static int nvram_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { switch(cmd) { #ifdef CONFIG_PPC_PMAC case OBSOLETE_PMAC_NVRAM_GET_OFFSET: printk(KERN_WARNING "nvram: Using obsolete PMAC_NVRAM_GET_OFFSET ioctl\n"); case IOC_NVRAM_GET_OFFSET: { int part, offset; if (!machine_is(powermac)) return -EINVAL; if (copy_from_user(&part, (void __user*)arg, sizeof(part)) != 0) return -EFAULT; if (part < pmac_nvram_OF || part > pmac_nvram_NR) return -EINVAL; offset = pmac_get_partition(part); if (copy_to_user((void __user*)arg, &offset, sizeof(offset)) != 0) return -EFAULT; break; } #endif /* CONFIG_PPC_PMAC */ case IOC_NVRAM_SYNC: nvram_sync(); break; default: return -EINVAL; } return 0; }
static long nvram_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { switch(cmd) { case PMAC_NVRAM_GET_OFFSET: { int part, offset; if (copy_from_user(&part, (void __user*)arg, sizeof(part)) != 0) return -EFAULT; if (part < pmac_nvram_OF || part > pmac_nvram_NR) return -EINVAL; offset = pmac_get_partition(part); if (copy_to_user((void __user*)arg, &offset, sizeof(offset)) != 0) return -EFAULT; break; } default: return -EINVAL; } return 0; }