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linux-user: implement reboot syscall 

For OBS, we're running a full cross-guest inside of a VM. When a build
is done there, we reboot the guest as shutdown mechanism.

Unfortunately, reboot is not implemented in linux-user. So this mechanism
fails, spilling unpretty warnings. This patch implements sys_reboot()
emulation.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
This commit is contained in:
Alexander Graf 2011-09-27 14:39:42 +02:00 committed by Riku Voipio
parent f4c690101c
commit 0f6b4d2112
1 changed files with 7 additions and 1 deletions
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8
linux-user/syscall.c
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@ -248,6 +248,8 @@ _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
#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);
static bitmask_transtbl fcntl_flags_tbl[] = {
{ TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, },
@ -5872,7 +5874,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
break;
#endif
case TARGET_NR_reboot:
goto unimplemented;
if (!(p = lock_user_string(arg4)))
goto efault;
ret = reboot(arg1, arg2, arg3, p);
unlock_user(p, arg4, 0);
break;
#ifdef TARGET_NR_readdir
case TARGET_NR_readdir:
goto unimplemented;