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syscall.c
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/*
* Darwin syscalls
*
* Copyright (c) 2003 Fabrice Bellard
* Copyright (c) 2006 Pierre d'Herbemont
*
* 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 <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <mach/host_info.h>
#include <mach/mach.h>
#include <mach/mach_time.h>
#include <mach/message.h>
#include <pthread.h>
#include <dirent.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/sysctl.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/dirent.h>
#include <sys/uio.h>
#include <sys/termios.h>
#include <sys/ptrace.h>
#include <net/if.h>
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/attr.h>
#include <mach/ndr.h>
#include <mach/mig_errors.h>
#include <sys/xattr.h>
#include "qemu.h"
//#define DEBUG_SYSCALL
#ifdef DEBUG_SYSCALL
# define DEBUG_FORCE_ENABLE_LOCAL() int __DEBUG_qemu_user_force_enable = 1
# define DEBUG_BEGIN_ENABLE __DEBUG_qemu_user_force_enable = 1;
# define DEBUG_END_ENABLE __DEBUG_qemu_user_force_enable = 0;
# define DEBUG_DISABLE_ALL() static int __DEBUG_qemu_user_force_enable = 0
# define DEBUG_ENABLE_ALL() static int __DEBUG_qemu_user_force_enable = 1
DEBUG_ENABLE_ALL();
# define DPRINTF(...) do { if(loglevel) fprintf(logfile, __VA_ARGS__); \
if(__DEBUG_qemu_user_force_enable) fprintf(stderr, __VA_ARGS__); \
} while(0)
#else
# define DEBUG_FORCE_ENABLE_LOCAL()
# define DEBUG_BEGIN_ENABLE
# define DEBUG_END_ENABLE
# define DPRINTF(...) do { if(loglevel) fprintf(logfile, __VA_ARGS__); } while(0)
#endif
enum {
bswap_out = 0,
bswap_in = 1
};
extern const char *interp_prefix;
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);
}
/* ------------------------------------------------------------
Mach syscall handling
*/
void static inline print_description_msg_header(mach_msg_header_t *hdr)
{
char *name = NULL;
int i;
struct { int number; char *name; } msg_name[] =
{
/* see http://fxr.watson.org/fxr/source/compat/mach/mach_namemap.c?v=NETBSD */
{ 200, "host_info" },
{ 202, "host_page_size" },
{ 206, "host_get_clock_service" },
{ 206, "host_get_clock_service" },
{ 206, "host_get_clock_service" },
{ 306, "host_get_clock_service" },
{ 3204, "mach_port_allocate" },
{ 3206, "mach_port_deallocate" },
{ 3404, "mach_ports_lookup" },
{ 3409, "mach_task_get_special_port" },
{ 3414, "mach_task_get_exception_ports" },
{ 3418, "mach_semaphore_create" },
{ 3504, "mach_semaphore_create" },
{ 3509, "mach_semaphore_create" },
{ 3518, "semaphore_create" },
{ 3616, "thread_policy" },
{ 3801, "vm_allocate" },
{ 3802, "vm_deallocate" },
{ 3802, "vm_deallocate" },
{ 3803, "vm_protect" },
{ 3812, "vm_map" },
{ 4241776, "lu_message_send_id" }, /* lookupd */
{ 4241876, "lu_message_reply_id" }, /* lookupd */
};
for(i = 0; i < sizeof(msg_name)/sizeof(msg_name[0]); i++) {
if(msg_name[i].number == hdr->msgh_id)
{
name = msg_name[i].name;
break;
}
}
if(!name)
DPRINTF("unknown mach msg %d 0x%x\n", hdr->msgh_id, hdr->msgh_id);
else
DPRINTF("%s\n", name);
#if 0
DPRINTF("Bits: %8x\n", hdr->msgh_bits);
DPRINTF("Size: %8x\n", hdr->msgh_size);
DPRINTF("Rmte: %8x\n", hdr->msgh_remote_port);
DPRINTF("Locl: %8x\n", hdr->msgh_local_port);
DPRINTF("Rsrv: %8x\n", hdr->msgh_reserved);
DPRINTF("Id : %8x\n", hdr->msgh_id);
NDR_record_t *ndr = (NDR_record_t *)(hdr + 1);
DPRINTF("hdr = %p, sizeof(hdr) = %x, NDR = %p\n", hdr, (unsigned int)sizeof(mach_msg_header_t), ndr);
DPRINTF("%d %d %d %d %d %d %d %d\n",
ndr->mig_vers, ndr->if_vers, ndr->reserved1, ndr->mig_encoding,
ndr->int_rep, ndr->char_rep, ndr->float_rep, ndr->reserved2);
#endif
}
static inline void print_mach_msg_return(mach_msg_return_t ret)
{
int i, found = 0;
#define MACH_MSG_RET(msg) { msg, #msg }
struct { int code; char *name; } msg_name[] =
{
/* ref: http://darwinsource.opendarwin.org/10.4.2/xnu-792.2.4/osfmk/man/mach_msg.html */
/* send message */
MACH_MSG_RET(MACH_SEND_MSG_TOO_SMALL),
MACH_MSG_RET(MACH_SEND_NO_BUFFER),
MACH_MSG_RET(MACH_SEND_INVALID_DATA),
MACH_MSG_RET(MACH_SEND_INVALID_HEADER),
MACH_MSG_RET(MACH_SEND_INVALID_DEST),
MACH_MSG_RET(MACH_SEND_INVALID_NOTIFY),
MACH_MSG_RET(MACH_SEND_INVALID_REPLY),
MACH_MSG_RET(MACH_SEND_INVALID_TRAILER),
MACH_MSG_RET(MACH_SEND_INVALID_MEMORY),
MACH_MSG_RET(MACH_SEND_INVALID_RIGHT),
MACH_MSG_RET(MACH_SEND_INVALID_TYPE),
MACH_MSG_RET(MACH_SEND_INTERRUPTED),
MACH_MSG_RET(MACH_SEND_TIMED_OUT),
MACH_MSG_RET(MACH_RCV_BODY_ERROR),
MACH_MSG_RET(MACH_RCV_HEADER_ERROR),
MACH_MSG_RET(MACH_RCV_IN_SET),
MACH_MSG_RET(MACH_RCV_INTERRUPTED),
MACH_MSG_RET(MACH_RCV_INVALID_DATA),
MACH_MSG_RET(MACH_RCV_INVALID_NAME),
MACH_MSG_RET(MACH_RCV_INVALID_NOTIFY),
MACH_MSG_RET(MACH_RCV_INVALID_TRAILER),
MACH_MSG_RET(MACH_RCV_INVALID_TYPE),
MACH_MSG_RET(MACH_RCV_PORT_CHANGED),
MACH_MSG_RET(MACH_RCV_PORT_DIED),
MACH_MSG_RET(MACH_RCV_SCATTER_SMALL),
MACH_MSG_RET(MACH_RCV_TIMED_OUT),
MACH_MSG_RET(MACH_RCV_TOO_LARGE)
};
#undef MACH_MSG_RET
if( ret == MACH_MSG_SUCCESS)
DPRINTF("MACH_MSG_SUCCESS\n");
else
{
for( i = 0; i < sizeof(msg_name)/sizeof(msg_name[0]); i++) {
if(msg_name[i].code == ret) {
DPRINTF("%s\n", msg_name[i].name);
found = 1;
break;
}
}
if(!found)
qerror("unknow mach message ret code %d\n", ret);
}
}
static inline void swap_mach_msg_header(mach_msg_header_t *hdr)
{
hdr->msgh_bits = tswap32(hdr->msgh_bits);
hdr->msgh_size = tswap32(hdr->msgh_size);
hdr->msgh_remote_port = tswap32(hdr->msgh_remote_port);
hdr->msgh_local_port = tswap32(hdr->msgh_local_port);
hdr->msgh_reserved = tswap32(hdr->msgh_reserved);
hdr->msgh_id = tswap32(hdr->msgh_id);
}
struct complex_msg {
mach_msg_header_t hdr;
mach_msg_body_t body;
};
static inline void swap_mach_msg_body(struct complex_msg *complex_msg, int bswap)
{
mach_msg_port_descriptor_t *descr = (mach_msg_port_descriptor_t *)(complex_msg+1);
int i,j;
if(bswap == bswap_in)
tswap32s(&complex_msg->body.msgh_descriptor_count);
DPRINTF("body.msgh_descriptor_count %d\n", complex_msg->body.msgh_descriptor_count);
for(i = 0; i < complex_msg->body.msgh_descriptor_count; i++) {
switch(descr->type)
{
case MACH_MSG_PORT_DESCRIPTOR:
tswap32s(&descr->name);
descr++;
break;
case MACH_MSG_OOL_DESCRIPTOR:
{
mach_msg_ool_descriptor_t *ool = (void *)descr;
tswap32s((uint32_t *)&ool->address);
tswap32s(&ool->size);
descr = (mach_msg_port_descriptor_t *)(ool+1);
break;
}
case MACH_MSG_OOL_PORTS_DESCRIPTOR:
{
mach_msg_ool_ports_descriptor_t *ool_ports = (void *)descr;
mach_port_name_t * port_names;
if(bswap == bswap_in)
{
tswap32s((uint32_t *)&ool_ports->address);
tswap32s(&ool_ports->count);
}
port_names = ool_ports->address;
for(j = 0; j < ool_ports->count; j++)
tswap32s(&port_names[j]);
if(bswap == bswap_out)
{
tswap32s((uint32_t *)&ool_ports->address);
tswap32s(&ool_ports->count);
}
descr = (mach_msg_port_descriptor_t *)(ool_ports+1);
break;
}
default: qerror("unknow mach msg descriptor type %x\n", descr->type);
}
}
if(bswap == bswap_out)
tswap32s(&complex_msg->body.msgh_descriptor_count);
}
static inline void swap_mach_msg(mach_msg_header_t *hdr, int bswap)
{
if (bswap == bswap_out && hdr->msgh_bits & MACH_MSGH_BITS_COMPLEX)
swap_mach_msg_body((struct complex_msg *)hdr, bswap);
swap_mach_msg_header(hdr);
if (bswap == bswap_in && hdr->msgh_bits & MACH_MSGH_BITS_COMPLEX)
swap_mach_msg_body((struct complex_msg *)hdr, bswap);
}
static inline uint32_t target_mach_msg_trap(
mach_msg_header_t *hdr, uint32_t options, uint32_t send_size,
uint32_t rcv_size, uint32_t rcv_name, uint32_t time_out, uint32_t notify)
{
extern int mach_msg_trap(mach_msg_header_t *, mach_msg_option_t,
mach_msg_size_t, mach_msg_size_t, mach_port_t,
mach_msg_timeout_t, mach_port_t);
mach_msg_audit_trailer_t *trailer;
mach_msg_id_t msg_id;
uint32_t ret = 0;
int i;
swap_mach_msg(hdr, bswap_in);
msg_id = hdr->msgh_id;
print_description_msg_header(hdr);
ret = mach_msg_trap(hdr, options, send_size, rcv_size, rcv_name, time_out, notify);
print_mach_msg_return(ret);
if( (options & MACH_RCV_MSG) && (REQUESTED_TRAILER_SIZE(options) > 0) )
{
/* XXX: the kernel always return the full trailer with MACH_SEND_MSG, so we should
probably always bswap it */
/* warning: according to Mac OS X Internals (the book) msg_size might be expressed in
natural_t units but according to xnu/osfmk/mach/message.h: "The size of
the message must be specified in bytes" */
trailer = (mach_msg_audit_trailer_t *)((uint8_t *)hdr + hdr->msgh_size);
/* XXX: Should probably do that based on the option asked by the sender, but dealing
with kernel answer seems more sound */
switch(trailer->msgh_trailer_size)
{
case sizeof(mach_msg_audit_trailer_t):
for(i = 0; i < 8; i++)
tswap32s(&trailer->msgh_audit.val[i]);
/* Fall in mach_msg_security_trailer_t case */
case sizeof(mach_msg_security_trailer_t):
tswap32s(&trailer->msgh_sender.val[0]);
tswap32s(&trailer->msgh_sender.val[1]);
/* Fall in mach_msg_seqno_trailer_t case */
case sizeof(mach_msg_seqno_trailer_t):
tswap32s(&trailer->msgh_seqno);
/* Fall in mach_msg_trailer_t case */
case sizeof(mach_msg_trailer_t):
tswap32s(&trailer->msgh_trailer_type);
tswap32s(&trailer->msgh_trailer_size);
break;
case 0:
/* Safer not to byteswap, but probably wrong */
break;
default:
qerror("unknow trailer type given its size %d\n", trailer->msgh_trailer_size);
break;
}
}
/* Special message handling */
switch (msg_id) {
case 200: /* host_info */
{
mig_reply_error_t *err = (mig_reply_error_t *)hdr;
struct {
uint32_t unknow1;
uint32_t max_cpus;
uint32_t avail_cpus;
uint32_t memory_size;
uint32_t cpu_type;
uint32_t cpu_subtype;
} *data = (void *)(err+1);
DPRINTF("maxcpu = 0x%x\n", data->max_cpus);
DPRINTF("numcpu = 0x%x\n", data->avail_cpus);
DPRINTF("memsize = 0x%x\n", data->memory_size);
#if defined(TARGET_I386)
data->cpu_type = CPU_TYPE_I386;
DPRINTF("cpu_type changed to 0x%x(i386)\n", data->cpu_type);
data->cpu_subtype = CPU_SUBTYPE_PENT;
DPRINTF("cpu_subtype changed to 0x%x(i386_pent)\n", data->cpu_subtype);
#elif defined(TARGET_PPC)
data->cpu_type = CPU_TYPE_POWERPC;
DPRINTF("cpu_type changed to 0x%x(ppc)\n", data->cpu_type);
data->cpu_subtype = CPU_SUBTYPE_POWERPC_750;
DPRINTF("cpu_subtype changed to 0x%x(ppc_all)\n", data->cpu_subtype);
#else
# error target not supported
#endif
break;
}
case 202: /* host_page_size */
{
mig_reply_error_t *err = (mig_reply_error_t *)hdr;
uint32_t *pagesize = (uint32_t *)(err+1);
DPRINTF("pagesize = %d\n", *pagesize);
break;
}
default: break;
}
swap_mach_msg(hdr, bswap_out);
return ret;
}
long do_mach_syscall(void *cpu_env, int num, uint32_t arg1, uint32_t arg2, uint32_t arg3,
uint32_t arg4, uint32_t arg5, uint32_t arg6, uint32_t arg7,
uint32_t arg8)
{
extern uint32_t mach_reply_port(void);
long ret = 0;
arg1 = tswap32(arg1);
arg2 = tswap32(arg2);
arg3 = tswap32(arg3);
arg4 = tswap32(arg4);
arg5 = tswap32(arg5);
arg6 = tswap32(arg6);
arg7 = tswap32(arg7);
arg8 = tswap32(arg8);
DPRINTF("mach syscall %d : " , num);
switch(num) {
/* see xnu/osfmk/mach/syscall_sw.h */
case -26:
DPRINTF("mach_reply_port()\n");
ret = mach_reply_port();
break;
case -27:
DPRINTF("mach_thread_self()\n");
ret = mach_thread_self();
break;
case -28:
DPRINTF("mach_task_self()\n");
ret = mach_task_self();
break;
case -29:
DPRINTF("mach_host_self()\n");
ret = mach_host_self();
break;
case -31:
DPRINTF("mach_msg_trap(0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x)\n",
arg1, arg2, arg3, arg4, arg5, arg6, arg7);
ret = target_mach_msg_trap((mach_msg_header_t *)arg1, arg2, arg3, arg4, arg5, arg6, arg7);
break;
/* may need more translation if target arch is different from host */
#if (defined(TARGET_I386) && defined(__i386__)) || (defined(TARGET_PPC) && defined(__ppc__))
case -33:
DPRINTF("semaphore_signal_trap(0x%x)\n", arg1);
ret = semaphore_signal_trap(arg1);
break;
case -34:
DPRINTF("semaphore_signal_all_trap(0x%x)\n", arg1);
ret = semaphore_signal_all_trap(arg1);
break;
case -35:
DPRINTF("semaphore_signal_thread_trap(0x%x)\n", arg1, arg2);
ret = semaphore_signal_thread_trap(arg1,arg2);
break;
#endif
case -36:
DPRINTF("semaphore_wait_trap(0x%x)\n", arg1);
extern int semaphore_wait_trap(int); // XXX: is there any header for that?
ret = semaphore_wait_trap(arg1);
break;
/* may need more translation if target arch is different from host */
#if (defined(TARGET_I386) && defined(__i386__)) || (defined(TARGET_PPC) && defined(__ppc__))
case -37:
DPRINTF("semaphore_wait_signal_trap(0x%x, 0x%x)\n", arg1, arg2);
ret = semaphore_wait_signal_trap(arg1,arg2);
break;
#endif
case -43:
DPRINTF("map_fd(0x%x, 0x%x, 0x%x, 0x%x, 0x%x)\n",
arg1, arg2, arg3, arg4, arg5);
ret = map_fd(arg1, arg2, (void*)arg3, arg4, arg5);
tswap32s((uint32_t*)arg3);
break;
/* may need more translation if target arch is different from host */
#if (defined(TARGET_I386) && defined(__i386__)) || (defined(TARGET_PPC) && defined(__ppc__))
case -61:
DPRINTF("syscall_thread_switch(0x%x, 0x%x, 0x%x)\n",
arg1, arg2, arg3);
ret = syscall_thread_switch(arg1, arg2, arg3); // just a hint to the scheduler; can drop?
break;
#endif
case -89:
DPRINTF("mach_timebase_info(0x%x)\n", arg1);
struct mach_timebase_info info;
ret = mach_timebase_info(&info);
if(!is_error(ret))
{
struct mach_timebase_info *outInfo = (void*)arg1;
outInfo->numer = tswap32(info.numer);
outInfo->denom = tswap32(info.denom);
}
break;
case -90:
DPRINTF("mach_wait_until()\n");
extern int mach_wait_until(uint64_t); // XXX: is there any header for that?
ret = mach_wait_until(((uint64_t)arg2<<32) | (uint64_t)arg1);
break;
case -91:
DPRINTF("mk_timer_create()\n");
extern int mk_timer_create(); // XXX: is there any header for that?
ret = mk_timer_create();
break;
case -92:
DPRINTF("mk_timer_destroy()\n");
extern int mk_timer_destroy(int); // XXX: is there any header for that?
ret = mk_timer_destroy(arg1);
break;
case -93:
DPRINTF("mk_timer_create()\n");
extern int mk_timer_arm(int, uint64_t); // XXX: is there any header for that?
ret = mk_timer_arm(arg1, ((uint64_t)arg3<<32) | (uint64_t)arg2);
break;
case -94:
DPRINTF("mk_timer_cancel()\n");
extern int mk_timer_cancel(int, uint64_t *); // XXX: is there any header for that?
ret = mk_timer_cancel(arg1, (uint64_t *)arg2);
if((!is_error(ret)) && arg2)
tswap64s((uint64_t *)arg2);
break;
default:
gemu_log("qemu: Unsupported mach syscall: %d(0x%x)\n", num, num);
gdb_handlesig (cpu_env, SIGTRAP);
exit(0);
break;
}
return ret;
}
/* ------------------------------------------------------------
thread type syscall handling
*/
long do_thread_syscall(void *cpu_env, int num, uint32_t arg1, uint32_t arg2, uint32_t arg3,
uint32_t arg4, uint32_t arg5, uint32_t arg6, uint32_t arg7,
uint32_t arg8)
{
extern uint32_t cthread_set_self(uint32_t);
extern uint32_t processor_facilities_used(void);
long ret = 0;
arg1 = tswap32(arg1);
arg2 = tswap32(arg2);
arg3 = tswap32(arg3);
arg4 = tswap32(arg4);
arg5 = tswap32(arg5);
arg6 = tswap32(arg6);
arg7 = tswap32(arg7);
arg8 = tswap32(arg8);
DPRINTF("thread syscall %d : " , num);
switch(num) {
#ifdef TARGET_I386
case 0x3:
#endif
case 0x7FF1: /* cthread_set_self */
DPRINTF("cthread_set_self(0x%x)\n", (unsigned int)arg1);
ret = cthread_set_self(arg1);
#ifdef TARGET_I386
/* we need to update the LDT with the address of the thread */
write_dt((void *)(((CPUX86State *) cpu_env)->ldt.base + (4 * sizeof(uint64_t))), arg1, 1,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
(3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
/* New i386 convention, %gs should be set to our this LDT entry */
cpu_x86_load_seg(cpu_env, R_GS, 0x27);
/* Old i386 convention, the kernel returns the selector for the cthread (pre-10.4.8?)*/
ret = 0x27;
#endif
break;
case 0x7FF2: /* Called the super-fast pthread_self handler by the apple guys */
DPRINTF("pthread_self()\n");
ret = (uint32_t)pthread_self();
break;
case 0x7FF3:
DPRINTF("processor_facilities_used()\n");
#ifdef __i386__
qerror("processor_facilities_used: not implemented!\n");
#else
ret = (uint32_t)processor_facilities_used();
#endif
break;
default:
gemu_log("qemu: Unsupported thread syscall: %d(0x%x)\n", num, num);
gdb_handlesig (cpu_env, SIGTRAP);
exit(0);
break;
}
return ret;
}
/* ------------------------------------------------------------
ioctl handling
*/
static inline void byteswap_termios(struct termios *t)
{
tswap32s((uint32_t*)&t->c_iflag);
tswap32s((uint32_t*)&t->c_oflag);
tswap32s((uint32_t*)&t->c_cflag);
tswap32s((uint32_t*)&t->c_lflag);
/* 20 (char) bytes then */
tswap32s((uint32_t*)&t->c_ispeed);
tswap32s((uint32_t*)&t->c_ospeed);
}
static inline void byteswap_winsize(struct winsize *w)
{
tswap16s(&w->ws_row);
tswap16s(&w->ws_col);
tswap16s(&w->ws_xpixel);
tswap16s(&w->ws_ypixel);
}
#define STRUCT(name, list...) STRUCT_ ## name,
#define STRUCT_SPECIAL(name) STRUCT_ ## name,
enum {
#include "ioctls_types.h"
};
#undef STRUCT
#undef STRUCT_SPECIAL
#define STRUCT(name, list...) const argtype struct_ ## name ## _def[] = { list, TYPE_NULL };
#define STRUCT_SPECIAL(name)
#include "ioctls_types.h"
#undef STRUCT
#undef STRUCT_SPECIAL
typedef struct IOCTLEntry {
unsigned int target_cmd;
unsigned int host_cmd;
const char *name;
int access;
const argtype arg_type[5];
} IOCTLEntry;
#define IOC_R 0x0001
#define IOC_W 0x0002
#define IOC_RW (IOC_R | IOC_W)
#define MAX_STRUCT_SIZE 4096
static IOCTLEntry ioctl_entries[] = {
#define IOCTL(cmd, access, types...) \
{ cmd, cmd, #cmd, access, { types } },
#include "ioctls.h"
{ 0, 0, },
};
/* ??? Implement proper locking for ioctls. */
static long do_ioctl(long fd, long cmd, long arg)
{
const IOCTLEntry *ie;
const argtype *arg_type;
int ret;
uint8_t buf_temp[MAX_STRUCT_SIZE];
int target_size;
void *argptr;
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;
#if defined(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++;
target_size = thunk_type_size(arg_type, 0);
switch(ie->access) {
case IOC_R:
ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
if (!is_error(ret)) {
argptr = lock_user(arg, target_size, 0);
thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
unlock_user(argptr, arg, target_size);
}
break;
case IOC_W:
argptr = lock_user(arg, target_size, 1);
thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
unlock_user(argptr, arg, 0);
ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
break;
default:
case IOC_RW:
argptr = lock_user(arg, target_size, 1);
thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
unlock_user(argptr, arg, 0);
ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
if (!is_error(ret)) {
argptr = lock_user(arg, target_size, 0);
thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
unlock_user(argptr, arg, target_size);
}
break;
}
break;
default:
gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", cmd, arg_type[0]);
ret = -ENOSYS;
break;
}
return ret;
}
/* ------------------------------------------------------------
Unix syscall handling
*/
static inline void byteswap_attrlist(struct attrlist *a)
{
tswap16s(&a->bitmapcount);
tswap16s(&a->reserved);
tswap32s(&a->commonattr);
tswap32s(&a->volattr);
tswap32s(&a->dirattr);
tswap32s(&a->fileattr);
tswap32s(&a->forkattr);
}
struct attrbuf_header {
unsigned long length;
};
static inline void byteswap_attrbuf(struct attrbuf_header *attrbuf, struct attrlist *attrlist)
{
DPRINTF("attrBuf.lenght %lx\n", attrbuf->length);
}
static inline void byteswap_statfs(struct statfs *s)
{
tswap16s((uint16_t*)&s->f_otype);
tswap16s((uint16_t*)&s->f_oflags);
tswap32s((uint32_t*)&s->f_bsize);
tswap32s((uint32_t*)&s->f_iosize);
tswap32s((uint32_t*)&s->f_blocks);
tswap32s((uint32_t*)&s->f_bfree);
tswap32s((uint32_t*)&s->f_bavail);
tswap32s((uint32_t*)&s->f_files);
tswap32s((uint32_t*)&s->f_ffree);
tswap32s((uint32_t*)&s->f_fsid.val[0]);
tswap32s((uint32_t*)&s->f_fsid.val[1]);
tswap16s((uint16_t*)&s->f_reserved1);
tswap16s((uint16_t*)&s->f_type);
tswap32s((uint32_t*)&s->f_flags);
}
static inline void byteswap_stat(struct stat *s)
{
tswap32s((uint32_t*)&s->st_dev);
tswap32s(&s->st_ino);
tswap16s(&s->st_mode);
tswap16s(&s->st_nlink);
tswap32s(&s->st_uid);
tswap32s(&s->st_gid);
tswap32s((uint32_t*)&s->st_rdev);
tswap32s((uint32_t*)&s->st_atimespec.tv_sec);
tswap32s((uint32_t*)&s->st_atimespec.tv_nsec);
tswap32s((uint32_t*)&s->st_mtimespec.tv_sec);
tswap32s((uint32_t*)&s->st_mtimespec.tv_nsec);
tswap32s((uint32_t*)&s->st_ctimespec.tv_sec);
tswap32s((uint32_t*)&s->st_ctimespec.tv_nsec);
tswap64s((uint64_t*)&s->st_size);
tswap64s((uint64_t*)&s->st_blocks);
tswap32s((uint32_t*)&s->st_blksize);
tswap32s(&s->st_flags);
tswap32s(&s->st_gen);
}
static inline void byteswap_dirents(struct dirent *d, int bytes)
{
char *b;
for( b = (char*)d; (int)b < (int)d+bytes; )
{
unsigned short s = ((struct dirent *)b)->d_reclen;
tswap32s(&((struct dirent *)b)->d_ino);
tswap16s(&((struct dirent *)b)->d_reclen);
if(s<=0)
break;
b += s;
}
}
static inline void byteswap_iovec(struct iovec *v, int n)
{
int i;
for(i = 0; i < n; i++)
{
tswap32s((uint32_t*)&v[i].iov_base);
tswap32s((uint32_t*)&v[i].iov_len);
}
}
static inline void byteswap_timeval(struct timeval *t)
{
tswap32s((uint32_t*)&t->tv_sec);
tswap32s((uint32_t*)&t->tv_usec);
}
long do_unix_syscall_indirect(void *cpu_env, int num);
long do_sync(void);
long do_exit(uint32_t arg1);
long do_getlogin(char *out, uint32_t size);
long do_open(char * arg1, uint32_t arg2, uint32_t arg3);
long do_getfsstat(struct statfs * arg1, uint32_t arg2, uint32_t arg3);
long do_sigprocmask(uint32_t arg1, uint32_t * arg2, uint32_t * arg3);
long do_execve(char* arg1, char ** arg2, char ** arg3);
long do_getgroups(uint32_t arg1, gid_t * arg2);
long do_gettimeofday(struct timeval * arg1, void * arg2);
long do_readv(uint32_t arg1, struct iovec * arg2, uint32_t arg3);
long do_writev(uint32_t arg1, struct iovec * arg2, uint32_t arg3);
long do_utimes(char * arg1, struct timeval * arg2);
long do_futimes(uint32_t arg1, struct timeval * arg2);
long do_statfs(char * arg1, struct statfs * arg2);
long do_fstatfs(uint32_t arg1, struct statfs * arg2);
long do_stat(char * arg1, struct stat * arg2);
long do_fstat(uint32_t arg1, struct stat * arg2);
long do_lstat(char * arg1, struct stat * arg2);
long do_getdirentries(uint32_t arg1, void* arg2, uint32_t arg3, void* arg4);
long do_lseek(void *cpu_env, int num);
long do___sysctl(int * name, uint32_t namelen, void * oldp, size_t * oldlenp, void * newp, size_t newlen /* ignored */);
long do_getattrlist(void * arg1, void * arg2, void * arg3, uint32_t arg4, uint32_t arg5);
long do_getdirentriesattr(uint32_t arg1, void * arg2, void * arg3, size_t arg4, void * arg5, void * arg6, void* arg7, uint32_t arg8);
long do_fcntl(int fd, int cmd, int arg);
long no_syscall(void *cpu_env, int num);
long do_pread(uint32_t arg1, void * arg2, size_t arg3, off_t arg4)
{
DPRINTF("0x%x, %p, 0x%lx, 0x%llx\n", arg1, arg2, arg3, arg4);
long ret = pread(arg1, arg2, arg3, arg4);
return ret;
}
long do_read(int d, void *buf, size_t nbytes)
{
DPRINTF("0x%x, %p, 0x%lx\n", d, buf, nbytes);
long ret = get_errno(read(d, buf, nbytes));
if(!is_error(ret))
DPRINTF("%x\n", *(uint32_t*)buf);
return ret;
}
long unimpl_unix_syscall(void *cpu_env, int num);
typedef long (*syscall_function_t)(void *cpu_env, int num);
/* define a table that will handle the syscall number->function association */
#define VOID void
#define INT (uint32_t)get_int_arg(&i, cpu_env)
#define INT64 (uint64_t)get_int64_arg(&i, cpu_env)
#define UINT (unsigned int)INT
#define PTR (void*)INT
#define SIZE INT
#define OFFSET INT64
#define WRAPPER_CALL_DIRECT_0(function, args) long __qemu_##function(void *cpu_env) { return (long)function(); }
#define WRAPPER_CALL_DIRECT_1(function, _arg1) long __qemu_##function(void *cpu_env) { int i = 0; typeof(_arg1) arg1 = _arg1; return (long)function(arg1); }
#define WRAPPER_CALL_DIRECT_2(function, _arg1, _arg2) long __qemu_##function(void *cpu_env) { int i = 0; typeof(_arg1) arg1 = _arg1; typeof(_arg2) arg2 = _arg2; return (long)function(arg1, arg2); }
#define WRAPPER_CALL_DIRECT_3(function, _arg1, _arg2, _arg3) long __qemu_##function(void *cpu_env) { int i = 0; typeof(_arg1) arg1 = _arg1; typeof(_arg2) arg2 = _arg2; typeof(_arg3) arg3 = _arg3; return (long)function(arg1, arg2, arg3); }
#define WRAPPER_CALL_DIRECT_4(function, _arg1, _arg2, _arg3, _arg4) long __qemu_##function(void *cpu_env) { int i = 0; typeof(_arg1) arg1 = _arg1; typeof(_arg2) arg2 = _arg2; typeof(_arg3) arg3 = _arg3; typeof(_arg4) arg4 = _arg4; return (long)function(arg1, arg2, arg3, arg4); }
#define WRAPPER_CALL_DIRECT_5(function, _arg1, _arg2, _arg3, _arg4, _arg5) long __qemu_##function(void *cpu_env) { int i = 0; typeof(_arg1) arg1 = _arg1; typeof(_arg2) arg2 = _arg2; typeof(_arg3) arg3 = _arg3; typeof(_arg4) arg4 = _arg4; typeof(_arg5) arg5 = _arg5; return (long)function(arg1, arg2, arg3, arg4, arg5); }
#define WRAPPER_CALL_DIRECT_6(function, _arg1, _arg2, _arg3, _arg4, _arg5, _arg6) long __qemu_##function(void *cpu_env) { int i = 0; typeof(_arg1) arg1 = _arg1; typeof(_arg2) arg2 = _arg2; typeof(_arg3) arg3 = _arg3; typeof(_arg4) arg4 = _arg4; typeof(_arg5) arg5 = _arg5; typeof(_arg6) arg6 = _arg6; return (long)function(arg1, arg2, arg3, arg4, arg5, arg6); }
#define WRAPPER_CALL_DIRECT_7(function, _arg1, _arg2, _arg3, _arg4, _arg5, _arg6, _arg7) long __qemu_##function(void *cpu_env) { int i = 0; typeof(_arg1) arg1 = _arg1; typeof(_arg2) arg2 = _arg2; typeof(_arg3) arg3 = _arg3; typeof(_arg4) arg4 = _arg4; typeof(_arg5) arg5 = _arg5; typeof(_arg6) arg6 = _arg6; typeof(_arg7) arg7 = _arg7; return (long)function(arg1, arg2, arg3, arg4, arg5, arg6, arg7); }
#define WRAPPER_CALL_DIRECT_8(function, _arg1, _arg2, _arg3, _arg4, _arg5, _arg6, _arg7, _arg8) long __qemu_##function(void *cpu_env) { int i = 0; typeof(_arg1) arg1 = _arg1; typeof(_arg2) arg2 = _arg2; typeof(_arg3) arg3 = _arg3; typeof(_arg4) arg4 = _arg4; typeof(_arg5) arg5 = _arg5; typeof(_arg6) arg6 = _arg6; typeof(_arg7) arg7 = _arg7; typeof(_arg8) arg8 = _arg8; return (long)function(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8); }
#define WRAPPER_CALL_DIRECT(function, nargs, args...) WRAPPER_CALL_DIRECT_##nargs(function, args)
#define WRAPPER_CALL_NOERRNO(function, nargs, args...) WRAPPER_CALL_DIRECT(function, nargs, args)
#define WRAPPER_CALL_INDIRECT(function, nargs, args...)
#define ENTRY(name, number, function, nargs, call_type, args...) WRAPPER_##call_type(function, nargs, args)
#include "syscalls.h"
#undef ENTRY
#undef WRAPPER_CALL_DIRECT
#undef WRAPPER_CALL_NOERRNO
#undef WRAPPER_CALL_INDIRECT
#undef OFFSET
#undef SIZE
#undef INT
#undef PTR
#undef INT64
#define _ENTRY(name, number, function, nargs, call_type) [number] = {\
name, \
number, \
(syscall_function_t)function, \
nargs, \
call_type \
},
#define ENTRY_CALL_DIRECT(name, number, function, nargs, call_type) _ENTRY(name, number, __qemu_##function, nargs, call_type)
#define ENTRY_CALL_NOERRNO(name, number, function, nargs, call_type) ENTRY_CALL_DIRECT(name, number, function, nargs, call_type)
#define ENTRY_CALL_INDIRECT(name, number, function, nargs, call_type) _ENTRY(name, number, function, nargs, call_type)
#define ENTRY(name, number, function, nargs, call_type, args...) ENTRY_##call_type(name, number, function, nargs, call_type)
#define CALL_DIRECT 1
#define CALL_INDIRECT 2
#define CALL_NOERRNO (CALL_DIRECT | 4 /* = 5 */)
struct unix_syscall {
char * name;
int number;
syscall_function_t function;
int nargs;
int call_type;
} unix_syscall_table[SYS_MAXSYSCALL] = {
#include "syscalls.h"
};
#undef ENTRY
#undef _ENTRY
#undef ENTRY_CALL_DIRECT
#undef ENTRY_CALL_INDIRECT
#undef ENTRY_CALL_NOERRNO
/* Actual syscalls implementation */
long do_unix_syscall_indirect(void *cpu_env, int num)
{
long ret;
int new_num;
int i = 0;
new_num = get_int_arg(&i, cpu_env);
#ifdef TARGET_I386
((CPUX86State*)cpu_env)->regs[R_ESP] += 4;
/* XXX: not necessary */
((CPUX86State*)cpu_env)->regs[R_EAX] = new_num;
#elif TARGET_PPC
{
int i;
uint32_t **regs = ((CPUPPCState*)cpu_env)->gpr;
for(i = 3; i < 11; i++)
*regs[i] = *regs[i+1];
/* XXX: not necessary */
*regs[0] = new_num;
}
#endif
ret = do_unix_syscall(cpu_env, new_num);
#ifdef TARGET_I386
((CPUX86State*)cpu_env)->regs[R_ESP] -= 4;
/* XXX: not necessary */
((CPUX86State*)cpu_env)->regs[R_EAX] = num;
#elif TARGET_PPC
{
int i;
/* XXX: not really needed those regs are volatile accross calls */
uint32_t **regs = ((CPUPPCState*)cpu_env)->gpr;
for(i = 11; i > 3; i--)
*regs[i] = *regs[i-1];
regs[3] = new_num;
*regs[0] = num;
}
#endif
return ret;
}
long do_exit(uint32_t arg1)
{
exit(arg1);
/* not reached */
return -1;
}
long do_sync(void)
{