X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fpython-systemd%2F_reader.c;h=650439640489e34cb914f3bca6f1660c3ef27b74;hp=ce6631782f8003d6065a7f588e904d3fce073a45;hb=ecb6dfe117a8890a86c7e586fb2315bf44aed882;hpb=25523db4e1a3da09916ed69c1e90a52d027ac765

diff --git a/src/python-systemd/_reader.c b/src/python-systemd/_reader.c
index ce6631782..650439640 100644
--- a/src/python-systemd/_reader.c
+++ b/src/python-systemd/_reader.c
@@ -1,33 +1,66 @@
-/*
-_reader - Python module that reads systemd journal similar to journalctl
-Copyright (C) 2012  Steven Hiscocks
-
-This library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Lesser General Public
-License as published by the Free Software Foundation; either
-version 2.1 of the License, or (at your option) any later version.
-
-This library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Lesser General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public
-License along with this library; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-*/
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2013 Steven Hiscocks, Zbigniew Jędrzejewski-Szmek
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
 #include <systemd/sd-journal.h>
 
 #include <Python.h>
 #include <structmember.h>
 #include <datetime.h>
 
+#if PY_MAJOR_VERSION >=3
+# define unicode_FromStringAndSize PyUnicode_FromStringAndSize
+# define unicode_FromString PyUnicode_FromString
+# define long_FromLong PyLong_FromLong
+# define long_FromSize_t PyLong_FromSize_t
+# define long_Check PyLong_Check
+# define long_AsLong PyLong_AsLong
+#else
+/* Python 3 type naming convention is used */
+# define unicode_FromStringAndSize PyString_FromStringAndSize
+# define unicode_FromString PyString_FromString
+# define long_FromLong PyInt_FromLong
+# define long_FromSize_t PyInt_FromSize_t
+# define long_Check PyInt_Check
+# define long_AsLong PyInt_AsLong
+#endif
+
 typedef struct {
     PyObject_HEAD
     sd_journal *j;
 } Journal;
 static PyTypeObject JournalType;
 
+static int set_error(int r, const char* path, const char* invalid_message) {
+    if (r >= 0)
+        return r;
+    if (r == -EINVAL && invalid_message)
+        PyErr_SetString(PyExc_ValueError, invalid_message);
+    else if (r == -ENOMEM)
+        PyErr_SetString(PyExc_MemoryError, "Not enough memory");
+    else {
+        errno = -r;
+        PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
+    }
+    return 1;
+}
+
 static void
 Journal_dealloc(Journal* self)
 {
@@ -54,31 +87,21 @@ Journal_init(Journal *self, PyObject *args, PyObject *keywds)
     int flags=SD_JOURNAL_LOCAL_ONLY;
     char *path=NULL;
 
-    static char *kwlist[] = {"flags", NULL};
-    if (! PyArg_ParseTupleAndKeywords(args, keywds, "|is", kwlist,
+    static char *kwlist[] = {"flags", "path", NULL};
+    if (! PyArg_ParseTupleAndKeywords(args, keywds, "|iz", kwlist,
                                       &flags, &path))
         return 1;
 
     int r;
+    Py_BEGIN_ALLOW_THREADS
     if (path) {
         r = sd_journal_open_directory(&self->j, path, 0);
     }else{
-        Py_BEGIN_ALLOW_THREADS
         r = sd_journal_open(&self->j, flags);
-        Py_END_ALLOW_THREADS
-    }
-    if (r == -EINVAL) {
-        PyErr_SetString(PyExc_ValueError, "Invalid flags or path");
-        return -1;
-    }else if (r == -ENOMEM) {
-        PyErr_SetString(PyExc_MemoryError, "Not enough memory");
-        return 1;
-    }else if (r < 0) {
-        PyErr_SetString(PyExc_RuntimeError, "Error opening journal");
-        return 1;
     }
+    Py_END_ALLOW_THREADS
 
-    return 0;
+    return set_error(r, path, "Invalid flags or path");
 }
 
 PyDoc_STRVAR(Journal_get_next__doc__,
@@ -92,34 +115,29 @@ Journal_get_next(Journal *self, PyObject *args)
     if (! PyArg_ParseTuple(args, "|L", &skip))
         return NULL;
 
-    int r;
+    if (skip == 0LL) {
+        PyErr_SetString(PyExc_ValueError, "Skip number must positive/negative integer");
+        return NULL;
+    }
+
+    int r = -EINVAL;
+    Py_BEGIN_ALLOW_THREADS
     if (skip == 1LL) {
-        Py_BEGIN_ALLOW_THREADS
         r = sd_journal_next(self->j);
-        Py_END_ALLOW_THREADS
     }else if (skip == -1LL) {
-        Py_BEGIN_ALLOW_THREADS
         r = sd_journal_previous(self->j);
-        Py_END_ALLOW_THREADS
     }else if (skip > 1LL) {
-        Py_BEGIN_ALLOW_THREADS
         r = sd_journal_next_skip(self->j, skip);
-        Py_END_ALLOW_THREADS
     }else if (skip < -1LL) {
-        Py_BEGIN_ALLOW_THREADS
         r = sd_journal_previous_skip(self->j, -skip);
-        Py_END_ALLOW_THREADS
-    }else{
-        PyErr_SetString(PyExc_ValueError, "Skip number must positive/negative integer");
-        return NULL;
     }
+    Py_END_ALLOW_THREADS
 
-    if (r < 0) {
-        PyErr_SetString(PyExc_RuntimeError, "Error getting next message");
+    set_error(r, NULL, NULL);
+    if (r < 0)
         return NULL;
-    }else if ( r == 0) { //EOF
+    else if (r == 0) /* EOF */
         return PyDict_New();
-    }
 
     PyObject *dict;
     dict = PyDict_New();
@@ -131,11 +149,7 @@ Journal_get_next(Journal *self, PyObject *args)
 
     SD_JOURNAL_FOREACH_DATA(self->j, msg, msg_len) {
         delim_ptr = memchr(msg, '=', msg_len);
-#if PY_MAJOR_VERSION >=3
-        key = PyUnicode_FromStringAndSize(msg, delim_ptr - (const char*) msg);
-#else
-        key = PyString_FromStringAndSize(msg, delim_ptr - (const char*) msg);
-#endif
+        key = unicode_FromStringAndSize(msg, delim_ptr - (const char*) msg);
         value = PyBytes_FromStringAndSize(delim_ptr + 1, (const char*) msg + msg_len - (delim_ptr + 1) );
         if (PyDict_Contains(dict, key)) {
             cur_value = PyDict_GetItem(dict, key);
@@ -159,12 +173,7 @@ Journal_get_next(Journal *self, PyObject *args)
     if (sd_journal_get_realtime_usec(self->j, &realtime) == 0) {
         char realtime_str[20];
         sprintf(realtime_str, "%llu", (long long unsigned) realtime);
-
-#if PY_MAJOR_VERSION >=3
-        key = PyUnicode_FromString("__REALTIME_TIMESTAMP");
-#else
-        key = PyString_FromString("__REALTIME_TIMESTAMP");
-#endif
+        key = unicode_FromString("__REALTIME_TIMESTAMP");
         value = PyBytes_FromString(realtime_str);
         PyDict_SetItem(dict, key, value);
         Py_DECREF(key);
@@ -176,11 +185,7 @@ Journal_get_next(Journal *self, PyObject *args)
     if (sd_journal_get_monotonic_usec(self->j, &monotonic, &sd_id) == 0) {
         char monotonic_str[20];
         sprintf(monotonic_str, "%llu", (long long unsigned) monotonic);
-#if PY_MAJOR_VERSION >=3
-        key = PyUnicode_FromString("__MONOTONIC_TIMESTAMP");
-#else
-        key = PyString_FromString("__MONOTONIC_TIMESTAMP");
-#endif
+        key = unicode_FromString("__MONOTONIC_TIMESTAMP");
         value = PyBytes_FromString(monotonic_str);
 
         PyDict_SetItem(dict, key, value);
@@ -190,11 +195,7 @@ Journal_get_next(Journal *self, PyObject *args)
 
     char *cursor;
     if (sd_journal_get_cursor(self->j, &cursor) > 0) { //Should return 0...
-#if PY_MAJOR_VERSION >=3
-        key = PyUnicode_FromString("__CURSOR");
-#else
-        key = PyString_FromString("__CURSOR");
-#endif
+        key = unicode_FromString("__CURSOR");
         value = PyBytes_FromString(cursor);
         PyDict_SetItem(dict, key, value);
         free(cursor);
@@ -220,118 +221,24 @@ Journal_get_previous(Journal *self, PyObject *args)
 }
 
 PyDoc_STRVAR(Journal_add_match__doc__,
-"add_match(match, ..., field=value, ...) -> None\n\n"
+"add_match(match) -> None\n\n"
 "Add a match to filter journal log entries. All matches of different\n"
-"field are combined in logical AND, and matches of the same field\n"
+"fields are combined in logical AND, and matches of the same field\n"
 "are automatically combined in logical OR.\n"
-"Matches can be passed as strings \"field=value\", or keyword\n"
-"arguments field=\"value\".");
+"Match is string of form \"field=value\".");
 static PyObject *
 Journal_add_match(Journal *self, PyObject *args, PyObject *keywds)
 {
-    Py_ssize_t arg_match_len;
-    char *arg_match;
-    int i, r;
-    for (i = 0; i < PySequence_Size(args); i++) {
-#if PY_MAJOR_VERSION >=3
-        PyObject *arg;
-        arg = PySequence_Fast_GET_ITEM(args, i);
-        if (PyUnicode_Check(arg)) {
-#if PY_MINOR_VERSION >=3
-            arg_match = PyUnicode_AsUTF8AndSize(arg, &arg_match_len);
-#else
-            PyObject *temp;
-            temp = PyUnicode_AsUTF8String(arg);
-            PyBytes_AsStringAndSize(temp, &arg_match, &arg_match_len);
-            Py_DECREF(temp);
-#endif
-        }else if (PyBytes_Check(arg)) {
-            PyBytes_AsStringAndSize(arg, &arg_match, &arg_match_len);
-        }else{
-            PyErr_SetString(PyExc_TypeError, "expected bytes or string");
-        }
-#else
-        PyString_AsStringAndSize(PySequence_Fast_GET_ITEM(args, i), &arg_match, &arg_match_len);
-#endif
-        if (PyErr_Occurred())
-            return NULL;
-        r = sd_journal_add_match(self->j, arg_match, arg_match_len);
-        if (r == -EINVAL) {
-            PyErr_SetString(PyExc_ValueError, "Invalid match");
-            return NULL;
-        }else if (r == -ENOMEM) {
-            PyErr_SetString(PyExc_MemoryError, "Not enough memory");
-            return NULL;
-        }else if (r < 0) {
-            PyErr_SetString(PyExc_RuntimeError, "Error adding match");
-            return NULL;
-        }
-    }
-
-    if (! keywds)
-        Py_RETURN_NONE;
-
-    PyObject *key, *value;
-    Py_ssize_t pos=0, match_key_len, match_value_len;
+    char *match;
     int match_len;
-    char *match_key, *match_value;
-    void *match;
-    while (PyDict_Next(keywds, &pos, &key, &value)) {
-#if PY_MAJOR_VERSION >=3
-        if (PyUnicode_Check(key)) {
-#if PY_MINOR_VERSION >=3
-            match_key = PyUnicode_AsUTF8AndSize(key, &match_key_len);
-#else
-            PyObject *temp2;
-            temp2 = PyUnicode_AsUTF8String(key);
-            PyBytes_AsStringAndSize(temp2, &match_key, &match_key_len);
-            Py_DECREF(temp2);
-#endif
-        }else if (PyBytes_Check(key)) {
-            PyBytes_AsStringAndSize(key, &match_key, &match_key_len);
-        }else{
-            PyErr_SetString(PyExc_TypeError, "expected bytes or string");
-        }
-        if (PyUnicode_Check(value)) {
-#if PY_MINOR_VERSION >=3
-            match_value = PyUnicode_AsUTF8AndSize(value, &match_value_len);
-#else
-            PyObject *temp3;
-            temp3 = PyUnicode_AsUTF8String(value);
-            PyBytes_AsStringAndSize(temp3, &match_value, &match_value_len);
-            Py_DECREF(temp3);
-#endif
-        }else if (PyBytes_Check(value)) {
-            PyBytes_AsStringAndSize(value, &match_value, &match_value_len);
-        }else{
-            PyErr_SetString(PyExc_TypeError, "expected bytes or string");
-        }
-#else
-        PyString_AsStringAndSize(key, &match_key, &match_key_len);
-        PyString_AsStringAndSize(value, &match_value, &match_value_len);
-#endif
-        if (PyErr_Occurred())
-            return NULL;
-
-        match_len = match_key_len + 1 + match_value_len;
-        match = malloc(match_len);
-        memcpy(match, match_key, match_key_len);
-        memcpy(match + match_key_len, "=", 1);
-        memcpy(match + match_key_len + 1, match_value, match_value_len);
+    if (! PyArg_ParseTuple(args, "s#", &match, &match_len))
+        return NULL;
 
-        r = sd_journal_add_match(self->j, match, match_len);
-        free(match);
-        if (r == -EINVAL) {
-            PyErr_SetString(PyExc_ValueError, "Invalid match");
-            return NULL;
-        }else if (r == -ENOMEM) {
-            PyErr_SetString(PyExc_MemoryError, "Not enough memory");
-            return NULL;
-        }else if (r < 0) {
-            PyErr_SetString(PyExc_RuntimeError, "Error adding match");
+    int r;
+    r = sd_journal_add_match(self->j, match, match_len);
+    set_error(r, NULL, "Invalid match");
+    if (r < 0)
             return NULL;
-        }
-    }
 
     Py_RETURN_NONE;
 }
@@ -345,13 +252,9 @@ Journal_add_disjunction(Journal *self, PyObject *args)
 {
     int r;
     r = sd_journal_add_disjunction(self->j);
-    if (r == -ENOMEM) {
-        PyErr_SetString(PyExc_MemoryError, "Not enough memory");
-        return NULL;
-    }else if (r < 0) {
-        PyErr_SetString(PyExc_RuntimeError, "Error adding disjunction");
+    set_error(r, NULL, NULL);
+    if (r < 0)
         return NULL;
-    }
     Py_RETURN_NONE;
 }
 
@@ -383,77 +286,59 @@ Journal_seek(Journal *self, PyObject *args, PyObject *keywds)
                                       &offset, &whence))
         return NULL;
 
-    PyObject *arg;
+    PyObject *result=NULL;
     if (whence == SEEK_SET){
         int r;
         Py_BEGIN_ALLOW_THREADS
         r = sd_journal_seek_head(self->j);
         Py_END_ALLOW_THREADS
-        if (r < 0) {
-            PyErr_SetString(PyExc_RuntimeError, "Error seeking to head");
+        if (set_error(r, NULL, NULL))
             return NULL;
-        }
+
         if (offset > 0LL) {
-            Py_DECREF(PyObject_CallMethod((PyObject *)self, "get_next", "L", offset));
+            result = PyObject_CallMethod((PyObject *)self, "get_next", "L", offset);
         }
     }else if (whence == SEEK_CUR){
-        Py_DECREF(PyObject_CallMethod((PyObject *)self, "get_next", "L", offset));
+        result = PyObject_CallMethod((PyObject *)self, "get_next", "L", offset);
     }else if (whence == SEEK_END){
         int r;
         Py_BEGIN_ALLOW_THREADS
         r = sd_journal_seek_tail(self->j);
         Py_END_ALLOW_THREADS
-        if (r < 0) {
-            PyErr_SetString(PyExc_RuntimeError, "Error seeking to tail");
+        if (set_error(r, NULL, NULL))
             return NULL;
-        }
-        Py_DECREF(PyObject_CallMethod((PyObject *)self, "get_next", "L", -1LL));
+
         if (offset < 0LL) {
-            Py_DECREF(PyObject_CallMethod((PyObject *)self, "get_next", "L", offset));
+            result = PyObject_CallMethod((PyObject *)self, "get_next", "L", offset);
+        }else{
+            result = PyObject_CallMethod((PyObject *)self, "get_next", "L", -1LL);
         }
     }else{
         PyErr_SetString(PyExc_ValueError, "Invalid value for whence");
-        return NULL;
     }
+
+    Py_XDECREF(result);
+    if (PyErr_Occurred())
+        return NULL;
     Py_RETURN_NONE;
 }
 
 PyDoc_STRVAR(Journal_seek_realtime__doc__,
 "seek_realtime(realtime) -> None\n\n"
 "Seek to nearest matching journal entry to `realtime`. Argument\n"
-"`realtime` can be an integer unix timestamp in usecs or a "
-"datetime instance.");
+"`realtime` can must be an integer unix timestamp.");
 static PyObject *
 Journal_seek_realtime(Journal *self, PyObject *args)
 {
-    PyObject *arg;
-    if (! PyArg_ParseTuple(args, "O", &arg))
+    double timedouble;
+    if (! PyArg_ParseTuple(args, "d", &timedouble))
         return NULL;
 
-    uint64_t timestamp=-1LL;
-    if (PyDateTime_Check(arg)) {
-        PyObject *temp;
-        char *timestamp_str;
-        temp = PyObject_CallMethod(arg, "strftime", "s", "%s%f");
-#if PY_MAJOR_VERSION >=3
-        PyObject *temp2;
-        temp2 = PyUnicode_AsUTF8String(temp);
-        timestamp_str = PyBytes_AsString(temp2);
-        Py_DECREF(temp2);
-#else
-        timestamp_str = PyString_AsString(temp);
-#endif
-        Py_DECREF(temp);
-        timestamp = strtoull(timestamp_str, NULL, 10);
-    }else if (PyLong_Check(arg)) {
-        timestamp = PyLong_AsUnsignedLongLong(arg);
-#if PY_MAJOR_VERSION <3
-    }else if (PyInt_Check(arg)) {
-        timestamp = PyInt_AsUnsignedLongLongMask(arg);
-#endif
-    }
+    uint64_t timestamp;
+    timestamp = (uint64_t) (timedouble * 1.0E6);
+
     if ((int64_t) timestamp < 0LL) {
-        PyErr_SetString(PyExc_ValueError, "Time must be positive integer or datetime instance");
+        PyErr_SetString(PyExc_ValueError, "Time must be positive integer");
         return NULL;
     }
 
@@ -461,47 +346,30 @@ Journal_seek_realtime(Journal *self, PyObject *args)
     Py_BEGIN_ALLOW_THREADS
     r = sd_journal_seek_realtime_usec(self->j, timestamp);
     Py_END_ALLOW_THREADS
-    if (r < 0) {
-        PyErr_SetString(PyExc_RuntimeError, "Error seek to time");
+    if (set_error(r, NULL, NULL))
         return NULL;
-    }
     Py_RETURN_NONE;
 }
 
 PyDoc_STRVAR(Journal_seek_monotonic__doc__,
 "seek_monotonic(monotonic[, bootid]) -> None\n\n"
 "Seek to nearest matching journal entry to `monotonic`. Argument\n"
-"`monotonic` is an timestamp from boot in secs, or a\n"
-"timedelta instance.\n"
+"`monotonic` is an timestamp from boot in seconds.\n"
 "Argument `bootid` is a string representing which boot the\n"
 "monotonic time is reference to. Defaults to current bootid.");
 static PyObject *
 Journal_seek_monotonic(Journal *self, PyObject *args)
 {
-    PyObject *arg;
+    double timedouble;
     char *bootid=NULL;
-    if (! PyArg_ParseTuple(args, "O|s", &arg, &bootid))
+    if (! PyArg_ParseTuple(args, "d|z", &timedouble, &bootid))
         return NULL;
 
-    uint64_t timestamp=-1LL;
-    if PyDelta_Check(arg) {
-        PyObject *temp;
-        temp = PyObject_CallMethod(arg, "total_seconds", NULL);
-        timestamp = (uint64_t) (PyFloat_AsDouble(temp) * 1E6);
-        Py_DECREF(temp);
-    }else if (PyFloat_Check(arg)) {
-        timestamp = (uint64_t) (PyFloat_AsDouble(arg) * 1E6);
-    }else if (PyLong_Check(arg)) {
-        timestamp = PyLong_AsUnsignedLongLong(arg) * (uint64_t) 1E6;
-#if PY_MAJOR_VERSION <3
-    }else if (PyInt_Check(arg)) {
-        timestamp = PyInt_AsUnsignedLongLongMask(arg) * (uint64_t) 1E6;
-#endif
-
-    }
+    uint64_t timestamp;
+    timestamp = (uint64_t) (timedouble * 1.0E6);
 
     if ((int64_t) timestamp < 0LL) {
-        PyErr_SetString(PyExc_ValueError, "Time must be positive number or timedelta instance");
+        PyErr_SetString(PyExc_ValueError, "Time must be positive number");
         return NULL;
     }
 
@@ -509,34 +377,24 @@ Journal_seek_monotonic(Journal *self, PyObject *args)
     int r;
     if (bootid) {
         r = sd_id128_from_string(bootid, &sd_id);
-        if (r == -EINVAL) {
-            PyErr_SetString(PyExc_ValueError, "Invalid bootid");
+        if (set_error(r, NULL, "Invalid bootid"))
             return NULL;
-        } else if (r < 0) {
-            PyErr_SetString(PyExc_RuntimeError, "Error processing bootid");
-            return NULL;
-        }
-    }else{
+    } else {
+        Py_BEGIN_ALLOW_THREADS
         r = sd_id128_get_boot(&sd_id);
-        if (r == -EIO) {
-            PyErr_SetString(PyExc_IOError, "Error getting current boot ID");
-            return NULL;
-        } else if (r < 0) {
-            PyErr_SetString(PyExc_RuntimeError, "Error getting current boot ID");
+        Py_END_ALLOW_THREADS
+        if (set_error(r, NULL, NULL))
             return NULL;
-        }
     }
 
     Py_BEGIN_ALLOW_THREADS
     r = sd_journal_seek_monotonic_usec(self->j, sd_id, timestamp);
     Py_END_ALLOW_THREADS
-    if (r < 0) {
-        PyErr_SetString(PyExc_RuntimeError, "Error seek to time");
+    if (set_error(r, NULL, NULL))
         return NULL;
-    }
     Py_RETURN_NONE;
 }
- 
+
 PyDoc_STRVAR(Journal_wait__doc__,
 "wait([timeout]) -> Change state (integer)\n\n"
 "Waits until there is a change in the journal. Argument `timeout`\n"
@@ -554,20 +412,13 @@ Journal_wait(Journal *self, PyObject *args, PyObject *keywds)
         return NULL;
 
     int r;
-    if ( timeout == 0LL) {
-        Py_BEGIN_ALLOW_THREADS
-        r = sd_journal_wait(self->j, (uint64_t) -1);
-        Py_END_ALLOW_THREADS
-    }else{
-        Py_BEGIN_ALLOW_THREADS
-        r = sd_journal_wait(self->j, timeout * 1E6);
-        Py_END_ALLOW_THREADS
-    }
-#if PY_MAJOR_VERSION >=3
-    return PyLong_FromLong(r);
-#else
-    return PyInt_FromLong(r);
-#endif
+    Py_BEGIN_ALLOW_THREADS
+    r = sd_journal_wait(self->j, timeout ==0 ? (uint64_t) -1 : timeout * 1E6);
+    Py_END_ALLOW_THREADS
+    if (set_error(r, NULL, NULL))
+        return NULL;
+
+    return long_FromLong(r);
 }
 
 PyDoc_STRVAR(Journal_seek_cursor__doc__,
@@ -584,16 +435,8 @@ Journal_seek_cursor(Journal *self, PyObject *args)
     Py_BEGIN_ALLOW_THREADS
     r = sd_journal_seek_cursor(self->j, cursor);
     Py_END_ALLOW_THREADS
-    if (r == -EINVAL) {
-        PyErr_SetString(PyExc_ValueError, "Invalid cursor");
-        return NULL;
-    }else if (r == -ENOMEM) {
-        PyErr_SetString(PyExc_MemoryError, "Not enough memory");
+    if (set_error(r, NULL, "Invalid cursor"))
         return NULL;
-    }else if (r < 0) {
-        PyErr_SetString(PyExc_RuntimeError, "Error seeking to cursor");
-        return NULL;
-    }
     Py_RETURN_NONE;
 }
 
@@ -607,10 +450,12 @@ Journal_iter(PyObject *self)
 static PyObject *
 Journal_iternext(PyObject *self)
 {
-    PyObject *dict, *arg;
+    PyObject *dict;
     Py_ssize_t dict_size;
 
     dict = PyObject_CallMethod(self, "get_next", "");
+    if (PyErr_Occurred())
+        return NULL;
     dict_size = PyDict_Size(dict);
     if ((int64_t) dict_size > 0LL) {
         return dict;
@@ -621,7 +466,6 @@ Journal_iternext(PyObject *self)
     }
 }
 
-#ifdef SD_JOURNAL_FOREACH_UNIQUE
 PyDoc_STRVAR(Journal_query_unique__doc__,
 "query_unique(field) -> a set of values\n\n"
 "Returns a set of unique values in journal for given `field`.\n"
@@ -637,28 +481,15 @@ Journal_query_unique(Journal *self, PyObject *args)
     Py_BEGIN_ALLOW_THREADS
     r = sd_journal_query_unique(self->j, query);
     Py_END_ALLOW_THREADS
-    if (r == -EINVAL) {
-        PyErr_SetString(PyExc_ValueError, "Invalid field name");
-        return NULL;
-    } else if (r == -ENOMEM) {
-        PyErr_SetString(PyExc_MemoryError, "Not enough memory");
-        return NULL;
-    } else if (r < 0) {
-        PyErr_SetString(PyExc_RuntimeError, "Error querying journal");
+    if (set_error(r, NULL, "Invalid field name"))
         return NULL;
-    }
 
     const void *uniq;
     size_t uniq_len;
     const char *delim_ptr;
     PyObject *value_set, *key, *value;
     value_set = PySet_New(0);
-
-#if PY_MAJOR_VERSION >=3
-    key = PyUnicode_FromString(query);
-#else
-    key = PyString_FromString(query);
-#endif
+    key = unicode_FromString(query);
 
     SD_JOURNAL_FOREACH_UNIQUE(self->j, uniq, uniq_len) {
         delim_ptr = memchr(uniq, '=', uniq_len);
@@ -669,71 +500,6 @@ Journal_query_unique(Journal *self, PyObject *args)
     Py_DECREF(key);
     return value_set;
 }
-#endif //def SD_JOURNAL_FOREACH_UNIQUE
-
-PyDoc_STRVAR(Journal_this_boot__doc__,
-"this_boot() -> None\n\n"
-"Sets match filter for the current _BOOT_ID.");
-static PyObject *
-Journal_this_boot(Journal *self, PyObject *args)
-{
-    sd_id128_t sd_id;
-    int r;
-    r = sd_id128_get_boot(&sd_id);
-    if (r == -EIO) {
-        PyErr_SetString(PyExc_IOError, "Error getting current boot ID");
-        return NULL;
-    } else if (r < 0) {
-        PyErr_SetString(PyExc_RuntimeError, "Error getting current boot ID");
-        return NULL;
-    }
-
-    char bootid[33];
-    sd_id128_to_string(sd_id, bootid);
-
-    PyObject *arg, *keywds;
-    arg = PyTuple_New(0);
-    keywds = Py_BuildValue("{s:s}", "_BOOT_ID", bootid);
-    Journal_add_match(self, arg, keywds);
-    Py_DECREF(arg);
-    Py_DECREF(keywds);
-    if (PyErr_Occurred())
-        return NULL;
-
-    Py_RETURN_NONE;
-}
-
-PyDoc_STRVAR(Journal_this_machine__doc__,
-"this_machine() -> None\n\n"
-"Sets match filter for the current _MACHINE_ID.");
-static PyObject *
-Journal_this_machine(Journal *self, PyObject *args)
-{
-    sd_id128_t sd_id;
-    int r;
-    r = sd_id128_get_machine(&sd_id);
-    if (r == -EIO) {
-        PyErr_SetString(PyExc_IOError, "Error getting current boot ID");
-        return NULL;
-    } else if (r < 0) {
-        PyErr_SetString(PyExc_RuntimeError, "Error getting current boot ID");
-        return NULL;
-    }
-
-    char machineid[33];
-    sd_id128_to_string(sd_id, machineid);
-
-    PyObject *arg, *keywds;
-    arg = PyTuple_New(0);
-    keywds = Py_BuildValue("{s:s}", "_MACHINE_ID", machineid);
-    Journal_add_match(self, arg, keywds);
-    Py_DECREF(arg);
-    Py_DECREF(keywds);
-    if (PyErr_Occurred())
-        return NULL;
-
-    Py_RETURN_NONE;
-}
 
 static PyObject *
 Journal_get_data_threshold(Journal *self, void *closure)
@@ -743,17 +509,10 @@ Journal_get_data_threshold(Journal *self, void *closure)
     int r;
 
     r = sd_journal_get_data_threshold(self->j, &cvalue);
-    if (r < 0){
-        PyErr_SetString(PyExc_RuntimeError, "Error getting data threshold");
+    if (set_error(r, NULL, NULL))
         return NULL;
-    }
 
-#if PY_MAJOR_VERSION >=3
-    value = PyLong_FromSize_t(cvalue);
-#else
-    value = PyInt_FromSize_t(cvalue);
-#endif
-    return value;
+    return long_FromSize_t(cvalue);
 }
 
 static int
@@ -763,25 +522,13 @@ Journal_set_data_threshold(Journal *self, PyObject *value, void *closure)
         PyErr_SetString(PyExc_TypeError, "Cannot delete data threshold");
         return -1;
     }
-#if PY_MAJOR_VERSION >=3
-    if (! PyLong_Check(value)){
-#else
-    if (! PyInt_Check(value)){
-#endif
+    if (!long_Check(value)){
         PyErr_SetString(PyExc_TypeError, "Data threshold must be int");
         return -1;
     }
     int r;
-#if PY_MAJOR_VERSION >=3
-    r = sd_journal_set_data_threshold(self->j, (size_t) PyLong_AsLong(value));
-#else
-    r = sd_journal_set_data_threshold(self->j, (size_t) PyInt_AsLong(value));
-#endif
-    if (r < 0){
-        PyErr_SetString(PyExc_RuntimeError, "Error setting data threshold");
-        return -1;
-    }
-    return 0;
+    r = sd_journal_set_data_threshold(self->j, (size_t) long_AsLong(value));
+    return set_error(r, NULL, NULL);
 }
 
 static PyGetSetDef Journal_getseters[] = {
@@ -814,20 +561,14 @@ static PyMethodDef Journal_methods[] = {
     Journal_wait__doc__},
     {"seek_cursor", (PyCFunction)Journal_seek_cursor, METH_VARARGS,
     Journal_seek_cursor__doc__},
-#ifdef SD_JOURNAL_FOREACH_UNIQUE
     {"query_unique", (PyCFunction)Journal_query_unique, METH_VARARGS,
     Journal_query_unique__doc__},
-#endif
-    {"this_boot", (PyCFunction)Journal_this_boot, METH_NOARGS,
-    Journal_this_boot__doc__},
-    {"this_machine", (PyCFunction)Journal_this_machine, METH_NOARGS,
-    Journal_this_machine__doc__},
     {NULL}  /* Sentinel */
 };
 
 static PyTypeObject JournalType = {
     PyVarObject_HEAD_INIT(NULL, 0)
-    "_reader.Journal",           /*tp_name*/
+    "_reader._Journal",               /*tp_name*/
     sizeof(Journal),                  /*tp_basicsize*/
     0,                                /*tp_itemsize*/
     (destructor)Journal_dealloc,      /*tp_dealloc*/