diff options
Diffstat (limited to 'drivers/scsi/scsi_ioctl.c')
| -rw-r--r-- | drivers/scsi/scsi_ioctl.c | 176 |
1 files changed, 1 insertions, 175 deletions
diff --git a/drivers/scsi/scsi_ioctl.c b/drivers/scsi/scsi_ioctl.c index 36e93006664..a89aff61d3d 100644 --- a/drivers/scsi/scsi_ioctl.c +++ b/drivers/scsi/scsi_ioctl.c @@ -158,180 +158,6 @@ int scsi_set_medium_removal(struct scsi_device *sdev, char state) EXPORT_SYMBOL(scsi_set_medium_removal); /* - * This interface is deprecated - users should use the scsi generic (sg) - * interface instead, as this is a more flexible approach to performing - * generic SCSI commands on a device. - * - * The structure that we are passed should look like: - * - * struct sdata { - * unsigned int inlen; [i] Length of data to be written to device - * unsigned int outlen; [i] Length of data to be read from device - * unsigned char cmd[x]; [i] SCSI command (6 <= x <= 12). - * [o] Data read from device starts here. - * [o] On error, sense buffer starts here. - * unsigned char wdata[y]; [i] Data written to device starts here. - * }; - * Notes: - * - The SCSI command length is determined by examining the 1st byte - * of the given command. There is no way to override this. - * - Data transfers are limited to PAGE_SIZE (4K on i386, 8K on alpha). - * - The length (x + y) must be at least OMAX_SB_LEN bytes long to - * accommodate the sense buffer when an error occurs. - * The sense buffer is truncated to OMAX_SB_LEN (16) bytes so that - * old code will not be surprised. - * - If a Unix error occurs (e.g. ENOMEM) then the user will receive - * a negative return and the Unix error code in 'errno'. - * If the SCSI command succeeds then 0 is returned. - * Positive numbers returned are the compacted SCSI error codes (4 - * bytes in one int) where the lowest byte is the SCSI status. - * See the drivers/scsi/scsi.h file for more information on this. - * - */ -#define OMAX_SB_LEN 16 /* Old sense buffer length */ - -int scsi_ioctl_send_command(struct scsi_device *sdev, - struct scsi_ioctl_command __user *sic) -{ - char *buf; - unsigned char cmd[MAX_COMMAND_SIZE]; - unsigned char sense[SCSI_SENSE_BUFFERSIZE]; - char __user *cmd_in; - unsigned char opcode; - unsigned int inlen, outlen, cmdlen; - unsigned int needed, buf_needed; - int timeout, retries, result; - int data_direction; - gfp_t gfp_mask = GFP_KERNEL; - - if (!sic) - return -EINVAL; - - if (sdev->host->unchecked_isa_dma) - gfp_mask |= GFP_DMA; - - /* - * Verify that we can read at least this much. - */ - if (!access_ok(VERIFY_READ, sic, sizeof(Scsi_Ioctl_Command))) - return -EFAULT; - - if(__get_user(inlen, &sic->inlen)) - return -EFAULT; - - if(__get_user(outlen, &sic->outlen)) - return -EFAULT; - - /* - * We do not transfer more than MAX_BUF with this interface. - * If the user needs to transfer more data than this, they - * should use scsi_generics (sg) instead. - */ - if (inlen > MAX_BUF) - return -EINVAL; - if (outlen > MAX_BUF) - return -EINVAL; - - cmd_in = sic->data; - if(get_user(opcode, cmd_in)) - return -EFAULT; - - needed = buf_needed = (inlen > outlen ? inlen : outlen); - if (buf_needed) { - buf_needed = (buf_needed + 511) & ~511; - if (buf_needed > MAX_BUF) - buf_needed = MAX_BUF; - buf = kzalloc(buf_needed, gfp_mask); - if (!buf) - return -ENOMEM; - if (inlen == 0) { - data_direction = DMA_FROM_DEVICE; - } else if (outlen == 0 ) { - data_direction = DMA_TO_DEVICE; - } else { - /* - * Can this ever happen? - */ - data_direction = DMA_BIDIRECTIONAL; - } - - } else { - buf = NULL; - data_direction = DMA_NONE; - } - - /* - * Obtain the command from the user's address space. - */ - cmdlen = COMMAND_SIZE(opcode); - - result = -EFAULT; - - if (!access_ok(VERIFY_READ, cmd_in, cmdlen + inlen)) - goto error; - - if(__copy_from_user(cmd, cmd_in, cmdlen)) - goto error; - - /* - * Obtain the data to be sent to the device (if any). - */ - - if(inlen && copy_from_user(buf, cmd_in + cmdlen, inlen)) - goto error; - - switch (opcode) { - case SEND_DIAGNOSTIC: - case FORMAT_UNIT: - timeout = FORMAT_UNIT_TIMEOUT; - retries = 1; - break; - case START_STOP: - timeout = START_STOP_TIMEOUT; - retries = NORMAL_RETRIES; - break; - case MOVE_MEDIUM: - timeout = MOVE_MEDIUM_TIMEOUT; - retries = NORMAL_RETRIES; - break; - case READ_ELEMENT_STATUS: - timeout = READ_ELEMENT_STATUS_TIMEOUT; - retries = NORMAL_RETRIES; - break; - case READ_DEFECT_DATA: - timeout = READ_DEFECT_DATA_TIMEOUT; - retries = 1; - break; - default: - timeout = IOCTL_NORMAL_TIMEOUT; - retries = NORMAL_RETRIES; - break; - } - - result = scsi_execute(sdev, cmd, data_direction, buf, needed, - sense, timeout, retries, 0); - - /* - * If there was an error condition, pass the info back to the user. - */ - if (result) { - int sb_len = sizeof(*sense); - - sb_len = (sb_len > OMAX_SB_LEN) ? OMAX_SB_LEN : sb_len; - if (copy_to_user(cmd_in, sense, sb_len)) - result = -EFAULT; - } else { - if (outlen && copy_to_user(cmd_in, buf, outlen)) - result = -EFAULT; - } - -error: - kfree(buf); - return result; -} -EXPORT_SYMBOL(scsi_ioctl_send_command); - -/* * The scsi_ioctl_get_pci() function places into arg the value * pci_dev::slot_name (8 characters) for the PCI device (if any). * Returns: 0 on success @@ -409,7 +235,7 @@ int scsi_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) case SCSI_IOCTL_SEND_COMMAND: if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) return -EACCES; - return scsi_ioctl_send_command(sdev, arg); + return sg_scsi_ioctl(NULL, sdev->request_queue, NULL, arg); case SCSI_IOCTL_DOORLOCK: return scsi_set_medium_removal(sdev, SCSI_REMOVAL_PREVENT); case SCSI_IOCTL_DOORUNLOCK: |