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libc: isolate guest setenv from host environment. Fix linux debugging

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This commit is contained in:
nmzik
2026-08-29 02:19:46 +04:00
parent b870a77176
commit e559771a08
2 changed files with 18 additions and 20 deletions
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.vscode/launch.json
Vendored
+17 -2
View File
@@ -37,8 +37,16 @@
"type": "cppdbg",
"program": "${workspaceFolder}/_Build/vscode-clang/kyty_emulator",
"cwd": "${workspaceFolder}/_Build/vscode-clang",
"externalConsole": false,
"MIMode": "gdb",
"miDebuggerPath": "/usr/bin/gdb"
"miDebuggerPath": "/usr/bin/gdb",
"setupCommands": [
{
"description": "Pass Kyty's internal signals to its handlers",
"text": "handle SIG37 SIGSEGV SIGBUS SIGILL nostop noprint pass",
"ignoreFailures": false
}
]
}
},
{
@@ -49,7 +57,14 @@
"linux": {
"type": "cppdbg",
"MIMode": "gdb",
"miDebuggerPath": "/usr/bin/gdb"
"miDebuggerPath": "/usr/bin/gdb",
"setupCommands": [
{
"description": "Pass Kyty's internal signals to its handlers",
"text": "handle SIG37 SIGSEGV SIGBUS SIGILL nostop noprint pass",
"ignoreFailures": false
}
]
}
}
]
src/libs/libC.cpp
+1 -18
View File
@@ -327,25 +327,8 @@ static KYTY_SYSV_ABI int setenv(const char* name, const char* value, int overwri
return -1;
}
if (overwrite == 0 && std::getenv(name) != nullptr) {
return 0;
}
#if KYTY_PLATFORM == KYTY_PLATFORM_WINDOWS
const auto ret = ::_putenv_s(name, value);
if (ret != 0) {
*Posix::GetErrorAddr() = ret;
return -1;
}
// Guest environment changes must not leak into emulator host libraries.
return 0;
#else
const auto ret = ::setenv(name, value, overwrite);
if (ret != 0) {
*Posix::GetErrorAddr() = errno;
return -1;
}
return 0;
#endif
}
static KYTY_SYSV_ABI int64_t libc_time(int64_t* timer) {