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Swift: hard code libc.dylib path on macOS

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Also, handle the corner case where loading libc fails.
This commit is contained in:
Paolo Tranquilli
2022-12-15 12:35:24 +01:00
parent 3084eda28a
commit 208388e04d
1 changed files with 11 additions and 2 deletions
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13
swift/extractor/remapping/SwiftFileInterception.cpp
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@@ -12,7 +12,8 @@
#include "swift/extractor/infra/file/FileHash.h"
#ifdef __APPLE__
#define SHARED_LIBC "libc.dylib"
// path is hardcoded as otherwise redirection could break when setting DYLD_FALLBACK_LIBRARY_PATH
#define SHARED_LIBC "/usr/lib/libc.dylib"
#define FILE_CREATION_MODE O_CREAT
#else
#define SHARED_LIBC "libc.so.6"
@@ -24,8 +25,16 @@ namespace fs = std::filesystem;
namespace {
namespace original {
void* openLibC() {
if (auto ret = dlopen(SHARED_LIBC, RTLD_LAZY)) {
return ret;
}
std::cerr << "Unable to dlopen " SHARED_LIBC "!\n";
std::abort();
}
void* libc() {
static auto ret = dlopen(SHARED_LIBC, RTLD_LAZY);
static auto ret = openLibC();
return ret;
}