diff options
Diffstat (limited to 'fs/compat_ioctl.c')
| -rw-r--r-- | fs/compat_ioctl.c | 211 |
1 files changed, 83 insertions, 128 deletions
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index b4873ae84ca..ae1f1e699ad 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -117,33 +117,34 @@ #include <asm/fbio.h> #endif -static int w_long(unsigned int fd, unsigned int cmd, unsigned long arg) +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, (u32 __user *)compat_ptr(arg))) + if (!err && put_user(val, argp)) return -EFAULT; return err; } - -static int rw_long(unsigned int fd, unsigned int cmd, unsigned long arg) + +static int rw_long(unsigned int fd, unsigned int cmd, + compat_ulong_t __user *argp) { mm_segment_t old_fs = get_fs(); - u32 __user *argptr = compat_ptr(arg); int err; unsigned long val; - - if(get_user(val, argptr)) + + 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, argptr)) + if (!err && put_user(val, argp)) return -EFAULT; return err; } @@ -157,7 +158,8 @@ struct compat_video_event { } u; }; -static int do_video_get_event(unsigned int fd, unsigned int cmd, unsigned long arg) +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(); @@ -168,8 +170,6 @@ static int do_video_get_event(unsigned int fd, unsigned int cmd, unsigned long a set_fs(old_fs); if (!err) { - struct compat_video_event __user *up = compat_ptr(arg); - 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); @@ -188,15 +188,14 @@ struct compat_video_still_picture { int32_t size; }; -static int do_video_stillpicture(unsigned int fd, unsigned int cmd, unsigned long arg) +static int do_video_stillpicture(unsigned int fd, unsigned int cmd, + struct compat_video_still_picture __user *up) { - struct compat_video_still_picture __user *up; struct video_still_picture __user *up_native; compat_uptr_t fp; int32_t size; int err; - up = (struct compat_video_still_picture __user *) arg; err = get_user(fp, &up->iFrame); err |= get_user(size, &up->size); if (err) @@ -220,14 +219,13 @@ struct compat_video_spu_palette { compat_uptr_t palette; }; -static int do_video_set_spu_palette(unsigned int fd, unsigned int cmd, unsigned long arg) +static int do_video_set_spu_palette(unsigned int fd, unsigned int cmd, + struct compat_video_spu_palette __user *up) { - struct compat_video_spu_palette __user *up; struct video_spu_palette __user *up_native; compat_uptr_t palp; int length, err; - up = (struct compat_video_spu_palette __user *) arg; err = get_user(palp, &up->palette); err |= get_user(length, &up->length); @@ -295,16 +293,15 @@ static int sg_build_iovec(sg_io_hdr_t __user *sgio, void __user *dxferp, u16 iov return 0; } -static int sg_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg) +static int sg_ioctl_trans(unsigned int fd, unsigned int cmd, + sg_io_hdr32_t __user *sgio32) { sg_io_hdr_t __user *sgio; - sg_io_hdr32_t __user *sgio32; u16 iovec_count; u32 data; void __user *dxferp; int err; - sgio32 = compat_ptr(arg); if (get_user(iovec_count, &sgio32->iovec_count)) return -EFAULT; @@ -394,11 +391,11 @@ struct compat_sg_req_info { /* used by SG_GET_REQUEST_TABLE ioctl() */ int unused; }; -static int sg_grt_trans(unsigned int fd, unsigned int cmd, unsigned long arg) +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; - struct compat_sg_req_info __user *o = (void __user *)arg; r = compat_alloc_user_space(sizeof(sg_req_info_t)*SG_MAX_QUEUE); err = sys_ioctl(fd,cmd,(unsigned long)r); if (err < 0) @@ -426,9 +423,9 @@ struct sock_fprog32 { #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, unsigned long arg) +static int ppp_sock_fprog_ioctl_trans(unsigned int fd, unsigned int cmd, + struct sock_fprog32 __user *u_fprog32) { - struct sock_fprog32 __user *u_fprog32 = compat_ptr(arg); struct sock_fprog __user *u_fprog64 = compat_alloc_user_space(sizeof(struct sock_fprog)); void __user *fptr64; u32 fptr32; @@ -465,15 +462,14 @@ struct ppp_idle32 { }; #define PPPIOCGIDLE32 _IOR('t', 63, struct ppp_idle32) -static int ppp_gidle(unsigned int fd, unsigned int cmd, unsigned long arg) +static int ppp_gidle(unsigned int fd, unsigned int cmd, + struct ppp_idle32 __user *idle32) { struct ppp_idle __user *idle; - struct ppp_idle32 __user *idle32; __kernel_time_t xmit, recv; int err; idle = compat_alloc_user_space(sizeof(*idle)); - idle32 = compat_ptr(arg); err = sys_ioctl(fd, PPPIOCGIDLE, (unsigned long) idle); @@ -487,15 +483,14 @@ static int ppp_gidle(unsigned int fd, unsigned int cmd, unsigned long arg) return err; } -static int ppp_scompress(unsigned int fd, unsigned int cmd, unsigned long arg) +static int ppp_scompress(unsigned int fd, unsigned int cmd, + struct ppp_option_data32 __user *odata32) { struct ppp_option_data __user *odata; - struct ppp_option_data32 __user *odata32; __u32 data; void __user *datap; odata = compat_alloc_user_space(sizeof(*odata)); - odata32 = compat_ptr(arg); if (get_user(data, &odata32->ptr)) return -EFAULT; @@ -511,35 +506,6 @@ static int ppp_scompress(unsigned int fd, unsigned int cmd, unsigned long arg) return sys_ioctl(fd, PPPIOCSCOMPRESS, (unsigned long) odata); } -static int ppp_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - int err; - - switch (cmd) { - case PPPIOCGIDLE32: - err = ppp_gidle(fd, cmd, arg); - break; - - case PPPIOCSCOMPRESS32: - err = ppp_scompress(fd, cmd, arg); - break; - - default: - do { - static int count; - if (++count <= 20) - printk("ppp_ioctl: Unknown cmd fd(%d) " - "cmd(%08x) arg(%08x)\n", - (int)fd, (unsigned int)cmd, (unsigned int)arg); - } while(0); - err = -EINVAL; - break; - }; - - return err; -} - - #ifdef CONFIG_BLOCK struct mtget32 { compat_long_t mt_type; @@ -557,7 +523,7 @@ struct mtpos32 { }; #define MTIOCPOS32 _IOR('m', 3, struct mtpos32) -static int mt_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg) +static int mt_ioctl_trans(unsigned int fd, unsigned int cmd, void __user *argp) { mm_segment_t old_fs = get_fs(); struct mtget get; @@ -577,15 +543,6 @@ static int mt_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg) kcmd = MTIOCGET; karg = &get; break; - default: - do { - static int count; - if (++count <= 20) - printk("mt_ioctl: Unknown cmd fd(%d) " - "cmd(%08x) arg(%08x)\n", - (int)fd, (unsigned int)cmd, (unsigned int)arg); - } while(0); - return -EINVAL; } set_fs (KERNEL_DS); err = sys_ioctl (fd, kcmd, (unsigned long)karg); @@ -594,11 +551,11 @@ static int mt_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg) return err; switch (cmd) { case MTIOCPOS32: - upos32 = compat_ptr(arg); + upos32 = argp; err = __put_user(pos.mt_blkno, &upos32->mt_blkno); break; case MTIOCGET32: - umget32 = compat_ptr(arg); + 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); @@ -613,7 +570,8 @@ static int mt_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg) #endif /* CONFIG_BLOCK */ -static int do_smb_getmountuid(unsigned int fd, unsigned int cmd, unsigned long arg) +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; @@ -626,14 +584,15 @@ static int do_smb_getmountuid(unsigned int fd, unsigned int cmd, unsigned long a set_fs(old_fs); if (err >= 0) - err = put_user(kuid, (compat_uid_t __user *)compat_ptr(arg)); + err = put_user(kuid, argp); return err; } -static int ioc_settimeout(unsigned int fd, unsigned int cmd, unsigned long arg) +static int ioc_settimeout(unsigned int fd, unsigned int cmd, + compat_ulong_t __user *argp) { - return rw_long(fd, AUTOFS_IOC_SETTIMEOUT, arg); + return rw_long(fd, AUTOFS_IOC_SETTIMEOUT, argp); } /* Bluetooth ioctls */ @@ -691,7 +650,8 @@ static int set_raw32_request(struct raw_config_request *req, struct raw32_config return ret ? -EFAULT : 0; } -static int raw_ioctl(unsigned fd, unsigned cmd, unsigned long arg) +static int raw_ioctl(unsigned fd, unsigned cmd, + struct raw32_config_request __user *user_req) { int ret; @@ -699,7 +659,6 @@ static int raw_ioctl(unsigned fd, unsigned cmd, unsigned long arg) case RAW_SETBIND: case RAW_GETBIND: { struct raw_config_request req; - struct raw32_config_request __user *user_req = compat_ptr(arg); mm_segment_t oldfs = get_fs(); if ((ret = get_raw32_request(&req, user_req))) @@ -714,9 +673,6 @@ static int raw_ioctl(unsigned fd, unsigned cmd, unsigned long arg) } break; } - default: - ret = sys_ioctl(fd, cmd, arg); - break; } return ret; } @@ -744,11 +700,11 @@ struct serial_struct32 { compat_int_t reserved[1]; }; -static int serial_struct_ioctl(unsigned fd, unsigned cmd, unsigned long arg) +static int serial_struct_ioctl(unsigned fd, unsigned cmd, + struct serial_struct32 __user *ss32) { typedef struct serial_struct SS; typedef struct serial_struct32 SS32; - struct serial_struct32 __user *ss32 = compat_ptr(arg); int err; struct serial_struct ss; mm_segment_t oldseg = get_fs(); @@ -798,9 +754,9 @@ struct usbdevfs_ctrltransfer32 { #define USBDEVFS_CONTROL32 _IOWR('U', 0, struct usbdevfs_ctrltransfer32) -static int do_usbdevfs_control(unsigned int fd, unsigned int cmd, unsigned long arg) +static int do_usbdevfs_control(unsigned int fd, unsigned int cmd, + struct usbdevfs_ctrltransfer32 __user *p32) { - struct usbdevfs_ctrltransfer32 __user *p32 = compat_ptr(arg); struct usbdevfs_ctrltransfer __user *p; __u32 udata; p = compat_alloc_user_space(sizeof(*p)); @@ -821,9 +777,9 @@ struct usbdevfs_bulktransfer32 { #define USBDEVFS_BULK32 _IOWR('U', 2, struct usbdevfs_bulktransfer32) -static int do_usbdevfs_bulk(unsigned int fd, unsigned int cmd, unsigned long arg) +static int do_usbdevfs_bulk(unsigned int fd, unsigned int cmd, + struct usbdevfs_bulktransfer32 __user *p32) { - struct usbdevfs_bulktransfer32 __user *p32 = compat_ptr(arg); struct usbdevfs_bulktransfer __user *p; compat_uint_t n; compat_caddr_t addr; @@ -852,16 +808,14 @@ struct usbdevfs_disconnectsignal32 { #define USBDEVFS_DISCSIGNAL32 _IOR('U', 14, struct usbdevfs_disconnectsignal32) -static int do_usbdevfs_discsignal(unsigned int fd, unsigned int cmd, unsigned long arg) +static int do_usbdevfs_discsignal(unsigned int fd, unsigned int cmd, + struct usbdevfs_disconnectsignal32 __user *udis) { struct usbdevfs_disconnectsignal kdis; - struct usbdevfs_disconnectsignal32 __user *udis; mm_segment_t old_fs; u32 uctx; int err; - udis = compat_ptr(arg); - if (get_user(kdis.signr, &udis->signr) || __get_user(uctx, &udis->context)) return -EFAULT; @@ -904,9 +858,9 @@ struct i2c_rdwr_aligned { struct i2c_msg msgs[0]; }; -static int do_i2c_rdwr_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg) +static int do_i2c_rdwr_ioctl(unsigned int fd, unsigned int cmd, + struct i2c_rdwr_ioctl_data32 __user *udata) { - struct i2c_rdwr_ioctl_data32 __user *udata = compat_ptr(arg); struct i2c_rdwr_aligned __user *tdata; struct i2c_msg __user *tmsgs; struct i2c_msg32 __user *umsgs; @@ -940,10 +894,10 @@ static int do_i2c_rdwr_ioctl(unsigned int fd, unsigned int cmd, unsigned long ar return sys_ioctl(fd, cmd, (unsigned long)tdata); } -static int do_i2c_smbus_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg) +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; - struct i2c_smbus_ioctl_data32 __user *udata; compat_caddr_t datap; tdata = compat_alloc_user_space(sizeof(*tdata)); @@ -952,7 +906,6 @@ static int do_i2c_smbus_ioctl(unsigned int fd, unsigned int cmd, unsigned long a if (!access_ok(VERIFY_WRITE, tdata, sizeof(*tdata))) return -EFAULT; - udata = compat_ptr(arg); if (!access_ok(VERIFY_READ, udata, sizeof(*udata))) return -EFAULT; @@ -972,7 +925,7 @@ static int do_i2c_smbus_ioctl(unsigned int fd, unsigned int cmd, unsigned long a #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, unsigned long arg) +static int rtc_ioctl(unsigned fd, unsigned cmd, void __user *argp) { mm_segment_t oldfs = get_fs(); compat_ulong_t val32; @@ -990,21 +943,20 @@ static int rtc_ioctl(unsigned fd, unsigned cmd, unsigned long arg) if (ret) return ret; val32 = kval; - return put_user(val32, (unsigned int __user *)arg); + return put_user(val32, (unsigned int __user *)argp); case RTC_IRQP_SET32: - return sys_ioctl(fd, RTC_IRQP_SET, arg); + return sys_ioctl(fd, RTC_IRQP_SET, (unsigned long)argp); case RTC_EPOCH_SET32: - return sys_ioctl(fd, RTC_EPOCH_SET, arg); - default: - /* unreached */ - return -ENOIOCTLCMD; + return sys_ioctl(fd, RTC_EPOCH_SET, (unsigned long)argp); } + + return -ENOIOCTLCMD; } static int -lp_timeout_trans(unsigned int fd, unsigned int cmd, unsigned long arg) +lp_timeout_trans(unsigned int fd, unsigned int cmd, + struct compat_timeval __user *tc) { - struct compat_timeval __user *tc = (struct compat_timeval __user *)arg; struct timeval __user *tn = compat_alloc_user_space(sizeof(struct timeval)); struct timeval ts; if (get_user(ts.tv_sec, &tc->tv_sec) || @@ -1032,9 +984,9 @@ 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, unsigned long arg) +static int compat_ioctl_preallocate(struct file *file, + struct space_resv_32 __user *p32) { - struct space_resv_32 __user *p32 = compat_ptr(arg); struct space_resv __user *p = compat_alloc_user_space(sizeof(*p)); if (copy_in_user(&p->l_type, &p32->l_type, sizeof(s16)) || @@ -1720,69 +1672,72 @@ IGNORE_IOCTL(FBIOGCURSOR32) static long do_ioctl_trans(int fd, unsigned int cmd, unsigned long arg, struct file *file) { + void __user *argp = compat_ptr(arg); + switch (cmd) { case PPPIOCGIDLE32: + return ppp_gidle(fd, cmd, argp); case PPPIOCSCOMPRESS32: - return ppp_ioctl_trans(fd, cmd, arg); + return ppp_scompress(fd, cmd, argp); case PPPIOCSPASS32: case PPPIOCSACTIVE32: - return ppp_sock_fprog_ioctl_trans(fd, cmd, arg); + return ppp_sock_fprog_ioctl_trans(fd, cmd, argp); #ifdef CONFIG_BLOCK case SG_IO: - return sg_ioctl_trans(fd, cmd, arg); + return sg_ioctl_trans(fd, cmd, argp); case SG_GET_REQUEST_TABLE: - return sg_grt_trans(fd, cmd, arg); + return sg_grt_trans(fd, cmd, argp); case MTIOCGET32: case MTIOCPOS32: - return mt_ioctl_trans(fd, cmd, arg); + return mt_ioctl_trans(fd, cmd, argp); /* Raw devices */ case RAW_SETBIND: case RAW_GETBIND: - return raw_ioctl(fd, cmd, arg); + return raw_ioctl(fd, cmd, argp); #endif #define AUTOFS_IOC_SETTIMEOUT32 _IOWR(0x93,0x64,unsigned int) case AUTOFS_IOC_SETTIMEOUT32: - return ioc_settimeout(fd, cmd, arg); + return ioc_settimeout(fd, cmd, argp); /* One SMB ioctl needs translations. */ #define SMB_IOC_GETMOUNTUID_32 _IOR('u', 1, compat_uid_t) case SMB_IOC_GETMOUNTUID_32: - return do_smb_getmountuid(fd, cmd, arg); + return do_smb_getmountuid(fd, cmd, argp); /* Serial */ case TIOCGSERIAL: case TIOCSSERIAL: - return serial_struct_ioctl(fd, cmd, arg); + return serial_struct_ioctl(fd, cmd, argp); /* Usbdevfs */ case USBDEVFS_CONTROL32: - return do_usbdevfs_control(fd, cmd, arg); + return do_usbdevfs_control(fd, cmd, argp); case USBDEVFS_BULK32: - return do_usbdevfs_bulk(fd, cmd, arg); + return do_usbdevfs_bulk(fd, cmd, argp); case USBDEVFS_DISCSIGNAL32: - return do_usbdevfs_discsignal(fd, cmd, arg); + return do_usbdevfs_discsignal(fd, cmd, argp); /* i2c */ case I2C_FUNCS: - return w_long(fd, cmd, arg); + return w_long(fd, cmd, argp); case I2C_RDWR: - return do_i2c_rdwr_ioctl(fd, cmd, arg); + return do_i2c_rdwr_ioctl(fd, cmd, argp); case I2C_SMBUS: - return do_i2c_smbus_ioctl(fd, cmd, arg); + return do_i2c_smbus_ioctl(fd, cmd, argp); /* Not implemented in the native kernel */ case RTC_IRQP_READ32: case RTC_IRQP_SET32: case RTC_EPOCH_READ32: case RTC_EPOCH_SET32: - return rtc_ioctl(fd, cmd, arg); + return rtc_ioctl(fd, cmd, argp); /* dvb */ case VIDEO_GET_EVENT: - return do_video_get_event(fd, cmd, arg); + return do_video_get_event(fd, cmd, argp); case VIDEO_STILLPICTURE: - return do_video_stillpicture(fd, cmd, arg); + return do_video_stillpicture(fd, cmd, argp); case VIDEO_SET_SPU_PALETTE: - return do_video_set_spu_palette(fd, cmd, arg); + return do_video_set_spu_palette(fd, cmd, argp); /* lp */ case LPSETTIMEOUT: - return lp_timeout_trans(fd, cmd, arg); + return lp_timeout_trans(fd, cmd, argp); } /* @@ -1907,7 +1862,7 @@ asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, #if defined(CONFIG_IA64) || defined(CONFIG_X86_64) case FS_IOC_RESVSP_32: case FS_IOC_RESVSP64_32: - error = compat_ioctl_preallocate(filp, arg); + error = compat_ioctl_preallocate(filp, compat_ptr(arg)); goto out_fput; #else case FS_IOC_RESVSP: |