Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux...

[linux-2.6-omap-h63xx.git] / arch / sparc64 / kernel / sys_sparc.c

diff --git a/arch/sparc64/kernel/sys_sparc.c b/arch/sparc64/kernel/sys_sparc.c
index bf5f14ee73def064e8d981707ad289e8f60d02a1..d108eeb0734fe2fe3586d01a8c2e2fdf5aaf25e4 100644 (file)
--- a/arch/sparc64/kernel/sys_sparc.c
+++ b/arch/sparc64/kernel/sys_sparc.c
@@ -19,7 +19,6 @@
 #include <linux/mman.h>
 #include <linux/utsname.h>
 #include <linux/smp.h>
-#include <linux/smp_lock.h>
 #include <linux/slab.h>
 #include <linux/syscalls.h>
 #include <linux/ipc.h>
@@ -31,6 +30,7 @@
 #include <asm/utrap.h>
 #include <asm/perfctr.h>
 #include <asm/a.out.h>
+#include <asm/unistd.h>
 
 /* #define DEBUG_UNIMP_SYSCALL */
 
@@ -707,19 +707,21 @@ asmlinkage long sys_getdomainname(char __user *name, int len)
 {
         int nlen, err;
 
-       if (len < 0 || len > __NEW_UTS_LEN)
+       if (len < 0)
                return -EINVAL;
 
        down_read(&uts_sem);
        
-       nlen = strlen(system_utsname.domainname) + 1;
-        if (nlen < len)
-                len = nlen;
+       nlen = strlen(utsname()->domainname) + 1;
+       err = -EINVAL;
+       if (nlen > len)
+               goto out;
 
        err = -EFAULT;
-       if (!copy_to_user(name, system_utsname.domainname, len))
+       if (!copy_to_user(name, utsname()->domainname, nlen))
                err = 0;
 
+out:
        up_read(&uts_sem);
        return err;
 }
@@ -961,3 +963,23 @@ asmlinkage long sys_perfctr(int opcode, unsigned long arg0, unsigned long arg1,
        };
        return err;
 }
+
+/*
+ * Do a system call from kernel instead of calling sys_execve so we
+ * end up with proper pt_regs.
+ */
+int kernel_execve(const char *filename, char *const argv[], char *const envp[])
+{
+       long __res;
+       register long __g1 __asm__ ("g1") = __NR_execve;
+       register long __o0 __asm__ ("o0") = (long)(filename);
+       register long __o1 __asm__ ("o1") = (long)(argv);
+       register long __o2 __asm__ ("o2") = (long)(envp);
+       asm volatile ("t 0x6d\n\t"
+                     "sub %%g0, %%o0, %0\n\t"
+                     "movcc %%xcc, %%o0, %0\n\t"
+                     : "=r" (__res), "=&r" (__o0)
+                     : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1)
+                     : "cc");
+       return __res;
+}