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//===-- sanitizer_flags.cc ------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of ThreadSanitizer/AddressSanitizer runtime.
//
//===----------------------------------------------------------------------===//
#include "sanitizer_flags.h"
#include "sanitizer_common.h"
#include "sanitizer_libc.h"
#include "sanitizer_list.h"
#include "sanitizer_flag_parser.h"
namespace __sanitizer {
CommonFlags common_flags_dont_use;
struct FlagDescription {
const char *name;
const char *description;
FlagDescription *next;
};
IntrusiveList<FlagDescription> flag_descriptions;
// If set, the tool will install its own SEGV signal handler by default.
#ifndef SANITIZER_NEEDS_SEGV
# define SANITIZER_NEEDS_SEGV 1
#endif
void CommonFlags::SetDefaults() {
#define COMMON_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue;
#include "sanitizer_flags.inc"
#undef COMMON_FLAG
}
void CommonFlags::CopyFrom(const CommonFlags &other) {
internal_memcpy(this, &other, sizeof(*this));
}
// Copy the string from "s" to "out", replacing "%b" with the binary basename.
static void SubstituteBinaryName(const char *s, char *out, uptr out_size) {
char *out_end = out + out_size;
while (*s && out < out_end - 1) {
if (s[0] != '%' || s[1] != 'b') { *out++ = *s++; continue; }
const char *base = GetProcessName();
CHECK(base);
while (*base && out < out_end - 1)
*out++ = *base++;
s += 2; // skip "%b"
}
*out = '\0';
}
class FlagHandlerInclude : public FlagHandlerBase {
FlagParser *parser_;
bool ignore_missing_;
public:
explicit FlagHandlerInclude(FlagParser *parser, bool ignore_missing)
: parser_(parser), ignore_missing_(ignore_missing) {}
bool Parse(const char *value) final {
if (internal_strchr(value, '%')) {
char *buf = (char *)MmapOrDie(kMaxPathLength, "FlagHandlerInclude");
SubstituteBinaryName(value, buf, kMaxPathLength);
bool res = parser_->ParseFile(buf, ignore_missing_);
UnmapOrDie(buf, kMaxPathLength);
return res;
}
return parser_->ParseFile(value, ignore_missing_);
}
};
void RegisterIncludeFlags(FlagParser *parser, CommonFlags *cf) {
FlagHandlerInclude *fh_include = new (FlagParser::Alloc) // NOLINT
FlagHandlerInclude(parser, /*ignore_missing*/ false);
parser->RegisterHandler("include", fh_include,
"read more options from the given file");
FlagHandlerInclude *fh_include_if_exists = new (FlagParser::Alloc) // NOLINT
FlagHandlerInclude(parser, /*ignore_missing*/ true);
parser->RegisterHandler(
"include_if_exists", fh_include_if_exists,
"read more options from the given file (if it exists)");
}
void RegisterCommonFlags(FlagParser *parser, CommonFlags *cf) {
#define COMMON_FLAG(Type, Name, DefaultValue, Description) \
RegisterFlag(parser, #Name, Description, &cf->Name);
#include "sanitizer_flags.inc"
#undef COMMON_FLAG
RegisterIncludeFlags(parser, cf);
}
} // namespace __sanitizer
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