Commit 8310a32c authored by David S. Miller's avatar David S. Miller

[SPARC]: Fix length parameter verification in sys_getdomainname().

Found by scrashme.
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8a84eb16
......@@ -465,21 +465,21 @@ sys_rt_sigaction(int sig,
asmlinkage int sys_getdomainname(char __user *name, int len)
{
int nlen;
int err = -EFAULT;
int nlen, err;
if (len < 0 || len > __NEW_UTS_LEN)
return -EINVAL;
down_read(&uts_sem);
nlen = strlen(system_utsname.domainname) + 1;
if (nlen < len)
len = nlen;
if (len > __NEW_UTS_LEN)
goto done;
if (copy_to_user(name, system_utsname.domainname, len))
goto done;
err = -EFAULT;
if (!copy_to_user(name, system_utsname.domainname, len))
err = 0;
done:
up_read(&uts_sem);
return err;
}
......@@ -701,21 +701,21 @@ extern void check_pending(int signum);
asmlinkage long sys_getdomainname(char __user *name, int len)
{
int nlen;
int err = -EFAULT;
int nlen, err;
if (len < 0 || len > __NEW_UTS_LEN)
return -EINVAL;
down_read(&uts_sem);
nlen = strlen(system_utsname.domainname) + 1;
if (nlen < len)
len = nlen;
if (len > __NEW_UTS_LEN)
goto done;
if (copy_to_user(name, system_utsname.domainname, len))
goto done;
err = -EFAULT;
if (!copy_to_user(name, system_utsname.domainname, len))
err = 0;
done:
up_read(&uts_sem);
return err;
}
......
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