloc(msgsz+sizeof(long));
+ host_mb = g_try_malloc(msgsz + sizeof(long));
if (!host_mb) {
unlock_user_struct(target_mb, msgp, 0);
return -TARGET_ENOMEM;
host_mb->mtype = (abi_long) tswapal(target_mb->mtype);
memcpy(host_mb->mtext, target_mb->mtext, msgsz);
ret = get_errno(msgsnd(msqid, host_mb, msgsz, msgflg));
- free(host_mb);
+ g_free(host_mb);
unlock_user_struct(target_mb, msgp, 0);
return ret;
* ptr argument. */
abi_ulong atptr;
get_user_ual(atptr, ptr);
- ret = do_semctl(first, second, third,
- (union target_semun) atptr);
+ ret = do_semctl(first, second, third, atptr);
break;
}
#define STRUCT_SPECIAL(name) STRUCT_ ## name,
enum {
#include "syscall_types.h"
+STRUCT_MAX
};
#undef STRUCT
#undef STRUCT_SPECIAL
typedef struct IOCTLEntry IOCTLEntry;
typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp,
- int fd, abi_long cmd, abi_long arg);
+ int fd, int cmd, abi_long arg);
struct IOCTLEntry {
- unsigned int target_cmd;
+ int target_cmd;
unsigned int host_cmd;
const char *name;
int access;
/ sizeof(struct fiemap_extent))
static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp,
- int fd, abi_long cmd, abi_long arg)
+ int fd, int cmd, abi_long arg)
{
/* The parameter for this ioctl is a struct fiemap followed
* by an array of struct fiemap_extent whose size is set
/* We can't fit all the extents into the fixed size buffer.
* Allocate one that is large enough and use it instead.
*/
- fm = malloc(outbufsz);
+ fm = g_try_malloc(outbufsz);
if (!fm) {
return -TARGET_ENOMEM;
}
}
}
if (free_fm) {
- free(fm);
+ g_free(fm);
}
return ret;
}
#endif
static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp,
- int fd, abi_long cmd, abi_long arg)
+ int fd, int cmd, abi_long arg)
{
const argtype *arg_type = ie->arg_type;
int target_size;
}
static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
- abi_long cmd, abi_long arg)
+ int cmd, abi_long arg)
{
void *argptr;
struct dm_ioctl *host_dm;
}
default:
ret = -TARGET_EINVAL;
+ unlock_user(argptr, guest_data, 0);
goto out;
}
unlock_user(argptr, guest_data, 0);
break;
}
default:
+ unlock_user(argptr, guest_data, 0);
ret = -TARGET_EINVAL;
goto out;
}
}
static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd,
- abi_long cmd, abi_long arg)
+ int cmd, abi_long arg)
{
void *argptr;
int target_size;
}
static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp,
- int fd, abi_long cmd, abi_long arg)
+ int fd, int cmd, abi_long arg)
{
const argtype *arg_type = ie->arg_type;
const StructEntry *se;
}
static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp,
- int fd, abi_long cmd, abi_long arg)
+ int fd, int cmd, abi_long arg)
{
int sig = target_to_host_signal(arg);
return get_errno(ioctl(fd, ie->host_cmd, sig));
/* ??? Implement proper locking for ioctls. */
/* do_ioctl() Must return target values and target errnos. */
-static abi_long do_ioctl(int fd, abi_long cmd, abi_long arg)
+static abi_long do_ioctl(int fd, int cmd, abi_long arg)
{
const IOCTLEntry *ie;
const argtype *arg_type;
break;
case TYPE_PTRVOID:
case TYPE_INT:
- /* int argment */
ret = get_errno(ioctl(fd, ie->host_cmd, arg));
break;
case TYPE_PTR:
CPUState *cpu;
TaskState *ts;
+ rcu_register_thread();
env = info->env;
cpu = ENV_GET_CPU(env);
thread_cpu = cpu;
new_thread_info info;
pthread_attr_t attr;
- ts = g_malloc0(sizeof(TaskState));
+ ts = g_new0(TaskState, 1);
init_task_state(ts);
/* we create a new CPU instance. */
new_env = cpu_copy(env);
pthread_mutex_unlock(&clone_lock);
} else {
/* if no CLONE_VM, we consider it is a fork */
- if ((flags & ~(CSIGNAL | CLONE_NPTL_FLAGS2)) != 0)
- return -EINVAL;
+ if ((flags & ~(CSIGNAL | CLONE_NPTL_FLAGS2)) != 0) {
+ return -TARGET_EINVAL;
+ }
fork_start();
ret = fork();
if (ret == 0) {
/* Child Process. */
+ rcu_after_fork();
cpu_clone_regs(env, newsp);
fork_end(1);
/* There is a race condition here. The parent process could
int size;
int i;
+ thunk_init(STRUCT_MAX);
+
#define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
#define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
#include "syscall_types.h"
return -TARGET_ENOSYS;
}
}
+#if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
+static abi_long do_name_to_handle_at(abi_long dirfd, abi_long pathname,
+ abi_long handle, abi_long mount_id,
+ abi_long flags)
+{
+ struct file_handle *target_fh;
+ struct file_handle *fh;
+ int mid = 0;
+ abi_long ret;
+ char *name;
+ unsigned int size, total_size;
+
+ if (get_user_s32(size, handle)) {
+ return -TARGET_EFAULT;
+ }
+
+ name = lock_user_string(pathname);
+ if (!name) {
+ return -TARGET_EFAULT;
+ }
+
+ total_size = sizeof(struct file_handle) + size;
+ target_fh = lock_user(VERIFY_WRITE, handle, total_size, 0);
+ if (!target_fh) {
+ unlock_user(name, pathname, 0);
+ return -TARGET_EFAULT;
+ }
+
+ fh = g_malloc0(total_size);
+ fh->handle_bytes = size;
+
+ ret = get_errno(name_to_handle_at(dirfd, path(name), fh, &mid, flags));
+ unlock_user(name, pathname, 0);
+
+ /* man name_to_handle_at(2):
+ * Other than the use of the handle_bytes field, the caller should treat
+ * the file_handle structure as an opaque data type
+ */
+
+ memcpy(target_fh, fh, total_size);
+ target_fh->handle_bytes = tswap32(fh->handle_bytes);
+ target_fh->handle_type = tswap32(fh->handle_type);
+ g_free(fh);
+ unlock_user(target_fh, handle, total_size);
+
+ if (put_user_s32(mid, mount_id)) {
+ return -TARGET_EFAULT;
+ }
+
+ return ret;
+
+}
+#endif
+
+#if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
+static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle,
+ abi_long flags)
+{
+ struct file_handle *target_fh;
+ struct file_handle *fh;
+ unsigned int size, total_size;
+ abi_long ret;
+
+ if (get_user_s32(size, handle)) {
+ return -TARGET_EFAULT;
+ }
+
+ total_size = sizeof(struct file_handle) + size;
+ target_fh = lock_user(VERIFY_READ, handle, total_size, 1);
+ if (!target_fh) {
+ return -TARGET_EFAULT;
+ }
+
+ fh = g_memdup(target_fh, total_size);
+ fh->handle_bytes = size;
+ fh->handle_type = tswap32(target_fh->handle_type);
+
+ ret = get_errno(open_by_handle_at(mount_fd, fh,
+ target_to_host_bitmask(flags, fcntl_flags_tbl)));
+
+ g_free(fh);
+
+ unlock_user(target_fh, handle, total_size);
+
+ return ret;
+}
+#endif
+
+#if defined(TARGET_NR_signalfd) || defined(TARGET_NR_signalfd4)
+
+/* signalfd siginfo conversion */
+
+static void
+host_to_target_signalfd_siginfo(struct signalfd_siginfo *tinfo,
+ const struct signalfd_siginfo *info)
+{
+ int sig = host_to_target_signal(info->ssi_signo);
+
+ /* linux/signalfd.h defines a ssi_addr_lsb
+ * not defined in sys/signalfd.h but used by some kernels
+ */
+
+#ifdef BUS_MCEERR_AO
+ if (tinfo->ssi_signo == SIGBUS &&
+ (tinfo->ssi_code == BUS_MCEERR_AR ||
+ tinfo->ssi_code == BUS_MCEERR_AO)) {
+ uint16_t *ssi_addr_lsb = (uint16_t *)(&info->ssi_addr + 1);
+ uint16_t *tssi_addr_lsb = (uint16_t *)(&tinfo->ssi_addr + 1);
+ *tssi_addr_lsb = tswap16(*ssi_addr_lsb);
+ }
+#endif
+
+ tinfo->ssi_signo = tswap32(sig);
+ tinfo->ssi_errno = tswap32(tinfo->ssi_errno);
+ tinfo->ssi_code = tswap32(info->ssi_code);
+ tinfo->ssi_pid = tswap32(info->ssi_pid);
+ tinfo->ssi_uid = tswap32(info->ssi_uid);
+ tinfo->ssi_fd = tswap32(info->ssi_fd);
+ tinfo->ssi_tid = tswap32(info->ssi_tid);
+ tinfo->ssi_band = tswap32(info->ssi_band);
+ tinfo->ssi_overrun = tswap32(info->ssi_overrun);
+ tinfo->ssi_trapno = tswap32(info->ssi_trapno);
+ tinfo->ssi_status = tswap32(info->ssi_status);
+ tinfo->ssi_int = tswap32(info->ssi_int);
+ tinfo->ssi_ptr = tswap64(info->ssi_ptr);
+ tinfo->ssi_utime = tswap64(info->ssi_utime);
+ tinfo->ssi_stime = tswap64(info->ssi_stime);
+ tinfo->ssi_addr = tswap64(info->ssi_addr);
+}
+
+static abi_long host_to_target_data_signalfd(void *buf, size_t len)
+{
+ int i;
+
+ for (i = 0; i < len; i += sizeof(struct signalfd_siginfo)) {
+ host_to_target_signalfd_siginfo(buf + i, buf + i);
+ }
+
+ return len;
+}
+
+static TargetFdTrans target_signalfd_trans = {
+ .host_to_target_data = host_to_target_data_signalfd,
+};
+
+static abi_long do_signalfd4(int fd, abi_long mask, int flags)
+{
+ int host_flags;
+ target_sigset_t *target_mask;
+ sigset_t host_mask;
+ abi_long ret;
+
+ if (flags & ~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC)) {
+ return -TARGET_EINVAL;
+ }
+ if (!lock_user_struct(VERIFY_READ, target_mask, mask, 1)) {
+ return -TARGET_EFAULT;
+ }
+
+ target_to_host_sigset(&host_mask, target_mask);
+
+ host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
+
+ ret = get_errno(signalfd(fd, &host_mask, host_flags));
+ if (ret >= 0) {
+ fd_trans_register(ret, &target_signalfd_trans);
+ }
+
+ unlock_user_struct(target_mask, mask, 0);
+
+ return ret;
+}
+#endif
/* Map host to target signal numbers for the wait family of syscalls.
Assume all other status bits are the same. */
thread_cpu = NULL;
object_unref(OBJECT(cpu));
g_free(ts);
+ rcu_unregister_thread();
pthread_exit(NULL);
}
#ifdef TARGET_GPROF
if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
goto efault;
ret = get_errno(read(arg1, p, arg3));
+ if (ret >= 0 &&
+ fd_trans_host_to_target_data(arg1)) {
+ ret = fd_trans_host_to_target_data(arg1)(p, ret);
+ }
unlock_user(p, arg2, ret);
}
break;
ret = get_errno(write(arg1, p, arg3));
unlock_user(p, arg2, 0);
break;
+#ifdef TARGET_NR_open
case TARGET_NR_open:
if (!(p = lock_user_string(arg1)))
goto efault;
ret = get_errno(do_openat(cpu_env, AT_FDCWD, p,
target_to_host_bitmask(arg2, fcntl_flags_tbl),
arg3));
+ fd_trans_unregister(ret);
unlock_user(p, arg1, 0);
break;
+#endif
case TARGET_NR_openat:
if (!(p = lock_user_string(arg2)))
goto efault;
ret = get_errno(do_openat(cpu_env, arg1, p,
target_to_host_bitmask(arg3, fcntl_flags_tbl),
arg4));
+ fd_trans_unregister(ret);
unlock_user(p, arg2, 0);
break;
+#if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
+ case TARGET_NR_name_to_handle_at:
+ ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5);
+ break;
+#endif
+#if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE)
+ case TARGET_NR_open_by_handle_at:
+ ret = do_open_by_handle_at(arg1, arg2, arg3);
+ fd_trans_unregister(ret);
+ break;
+#endif
case TARGET_NR_close:
+ fd_trans_unregister(arg1);
ret = get_errno(close(arg1));
break;
case TARGET_NR_brk:
ret = do_brk(arg1);
break;
+#ifdef TARGET_NR_fork
case TARGET_NR_fork:
ret = get_errno(do_fork(cpu_env, SIGCHLD, 0, 0, 0, 0));
break;
+#endif
#ifdef TARGET_NR_waitpid
case TARGET_NR_waitpid:
{
if (!(p = lock_user_string(arg1)))
goto efault;
ret = get_errno(creat(p, arg2));
+ fd_trans_unregister(ret);
unlock_user(p, arg1, 0);
break;
#endif
+#ifdef TARGET_NR_link
case TARGET_NR_link:
{
void * p2;
unlock_user(p, arg1, 0);
}
break;
+#endif
#if defined(TARGET_NR_linkat)
case TARGET_NR_linkat:
{
}
break;
#endif
+#ifdef TARGET_NR_unlink
case TARGET_NR_unlink:
if (!(p = lock_user_string(arg1)))
goto efault;
ret = get_errno(unlink(p));
unlock_user(p, arg1, 0);
break;
+#endif
#if defined(TARGET_NR_unlinkat)
case TARGET_NR_unlinkat:
if (!(p = lock_user_string(arg2)))
}
*q = NULL;
- /* This case will not be caught by the host's execve() if its
- page size is bigger than the target's. */
- if (total_size > MAX_ARG_PAGES * TARGET_PAGE_SIZE) {
- ret = -TARGET_E2BIG;
- goto execve_end;
- }
if (!(p = lock_user_string(arg1)))
goto execve_efault;
ret = get_errno(execve(p, argp, envp));
}
break;
#endif
+#ifdef TARGET_NR_mknod
case TARGET_NR_mknod:
if (!(p = lock_user_string(arg1)))
goto efault;
ret = get_errno(mknod(p, arg2, arg3));
unlock_user(p, arg1, 0);
break;
+#endif
#if defined(TARGET_NR_mknodat)
case TARGET_NR_mknodat:
if (!(p = lock_user_string(arg2)))
unlock_user(p, arg2, 0);
break;
#endif
+#ifdef TARGET_NR_chmod
case TARGET_NR_chmod:
if (!(p = lock_user_string(arg1)))
goto efault;
ret = get_errno(chmod(p, arg2));
unlock_user(p, arg1, 0);
break;
+#endif
#ifdef TARGET_NR_break
case TARGET_NR_break:
goto unimplemented;
}
break;
#endif
+#ifdef TARGET_NR_utimes
case TARGET_NR_utimes:
{
struct timeval *tvp, tv[2];
unlock_user(p, arg1, 0);
}
break;
+#endif
#if defined(TARGET_NR_futimesat)
case TARGET_NR_futimesat:
{
case TARGET_NR_gtty:
goto unimplemented;
#endif
+#ifdef TARGET_NR_access
case TARGET_NR_access:
if (!(p = lock_user_string(arg1)))
goto efault;
ret = get_errno(access(path(p), arg2));
unlock_user(p, arg1, 0);
break;
+#endif
#if defined(TARGET_NR_faccessat) && defined(__NR_faccessat)
case TARGET_NR_faccessat:
if (!(p = lock_user_string(arg2)))
case TARGET_NR_kill:
ret = get_errno(kill(arg1, target_to_host_signal(arg2)));
break;
+#ifdef TARGET_NR_rename
case TARGET_NR_rename:
{
void *p2;
unlock_user(p, arg1, 0);
}
break;
+#endif
#if defined(TARGET_NR_renameat)
case TARGET_NR_renameat:
{
}
break;
#endif
+#ifdef TARGET_NR_mkdir
case TARGET_NR_mkdir:
if (!(p = lock_user_string(arg1)))
goto efault;
ret = get_errno(mkdir(p, arg2));
unlock_user(p, arg1, 0);
break;
+#endif
#if defined(TARGET_NR_mkdirat)
case TARGET_NR_mkdirat:
if (!(p = lock_user_string(arg2)))
unlock_user(p, arg2, 0);
break;
#endif
+#ifdef TARGET_NR_rmdir
case TARGET_NR_rmdir:
if (!(p = lock_user_string(arg1)))
goto efault;
ret = get_errno(rmdir(p));
unlock_user(p, arg1, 0);
break;
+#endif
case TARGET_NR_dup:
ret = get_errno(dup(arg1));
+ if (ret >= 0) {
+ fd_trans_dup(arg1, ret);
+ }
break;
+#ifdef TARGET_NR_pipe
case TARGET_NR_pipe:
ret = do_pipe(cpu_env, arg1, 0, 0);
break;
+#endif
#ifdef TARGET_NR_pipe2
case TARGET_NR_pipe2:
ret = do_pipe(cpu_env, arg1,
ret = get_errno(chroot(p));
unlock_user(p, arg1, 0);
break;
+#ifdef TARGET_NR_ustat
case TARGET_NR_ustat:
goto unimplemented;
+#endif
+#ifdef TARGET_NR_dup2
case TARGET_NR_dup2:
ret = get_errno(dup2(arg1, arg2));
+ if (ret >= 0) {
+ fd_trans_dup(arg1, arg2);
+ }
break;
+#endif
#if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3)
case TARGET_NR_dup3:
ret = get_errno(dup3(arg1, arg2, arg3));
+ if (ret >= 0) {
+ fd_trans_dup(arg1, arg2);
+ }
break;
#endif
#ifdef TARGET_NR_getppid /* not on alpha */
ret = get_errno(getppid());
break;
#endif
+#ifdef TARGET_NR_getpgrp
case TARGET_NR_getpgrp:
ret = get_errno(getpgrp());
break;
+#endif
case TARGET_NR_setsid:
ret = get_errno(setsid());
break;
}
break;
#endif
+#ifdef TARGET_NR_symlink
case TARGET_NR_symlink:
{
void *p2;
unlock_user(p, arg1, 0);
}
break;
+#endif
#if defined(TARGET_NR_symlinkat)
case TARGET_NR_symlinkat:
{
case TARGET_NR_oldlstat:
goto unimplemented;
#endif
+#ifdef TARGET_NR_readlink
case TARGET_NR_readlink:
{
void *p2;
unlock_user(p, arg1, 0);
}
break;
+#endif
#if defined(TARGET_NR_readlinkat)
case TARGET_NR_readlinkat:
{
#ifdef TARGET_NR_socket
case TARGET_NR_socket:
ret = do_socket(arg1, arg2, arg3);
+ fd_trans_unregister(ret);
break;
#endif
#ifdef TARGET_NR_socketpair
}
}
break;
+#ifdef TARGET_NR_stat
case TARGET_NR_stat:
if (!(p = lock_user_string(arg1)))
goto efault;
ret = get_errno(stat(path(p), &st));
unlock_user(p, arg1, 0);
goto do_stat;
+#endif
+#ifdef TARGET_NR_lstat
case TARGET_NR_lstat:
if (!(p = lock_user_string(arg1)))
goto efault;
ret = get_errno(lstat(path(p), &st));
unlock_user(p, arg1, 0);
goto do_stat;
+#endif
case TARGET_NR_fstat:
{
ret = get_errno(fstat(arg1, &st));
+#if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat)
do_stat:
+#endif
if (!is_error(ret)) {
struct target_stat *target_st;
#endif
#ifdef TARGET_NR_semctl
case TARGET_NR_semctl:
- ret = do_semctl(arg1, arg2, arg3, (union target_semun)(abi_ulong)arg4);
+ ret = do_semctl(arg1, arg2, arg3, arg4);
break;
#endif
#ifdef TARGET_NR_msgctl
}
break;
#endif
+#ifdef TARGET_NR_getdents
case TARGET_NR_getdents:
#ifdef __NR_getdents
#if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64
struct linux_dirent *dirp;
abi_long count = arg3;
- dirp = malloc(count);
- if (!dirp) {
+ dirp = g_try_malloc(count);
+ if (!dirp) {
ret = -TARGET_ENOMEM;
goto fail;
}
ret = count1;
unlock_user(target_dirp, arg2, ret);
}
- free(dirp);
+ g_free(dirp);
}
#else
{
}
#endif
break;
+#endif /* TARGET_NR_getdents */
#if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
case TARGET_NR_getdents64:
{
struct pollfd *pfd;
unsigned int i;
- target_pfd = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_pollfd) * nfds, 1);
- if (!target_pfd)
- goto efault;
+ pfd = NULL;
+ target_pfd = NULL;
+ if (nfds) {
+ target_pfd = lock_user(VERIFY_WRITE, arg1,
+ sizeof(struct target_pollfd) * nfds, 1);
+ if (!target_pfd) {
+ goto efault;
+ }
- pfd = alloca(sizeof(struct pollfd) * nfds);
- for(i = 0; i < nfds; i++) {
- pfd[i].fd = tswap32(target_pfd[i].fd);
- pfd[i].events = tswap16(target_pfd[i].events);
+ pfd = alloca(sizeof(struct pollfd) * nfds);
+ for (i = 0; i < nfds; i++) {
+ pfd[i].fd = tswap32(target_pfd[i].fd);
+ pfd[i].events = tswap16(target_pfd[i].events);
+ }
}
# ifdef TARGET_NR_ppoll
ret = get_errno(fdatasync(arg1));
break;
#endif
+#ifdef TARGET_NR__sysctl
case TARGET_NR__sysctl:
/* We don't implement this, but ENOTDIR is always a safe
return value. */
ret = -TARGET_ENOTDIR;
break;
+#endif
case TARGET_NR_sched_getaffinity:
{
unsigned int mask_size;
break;
}
case TARGET_NR_sigaltstack:
-#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_MIPS) || \
- defined(TARGET_SPARC) || defined(TARGET_PPC) || defined(TARGET_ALPHA) || \
- defined(TARGET_M68K) || defined(TARGET_S390X) || defined(TARGET_OPENRISC)
ret = do_sigaltstack(arg1, arg2, get_sp_from_cpustate((CPUArchState *)cpu_env));
break;
-#else
- goto unimplemented;
-#endif
#ifdef CONFIG_SENDFILE
case TARGET_NR_sendfile:
ret = host_to_target_stat64(cpu_env, arg3, &st);
break;
#endif
+#ifdef TARGET_NR_lchown
case TARGET_NR_lchown:
if (!(p = lock_user_string(arg1)))
goto efault;
ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3)));
unlock_user(p, arg1, 0);
break;
+#endif
#ifdef TARGET_NR_getuid
case TARGET_NR_getuid:
ret = get_errno(high2lowuid(getuid()));
}
break;
#endif
+#ifdef TARGET_NR_chown
case TARGET_NR_chown:
if (!(p = lock_user_string(arg1)))
goto efault;
ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3)));
unlock_user(p, arg1, 0);
break;
+#endif
case TARGET_NR_setuid:
ret = get_errno(setuid(low2highuid(arg1)));
break;
{
loff_t loff_in, loff_out;
loff_t *ploff_in = NULL, *ploff_out = NULL;
- if(arg2) {
- get_user_u64(loff_in, arg2);
+ if (arg2) {
+ if (get_user_u64(loff_in, arg2)) {
+ goto efault;
+ }
ploff_in = &loff_in;
}
- if(arg4) {
- get_user_u64(loff_out, arg2);
+ if (arg4) {
+ if (get_user_u64(loff_out, arg4)) {
+ goto efault;
+ }
ploff_out = &loff_out;
}
ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6));
+ if (arg2) {
+ if (put_user_u64(loff_in, arg2)) {
+ goto efault;
+ }
+ }
+ if (arg4) {
+ if (put_user_u64(loff_out, arg4)) {
+ goto efault;
+ }
+ }
}
break;
#endif
#if defined(TARGET_NR_eventfd)
case TARGET_NR_eventfd:
ret = get_errno(eventfd(arg1, 0));
+ fd_trans_unregister(ret);
break;
#endif
#if defined(TARGET_NR_eventfd2)
host_flags |= O_CLOEXEC;
}
ret = get_errno(eventfd(arg1, host_flags));
+ fd_trans_unregister(ret);
break;
}
#endif
break;
#endif
#endif
+#if defined(TARGET_NR_signalfd4)
+ case TARGET_NR_signalfd4:
+ ret = do_signalfd4(arg1, arg2, arg4);
+ break;
+#endif
+#if defined(TARGET_NR_signalfd)
+ case TARGET_NR_signalfd:
+ ret = do_signalfd4(arg1, arg2, 0);
+ break;
+#endif
#if defined(CONFIG_EPOLL)
#if defined(TARGET_NR_epoll_create)
case TARGET_NR_epoll_create:
/* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */
struct target_rlimit64 *target_rnew, *target_rold;
struct host_rlimit64 rnew, rold, *rnewp = 0;
+ int resource = target_to_host_resource(arg2);
if (arg3) {
if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) {
goto efault;
rnewp = &rnew;
}
- ret = get_errno(sys_prlimit64(arg1, arg2, rnewp, arg4 ? &rold : 0));
+ ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0));
if (!is_error(ret) && arg4) {
if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) {
goto efault;
timer_t htimer = g_posix_timers[timerid];
ret = get_errno(timer_getoverrun(htimer));
}
+ fd_trans_unregister(ret);
break;
}
#endif
projects / qemu.git / blobdiff