diff options
| -rw-r--r-- | arch/s390/kernel/compat_linux.c | 33 | ||||
| -rw-r--r-- | arch/s390/kernel/compat_linux.h | 3 | ||||
| -rw-r--r-- | arch/s390/kernel/compat_wrapper.S | 7 | ||||
| -rw-r--r-- | arch/s390/kernel/entry.h | 3 | ||||
| -rw-r--r-- | arch/s390/kernel/process.c | 30 | ||||
| -rw-r--r-- | arch/s390/kernel/syscalls.S | 2 |
6 files changed, 39 insertions, 39 deletions
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c index f741cd49111..05cf446e60b 100644 --- a/arch/s390/kernel/compat_linux.c +++ b/arch/s390/kernel/compat_linux.c @@ -443,31 +443,26 @@ sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo) * sys32_execve() executes a new program after the asm stub has set * things up for us. This should basically do what I want it to. */ -asmlinkage long sys32_execve(void) +asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv, + compat_uptr_t __user *envp) { struct pt_regs *regs = task_pt_regs(current); char *filename; - unsigned long result; - int rc; - - filename = getname(compat_ptr(regs->orig_gpr2)); - if (IS_ERR(filename)) { - result = PTR_ERR(filename); - goto out; - } - rc = compat_do_execve(filename, compat_ptr(regs->gprs[3]), - compat_ptr(regs->gprs[4]), regs); - if (rc) { - result = rc; - goto out_putname; - } + long rc; + + filename = getname(name); + rc = PTR_ERR(filename); + if (IS_ERR(filename)) + return rc; + rc = compat_do_execve(filename, argv, envp, regs); + if (rc) + goto out; current->thread.fp_regs.fpc=0; asm volatile("sfpc %0,0" : : "d" (0)); - result = regs->gprs[2]; -out_putname: - putname(filename); + rc = regs->gprs[2]; out: - return result; + putname(filename); + return rc; } diff --git a/arch/s390/kernel/compat_linux.h b/arch/s390/kernel/compat_linux.h index 7cceb67ff8a..c07f9ca05ad 100644 --- a/arch/s390/kernel/compat_linux.h +++ b/arch/s390/kernel/compat_linux.h @@ -198,7 +198,8 @@ long sys32_rt_sigprocmask(int how, compat_sigset_t __user *set, compat_sigset_t __user *oset, size_t sigsetsize); long sys32_rt_sigpending(compat_sigset_t __user *set, size_t sigsetsize); long sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo); -long sys32_execve(void); +long sys32_execve(char __user *name, compat_uptr_t __user *argv, + compat_uptr_t __user *envp); long sys32_init_module(void __user *umod, unsigned long len, const char __user *uargs); long sys32_delete_module(const char __user *name_user, unsigned int flags); diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S index 28f8440d2ec..8a6a7969c62 100644 --- a/arch/s390/kernel/compat_wrapper.S +++ b/arch/s390/kernel/compat_wrapper.S @@ -1848,3 +1848,10 @@ sys_clone_wrapper: llgtr %r4,%r4 # int * llgtr %r5,%r5 # int * jg sys_clone # branch to system call + + .globl sys32_execve_wrapper +sys32_execve_wrapper: + llgtr %r2,%r2 # char * + llgtr %r3,%r3 # compat_uptr_t * + llgtr %r4,%r4 # compat_uptr_t * + jg sys32_execve # branch to system call diff --git a/arch/s390/kernel/entry.h b/arch/s390/kernel/entry.h index 91fd78839c5..e1e5e767ab5 100644 --- a/arch/s390/kernel/entry.h +++ b/arch/s390/kernel/entry.h @@ -46,7 +46,8 @@ long sys_clone(unsigned long newsp, unsigned long clone_flags, int __user *parent_tidptr, int __user *child_tidptr); long sys_vfork(void); void execve_tail(void); -long sys_execve(void); +long sys_execve(char __user *name, char __user * __user *argv, + char __user * __user *envp); long sys_sigsuspend(int history0, int history1, old_sigset_t mask); long sys_sigaction(int sig, const struct old_sigaction __user *act, struct old_sigaction __user *oact); diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 189d978f76d..59fe6ecc6ed 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -32,6 +32,7 @@ #include <linux/elfcore.h> #include <linux/kernel_stat.h> #include <linux/syscalls.h> +#include <linux/compat.h> #include <asm/compat.h> #include <asm/uaccess.h> #include <asm/pgtable.h> @@ -268,30 +269,25 @@ asmlinkage void execve_tail(void) /* * sys_execve() executes a new program. */ -SYSCALL_DEFINE0(execve) +SYSCALL_DEFINE3(execve, char __user *, name, char __user * __user *, argv, + char __user * __user *, envp) { struct pt_regs *regs = task_pt_regs(current); char *filename; - unsigned long result; - int rc; + long rc; - filename = getname((char __user *) regs->orig_gpr2); - if (IS_ERR(filename)) { - result = PTR_ERR(filename); + filename = getname(name); + rc = PTR_ERR(filename); + if (IS_ERR(filename)) + return rc; + rc = do_execve(filename, argv, envp, regs); + if (rc) goto out; - } - rc = do_execve(filename, (char __user * __user *) regs->gprs[3], - (char __user * __user *) regs->gprs[4], regs); - if (rc) { - result = rc; - goto out_putname; - } execve_tail(); - result = regs->gprs[2]; -out_putname: - putname(filename); + rc = regs->gprs[2]; out: - return result; + putname(filename); + return rc; } /* diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S index ff79d58e0eb..062dd8f9237 100644 --- a/arch/s390/kernel/syscalls.S +++ b/arch/s390/kernel/syscalls.S @@ -19,7 +19,7 @@ SYSCALL(sys_restart_syscall,sys_restart_syscall,sys_restart_syscall) SYSCALL(sys_creat,sys_creat,sys32_creat_wrapper) SYSCALL(sys_link,sys_link,sys32_link_wrapper) SYSCALL(sys_unlink,sys_unlink,sys32_unlink_wrapper) /* 10 */ -SYSCALL(sys_execve,sys_execve,sys32_execve) +SYSCALL(sys_execve,sys_execve,sys32_execve_wrapper) SYSCALL(sys_chdir,sys_chdir,sys32_chdir_wrapper) SYSCALL(sys_time,sys_ni_syscall,sys32_time_wrapper) /* old time syscall */ SYSCALL(sys_mknod,sys_mknod,sys32_mknod_wrapper) |