diff options
Diffstat (limited to 'arch/sparc/kernel/sys_sparc.c')
| -rw-r--r-- | arch/sparc/kernel/sys_sparc.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/arch/sparc/kernel/sys_sparc.c b/arch/sparc/kernel/sys_sparc.c index 896863fb208a1..a954a0c000002 100644 --- a/arch/sparc/kernel/sys_sparc.c +++ b/arch/sparc/kernel/sys_sparc.c @@ -24,6 +24,7 @@ #include <asm/uaccess.h> #include <asm/ipc.h> +#include <asm/unistd.h> /* #define DEBUG_UNIMP_SYSCALL */ @@ -475,16 +476,38 @@ asmlinkage int sys_getdomainname(char __user *name, int len) down_read(&uts_sem); - nlen = strlen(system_utsname.domainname) + 1; + nlen = strlen(utsname()->domainname) + 1; err = -EINVAL; if (nlen > len) goto out; err = -EFAULT; - if (!copy_to_user(name, system_utsname.domainname, nlen)) + if (!copy_to_user(name, utsname()->domainname, nlen)) err = 0; out: up_read(&uts_sem); 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 0x10\n\t" + "bcc 1f\n\t" + "mov %%o0, %0\n\t" + "sub %%g0, %%o0, %0\n\t" + "1:\n\t" + : "=r" (__res), "=&r" (__o0) + : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) + : "cc"); + return __res; +} |