diff options
Diffstat (limited to 'arch/sparc/kernel/process.c')
| -rw-r--r-- | arch/sparc/kernel/process.c | 52 |
1 files changed, 38 insertions, 14 deletions
diff --git a/arch/sparc/kernel/process.c b/arch/sparc/kernel/process.c index 0442ab00518d..d72fa0665943 100644 --- a/arch/sparc/kernel/process.c +++ b/arch/sparc/kernel/process.c @@ -12,19 +12,24 @@ #include <linux/sched/task.h> #include <linux/sched/task_stack.h> #include <linux/signal.h> +#include <linux/syscalls.h> #include "kernel.h" asmlinkage long sparc_fork(struct pt_regs *regs) { - unsigned long orig_i1 = regs->u_regs[UREG_I1]; + unsigned long orig_i1; long ret; struct kernel_clone_args args = { .exit_signal = SIGCHLD, - /* Reuse the parent's stack for the child. */ - .stack = regs->u_regs[UREG_FP], }; + synchronize_user_stack(); + + orig_i1 = regs->u_regs[UREG_I1]; + /* Reuse the parent's stack for the child. */ + args.stack = regs->u_regs[UREG_FP]; + ret = kernel_clone(&args); /* If we get an error and potentially restart the system @@ -40,16 +45,19 @@ asmlinkage long sparc_fork(struct pt_regs *regs) asmlinkage long sparc_vfork(struct pt_regs *regs) { - unsigned long orig_i1 = regs->u_regs[UREG_I1]; + unsigned long orig_i1; long ret; - struct kernel_clone_args args = { .flags = CLONE_VFORK | CLONE_VM, .exit_signal = SIGCHLD, - /* Reuse the parent's stack for the child. */ - .stack = regs->u_regs[UREG_FP], }; + synchronize_user_stack(); + + orig_i1 = regs->u_regs[UREG_I1]; + /* Reuse the parent's stack for the child. */ + args.stack = regs->u_regs[UREG_FP]; + ret = kernel_clone(&args); /* If we get an error and potentially restart the system @@ -65,15 +73,18 @@ asmlinkage long sparc_vfork(struct pt_regs *regs) asmlinkage long sparc_clone(struct pt_regs *regs) { - unsigned long orig_i1 = regs->u_regs[UREG_I1]; - unsigned int flags = lower_32_bits(regs->u_regs[UREG_I0]); + unsigned long orig_i1; + unsigned int flags; long ret; + struct kernel_clone_args args = {0}; - struct kernel_clone_args args = { - .flags = (flags & ~CSIGNAL), - .exit_signal = (flags & CSIGNAL), - .tls = regs->u_regs[UREG_I3], - }; + synchronize_user_stack(); + + orig_i1 = regs->u_regs[UREG_I1]; + flags = lower_32_bits(regs->u_regs[UREG_I0]); + args.flags = (flags & ~CSIGNAL); + args.exit_signal = (flags & CSIGNAL); + args.tls = regs->u_regs[UREG_I3]; #ifdef CONFIG_COMPAT if (test_thread_flag(TIF_32BIT)) { @@ -108,3 +119,16 @@ asmlinkage long sparc_clone(struct pt_regs *regs) return ret; } + +asmlinkage long sparc_clone3(struct pt_regs *regs) +{ + unsigned long sz; + struct clone_args __user *cl_args; + + synchronize_user_stack(); + + cl_args = (struct clone_args __user *)regs->u_regs[UREG_I0]; + sz = regs->u_regs[UREG_I1]; + + return sys_clone3(cl_args, sz); +} |