/* $Id: ia32_ioctl.c,v 1.25 2002/10/11 07:17:06 ak Exp $ * ioctl32.c: Conversion between 32bit and 64bit native ioctls. * * Copyright (C) 1997-2000 Jakub Jelinek (jakub@redhat.com) * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be) * Copyright (C) 2001,2002 Andi Kleen, SuSE Labs * * These routines maintain argument size conversion between 32bit and 64bit * ioctls. */ #define INCLUDES #include #include "compat_ioctl.c" #include #include #define CODE #include "compat_ioctl.c" #ifndef TIOCGDEV #define TIOCGDEV _IOR('T',0x32, unsigned int) #endif static int tiocgdev(unsigned fd, unsigned cmd, unsigned int __user *ptr) { struct file *file; struct tty_struct *real_tty; int fput_needed, ret; file = fget_light(fd, &fput_needed); if (!file) return -EBADF; ret = -EINVAL; if (file->f_op->ioctl != tty_ioctl) goto out; real_tty = (struct tty_struct *)file->private_data; if (!real_tty) goto out; ret = put_user(new_encode_dev(tty_devnum(real_tty)), ptr); out: fput_light(file, fput_needed); return ret; } #define RTC_IRQP_READ32 _IOR('p', 0x0b, unsigned int) /* Read IRQ rate */ #define RTC_IRQP_SET32 _IOW('p', 0x0c, unsigned int) /* Set IRQ rate */ #define RTC_EPOCH_READ32 _IOR('p', 0x0d, unsigned) /* Read epoch */ #define RTC_EPOCH_SET32 _IOW('p', 0x0e, unsigned) /* Set epoch */ static int rtc32_ioctl(unsigned fd, unsigned cmd, unsigned long arg) { unsigned long val; mm_segment_t oldfs = get_fs(); int ret; switch (cmd) { case RTC_IRQP_READ32: set_fs(KERNEL_DS); ret = sys_ioctl(fd, RTC_IRQP_READ, (unsigned long)&val); set_fs(oldfs); if (!ret) ret = put_user(val, (unsigned int __user *) arg); return ret; case RTC_IRQP_SET32: cmd = RTC_IRQP_SET; break; case RTC_EPOCH_READ32: set_fs(KERNEL_DS); ret = sys_ioctl(fd, RTC_EPOCH_READ, (unsigned long) &val); set_fs(oldfs); if (!ret) ret = put_user(val, (unsigned int __user *) arg); return ret; case RTC_EPOCH_SET32: cmd = RTC_EPOCH_SET; break; } return sys_ioctl(fd,cmd,arg); } /* /proc/mtrr ioctls */ struct mtrr_sentry32 { compat_ulong_t base; /* Base address */ compat_uint_t size; /* Size of region */ compat_uint_t type; /* Type of region */ }; struct mtrr_gentry32 { compat_ulong_t regnum; /* Register number */ compat_uint_t base; /* Base address */ compat_uint_t size; /* Size of region */ compat_uint_t type; /* Type of region */ }; #define MTRR_IOCTL_BASE 'M' #define MTRRIOC32_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry32) #define MTRRIOC32_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry32) #define MTRRIOC32_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry32) #define MTRRIOC32_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry32) #define MTRRIOC32_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry32) #define MTRRIOC32_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry32) #define MTRRIOC32_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry32) #define MTRRIOC32_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry32) #define MTRRIOC32_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry32) #define MTRRIOC32_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry32) static int mtrr_ioctl32(unsigned int fd, unsigned int cmd, unsigned long arg) { struct mtrr_gentry g; struct mtrr_sentry s; int get = 0, err = 0; struct mtrr_gentry32 __user *g32 = (struct mtrr_gentry32 __user *)arg; mm_segment_t oldfs = get_fs(); switch (cmd) { #define SET(x) case MTRRIOC32_ ## x ## _ENTRY: cmd = MTRRIOC_ ## x ## _ENTRY; break #define GET(x) case MTRRIOC32_ ## x ## _ENTRY: cmd = MTRRIOC_ ## x ## _ENTRY; get=1; break SET(ADD); SET(SET); SET(DEL); GET(GET); SET(KILL); SET(ADD_PAGE); SET(SET_PAGE); SET(DEL_PAGE); GET(GET_PAGE); SET(KILL_PAGE); } if (get) { err = get_user(g.regnum, &g32->regnum); err |= get_user(g.base, &g32->base); err |= get_user(g.size, &g32->size); err |= get_user(g.type, &g32->type); arg = (unsigned long)&g; } else { struct mtrr_sentry32 __user *s32 = (struct mtrr_sentry32 __user *)arg; err = get_user(s.base, &s32->base); err |= get_user(s.size, &s32->size); err |= get_user(s.type, &s32->type); arg = (unsigned long)&s; } if (err) return err; set_fs(KERNEL_DS); err = sys_ioctl(fd, cmd, arg); set_fs(oldfs); if (!err && get) { err = put_user(g.base, &g32->base); err |= put_user(g.size, &g32->size); err |= put_user(g.regnum, &g32->regnum); err |= put_user(g.type, &g32->type); } return err; } #define HANDLE_IOCTL(cmd,handler) { (cmd), (ioctl_trans_handler_t)(handler) }, #define COMPATIBLE_IOCTL(cmd) HANDLE_IOCTL(cmd,sys_ioctl) struct ioctl_trans ioctl_start[] = { #include #define DECLARES #include "compat_ioctl.c" COMPATIBLE_IOCTL(HDIO_SET_KEEPSETTINGS) COMPATIBLE_IOCTL(HDIO_SCAN_HWIF) COMPATIBLE_IOCTL(BLKRASET) COMPATIBLE_IOCTL(0x4B50) /* KDGHWCLK - not in the kernel, but don't complain */ COMPATIBLE_IOCTL(0x4B51) /* KDSHWCLK - not in the kernel, but don't complain */ COMPATIBLE_IOCTL(FIOQSIZE) /* And these ioctls need translation */ HANDLE_IOCTL(TIOCGDEV, tiocgdev) /* realtime device */ HANDLE_IOCTL(RTC_IRQP_READ, rtc32_ioctl) HANDLE_IOCTL(RTC_IRQP_READ32,rtc32_ioctl) HANDLE_IOCTL(RTC_IRQP_SET32, rtc32_ioctl) HANDLE_IOCTL(RTC_EPOCH_READ32, rtc32_ioctl) HANDLE_IOCTL(RTC_EPOCH_SET32, rtc32_ioctl) /* take care of sizeof(sizeof()) breakage */ /* mtrr */ HANDLE_IOCTL(MTRRIOC32_ADD_ENTRY, mtrr_ioctl32) HANDLE_IOCTL(MTRRIOC32_SET_ENTRY, mtrr_ioctl32) HANDLE_IOCTL(MTRRIOC32_DEL_ENTRY, mtrr_ioctl32) HANDLE_IOCTL(MTRRIOC32_GET_ENTRY, mtrr_ioctl32) HANDLE_IOCTL(MTRRIOC32_KILL_ENTRY, mtrr_ioctl32) HANDLE_IOCTL(MTRRIOC32_ADD_PAGE_ENTRY, mtrr_ioctl32) HANDLE_IOCTL(MTRRIOC32_SET_PAGE_ENTRY, mtrr_ioctl32) HANDLE_IOCTL(MTRRIOC32_DEL_PAGE_ENTRY, mtrr_ioctl32) HANDLE_IOCTL(MTRRIOC32_GET_PAGE_ENTRY, mtrr_ioctl32) HANDLE_IOCTL(MTRRIOC32_KILL_PAGE_ENTRY, mtrr_ioctl32) }; int ioctl_table_size = ARRAY_SIZE(ioctl_start);