diff options
Diffstat (limited to 'lldb/source/Host/macosx/objcxx')
| -rw-r--r-- | lldb/source/Host/macosx/objcxx/Host.mm | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/lldb/source/Host/macosx/objcxx/Host.mm b/lldb/source/Host/macosx/objcxx/Host.mm index 3c1d117..7120892 100644 --- a/lldb/source/Host/macosx/objcxx/Host.mm +++ b/lldb/source/Host/macosx/objcxx/Host.mm @@ -1210,6 +1210,39 @@ static Status LaunchProcessPosixSpawn(const char *exe_path, } } + if (launch_info.GetFlags().Test(eLaunchFlagMemoryTagging)) { + // The following function configures the spawn attributes to launch the + // process with memory tagging explicitly enabled. We look it up + // dynamically since it is only available on newer OS. Does nothing on + // hardware which does not support MTE. + // + // int posix_spawnattr_set_use_sec_transition_shims_np( + // posix_spawnattr_t *attr, uint32_t flags); + // + using posix_spawnattr_set_use_sec_transition_shims_np_t = + int (*)(posix_spawnattr_t *attr, uint32_t flags); + auto posix_spawnattr_set_use_sec_transition_shims_np_fn = + (posix_spawnattr_set_use_sec_transition_shims_np_t)dlsym( + RTLD_DEFAULT, "posix_spawnattr_set_use_sec_transition_shims_np"); + if (posix_spawnattr_set_use_sec_transition_shims_np_fn) { + error = + Status(posix_spawnattr_set_use_sec_transition_shims_np_fn(&attr, 0), + eErrorTypePOSIX); + if (error.Fail()) { + LLDB_LOG(log, + "error: {0}, " + "posix_spawnattr_set_use_sec_transition_shims_np(&attr, 0)", + error); + return error; + } + } else { + LLDB_LOG(log, + "error: posix_spawnattr_set_use_sec_transition_shims_np not " + "available", + error); + } + } + // Don't set the binpref if a shell was provided. After all, that's only // going to affect what version of the shell is launched, not what fork of // the binary is launched. We insert "arch --arch <ARCH> as part of the |