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compat_ioctl.c
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/*
* ioctl32.c: Conversion between 32bit and 64bit native ioctls.
*
* Copyright (C) 1997-2000 Jakub Jelinek ([email protected])
* Copyright (C) 1998 Eddie C. Dost ([email protected])
* Copyright (C) 2001,2002 Andi Kleen, SuSE Labs
* Copyright (C) 2003 Pavel Machek ([email protected])
*
* These routines maintain argument size conversion between 32bit and 64bit
* ioctls.
*/
#include <linux/joystick.h>
#include <linux/types.h>
#include <linux/compat.h>
#include <linux/kernel.h>
#include <linux/capability.h>
#include <linux/compiler.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/ioctl.h>
#include <linux/if.h>
#include <linux/if_bridge.h>
#include <linux/slab.h>
#include <linux/raid/md_u.h>
#include <linux/kd.h>
#include <linux/route.h>
#include <linux/in6.h>
#include <linux/ipv6_route.h>
#include <linux/skbuff.h>
#include <linux/netlink.h>
#include <linux/vt.h>
#include <linux/falloc.h>
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/ppp_defs.h>
#include <linux/if_ppp.h>
#include <linux/if_pppox.h>
#include <linux/mtio.h>
#include <linux/auto_fs.h>
#include <linux/auto_fs4.h>
#include <linux/tty.h>
#include <linux/vt_kern.h>
#include <linux/fb.h>
#include <linux/videodev.h>
#include <linux/netdevice.h>
#include <linux/raw.h>
#include <linux/smb_fs.h>
#include <linux/blkdev.h>
#include <linux/elevator.h>
#include <linux/rtc.h>
#include <linux/pci.h>
#include <linux/module.h>
#include <linux/serial.h>
#include <linux/if_tun.h>
#include <linux/ctype.h>
#include <linux/syscalls.h>
#include <linux/i2c.h>
#include <linux/i2c-dev.h>
#include <linux/atalk.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci.h>
#include <net/bluetooth/rfcomm.h>
#include <linux/capi.h>
#include <linux/gigaset_dev.h>
#ifdef CONFIG_BLOCK
#include <linux/loop.h>
#include <scsi/scsi.h>
#include <scsi/scsi_ioctl.h>
#include <scsi/sg.h>
#endif
#include <asm/uaccess.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/if_bonding.h>
#include <linux/watchdog.h>
#include <linux/soundcard.h>
#include <linux/lp.h>
#include <linux/ppdev.h>
#include <linux/atm.h>
#include <linux/atmarp.h>
#include <linux/atmclip.h>
#include <linux/atmdev.h>
#include <linux/atmioc.h>
#include <linux/atmlec.h>
#include <linux/atmmpc.h>
#include <linux/atmsvc.h>
#include <linux/atm_tcp.h>
#include <linux/sonet.h>
#include <linux/atm_suni.h>
#include <linux/usb.h>
#include <linux/usbdevice_fs.h>
#include <linux/nbd.h>
#include <linux/random.h>
#include <linux/filter.h>
#include <linux/pktcdvd.h>
#include <linux/hiddev.h>
#include <linux/dvb/audio.h>
#include <linux/dvb/dmx.h>
#include <linux/dvb/frontend.h>
#include <linux/dvb/video.h>
#include <linux/sort.h>
#ifdef CONFIG_SPARC
#include <asm/fbio.h>
#endif
static int w_long(unsigned int fd, unsigned int cmd,
compat_ulong_t __user *argp)
{
mm_segment_t old_fs = get_fs();
int err;
unsigned long val;
set_fs (KERNEL_DS);
err = sys_ioctl(fd, cmd, (unsigned long)&val);
set_fs (old_fs);
if (!err && put_user(val, argp))
return -EFAULT;
return err;
}
static int rw_long(unsigned int fd, unsigned int cmd,
compat_ulong_t __user *argp)
{
mm_segment_t old_fs = get_fs();
int err;
unsigned long val;
if(get_user(val, argp))
return -EFAULT;
set_fs (KERNEL_DS);
err = sys_ioctl(fd, cmd, (unsigned long)&val);
set_fs (old_fs);
if (!err && put_user(val, argp))
return -EFAULT;
return err;
}
struct compat_video_event {
int32_t type;
compat_time_t timestamp;
union {
video_size_t size;
unsigned int frame_rate;
} u;
};
static int do_video_get_event(unsigned int fd, unsigned int cmd,
struct compat_video_event __user *up)
{
struct video_event kevent;
mm_segment_t old_fs = get_fs();
int err;
set_fs(KERNEL_DS);
err = sys_ioctl(fd, cmd, (unsigned long) &kevent);
set_fs(old_fs);
if (!err) {
err = put_user(kevent.type, &up->type);
err |= put_user(kevent.timestamp, &up->timestamp);
err |= put_user(kevent.u.size.w, &up->u.size.w);
err |= put_user(kevent.u.size.h, &up->u.size.h);
err |= put_user(kevent.u.size.aspect_ratio,
&up->u.size.aspect_ratio);
if (err)
err = -EFAULT;
}
return err;
}
struct compat_video_still_picture {
compat_uptr_t iFrame;
int32_t size;
};
static int do_video_stillpicture(unsigned int fd, unsigned int cmd,
struct compat_video_still_picture __user *up)
{
struct video_still_picture __user *up_native;
compat_uptr_t fp;
int32_t size;
int err;
err = get_user(fp, &up->iFrame);
err |= get_user(size, &up->size);
if (err)
return -EFAULT;
up_native =
compat_alloc_user_space(sizeof(struct video_still_picture));
err = put_user(compat_ptr(fp), &up_native->iFrame);
err |= put_user(size, &up_native->size);
if (err)
return -EFAULT;
err = sys_ioctl(fd, cmd, (unsigned long) up_native);
return err;
}
struct compat_video_spu_palette {
int length;
compat_uptr_t palette;
};
static int do_video_set_spu_palette(unsigned int fd, unsigned int cmd,
struct compat_video_spu_palette __user *up)
{
struct video_spu_palette __user *up_native;
compat_uptr_t palp;
int length, err;
err = get_user(palp, &up->palette);
err |= get_user(length, &up->length);
up_native = compat_alloc_user_space(sizeof(struct video_spu_palette));
err = put_user(compat_ptr(palp), &up_native->palette);
err |= put_user(length, &up_native->length);
if (err)
return -EFAULT;
err = sys_ioctl(fd, cmd, (unsigned long) up_native);
return err;
}
#ifdef CONFIG_BLOCK
typedef struct sg_io_hdr32 {
compat_int_t interface_id; /* [i] 'S' for SCSI generic (required) */
compat_int_t dxfer_direction; /* [i] data transfer direction */
unsigned char cmd_len; /* [i] SCSI command length ( <= 16 bytes) */
unsigned char mx_sb_len; /* [i] max length to write to sbp */
unsigned short iovec_count; /* [i] 0 implies no scatter gather */
compat_uint_t dxfer_len; /* [i] byte count of data transfer */
compat_uint_t dxferp; /* [i], [*io] points to data transfer memory
or scatter gather list */
compat_uptr_t cmdp; /* [i], [*i] points to command to perform */
compat_uptr_t sbp; /* [i], [*o] points to sense_buffer memory */
compat_uint_t timeout; /* [i] MAX_UINT->no timeout (unit: millisec) */
compat_uint_t flags; /* [i] 0 -> default, see SG_FLAG... */
compat_int_t pack_id; /* [i->o] unused internally (normally) */
compat_uptr_t usr_ptr; /* [i->o] unused internally */
unsigned char status; /* [o] scsi status */
unsigned char masked_status; /* [o] shifted, masked scsi status */
unsigned char msg_status; /* [o] messaging level data (optional) */
unsigned char sb_len_wr; /* [o] byte count actually written to sbp */
unsigned short host_status; /* [o] errors from host adapter */
unsigned short driver_status; /* [o] errors from software driver */
compat_int_t resid; /* [o] dxfer_len - actual_transferred */
compat_uint_t duration; /* [o] time taken by cmd (unit: millisec) */
compat_uint_t info; /* [o] auxiliary information */
} sg_io_hdr32_t; /* 64 bytes long (on sparc32) */
typedef struct sg_iovec32 {
compat_uint_t iov_base;
compat_uint_t iov_len;
} sg_iovec32_t;
static int sg_build_iovec(sg_io_hdr_t __user *sgio, void __user *dxferp, u16 iovec_count)
{
sg_iovec_t __user *iov = (sg_iovec_t __user *) (sgio + 1);
sg_iovec32_t __user *iov32 = dxferp;
int i;
for (i = 0; i < iovec_count; i++) {
u32 base, len;
if (get_user(base, &iov32[i].iov_base) ||
get_user(len, &iov32[i].iov_len) ||
put_user(compat_ptr(base), &iov[i].iov_base) ||
put_user(len, &iov[i].iov_len))
return -EFAULT;
}
if (put_user(iov, &sgio->dxferp))
return -EFAULT;
return 0;
}
static int sg_ioctl_trans(unsigned int fd, unsigned int cmd,
sg_io_hdr32_t __user *sgio32)
{
sg_io_hdr_t __user *sgio;
u16 iovec_count;
u32 data;
void __user *dxferp;
int err;
int interface_id;
if (get_user(interface_id, &sgio32->interface_id))
return -EFAULT;
if (interface_id != 'S')
return sys_ioctl(fd, cmd, (unsigned long)sgio32);
if (get_user(iovec_count, &sgio32->iovec_count))
return -EFAULT;
{
void __user *top = compat_alloc_user_space(0);
void __user *new = compat_alloc_user_space(sizeof(sg_io_hdr_t) +
(iovec_count * sizeof(sg_iovec_t)));
if (new > top)
return -EINVAL;
sgio = new;
}
/* Ok, now construct. */
if (copy_in_user(&sgio->interface_id, &sgio32->interface_id,
(2 * sizeof(int)) +
(2 * sizeof(unsigned char)) +
(1 * sizeof(unsigned short)) +
(1 * sizeof(unsigned int))))
return -EFAULT;
if (get_user(data, &sgio32->dxferp))
return -EFAULT;
dxferp = compat_ptr(data);
if (iovec_count) {
if (sg_build_iovec(sgio, dxferp, iovec_count))
return -EFAULT;
} else {
if (put_user(dxferp, &sgio->dxferp))
return -EFAULT;
}
{
unsigned char __user *cmdp;
unsigned char __user *sbp;
if (get_user(data, &sgio32->cmdp))
return -EFAULT;
cmdp = compat_ptr(data);
if (get_user(data, &sgio32->sbp))
return -EFAULT;
sbp = compat_ptr(data);
if (put_user(cmdp, &sgio->cmdp) ||
put_user(sbp, &sgio->sbp))
return -EFAULT;
}
if (copy_in_user(&sgio->timeout, &sgio32->timeout,
3 * sizeof(int)))
return -EFAULT;
if (get_user(data, &sgio32->usr_ptr))
return -EFAULT;
if (put_user(compat_ptr(data), &sgio->usr_ptr))
return -EFAULT;
err = sys_ioctl(fd, cmd, (unsigned long) sgio);
if (err >= 0) {
void __user *datap;
if (copy_in_user(&sgio32->pack_id, &sgio->pack_id,
sizeof(int)) ||
get_user(datap, &sgio->usr_ptr) ||
put_user((u32)(unsigned long)datap,
&sgio32->usr_ptr) ||
copy_in_user(&sgio32->status, &sgio->status,
(4 * sizeof(unsigned char)) +
(2 * sizeof(unsigned short)) +
(3 * sizeof(int))))
err = -EFAULT;
}
return err;
}
struct compat_sg_req_info { /* used by SG_GET_REQUEST_TABLE ioctl() */
char req_state;
char orphan;
char sg_io_owned;
char problem;
int pack_id;
compat_uptr_t usr_ptr;
unsigned int duration;
int unused;
};
static int sg_grt_trans(unsigned int fd, unsigned int cmd, struct
compat_sg_req_info __user *o)
{
int err, i;
sg_req_info_t __user *r;
r = compat_alloc_user_space(sizeof(sg_req_info_t)*SG_MAX_QUEUE);
err = sys_ioctl(fd,cmd,(unsigned long)r);
if (err < 0)
return err;
for (i = 0; i < SG_MAX_QUEUE; i++) {
void __user *ptr;
int d;
if (copy_in_user(o + i, r + i, offsetof(sg_req_info_t, usr_ptr)) ||
get_user(ptr, &r[i].usr_ptr) ||
get_user(d, &r[i].duration) ||
put_user((u32)(unsigned long)(ptr), &o[i].usr_ptr) ||
put_user(d, &o[i].duration))
return -EFAULT;
}
return err;
}
#endif /* CONFIG_BLOCK */
struct sock_fprog32 {
unsigned short len;
compat_caddr_t filter;
};
#define PPPIOCSPASS32 _IOW('t', 71, struct sock_fprog32)
#define PPPIOCSACTIVE32 _IOW('t', 70, struct sock_fprog32)
static int ppp_sock_fprog_ioctl_trans(unsigned int fd, unsigned int cmd,
struct sock_fprog32 __user *u_fprog32)
{
struct sock_fprog __user *u_fprog64 = compat_alloc_user_space(sizeof(struct sock_fprog));
void __user *fptr64;
u32 fptr32;
u16 flen;
if (get_user(flen, &u_fprog32->len) ||
get_user(fptr32, &u_fprog32->filter))
return -EFAULT;
fptr64 = compat_ptr(fptr32);
if (put_user(flen, &u_fprog64->len) ||
put_user(fptr64, &u_fprog64->filter))
return -EFAULT;
if (cmd == PPPIOCSPASS32)
cmd = PPPIOCSPASS;
else
cmd = PPPIOCSACTIVE;
return sys_ioctl(fd, cmd, (unsigned long) u_fprog64);
}
struct ppp_option_data32 {
compat_caddr_t ptr;
u32 length;
compat_int_t transmit;
};
#define PPPIOCSCOMPRESS32 _IOW('t', 77, struct ppp_option_data32)
struct ppp_idle32 {
compat_time_t xmit_idle;
compat_time_t recv_idle;
};
#define PPPIOCGIDLE32 _IOR('t', 63, struct ppp_idle32)
static int ppp_gidle(unsigned int fd, unsigned int cmd,
struct ppp_idle32 __user *idle32)
{
struct ppp_idle __user *idle;
__kernel_time_t xmit, recv;
int err;
idle = compat_alloc_user_space(sizeof(*idle));
err = sys_ioctl(fd, PPPIOCGIDLE, (unsigned long) idle);
if (!err) {
if (get_user(xmit, &idle->xmit_idle) ||
get_user(recv, &idle->recv_idle) ||
put_user(xmit, &idle32->xmit_idle) ||
put_user(recv, &idle32->recv_idle))
err = -EFAULT;
}
return err;
}
static int ppp_scompress(unsigned int fd, unsigned int cmd,
struct ppp_option_data32 __user *odata32)
{
struct ppp_option_data __user *odata;
__u32 data;
void __user *datap;
odata = compat_alloc_user_space(sizeof(*odata));
if (get_user(data, &odata32->ptr))
return -EFAULT;
datap = compat_ptr(data);
if (put_user(datap, &odata->ptr))
return -EFAULT;
if (copy_in_user(&odata->length, &odata32->length,
sizeof(__u32) + sizeof(int)))
return -EFAULT;
return sys_ioctl(fd, PPPIOCSCOMPRESS, (unsigned long) odata);
}
#ifdef CONFIG_BLOCK
struct mtget32 {
compat_long_t mt_type;
compat_long_t mt_resid;
compat_long_t mt_dsreg;
compat_long_t mt_gstat;
compat_long_t mt_erreg;
compat_daddr_t mt_fileno;
compat_daddr_t mt_blkno;
};
#define MTIOCGET32 _IOR('m', 2, struct mtget32)
struct mtpos32 {
compat_long_t mt_blkno;
};
#define MTIOCPOS32 _IOR('m', 3, struct mtpos32)
static int mt_ioctl_trans(unsigned int fd, unsigned int cmd, void __user *argp)
{
mm_segment_t old_fs = get_fs();
struct mtget get;
struct mtget32 __user *umget32;
struct mtpos pos;
struct mtpos32 __user *upos32;
unsigned long kcmd;
void *karg;
int err = 0;
switch(cmd) {
case MTIOCPOS32:
kcmd = MTIOCPOS;
karg = &pos;
break;
default: /* MTIOCGET32 */
kcmd = MTIOCGET;
karg = &get;
break;
}
set_fs (KERNEL_DS);
err = sys_ioctl (fd, kcmd, (unsigned long)karg);
set_fs (old_fs);
if (err)
return err;
switch (cmd) {
case MTIOCPOS32:
upos32 = argp;
err = __put_user(pos.mt_blkno, &upos32->mt_blkno);
break;
case MTIOCGET32:
umget32 = argp;
err = __put_user(get.mt_type, &umget32->mt_type);
err |= __put_user(get.mt_resid, &umget32->mt_resid);
err |= __put_user(get.mt_dsreg, &umget32->mt_dsreg);
err |= __put_user(get.mt_gstat, &umget32->mt_gstat);
err |= __put_user(get.mt_erreg, &umget32->mt_erreg);
err |= __put_user(get.mt_fileno, &umget32->mt_fileno);
err |= __put_user(get.mt_blkno, &umget32->mt_blkno);
break;
}
return err ? -EFAULT: 0;
}
#endif /* CONFIG_BLOCK */
static int do_smb_getmountuid(unsigned int fd, unsigned int cmd,
compat_uid_t __user *argp)
{
mm_segment_t old_fs = get_fs();
__kernel_uid_t kuid;
int err;
cmd = SMB_IOC_GETMOUNTUID;
set_fs(KERNEL_DS);
err = sys_ioctl(fd, cmd, (unsigned long)&kuid);
set_fs(old_fs);
if (err >= 0)
err = put_user(kuid, argp);
return err;
}
static int ioc_settimeout(unsigned int fd, unsigned int cmd,
compat_ulong_t __user *argp)
{
return rw_long(fd, AUTOFS_IOC_SETTIMEOUT, argp);
}
/* Bluetooth ioctls */
#define HCIUARTSETPROTO _IOW('U', 200, int)
#define HCIUARTGETPROTO _IOR('U', 201, int)
#define BNEPCONNADD _IOW('B', 200, int)
#define BNEPCONNDEL _IOW('B', 201, int)
#define BNEPGETCONNLIST _IOR('B', 210, int)
#define BNEPGETCONNINFO _IOR('B', 211, int)
#define CMTPCONNADD _IOW('C', 200, int)
#define CMTPCONNDEL _IOW('C', 201, int)
#define CMTPGETCONNLIST _IOR('C', 210, int)
#define CMTPGETCONNINFO _IOR('C', 211, int)
#define HIDPCONNADD _IOW('H', 200, int)
#define HIDPCONNDEL _IOW('H', 201, int)
#define HIDPGETCONNLIST _IOR('H', 210, int)
#define HIDPGETCONNINFO _IOR('H', 211, int)
#ifdef CONFIG_BLOCK
struct raw32_config_request
{
compat_int_t raw_minor;
__u64 block_major;
__u64 block_minor;
} __attribute__((packed));
static int get_raw32_request(struct raw_config_request *req, struct raw32_config_request __user *user_req)
{
int ret;
if (!access_ok(VERIFY_READ, user_req, sizeof(struct raw32_config_request)))
return -EFAULT;
ret = __get_user(req->raw_minor, &user_req->raw_minor);
ret |= __get_user(req->block_major, &user_req->block_major);
ret |= __get_user(req->block_minor, &user_req->block_minor);
return ret ? -EFAULT : 0;
}
static int set_raw32_request(struct raw_config_request *req, struct raw32_config_request __user *user_req)
{
int ret;
if (!access_ok(VERIFY_WRITE, user_req, sizeof(struct raw32_config_request)))
return -EFAULT;
ret = __put_user(req->raw_minor, &user_req->raw_minor);
ret |= __put_user(req->block_major, &user_req->block_major);
ret |= __put_user(req->block_minor, &user_req->block_minor);
return ret ? -EFAULT : 0;
}
static int raw_ioctl(unsigned fd, unsigned cmd,
struct raw32_config_request __user *user_req)
{
int ret;
switch (cmd) {
case RAW_SETBIND:
default: { /* RAW_GETBIND */
struct raw_config_request req;
mm_segment_t oldfs = get_fs();
if ((ret = get_raw32_request(&req, user_req)))
return ret;
set_fs(KERNEL_DS);
ret = sys_ioctl(fd,cmd,(unsigned long)&req);
set_fs(oldfs);
if ((!ret) && (cmd == RAW_GETBIND)) {
ret = set_raw32_request(&req, user_req);
}
break;
}
}
return ret;
}
#endif /* CONFIG_BLOCK */
struct serial_struct32 {
compat_int_t type;
compat_int_t line;
compat_uint_t port;
compat_int_t irq;
compat_int_t flags;
compat_int_t xmit_fifo_size;
compat_int_t custom_divisor;
compat_int_t baud_base;
unsigned short close_delay;
char io_type;
char reserved_char[1];
compat_int_t hub6;
unsigned short closing_wait; /* time to wait before closing */
unsigned short closing_wait2; /* no longer used... */
compat_uint_t iomem_base;
unsigned short iomem_reg_shift;
unsigned int port_high;
/* compat_ulong_t iomap_base FIXME */
compat_int_t reserved[1];
};
static int serial_struct_ioctl(unsigned fd, unsigned cmd,
struct serial_struct32 __user *ss32)
{
typedef struct serial_struct SS;
typedef struct serial_struct32 SS32;
int err;
struct serial_struct ss;
mm_segment_t oldseg = get_fs();
__u32 udata;
unsigned int base;
if (cmd == TIOCSSERIAL) {
if (!access_ok(VERIFY_READ, ss32, sizeof(SS32)))
return -EFAULT;
if (__copy_from_user(&ss, ss32, offsetof(SS32, iomem_base)))
return -EFAULT;
if (__get_user(udata, &ss32->iomem_base))
return -EFAULT;
ss.iomem_base = compat_ptr(udata);
if (__get_user(ss.iomem_reg_shift, &ss32->iomem_reg_shift) ||
__get_user(ss.port_high, &ss32->port_high))
return -EFAULT;
ss.iomap_base = 0UL;
}
set_fs(KERNEL_DS);
err = sys_ioctl(fd,cmd,(unsigned long)(&ss));
set_fs(oldseg);
if (cmd == TIOCGSERIAL && err >= 0) {
if (!access_ok(VERIFY_WRITE, ss32, sizeof(SS32)))
return -EFAULT;
if (__copy_to_user(ss32,&ss,offsetof(SS32,iomem_base)))
return -EFAULT;
base = (unsigned long)ss.iomem_base >> 32 ?
0xffffffff : (unsigned)(unsigned long)ss.iomem_base;
if (__put_user(base, &ss32->iomem_base) ||
__put_user(ss.iomem_reg_shift, &ss32->iomem_reg_shift) ||
__put_user(ss.port_high, &ss32->port_high))
return -EFAULT;
}
return err;
}
/*
* I2C layer ioctls
*/
struct i2c_msg32 {
u16 addr;
u16 flags;
u16 len;
compat_caddr_t buf;
};
struct i2c_rdwr_ioctl_data32 {
compat_caddr_t msgs; /* struct i2c_msg __user *msgs */
u32 nmsgs;
};
struct i2c_smbus_ioctl_data32 {
u8 read_write;
u8 command;
u32 size;
compat_caddr_t data; /* union i2c_smbus_data *data */
};
struct i2c_rdwr_aligned {
struct i2c_rdwr_ioctl_data cmd;
struct i2c_msg msgs[0];
};
static int do_i2c_rdwr_ioctl(unsigned int fd, unsigned int cmd,
struct i2c_rdwr_ioctl_data32 __user *udata)
{
struct i2c_rdwr_aligned __user *tdata;
struct i2c_msg __user *tmsgs;
struct i2c_msg32 __user *umsgs;
compat_caddr_t datap;
int nmsgs, i;
if (get_user(nmsgs, &udata->nmsgs))
return -EFAULT;
if (nmsgs > I2C_RDRW_IOCTL_MAX_MSGS)
return -EINVAL;
if (get_user(datap, &udata->msgs))
return -EFAULT;
umsgs = compat_ptr(datap);
tdata = compat_alloc_user_space(sizeof(*tdata) +
nmsgs * sizeof(struct i2c_msg));
tmsgs = &tdata->msgs[0];
if (put_user(nmsgs, &tdata->cmd.nmsgs) ||
put_user(tmsgs, &tdata->cmd.msgs))
return -EFAULT;
for (i = 0; i < nmsgs; i++) {
if (copy_in_user(&tmsgs[i].addr, &umsgs[i].addr, 3*sizeof(u16)))
return -EFAULT;
if (get_user(datap, &umsgs[i].buf) ||
put_user(compat_ptr(datap), &tmsgs[i].buf))
return -EFAULT;
}
return sys_ioctl(fd, cmd, (unsigned long)tdata);
}
static int do_i2c_smbus_ioctl(unsigned int fd, unsigned int cmd,
struct i2c_smbus_ioctl_data32 __user *udata)
{
struct i2c_smbus_ioctl_data __user *tdata;
compat_caddr_t datap;
tdata = compat_alloc_user_space(sizeof(*tdata));
if (tdata == NULL)
return -ENOMEM;
if (!access_ok(VERIFY_WRITE, tdata, sizeof(*tdata)))
return -EFAULT;
if (!access_ok(VERIFY_READ, udata, sizeof(*udata)))
return -EFAULT;
if (__copy_in_user(&tdata->read_write, &udata->read_write, 2 * sizeof(u8)))
return -EFAULT;
if (__copy_in_user(&tdata->size, &udata->size, 2 * sizeof(u32)))
return -EFAULT;
if (__get_user(datap, &udata->data) ||
__put_user(compat_ptr(datap), &tdata->data))
return -EFAULT;
return sys_ioctl(fd, cmd, (unsigned long)tdata);
}
#define RTC_IRQP_READ32 _IOR('p', 0x0b, compat_ulong_t)
#define RTC_IRQP_SET32 _IOW('p', 0x0c, compat_ulong_t)
#define RTC_EPOCH_READ32 _IOR('p', 0x0d, compat_ulong_t)
#define RTC_EPOCH_SET32 _IOW('p', 0x0e, compat_ulong_t)
static int rtc_ioctl(unsigned fd, unsigned cmd, void __user *argp)
{
mm_segment_t oldfs = get_fs();
compat_ulong_t val32;
unsigned long kval;
int ret;
switch (cmd) {
case RTC_IRQP_READ32:
case RTC_EPOCH_READ32:
set_fs(KERNEL_DS);
ret = sys_ioctl(fd, (cmd == RTC_IRQP_READ32) ?
RTC_IRQP_READ : RTC_EPOCH_READ,
(unsigned long)&kval);
set_fs(oldfs);
if (ret)
return ret;
val32 = kval;
return put_user(val32, (unsigned int __user *)argp);
case RTC_IRQP_SET32:
return sys_ioctl(fd, RTC_IRQP_SET, (unsigned long)argp);
case RTC_EPOCH_SET32:
return sys_ioctl(fd, RTC_EPOCH_SET, (unsigned long)argp);
}
return -ENOIOCTLCMD;
}
/* on ia32 l_start is on a 32-bit boundary */
#if defined(CONFIG_IA64) || defined(CONFIG_X86_64)
struct space_resv_32 {
__s16 l_type;
__s16 l_whence;
__s64 l_start __attribute__((packed));
/* len == 0 means until end of file */
__s64 l_len __attribute__((packed));
__s32 l_sysid;
__u32 l_pid;
__s32 l_pad[4]; /* reserve area */
};
#define FS_IOC_RESVSP_32 _IOW ('X', 40, struct space_resv_32)
#define FS_IOC_RESVSP64_32 _IOW ('X', 42, struct space_resv_32)
/* just account for different alignment */
static int compat_ioctl_preallocate(struct file *file,
struct space_resv_32 __user *p32)
{
struct space_resv __user *p = compat_alloc_user_space(sizeof(*p));
if (copy_in_user(&p->l_type, &p32->l_type, sizeof(s16)) ||
copy_in_user(&p->l_whence, &p32->l_whence, sizeof(s16)) ||
copy_in_user(&p->l_start, &p32->l_start, sizeof(s64)) ||
copy_in_user(&p->l_len, &p32->l_len, sizeof(s64)) ||
copy_in_user(&p->l_sysid, &p32->l_sysid, sizeof(s32)) ||
copy_in_user(&p->l_pid, &p32->l_pid, sizeof(u32)) ||
copy_in_user(&p->l_pad, &p32->l_pad, 4*sizeof(u32)))
return -EFAULT;
return ioctl_preallocate(file, p);
}
#endif
/*
* simple reversible transform to make our table more evenly
* distributed after sorting.
*/
#define XFORM(i) (((i) ^ ((i) << 27) ^ ((i) << 17)) & 0xffffffff)
#define COMPATIBLE_IOCTL(cmd) XFORM(cmd),
/* ioctl should not be warned about even if it's not implemented.
Valid reasons to use this:
- It is implemented with ->compat_ioctl on some device, but programs
call it on others too.
- The ioctl is not implemented in the native kernel, but programs
call it commonly anyways.
Most other reasons are not valid. */
#define IGNORE_IOCTL(cmd) COMPATIBLE_IOCTL(cmd)
static unsigned int ioctl_pointer[] = {
/* compatible ioctls first */
COMPATIBLE_IOCTL(0x4B50) /* KDGHWCLK - not in the kernel, but don't complain */
COMPATIBLE_IOCTL(0x4B51) /* KDSHWCLK - not in the kernel, but don't complain */
/* Big T */
COMPATIBLE_IOCTL(TCGETA)
COMPATIBLE_IOCTL(TCSETA)
COMPATIBLE_IOCTL(TCSETAW)
COMPATIBLE_IOCTL(TCSETAF)
COMPATIBLE_IOCTL(TCSBRK)
COMPATIBLE_IOCTL(TCXONC)
COMPATIBLE_IOCTL(TCFLSH)
COMPATIBLE_IOCTL(TCGETS)
COMPATIBLE_IOCTL(TCSETS)
COMPATIBLE_IOCTL(TCSETSW)
COMPATIBLE_IOCTL(TCSETSF)
COMPATIBLE_IOCTL(TIOCLINUX)
COMPATIBLE_IOCTL(TIOCSBRK)
COMPATIBLE_IOCTL(TIOCCBRK)
COMPATIBLE_IOCTL(TIOCGSID)
COMPATIBLE_IOCTL(TIOCGICOUNT)
/* Little t */
COMPATIBLE_IOCTL(TIOCGETD)
COMPATIBLE_IOCTL(TIOCSETD)
COMPATIBLE_IOCTL(TIOCEXCL)
COMPATIBLE_IOCTL(TIOCNXCL)
COMPATIBLE_IOCTL(TIOCCONS)
COMPATIBLE_IOCTL(TIOCGSOFTCAR)
COMPATIBLE_IOCTL(TIOCSSOFTCAR)
COMPATIBLE_IOCTL(TIOCSWINSZ)
COMPATIBLE_IOCTL(TIOCGWINSZ)
COMPATIBLE_IOCTL(TIOCMGET)
COMPATIBLE_IOCTL(TIOCMBIC)
COMPATIBLE_IOCTL(TIOCMBIS)
COMPATIBLE_IOCTL(TIOCMSET)
COMPATIBLE_IOCTL(TIOCPKT)
COMPATIBLE_IOCTL(TIOCNOTTY)
COMPATIBLE_IOCTL(TIOCSTI)
COMPATIBLE_IOCTL(TIOCOUTQ)
COMPATIBLE_IOCTL(TIOCSPGRP)
COMPATIBLE_IOCTL(TIOCGPGRP)
COMPATIBLE_IOCTL(TIOCGPTN)
COMPATIBLE_IOCTL(TIOCSPTLCK)
COMPATIBLE_IOCTL(TIOCSERGETLSR)
#ifdef TCGETS2
COMPATIBLE_IOCTL(TCGETS2)
COMPATIBLE_IOCTL(TCSETS2)
COMPATIBLE_IOCTL(TCSETSW2)
COMPATIBLE_IOCTL(TCSETSF2)
#endif
/* Little f */
COMPATIBLE_IOCTL(FIOCLEX)
COMPATIBLE_IOCTL(FIONCLEX)
COMPATIBLE_IOCTL(FIOASYNC)
COMPATIBLE_IOCTL(FIONBIO)
COMPATIBLE_IOCTL(FIONREAD) /* This is also TIOCINQ */
COMPATIBLE_IOCTL(FS_IOC_FIEMAP)
/* 0x00 */
COMPATIBLE_IOCTL(FIBMAP)
COMPATIBLE_IOCTL(FIGETBSZ)
/* 'X' - originally XFS but some now in the VFS */
COMPATIBLE_IOCTL(FIFREEZE)
COMPATIBLE_IOCTL(FITHAW)
COMPATIBLE_IOCTL(KDGETKEYCODE)
COMPATIBLE_IOCTL(KDSETKEYCODE)
COMPATIBLE_IOCTL(KDGKBTYPE)
COMPATIBLE_IOCTL(KDGETMODE)
COMPATIBLE_IOCTL(KDGKBMODE)
COMPATIBLE_IOCTL(KDGKBMETA)
COMPATIBLE_IOCTL(KDGKBENT)
COMPATIBLE_IOCTL(KDSKBENT)
COMPATIBLE_IOCTL(KDGKBSENT)
COMPATIBLE_IOCTL(KDSKBSENT)
COMPATIBLE_IOCTL(KDGKBDIACR)
COMPATIBLE_IOCTL(KDSKBDIACR)