142 lines
4.4 KiB
C++
142 lines
4.4 KiB
C++
//===-- sanitizer_flags.cc ------------------------------------------------===//
|
|
//
|
|
// 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"
|
|
|
|
namespace __sanitizer {
|
|
|
|
void SetCommonFlagsDefaults(CommonFlags *f) {
|
|
f->symbolize = true;
|
|
f->external_symbolizer_path = 0;
|
|
f->strip_path_prefix = "";
|
|
f->fast_unwind_on_fatal = false;
|
|
f->fast_unwind_on_malloc = true;
|
|
f->handle_ioctl = false;
|
|
f->malloc_context_size = 1;
|
|
f->log_path = "stderr";
|
|
f->verbosity = 0;
|
|
f->detect_leaks = false;
|
|
f->leak_check_at_exit = true;
|
|
f->allocator_may_return_null = false;
|
|
f->print_summary = true;
|
|
}
|
|
|
|
void ParseCommonFlagsFromString(CommonFlags *f, const char *str) {
|
|
ParseFlag(str, &f->symbolize, "symbolize");
|
|
ParseFlag(str, &f->external_symbolizer_path, "external_symbolizer_path");
|
|
ParseFlag(str, &f->strip_path_prefix, "strip_path_prefix");
|
|
ParseFlag(str, &f->fast_unwind_on_fatal, "fast_unwind_on_fatal");
|
|
ParseFlag(str, &f->fast_unwind_on_malloc, "fast_unwind_on_malloc");
|
|
ParseFlag(str, &f->handle_ioctl, "handle_ioctl");
|
|
ParseFlag(str, &f->malloc_context_size, "malloc_context_size");
|
|
ParseFlag(str, &f->log_path, "log_path");
|
|
ParseFlag(str, &f->verbosity, "verbosity");
|
|
ParseFlag(str, &f->detect_leaks, "detect_leaks");
|
|
ParseFlag(str, &f->leak_check_at_exit, "leak_check_at_exit");
|
|
ParseFlag(str, &f->allocator_may_return_null, "allocator_may_return_null");
|
|
ParseFlag(str, &f->print_summary, "print_summary");
|
|
|
|
// Do a sanity check for certain flags.
|
|
if (f->malloc_context_size < 1)
|
|
f->malloc_context_size = 1;
|
|
}
|
|
|
|
static bool GetFlagValue(const char *env, const char *name,
|
|
const char **value, int *value_length) {
|
|
if (env == 0)
|
|
return false;
|
|
const char *pos = 0;
|
|
for (;;) {
|
|
pos = internal_strstr(env, name);
|
|
if (pos == 0)
|
|
return false;
|
|
if (pos != env && ((pos[-1] >= 'a' && pos[-1] <= 'z') || pos[-1] == '_')) {
|
|
// Seems to be middle of another flag name or value.
|
|
env = pos + 1;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
pos += internal_strlen(name);
|
|
const char *end;
|
|
if (pos[0] != '=') {
|
|
end = pos;
|
|
} else {
|
|
pos += 1;
|
|
if (pos[0] == '"') {
|
|
pos += 1;
|
|
end = internal_strchr(pos, '"');
|
|
} else if (pos[0] == '\'') {
|
|
pos += 1;
|
|
end = internal_strchr(pos, '\'');
|
|
} else {
|
|
// Read until the next space or colon.
|
|
end = pos + internal_strcspn(pos, " :");
|
|
}
|
|
if (end == 0)
|
|
end = pos + internal_strlen(pos);
|
|
}
|
|
*value = pos;
|
|
*value_length = end - pos;
|
|
return true;
|
|
}
|
|
|
|
static bool StartsWith(const char *flag, int flag_length, const char *value) {
|
|
if (!flag || !value)
|
|
return false;
|
|
int value_length = internal_strlen(value);
|
|
return (flag_length >= value_length) &&
|
|
(0 == internal_strncmp(flag, value, value_length));
|
|
}
|
|
|
|
void ParseFlag(const char *env, bool *flag, const char *name) {
|
|
const char *value;
|
|
int value_length;
|
|
if (!GetFlagValue(env, name, &value, &value_length))
|
|
return;
|
|
if (StartsWith(value, value_length, "0") ||
|
|
StartsWith(value, value_length, "no") ||
|
|
StartsWith(value, value_length, "false"))
|
|
*flag = false;
|
|
if (StartsWith(value, value_length, "1") ||
|
|
StartsWith(value, value_length, "yes") ||
|
|
StartsWith(value, value_length, "true"))
|
|
*flag = true;
|
|
}
|
|
|
|
void ParseFlag(const char *env, int *flag, const char *name) {
|
|
const char *value;
|
|
int value_length;
|
|
if (!GetFlagValue(env, name, &value, &value_length))
|
|
return;
|
|
*flag = static_cast<int>(internal_atoll(value));
|
|
}
|
|
|
|
static LowLevelAllocator allocator_for_flags;
|
|
|
|
void ParseFlag(const char *env, const char **flag, const char *name) {
|
|
const char *value;
|
|
int value_length;
|
|
if (!GetFlagValue(env, name, &value, &value_length))
|
|
return;
|
|
// Copy the flag value. Don't use locks here, as flags are parsed at
|
|
// tool startup.
|
|
char *value_copy = (char*)(allocator_for_flags.Allocate(value_length + 1));
|
|
internal_memcpy(value_copy, value, value_length);
|
|
value_copy[value_length] = '\0';
|
|
*flag = value_copy;
|
|
}
|
|
|
|
} // namespace __sanitizer
|