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[ENV] Added a new env. var. BOX64_FORCE_LD_PRELOAD #3514

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Merged
ptitSeb merged 1 commit into from
Feb 14, 2026
Merged

[ENV] Added a new env. var. BOX64_FORCE_LD_PRELOAD #3514

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7 changes: 7 additions & 0 deletions docs/USAGE.md
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Original file line number Diff line number Diff line change
Expand Up @@ -373,6 +373,13 @@ Fix 64bit inodes.
* 0: Do not fix 64bit inodes. [Default]
* 1: Fix 64bit inodes.

### BOX64_FORCE_LD_PRELOAD

Force symbols from BOX64_LD_PRELOAD libraries to be resolved by RTLD_NEXT.

* 0: Do nothing. [Default]
* 1: Force symbols from BOX64_LD_PRELOAD libraries to be resolved by RTLD_NEXT.

### BOX64_IGNOREINT3

Ignore INT3 instructions.
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8 changes: 8 additions & 0 deletions docs/box64.pod
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Expand Up @@ -511,6 +511,14 @@ Fix 64bit inodes.
* 1 : Fix 64bit inodes.


=item B<BOX64_FORCE_LD_PRELOAD> =I<0|1>

Force symbols from BOX64_LD_PRELOAD libraries to be resolved by RTLD_NEXT.

* 0 : Do nothing. [Default]
* 1 : Force symbols from BOX64_LD_PRELOAD libraries to be resolved by RTLD_NEXT.


=item B<BOX64_IGNOREINT3> =I<0|1>

Ignore INT3 instructions.
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18 changes: 18 additions & 0 deletions docs/gen/usage.json
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Expand Up @@ -1099,6 +1099,24 @@
}
]
},
{
"name": "BOX64_FORCE_LD_PRELOAD",
"description": "Force symbols from BOX64_LD_PRELOAD libraries to be resolved by RTLD_NEXT.",
"category": "Compatibility",
"wine": false,
"options": [
{
"key": "0",
"description": "Do nothing.",
"default": true
},
{
"key": "1",
"description": "Force symbols from BOX64_LD_PRELOAD libraries to be resolved by RTLD_NEXT.",
"default": false
}
]
},
{
"name": "BOX64_IGNOREINT3",
"description": "Ignore INT3 instructions.",
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1 change: 1 addition & 0 deletions src/include/env.h
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Expand Up @@ -94,6 +94,7 @@ extern char* ftrace_name;
STRING(BOX64_ENV5, env5, 0) \
BOOLEAN(BOX64_EXIT, exit, 0, 0) \
BOOLEAN(BOX64_FIX_64BIT_INODES, fix_64bit_inodes, 0, 0) \
BOOLEAN(BOX64_FORCE_LD_PRELOAD, force_ld_preload, 0, 0) \
BOOLEAN(BOX64_IGNOREINT3, ignoreint3, 0, 0) \
STRING(BOX64_INSERT_ARGS, insert_args, 0) \
BOOLEAN(BOX64_INPROCESSGPU, inprocessgpu, 0, 0) \
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2 changes: 1 addition & 1 deletion src/librarian/librarian.c
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Expand Up @@ -473,7 +473,7 @@ int GetNextSymbolStartEnd(lib_t *maplib, const char* name, uintptr_t* start, uin
// search in needed libs from preloaded first, in order
if(my_context->preload)
for(int i=0; i<my_context->preload->size; ++i) {
if(next) {
if (next || BOX64ENV(force_ld_preload)) {
if(GetLibGlobalSymbolStartEnd(my_context->preload->libs[i], name, start, end, size, &weak, &version, &vername, 0, &veropt, elfsym)) {
return 1;
}
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