diff options
| author | Kai Makisara <Kai.Makisara@kolumbus.fi> | 2005-05-01 19:11:55 +0400 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.(none)> | 2005-05-20 21:53:46 +0400 |
| commit | 16c4b3e2071ad73e5cd2aa82961eed0414df6a7d (patch) | |
| tree | 4083223806465884f775c6df142b8772e51073f7 /drivers/scsi | |
| parent | f80ed139343c37c897ae89c70f7736a6937172f5 (diff) | |
| download | linux-16c4b3e2071ad73e5cd2aa82961eed0414df6a7d.tar.xz | |
[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')
| -rw-r--r-- | drivers/scsi/st.c | 19 |
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); |