diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/compat_ioctl.c | 135 |
1 files changed, 81 insertions, 54 deletions
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index a383424f1b25..0cd76e9e843a 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -635,12 +635,6 @@ static int do_smb_getmountuid(unsigned int fd, unsigned int cmd, unsigned long a return err; } -static __used int -ret_einval(unsigned int fd, unsigned int cmd, unsigned long arg) -{ - return -EINVAL; -} - static int ioc_settimeout(unsigned int fd, unsigned int cmd, unsigned long arg) { return rw_long(fd, AUTOFS_IOC_SETTIMEOUT, arg); @@ -1241,6 +1235,8 @@ COMPATIBLE_IOCTL(MTIOCTOP) /* Socket level stuff */ COMPATIBLE_IOCTL(FIOQSIZE) #ifdef CONFIG_BLOCK +/* loop */ +IGNORE_IOCTL(LOOP_CLR_FD) /* SG stuff */ COMPATIBLE_IOCTL(SG_SET_TIMEOUT) COMPATIBLE_IOCTL(SG_GET_TIMEOUT) @@ -1699,35 +1695,6 @@ COMPATIBLE_IOCTL(JSIOCGAXES) COMPATIBLE_IOCTL(JSIOCGBUTTONS) COMPATIBLE_IOCTL(JSIOCGNAME(0)) -/* now things that need handlers */ -#ifdef CONFIG_BLOCK -HANDLE_IOCTL(SG_IO,sg_ioctl_trans) -HANDLE_IOCTL(SG_GET_REQUEST_TABLE, sg_grt_trans) -#endif -HANDLE_IOCTL(PPPIOCGIDLE32, ppp_ioctl_trans) -HANDLE_IOCTL(PPPIOCSCOMPRESS32, ppp_ioctl_trans) -HANDLE_IOCTL(PPPIOCSPASS32, ppp_sock_fprog_ioctl_trans) -HANDLE_IOCTL(PPPIOCSACTIVE32, ppp_sock_fprog_ioctl_trans) -#ifdef CONFIG_BLOCK -HANDLE_IOCTL(MTIOCGET32, mt_ioctl_trans) -HANDLE_IOCTL(MTIOCPOS32, mt_ioctl_trans) -#endif -#define AUTOFS_IOC_SETTIMEOUT32 _IOWR(0x93,0x64,unsigned int) -HANDLE_IOCTL(AUTOFS_IOC_SETTIMEOUT32, ioc_settimeout) -/* One SMB ioctl needs translations. */ -#define SMB_IOC_GETMOUNTUID_32 _IOR('u', 1, compat_uid_t) -HANDLE_IOCTL(SMB_IOC_GETMOUNTUID_32, do_smb_getmountuid) -/* block stuff */ -#ifdef CONFIG_BLOCK -/* loop */ -IGNORE_IOCTL(LOOP_CLR_FD) -/* Raw devices */ -HANDLE_IOCTL(RAW_SETBIND, raw_ioctl) -HANDLE_IOCTL(RAW_GETBIND, raw_ioctl) -#endif -/* Serial */ -HANDLE_IOCTL(TIOCGSERIAL, serial_struct_ioctl) -HANDLE_IOCTL(TIOCSSERIAL, serial_struct_ioctl) #ifdef TIOCGLTC COMPATIBLE_IOCTL(TIOCGLTC) COMPATIBLE_IOCTL(TIOCSLTC) @@ -1743,24 +1710,7 @@ COMPATIBLE_IOCTL(TIOCSTART) COMPATIBLE_IOCTL(TIOCSTOP) #endif /* Usbdevfs */ -HANDLE_IOCTL(USBDEVFS_CONTROL32, do_usbdevfs_control) -HANDLE_IOCTL(USBDEVFS_BULK32, do_usbdevfs_bulk) -HANDLE_IOCTL(USBDEVFS_DISCSIGNAL32, do_usbdevfs_discsignal) COMPATIBLE_IOCTL(USBDEVFS_IOCTL32) -/* i2c */ -HANDLE_IOCTL(I2C_FUNCS, w_long) -HANDLE_IOCTL(I2C_RDWR, do_i2c_rdwr_ioctl) -HANDLE_IOCTL(I2C_SMBUS, do_i2c_smbus_ioctl) -/* Not implemented in the native kernel */ -HANDLE_IOCTL(RTC_IRQP_READ32, rtc_ioctl) -HANDLE_IOCTL(RTC_IRQP_SET32, rtc_ioctl) -HANDLE_IOCTL(RTC_EPOCH_READ32, rtc_ioctl) -HANDLE_IOCTL(RTC_EPOCH_SET32, rtc_ioctl) - -/* dvb */ -HANDLE_IOCTL(VIDEO_GET_EVENT, do_video_get_event) -HANDLE_IOCTL(VIDEO_STILLPICTURE, do_video_stillpicture) -HANDLE_IOCTL(VIDEO_SET_SPU_PALETTE, do_video_set_spu_palette) /* parport */ COMPATIBLE_IOCTL(LPTIME) @@ -1774,7 +1724,6 @@ COMPATIBLE_IOCTL(LPGETSTATUS) COMPATIBLE_IOCTL(LPRESET) /*LPGETSTATS not implemented, but no kernels seem to compile it in anyways*/ COMPATIBLE_IOCTL(LPGETFLAGS) -HANDLE_IOCTL(LPSETTIMEOUT, lp_timeout_trans) /* fat 'r' ioctls. These are handled by fat with ->compat_ioctl, but we don't want warnings on other file systems. So declare @@ -1810,6 +1759,83 @@ static inline unsigned long ioctl32_hash(unsigned long cmd) return (((cmd >> 6) ^ (cmd >> 4) ^ cmd)) % IOCTL_HASHSIZE; } +/* + * Convert common ioctl arguments based on their command number + * + * Please do not add any code in here. Instead, implement + * a compat_ioctl operation in the place that handleѕ the + * ioctl for the native case. + */ +static long do_ioctl_trans(int fd, unsigned int cmd, + unsigned long arg, struct file *file) +{ + switch (cmd) { + case PPPIOCGIDLE32: + case PPPIOCSCOMPRESS32: + return ppp_ioctl_trans(fd, cmd, arg); + case PPPIOCSPASS32: + case PPPIOCSACTIVE32: + return ppp_sock_fprog_ioctl_trans(fd, cmd, arg); +#ifdef CONFIG_BLOCK + case SG_IO: + return sg_ioctl_trans(fd, cmd, arg); + case SG_GET_REQUEST_TABLE: + return sg_grt_trans(fd, cmd, arg); + case MTIOCGET32: + case MTIOCPOS32: + return mt_ioctl_trans(fd, cmd, arg); + /* Raw devices */ + case RAW_SETBIND: + case RAW_GETBIND: + return raw_ioctl(fd, cmd, arg); +#endif +#define AUTOFS_IOC_SETTIMEOUT32 _IOWR(0x93,0x64,unsigned int) + case AUTOFS_IOC_SETTIMEOUT32: + return ioc_settimeout(fd, cmd, arg); + /* 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); + /* Serial */ + case TIOCGSERIAL: + case TIOCSSERIAL: + return serial_struct_ioctl(fd, cmd, arg); + /* Usbdevfs */ + case USBDEVFS_CONTROL32: + return do_usbdevfs_control(fd, cmd, arg); + case USBDEVFS_BULK32: + return do_usbdevfs_bulk(fd, cmd, arg); + case USBDEVFS_DISCSIGNAL32: + return do_usbdevfs_discsignal(fd, cmd, arg); + /* i2c */ + case I2C_FUNCS: + return w_long(fd, cmd, arg); + case I2C_RDWR: + return do_i2c_rdwr_ioctl(fd, cmd, arg); + case I2C_SMBUS: + return do_i2c_smbus_ioctl(fd, cmd, arg); + /* 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); + + /* dvb */ + case VIDEO_GET_EVENT: + return do_video_get_event(fd, cmd, arg); + case VIDEO_STILLPICTURE: + return do_video_stillpicture(fd, cmd, arg); + case VIDEO_SET_SPU_PALETTE: + return do_video_set_spu_palette(fd, cmd, arg); + + /* lp */ + case LPSETTIMEOUT: + return lp_timeout_trans(fd, cmd, arg); + } + return -ENOIOCTLCMD; +} + static void compat_ioctl_error(struct file *filp, unsigned int fd, unsigned int cmd, unsigned long arg) { @@ -1906,7 +1932,8 @@ asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, goto found_handler; } - { + error = do_ioctl_trans(fd, cmd, arg, filp); + if (error == -ENOIOCTLCMD) { static int count; if (++count <= 50) |