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take compat TIOC[SG]SERIAL treatment into tty_compat_ioctl()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2018-09-12 11:28:34 -04:00
parent f82fc0fedf
commit 7765435030
2 ha cambiato i file con 81 aggiunte e 67 eliminazioni
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67
fs/compat_ioctl.c
Vedi File

@@ -560,69 +560,6 @@ static int mt_ioctl_trans(struct file *file,
#define HIDPGETCONNLIST _IOR('H', 210, int)
#define HIDPGETCONNINFO _IOR('H', 211, int)
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(struct file *file,
unsigned cmd, struct serial_struct32 __user *ss32)
{
typedef struct serial_struct32 SS32;
int err;
struct serial_struct __user *ss = compat_alloc_user_space(sizeof(*ss));
__u32 udata;
unsigned int base;
unsigned char *iomem_base;
if (ss == NULL)
return -EFAULT;
if (cmd == TIOCSSERIAL) {
if (copy_in_user(ss, ss32, offsetof(SS32, iomem_base)) ||
get_user(udata, &ss32->iomem_base))
return -EFAULT;
iomem_base = compat_ptr(udata);
if (put_user(iomem_base, &ss->iomem_base) ||
convert_in_user(&ss32->iomem_reg_shift,
&ss->iomem_reg_shift) ||
convert_in_user(&ss32->port_high, &ss->port_high) ||
put_user(0UL, &ss->iomap_base))
return -EFAULT;
}
err = do_ioctl(file, cmd, (unsigned long)ss);
if (cmd == TIOCGSERIAL && err >= 0) {
if (copy_in_user(ss32, ss, offsetof(SS32, iomem_base)) ||
get_user(iomem_base, &ss->iomem_base))
return -EFAULT;
base = (unsigned long)iomem_base >> 32 ?
0xffffffff : (unsigned)(unsigned long)iomem_base;
if (put_user(base, &ss32->iomem_base) ||
convert_in_user(&ss->iomem_reg_shift,
&ss32->iomem_reg_shift) ||
convert_in_user(&ss->port_high, &ss32->port_high))
return -EFAULT;
}
return err;
}
#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)
@@ -1242,10 +1179,6 @@ static long do_ioctl_trans(unsigned int cmd,
case MTIOCPOS32:
return mt_ioctl_trans(file, cmd, argp);
#endif
/* Serial */
case TIOCGSERIAL:
case TIOCSSERIAL:
return serial_struct_ioctl(file, cmd, argp);
/* Not implemented in the native kernel */
case RTC_IRQP_READ32:
case RTC_IRQP_SET32: