yar 2008-02-14 17:04:31 UTC
FreeBSD src repository
Modified files:
sys/kern vfs_mount.c
Log:
In the new order of things dictated by nmount(2), a read-only mount
is to be requested via a "ro" option. At the same time, MNT_RDONLY
is gradually becoming an indicator of the current state of the FS
instead of a command flag. Today passing MNT_RDONLY alone to the
kernel's mount machinery will lead to various glitches. (See the
PRs for examples.)
Therefore mount the root FS with a "ro" option instead of the
MNT_RDONLY flag. (Note that MNT_RDONLY still is added to the mount
flags internally, by vfs_donmount(), if "ro" was specified.)
To be able to pass "ro" cleanly to kernel_vmount(), teach the latter
function to accept options with NULL values.
Also correct the comment explaining how mount_arg() handles length
of -1.
PR: bin/106636 kern/120319
Submitted by: Jaakko Heinonen <see PR kern/120319 for email> (originally)
Revision Changes Path
1.274 +4 -3 src/sys/kern/vfs_mount.c
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