We need to parse the arguments first, then open the device (if
specified) and then apply the changes. This change will disallow the
(undocumented) use of multiple instances of the same argument on the
same command line for the sack of a better error message.
Other changes are:
1) the softupdates (-n) now issue a warning about remaining unchanged
2) the usage and man page is changed to specify "space | time" instead of
"optimization preference".
PR: bin/23335
Submitted by:Mark Peek <mark@whistle.com>
later. This allows tunefs -p on mounted filesystems.
Side-effects:
Use K&R prototypes.
Use definitions from fcntl.h for the flags argument to open(2).
There are cosmetic differences between this and the submitted patch.
PR: 17143
Reported by: Peter Edwards <peter.edwards@ireland.com>
Submitted by: luoqi
parameters are. You can use dumpfs, but that's not obvious which settings
are tuneable, and is far from clear to the non-guru (it's like using a
hexdump of a tar archive to get a table-of-contents).
There is also an undocumented option in the man page that can be dangerous.
Suppose your disk driver decides to scramble all writes while you tell
tunefs to update all backup superblocks.
This suggested change adds a '-p' (print) switch to bring it in
line with some SVR4 systems.
(Slightly changed by me, mostly for optics. - joerg)
Submitted by: peter@haywire.dialix.com
