846318e716
WIP: Attempt implementing fexec in userspace.
2022-07-27 10:51:43 +02:00
4d7da495f5
Fix "clone grant using fmap"
...
This does the same as the previous MR, but fixes the issue where the
parent process got the mapping (and at the wrong address) and not the
child process.
2022-04-11 21:31:36 +02:00
e72fd5a0e4
Fix a kernel deadlock in empty().
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For more information, see https://gitlab.redox-os.org/4lDO2/kernel/-/commit/b3b5d1b864eec030d53ccd2ab907c68958f140aa
2022-04-09 13:38:59 +02:00
87b3bef06c
Revert "Merge branch 'clone_grant_using_fmap' into 'master'"
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This reverts merge request !190
2022-03-30 14:54:49 +00:00
a3356c3fdd
Clone grant using fmap
2021-12-30 11:27:44 +01:00
cd3dcf153e
Do not print interpreter
2021-12-01 08:40:11 -07:00
4f259e3589
Workaround for thread race conditions
2021-11-30 18:03:34 -07:00
515cab03eb
Fix a number of warnings
2021-11-29 20:01:27 -07:00
5f4978a6dc
Return ENOMEM rather than panicking for PML4 alloc.
2021-08-11 17:46:40 +02:00
67cc6799bd
Fix possible UB by checking for null allocating FX.
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Namely, the global allocator API in Rust, actually only returns a null
pointer on failure, rather than wrapping it in a Result, which AllocRef
does. Since Box::from_raw(null) is direct UB, this can in theory lead to
very strange behavior.
2021-08-11 17:46:40 +02:00
465c461b60
WIP: Stop using recursive mapping.
...
Note that this is very preliminary, and I merely got my already freezing
kernel branch not to triple fault, but I would probably apply this patch
to upstream.
What is changed here, is that rather than relying on recursive mapping
for accessing page table frames, it now uses linear translation
(virt=phys+KERNEL_OFFSET). The only problem is that the paging code now
makes assumptions that the entire physical address space remains mapped,
which is not necessarily the case on x86_64 architecturally, even though
systems with RAM more than a PML4 are very rare. We'd probably lazily
(but linearly) map physical address space using huge pages.
2021-08-11 17:46:33 +02:00
87241a9d3c
Pass AT_PHDR via a grant rather than the stack.
2021-08-01 14:57:41 +02:00
3eedbeb14d
WIP: Let userspace manage fsbase/gsbase and TLS.
2021-08-01 12:09:22 +02:00
0968e4f87e
Support fsgsbase at compile time.
2021-07-31 10:12:59 +02:00
d3cf4db47b
Prerequisites for risv64 support
2021-05-12 20:23:53 -06:00
558109a9cb
Put the KPCRs in high memory, in their own PML4.
...
This also removes the need to do another semi-expensive remap when
cloning processes, since the KPCRs (for kernel TLS) are no longer stored
in the user PML4.
2021-05-06 21:21:37 +02:00
3eacbdda2a
Remove unnecessary exit() diff.
2021-05-06 19:49:58 +02:00
fd97fa80bb
Move pid back to inner scope in exit() handler.
2021-05-06 19:49:58 +02:00
9b4ce0d0cc
WIP: Fix userspace ACPI shutdown.
2021-05-06 19:49:58 +02:00
8d61c79b23
Use RMM TableKind and fix x86_64 compilation
2021-05-03 21:15:46 -06:00
2aa4d8caf5
Merge remote-tracking branch 'origin/aarch64-rebase' into riscv64
2021-05-03 20:52:59 -06:00
17c261553b
Fixes for building x86_64
2021-05-03 20:43:18 -06:00
b9448274fc
Switch to using RMM PageFlags
2021-05-03 17:28:08 -06:00
dd0616cc8f
Use RMM for TLB flushing
2021-05-03 12:42:16 -06:00
d331f72f2a
Use UTF-8 for all paths
2021-04-28 20:06:07 -06:00
8fcd375bd9
Switch Context::grants to RwLock
2021-04-28 20:04:27 -06:00
41bea0086f
Switch Context::actions to RwLock
2021-04-28 20:03:29 -06:00
83dea72a50
Switch Context::files to RwLock
2021-04-28 20:03:25 -06:00
c7aba8fdfd
Switch Context::cwd to using RwLock
2021-04-28 20:03:18 -06:00
a9bee0bbdc
Require UTF-8 for context name
2021-04-28 20:03:12 -06:00
b26c3e0ae9
Make context name a RwLock
2021-04-28 20:03:05 -06:00
f90033e0e1
Use PHYS_OFFSET instead of KERNEL_OFFSET to refer to the physmap
2021-04-13 20:38:54 -06:00
031496ff0d
Fix "Grant should not exist" errors.
...
This is done by making sure that when empty() is called on a context,
the grants Arc will be replaced with a new unused Arc, hence
decrementing the refcount. Previously this was only done when the
context was actually reaped, but since there is no guarantee as far as I
am aware about when this must happen, the grants could be completely
leaked, leading to the error.
2021-02-27 15:36:12 +01:00
c913c3be80
Use sysretq in usermode().
2021-02-15 19:53:24 +01:00
6db78cce24
Use UTF-8 for all paths
2021-02-14 13:45:03 -07:00
c19bd573b5
Switch Context::grants to RwLock
2021-02-13 13:06:13 -07:00
2611985a38
Switch Context::actions to RwLock
2021-02-13 13:01:20 -07:00
bfaf8438a1
Switch Context::files to RwLock
2021-02-13 12:57:53 -07:00
55d2467420
Switch Context::cwd to using RwLock
2021-02-13 12:24:19 -07:00
238702f7d1
Require UTF-8 for context name
2021-02-13 12:16:47 -07:00
b9f4a915ea
Make context name a RwLock
2021-02-13 11:10:21 -07:00
1e10cac3e1
aarch64: Increase storage for FP context to consider AArch64's needs
...
Brute-forcing this at present. Would be better to wrap this
conditionally for the architecture.
2021-01-28 16:51:50 +00:00
4dbfaf3ec1
Nit: Add missing close brace in code comment
2021-01-27 17:19:37 +00:00
4a215c7c2c
aarch64: exception management and clone fixups
2021-01-26 18:17:09 +00:00
78d1cd1798
syscall: process: empty: Use user-space specific page table
2021-01-21 11:53:35 +00:00
f1db56f026
aarch64: clone: Further uspace and kspace mods
2021-01-18 21:55:42 +00:00
9429032cec
aarch64: clone: Further clone_ret + tpidr_el0 fixes
2021-01-18 21:53:04 +00:00
fd0336692d
aarch64: clone: Introduce kernel and user space specific mods
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At present these are done 'wholesale' without any regard for x86_64.
That needs to change eventually.
2021-01-18 21:50:19 +00:00
95bd8f2013
clone: Make stack manipulation arch specific
2021-01-17 10:26:49 +00:00
ae3a55f5d1
Introduce a PageTableType enum to help distinguish User and Kernel Tables
2021-01-15 09:12:30 -07:00
4lDO2