forked from luck/tmp_suning_uos_patched
compat_ioctl: move cdrom handlers to block/compat_ioctl.c
These are shared by all cd-rom drivers and should have common handlers. Do slight cosmetic cleanups in the process. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Arnd Bergmann
Jens Axboe
parent
18cf7f8723
commit
b3087cc4f3
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@ -92,6 +92,84 @@ static int compat_hdio_ioctl(struct inode *inode, struct file *file,
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return error;
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}
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struct compat_cdrom_read_audio {
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union cdrom_addr addr;
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u8 addr_format;
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compat_int_t nframes;
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compat_caddr_t buf;
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};
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struct compat_cdrom_generic_command {
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unsigned char cmd[CDROM_PACKET_SIZE];
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compat_caddr_t buffer;
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compat_uint_t buflen;
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compat_int_t stat;
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compat_caddr_t sense;
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unsigned char data_direction;
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compat_int_t quiet;
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compat_int_t timeout;
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compat_caddr_t reserved[1];
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};
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static int compat_cdrom_read_audio(struct inode *inode, struct file *file,
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struct gendisk *disk, unsigned int cmd, unsigned long arg)
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{
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struct cdrom_read_audio __user *cdread_audio;
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struct compat_cdrom_read_audio __user *cdread_audio32;
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__u32 data;
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void __user *datap;
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cdread_audio = compat_alloc_user_space(sizeof(*cdread_audio));
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cdread_audio32 = compat_ptr(arg);
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if (copy_in_user(&cdread_audio->addr,
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&cdread_audio32->addr,
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(sizeof(*cdread_audio32) -
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sizeof(compat_caddr_t))))
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return -EFAULT;
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if (get_user(data, &cdread_audio32->buf))
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return -EFAULT;
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datap = compat_ptr(data);
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if (put_user(datap, &cdread_audio->buf))
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return -EFAULT;
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return blkdev_driver_ioctl(inode, file, disk, cmd,
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(unsigned long)cdread_audio);
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}
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static int compat_cdrom_generic_command(struct inode *inode, struct file *file,
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struct gendisk *disk, unsigned int cmd, unsigned long arg)
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{
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struct cdrom_generic_command __user *cgc;
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struct compat_cdrom_generic_command __user *cgc32;
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u32 data;
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unsigned char dir;
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int itmp;
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cgc = compat_alloc_user_space(sizeof(*cgc));
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cgc32 = compat_ptr(arg);
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if (copy_in_user(&cgc->cmd, &cgc32->cmd, sizeof(cgc->cmd)) ||
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get_user(data, &cgc32->buffer) ||
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put_user(compat_ptr(data), &cgc->buffer) ||
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copy_in_user(&cgc->buflen, &cgc32->buflen,
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(sizeof(unsigned int) + sizeof(int))) ||
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get_user(data, &cgc32->sense) ||
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put_user(compat_ptr(data), &cgc->sense) ||
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get_user(dir, &cgc32->data_direction) ||
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put_user(dir, &cgc->data_direction) ||
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get_user(itmp, &cgc32->quiet) ||
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put_user(itmp, &cgc->quiet) ||
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get_user(itmp, &cgc32->timeout) ||
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put_user(itmp, &cgc->timeout) ||
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get_user(data, &cgc32->reserved[0]) ||
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put_user(compat_ptr(data), &cgc->reserved[0]))
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return -EFAULT;
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return blkdev_driver_ioctl(inode, file, disk, cmd, (unsigned long)cgc);
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}
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struct compat_blkpg_ioctl_arg {
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compat_int_t op;
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compat_int_t flags;
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@ -190,6 +268,11 @@ static int compat_blkdev_driver_ioctl(struct inode *inode, struct file *file,
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case HDIO_GET_ADDRESS:
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case HDIO_GET_BUSSTATE:
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return compat_hdio_ioctl(inode, file, disk, cmd, arg);
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case CDROMREADAUDIO:
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return compat_cdrom_read_audio(inode, file, disk, cmd, arg);
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case CDROM_SEND_PACKET:
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return compat_cdrom_generic_command(inode, file, disk, cmd, arg);
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/*
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* No handler required for the ones below, we just need to
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* convert arg to a 64 bit pointer.
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@ -37,7 +37,6 @@
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#include <linux/if_ppp.h>
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#include <linux/if_pppox.h>
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#include <linux/mtio.h>
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#include <linux/cdrom.h>
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#include <linux/auto_fs.h>
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#include <linux/auto_fs4.h>
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#include <linux/tty.h>
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@ -1039,108 +1038,6 @@ static int mt_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg)
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return err ? -EFAULT: 0;
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}
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struct cdrom_read_audio32 {
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union cdrom_addr addr;
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u8 addr_format;
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compat_int_t nframes;
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compat_caddr_t buf;
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};
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struct cdrom_generic_command32 {
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unsigned char cmd[CDROM_PACKET_SIZE];
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compat_caddr_t buffer;
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compat_uint_t buflen;
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compat_int_t stat;
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compat_caddr_t sense;
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unsigned char data_direction;
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compat_int_t quiet;
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compat_int_t timeout;
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compat_caddr_t reserved[1];
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};
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static int cdrom_do_read_audio(unsigned int fd, unsigned int cmd, unsigned long arg)
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{
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struct cdrom_read_audio __user *cdread_audio;
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struct cdrom_read_audio32 __user *cdread_audio32;
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__u32 data;
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void __user *datap;
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cdread_audio = compat_alloc_user_space(sizeof(*cdread_audio));
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cdread_audio32 = compat_ptr(arg);
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if (copy_in_user(&cdread_audio->addr,
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&cdread_audio32->addr,
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(sizeof(*cdread_audio32) -
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sizeof(compat_caddr_t))))
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return -EFAULT;
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if (get_user(data, &cdread_audio32->buf))
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return -EFAULT;
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datap = compat_ptr(data);
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if (put_user(datap, &cdread_audio->buf))
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return -EFAULT;
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return sys_ioctl(fd, cmd, (unsigned long) cdread_audio);
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}
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static int cdrom_do_generic_command(unsigned int fd, unsigned int cmd, unsigned long arg)
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{
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struct cdrom_generic_command __user *cgc;
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struct cdrom_generic_command32 __user *cgc32;
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u32 data;
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unsigned char dir;
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int itmp;
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cgc = compat_alloc_user_space(sizeof(*cgc));
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cgc32 = compat_ptr(arg);
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if (copy_in_user(&cgc->cmd, &cgc32->cmd, sizeof(cgc->cmd)) ||
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get_user(data, &cgc32->buffer) ||
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put_user(compat_ptr(data), &cgc->buffer) ||
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copy_in_user(&cgc->buflen, &cgc32->buflen,
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(sizeof(unsigned int) + sizeof(int))) ||
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get_user(data, &cgc32->sense) ||
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put_user(compat_ptr(data), &cgc->sense) ||
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get_user(dir, &cgc32->data_direction) ||
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put_user(dir, &cgc->data_direction) ||
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get_user(itmp, &cgc32->quiet) ||
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put_user(itmp, &cgc->quiet) ||
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get_user(itmp, &cgc32->timeout) ||
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put_user(itmp, &cgc->timeout) ||
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get_user(data, &cgc32->reserved[0]) ||
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put_user(compat_ptr(data), &cgc->reserved[0]))
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return -EFAULT;
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return sys_ioctl(fd, cmd, (unsigned long) cgc);
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}
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static int cdrom_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg)
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{
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int err;
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switch(cmd) {
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case CDROMREADAUDIO:
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err = cdrom_do_read_audio(fd, cmd, arg);
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break;
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case CDROM_SEND_PACKET:
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err = cdrom_do_generic_command(fd, cmd, arg);
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break;
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default:
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do {
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static int count;
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if (++count <= 20)
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printk("cdrom_ioctl: Unknown cmd fd(%d) "
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"cmd(%08x) arg(%08x)\n",
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(int)fd, (unsigned int)cmd, (unsigned int)arg);
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} while(0);
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err = -EINVAL;
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break;
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};
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return err;
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}
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#endif /* CONFIG_BLOCK */
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#ifdef CONFIG_VT
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@ -3147,8 +3044,6 @@ HANDLE_IOCTL(PPPIOCSACTIVE32, ppp_sock_fprog_ioctl_trans)
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#ifdef CONFIG_BLOCK
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HANDLE_IOCTL(MTIOCGET32, mt_ioctl_trans)
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HANDLE_IOCTL(MTIOCPOS32, mt_ioctl_trans)
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HANDLE_IOCTL(CDROMREADAUDIO, cdrom_ioctl_trans)
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HANDLE_IOCTL(CDROM_SEND_PACKET, cdrom_ioctl_trans)
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#endif
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#define AUTOFS_IOC_SETTIMEOUT32 _IOWR(0x93,0x64,unsigned int)
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HANDLE_IOCTL(AUTOFS_IOC_SETTIMEOUT32, ioc_settimeout)
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