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2b06118d5f2d0abbec873b4310c40b3e1006d74e
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218 Commits

Author SHA1 Message Date
Jeremy Soller 2b06118d5f Fix deadlock when logging scopes 2025-05-06 21:50:38 -06:00
Jeremy Soller 78bab94ee0 Add end of dynamic library mapping to debug messages 2025-05-06 20:45:39 -06:00
4lDO2 e6c06a7cf7 Fix signals for spawned threads, and async signal waiting. 2025-04-19 19:27:03 +02:00
4lDO2 59090a83f4 Fix thread+proc fd init in ld.so 2025-04-19 19:26:59 +02:00
4lDO2 779c1e60c5 Add todo!() to fix compilation. 2025-04-19 19:26:58 +02:00
4lDO2 ad5efd0f11 Reach init fork 2025-04-19 19:26:57 +02:00
Anhad Singh c64058c8b7 tcb: aarch64 2025-04-20 02:41:35 +10:00
Jeremy Soller 228d53dcd5 More improvements for relocation handling 2025-04-18 16:03:09 -06:00
Jeremy Soller 03f863d742 ld_so: better support for other arches 2025-04-18 14:26:39 -06:00
Jeremy Soller 310b097da6 Fix check for Sym size 2025-04-18 12:39:27 -06:00
Josh Megnauth 51c04d2470 Use C string literals & deprecate c_str! 2025-03-14 21:17:53 -04:00
Jeremy Soller da174f9626 Fixes for 32-bit builds 2025-02-07 09:18:56 -07:00
Anhad Singh d3073fdad4 feat(ld.so): more debug info for scopes 
When scopes is set for `LD_DEBUG`, more debug information is displayed
now,

Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2025-01-19 00:11:51 +11:00
Anhad Singh 99449094d4 chore: formatting 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2025-01-19 00:03:07 +11:00
Anhad Singh 4a08220664 fix(ld.so): copy relocations 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2025-01-18 23:51:53 +11:00
Anhad Singh e3dc5d0617 chore(dso): remove unused members 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2025-01-18 21:20:10 +11:00
Anhad Singh 3440985729 fix(dso): 32-bit 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2025-01-15 21:32:40 +11:00
Anhad Singh 07ff79069e feat(ld.so): add support for DT_RELR 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2025-01-15 13:49:27 +11:00
Jeremy Soller a3c12e27e4 Fix build for i686 2025-01-14 18:01:26 -07:00
Anhad Singh b9e0505715 fix(ld.so): less locks 
Acquire the global scope lock at the start of relocate.

Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2025-01-13 23:48:03 +11:00
Jeremy Soller af50d18d16 Return error instead of panic when load_library cannot find root DSO 2025-01-09 13:33:29 -07:00
Jeremy Soller 02520b194e Fix compilation with trace feature 2025-01-09 12:23:23 -07:00
Anhad Singh aae27c5e0c feat(ld.so): switch to object crate 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2025-01-08 16:50:47 +11:00
Anhad Singh e49072655c feat(ld.so): partially switch to object 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2025-01-08 16:50:10 +11:00
Anhad Singh e219f9768e feat(ld.so): GNU hash table 
Note that the ELF specification mandates the presence of either the GNU
hash table or SysV hash table. See Figure 2-7. Dynamic Array Tags.

Also both can be present, though that is not currently handled.

BLAZINGLY FAST!

Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2025-01-08 16:48:26 +11:00
Anhad Singh bfe1c0b545 fix(ld.so): redox build 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-31 19:30:37 +11:00
Anhad Singh 01e6eda258 misc(dlfcn): cleanup 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-31 19:03:05 +11:00
Anhad Singh 42d884c6a3 fix(ld.so): errors UB 
Currently, how ld.so errors are handled by functions in dlfcn is wrong.
dlopen calls `linker.load_library` which returns a
`Result<ObjectHandler, goblin::Error>`. Now `goblin::Error` may have
variants that are heap allocated. For example:
`Error::Malformed(format!("invalid path: '{}': {}", path, err))`. The
error string would be allocated by ld.so's allocator but will be dropped
inside libc. This is UB.

After this patch, we now return a custom `DlError` instead. To get more
information about the error, `LD_DEBUG=all` can be set.

Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-31 18:35:20 +11:00
Anhad Singh 9cf72fd0b2 feat(ld.so): add all option for LD_DEBUG 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-31 18:00:45 +11:00
Anhad Singh 60f700fb50 chore(linker): remove todo 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-31 15:26:23 +11:00
Anhad Singh c25292ae21 misc(ld.so): clippy fixes 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-31 15:25:40 +11:00
Anhad Singh cfe89f828a feat: rwlock instead of mutex for global scope 
* Rwlock -> InnerRwLock
* RwLock makes use of InnerRwLock.

Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-31 00:54:52 +11:00
Anhad Singh 2be4316aec feat(dlfcn): return DSO as the handle 
Fine because:
> The value of this handle should not be interpreted in any way by the
> caller.
From: https://pubs.opengroup.org/onlinepubs/009696599/functions/dlopen.html

* Add tests for unload
* Implement NOLOAD so we can test that the loaded object has been
  destroyed.
* Minor cleanup.

Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-25 16:17:51 +11:00
Anhad Singh 1612c78774 fix(ld.so): disable lazy binding on non-x86_64 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-24 20:51:53 +11:00
Anhad Singh 023a005688 fix(ld.so): non-pie lazy 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-24 20:51:53 +11:00
Anhad Singh 1db68ab978 feat(ld.so): scopes 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-24 20:51:53 +11:00
Anhad Singh 13d819ac89 misc(ld.so: __plt_resolve_inner): println -> trace 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-24 20:51:53 +11:00
Anhad Singh e3587017f6 fix(ld.so): stub plt stub for non-x86_64 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-24 20:51:53 +11:00
Anhad Singh 0a0ecb018f fix(ld.so: adjust_stack): remove dead code 
Does not do anything.

Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-24 20:51:53 +11:00
Anhad Singh c6fd0517ac feat(ld.so: config): handle LD_BIND_NOW 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-24 20:51:53 +11:00
Anhad Singh 5ae1b8e974 feat(ld.so): lazy binding 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-24 20:51:53 +11:00
Anhad Singh 30970e111a feat(ld.so): enable warnings just for ld.so 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-24 20:51:53 +11:00
Anhad Singh 959982b8a4 fix(ld.so): use Strtab::get_at() 
> use of deprecated method `goblin::strtab::Strtab::<'a>::get`: Bad performance, use get_at() instead

Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-24 20:51:53 +11:00
Anhad Singh cc5e0ceebc fix(ld.so): function signature 
No longer expects a self TLS.

Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-24 20:51:53 +11:00
Anhad Singh eb82f9afeb misc(lint): unused variables and imports 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-24 20:51:53 +11:00
Anhad Singh 500848bc76 fix(ld.so): remove unreachable loop {} 
_exit() is noreturn

Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-24 20:51:53 +11:00
Anhad Singh 39c8cc864d fix(ci): formatting 
Was my fault.

Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-17 03:14:33 +11:00
Anhad Singh de9e8a6177 feat(ld.so): config 
Currently supported options are `LD_DEBUG` and `LD_LIBRARY_PATH`.

Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-17 01:07:17 +11:00
Anhad Singh 9928091aad fix(ci) 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-12 16:11:42 +11:00
Anhad Singh d3bab6eeee fix(redox: ld.so): unmap old TCB 
Signed-off-by: Anhad Singh <andypython@protonmail.com>
 2024-12-12 16:00:11 +11:00