static bool
GetFreeBSDProcessUserAndGroup(ProcessInstanceInfo &process_info)
{
struct kinfo_proc proc_kinfo;
size_t proc_kinfo_size;
if (process_info.ProcessIDIsValid())
{
int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID,
(int)process_info.GetProcessID() };
proc_kinfo_size = sizeof(struct kinfo_proc);
if (::sysctl (mib, 4, &proc_kinfo, &proc_kinfo_size, NULL, 0) == 0)
{
if (proc_kinfo_size > 0)
{
process_info.SetParentProcessID (proc_kinfo.ki_ppid);
process_info.SetUserID (proc_kinfo.ki_ruid);
process_info.SetGroupID (proc_kinfo.ki_rgid);
process_info.SetEffectiveUserID (proc_kinfo.ki_uid);
if (proc_kinfo.ki_ngroups > 0)
process_info.SetEffectiveGroupID (proc_kinfo.ki_groups[0]);
else
process_info.SetEffectiveGroupID (UINT32_MAX);
return true;
}
}
}
process_info.SetParentProcessID (LLDB_INVALID_PROCESS_ID);
process_info.SetUserID (UINT32_MAX);
process_info.SetGroupID (UINT32_MAX);
process_info.SetEffectiveUserID (UINT32_MAX);
process_info.SetEffectiveGroupID (UINT32_MAX);
return false;
}
static bool
GetNetBSDProcessUserAndGroup(ProcessInstanceInfo &process_info)
{
::kvm_t *kdp;
char errbuf[_POSIX2_LINE_MAX]; /* XXX: error string unused */
struct ::kinfo_proc2 *proc_kinfo;
const int pid = process_info.GetProcessID();
int nproc;
if (!process_info.ProcessIDIsValid())
goto error;
if ((kdp = ::kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf)) == NULL)
goto error;
if ((proc_kinfo = ::kvm_getproc2(kdp, KERN_PROC_PID, pid,
sizeof(struct ::kinfo_proc2),
&nproc)) == NULL) {
::kvm_close(kdp);
goto error;
}
if (nproc < 1) {
::kvm_close(kdp); /* XXX: we don't check for error here */
goto error;
}
process_info.SetParentProcessID (proc_kinfo->p_ppid);
process_info.SetUserID (proc_kinfo->p_ruid);
process_info.SetGroupID (proc_kinfo->p_rgid);
process_info.SetEffectiveUserID (proc_kinfo->p_uid);
process_info.SetEffectiveGroupID (proc_kinfo->p_gid);
::kvm_close(kdp); /* XXX: we don't check for error here */
return true;
error:
process_info.SetParentProcessID (LLDB_INVALID_PROCESS_ID);
process_info.SetUserID (UINT32_MAX);
process_info.SetGroupID (UINT32_MAX);
process_info.SetEffectiveUserID (UINT32_MAX);
process_info.SetEffectiveGroupID (UINT32_MAX);
return false;
}
static void
GetLinuxProcessUserAndGroup (lldb::pid_t pid, ProcessInstanceInfo &process_info, lldb::pid_t &tracerpid)
{
tracerpid = 0;
uint32_t rUid = UINT32_MAX; // Real User ID
uint32_t eUid = UINT32_MAX; // Effective User ID
uint32_t rGid = UINT32_MAX; // Real Group ID
uint32_t eGid = UINT32_MAX; // Effective Group ID
// Read the /proc/$PID/status file and parse the Uid:, Gid:, and TracerPid: fields.
lldb::DataBufferSP buf_sp = ReadProcPseudoFile (pid, "status");
static const char uid_token[] = "Uid:";
char *buf_uid = strstr ((char *)buf_sp->GetBytes(), uid_token);
if (buf_uid)
{
// Real, effective, saved set, and file system UIDs. Read the first two.
buf_uid += sizeof(uid_token);
rUid = strtol (buf_uid, &buf_uid, 10);
eUid = strtol (buf_uid, &buf_uid, 10);
}
static const char gid_token[] = "Gid:";
char *buf_gid = strstr ((char *)buf_sp->GetBytes(), gid_token);
if (buf_gid)
{
// Real, effective, saved set, and file system GIDs. Read the first two.
buf_gid += sizeof(gid_token);
rGid = strtol (buf_gid, &buf_gid, 10);
eGid = strtol (buf_gid, &buf_gid, 10);
}
static const char tracerpid_token[] = "TracerPid:";
char *buf_tracerpid = strstr((char *)buf_sp->GetBytes(), tracerpid_token);
if (buf_tracerpid)
{
// Tracer PID. 0 if we're not being debugged.
buf_tracerpid += sizeof(tracerpid_token);
tracerpid = strtol (buf_tracerpid, &buf_tracerpid, 10);
}
process_info.SetUserID (rUid);
process_info.SetEffectiveUserID (eUid);
process_info.SetGroupID (rGid);
process_info.SetEffectiveGroupID (eGid);
}
static bool GetStatusInfo(::pid_t Pid, ProcessInstanceInfo &ProcessInfo,
ProcessState &State, ::pid_t &TracerPid) {
auto BufferOrError = getProcFile(Pid, "status");
if (!BufferOrError)
return false;
llvm::StringRef Rest = BufferOrError.get()->getBuffer();
while(!Rest.empty()) {
llvm::StringRef Line;
std::tie(Line, Rest) = Rest.split('\n');
if (Line.consume_front("Gid:")) {
// Real, effective, saved set, and file system GIDs. Read the first two.
Line = Line.ltrim();
uint32_t RGid, EGid;
Line.consumeInteger(10, RGid);
Line = Line.ltrim();
Line.consumeInteger(10, EGid);
ProcessInfo.SetGroupID(RGid);
ProcessInfo.SetEffectiveGroupID(EGid);
} else if (Line.consume_front("Uid:")) {
// Real, effective, saved set, and file system UIDs. Read the first two.
Line = Line.ltrim();
uint32_t RUid, EUid;
Line.consumeInteger(10, RUid);
Line = Line.ltrim();
Line.consumeInteger(10, EUid);
ProcessInfo.SetUserID(RUid);
ProcessInfo.SetEffectiveUserID(EUid);
} else if (Line.consume_front("PPid:")) {
::pid_t PPid;
Line.ltrim().consumeInteger(10, PPid);
ProcessInfo.SetParentProcessID(PPid);
} else if (Line.consume_front("State:")) {
char S = Line.ltrim().front();
switch (S) {
case 'R':
State = ProcessState::Running;
break;
case 'S':
State = ProcessState::Sleeping;
break;
case 'D':
State = ProcessState::DiskSleep;
break;
case 'Z':
State = ProcessState::Zombie;
break;
case 'T':
State = ProcessState::TracedOrStopped;
break;
case 'W':
State = ProcessState::Paging;
break;
}
} else if (Line.consume_front("TracerPid:")) {
Line = Line.ltrim();
Line.consumeInteger(10, TracerPid);
}
}
return true;
}
