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Merge "[MTE] add sysprop to set mte state globally"

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Treehugger Robot 2022-02-08 16:47:32 +00:00 committed by Gerrit Code Review
commit 2be3e92943
1 changed files with 4 additions and 2 deletions
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6
libc/bionic/libc_init_static.cpp
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@ -237,6 +237,7 @@ static unsigned __get_memtag_note(const ElfW(Phdr)* phdr_start, size_t phdr_ct,
// level into *level. // level into *level.
static bool get_environment_memtag_setting(HeapTaggingLevel* level) { static bool get_environment_memtag_setting(HeapTaggingLevel* level) {
static const char kMemtagPrognameSyspropPrefix[] = "arm64.memtag.process."; static const char kMemtagPrognameSyspropPrefix[] = "arm64.memtag.process.";
static const char kMemtagGlobalSysprop[] = "persist.arm64.memtag.default";
const char* progname = __libc_shared_globals()->init_progname; const char* progname = __libc_shared_globals()->init_progname;
if (progname == nullptr) return false; if (progname == nullptr) return false;
@ -250,9 +251,10 @@ static bool get_environment_memtag_setting(HeapTaggingLevel* level) {
async_safe_format_buffer(sysprop_name, sysprop_size, "%s%s", kMemtagPrognameSyspropPrefix, async_safe_format_buffer(sysprop_name, sysprop_size, "%s%s", kMemtagPrognameSyspropPrefix,
basename); basename);
const char* sys_prop_names[] = {sysprop_name, kMemtagGlobalSysprop};
if (!get_config_from_env_or_sysprops("MEMTAG_OPTIONS", &sysprop_name, if (!get_config_from_env_or_sysprops("MEMTAG_OPTIONS", sys_prop_names, arraysize(sys_prop_names),
/* sys_prop_names_size */ 1, options_str, kOptionsSize)) { options_str, kOptionsSize)) {
return false; return false;
} }