diff options
Diffstat (limited to 'net/atm/ioctl.c')
| -rw-r--r-- | net/atm/ioctl.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/net/atm/ioctl.c b/net/atm/ioctl.c index fdd0e3434523..52f2c77e656f 100644 --- a/net/atm/ioctl.c +++ b/net/atm/ioctl.c @@ -182,7 +182,30 @@ static int do_vcc_ioctl(struct socket *sock, unsigned int cmd, } error = atm_getnames(buf, len); } else { - error = atm_dev_ioctl(cmd, argp, compat); + int number; + + if (IS_ENABLED(CONFIG_COMPAT) && compat) { +#ifdef CONFIG_COMPAT + struct compat_atmif_sioc __user *csioc = argp; + compat_uptr_t carg; + + len = &csioc->length; + if (get_user(carg, &csioc->arg)) + return -EFAULT; + buf = compat_ptr(carg); + if (get_user(number, &csioc->number)) + return -EFAULT; +#endif + } else { + struct atmif_sioc __user *sioc = argp; + + len = &sioc->length; + if (get_user(buf, &sioc->arg)) + return -EFAULT; + if (get_user(number, &sioc->number)) + return -EFAULT; + } + error = atm_dev_ioctl(cmd, buf, len, number, compat); } done: |