Commit graph

1474 commits

Author SHA1 Message Date
Frans Kaashoek cef1b57d4a Compile user binary to map text without W and data without X
Use the flags in elf header to set vm permissions
Modify pgbug() so that usertests text segment is without W
Add test to check app cannot write text segment
2022-08-15 19:02:19 -04:00
Frans Kaashoek 2175c6b0b6 Run tests in the order in which they appear in the file 2022-08-15 19:01:34 -04:00
Frans Kaashoek 899cc02660 Experiment with being more precise setting permissions for user pages.
Growing adds R|W pages (without X).  Exec() marks the stack only R|W.

Probably could setup permissions for text and data better if we call
ld with --no-omagic instead of -N.
2022-08-12 13:22:10 -04:00
Frans Kaashoek 8f58cc7df9 Cosmetic change (thanks Harry Porter) 2022-08-12 12:59:33 -04:00
Frans Kaashoek 62bc610424 cosmetic changes (thanks Harry Porter) 2022-08-12 11:47:39 -04:00
Frans Kaashoek dd5a720044 cosmetic changes (thanks Harry Porter) 2022-08-12 10:57:16 -04:00
Frans Kaashoek 8bd04852c9 Delete rtcdate, which is a left-over from an old lab (thanks Harry Porter) 2022-08-12 09:43:18 -04:00
Frans Kaashoek 48d1a7ffa5 Add USED to states (thanks Harry Porter) 2022-08-12 09:14:54 -04:00
Frans Kaashoek b1fd09335a Merge remote-tracking branch 'g/riscv' into riscv 2022-08-10 10:31:54 -04:00
Robert Morris e67cb408d4 x 2022-08-10 07:21:50 -04:00
Robert Morris 07cf0eb255 have sh print prompt with write, not printf, to make
system call lecture a little clearer.
2022-08-10 07:21:50 -04:00
Robert Morris c908d20132 put walk() in defs.h so it's clear students can call it 2022-08-10 07:21:50 -04:00
Frans Kaashoek 143cde639d Merge remote-tracking branch 'github/riscv' into riscv 2022-08-10 07:18:39 -04:00
Robert Morris e606f95459 x 2022-08-10 07:06:49 -04:00
Robert Morris c3a17f454a have sh print prompt with write, not printf, to make
system call lecture a little clearer.
2022-08-10 06:42:17 -04:00
Robert Morris 311479ceb7 put walk() in defs.h so it's clear students can call it 2022-08-10 06:41:00 -04:00
Robert Morris 76ad8e974f avoid user-level segfault if a process doesn't call exit() 2022-08-10 06:37:21 -04:00
Robert Morris 872fa88e8a tolerate running out of disk blocks 2022-08-10 06:13:52 -04:00
Robert Morris 7d573bae2a Merge branch 'riscv' of g.csail.mit.edu:xv6-dev into riscv 2022-08-10 06:00:57 -04:00
Robert Morris f4b3edf5ab comment nits 2022-08-10 06:00:40 -04:00
Robert Morris 535f1797f0 nothing much 2022-08-09 20:34:06 -04:00
John Jolly 2462656f21 [user/ls]: List specific device file
When using the ls userspace program to list a specific device file,
nothing would be displayed. This was because ls only tests for T_FILE
and T_DIR. T_DEVICE files would fall through the case block.

Adding T_DEVICE to the T_FILE case allows a device file to be listed.

    $ ls console
    console        3 19 0
2022-08-09 20:29:38 -04:00
WaheedHafez 9f3673c4da fix 'kfree' comment in kalloc.c
'kfree' has a parameter named 'pa' but referenced in the comment as 'v'.
2022-08-09 20:29:38 -04:00
mrm c1c16269b1 fix comment in mkfs.c 2022-08-09 20:29:38 -04:00
John Jolly 62d8da06cd [user/ls]: List specific device file
When using the ls userspace program to list a specific device file,
nothing would be displayed. This was because ls only tests for T_FILE
and T_DIR. T_DEVICE files would fall through the case block.

Adding T_DEVICE to the T_FILE case allows a device file to be listed.

    $ ls console
    console        3 19 0
2022-08-09 20:27:46 -04:00
WaheedHafez 96da76a728 fix 'kfree' comment in kalloc.c
'kfree' has a parameter named 'pa' but referenced in the comment as 'v'.
2022-08-09 20:27:04 -04:00
mrm f33f0d8622 fix comment in mkfs.c 2022-08-09 20:24:04 -04:00
Ravjot Singh Samra a2e4051b99 Added missing va_end(). 2022-08-09 20:20:32 -04:00
Ravjot Singh Samra 431e21f7d4 Added missing va_end(). 2022-08-09 20:20:01 -04:00
Robert Morris 7d8bfdcbe3 nothing much 2022-08-09 15:11:25 -04:00
olf dd431c400a README: Fix formatting in acknowledgements 2022-08-09 14:29:48 -04:00
Rahul Thomas 7c958af782 enable reading memory using gdb 2022-08-09 14:21:16 -04:00
Robert Morris 27a669ef25 comment nits 2022-08-09 14:17:46 -04:00
Robert Morris af9abaca05 Merge branch 'riscv' of g.csail.mit.edu:xv6-dev into riscv 2022-08-09 13:41:51 -04:00
Robert Morris 3abd7a16dd comment 2022-08-09 13:41:45 -04:00
Robert Morris cf0c095721 sscratch cleanup 2022-08-09 12:14:29 -04:00
Robert Morris 9fc9f755e1 adopt github PR98 (No need to store TRAPFRAME in sscratch register) 2022-08-09 11:44:02 -04:00
Robert Morris ca6fc54934 tweak virtio comments 2022-08-08 11:10:54 -04:00
Frans Kaashoek 84fb6f3dc2 Merge branch 'virtio' into riscv 2022-08-02 11:44:40 -04:00
Frans Kaashoek 1b02b08db1 Mark runcmd with attribute noreturn, since it doesn't return
When compiling with gcc version 12, this change also avoids the
compiler warning "infinite recursion detected" for runcmd()
2022-08-02 09:38:22 -04:00
Frans Kaashoek 84a1bdb5aa Revert "Not treat infinite-recursion as error"
This reverts commit 759bb34113.
2022-08-02 09:37:30 -04:00
Dezhi Wu 759bb34113 Not treat infinite-recursion as error 2022-07-21 19:01:23 -04:00
Xi Wang cd00a8233a port virtio_disk to virtio spec 1.0+
The legacy interface is confusing. It's better to make virtio_disk
conform to the virtio spec. This is supported in QEMU since 4.2 by
disabling force-legacy for virtio-mmio.
2021-10-17 23:05:09 -07:00
Frans Kaashoek a1da53a5a1 update 2021-09-01 07:31:22 -04:00
Frans Kaashoek 8ca56e9e0b memmove(dst, src, 0) leads to overflow in while(n-- > 0) as n is uint64 (thanks
Matúš Jókay <matus.jokay@stuba.sk>)
2021-09-01 07:29:12 -04:00
Frans Kaashoek bf4816c9c6 Delete unused code (Jude Rich <juder11@gmail.com>) 2021-09-01 07:24:07 -04:00
Frans Kaashoek 02424b1f84 update 2021-08-31 21:06:53 -04:00
yzhu a103113db0 fix ld warning: undefined symbol _entry 2021-08-31 20:58:58 -04:00
Pavan Maddamsetti 840aae871f die 2021-08-31 20:57:03 -04:00
Pavan Maddamsetti e07ca66145 comment 2021-08-31 14:27:33 -04:00