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authorKai Makisara <Kai.Makisara@kolumbus.fi>2005-05-01 18:11:55 +0300
committerJames Bottomley <jejb@mulgrave.(none)>2005-05-20 12:53:46 -0500
commit16c4b3e2071ad73e5cd2aa82961eed0414df6a7d (patch)
tree4083223806465884f775c6df142b8772e51073f7 /drivers/scsi/st.c
parentf80ed139343c37c897ae89c70f7736a6937172f5 (diff)
downloadlinux-16c4b3e2071ad73e5cd2aa82961eed0414df6a7d.tar.bz2
[SCSI] SCSI tape: fix permissions for SG_IO, etc.
This patch is against 2.6.12-rc3 + linus-patch from April 30. The patch contains the following fixes: - CAP_SYS_RAWIO is used instead of CAP_SYS_ADMIN; fix from Alan Cox - only direct sending of SCSI commands requires this permission - the st status is modified is successful unload is performed using SCSI_IOCTL_STOP_UNIT Signed-off-by: Kai Makisara <kai.makisara@kolumbus.fi> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/st.c')
-rw-r--r--drivers/scsi/st.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 265d1eed64fa..03b902c20e09 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -17,7 +17,7 @@
Last modified: 18-JAN-1998 Richard Gooch <rgooch@atnf.csiro.au> Devfs support
*/
-static char *verstr = "20050312";
+static char *verstr = "20050501";
#include <linux/module.h>
@@ -29,6 +29,7 @@ static char *verstr = "20050312";
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/mtio.h>
+#include <linux/cdrom.h>
#include <linux/ioctl.h>
#include <linux/fcntl.h>
#include <linux/spinlock.h>
@@ -50,6 +51,7 @@ static char *verstr = "20050312";
#include <scsi/scsi_host.h>
#include <scsi/scsi_ioctl.h>
#include <scsi/scsi_request.h>
+#include <scsi/sg.h>
/* The driver prints some debugging information on the console if DEBUG
@@ -3463,7 +3465,10 @@ static int st_ioctl(struct inode *inode, struct file *file,
case SCSI_IOCTL_GET_BUS_NUMBER:
break;
default:
- if (!capable(CAP_SYS_ADMIN))
+ if ((cmd_in == SG_IO ||
+ cmd_in == SCSI_IOCTL_SEND_COMMAND ||
+ cmd_in == CDROM_SEND_PACKET) &&
+ !capable(CAP_SYS_RAWIO))
i = -EPERM;
else
i = scsi_cmd_ioctl(file, STp->disk, cmd_in, p);
@@ -3471,10 +3476,12 @@ static int st_ioctl(struct inode *inode, struct file *file,
return i;
break;
}
- if (!capable(CAP_SYS_ADMIN) &&
- (cmd_in == SCSI_IOCTL_START_UNIT || cmd_in == SCSI_IOCTL_STOP_UNIT))
- return -EPERM;
- return scsi_ioctl(STp->device, cmd_in, p);
+ retval = scsi_ioctl(STp->device, cmd_in, p);
+ if (!retval && cmd_in == SCSI_IOCTL_STOP_UNIT) { /* unload */
+ STp->rew_at_close = 0;
+ STp->ready = ST_NO_TAPE;
+ }
+ return retval;
out:
up(&STp->lock);