13 commits

Author	SHA1	Message	Date
Robert Morris	d7c0a1b7a7	hopefully make writei more correct	2020-10-23 10:18:30 -04:00
Frans Kaashoek	05074badc4	When either_copyin/out fails, return an error from write/read ... Add a test to check that read/write return an error	2020-09-24 13:18:54 -04:00
Robert Morris	354adfdafc	streamline copyin/copyout code in usertests ... fix bugs in read/write return values when there's an error	2020-08-07 15:06:43 -04:00
Robert Morris	f3979b7212	make "echo hello > x" truncate file x.	2020-07-16 11:38:08 -04:00
Robert Morris	7c7ed20822	don't leak a file system block if the buf argument to write is invalid ... and a usertest	2019-09-20 13:09:26 -04:00
Frans Kaashoek	d98ddadd79	Also release buffer on failed copyout	2019-08-20 12:46:56 -04:00
Frans Kaashoek	6005ef5a1c	Release buffer also when copyin fails	2019-08-20 11:57:24 -04:00
Frans Kaashoek	a825f22cf8	Merge remote-tracking branch 'origin/master' into riscv	2019-08-19 19:27:29 -04:00
Frans Kaashoek	2501560cd6	Cosmetic cleanup: fsinit reads sb and calls loginit. initialize icache ... in main.c and don't make it disk specific; the icache is shared. This doesn't matter since we have only one disk, but conceptually cleaner and maybe helpful to students for mount lab.	2019-08-18 14:35:11 -04:00
Robert Morris	a77287e924	no more PAGEBREAK	2019-07-24 13:33:43 -04:00
Frans Kaashoek	67702cf706	Checkpoint switching to per-process locks, in attempt clarify xv6's ... locking plan, which is a difficult to understand because ptable lock protects many invariants. This implementation has a bug: once in a while xv6 unlocks a proc lock that is locked by another core.	2019-07-02 09:14:47 -04:00
Robert Morris	a8305b7318	FD_DEVICE	2019-06-13 10:29:27 -04:00
Robert Morris	5753553213	separate source into kernel/ user/ mkfs/	2019-06-11 09:57:14 -04:00

Renamed from fs.c (Browse further)