Use psinfo as fallback [gu]id source on Solaris 10

fixes giampaolo#1193

Author: gsauthof

psutil/_pssunos.py

@@ -79,7 +79,11 @@
     nice=4,
     num_threads=5,
     status=6,
-    ttynr=7)
+    ttynr=7,
+    uid=8,
+    euid=9,
+    gid=10,
+    egid=11)
 
 
 # =====================================================================
@@ -394,7 +398,10 @@ def _proc_basic_info(self):
 
     @memoize_when_activated
     def _proc_cred(self):
-        return cext.proc_cred(self.pid, self._procfs_path)
+        @wrap_exceptions
+        def proc_cred(self):
+            return cext.proc_cred(self.pid, self._procfs_path)
+        return proc_cred(self)
 
     @wrap_exceptions
     def name(self):
@@ -454,12 +461,22 @@ def ppid(self):
 
     @wrap_exceptions
     def uids(self):
-        real, effective, saved, _, _, _ = self._proc_cred()
+        try:
+            real, effective, saved, _, _, _ = self._proc_cred()
+        except AccessDenied:
+            real      = self._proc_basic_info()[proc_info_map['uid']]
+            effective = self._proc_basic_info()[proc_info_map['euid']]
+            saved     = None
         return _common.puids(real, effective, saved)
 
     @wrap_exceptions
     def gids(self):
-        _, _, _, real, effective, saved = self._proc_cred()
+        try:
+            _, _, _, real, effective, saved = self._proc_cred()
+        except AccessDenied:
+            real      = self._proc_basic_info()[proc_info_map['gid']]
+            effective = self._proc_basic_info()[proc_info_map['egid']]
+            saved     = None
         return _common.puids(real, effective, saved)
 
     @wrap_exceptions

psutil/_psutil_sunos.c

@@ -102,17 +102,19 @@ psutil_proc_basic_info(PyObject *self, PyObject *args) {
     if (! psutil_file_to_struct(path, (void *)&info, sizeof(info)))
         return NULL;
     return Py_BuildValue(
-        "ikkdiiik",
+        "ikkdiiikiiii",
         info.pr_ppid,              // parent pid
         info.pr_rssize,            // rss
         info.pr_size,              // vms
         PSUTIL_TV2DOUBLE(info.pr_start),  // create time
-        // XXX - niceness is wrong (20 instead of 0), see:
-        // https://github.com/giampaolo/psutil/issues/1082
         info.pr_lwp.pr_nice,       // nice
         info.pr_nlwp,              // no. of threads
         info.pr_lwp.pr_state,      // status code
-        info.pr_ttydev             // tty nr
+        info.pr_ttydev,            // tty nr
+        (int)info.pr_uid,          // real user id
+        (int)info.pr_euid,         // effective user id
+        (int)info.pr_gid,          // real group id
+        (int)info.pr_egid          // effective group id
         );
 }