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317 Commits

Author SHA1 Message Date
Christian Poveda
2151e958ce
minor fixes and updated docs 2019-12-26 12:12:27 -05:00
Christian Poveda
bbbb50a09a
set mask for statx correctly 2019-12-25 22:24:18 -05:00
Christian Poveda
1bc3629084
do padding correctly 2019-12-25 18:22:33 -05:00
Christian Poveda
d176259002
deduplicate shared code between stat and statx 2019-12-25 18:17:20 -05:00
Christian Poveda
515c119359
Add padding on 64-bits only 2019-12-25 13:10:50 -05:00
Christian Poveda
6d88a4704a
restrict stat shim to macos only 2019-12-25 12:38:35 -05:00
Christian Poveda
75f7a118e6
remove restrictions due to stat unavailability 2019-12-25 12:38:34 -05:00
Christian Poveda
dbc118919a
add padding to immediates 2019-12-25 11:08:27 -05:00
Christian Poveda
0184e10f2f
fix size for file mode 2019-12-25 08:27:50 -05:00
Christian Poveda
b2c4ff2aee
add remanining fields to stat stuct 2019-12-25 08:27:50 -05:00
Christian Poveda
6177e6df7e
provide correct name for shim 2019-12-25 08:27:50 -05:00
Christian Poveda
d9ecd77ada
add dummy stat shim 2019-12-25 08:27:49 -05:00
Oliver Scherer
7ead530841 Rustfmt all the things 2019-12-23 12:56:23 +01:00
bors
a3ea1cb458 Auto merge of #1101 - christianpoveda:stat-shim, r=RalfJung 
Add statx shim for linux target

This is an attempt to fix: https://github.com/rust-lang/miri/issues/999 (for linux only)

Currently there is one problem that I haven't been able to solve. `std::fs::metadata` fails because the creation time is not available even though it is provided in the shim code.

In order to inform the caller that the field was provided, the `stx_flag` field must have the bits of `STATX_BTIME` set (which they are). The creation time is in the `stx_btime` field of the `statx` struct (see [1]). The relevant code in `libstd` is here (probably?): https://github.com/rust-lang/rust/blob/master/src/libstd/sys/unix/fs.rs#L322

Another important point is that we are just providing the fields that are available in "all" platforms (this is, without using any platform specific traits or so). This can be improved later.

References:
[1] Man page: http://man7.org/linux/man-pages/man2/statx.2.html
[2] libc `statx` struct: https://docs.rs/libc/0.2.63/libc/struct.statx.html

Edit: The problem is that my filesystem is not providing it and I thought all filesystems could provide it. I changed the code so it only provides those dates if they are available. now we are ready to go.

r? @RalfJung @oli-obk
 2019-12-22 17:01:53 +00:00
Christian Poveda
b0c7625dd1
add statx shim for linux 2019-12-22 11:46:02 -05:00
Ralf Jung
67151a712d rustup 2019-12-08 10:32:50 +01:00
Ralf Jung
edac086f1c rustup for find_fn rename 2019-12-04 23:31:39 +01:00
Ralf Jung
94732aaf7b rename helper methods a bit 2019-12-04 10:43:36 +01:00
Ralf Jung
ab000997db use throw_machine_stop macro 2019-12-03 23:31:44 +01:00
Aaron Hill
a418fe9826
Rustup for BodyCache changes 2019-12-02 20:21:03 -05:00
Ralf Jung
d43e394c46 fix init_allocation_extra 2019-12-02 16:04:31 +01:00
Ralf Jung
b2cddd27bd better span for functions whose frame we push 'manually' 2019-12-02 16:04:31 +01:00
Ralf Jung
b91383b068 implement proper panicking for other MIR assertions 
Requires generalizing the call_function helper to arbitrary Immediate arguments
 2019-12-02 16:04:31 +01:00
Ralf Jung
8a36d12d36 implement proper panicking for failed index check 2019-12-02 16:04:31 +01:00
Ralf Jung
dcdd68b936 also indicate abort via new MachineStop variant 2019-12-02 09:13:58 +01:00
Ralf Jung
f3c00a447c use new MachineStop error variant 2019-12-02 09:05:35 +01:00
Ralf Jung
4a4886c0f0 avoid injected_panic_runtime which is going away 2019-11-29 21:37:59 +01:00
Ralf Jung
fe76d33506 Add and use helper function for calling a machine function and passing it some arguments 2019-11-29 09:23:29 +01:00
Ralf Jung
824328c6d5 adjust for goto_block refactoring 2019-11-27 08:34:15 +01:00
Aaron Hill
a328683c4a
Add acos, asin, and atan foreign functions 
I copied the tests from the docs pages
 2019-11-21 17:33:30 -05:00
Aaron Hill
2750f60d4f
Update panic runtime comment 2019-11-19 15:33:14 -05:00
Aaron Hill
e02dc4af4b
Re-add comment 2019-11-19 15:31:37 -05:00
Aaron Hill
8936d67e7f
Delegate to the actual panic runtime crate 2019-11-19 10:11:25 -05:00
Ralf Jung
82374ad9bd comments and slight refactoring 2019-11-19 14:51:08 +01:00
Aaron Hill
08d3fbc76b
Support unwinding after a panic 
Fixes #658

This commit adds support for unwinding after a panic. It requires a
companion rustc PR to be merged, in order for the necessary hooks to
work properly.

Currently implemented:
* Selecting between unwind/abort mode based on the rustc Session
* Properly popping off stack frames, unwinding back the caller
* Running 'unwind' blocks in Mir terminators

Not yet implemented:
* 'Abort' terminators

This PR was getting fairly large, so I decided to open it for review without
implementing 'Abort' terminator support. This could either be added on
to this PR, or merged separately.
 2019-11-17 08:34:25 -05:00
Ralf Jung
5345636f37 use new isize_max method in FS accesses; also check full buffers for validity 2019-11-17 09:54:09 +01:00
bors
9f1aec34e1 Auto merge of #1055 - RalfJung:panic-stub, r=RalfJung 
minimal rustup for panic changes

Main patch by @Aaron1011
 2019-11-17 08:21:42 +00:00
Ralf Jung
c790317eb9 remove no-longer-needed zero checks 2019-11-14 10:30:00 +01:00
bors
09b0a8a813 Auto merge of #1022 - christianpoveda:fix-fd-access, r=RalfJung 
Fix unchecked memory access for files

This PR takes care of two problems:

- It uses `Memory::(read|write)_bytes` to guarantee that memory accesses are checked (Fixes: https://github.com/rust-lang/miri/issues/1007)
- It removes the `(get|remove)_handle_and` methods which were a little bit cumbersome to use. In particular `remove_handle_and`, because we were using it to avoid borrowing issues before the `Evaluator::memory` field was public.

@RalfJung @oli-obk
 2019-11-13 22:58:24 +00:00
Christian Poveda
4baef7120a Fix maximum isize value for target 2019-11-13 14:45:00 -05:00
Christian Poveda
edd0157069 Cap count twice 2019-11-13 11:57:20 -05:00
Steven Gu
ca983f5f80 Implments intrinsics::copysignf32 and intrinsics::copysignf64. 2019-11-13 17:41:09 +08:00
Aaron Hill
cf5b53e52f
Rustup for panic changes 
This gets Miri working again, but doesn't actually implement unwinding
 2019-11-12 19:52:15 -05:00
Christian Poveda
6e37f2f3e1 Cap count 2019-11-09 15:15:52 +01:00
Christian Poveda
10b93730d3 Fix merge conflicts 2019-11-09 10:42:45 +01:00
Ralf Jung
37b1190def rustup 2019-11-08 22:07:52 +01:00
Christian Poveda
4bbaa72dc9 Use TryFrom instead 2019-11-07 20:50:16 +01:00
Christian Poveda
f910ea135c Avoid using as cast 2019-11-05 16:47:24 -05:00
Christian Poveda
56c5e53553 Handle host's usize correctly 2019-11-04 09:38:21 -05:00
Christian Poveda
d0b4407b25 Fix casts for count check 2019-11-03 10:04:00 -06:00
Ralf Jung
955a26fb08 calling panic_if_uninhabited is not actually UB 2019-11-03 15:39:03 +01:00
bors
4f7171585f Auto merge of #961 - rust-lang:exact_div_reuse, r=RalfJung 
Use the upstream `exact_div` implementation

introduced in https://github.com/rust-lang/rust/pull/63810
 2019-11-03 09:16:55 +00:00
Ralf Jung
5a5fa15382 style 2019-11-03 10:03:30 +01:00
Oliver Scherer
7a39460e24 Use the upstream exact_div implementation 2019-11-03 09:34:48 +01:00
Ralf Jung
ddb1fc9205 store scalars where appropriate 2019-11-02 11:50:21 +01:00
Ralf Jung
15ae234a42 rustup for span in intrinsic emulation 2019-10-30 10:16:58 +01:00
Christian Poveda
06ef77bfef Check for usize to i64 overflows 2019-10-28 16:44:18 -05:00
Christian Poveda
122549fd09 Simplify read logic 2019-10-26 09:03:45 -05:00
Christian Poveda
d7967f6b05 Drop files explicitly when closing them 2019-10-26 08:54:02 -05:00
Christian Poveda
260b463bb0 Clean file handling functions 2019-10-24 09:34:48 -05:00
Ralf Jung
c87f106cac update comments and some tweaks 2019-10-24 10:27:14 +02:00
Ralf Jung
cf9340113e rustup: more flexible write_bytes avoids allocations and removes itertools dependency 2019-10-24 10:15:30 +02:00
Christian Poveda
fb4cb5bf4a Make size error distinguishable from other errors 2019-10-22 16:57:07 -05:00
Christian Poveda
be415dbeda Use new write_bytes method 2019-10-22 11:44:49 -05:00
Ralf Jung
db949af8ed fix field index 2019-10-22 10:43:16 +02:00
Ralf Jung
2690f5948a rustup: fix for write_bytes and new union rules 2019-10-22 10:13:11 +02:00
Christian Poveda
72bd25de83 Fix merge conflicts 2019-10-21 08:49:49 -05:00
Ralf Jung
d9aa20fb31 add some missing trailing full stops that slipped through review 2019-10-21 13:24:56 +02:00
Christian Poveda
8a8fa53a5d Transform the last error place to an immediate instead 2019-10-20 07:55:26 -05:00
Christian Poveda
619ccf3834 Rename set_last_error_from_io_result 2019-10-20 07:55:25 -05:00
Christian Poveda
338e51aa48 Rename consume_result 2019-10-20 07:53:55 -05:00
Christian Poveda
ed776f67ba Change last_error to a place 2019-10-20 07:42:59 -05:00
Christian Poveda
4232939319 Move last error functions to helpers 2019-10-20 07:42:59 -05:00
Ralf Jung
88c88530ec use expect_none and unwrap_none where it makes sense 2019-10-20 12:20:48 +02:00
Ralf Jung
e574c77aa2 audit our bounds checks 2019-10-19 12:39:02 +02:00
Christian Poveda
85941c7249 Rename write/read os string functions 2019-10-18 09:49:56 -05:00
Christian Poveda
68fec4b3fe Use conditional compilation properly and work with OsStrs instead 2019-10-18 09:49:56 -05:00
Christian Poveda
1241abbec4 Change helper functions to read/write 2019-10-18 09:49:55 -05:00
Christian Poveda
61da8b8428 Add OsString from/to bytes helper functions 2019-10-18 09:47:19 -05:00
Ralf Jung
5481afbaf6 cleanup now that borrow checker knows memory is a field 2019-10-18 11:33:12 +02:00
Yuki Okushi
a353e90eed Use memory field instead of memory() 2019-10-18 11:11:50 +09:00
bors
358cfd290c Auto merge of #996 - christianpoveda:unsup-wo-isolation, r=RalfJung 
Add function to error with enabled isolation

Fixes https://github.com/rust-lang/miri/issues/986
r? @RalfJung
 2019-10-16 08:17:57 +00:00
bors
49cab51ac3 Auto merge of #987 - christianpoveda:check-unsupported-fs-flags, r=RalfJung 
Error when there is an unsupported flag for opening a file

@RalfJung this is my attempt to check for undesired flags. I also changed fcntl to error when doing any other action besides getting the flags for a fd
 2019-10-16 07:52:12 +00:00
Christian Poveda
24872230dc Check that access mode flags only use the first two bits 2019-10-15 08:01:07 -05:00
Christian Poveda
78311a7132 Add function to error with enabled isolation 2019-10-15 07:33:14 -05:00
Christian Poveda
f9c768864a Use places instead of ptrs to write packed immtys 2019-10-14 16:00:40 -05:00
Christian Poveda
50618b55cd Error on negative times 2019-10-13 16:06:37 -05:00
Christian Poveda
f76f8ce63b Correct fcntl behavior 2019-10-12 20:12:26 -05:00
Christian Poveda
d73fae1b28 Remove F_SETFD command 2019-10-11 12:20:06 -05:00
Christian Poveda
a1c6797c5c Error when there is an unsupported flag 2019-10-11 11:42:12 -05:00
Christian Poveda
2cbf4afa99 Split write_c_ints into less specific helper functions 2019-10-11 11:41:11 -05:00
Christian Poveda
87b210df6c Fix sign when number of seconds is zero 2019-10-11 11:39:32 -05:00
Christian Poveda
8f4d185d1b Move time related functions to its own module 2019-10-11 11:39:31 -05:00
Christian Poveda
9f24c12624 Add helper function to write structs 2019-10-11 11:38:22 -05:00
Christian Poveda
b7863f2509 Add gettimeofday shim for macOS 2019-10-11 11:36:33 -05:00
Christian Poveda
7a6df8504f Get size of integers using libc 2019-10-11 11:36:33 -05:00
Christian Poveda
adfa2eb062 Return negative times when the current time is before the unix epoch 2019-10-11 11:36:33 -05:00
Christian Poveda
fcf04b5425 Reduce size of nanoseconds 2019-10-11 11:36:33 -05:00
Christian Poveda
aa3e9703d1 Add clock_gettime shim 2019-10-11 11:36:33 -05:00
Christian Poveda
003b257f87 Change error handling style for consistency 2019-10-11 08:20:32 -05:00
Christian Poveda
60cf06a03f Use existing tcx instead 2019-10-11 04:20:18 -05:00
Christian Poveda
67ea454647 Correct style of comments 2019-10-11 04:17:43 -05:00
Christian Poveda
1c64f29811 Add comment for the flag diff check 2019-10-11 03:55:18 -05:00
Christian Poveda
12040aae88 Add comment explaining why buffer isn't overflowed 2019-10-11 03:43:20 -05:00
Christian Poveda
c8df0171e8 Move functions to eval libc constants to helpers 2019-10-11 01:53:31 -05:00
Christian Poveda
976c976f09 Rename shims::io to shims::fs 2019-10-11 01:49:28 -05:00
Christian Poveda
187361996f Add errno_location shim for MacOS 2019-10-08 10:22:39 -05:00
Christian Poveda
ffc47de1b9 Add unlink shim to delete files 2019-10-08 08:50:58 -05:00
bors
9d03dd6364 Auto merge of #977 - christianpoveda:last-error-ptr, r=oli-obk 
Move last error into memory

These changes move the `Evaluator::last_error` into miri's memory and implement the `__errno_location()` shim (which is used by the file handling functions when they fail).
 2019-10-08 13:21:05 +00:00
Christian Poveda
459c65a4f9 Add method to consume io::Error 2019-10-08 08:18:51 -05:00
Christian Poveda
887d748114 Add __errno_location shim 2019-10-07 09:15:37 -05:00
Christian Poveda
11d7be9c6f Move last_error into memory 2019-10-07 09:15:32 -05:00
Christian Poveda
905c70cfa5 Rustfmt 2019-10-07 09:12:30 -05:00
Nicolas
0c4003631d
Add missing atomic_fence intrinsics as nops 
Fixes #972
 2019-10-05 06:12:37 -03:00
Christian Poveda
6c36a8c949 Return earlier when reading/writing 0 bytes 2019-10-02 09:12:03 -05:00
Christian Poveda
f5022b19d3 Fix dangling pointer bug for zero-sized reads 2019-10-02 08:43:23 -05:00
Christian Poveda
78e0d309ef Avoid early return after handles are removed 2019-10-01 14:07:45 -05:00
Christian Poveda
5a05c04c85 Correct name of each shim when erroring 2019-10-01 11:14:50 -05:00
Christian Poveda
cd495cb04f Add file writing capabilities 2019-10-01 11:10:37 -05:00
Christian Poveda
d0509d719c Add docs for helper functions 2019-10-01 10:31:04 -05:00
Christian Poveda
50be5a83c5 Remove return argument when fd is not found 2019-10-01 09:28:48 -05:00
Christian Poveda
644467c570 Add methods to handle invalid fides 2019-09-30 15:54:43 -05:00
Christian Poveda
efbe798e62 Avoid buffer allocation to read files 2019-09-30 14:21:45 -05:00
Christian Poveda
775246e329 Add method to consume std::io::Result 2019-09-30 14:08:12 -05:00
Christian Poveda
03ed4123c0 Add FileHandle struct 2019-09-30 11:51:09 -05:00
Christian Poveda
b540e5d24e Reserve fides for stdio and fix merge issues 2019-09-30 10:54:51 -05:00
bors
b625812092 Auto merge of #957 - christianpoveda:ptr-align-offset, r=RalfJung 
Fixes for align_offset

This addresses @RalfJung's comments in https://github.com/rust-lang/miri/pull/945
 2019-09-28 18:38:00 +00:00
Christian Poveda
ca3a917a6f Enable close call for macos 2019-09-25 11:16:11 -05:00
Christian Poveda
01f64616ad Check that the only flag change is done to enable FD_CLOEXEC 2019-09-25 11:11:20 -05:00
Christian Poveda
3726081857 Add helper function to fetch libc constants 2019-09-25 10:49:12 -05:00
Christian Poveda
79b1f91f45 First version of file handling 2019-09-25 01:17:18 -05:00
Christian Poveda
0eed5e64de Add chdir shim 2019-09-24 15:50:00 -05:00
Christian Poveda
02261e4be2 Fix comments 2019-09-24 09:29:16 -05:00
Christian Poveda
e2c54e64d1 Ignore integers 2019-09-22 21:39:17 -05:00
Christian Poveda
f736636038 Throw unsupported error when alignment is not a power of two 2019-09-22 20:56:48 -05:00
Christian Poveda
0f58289b3d fetch ERANGE value from libc 2019-09-20 11:32:07 -05:00
Christian Poveda
c0a6b5ff69 Set errno when getcwd fails 2019-09-20 03:30:55 -05:00
Christian Poveda
49275d4269 Avoid writing more bytes than necessary 2019-09-20 02:13:48 -05:00
Christian Poveda
133c2b39db Only use getcwd without isolation 2019-09-19 10:32:18 -05:00
Christian Poveda
5cf90bc786 Add getcwd shim 2019-09-18 16:13:59 -05:00
Christian Poveda
4a0b7446cf Move truncation from the main branch 2019-09-17 13:26:12 -05:00
Christian Poveda
881929f753 Add align_offset for integers 2019-09-17 11:47:01 -05:00
Christian Poveda
55863cb88e Use force_ptr instead of assert_ptr 2019-09-16 10:16:06 -05:00
Christian Poveda
fa20338c9a Use str::from_utf8 instead 2019-09-12 09:36:31 -05:00
Christian Poveda
62280b4b11 Use libcore's align_offset 2019-09-11 11:09:56 -05:00
Oliver Scherer
e479ab2640 Rustup 2019-09-06 11:10:24 +02:00
Christian Poveda
4afa3bccb0 Rewrite alloc_env_var 2019-08-29 15:03:10 -05:00
Christian Poveda
814fe99516 Add cargo-miri test for no isolation 2019-08-29 10:13:02 -05:00
Christian Poveda
9c54368cca Exclude TERM env var by default 2019-08-29 04:07:20 -05:00
Christian Poveda
c1cec3b247 Exclude env vars using flag 2019-08-28 17:57:41 -05:00