Hi everybody,
I am experimenting with the root file system, and I want to assign it to a
JFFS2 partition.
The 'Compiled-in Kernel Boot Parameter' in the config is set to
'root=/dev/mtdblock1 ro rootfstype=jffs2'. Linux finds the partition and
everything seems to work perfectly.
Except for a minor thing; despite the 'ro' flag in the parameter list, linux
mounts the file system as 'rw'.
/> mount
/dev/rom1 on / type jffs2 (rw)
....
/>
I would like to have the root partition as read-only.
One thing I tried was to in the mtd map set the 'mask_flags' member
struct mtd_partition .... {
...
{
.name =
.offset =
.size =
.mask_flags = MTD_WRITEABLE
}
...
};
This kind of works, but the file system mount is still 'rw'. If trying to
write to the partition, you'd get a flood of error messages from the flash
driver.
How can I make the root file system read-only? So the write attempts are
caught before communicating with the driver.
I'd like to see the mount being reported as 'ro', like this
# mount
/dev/rom1 on / type jffs2 (ro)
BTW, I am using 2.6.22 kernel on top of the 20070130 distro on a M5272.
Thanks in advance,
Harry
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