From patchwork Thu Oct 27 12:02:51 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [05/10] linux-user: implement reboot syscall Date: Thu, 27 Oct 2011 02:02:51 -0000 From: riku.voipio@linaro.org X-Patchwork-Id: 122141 Message-Id: <0f6b4d21121bec70b383b4a3bc1c46d9c83f8692.1319716562.git.riku.voipio@linaro.org> To: qemu-devel@nongnu.org Cc: Alexander Graf From: Alexander Graf 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 Signed-off-by: Riku Voipio --- linux-user/syscall.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 6159571..9f5da36 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -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;