On 07/26/2007 01:25 AM, Andrew Morton wrote:
On Wed, 25 Jul 2007 14:07:56 -0700
"Masoud Sharbiani" <[email protected]> wrote:
This is rate limited; Do you need me to rewrite it with it being
disabled by default?
Yes please.
Look: if there's a way in which an unprivileged user can trigger a printk
we fix it, end of story. I don't know why this even slightly controversial.
rene@7ixe4:/tmp$ su -c "dmesg -c >/dev/null"
rene@7ixe4:/tmp$ cdparanoia -B
[ ... ]
rene@7ixe4:/tmp$ dmesg | wc -l
158
rene@7ixe4:/tmp$ dmesg | tail -20
sg_write: data in/out 30576/30576 bytes for SCSI command 0xbe--guessing data in;
program cdparanoia not setting count and/or reply_len properly
printk: 252 messages suppressed.
sg_write: data in/out 16464/16464 bytes for SCSI command 0xbe--guessing data in;
program cdparanoia not setting count and/or reply_len properly
printk: 245 messages suppressed.
sg_write: data in/out 30576/30576 bytes for SCSI command 0xbe--guessing data in;
program cdparanoia not setting count and/or reply_len properly
printk: 243 messages suppressed.
sg_write: data in/out 30576/30576 bytes for SCSI command 0xbe--guessing data in;
program cdparanoia not setting count and/or reply_len properly
printk: 242 messages suppressed.
sg_write: data in/out 30576/30576 bytes for SCSI command 0xbe--guessing data in;
program cdparanoia not setting count and/or reply_len properly
printk: 255 messages suppressed.
sg_write: data in/out 30576/30576 bytes for SCSI command 0xbe--guessing data in;
program cdparanoia not setting count and/or reply_len properly
printk: 242 messages suppressed.
sg_write: data in/out 30576/30576 bytes for SCSI command 0xbe--guessing data in;
program cdparanoia not setting count and/or reply_len properly
cdparanoia does require access to the /dev/sg? that corresponds to /dev/cdrom
but at least udev (here) makes that node be a (root,cdrom) b-rw-rw--- device
(and requiring root privileges to rip CDs would certainly not be nice).
Rene.
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