patch-2.1.75 linux/drivers/scsi/sd_ioctl.c

• Lines: 23
• Date: Sun Dec 21 17:04:49 1997
• Orig file: v2.1.74/linux/drivers/scsi/sd_ioctl.c
• Orig date: Fri Nov 29 01:20:08 1996

diff -u --recursive --new-file v2.1.74/linux/drivers/scsi/sd_ioctl.c linux/drivers/scsi/sd_ioctl.c
@@ -25,9 +25,22 @@
     kdev_t dev = inode->i_rdev;
     int error;
     struct Scsi_Host * host;
+    Scsi_Device * SDev;
     int diskinfo[4];
     struct hd_geometry *loc = (struct hd_geometry *) arg;
     
+    SDev = rscsi_disks[MINOR(dev) >> 4].device;
+    /*
+     * If we are in the middle of error recovery, don't let anyone
+     * else try and use this device.  Also, if error recovery fails, it
+     * may try and take the device offline, in which case all further
+     * access to the device is prohibited.
+     */
+    if( !scsi_block_when_processing_errors(SDev) )
+      {
+        return -ENODEV;
+      }
+
     switch (cmd) {
     case HDIO_GETGEO:   /* Return BIOS disk parameters */
 	if (!loc)  return -EINVAL;