doing the MNT_RELOAD, pass in "ro" and "update"
string mount options to nmount() instead of MNT_RDONLY and MNT_UPDATE flags.
Due to the complexity of the mount parsing code especially
with respect to the root file system, passing in MNT_RDONLY and MNT_UPDATE
flags would do weird things and would cause fsck to convert the root
file system from a read-only mount to read-write.
To test:
- boot into single user mode
- show mounted file systems with: mount
- root file system should be mounted read-only
- fsck /
- show mounted file systems with: mount
- root file system should still be mounted read-only
PR: 120319
MFC after: 1 month
Reported by: yar
the limit in bytes) hard coded into both the kernel and userland.
Make both these limits a sysctl, so it is easy to change the limit.
If the userland part of ipfw finds that the sysctls don't exist,
it will just fall back to the traditional limits.
(100 packets is quite a small limit these days. If you want to test
TCP at 100Mbps, 100 packets can only accommodate a DBP of 12ms.)
Note these sysctls in the man page and warn against increasing them
without thinking first.
MFC after: 3 weeks
number read from cylinder group. Chances that we read a smarshed
cylinder group, and we can not 100% trust information it has
supplied. fsck_ffs(8) will crash otherwise for some cases.
processing the information. chk1 is more prone to crash when insane
information is provided by the on-disk inode, and does not even work
if the inode is being smarshed badly.
whether fs_bsize is larger than MINBSIZE, which is larger than the
value that is used to compared with fs_bsize, the sizeof fs, so the
check followed, will be always true.
By inspecting the code and some old commit log, I believe that the
check must be that *fs_sbsize* is larger than sizeof fs. We round
up the size to nearest dev_bsize, as the smallest accepted fs_sbsize,
personally, I think this can be even changed to equal, because this
number is mostly an invariant in file systems.
With this check, fsck_ffs(8) will be more picky and has better
chance rejecting bad first superblock rather than referring to bad
value it supplied, thus gives better chance for it to check the
filesystem carefully.
table 'values' as IP addresses, use an explicit argument (-i).
This is a 'POLA' issue. This is a low risk change and should be MFC'd
to RELENG_6 and RELENG 7. it might be put as an errata item for 6.3.
(not sure about 6.2).
Fix suggested by: Eugene Grosbein
PR: 120720
MFC After: 3 days
NFS root r/w.
The real solution would be to bring the whole nmount(2)
framework, including FS drivers and userland tools, into
a consistent state at last; but things should work in the
meantime, too.
Reported by: kris
historical relic, and are no longer appropriate for either LAN or WAN
mounting. At modern (gigabit and 10 gigabit) LAN speeds packet loss
from socket buffer fill events is common, and sequence numbers wrap
quickly enough that data corruption is possible. TCP solves both of
these problems without imposing significant overhead.
MFC after: 1 month
Add a MULTIPLE INSTANCES section which provides an example of
setting up natd in multi-instance mode (based on the notes.natd
file from phk@).
Submitted by: "Andrey V. Elsukov" <bu7cher@yandex.ru>
Reviewed by: ru
process parallel checks in the same way as fsck, since fsck supports
pass numbers other than 0, 1 or 2. Without this, quotacheck would
ignore file systems with pass numbers > 2.
The -l (maxrun) option is now deprecated and can be tuned with pass
numbers in /etc/fstab if needed.
exposing them to all consumers of ip_fw.h. These structures are
used in both ipfw(8) and ipfw(4), but not part of the user<->kernel
interface for other applications to use, rather, shared
implementation.
MFC after: 3 days
Reported by: Paul Vixie <paul at vix dot com>
on a filesystem if the quota data files reside on a different
filesystem (e.g. the userquota=/somepath,groupquota=/somepath2
options are specified in /etc/fstab to place the quota files
somewhere other than the default location).
Fix quotacheck to only skip accounting if the quota data file
actually resides on the filesystem being checked.
rather than the memcmp() which is used for regular dumps: the
textdump string is one character shorter, so we need to stop
comparing at the end of the string.
Use independent version checking logic for architecture-specific
version number vs. textdump version number, as the version sequences
may (someday) differ.
Run into by: rrs
managed from userspace. It is largely a wrapper for sysctl()
calls, but because the sysctls for adding and removing scripts
are awkward to use directly, this provides an easier-to-use
interface.
MFC after: 3 months
Implement -E option which will erase the filesystem sectors before
making the new filesystem. Reserved space in front of the superblock
(bootcode) is not erased.
NB: Erasing can take as long time as writing every sector sequentially.
This is relevant for all flash based disks which use wearlevelling.
section (if nothing had been specified, or if the auto type had
been specified, a default layout is used).
PR: docs/116047
Submitted by: Ian Smith <smithi at nimnet dot asn dot au>
Minor modifications by me.
return -1 on error while any other return value from it can
indicate success. (See RETURN VALUE in our ioctl(2) manpage
and the POSIX spec.)
- Avoid assumptions about the state of the data buffer after
ioctl(2) failure.
Add a new option to newfs(8), -r, to specify reserved space at the
end of the device. It can be useful, e.g., when the device is to
become a member of a gmirror array later w/o losing the file system
on it.
Document the new option in the manpage.
While I'm here, improve error handling for -s option, which is
syntactically similar to -r; and document the fact that -s0 selects
the default fs size explicitly, which can be useful, e.g., in a
menu-based wrapper around newfs(8) requiring some value be entered
for the fs size.
Also fix a small typo in the help line for -s (missing space).
Idea and initial implementation by: marck
Discussed on: -fs
Critical review by: bde
Tested with: cmp(1)
- refer to the dummynet(4) man page only once, later use rather
the .Nm macro.
- use .Va macro when refering to the sysctl variables
- grammar and markup fixes
Reviewed by: keramida, trhodes, ru (roughly)
MFC-after: 1 week
If it is set to zero value (default) dummynet module will try to emulate
real link as close as possible (bandwidth & latency): packet will not leave
pipe faster than it should be on real link with given bandwidth.
(This is original behaviour of dummynet which was altered in previous commit)
If it is set to non-zero value only bandwidth is enforced: packet's latency
can be lower comparing to real link with given bandwidth.
- Document recently introduced dummynet(4) sysctl variables.
Requested by: luigi, julian
MFC after: 3 month
with ACCESSPERMS. Document in mount_ntfs(8) only the nine
low-order bits of mask are used (taken from mount_msdosfs(8)).
PR: kern/114856
Submitted by: Ighighi
MFC after: 1 month
