>> Because programs running as root assume
>> open("blah", O_RDWR)
>> write(blah)
>> will work. They do NOT expect to have to
>> open("blah", O_RDWR)
>> if (-EPERM)
>> chflags("blah", immutable off)
>> open("blah", O_RDWR)
> assumptions are generally bad.
Failure to check for errors is often BAD.
> two situations immediately come to mind.
> - extended attribute; immutable
> - extended attribute; append only
> - filesystem mounted RO
> - 100% filesystem usage, 0% free
--- that's four;
Let's also add
- System is BSD 4.4 and user immutable or user append-only
UFS flag is set.
> therefore the first example is very very bad.
> always check your return values, expect the unexpected and survive. =)
> -d
-- Jim Dennis jdennis@linuxcare.com Linuxcare: Linux Corporate Support Team: http://www.linuxcare.com- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/