mirror of
https://github.com/adulau/aha.git
synced 2024-12-27 19:26:25 +00:00
compat_ioctl: inline all conversion handlers
This makes all ioctl conversion handlers called from a single switch statement, leaving only COMPATIBLE_IOCTL and ULONG_IOCTL statements in the table. This is somewhat more space efficient and also lets us simplify the handling of the lookup table significantly. before: text data bss dec hex filename 7619 14024 2080 23723 5cab obj/fs/compat_ioctl.o after: 7567 13352 2080 22999 59d7 obj/fs/compat_ioctl.o Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann
parent
348c4b9078
commit
5a07ea0b97
1 changed files with 81 additions and 54 deletions
|
|
@ -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)
|
||||
|
|
|
|||
Loading…
Reference in a new issue