diff options
Diffstat (limited to 'arch/sparc/kernel/sys_sparc_64.c')
| -rw-r--r-- | arch/sparc/kernel/sys_sparc_64.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c index 7f0f7c01b297..f63cd2ea8470 100644 --- a/arch/sparc/kernel/sys_sparc_64.c +++ b/arch/sparc/kernel/sys_sparc_64.c @@ -524,23 +524,27 @@ extern void check_pending(int signum); SYSCALL_DEFINE2(getdomainname, char __user *, name, int, len) { - int nlen, err; + int nlen, err; + char tmp[__NEW_UTS_LEN + 1]; if (len < 0) return -EINVAL; - down_read(&uts_sem); - + down_read(&uts_sem); + nlen = strlen(utsname()->domainname) + 1; err = -EINVAL; if (nlen > len) - goto out; + goto out_unlock; + memcpy(tmp, utsname()->domainname, nlen); + + up_read(&uts_sem); - err = -EFAULT; - if (!copy_to_user(name, utsname()->domainname, nlen)) - err = 0; + if (copy_to_user(name, tmp, nlen)) + return -EFAULT; + return 0; -out: +out_unlock: up_read(&uts_sem); return err; } |