blob: 6efeeff2bf0e2665b42eea8d70828a791b9a3aee [file] [log] [blame]
/*
* Linux syscalls
*
* Copyright (c) 2003 Fabrice Bellard
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#define _ATFILE_SOURCE
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <elf.h>
#include <endian.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#include <limits.h>
#include <grp.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <sys/wait.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <sys/file.h>
#include <sys/fsuid.h>
#include <sys/personality.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/mman.h>
#include <sys/swap.h>
#include <linux/capability.h>
#include <signal.h>
#include <sched.h>
#ifdef __ia64__
int __clone2(int (*fn)(void *), void *child_stack_base,
size_t stack_size, int flags, void *arg, ...);
#endif
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/uio.h>
#include <sys/poll.h>
#include <sys/times.h>
#include <sys/shm.h>
#include <sys/sem.h>
#include <sys/statfs.h>
#include <utime.h>
#include <sys/sysinfo.h>
//#include <sys/user.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <linux/wireless.h>
#include <linux/icmp.h>
#include "qemu-common.h"
#ifdef TARGET_GPROF
#include <sys/gmon.h>
#endif
#ifdef CONFIG_EVENTFD
#include <sys/eventfd.h>
#endif
#ifdef CONFIG_EPOLL
#include <sys/epoll.h>
#endif
#ifdef CONFIG_ATTR
#include "qemu/xattr.h"
#endif
#ifdef CONFIG_SENDFILE
#include <sys/sendfile.h>
#endif
#define termios host_termios
#define winsize host_winsize
#define termio host_termio
#define sgttyb host_sgttyb /* same as target */
#define tchars host_tchars /* same as target */
#define ltchars host_ltchars /* same as target */
#include <linux/termios.h>
#include <linux/unistd.h>
#include <linux/cdrom.h>
#include <linux/hdreg.h>
#include <linux/soundcard.h>
#include <linux/kd.h>
#include <linux/mtio.h>
#include <linux/fs.h>
#if defined(CONFIG_FIEMAP)
#include <linux/fiemap.h>
#endif
#include <linux/fb.h>
#include <linux/vt.h>
#include <linux/dm-ioctl.h>
#include <linux/reboot.h>
#include <linux/route.h>
#include <linux/filter.h>
#include <linux/blkpg.h>
#include "linux_loop.h"
#include "uname.h"
#include "qemu.h"
#define CLONE_NPTL_FLAGS2 (CLONE_SETTLS | \
CLONE_PARENT_SETTID | CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID)
//#define DEBUG
//#include <linux/msdos_fs.h>
#define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2])
#define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2])
#undef _syscall0
#undef _syscall1
#undef _syscall2
#undef _syscall3
#undef _syscall4
#undef _syscall5
#undef _syscall6
#define _syscall0(type,name) \
static type name (void) \
{ \
return syscall(__NR_##name); \
}
#define _syscall1(type,name,type1,arg1) \
static type name (type1 arg1) \
{ \
return syscall(__NR_##name, arg1); \
}
#define _syscall2(type,name,type1,arg1,type2,arg2) \
static type name (type1 arg1,type2 arg2) \
{ \
return syscall(__NR_##name, arg1, arg2); \
}
#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
static type name (type1 arg1,type2 arg2,type3 arg3) \
{ \
return syscall(__NR_##name, arg1, arg2, arg3); \
}
#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \
{ \
return syscall(__NR_##name, arg1, arg2, arg3, arg4); \
}
#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
type5,arg5) \
static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
{ \
return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \
}
#define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
type5,arg5,type6,arg6) \
static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
type6 arg6) \
{ \
return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \
}
#define __NR_sys_uname __NR_uname
#define __NR_sys_getcwd1 __NR_getcwd
#define __NR_sys_getdents __NR_getdents
#define __NR_sys_getdents64 __NR_getdents64
#define __NR_sys_getpriority __NR_getpriority
#define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
#define __NR_sys_syslog __NR_syslog
#define __NR_sys_tgkill __NR_tgkill
#define __NR_sys_tkill __NR_tkill
#define __NR_sys_futex __NR_futex
#define __NR_sys_inotify_init __NR_inotify_init
#define __NR_sys_inotify_add_watch __NR_inotify_add_watch
#define __NR_sys_inotify_rm_watch __NR_inotify_rm_watch
#if defined(__alpha__) || defined (__ia64__) || defined(__x86_64__) || \
defined(__s390x__)
#define __NR__llseek __NR_lseek
#endif
/* Newer kernel ports have llseek() instead of _llseek() */
#if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek)
#define TARGET_NR__llseek TARGET_NR_llseek
#endif
#ifdef __NR_gettid
_syscall0(int, gettid)
#else
/* This is a replacement for the host gettid() and must return a host
errno. */
static int gettid(void) {
return -ENOSYS;
}
#endif
#ifdef __NR_getdents
_syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count);
#endif
#if !defined(__NR_getdents) || \
(defined(TARGET_NR_getdents64) && defined(__NR_getdents64))
_syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count);
#endif
#if defined(TARGET_NR__llseek) && defined(__NR_llseek)
_syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
loff_t *, res, uint, wh);
#endif
_syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo)
_syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
#if defined(TARGET_NR_tgkill) && defined(__NR_tgkill)
_syscall3(int,sys_tgkill,int,tgid,int,pid,int,sig)
#endif
#if defined(TARGET_NR_tkill) && defined(__NR_tkill)
_syscall2(int,sys_tkill,int,tid,int,sig)
#endif
#ifdef __NR_exit_group
_syscall1(int,exit_group,int,error_code)
#endif
#if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
_syscall1(int,set_tid_address,int *,tidptr)
#endif
#if defined(TARGET_NR_futex) && defined(__NR_futex)
_syscall6(int,sys_futex,int *,uaddr,int,op,int,val,
const struct timespec *,timeout,int *,uaddr2,int,val3)
#endif
#define __NR_sys_sched_getaffinity __NR_sched_getaffinity
_syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
unsigned long *, user_mask_ptr);
#define __NR_sys_sched_setaffinity __NR_sched_setaffinity
_syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len,
unsigned long *, user_mask_ptr);
_syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd,
void *, arg);
_syscall2(int, capget, struct __user_cap_header_struct *, header,
struct __user_cap_data_struct *, data);
_syscall2(int, capset, struct __user_cap_header_struct *, header,
struct __user_cap_data_struct *, data);
static bitmask_transtbl fcntl_flags_tbl[] = {
{ TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, },
{ TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, },
{ TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, },
{ TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, },
{ TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, },
{ TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, },
{ TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, },
{ TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, },
{ TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, },
{ TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, },
{ TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, },
{ TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, },
{ TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, },
#if defined(O_DIRECT)
{ TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, },
#endif
#if defined(O_NOATIME)
{ TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME },
#endif
#if defined(O_CLOEXEC)
{ TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC },
#endif
#if defined(O_PATH)
{ TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH },
#endif
/* Don't terminate the list prematurely on 64-bit host+guest. */
#if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0
{ TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, },
#endif
{ 0, 0, 0, 0 }
};
static int sys_getcwd1(char *buf, size_t size)
{
if (getcwd(buf, size) == NULL) {
/* getcwd() sets errno */
return (-1);
}
return strlen(buf)+1;
}
#ifdef TARGET_NR_openat
static int sys_openat(int dirfd, const char *pathname, int flags, mode_t mode)
{
/*
* open(2) has extra parameter 'mode' when called with
* flag O_CREAT.
*/
if ((flags & O_CREAT) != 0) {
return (openat(dirfd, pathname, flags, mode));
}
return (openat(dirfd, pathname, flags));
}
#endif
#ifdef TARGET_NR_utimensat
#ifdef CONFIG_UTIMENSAT
static int sys_utimensat(int dirfd, const char *pathname,
const struct timespec times[2], int flags)
{
if (pathname == NULL)
return futimens(dirfd, times);
else
return utimensat(dirfd, pathname, times, flags);
}
#elif defined(__NR_utimensat)
#define __NR_sys_utimensat __NR_utimensat
_syscall4(int,sys_utimensat,int,dirfd,const char *,pathname,
const struct timespec *,tsp,int,flags)
#else
static int sys_utimensat(int dirfd, const char *pathname,
const struct timespec times[2], int flags)
{
errno = ENOSYS;
return -1;
}
#endif
#endif /* TARGET_NR_utimensat */
#ifdef CONFIG_INOTIFY
#include <sys/inotify.h>
#if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)
static int sys_inotify_init(void)
{
return (inotify_init());
}
#endif
#if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch)
static int sys_inotify_add_watch(int fd,const char *pathname, int32_t mask)
{
return (inotify_add_watch(fd, pathname, mask));
}
#endif
#if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch)
static int sys_inotify_rm_watch(int fd, int32_t wd)
{
return (inotify_rm_watch(fd, wd));
}
#endif
#ifdef CONFIG_INOTIFY1
#if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1)
static int sys_inotify_init1(int flags)
{
return (inotify_init1(flags));
}
#endif
#endif
#else
/* Userspace can usually survive runtime without inotify */
#undef TARGET_NR_inotify_init
#undef TARGET_NR_inotify_init1
#undef TARGET_NR_inotify_add_watch
#undef TARGET_NR_inotify_rm_watch
#endif /* CONFIG_INOTIFY */
#if defined(TARGET_NR_ppoll)
#ifndef __NR_ppoll
# define __NR_ppoll -1
#endif
#define __NR_sys_ppoll __NR_ppoll
_syscall5(int, sys_ppoll, struct pollfd *, fds, nfds_t, nfds,
struct timespec *, timeout, const sigset_t *, sigmask,
size_t, sigsetsize)
#endif
#if defined(TARGET_NR_pselect6)
#ifndef __NR_pselect6
# define __NR_pselect6 -1
#endif
#define __NR_sys_pselect6 __NR_pselect6
_syscall6(int, sys_pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds,
fd_set *, exceptfds, struct timespec *, timeout, void *, sig);
#endif
#if defined(TARGET_NR_prlimit64)
#ifndef __NR_prlimit64
# define __NR_prlimit64 -1
#endif
#define __NR_sys_prlimit64 __NR_prlimit64
/* The glibc rlimit structure may not be that used by the underlying syscall */
struct host_rlimit64 {
uint64_t rlim_cur;
uint64_t rlim_max;
};
_syscall4(int, sys_prlimit64, pid_t, pid, int, resource,
const struct host_rlimit64 *, new_limit,
struct host_rlimit64 *, old_limit)
#endif
#if defined(TARGET_NR_timer_create)
/* Maxiumum of 32 active POSIX timers allowed at any one time. */
static timer_t g_posix_timers[32] = { 0, } ;
static inline int next_free_host_timer(void)
{
int k ;
/* FIXME: Does finding the next free slot require a lock? */
for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) {
if (g_posix_timers[k] == 0) {
g_posix_timers[k] = (timer_t) 1;
return k;
}
}
return -1;
}
#endif
/* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */
#ifdef TARGET_ARM
static inline int regpairs_aligned(void *cpu_env) {
return ((((CPUARMState *)cpu_env)->eabi) == 1) ;
}
#elif defined(TARGET_MIPS)
static inline int regpairs_aligned(void *cpu_env) { return 1; }
#elif defined(TARGET_PPC) && !defined(TARGET_PPC64)
/* SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs
* of registers which translates to the same as ARM/MIPS, because we start with
* r3 as arg1 */
static inline int regpairs_aligned(void *cpu_env) { return 1; }
#else
static inline int regpairs_aligned(void *cpu_env) { return 0; }
#endif
#define ERRNO_TABLE_SIZE 1200
/* target_to_host_errno_table[] is initialized from
* host_to_target_errno_table[] in syscall_init(). */
static uint16_t target_to_host_errno_table[ERRNO_TABLE_SIZE] = {
};
/*
* This list is the union of errno values overridden in asm-<arch>/errno.h
* minus the errnos that are not actually generic to all archs.
*/
static uint16_t host_to_target_errno_table[ERRNO_TABLE_SIZE] = {
[EIDRM] = TARGET_EIDRM,
[ECHRNG] = TARGET_ECHRNG,
[EL2NSYNC] = TARGET_EL2NSYNC,
[EL3HLT] = TARGET_EL3HLT,
[EL3RST] = TARGET_EL3RST,
[ELNRNG] = TARGET_ELNRNG,
[EUNATCH] = TARGET_EUNATCH,
[ENOCSI] = TARGET_ENOCSI,
[EL2HLT] = TARGET_EL2HLT,
[EDEADLK] = TARGET_EDEADLK,
[ENOLCK] = TARGET_ENOLCK,
[EBADE] = TARGET_EBADE,
[EBADR] = TARGET_EBADR,
[EXFULL] = TARGET_EXFULL,
[ENOANO] = TARGET_ENOANO,
[EBADRQC] = TARGET_EBADRQC,
[EBADSLT] = TARGET_EBADSLT,
[EBFONT] = TARGET_EBFONT,
[ENOSTR] = TARGET_ENOSTR,
[ENODATA] = TARGET_ENODATA,
[ETIME] = TARGET_ETIME,
[ENOSR] = TARGET_ENOSR,
[ENONET] = TARGET_ENONET,
[ENOPKG] = TARGET_ENOPKG,
[EREMOTE] = TARGET_EREMOTE,
[ENOLINK] = TARGET_ENOLINK,
[EADV] = TARGET_EADV,
[ESRMNT] = TARGET_ESRMNT,
[ECOMM] = TARGET_ECOMM,
[EPROTO] = TARGET_EPROTO,
[EDOTDOT] = TARGET_EDOTDOT,
[EMULTIHOP] = TARGET_EMULTIHOP,
[EBADMSG] = TARGET_EBADMSG,
[ENAMETOOLONG] = TARGET_ENAMETOOLONG,
[EOVERFLOW] = TARGET_EOVERFLOW,
[ENOTUNIQ] = TARGET_ENOTUNIQ,
[EBADFD] = TARGET_EBADFD,
[EREMCHG] = TARGET_EREMCHG,
[ELIBACC] = TARGET_ELIBACC,
[ELIBBAD] = TARGET_ELIBBAD,
[ELIBSCN] = TARGET_ELIBSCN,
[ELIBMAX] = TARGET_ELIBMAX,
[ELIBEXEC] = TARGET_ELIBEXEC,
[EILSEQ] = TARGET_EILSEQ,
[ENOSYS] = TARGET_ENOSYS,
[ELOOP] = TARGET_ELOOP,
[ERESTART] = TARGET_ERESTART,
[ESTRPIPE] = TARGET_ESTRPIPE,
[ENOTEMPTY] = TARGET_ENOTEMPTY,
[EUSERS] = TARGET_EUSERS,
[ENOTSOCK] = TARGET_ENOTSOCK,
[EDESTADDRREQ] = TARGET_EDESTADDRREQ,
[EMSGSIZE] = TARGET_EMSGSIZE,
[EPROTOTYPE] = TARGET_EPROTOTYPE,
[ENOPROTOOPT] = TARGET_ENOPROTOOPT,
[EPROTONOSUPPORT] = TARGET_EPROTONOSUPPORT,
[ESOCKTNOSUPPORT] = TARGET_ESOCKTNOSUPPORT,
[EOPNOTSUPP] = TARGET_EOPNOTSUPP,
[EPFNOSUPPORT] = TARGET_EPFNOSUPPORT,
[EAFNOSUPPORT] = TARGET_EAFNOSUPPORT,
[EADDRINUSE] = TARGET_EADDRINUSE,
[EADDRNOTAVAIL] = TARGET_EADDRNOTAVAIL,
[ENETDOWN] = TARGET_ENETDOWN,
[ENETUNREACH] = TARGET_ENETUNREACH,
[ENETRESET] = TARGET_ENETRESET,
[ECONNABORTED] = TARGET_ECONNABORTED,
[ECONNRESET] = TARGET_ECONNRESET,
[ENOBUFS] = TARGET_ENOBUFS,
[EISCONN] = TARGET_EISCONN,
[ENOTCONN] = TARGET_ENOTCONN,
[EUCLEAN] = TARGET_EUCLEAN,
[ENOTNAM] = TARGET_ENOTNAM,
[ENAVAIL] = TARGET_ENAVAIL,
[EISNAM] = TARGET_EISNAM,
[EREMOTEIO] = TARGET_EREMOTEIO,
[ESHUTDOWN] = TARGET_ESHUTDOWN,
[ETOOMANYREFS] = TARGET_ETOOMANYREFS,
[ETIMEDOUT] = TARGET_ETIMEDOUT,
[ECONNREFUSED] = TARGET_ECONNREFUSED,
[EHOSTDOWN] = TARGET_EHOSTDOWN,
[EHOSTUNREACH] = TARGET_EHOSTUNREACH,
[EALREADY] = TARGET_EALREADY,
[EINPROGRESS] = TARGET_EINPROGRESS,
[ESTALE] = TARGET_ESTALE,
[ECANCELED] = TARGET_ECANCELED,
[ENOMEDIUM] = TARGET_ENOMEDIUM,
[EMEDIUMTYPE] = TARGET_EMEDIUMTYPE,
#ifdef ENOKEY
[ENOKEY] = TARGET_ENOKEY,
#endif
#ifdef EKEYEXPIRED
[EKEYEXPIRED] = TARGET_EKEYEXPIRED,
#endif
#ifdef EKEYREVOKED
[EKEYREVOKED] = TARGET_EKEYREVOKED,
#endif
#ifdef EKEYREJECTED
[EKEYREJECTED] = TARGET_EKEYREJECTED,
#endif
#ifdef EOWNERDEAD
[EOWNERDEAD] = TARGET_EOWNERDEAD,
#endif
#ifdef ENOTRECOVERABLE
[ENOTRECOVERABLE] = TARGET_ENOTRECOVERABLE,
#endif
};
static inline int host_to_target_errno(int err)
{
if(host_to_target_errno_table[err])
return host_to_target_errno_table[err];
return err;
}
static inline int target_to_host_errno(int err)
{
if (target_to_host_errno_table[err])
return target_to_host_errno_table[err];
return err;
}
static inline abi_long get_errno(abi_long ret)
{
if (ret == -1)
return -host_to_target_errno(errno);
else
return ret;
}
static inline int is_error(abi_long ret)
{
return (abi_ulong)ret >= (abi_ulong)(-4096);
}
char *target_strerror(int err)
{
if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) {
return NULL;
}
return strerror(target_to_host_errno(err));
}
static abi_ulong target_brk;
static abi_ulong target_original_brk;
static abi_ulong brk_page;
void target_set_brk(abi_ulong new_brk)
{
target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk);
brk_page = HOST_PAGE_ALIGN(target_brk);
}
//#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0)
#define DEBUGF_BRK(message, args...)
/* do_brk() must return target values and target errnos. */
abi_long do_brk(abi_ulong new_brk)
{
abi_long mapped_addr;
int new_alloc_size;
DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk);
if (!new_brk) {
DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk);
return target_brk;
}
if (new_brk < target_original_brk) {
DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n",
target_brk);
return target_brk;
}
/* If the new brk is less than the highest page reserved to the
* target heap allocation, set it and we're almost done... */
if (new_brk <= brk_page) {
/* Heap contents are initialized to zero, as for anonymous
* mapped pages. */
if (new_brk > target_brk) {
memset(g2h(target_brk), 0, new_brk - target_brk);
}
target_brk = new_brk;
DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk);
return target_brk;
}
/* We need to allocate more memory after the brk... Note that
* we don't use MAP_FIXED because that will map over the top of
* any existing mapping (like the one with the host libc or qemu
* itself); instead we treat "mapped but at wrong address" as
* a failure and unmap again.
*/
new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page);
mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size,
PROT_READ|PROT_WRITE,
MAP_ANON|MAP_PRIVATE, 0, 0));
if (mapped_addr == brk_page) {
/* Heap contents are initialized to zero, as for anonymous
* mapped pages. Technically the new pages are already
* initialized to zero since they *are* anonymous mapped
* pages, however we have to take care with the contents that
* come from the remaining part of the previous page: it may
* contains garbage data due to a previous heap usage (grown
* then shrunken). */
memset(g2h(target_brk), 0, brk_page - target_brk);
target_brk = new_brk;
brk_page = HOST_PAGE_ALIGN(target_brk);
DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n",
target_brk);
return target_brk;
} else if (mapped_addr != -1) {
/* Mapped but at wrong address, meaning there wasn't actually
* enough space for this brk.
*/
target_munmap(mapped_addr, new_alloc_size);
mapped_addr = -1;
DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk);
}
else {
DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk);
}
#if defined(TARGET_ALPHA)
/* We (partially) emulate OSF/1 on Alpha, which requires we
return a proper errno, not an unchanged brk value. */
return -TARGET_ENOMEM;
#endif
/* For everything else, return the previous break. */
return target_brk;
}
static inline abi_long copy_from_user_fdset(fd_set *fds,
abi_ulong target_fds_addr,
int n)
{
int i, nw, j, k;
abi_ulong b, *target_fds;
nw = (n + TARGET_ABI_BITS - 1) / TARGET_ABI_BITS;
if (!(target_fds = lock_user(VERIFY_READ,
target_fds_addr,
sizeof(abi_ulong) * nw,
1)))
return -TARGET_EFAULT;
FD_ZERO(fds);
k = 0;
for (i = 0; i < nw; i++) {
/* grab the abi_ulong */
__get_user(b, &target_fds[i]);
for (j = 0; j < TARGET_ABI_BITS; j++) {
/* check the bit inside the abi_ulong */
if ((b >> j) & 1)
FD_SET(k, fds);
k++;
}
}
unlock_user(target_fds, target_fds_addr, 0);
return 0;
}
static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr,
abi_ulong target_fds_addr,
int n)
{
if (target_fds_addr) {
if (copy_from_user_fdset(fds, target_fds_addr, n))
return -TARGET_EFAULT;
*fds_ptr = fds;
} else {
*fds_ptr = NULL;
}
return 0;
}
static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr,
const fd_set *fds,
int n)
{
int i, nw, j, k;
abi_long v;
abi_ulong *target_fds;
nw = (n + TARGET_ABI_BITS - 1) / TARGET_ABI_BITS;
if (!(target_fds = lock_user(VERIFY_WRITE,
target_fds_addr,
sizeof(abi_ulong) * nw,
0)))
return -TARGET_EFAULT;
k = 0;
for (i = 0; i < nw; i++) {
v = 0;
for (j = 0; j < TARGET_ABI_BITS; j++) {
v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j);
k++;
}
__put_user(v, &target_fds[i]);
}
unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw);
return 0;
}
#if defined(__alpha__)
#define HOST_HZ 1024
#else
#define HOST_HZ 100
#endif
static inline abi_long host_to_target_clock_t(long ticks)
{
#if HOST_HZ == TARGET_HZ
return ticks;
#else
return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
#endif
}
static inline abi_long host_to_target_rusage(abi_ulong target_addr,
const struct rusage *rusage)
{
struct target_rusage *target_rusage;
if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0))
return -TARGET_EFAULT;
target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec);
target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec);
target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec);
target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec);
target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss);
target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss);
target_rusage->ru_idrss = tswapal(rusage->ru_idrss);
target_rusage->ru_isrss = tswapal(rusage->ru_isrss);
target_rusage->ru_minflt = tswapal(rusage->ru_minflt);
target_rusage->ru_majflt = tswapal(rusage->ru_majflt);
target_rusage->ru_nswap = tswapal(rusage->ru_nswap);
target_rusage->ru_inblock = tswapal(rusage->ru_inblock);
target_rusage->ru_oublock = tswapal(rusage->ru_oublock);
target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd);
target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv);
target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals);
target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw);
target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw);
unlock_user_struct(target_rusage, target_addr, 1);
return 0;
}
static inline rlim_t target_to_host_rlim(abi_ulong target_rlim)
{
abi_ulong target_rlim_swap;
rlim_t result;
target_rlim_swap = tswapal(target_rlim);
if (target_rlim_swap == TARGET_RLIM_INFINITY)
return RLIM_INFINITY;
result = target_rlim_swap;
if (target_rlim_swap != (rlim_t)result)
return RLIM_INFINITY;
return result;
}
static inline abi_ulong host_to_target_rlim(rlim_t rlim)
{
abi_ulong target_rlim_swap;
abi_ulong result;
if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim)
target_rlim_swap = TARGET_RLIM_INFINITY;
else
target_rlim_swap = rlim;
result = tswapal(target_rlim_swap);
return result;
}
static inline int target_to_host_resource(int code)
{
switch (code) {
case TARGET_RLIMIT_AS:
return RLIMIT_AS;
case TARGET_RLIMIT_CORE:
return RLIMIT_CORE;
case TARGET_RLIMIT_CPU:
return RLIMIT_CPU;
case TARGET_RLIMIT_DATA:
return RLIMIT_DATA;
case TARGET_RLIMIT_FSIZE:
return RLIMIT_FSIZE;
case TARGET_RLIMIT_LOCKS:
return RLIMIT_LOCKS;
case TARGET_RLIMIT_MEMLOCK:
return RLIMIT_MEMLOCK;
case TARGET_RLIMIT_MSGQUEUE:
return RLIMIT_MSGQUEUE;
case TARGET_RLIMIT_NICE:
return RLIMIT_NICE;
case TARGET_RLIMIT_NOFILE:
return RLIMIT_NOFILE;
case TARGET_RLIMIT_NPROC:
return RLIMIT_NPROC;
case TARGET_RLIMIT_RSS:
return RLIMIT_RSS;
case TARGET_RLIMIT_RTPRIO:
return RLIMIT_RTPRIO;
case TARGET_RLIMIT_SIGPENDING:
return RLIMIT_SIGPENDING;
case TARGET_RLIMIT_STACK:
return RLIMIT_STACK;
default:
return code;
}
}
static inline abi_long copy_from_user_timeval(struct timeval *tv,
abi_ulong target_tv_addr)
{
struct target_timeval *target_tv;
if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1))
return -TARGET_EFAULT;
__get_user(tv->tv_sec, &target_tv->tv_sec);
__get_user(tv->tv_usec, &target_tv->tv_usec);
unlock_user_struct(target_tv, target_tv_addr, 0);
return 0;
}
static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr,
const struct timeval *tv)
{
struct target_timeval *target_tv;
if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0))
return -TARGET_EFAULT;
__put_user(tv->tv_sec, &target_tv->tv_sec);
__put_user(tv->tv_usec, &target_tv->tv_usec);
unlock_user_struct(target_tv, target_tv_addr, 1);
return 0;
}
#if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
#include <mqueue.h>
static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr,
abi_ulong target_mq_attr_addr)
{
struct target_mq_attr *target_mq_attr;
if (!lock_user_struct(VERIFY_READ, target_mq_attr,
target_mq_attr_addr, 1))
return -TARGET_EFAULT;
__get_user(attr->mq_flags, &target_mq_attr->mq_flags);
__get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
__get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
__get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0);
return 0;
}
static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr,
const struct mq_attr *attr)
{
struct target_mq_attr *target_mq_attr;
if (!lock_user_struct(VERIFY_WRITE, target_mq_attr,
target_mq_attr_addr, 0))
return -TARGET_EFAULT;
__put_user(attr->mq_flags, &target_mq_attr->mq_flags);
__put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg);
__put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize);
__put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs);
unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1);
return 0;
}
#endif
#if defined(TARGET_NR_select) || defined(TARGET_NR__newselect)
/* do_select() must return target values and target errnos. */
static abi_long do_select(int n,
abi_ulong rfd_addr, abi_ulong wfd_addr,
abi_ulong efd_addr, abi_ulong target_tv_addr)
{
fd_set rfds, wfds, efds;
fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
struct timeval tv, *tv_ptr;
abi_long ret;
ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n);
if (ret) {
return ret;
}
ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n);
if (ret) {
return ret;
}
ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n);
if (ret) {
return ret;
}
if (target_tv_addr) {
if (copy_from_user_timeval(&tv, target_tv_addr))
return -TARGET_EFAULT;
tv_ptr = &tv;
} else {
tv_ptr = NULL;
}
ret = get_errno(select(n, rfds_ptr, wfds_ptr, efds_ptr, tv_ptr));
if (!is_error(ret)) {
if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n))
return -TARGET_EFAULT;
if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n))
return -TARGET_EFAULT;
if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n))
return -TARGET_EFAULT;
if (target_tv_addr && copy_to_user_timeval(target_tv_addr, &tv))
return -TARGET_EFAULT;
}
return ret;
}
#endif
static abi_long do_pipe2(int host_pipe[], int flags)
{
#ifdef CONFIG_PIPE2
return pipe2(host_pipe, flags);
#else
return -ENOSYS;
#endif
}
static abi_long do_pipe(void *cpu_env, abi_ulong pipedes,
int flags, int is_pipe2)
{
int host_pipe[2];
abi_long ret;
ret = flags ? do_pipe2(host_pipe, flags) : pipe(host_pipe);
if (is_error(ret))
return get_errno(ret);
/* Several targets have special calling conventions for the original
pipe syscall, but didn't replicate this into the pipe2 syscall. */
if (!is_pipe2) {
#if defined(TARGET_ALPHA)
((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1];
return host_pipe[0];
#elif defined(TARGET_MIPS)
((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1];
return host_pipe[0];
#elif defined(TARGET_SH4)
((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1];
return host_pipe[0];
#elif defined(TARGET_SPARC)
((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1];
return host_pipe[0];
#endif
}
if (put_user_s32(host_pipe[0], pipedes)
|| put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0])))
return -TARGET_EFAULT;
return get_errno(ret);
}
static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn,
abi_ulong target_addr,
socklen_t len)
{
struct target_ip_mreqn *target_smreqn;
target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1);
if (!target_smreqn)
return -TARGET_EFAULT;
mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr;
mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr;
if (len == sizeof(struct target_ip_mreqn))
mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex);
unlock_user(target_smreqn, target_addr, 0);
return 0;
}
static inline abi_long target_to_host_sockaddr(struct sockaddr *addr,
abi_ulong target_addr,
socklen_t len)
{
const socklen_t unix_maxlen = sizeof (struct sockaddr_un);
sa_family_t sa_family;
struct target_sockaddr *target_saddr;
target_saddr = lock_user(VERIFY_READ, target_addr, len, 1);
if (!target_saddr)
return -TARGET_EFAULT;
sa_family = tswap16(target_saddr->sa_family);
/* Oops. The caller might send a incomplete sun_path; sun_path
* must be terminated by \0 (see the manual page), but
* unfortunately it is quite common to specify sockaddr_un
* length as "strlen(x->sun_path)" while it should be
* "strlen(...) + 1". We'll fix that here if needed.
* Linux kernel has a similar feature.
*/
if (sa_family == AF_UNIX) {
if (len < unix_maxlen && len > 0) {
char *cp = (char*)target_saddr;
if ( cp[len-1] && !cp[len] )
len++;
}
if (len > unix_maxlen)
len = unix_maxlen;
}
memcpy(addr, target_saddr, len);
addr->sa_family = sa_family;
unlock_user(target_saddr, target_addr, 0);
return 0;
}
static inline abi_long host_to_target_sockaddr(abi_ulong target_addr,
struct sockaddr *addr,
socklen_t len)
{
struct target_sockaddr *target_saddr;
target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0);
if (!target_saddr)
return -TARGET_EFAULT;
memcpy(target_saddr, addr, len);
target_saddr->sa_family = tswap16(addr->sa_family);
unlock_user(target_saddr, target_addr, len);
return 0;
}
static inline abi_long target_to_host_cmsg(struct msghdr *msgh,
struct target_msghdr *target_msgh)
{
struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
abi_long msg_controllen;
abi_ulong target_cmsg_addr;
struct target_cmsghdr *target_cmsg;
socklen_t space = 0;
msg_controllen = tswapal(target_msgh->msg_controllen);
if (msg_controllen < sizeof (struct target_cmsghdr))
goto the_end;
target_cmsg_addr = tswapal(target_msgh->msg_control);
target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1);
if (!target_cmsg)
return -TARGET_EFAULT;
while (cmsg && target_cmsg) {
void *data = CMSG_DATA(cmsg);
void *target_data = TARGET_CMSG_DATA(target_cmsg);
int len = tswapal(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\n");
break;
}
if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) {
cmsg->cmsg_level = SOL_SOCKET;
} else {
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);
}
unlock_user(target_cmsg, target_cmsg_addr, 0);
the_end:
msgh->msg_controllen = space;
return 0;
}
static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh,
struct msghdr *msgh)
{
struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
abi_long msg_controllen;
abi_ulong target_cmsg_addr;
struct target_cmsghdr *target_cmsg;
socklen_t space = 0;
msg_controllen = tswapal(target_msgh->msg_controllen);
if (msg_controllen < sizeof (struct target_cmsghdr))
goto the_end;
target_cmsg_addr = tswapal(target_msgh->msg_control);
target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0);
if (!target_cmsg)
return -TARGET_EFAULT;
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 > msg_controllen) {
space -= TARGET_CMSG_SPACE(len);
gemu_log("Target cmsg overflow\n");
break;
}
if (cmsg->cmsg_level == SOL_SOCKET) {
target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET);
} else {
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));
switch (cmsg->cmsg_level) {
case SOL_SOCKET:
switch (cmsg->cmsg_type) {
case SCM_RIGHTS:
{
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]);
break;
}
case SO_TIMESTAMP:
{
struct timeval *tv = (struct timeval *)data;
struct target_timeval *target_tv =
(struct target_timeval *)target_data;
if (len != sizeof(struct timeval))
goto unimplemented;
/* copy struct timeval to target */
target_tv->tv_sec = tswapal(tv->tv_sec);
target_tv->tv_usec = tswapal(tv->tv_usec);
break;
}
case SCM_CREDENTIALS:
{
struct ucred *cred = (struct ucred *)data;
struct target_ucred *target_cred =
(struct target_ucred *)target_data;
__put_user(cred->pid, &target_cred->pid);
__put_user(cred->uid, &target_cred->uid);
__put_user(cred->gid, &target_cred->gid);
break;
}
default:
goto unimplemented;
}
break;
default:
unimplemented:
gemu_log("Unsupported ancillary data: %d/%d\n",
cmsg->cmsg_level, cmsg->cmsg_type);
memcpy(target_data, data, len);
}
cmsg = CMSG_NXTHDR(msgh, cmsg);
target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
}
unlock_user(target_cmsg, target_cmsg_addr, space);
the_end:
target_msgh->msg_controllen = tswapal(space);
return 0;
}
/* do_setsockopt() Must return target values and target errnos. */
static abi_long do_setsockopt(int sockfd, int level, int optname,
abi_ulong optval_addr, socklen_t optlen)
{
abi_long ret;
int val;
struct ip_mreqn *ip_mreq;
struct ip_mreq_source *ip_mreq_source;
switch(level) {
case SOL_TCP:
/* TCP options all take an 'int' value. */
if (optlen < sizeof(uint32_t))
return -TARGET_EINVAL;
if (get_user_u32(val, optval_addr))
return -TARGET_EFAULT;
ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
break;
case SOL_IP:
switch(optname) {
case IP_TOS:
case IP_TTL:
case IP_HDRINCL:
case IP_ROUTER_ALERT:
case IP_RECVOPTS:
case IP_RETOPTS:
case IP_PKTINFO:
case IP_MTU_DISCOVER:
case IP_RECVERR:
case IP_RECVTOS:
#ifdef IP_FREEBIND
case IP_FREEBIND:
#endif
case IP_MULTICAST_TTL:
case IP_MULTICAST_LOOP:
val = 0;
if (optlen >= sizeof(uint32_t)) {
if (get_user_u32(val, optval_addr))
return -TARGET_EFAULT;
} else if (optlen >= 1) {
if (get_user_u8(val, optval_addr))
return -TARGET_EFAULT;
}
ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
break;
case IP_ADD_MEMBERSHIP:
case IP_DROP_MEMBERSHIP:
if (optlen < sizeof (struct target_ip_mreq) ||
optlen > sizeof (struct target_ip_mreqn))
return -TARGET_EINVAL;
ip_mreq = (struct ip_mreqn *) alloca(optlen);
target_to_host_ip_mreq(ip_mreq, optval_addr, optlen);
ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen));
break;
case IP_BLOCK_SOURCE:
case IP_UNBLOCK_SOURCE:
case IP_ADD_SOURCE_MEMBERSHIP:
case IP_DROP_SOURCE_MEMBERSHIP:
if (optlen != sizeof (struct target_ip_mreq_source))
return -TARGET_EINVAL;
ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1);
ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen));
unlock_user (ip_mreq_source, optval_addr, 0);
break;
default:
goto unimplemented;
}
break;
case SOL_IPV6:
switch (optname) {
case IPV6_MTU_DISCOVER:
case IPV6_MTU:
case IPV6_V6ONLY:
case IPV6_RECVPKTINFO:
val = 0;
if (optlen < sizeof(uint32_t)) {
return -TARGET_EINVAL;
}
if (get_user_u32(val, optval_addr)) {
return -TARGET_EFAULT;
}
ret = get_errno(setsockopt(sockfd, level, optname,
&val, sizeof(val)));
break;
default:
goto unimplemented;
}
break;
case SOL_RAW:
switch (optname) {
case ICMP_FILTER:
/* struct icmp_filter takes an u32 value */
if (optlen < sizeof(uint32_t)) {
return -TARGET_EINVAL;
}
if (get_user_u32(val, optval_addr)) {
return -TARGET_EFAULT;
}
ret = get_errno(setsockopt(sockfd, level, optname,
&val, sizeof(val)));
break;
default:
goto unimplemented;
}
break;
case TARGET_SOL_SOCKET:
switch (optname) {
case TARGET_SO_RCVTIMEO:
{
struct timeval tv;
optname = SO_RCVTIMEO;
set_timeout:
if (optlen != sizeof(struct target_timeval)) {
return -TARGET_EINVAL;
}
if (copy_from_user_timeval(&tv, optval_addr)) {
return -TARGET_EFAULT;
}
ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname,
&tv, sizeof(tv)));
return ret;
}
case TARGET_SO_SNDTIMEO:
optname = SO_SNDTIMEO;
goto set_timeout;
case TARGET_SO_ATTACH_FILTER:
{
struct target_sock_fprog *tfprog;
struct target_sock_filter *tfilter;
struct sock_fprog fprog;
struct sock_filter *filter;
int i;
if (optlen != sizeof(*tfprog)) {
return -TARGET_EINVAL;
}
if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) {
return -TARGET_EFAULT;
}
if (!lock_user_struct(VERIFY_READ, tfilter,
tswapal(tfprog->filter), 0)) {
unlock_user_struct(tfprog, optval_addr, 1);
return -TARGET_EFAULT;
}
fprog.len = tswap16(tfprog->len);
filter = malloc(fprog.len * sizeof(*filter));
if (filter == NULL) {
unlock_user_struct(tfilter, tfprog->filter, 1);
unlock_user_struct(tfprog, optval_addr, 1);
return -TARGET_ENOMEM;
}
for (i = 0; i < fprog.len; i++) {
filter[i].code = tswap16(tfilter[i].code);
filter[i].jt = tfilter[i].jt;
filter[i].jf = tfilter[i].jf;
filter[i].k = tswap32(tfilter[i].k);
}
fprog.filter = filter;
ret = get_errno(setsockopt(sockfd, SOL_SOCKET,
SO_ATTACH_FILTER, &fprog, sizeof(fprog)));
free(filter);
unlock_user_struct(tfilter, tfprog->filter, 1);
unlock_user_struct(tfprog, optval_addr, 1);
return ret;
}
/* Options with 'int' argument. */
case TARGET_SO_DEBUG:
optname = SO_DEBUG;
break;
case TARGET_SO_REUSEADDR:
optname = SO_REUSEADDR;
break;
case TARGET_SO_TYPE:
optname = SO_TYPE;
break;
case TARGET_SO_ERROR:
optname = SO_ERROR;
break;
case TARGET_SO_DONTROUTE:
optname = SO_DONTROUTE;
break;
case TARGET_SO_BROADCAST:
optname = SO_BROADCAST;
break;
case TARGET_SO_SNDBUF:
optname = SO_SNDBUF;
break;
case TARGET_SO_RCVBUF:
optname = SO_RCVBUF;
break;
case TARGET_SO_KEEPALIVE:
optname = SO_KEEPALIVE;
break;
case TARGET_SO_OOBINLINE:
optname = SO_OOBINLINE;
break;
case TARGET_SO_NO_CHECK:
optname = SO_NO_CHECK;
break;
case TARGET_SO_PRIORITY:
optname = SO_PRIORITY;
break;
#ifdef SO_BSDCOMPAT
case TARGET_SO_BSDCOMPAT:
optname = SO_BSDCOMPAT;
break;
#endif
case TARGET_SO_PASSCRED:
optname = SO_PASSCRED;
break;
case TARGET_SO_TIMESTAMP:
optname = SO_TIMESTAMP;
break;
case TARGET_SO_RCVLOWAT:
optname = SO_RCVLOWAT;
break;
break;
default:
goto unimplemented;
}
if (optlen < sizeof(uint32_t))
return -TARGET_EINVAL;
if (get_user_u32(val, optval_addr))
return -TARGET_EFAULT;
ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val)));
break;
default:
unimplemented:
gemu_log("Unsupported setsockopt level=%d optname=%d\n", level, optname);
ret = -TARGET_ENOPROTOOPT;
}
return ret;
}
/* do_getsockopt() Must return target values and target errnos. */
static abi_long do_getsockopt(int sockfd, int level, int optname,
abi_ulong optval_addr, abi_ulong optlen)
{
abi_long ret;
int len, val;
socklen_t lv;
switch(level) {
case TARGET_SOL_SOCKET:
level = SOL_SOCKET;
switch (optname) {
/* These don't just return a single integer */
case TARGET_SO_LINGER:
case TARGET_SO_RCVTIMEO:
case TARGET_SO_SNDTIMEO:
case TARGET_SO_PEERNAME:
goto unimplemented;
case TARGET_SO_PEERCRED: {
struct ucred cr;
socklen_t crlen;
struct target_ucred *tcr;
if (get_user_u32(len, optlen)) {
return -TARGET_EFAULT;
}
if (len < 0) {
return -TARGET_EINVAL;
}
crlen = sizeof(cr);
ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED,
&cr, &crlen));
if (ret < 0) {
return ret;
}
if (len > crlen) {
len = crlen;
}
if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) {
return -TARGET_EFAULT;
}
__put_user(cr.pid, &tcr->pid);
__put_user(cr.uid, &tcr->uid);
__put_user(cr.gid, &tcr->gid);
unlock_user_struct(tcr, optval_addr, 1);
if (put_user_u32(len, optlen)) {
return -TARGET_EFAULT;
}
break;
}
/* Options with 'int' argument. */
case TARGET_SO_DEBUG:
optname = SO_DEBUG;
goto int_case;
case TARGET_SO_REUSEADDR:
optname = SO_REUSEADDR;
goto int_case;
case TARGET_SO_TYPE:
optname = SO_TYPE;
goto int_case;
case TARGET_SO_ERROR:
optname = SO_ERROR;
goto int_case;
case TARGET_SO_DONTROUTE:
optname = SO_DONTROUTE;
goto int_case;
case TARGET_SO_BROADCAST:
optname = SO_BROADCAST;
goto int_case;
case TARGET_SO_SNDBUF:
optname = SO_SNDBUF;
goto int_case;
case TARGET_SO_RCVBUF:
optname = SO_RCVBUF;
goto int_case;
case TARGET_SO_KEEPALIVE:
optname = SO_KEEPALIVE;
goto int_case;
case TARGET_SO_OOBINLINE:
optname = SO_OOBINLINE;
goto int_case;
case TARGET_SO_NO_CHECK:
optname = SO_NO_CHECK;
goto int_case;
case TARGET_SO_PRIORITY:
optname = SO_PRIORITY;
goto int_case;
#ifdef SO_BSDCOMPAT
case TARGET_SO_BSDCOMPAT:
optname = SO_BSDCOMPAT;
goto int_case;
#endif
case TARGET_SO_PASSCRED:
optname = SO_PASSCRED;
goto int_case;
case TARGET_SO_TIMESTAMP:
optname = SO_TIMESTAMP;
goto int_case;
case TARGET_SO_RCVLOWAT:
optname = SO_RCVLOWAT;
goto int_case;
default:
goto int_case;
}
break;
case SOL_TCP:
/* TCP options all take an 'int' value. */
int_case:
if (get_user_u32(len, optlen))
return -TARGET_EFAULT;
if (len < 0)
return -TARGET_EINVAL;
lv = sizeof(lv);
ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
if (ret < 0)
return ret;
if (len > lv)
len = lv;
if (len == 4) {
if (put_user_u32(val, optval_addr))
return -TARGET_EFAULT;
} else {
if (put_user_u8(val, optval_addr))
return -TARGET_EFAULT;
}
if (put_user_u32(len, optlen))
return -TARGET_EFAULT;
break;
case SOL_IP:
switch(optname) {
case IP_TOS:
case IP_TTL:
case IP_HDRINCL:
case IP_ROUTER_ALERT:
case IP_RECVOPTS:
case IP_RETOPTS:
case IP_PKTINFO:
case IP_MTU_DISCOVER:
case IP_RECVERR:
case IP_RECVTOS:
#ifdef IP_FREEBIND
case IP_FREEBIND:
#endif
case IP_MULTICAST_TTL:
case IP_MULTICAST_LOOP:
if (get_user_u32(len, optlen))
return -TARGET_EFAULT;
if (len < 0)
return -TARGET_EINVAL;
lv = sizeof(lv);
ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
if (ret < 0)
return ret;
if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
len = 1;
if (put_user_u32(len, optlen)
|| put_user_u8(val, optval_addr))
return -TARGET_EFAULT;
} else {
if (len > sizeof(int))
len = sizeof(int);
if (put_user_u32(len, optlen)
|| put_user_u32(val, optval_addr))
return -TARGET_EFAULT;
}
break;
default:
ret = -TARGET_ENOPROTOOPT;
break;
}
break;
default:
unimplemented:
gemu_log("getsockopt level=%d optname=%d not yet supported\n",
level, optname);
ret = -TARGET_EOPNOTSUPP;
break;
}
return ret;
}
static struct iovec *lock_iovec(int type, abi_ulong target_addr,
int count, int copy)
{
struct target_iovec *target_vec;
struct iovec *vec;
abi_ulong total_len, max_len;
int i;
int err = 0;
if (count == 0) {
errno = 0;
return NULL;
}
if (count < 0 || count > IOV_MAX) {
errno = EINVAL;
return NULL;
}
vec = calloc(count, sizeof(struct iovec));
if (vec == NULL) {
errno = ENOMEM;
return NULL;
}
target_vec = lock_user(VERIFY_READ, target_addr,
count * sizeof(struct target_iovec), 1);
if (target_vec == NULL) {
err = EFAULT;
goto fail2;
}
/* ??? If host page size > target page size, this will result in a
value larger than what we can actually support. */
max_len = 0x7fffffff & TARGET_PAGE_MASK;
total_len = 0;
for (i = 0; i < count; i++) {
abi_ulong base = tswapal(target_vec[i].iov_base);
abi_long len = tswapal(target_vec[i].iov_len);
if (len < 0) {
err = EINVAL;
goto fail;
} else if (len == 0) {
/* Zero length pointer is ignored. */
vec[i].iov_base = 0;
} else {
vec[i].iov_base = lock_user(type, base, len, copy);
if (!vec[i].iov_base) {
err = EFAULT;
goto fail;
}
if (len > max_len - total_len) {
len = max_len - total_len;
}
}
vec[i].iov_len = len;
total_len += len;
}
unlock_user(target_vec, target_addr, 0);
return vec;
fail:
unlock_user(target_vec, target_addr, 0);
fail2:
free(vec);
errno = err;
return NULL;
}
static void unlock_iovec(struct iovec *vec, abi_ulong target_addr,
int count, int copy)
{
struct target_iovec *target_vec;
int i;
target_vec = lock_user(VERIFY_READ, target_addr,
count * sizeof(struct target_iovec), 1);
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);
if (len < 0) {
break;
}
unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0);
}
unlock_user(target_vec, target_addr, 0);
}
free(vec);
}
static inline int target_to_host_sock_type(int *type)
{
int host_type = 0;
int target_type = *type;
switch (target_type & TARGET_SOCK_TYPE_MASK) {
case TARGET_SOCK_DGRAM:
host_type = SOCK_DGRAM;
break;
case TARGET_SOCK_STREAM:
host_type = SOCK_STREAM;
break;
default:
host_type = target_type & TARGET_SOCK_TYPE_MASK;
break;
}
if (target_type & TARGET_SOCK_CLOEXEC) {
#if defined(SOCK_CLOEXEC)
host_type |= SOCK_CLOEXEC;
#else
return -TARGET_EINVAL;
#endif
}
if (target_type & TARGET_SOCK_NONBLOCK) {
#if defined(SOCK_NONBLOCK)
host_type |= SOCK_NONBLOCK;
#elif !defined(O_NONBLOCK)
return -TARGET_EINVAL;
#endif
}
*type = host_type;
return 0;
}
/* Try to emulate socket type flags after socket creation. */
static int sock_flags_fixup(int fd, int target_type)
{
#if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK)
if (target_type & TARGET_SOCK_NONBLOCK) {
int flags = fcntl(fd, F_GETFL);
if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) {
close(fd);
return -TARGET_EINVAL;
}
}
#endif
return fd;
}
/* do_socket() Must return target values and target errnos. */
static abi_long do_socket(int domain, int type, int protocol)
{
int target_type = type;
int ret;
ret = target_to_host_sock_type(&type);
if (ret) {
return ret;
}
if (domain == PF_NETLINK)
return -EAFNOSUPPORT; /* do not NETLINK socket connections possible */
ret = get_errno(socket(domain, type, protocol));
if (ret >= 0) {
ret = sock_flags_fixup(ret, target_type);
}
return ret;
}
/* do_bind() Must return target values and target errnos. */
static abi_long do_bind(int sockfd, abi_ulong target_addr,
socklen_t addrlen)
{
void *addr;
abi_long ret;
if ((int)addrlen < 0) {
return -TARGET_EINVAL;
}
addr = alloca(addrlen+1);
ret = target_to_host_sockaddr(addr, target_addr, addrlen);
if (ret)
return ret;
return get_errno(bind(sockfd, addr, addrlen));
}
/* do_connect() Must return target values and target errnos. */
static abi_long do_connect(int sockfd, abi_ulong target_addr,
socklen_t addrlen)
{
void *addr;
abi_long ret;
if ((int)addrlen < 0) {
return -TARGET_EINVAL;
}
addr = alloca(addrlen);
ret = target_to_host_sockaddr(addr, target_addr, addrlen);
if (ret)
return ret;
return get_errno(connect(sockfd, addr, addrlen));
}
/* do_sendrecvmsg_locked() Must return target values and target errnos. */
static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp,
int flags, int send)
{
abi_long ret, len;
struct msghdr msg;
int count;
struct iovec *vec;
abi_ulong target_vec;
if (msgp->msg_name) {
msg.msg_namelen = tswap32(msgp->msg_namelen);
msg.msg_name = alloca(msg.msg_namelen);
ret = target_to_host_sockaddr(msg.msg_name, tswapal(msgp->msg_name),
msg.msg_namelen);
if (ret) {
goto out2;
}
} else {
msg.msg_name = NULL;
msg.msg_namelen = 0;
}
msg.msg_controllen = 2 * tswapal(msgp->msg_controllen);
msg.msg_control = alloca(msg.msg_controllen);
msg.msg_flags = tswap32(msgp->msg_flags);
count = tswapal(msgp->msg_iovlen);
target_vec = tswapal(msgp->msg_iov);
vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE,
target_vec, count, send);
if (vec == NULL) {
ret = -host_to_target_errno(errno);
goto out2;
}
msg.msg_iovlen = count;
msg.msg_iov = vec;
if (send) {
ret = target_to_host_cmsg(&msg, msgp);
if (ret == 0)
ret = get_errno(sendmsg(fd, &msg, flags));
} else {
ret = get_errno(recvmsg(fd, &msg, flags));
if (!is_error(ret)) {
len = ret;
ret = host_to_target_cmsg(msgp, &msg);
if (!is_error(ret)) {
msgp->msg_namelen = tswap32(msg.msg_namelen);
if (msg.msg_name != NULL) {
ret = host_to_target_sockaddr(tswapal(msgp->msg_name),
msg.msg_name, msg.msg_namelen);
if (ret) {
goto out;
}
}
ret = len;
}
}
}
out:
unlock_iovec(vec, target_vec, count, !send);
out2:
return ret;
}
static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg,
int flags, int send)
{
abi_long ret;
struct target_msghdr *msgp;
if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE,
msgp,
target_msg,
send ? 1 : 0)) {
return -TARGET_EFAULT;
}
ret = do_sendrecvmsg_locked(fd, msgp, flags, send);
unlock_user_struct(msgp, target_msg, send ? 0 : 1);
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.
*/
#ifndef MSG_WAITFORONE
#define MSG_WAITFORONE 0x10000
#endif
static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec,
unsigned int vlen, unsigned int flags,
int send)
{
struct target_mmsghdr *mmsgp;
abi_long ret = 0;
int i;
if (vlen > UIO_MAXIOV) {
vlen = UIO_MAXIOV;
}
mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1);
if (!mmsgp) {
return -TARGET_EFAULT;
}
for (i = 0; i < vlen; i++) {
ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send);
if (is_error(ret)) {
break;
}
mmsgp[i].msg_len = tswap32(ret);
/* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */
if (flags & MSG_WAITFORONE) {
flags |= MSG_DONTWAIT;
}
}
unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i);
/* Return number of datagrams sent if we sent any at all;
* otherwise return the error.
*/
if (i) {
return i;
}
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
* pass a non-zero flags argument in this config.
*/
#ifndef CONFIG_ACCEPT4
static inline int accept4(int sockfd, struct sockaddr *addr,
socklen_t *addrlen, int flags)
{
assert(flags == 0);
return accept(sockfd, addr, addrlen);
}
#endif
/* do_accept4() Must return target values and target errnos. */
static abi_long do_accept4(int fd, abi_ulong target_addr,
abi_ulong target_addrlen_addr, int flags)
{
socklen_t addrlen;
void *addr;
abi_long ret;
int host_flags;
host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl);
if (target_addr == 0) {
return get_errno(accept4(fd, NULL, NULL, host_flags));
}
/* linux returns EINVAL if addrlen pointer is invalid */
if (get_user_u32(addrlen, target_addrlen_addr))
return -TARGET_EINVAL;
if ((int)addrlen < 0) {
return -TARGET_EINVAL;
}
if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
return -TARGET_EINVAL;
addr = alloca(addrlen);
ret = get_errno(accept4(fd, addr, &addrlen, host_flags));
if (!is_error(ret)) {
host_to_target_sockaddr(target_addr, addr, addrlen);
if (put_user_u32(addrlen, target_addrlen_addr))
ret = -TARGET_EFAULT;
}
return ret;
}
/* do_getpeername() Must return target values and target errnos. */
static abi_long do_getpeername(int fd, abi_ulong target_addr,
abi_ulong target_addrlen_addr)
{
socklen_t addrlen;
void *addr;
abi_long ret;
if (get_user_u32(addrlen, target_addrlen_addr))
return -TARGET_EFAULT;
if ((int)addrlen < 0) {
return -TARGET_EINVAL;
}
if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
return -TARGET_EFAULT;
addr = alloca(addrlen);
ret = get_errno(getpeername(fd, addr, &addrlen));
if (!is_error(ret)) {
host_to_target_sockaddr(target_addr, addr, addrlen);
if (put_user_u32(addrlen, target_addrlen_addr))
ret = -TARGET_EFAULT;
}
return ret;
}
/* do_getsockname() Must return target values and target errnos. */
static abi_long do_getsockname(int fd, abi_ulong target_addr,
abi_ulong target_addrlen_addr)
{
socklen_t addrlen;
void *addr;
abi_long ret;
if (get_user_u32(addrlen, target_addrlen_addr))
return -TARGET_EFAULT;
if ((int)addrlen < 0) {
return -TARGET_EINVAL;
}
if (!access_ok(VERIFY_WRITE, target_addr, addrlen))
return -TARGET_EFAULT;
addr = alloca(addrlen);
ret = get_errno(getsockname(fd, addr, &addrlen));
if (!is_error(ret)) {
host_to_target_sockaddr(target_addr, addr, addrlen);
if (put_user_u32(addrlen, target_addrlen_addr))
ret = -TARGET_EFAULT;
}
return ret;
}
/* do_socketpair() Must return target values and target errnos. */
static abi_long do_socketpair(int domain, int type, int protocol,
abi_ulong target_tab_addr)
{
int tab[2];
abi_long ret;
target_to_host_sock_type(&type);
ret = get_errno(socketpair(domain, type, protocol, tab));
if (!is_error(ret)) {
if (put_user_s32(tab[0], target_tab_addr)
|| put_user_s32(tab[1], target_tab_addr + sizeof(tab[0])))
ret = -TARGET_EFAULT;
}
return ret;
}
/* do_sendto() Must return target values and target errnos. */
static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags,
abi_ulong target_addr, socklen_t addrlen)
{
void *addr;
void *host_msg;
abi_long ret;
if ((int)addrlen < 0) {
return -TARGET_EINVAL;
}
host_msg = lock_user(VERIFY_READ, msg, len, 1);
if (!host_msg)
return -TARGET_EFAULT;
if (target_addr) {
addr = alloca(addrlen);
ret = target_to_host_sockaddr(addr, target_addr, addrlen);
if (ret) {
unlock_user(host_msg, msg, 0);
return ret;
}
ret = get_errno(sendto(fd, host_msg, len, flags, addr, addrlen));
} else {
ret = get_errno(send(fd, host_msg, len, flags));
}
unlock_user(host_msg, msg, 0);
return ret;
}
/* do_recvfrom() Must return target values and target errnos. */
static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags,
abi_ulong target_addr,
abi_ulong target_addrlen)
{
socklen_t addrlen;
void *addr;
void *host_msg;
abi_long ret;
host_msg = lock_user(VERIFY_WRITE, msg, len, 0);
if (!host_msg)
return -TARGET_EFAULT;
if (target_addr) {
if (get_user_u32(addrlen, target_addrlen)) {
ret = -TARGET_EFAULT;
goto fail;
}
if ((int)addrlen < 0) {
ret = -TARGET_EINVAL;
goto fail;
}
addr = alloca(addrlen);
ret = get_errno(recvfrom(fd, host_msg, len, flags, addr, &addrlen));
} else {
addr = NULL; /* To keep compiler quiet. */
ret = get_errno(qemu_recv(fd, host_msg, len, flags));
}
if (!is_error(ret)) {
if (target_addr) {
host_to_target_sockaddr(target_addr, addr, addrlen);
if (put_user_u32(addrlen, target_addrlen)) {
ret = -TARGET_EFAULT;
goto fail;
}
}
unlock_user(host_msg, msg, len);
} else {
fail:
unlock_user(host_msg, msg, 0);
}
return ret;
}
#ifdef TARGET_NR_socketcall
/* do_socketcall() Must return target values and target errnos. */
static abi_long do_socketcall(int num, abi_ulong vptr)
{
static const unsigned ac[] = { /* number of arguments per call */
[SOCKOP_socket] = 3, /* domain, type, protocol */
[SOCKOP_bind] = 3, /* sockfd, addr, addrlen */
[SOCKOP_connect] = 3, /* sockfd, addr, addrlen */
[SOCKOP_listen] = 2, /* sockfd, backlog */
[SOCKOP_accept] = 3, /* sockfd, addr, addrlen */
[SOCKOP_accept4] = 4, /* sockfd, addr, addrlen, flags */
[SOCKOP_getsockname] = 3, /* sockfd, addr, addrlen */
[SOCKOP_getpeername] = 3, /* sockfd, addr, addrlen */
[SOCKOP_socketpair] = 4, /* domain, type, protocol, tab */
[SOCKOP_send] = 4, /* sockfd, msg, len, flags */
[SOCKOP_recv] = 4, /* sockfd, msg, len, flags */
[SOCKOP_sendto] = 6, /* sockfd, msg, len, flags, addr, addrlen */
[SOCKOP_recvfrom] = 6, /* sockfd, msg, len, flags, addr, addrlen */
[SOCKOP_shutdown] = 2, /* sockfd, how */
[SOCKOP_sendmsg] = 3, /* sockfd, msg, flags */
[SOCKOP_recvmsg] = 3, /* sockfd, msg, flags */
[SOCKOP_setsockopt] = 5, /* sockfd, level, optname, optval, optlen */
[SOCKOP_getsockopt] = 5, /* sockfd, level, optname, optval, optlen */
};
abi_long a[6]; /* max 6 args */
/* first, collect the arguments in a[] according to ac[] */
if (num >= 0 && num < ARRAY_SIZE(ac)) {
unsigned i;
assert(ARRAY_SIZE(a) >= ac[num]); /* ensure we have space for args */
for (i = 0; i < ac[num]; ++i) {
if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) {
return -TARGET_EFAULT;
}
}
}
/* now when we have the args, actually handle the call */
switch (num) {
case SOCKOP_socket: /* domain, type, protocol */
return do_socket(a[0], a[1], a[2]);
case SOCKOP_bind: /* sockfd, addr, addrlen */
return do_bind(a[0], a[1], a[2]);
case SOCKOP_connect: /* sockfd, addr, addrlen */
return do_connect(a[0], a[1], a[2]);
case SOCKOP_listen: /* sockfd, backlog */
return get_errno(listen(a[0], a[1]));
case SOCKOP_accept: /* sockfd, addr, addrlen */
return do_accept4(a[0], a[1], a[2], 0);
case SOCKOP_accept4: /* sockfd, addr, addrlen, flags */
return do_accept4(a[0], a[1], a[2], a[3]);
case SOCKOP_getsockname: /* sockfd, addr, addrlen */
return do_getsockname(a[0], a[1], a[2]);
case SOCKOP_getpeername: /* sockfd, addr, addrlen */
return do_getpeername(a[0], a[1], a[2]);
case SOCKOP_socketpair: /* domain, type, protocol, tab */
return do_socketpair(a[0], a[1], a[2], a[3]);
case SOCKOP_send: /* sockfd, msg, len, flags */
return do_sendto(a[0], a[1], a[2], a[3], 0, 0);
case SOCKOP_recv: /* sockfd, msg, len, flags */
return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0);
case SOCKOP_sendto: /* sockfd, msg, len, flags, addr, addrlen */
return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]);
case SOCKOP_recvfrom: /* sockfd, msg, len, flags, addr, addrlen */
return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]);
case SOCKOP_shutdown: /* sockfd, how */
return get_errno(shutdown(a[0], a[1]));
case SOCKOP_sendmsg: /* sockfd, msg, flags */
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_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 */
return do_getsockopt(a[0], a[1], a[2], a[3], a[4]);
default:
gemu_log("Unsupported socketcall: %d\n", num);
return -TARGET_ENOSYS;
}
}
#endif
#define N_SHM_REGIONS 32
static struct shm_region {
abi_ulong start;
abi_ulong size;
} shm_regions[N_SHM_REGIONS];
struct target_semid_ds
{
struct target_ipc_perm sem_perm;
abi_ulong sem_otime;
abi_ulong __unused1;
abi_ulong sem_ctime;
abi_ulong __unused2;
abi_ulong sem_nsems;
abi_ulong __unused3;
abi_ulong __unused4;
};
static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip,
abi_ulong target_addr)
{
struct target_ipc_perm *target_ip;
struct target_semid_ds *target_sd;
if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
return -TARGET_EFAULT;
target_ip = &(target_sd->sem_perm);
host_ip->__key = tswap32(target_ip->__key);
host_ip->uid = tswap32(target_ip->uid);
host_ip->gid = tswap32(target_ip->gid);
host_ip->cuid = tswap32(target_ip->cuid);
host_ip->cgid = tswap32(target_ip->cgid);
#if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
host_ip->mode = tswap32(target_ip->mode);
#else
host_ip->mode = tswap16(target_ip->mode);
#endif
#if defined(TARGET_PPC)
host_ip->__seq = tswap32(target_ip->__seq);
#else
host_ip->__seq = tswap16(target_ip->__seq);
#endif
unlock_user_struct(target_sd, target_addr, 0);
return 0;
}
static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr,
struct ipc_perm *host_ip)
{
struct target_ipc_perm *target_ip;
struct target_semid_ds *target_sd;
if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
return -TARGET_EFAULT;
target_ip = &(target_sd->sem_perm);
target_ip->__key = tswap32(host_ip->__key);
target_ip->uid = tswap32(host_ip->uid);
target_ip->gid = tswap32(host_ip->gid);
target_ip->cuid = tswap32(host_ip->cuid);
target_ip->cgid = tswap32(host_ip->cgid);
#if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC)
target_ip->mode = tswap32(host_ip->mode);
#else
target_ip->mode = tswap16(host_ip->mode);
#endif
#if defined(TARGET_PPC)
target_ip->__seq = tswap32(host_ip->__seq);
#else
target_ip->__seq = tswap16(host_ip->__seq);
#endif
unlock_user_struct(target_sd, target_addr, 1);
return 0;
}
static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd,
abi_ulong target_addr)
{
struct target_semid_ds *target_sd;
if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1))
return -TARGET_EFAULT;
if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr))
return -TARGET_EFAULT;
host_sd->sem_nsems = tswapal(target_sd->sem_nsems);
host_sd->sem_otime = tswapal(target_sd->sem_otime);
host_sd->sem_ctime = tswapal(target_sd->sem_ctime);
unlock_user_struct(target_sd, target_addr, 0);
return 0;
}
static inline abi_long host_to_target_semid_ds(abi_ulong target_addr,
struct semid_ds *host_sd)
{
struct target_semid_ds *target_sd;
if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0))
return -TARGET_EFAULT;
if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm)))
return -TARGET_EFAULT;
target_sd->sem_nsems = tswapal(host_sd->sem_nsems);
target_sd->sem_otime = tswapal(host_sd->sem_otime);
target_sd->sem_ctime = tswapal(host_sd->sem_ctime);
unlock_user_struct(target_sd, target_addr, 1);
return 0;
}
struct target_seminfo {
int semmap;
int semmni;
int semmns;
int semmnu;
int semmsl;
int semopm;
int semume;
int semusz;
int semvmx;
int semaem;
};
static inline abi_long host_to_target_seminfo(abi_ulong target_addr,
struct seminfo *host_seminfo)
{
struct target_seminfo *target_seminfo;
if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0))
return -TARGET_EFAULT;
__put_user(host_seminfo->semmap, &target_seminfo->semmap);
__put_user(host_seminfo->semmni, &target_seminfo->semmni);
__put_user(host_seminfo->semmns, &target_seminfo->semmns);
__put_user(host_seminfo->semmnu, &target_seminfo->semmnu);
__put_user(host_seminfo->semmsl, &target_seminfo->semmsl);
__put_user(host_seminfo->semopm, &target_seminfo->semopm);
__put_user(host_seminfo->semume, &target_seminfo->semume);
__put_user(host_seminfo->semusz, &target_seminfo->semusz);
__put_user(host_seminfo->semvmx, &target_seminfo->semvmx);
__put_user(host_seminfo->semaem, &target_seminfo->semaem);
unlock_user_struct(target_seminfo, target_addr, 1);
return 0;
}
union semun {
int val;
struct semid_ds *buf;
unsigned short *array;
struct seminfo *__buf;
};
union target_semun {
int val;
abi_ulong buf;
abi_ulong array;
abi_ulong __buf;
};
static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array,
abi_ulong target_addr)
{
int nsems;
unsigned short *array;
union semun semun;
struct semid_ds semid_ds;
int i, ret;
semun.buf = &semid_ds;
ret = semctl(semid, 0, IPC_STAT, semun);
if (ret == -1)
return get_errno(ret);
nsems = semid_ds.sem_nsems;
*host_array = malloc(nsems*sizeof(unsigned short));
if (!*host_array) {
return -TARGET_ENOMEM;
}
array = lock_user(VERIFY_READ, target_addr,
nsems*sizeof(unsigned short), 1);
if (!array) {
free(*host_array);
return -TARGET_EFAULT;
}
for(i=0; i<nsems; i++) {
__get_user((*host_array)[i], &array[i]);
}
unlock_user(array, target_addr, 0);
return 0;
}
static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr,
unsigned short **host_array)
{
int nsems;
unsigned short *array;
union semun semun;
struct semid_ds semid_ds;
int i, ret;
semun.buf = &semid_ds;
ret = semctl(semid, 0, IPC_STAT, semun);
if (ret == -1)
return get_errno(ret);
nsems = semid_ds.sem_nsems;
array = lock_user(VERIFY_WRITE, target_addr,
nsems*sizeof(unsigned short), 0);
if (!array)
return -TARGET_EFAULT;
for(i=0; i<nsems; i++) {
__put_user((*host_array)[i], &array[i]);
}
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)
{
union semun arg;
struct semid_ds dsarg;
unsigned short *array = NULL;
struct seminfo seminfo;
abi_long ret = -TARGET_EINVAL;
abi_long err;
cmd &= 0xff;
switch( cmd ) {
case GETVAL:
case SETVAL:
arg.val = tswap32(target_su.val);
ret = get_errno(semctl(semid, semnum, cmd, arg));
target_su.val = tswap32(arg.val);
break;
case GETALL:
case SETALL:
err = target_to_host_semarray(semid, &array, target_su.array);
if (err)
return err;
arg.array = array;
ret = get_errno(semctl(semid, semnum, cmd, arg));
err = host_to_target_semarray(semid, target_su.array, &array);
if (err)
return err;
break;
case IPC_STAT:
case IPC_SET:
case SEM_STAT:
err = target_to_host_semid_ds(&dsarg, target_su.buf);
if (err)
return err;
arg.buf = &dsarg;
ret = get_errno(semctl(semid, semnum, cmd, arg));
err = host_to_target_semid_ds(target_su.buf, &dsarg);
if (err)
return err;
break;
case IPC_INFO:
case SEM_INFO:
arg.__buf = &seminfo;
ret = get_errno(semctl(semid, semnum, cmd, arg));
err = host_to_target_seminfo(target_su.__buf, &seminfo);
if (err)
return err;
break;
case IPC_RMID:
case GETPID:
case GETNCNT:
case GETZCNT:
ret = get_errno(semctl(semid, semnum, cmd, NULL));
break;
}
return ret;
}
struct target_sembuf {
unsigned short sem_num;
short sem_op;
short sem_flg;
};
static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf,
abi_ulong target_addr,
unsigned nsops)
{
struct target_sembuf *target_sembuf;
int i;
target_sembuf = lock_user(VERIFY_READ, target_addr,
nsops*sizeof(struct target_sembuf), 1);
if (!target_sembuf)
return -TARGET_EFAULT;
for(i=0; i<nsops; i++) {
__get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num);
__get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op);
__get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg);
}
unlock_user(target_sembuf, target_addr, 0);
return 0;
}
static inline abi_long do_semop(int semid, abi_long ptr, unsigned nsops)
{
struct sembuf sops[nsops];
if (target_to_host_sembuf(sops, ptr, nsops))
return -TARGET_EFAULT;
return get_errno(semop(semid, sops, nsops));
}
struct target_msqid_ds
{
struct target_ipc_perm msg_perm;
abi_ulong msg_stime;
#if TARGET_ABI_BITS == 32
abi_ulong __unused1;
#endif
abi_ulong msg_rtime;
#if TARGET_ABI_BITS == 32
abi_ulong __unused2;
#endif
abi_ulong msg_ctime;
#if TARGET_ABI_BITS == 32
abi_ulong __unused3;
#endif
abi_ulong __msg_cbytes;
abi_ulong msg_qnum;
abi_ulong msg_qbytes;
abi_ulong msg_lspid;
abi_ulong msg_lrpid;
abi_ulong __unused4;
abi_ulong __unused5;
};
static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md,
abi_ulong target_addr)
{
struct target_msqid_ds *target_md;
if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1))
return -TARGET_EFAULT;
if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr))
return -TARGET_EFAULT;
host_md->