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586314f2aa
qemu/linux-user/syscall.c
bellard 72f0390014 suppressed clashes 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@8 c046a42c-6fe2-441c-8c8c-71466251a162
2003-02-18 23:33:18 +00:00

1361 lines
42 KiB
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/*
* 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <elf.h>
#include <endian.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <sys/resource.h>
#include <sys/mman.h>
#include <sys/swap.h>
#include <signal.h>
#include <sched.h>
#include <sys/socket.h>
#include <sys/uio.h>
//#include <sys/user.h>
#define termios host_termios
#define winsize host_winsize
#define termio host_termio
#include <linux/termios.h>
#include <linux/unistd.h>
#include <linux/utsname.h>
#include <linux/cdrom.h>
#include <linux/hdreg.h>
#include <linux/soundcard.h>
#include "gemu.h"
//#define DEBUG
#ifndef PAGE_SIZE
#define PAGE_SIZE 4096
#define PAGE_MASK ~(PAGE_SIZE - 1)
#endif
struct dirent {
long d_ino;
long d_off;
unsigned short d_reclen;
char d_name[256]; /* We must not include limits.h! */
};
#include "syscall_defs.h"
#ifdef TARGET_I386
#include "syscall-i386.h"
#endif
#define __NR_sys_uname __NR_uname
#define __NR_sys_getcwd1 __NR_getcwd
#define __NR_sys_statfs __NR_statfs
#define __NR_sys_fstatfs __NR_fstatfs
#define __NR_sys_getdents __NR_getdents
#ifdef __NR_gettid
_syscall0(int, gettid)
#else
static int gettid(void) {
return -ENOSYS;
}
#endif
_syscall1(int,sys_uname,struct new_utsname *,buf)
_syscall2(int,sys_getcwd1,char *,buf,size_t,size)
_syscall3(int, sys_getdents, uint, fd, struct dirent *, dirp, uint, count);
_syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
loff_t *, res, uint, wh);
_syscall2(int,sys_statfs,const char *,path,struct kernel_statfs *,buf)
_syscall2(int,sys_fstatfs,int,fd,struct kernel_statfs *,buf)
static inline long get_errno(long ret)
{
if (ret == -1)
return -errno;
else
return ret;
}
static inline int is_error(long ret)
{
return (unsigned long)ret >= (unsigned long)(-4096);
}
static char *target_brk;
static char *target_original_brk;
void target_set_brk(char *new_brk)
{
target_brk = new_brk;
target_original_brk = new_brk;
}
static long do_brk(char *new_brk)
{
char *brk_page;
long mapped_addr;
int new_alloc_size;
if (!new_brk)
return (long)target_brk;
if (new_brk < target_original_brk)
return -ENOMEM;
brk_page = (char *)(((unsigned long)target_brk + PAGE_SIZE - 1) & PAGE_MASK);
/* If the new brk is less than this, set it and we're done... */
if (new_brk < brk_page) {
target_brk = new_brk;
return (long)target_brk;
}
/* We need to allocate more memory after the brk... */
new_alloc_size = ((new_brk - brk_page + 1)+(PAGE_SIZE-1)) & PAGE_MASK;
mapped_addr = get_errno((long)mmap((caddr_t)brk_page, new_alloc_size,
PROT_READ|PROT_WRITE,
MAP_ANON|MAP_FIXED|MAP_PRIVATE, 0, 0));
if (is_error(mapped_addr)) {
return mapped_addr;
} else {
target_brk = new_brk;
return (long)target_brk;
}
}
static inline fd_set *target_to_host_fds(fd_set *fds,
target_long *target_fds, int n)
{
#if !defined(BSWP_NEEDED) && !defined(WORD_BIGENDIAN)
return (fd_set *)target_fds;
#else
int i, b;
if (target_fds) {
FD_ZERO(fds);
for(i = 0;i < n; i++) {
b = (tswapl(target_fds[i / TARGET_LONG_BITS]) >>
(i & (TARGET_LONG_BITS - 1))) & 1;
if (b)
FD_SET(i, fds);
}
return fds;
} else {
return NULL;
}
#endif
}
static inline void host_to_target_fds(target_long *target_fds,
fd_set *fds, int n)
{
#if !defined(BSWP_NEEDED) && !defined(WORD_BIGENDIAN)
/* nothing to do */
#else
int i, nw, j, k;
target_long v;
if (target_fds) {
nw = n / TARGET_LONG_BITS;
k = 0;
for(i = 0;i < nw; i++) {
v = 0;
for(j = 0; j < TARGET_LONG_BITS; j++) {
v |= ((FD_ISSET(k, fds) != 0) << j);
k++;
}
target_fds[i] = tswapl(v);
}
}
#endif
}
/* XXX: incorrect for some archs */
static void host_to_target_old_sigset(target_ulong *old_sigset,
const sigset_t *sigset)
{
*old_sigset = tswap32(*(unsigned long *)sigset & 0xffffffff);
}
static void target_to_host_old_sigset(sigset_t *sigset,
const target_ulong *old_sigset)
{
sigemptyset(sigset);
*(unsigned long *)sigset = tswapl(*old_sigset);
}
static long do_select(long n,
target_long *target_rfds, target_long *target_wfds,
target_long *target_efds, struct target_timeval *target_tv)
{
fd_set rfds, wfds, efds;
fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
struct timeval tv, *tv_ptr;
long ret;
rfds_ptr = target_to_host_fds(&rfds, target_rfds, n);
wfds_ptr = target_to_host_fds(&wfds, target_wfds, n);
efds_ptr = target_to_host_fds(&efds, target_efds, n);
if (target_tv) {
tv.tv_sec = tswapl(target_tv->tv_sec);
tv.tv_usec = tswapl(target_tv->tv_usec);
tv_ptr = &tv;
} else {
tv_ptr = NULL;
}
ret = get_errno(select(n, rfds_ptr, wfds_ptr, efds_ptr, tv_ptr));
if (!is_error(ret)) {
host_to_target_fds(target_rfds, rfds_ptr, n);
host_to_target_fds(target_wfds, wfds_ptr, n);
host_to_target_fds(target_efds, efds_ptr, n);
if (target_tv) {
target_tv->tv_sec = tswapl(tv.tv_sec);
target_tv->tv_usec = tswapl(tv.tv_usec);
}
}
return ret;
}
static long do_socketcall(int num, long *vptr)
{
long ret;
switch(num) {
case SOCKOP_socket:
ret = get_errno(socket(vptr[0], vptr[1], vptr[2]));
break;
case SOCKOP_bind:
ret = get_errno(bind(vptr[0], (struct sockaddr *)vptr[1], vptr[2]));
break;
case SOCKOP_connect:
ret = get_errno(connect(vptr[0], (struct sockaddr *)vptr[1], vptr[2]));
break;
case SOCKOP_listen:
ret = get_errno(listen(vptr[0], vptr[1]));
break;
case SOCKOP_accept:
{
socklen_t size;
size = tswap32(*(int32_t *)vptr[2]);
ret = get_errno(accept(vptr[0], (struct sockaddr *)vptr[1], &size));
if (!is_error(ret))
*(int32_t *)vptr[2] = size;
}
break;
case SOCKOP_getsockname:
{
socklen_t size;
size = tswap32(*(int32_t *)vptr[2]);
ret = get_errno(getsockname(vptr[0], (struct sockaddr *)vptr[1], &size));
if (!is_error(ret))
*(int32_t *)vptr[2] = size;
}
break;
case SOCKOP_getpeername:
{
socklen_t size;
size = tswap32(*(int32_t *)vptr[2]);
ret = get_errno(getpeername(vptr[0], (struct sockaddr *)vptr[1], &size));
if (!is_error(ret))
*(int32_t *)vptr[2] = size;
}
break;
case SOCKOP_socketpair:
{
int tab[2];
int32_t *target_tab = (int32_t *)vptr[3];
ret = get_errno(socketpair(vptr[0], vptr[1], vptr[2], tab));
if (!is_error(ret)) {
target_tab[0] = tswap32(tab[0]);
target_tab[1] = tswap32(tab[1]);
}
}
break;
case SOCKOP_send:
ret = get_errno(send(vptr[0], (void *)vptr[1], vptr[2], vptr[3]));
break;
case SOCKOP_recv:
ret = get_errno(recv(vptr[0], (void *)vptr[1], vptr[2], vptr[3]));
break;
case SOCKOP_sendto:
ret = get_errno(sendto(vptr[0], (void *)vptr[1], vptr[2], vptr[3],
(struct sockaddr *)vptr[4], vptr[5]));
break;
case SOCKOP_recvfrom:
{
socklen_t size;
size = tswap32(*(int32_t *)vptr[5]);
ret = get_errno(recvfrom(vptr[0], (void *)vptr[1], vptr[2],
vptr[3], (struct sockaddr *)vptr[4], &size));
if (!is_error(ret))
*(int32_t *)vptr[5] = size;
}
break;
case SOCKOP_shutdown:
ret = get_errno(shutdown(vptr[0], vptr[1]));
break;
case SOCKOP_sendmsg:
case SOCKOP_recvmsg:
case SOCKOP_setsockopt:
case SOCKOP_getsockopt:
default:
gemu_log("Unsupported socketcall: %d\n", num);
ret = -ENOSYS;
break;
}
return ret;
}
/* kernel structure types definitions */
#define IFNAMSIZ 16
#define STRUCT(name, list...) STRUCT_ ## name,
#define STRUCT_SPECIAL(name) STRUCT_ ## name,
enum {
#include "syscall_types.h"
};
#undef STRUCT
#undef STRUCT_SPECIAL
#define STRUCT(name, list...) const argtype struct_ ## name ## _def[] = { list, TYPE_NULL };
#define STRUCT_SPECIAL(name)
#include "syscall_types.h"
#undef STRUCT
#undef STRUCT_SPECIAL
typedef struct IOCTLEntry {
int target_cmd;
int host_cmd;
const char *name;
int access;
const argtype arg_type[3];
} IOCTLEntry;
#define IOC_R 0x0001
#define IOC_W 0x0002
#define IOC_RW (IOC_R | IOC_W)
#define MAX_STRUCT_SIZE 4096
const IOCTLEntry ioctl_entries[] = {
#define IOCTL(cmd, access, types...) \
{ TARGET_ ## cmd, cmd, #cmd, access, { types } },
#include "ioctls.h"
{ 0, 0, },
};
static long do_ioctl(long fd, long cmd, long arg)
{
const IOCTLEntry *ie;
const argtype *arg_type;
long ret;
uint8_t buf_temp[MAX_STRUCT_SIZE];
ie = ioctl_entries;
for(;;) {
if (ie->target_cmd == 0) {
gemu_log("Unsupported ioctl: cmd=0x%04lx\n", cmd);
return -ENOSYS;
}
if (ie->target_cmd == cmd)
break;
ie++;
}
arg_type = ie->arg_type;
#ifdef DEBUG
gemu_log("ioctl: cmd=0x%04lx (%s)\n", cmd, ie->name);
#endif
switch(arg_type[0]) {
case TYPE_NULL:
/* no argument */
ret = get_errno(ioctl(fd, ie->host_cmd));
break;
case TYPE_PTRVOID:
case TYPE_INT:
/* int argment */
ret = get_errno(ioctl(fd, ie->host_cmd, arg));
break;
case TYPE_PTR:
arg_type++;
switch(ie->access) {
case IOC_R:
ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
if (!is_error(ret)) {
thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
}
break;
case IOC_W:
thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
break;
default:
case IOC_RW:
thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
if (!is_error(ret)) {
thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
}
break;
}
break;
default:
gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", cmd, arg_type[0]);
ret = -ENOSYS;
break;
}
return ret;
}
bitmask_transtbl iflag_tbl[] = {
{ TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
{ TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
{ TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
{ TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
{ TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
{ TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
{ TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
{ TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
{ TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
{ TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
{ TARGET_IXON, TARGET_IXON, IXON, IXON },
{ TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
{ TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
{ TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
{ 0, 0, 0, 0 }
};
bitmask_transtbl oflag_tbl[] = {
{ TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
{ TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
{ TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
{ TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
{ TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
{ TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
{ TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
{ TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
{ TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
{ TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
{ TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
{ TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
{ TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
{ TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
{ TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
{ TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
{ TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
{ TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
{ TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
{ TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
{ TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
{ TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
{ TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
{ TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
{ 0, 0, 0, 0 }
};
bitmask_transtbl cflag_tbl[] = {
{ TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
{ TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
{ TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
{ TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
{ TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
{ TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
{ TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
{ TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
{ TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
{ TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
{ TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
{ TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
{ TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
{ TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
{ TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
{ TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
{ TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
{ TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
{ TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
{ TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
{ TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
{ TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
{ TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
{ TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
{ TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
{ TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
{ TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
{ TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
{ TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
{ TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
{ TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
{ 0, 0, 0, 0 }
};
bitmask_transtbl lflag_tbl[] = {
{ TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
{ TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
{ TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
{ TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
{ TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
{ TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
{ TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
{ TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
{ TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
{ TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
{ TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
{ TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
{ TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
{ TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
{ TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
{ 0, 0, 0, 0 }
};
static void target_to_host_termios (void *dst, const void *src)
{
struct host_termios *host = dst;
const struct target_termios *target = src;
host->c_iflag =
target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
host->c_oflag =
target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
host->c_cflag =
target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
host->c_lflag =
target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
host->c_line = target->c_line;
host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
}
static void host_to_target_termios (void *dst, const void *src)
{
struct target_termios *target = dst;
const struct host_termios *host = src;
target->c_iflag =
tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
target->c_oflag =
tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
target->c_cflag =
tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
target->c_lflag =
tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
target->c_line = host->c_line;
target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
}
StructEntry struct_termios_def = {
.convert = { host_to_target_termios, target_to_host_termios },
.size = { sizeof(struct target_termios), sizeof(struct host_termios) },
.align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
};
void syscall_init(void)
{
#define STRUCT(name, list...) 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"
#undef STRUCT
#undef STRUCT_SPECIAL
}
long do_syscall(int num, long arg1, long arg2, long arg3,
long arg4, long arg5, long arg6)
{
long ret;
struct stat st;
struct kernel_statfs *stfs;
#ifdef DEBUG
gemu_log("syscall %d\n", num);
#endif
switch(num) {
case TARGET_NR_exit:
_exit(arg1);
ret = 0; /* avoid warning */
break;
case TARGET_NR_read:
ret = get_errno(read(arg1, (void *)arg2, arg3));
break;
case TARGET_NR_write:
ret = get_errno(write(arg1, (void *)arg2, arg3));
break;
case TARGET_NR_open:
ret = get_errno(open((const char *)arg1, arg2, arg3));
break;
case TARGET_NR_close:
ret = get_errno(close(arg1));
break;
case TARGET_NR_brk:
ret = do_brk((char *)arg1);
break;
case TARGET_NR_fork:
ret = get_errno(fork());
break;
case TARGET_NR_waitpid:
{
int *status = (int *)arg2;
ret = get_errno(waitpid(arg1, status, arg3));
if (!is_error(ret) && status)
tswapls((long *)&status);
}
break;
case TARGET_NR_creat:
ret = get_errno(creat((const char *)arg1, arg2));
break;
case TARGET_NR_link:
ret = get_errno(link((const char *)arg1, (const char *)arg2));
break;
case TARGET_NR_unlink:
ret = get_errno(unlink((const char *)arg1));
break;
case TARGET_NR_execve:
ret = get_errno(execve((const char *)arg1, (void *)arg2, (void *)arg3));
break;
case TARGET_NR_chdir:
ret = get_errno(chdir((const char *)arg1));
break;
case TARGET_NR_time:
{
int *time_ptr = (int *)arg1;
ret = get_errno(time((time_t *)time_ptr));
if (!is_error(ret) && time_ptr)
tswap32s(time_ptr);
}
break;
case TARGET_NR_mknod:
ret = get_errno(mknod((const char *)arg1, arg2, arg3));
break;
case TARGET_NR_chmod:
ret = get_errno(chmod((const char *)arg1, arg2));
break;
case TARGET_NR_lchown:
ret = get_errno(chown((const char *)arg1, arg2, arg3));
break;
case TARGET_NR_break:
goto unimplemented;
case TARGET_NR_oldstat:
goto unimplemented;
case TARGET_NR_lseek:
ret = get_errno(lseek(arg1, arg2, arg3));
break;
case TARGET_NR_getpid:
ret = get_errno(getpid());
break;
case TARGET_NR_mount:
/* need to look at the data field */
goto unimplemented;
case TARGET_NR_umount:
ret = get_errno(umount((const char *)arg1));
break;
case TARGET_NR_setuid:
ret = get_errno(setuid(arg1));
break;
case TARGET_NR_getuid:
ret = get_errno(getuid());
break;
case TARGET_NR_stime:
{
int *time_ptr = (int *)arg1;
if (time_ptr)
tswap32s(time_ptr);
ret = get_errno(stime((time_t *)time_ptr));
}
break;
case TARGET_NR_ptrace:
goto unimplemented;
case TARGET_NR_alarm:
ret = alarm(arg1);
break;
case TARGET_NR_oldfstat:
goto unimplemented;
case TARGET_NR_pause:
ret = get_errno(pause());
break;
case TARGET_NR_utime:
goto unimplemented;
case TARGET_NR_stty:
goto unimplemented;
case TARGET_NR_gtty:
goto unimplemented;
case TARGET_NR_access:
ret = get_errno(access((const char *)arg1, arg2));
break;
case TARGET_NR_nice:
ret = get_errno(nice(arg1));
break;
case TARGET_NR_ftime:
goto unimplemented;
case TARGET_NR_sync:
ret = get_errno(sync());
break;
case TARGET_NR_kill:
ret = get_errno(kill(arg1, arg2));
break;
case TARGET_NR_rename:
ret = get_errno(rename((const char *)arg1, (const char *)arg2));
break;
case TARGET_NR_mkdir:
ret = get_errno(mkdir((const char *)arg1, arg2));
break;
case TARGET_NR_rmdir:
ret = get_errno(rmdir((const char *)arg1));
break;
case TARGET_NR_dup:
ret = get_errno(dup(arg1));
break;
case TARGET_NR_pipe:
{
int *pipe_ptr = (int *)arg1;
ret = get_errno(pipe(pipe_ptr));
if (!is_error(ret)) {
tswap32s(&pipe_ptr[0]);
tswap32s(&pipe_ptr[1]);
}
}
break;
case TARGET_NR_times:
goto unimplemented;
case TARGET_NR_prof:
goto unimplemented;
case TARGET_NR_setgid:
ret = get_errno(setgid(arg1));
break;
case TARGET_NR_getgid:
ret = get_errno(getgid());
break;
case TARGET_NR_signal:
goto unimplemented;
case TARGET_NR_geteuid:
ret = get_errno(geteuid());
break;
case TARGET_NR_getegid:
ret = get_errno(getegid());
break;
case TARGET_NR_acct:
goto unimplemented;
case TARGET_NR_umount2:
ret = get_errno(umount2((const char *)arg1, arg2));
break;
case TARGET_NR_lock:
goto unimplemented;
case TARGET_NR_ioctl:
ret = do_ioctl(arg1, arg2, arg3);
break;
case TARGET_NR_fcntl:
switch(arg2) {
case F_GETLK:
case F_SETLK:
case F_SETLKW:
goto unimplemented;
default:
ret = get_errno(fcntl(arg1, arg2, arg3));
break;
}
break;
case TARGET_NR_mpx:
goto unimplemented;
case TARGET_NR_setpgid:
ret = get_errno(setpgid(arg1, arg2));
break;
case TARGET_NR_ulimit:
goto unimplemented;
case TARGET_NR_oldolduname:
goto unimplemented;
case TARGET_NR_umask:
ret = get_errno(umask(arg1));
break;
case TARGET_NR_chroot:
ret = get_errno(chroot((const char *)arg1));
break;
case TARGET_NR_ustat:
goto unimplemented;
case TARGET_NR_dup2:
ret = get_errno(dup2(arg1, arg2));
break;
case TARGET_NR_getppid:
ret = get_errno(getppid());
break;
case TARGET_NR_getpgrp:
ret = get_errno(getpgrp());
break;
case TARGET_NR_setsid:
ret = get_errno(setsid());
break;
case TARGET_NR_sigaction:
#if 0
{
int signum = arg1;
struct target_old_sigaction *tact = arg2, *toldact = arg3;
ret = get_errno(setsid());
}
break;
#else
goto unimplemented;
#endif
case TARGET_NR_sgetmask:
goto unimplemented;
case TARGET_NR_ssetmask:
goto unimplemented;
case TARGET_NR_setreuid:
ret = get_errno(setreuid(arg1, arg2));
break;
case TARGET_NR_setregid:
ret = get_errno(setregid(arg1, arg2));
break;
case TARGET_NR_sigsuspend:
goto unimplemented;
case TARGET_NR_sigpending:
goto unimplemented;
case TARGET_NR_sethostname:
ret = get_errno(sethostname((const char *)arg1, arg2));
break;
case TARGET_NR_setrlimit:
goto unimplemented;
case TARGET_NR_getrlimit:
goto unimplemented;
case TARGET_NR_getrusage:
goto unimplemented;
case TARGET_NR_gettimeofday:
{
struct target_timeval *target_tv = (void *)arg1;
struct timeval tv;
ret = get_errno(gettimeofday(&tv, NULL));
if (!is_error(ret)) {
target_tv->tv_sec = tswapl(tv.tv_sec);
target_tv->tv_usec = tswapl(tv.tv_usec);
}
}
break;
case TARGET_NR_settimeofday:
{
struct target_timeval *target_tv = (void *)arg1;
struct timeval tv;
tv.tv_sec = tswapl(target_tv->tv_sec);
tv.tv_usec = tswapl(target_tv->tv_usec);
ret = get_errno(settimeofday(&tv, NULL));
}
break;
case TARGET_NR_getgroups:
goto unimplemented;
case TARGET_NR_setgroups:
goto unimplemented;
case TARGET_NR_select:
goto unimplemented;
case TARGET_NR_symlink:
ret = get_errno(symlink((const char *)arg1, (const char *)arg2));
break;
case TARGET_NR_oldlstat:
goto unimplemented;
case TARGET_NR_readlink:
ret = get_errno(readlink((const char *)arg1, (char *)arg2, arg3));
break;
case TARGET_NR_uselib:
goto unimplemented;
case TARGET_NR_swapon:
ret = get_errno(swapon((const char *)arg1, arg2));
break;
case TARGET_NR_reboot:
goto unimplemented;
case TARGET_NR_readdir:
goto unimplemented;
#ifdef TARGET_I386
case TARGET_NR_mmap:
{
uint32_t v1, v2, v3, v4, v5, v6, *vptr;
vptr = (uint32_t *)arg1;
v1 = tswap32(vptr[0]);
v2 = tswap32(vptr[1]);
v3 = tswap32(vptr[2]);
v4 = tswap32(vptr[3]);
v5 = tswap32(vptr[4]);
v6 = tswap32(vptr[5]);
ret = get_errno((long)mmap((void *)v1, v2, v3, v4, v5, v6));
}
break;
#endif
#ifdef TARGET_I386
case TARGET_NR_mmap2:
#else
case TARGET_NR_mmap:
#endif
ret = get_errno((long)mmap((void *)arg1, arg2, arg3, arg4, arg5, arg6));
break;
case TARGET_NR_munmap:
ret = get_errno(munmap((void *)arg1, arg2));
break;
case TARGET_NR_truncate:
ret = get_errno(truncate((const char *)arg1, arg2));
break;
case TARGET_NR_ftruncate:
ret = get_errno(ftruncate(arg1, arg2));
break;
case TARGET_NR_fchmod:
ret = get_errno(fchmod(arg1, arg2));
break;
case TARGET_NR_fchown:
ret = get_errno(fchown(arg1, arg2, arg3));
break;
case TARGET_NR_getpriority:
ret = get_errno(getpriority(arg1, arg2));
break;
case TARGET_NR_setpriority:
ret = get_errno(setpriority(arg1, arg2, arg3));
break;
case TARGET_NR_profil:
goto unimplemented;
case TARGET_NR_statfs:
stfs = (void *)arg2;
ret = get_errno(sys_statfs((const char *)arg1, stfs));
convert_statfs:
if (!is_error(ret)) {
tswap32s(&stfs->f_type);
tswap32s(&stfs->f_bsize);
tswap32s(&stfs->f_blocks);
tswap32s(&stfs->f_bfree);
tswap32s(&stfs->f_bavail);
tswap32s(&stfs->f_files);
tswap32s(&stfs->f_ffree);
tswap32s(&stfs->f_fsid.val[0]);
tswap32s(&stfs->f_fsid.val[1]);
tswap32s(&stfs->f_namelen);
}
break;
case TARGET_NR_fstatfs:
stfs = (void *)arg2;
ret = get_errno(sys_fstatfs(arg1, stfs));
goto convert_statfs;
case TARGET_NR_ioperm:
goto unimplemented;
case TARGET_NR_socketcall:
ret = do_socketcall(arg1, (long *)arg2);
break;
case TARGET_NR_syslog:
goto unimplemented;
case TARGET_NR_setitimer:
goto unimplemented;
case TARGET_NR_getitimer:
goto unimplemented;
case TARGET_NR_stat:
ret = get_errno(stat((const char *)arg1, &st));
goto do_stat;
case TARGET_NR_lstat:
ret = get_errno(lstat((const char *)arg1, &st));
goto do_stat;
case TARGET_NR_fstat:
{
ret = get_errno(fstat(arg1, &st));
do_stat:
if (!is_error(ret)) {
struct target_stat *target_st = (void *)arg2;
target_st->st_dev = tswap16(st.st_dev);
target_st->st_ino = tswapl(st.st_ino);
target_st->st_mode = tswap16(st.st_mode);
target_st->st_nlink = tswap16(st.st_nlink);
target_st->st_uid = tswap16(st.st_uid);
target_st->st_gid = tswap16(st.st_gid);
target_st->st_rdev = tswap16(st.st_rdev);
target_st->st_size = tswapl(st.st_size);
target_st->st_blksize = tswapl(st.st_blksize);
target_st->st_blocks = tswapl(st.st_blocks);
target_st->st_atime = tswapl(st.st_atime);
target_st->st_mtime = tswapl(st.st_mtime);
target_st->st_ctime = tswapl(st.st_ctime);
}
}
break;
case TARGET_NR_olduname:
goto unimplemented;
case TARGET_NR_iopl:
goto unimplemented;
case TARGET_NR_vhangup:
ret = get_errno(vhangup());
break;
case TARGET_NR_idle:
goto unimplemented;
case TARGET_NR_vm86old:
goto unimplemented;
case TARGET_NR_wait4:
{
int status;
target_long *status_ptr = (void *)arg2;
struct rusage rusage, *rusage_ptr;
struct target_rusage *target_rusage = (void *)arg4;
if (target_rusage)
rusage_ptr = &rusage;
else
rusage_ptr = NULL;
ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr));
if (!is_error(ret)) {
if (status_ptr)
*status_ptr = tswap32(status);
if (target_rusage) {
target_rusage->ru_utime.tv_sec = tswapl(rusage.ru_utime.tv_sec);
target_rusage->ru_utime.tv_usec = tswapl(rusage.ru_utime.tv_usec);
target_rusage->ru_stime.tv_sec = tswapl(rusage.ru_stime.tv_sec);
target_rusage->ru_stime.tv_usec = tswapl(rusage.ru_stime.tv_usec);
target_rusage->ru_maxrss = tswapl(rusage.ru_maxrss);
target_rusage->ru_ixrss = tswapl(rusage.ru_ixrss);
target_rusage->ru_idrss = tswapl(rusage.ru_idrss);
target_rusage->ru_isrss = tswapl(rusage.ru_isrss);
target_rusage->ru_minflt = tswapl(rusage.ru_minflt);
target_rusage->ru_majflt = tswapl(rusage.ru_majflt);
target_rusage->ru_nswap = tswapl(rusage.ru_nswap);
target_rusage->ru_inblock = tswapl(rusage.ru_inblock);
target_rusage->ru_oublock = tswapl(rusage.ru_oublock);
target_rusage->ru_msgsnd = tswapl(rusage.ru_msgsnd);
target_rusage->ru_msgrcv = tswapl(rusage.ru_msgrcv);
target_rusage->ru_nsignals = tswapl(rusage.ru_nsignals);
target_rusage->ru_nvcsw = tswapl(rusage.ru_nvcsw);
target_rusage->ru_nivcsw = tswapl(rusage.ru_nivcsw);
}
}
}
break;
case TARGET_NR_swapoff:
ret = get_errno(swapoff((const char *)arg1));
break;
case TARGET_NR_sysinfo:
goto unimplemented;
case TARGET_NR_ipc:
goto unimplemented;
case TARGET_NR_fsync:
ret = get_errno(fsync(arg1));
break;
case TARGET_NR_sigreturn:
goto unimplemented;
case TARGET_NR_clone:
goto unimplemented;
case TARGET_NR_setdomainname:
ret = get_errno(setdomainname((const char *)arg1, arg2));
break;
case TARGET_NR_uname:
/* no need to transcode because we use the linux syscall */
ret = get_errno(sys_uname((struct new_utsname *)arg1));
break;
case TARGET_NR_modify_ldt:
goto unimplemented;
case TARGET_NR_adjtimex:
goto unimplemented;
case TARGET_NR_mprotect:
ret = get_errno(mprotect((void *)arg1, arg2, arg3));
break;
case TARGET_NR_sigprocmask:
{
int how = arg1;
sigset_t set, oldset, *set_ptr;
target_ulong *pset = (void *)arg2, *poldset = (void *)arg3;
switch(how) {
case TARGET_SIG_BLOCK:
how = SIG_BLOCK;
break;
case TARGET_SIG_UNBLOCK:
how = SIG_UNBLOCK;
break;
case TARGET_SIG_SETMASK:
how = SIG_SETMASK;
break;
default:
ret = -EINVAL;
goto fail;
}
if (pset) {
target_to_host_old_sigset(&set, pset);
set_ptr = &set;
} else {
set_ptr = NULL;
}
ret = get_errno(sigprocmask(arg1, set_ptr, &oldset));
if (!is_error(ret) && poldset) {
host_to_target_old_sigset(poldset, &oldset);
}
}
break;
case TARGET_NR_create_module:
case TARGET_NR_init_module:
case TARGET_NR_delete_module:
case TARGET_NR_get_kernel_syms:
goto unimplemented;
case TARGET_NR_quotactl:
goto unimplemented;
case TARGET_NR_getpgid:
ret = get_errno(getpgid(arg1));
break;
case TARGET_NR_fchdir:
ret = get_errno(fchdir(arg1));
break;
case TARGET_NR_bdflush:
goto unimplemented;
case TARGET_NR_sysfs:
goto unimplemented;
case TARGET_NR_personality:
ret = get_errno(mprotect((void *)arg1, arg2, arg3));
break;
case TARGET_NR_afs_syscall:
goto unimplemented;
case TARGET_NR_setfsuid:
goto unimplemented;
case TARGET_NR_setfsgid:
goto unimplemented;
case TARGET_NR__llseek:
{
int64_t res;
ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
*(int64_t *)arg4 = tswap64(res);
}
break;
case TARGET_NR_getdents:
#if TARGET_LONG_SIZE != 4
#error not supported
#endif
{
struct dirent *dirp = (void *)arg2;
long count = arg3;
ret = get_errno(sys_getdents(arg1, dirp, count));
if (!is_error(ret)) {
struct dirent *de;
int len = ret;
int reclen;
de = dirp;
while (len > 0) {
reclen = tswap16(de->d_reclen);
if (reclen > len)
break;
de->d_reclen = reclen;
tswapls(&de->d_ino);
tswapls(&de->d_off);
de = (struct dirent *)((char *)de + reclen);
len -= reclen;
}
}
}
break;
case TARGET_NR__newselect:
ret = do_select(arg1, (void *)arg2, (void *)arg3, (void *)arg4,
(void *)arg5);
break;
case TARGET_NR_flock:
goto unimplemented;
case TARGET_NR_msync:
ret = get_errno(msync((void *)arg1, arg2, arg3));
break;
case TARGET_NR_readv:
{
int count = arg3;
int i;
struct iovec *vec;
struct target_iovec *target_vec = (void *)arg2;
vec = alloca(count * sizeof(struct iovec));
for(i = 0;i < count; i++) {
vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
vec[i].iov_len = tswapl(target_vec[i].iov_len);
}
ret = get_errno(readv(arg1, vec, count));
}
break;
case TARGET_NR_writev:
{
int count = arg3;
int i;
struct iovec *vec;
struct target_iovec *target_vec = (void *)arg2;
vec = alloca(count * sizeof(struct iovec));
for(i = 0;i < count; i++) {
vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
vec[i].iov_len = tswapl(target_vec[i].iov_len);
}
ret = get_errno(writev(arg1, vec, count));
}
break;
case TARGET_NR_getsid:
ret = get_errno(getsid(arg1));
break;
case TARGET_NR_fdatasync:
goto unimplemented;
case TARGET_NR__sysctl:
goto unimplemented;
case TARGET_NR_mlock:
ret = get_errno(mlock((void *)arg1, arg2));
break;
case TARGET_NR_munlock:
ret = get_errno(munlock((void *)arg1, arg2));
break;
case TARGET_NR_mlockall:
ret = get_errno(mlockall(arg1));
break;
case TARGET_NR_munlockall:
ret = get_errno(munlockall());
break;
case TARGET_NR_sched_setparam:
goto unimplemented;
case TARGET_NR_sched_getparam:
goto unimplemented;
case TARGET_NR_sched_setscheduler:
goto unimplemented;
case TARGET_NR_sched_getscheduler:
goto unimplemented;
case TARGET_NR_sched_yield:
ret = get_errno(sched_yield());
break;
case TARGET_NR_sched_get_priority_max:
case TARGET_NR_sched_get_priority_min:
case TARGET_NR_sched_rr_get_interval:
case TARGET_NR_nanosleep:
case TARGET_NR_mremap:
case TARGET_NR_setresuid:
case TARGET_NR_getresuid:
case TARGET_NR_vm86:
case TARGET_NR_query_module:
case TARGET_NR_poll:
case TARGET_NR_nfsservctl:
case TARGET_NR_setresgid:
case TARGET_NR_getresgid:
case TARGET_NR_prctl:
case TARGET_NR_rt_sigreturn:
case TARGET_NR_rt_sigaction:
case TARGET_NR_rt_sigprocmask:
case TARGET_NR_rt_sigpending:
case TARGET_NR_rt_sigtimedwait:
case TARGET_NR_rt_sigqueueinfo:
case TARGET_NR_rt_sigsuspend:
case TARGET_NR_pread:
case TARGET_NR_pwrite:
goto unimplemented;
case TARGET_NR_chown:
ret = get_errno(chown((const char *)arg1, arg2, arg3));
break;
case TARGET_NR_getcwd:
ret = get_errno(sys_getcwd1((char *)arg1, arg2));
break;
case TARGET_NR_capget:
case TARGET_NR_capset:
case TARGET_NR_sigaltstack:
case TARGET_NR_sendfile:
case TARGET_NR_getpmsg:
case TARGET_NR_putpmsg:
case TARGET_NR_vfork:
ret = get_errno(vfork());
break;
case TARGET_NR_ugetrlimit:
case TARGET_NR_truncate64:
case TARGET_NR_ftruncate64:
case TARGET_NR_stat64:
case TARGET_NR_lstat64:
case TARGET_NR_fstat64:
case TARGET_NR_lchown32:
case TARGET_NR_getuid32:
case TARGET_NR_getgid32:
case TARGET_NR_geteuid32:
case TARGET_NR_getegid32:
case TARGET_NR_setreuid32:
case TARGET_NR_setregid32:
case TARGET_NR_getgroups32:
case TARGET_NR_setgroups32:
case TARGET_NR_fchown32:
case TARGET_NR_setresuid32:
case TARGET_NR_getresuid32:
case TARGET_NR_setresgid32:
case TARGET_NR_getresgid32:
case TARGET_NR_chown32:
case TARGET_NR_setuid32:
case TARGET_NR_setgid32:
case TARGET_NR_setfsuid32:
case TARGET_NR_setfsgid32:
case TARGET_NR_pivot_root:
case TARGET_NR_mincore:
case TARGET_NR_madvise:
case TARGET_NR_getdents64:
case TARGET_NR_fcntl64:
case TARGET_NR_security:
goto unimplemented;
case TARGET_NR_gettid:
ret = get_errno(gettid());
break;
case TARGET_NR_readahead:
case TARGET_NR_setxattr:
case TARGET_NR_lsetxattr:
case TARGET_NR_fsetxattr:
case TARGET_NR_getxattr:
case TARGET_NR_lgetxattr:
case TARGET_NR_fgetxattr:
case TARGET_NR_listxattr:
case TARGET_NR_llistxattr:
case TARGET_NR_flistxattr:
case TARGET_NR_removexattr:
case TARGET_NR_lremovexattr:
case TARGET_NR_fremovexattr:
goto unimplemented;
default:
unimplemented:
gemu_log("Unsupported syscall: %d\n", num);
ret = -ENOSYS;
break;
}
fail:
return ret;
}
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