chiark / gitweb /
udev: move global property handling from libudev to udevd
[elogind.git] / src / libudev / libudev.c
index 1a74808411b58c1f5f6dd446994641d991b0758f..c237db5e9652a802c90edeff56fd4a6341a84b8e 100644 (file)
@@ -1,13 +1,21 @@
-/*
- * libudev - interface to udev device information
- *
- * Copyright (C) 2008-2010 Kay Sievers <kay.sievers@vrfy.org>
- *
- * 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 file is part of systemd.
+
+  Copyright 2008-2014 Kay Sievers <kay@vrfy.org>
+
+  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 <stdio.h>
 #include <stdlib.h>
@@ -21,6 +29,7 @@
 
 #include "libudev.h"
 #include "libudev-private.h"
+#include "missing.h"
 
 /**
  * SECTION:libudev
@@ -41,40 +50,18 @@ struct udev {
                        int priority, const char *file, int line, const char *fn,
                        const char *format, va_list args);
         void *userdata;
-        struct udev_list properties_list;
-        int log_priority;
 };
 
-void udev_log(struct udev *udev,
-              int priority, const char *file, int line, const char *fn,
-              const char *format, ...)
-{
-        va_list args;
-
-        va_start(args, format);
-        udev->log_fn(udev, priority, file, line, fn, format, args);
-        va_end(args);
-}
-
-static void log_stderr(struct udev *udev,
-                       int priority, const char *file, int line, const char *fn,
-                       const char *format, va_list args)
-{
-        fprintf(stderr, "libudev: %s: ", fn);
-        vfprintf(stderr, format, args);
-}
-
 /**
  * udev_get_userdata:
  * @udev: udev library context
  *
  * Retrieve stored data pointer from library context. This might be useful
- * to access from callbacks like a custom logging function.
+ * to access from callbacks.
  *
  * Returns: stored userdata
  **/
-_public_ void *udev_get_userdata(struct udev *udev)
-{
+_public_ void *udev_get_userdata(struct udev *udev) {
         if (udev == NULL)
                 return NULL;
         return udev->userdata;
@@ -87,8 +74,7 @@ _public_ void *udev_get_userdata(struct udev *udev)
  *
  * Store custom @userdata in the library context.
  **/
-_public_ void udev_set_userdata(struct udev *udev, void *userdata)
-{
+_public_ void udev_set_userdata(struct udev *udev, void *userdata) {
         if (udev == NULL)
                 return;
         udev->userdata = userdata;
@@ -105,24 +91,19 @@ _public_ void udev_set_userdata(struct udev *udev, void *userdata)
  *
  * Returns: a new udev library context
  **/
-_public_ struct udev *udev_new(void)
-{
+_public_ struct udev *udev_new(void) {
         struct udev *udev;
-        const char *env;
-        FILE *f;
+        _cleanup_fclose_ FILE *f = NULL;
 
-        udev = calloc(1, sizeof(struct udev));
+        udev = new0(struct udev, 1);
         if (udev == NULL)
                 return NULL;
         udev->refcount = 1;
-        udev->log_fn = log_stderr;
-        udev->log_priority = LOG_ERR;
-        udev_list_init(udev, &udev->properties_list, true);
 
-        f = fopen(SYSCONFDIR "/udev/udev.conf", "re");
+        f = fopen("/etc/udev/udev.conf", "re");
         if (f != NULL) {
                 char line[UTIL_LINE_SIZE];
-                int line_nr = 0;
+                unsigned line_nr = 0;
 
                 while (fgets(line, sizeof(line), f)) {
                         size_t len;
@@ -143,7 +124,7 @@ _public_ struct udev *udev_new(void)
                         /* split key/value */
                         val = strchr(key, '=');
                         if (val == NULL) {
-                                udev_err(udev, "missing <key>=<value> in " SYSCONFDIR "/udev/udev.conf[%i]; skip line\n", line_nr);
+                                log_debug("/etc/udev/udev.conf:%u: missing assignment,  skipping line.\n", line_nr);
                                 continue;
                         }
                         val[0] = '\0';
@@ -175,26 +156,26 @@ _public_ struct udev *udev_new(void)
                         /* unquote */
                         if (val[0] == '"' || val[0] == '\'') {
                                 if (val[len-1] != val[0]) {
-                                        udev_err(udev, "inconsistent quoting in " SYSCONFDIR "/udev/udev.conf[%i]; skip line\n", line_nr);
+                                        log_debug("/etc/udev/udev.conf:%u: inconsistent quoting, skipping line.\n", line_nr);
                                         continue;
                                 }
                                 val[len-1] = '\0';
                                 val++;
                         }
 
-                        if (strcmp(key, "udev_log") == 0) {
-                                udev_set_log_priority(udev, util_log_priority(val));
+                        if (streq(key, "udev_log")) {
+                                int prio;
+
+                                prio = util_log_priority(val);
+                                if (prio < 0)
+                                        log_debug("/etc/udev/udev.conf:%u: invalid log level '%s', ignoring.\n", line_nr, val);
+                                else
+                                        log_set_max_level(prio);
                                 continue;
                         }
                 }
-                fclose(f);
         }
 
-        /* environment overrides config */
-        env = __secure_getenv("UDEV_LOG");
-        if (env != NULL)
-                udev_set_log_priority(udev, util_log_priority(env));
-
         return udev;
 }
 
@@ -206,8 +187,7 @@ _public_ struct udev *udev_new(void)
  *
  * Returns: the passed udev library context
  **/
-_public_ struct udev *udev_ref(struct udev *udev)
-{
+_public_ struct udev *udev_ref(struct udev *udev) {
         if (udev == NULL)
                 return NULL;
         udev->refcount++;
@@ -223,14 +203,12 @@ _public_ struct udev *udev_ref(struct udev *udev)
  *
  * Returns: the passed udev library context if it has still an active reference, or #NULL otherwise.
  **/
-_public_ struct udev *udev_unref(struct udev *udev)
-{
+_public_ struct udev *udev_unref(struct udev *udev) {
         if (udev == NULL)
                 return NULL;
         udev->refcount--;
         if (udev->refcount > 0)
                 return udev;
-        udev_list_cleanup(&udev->properties_list);
         free(udev);
         return NULL;
 }
@@ -238,68 +216,37 @@ _public_ struct udev *udev_unref(struct udev *udev)
 /**
  * udev_set_log_fn:
  * @udev: udev library context
- * @log_fn: function to be called for logging messages
+ * @log_fn: function to be called for log messages
  *
- * The built-in logging writes to stderr. It can be
- * overridden by a custom function, to plug log messages
- * into the users' logging functionality.
+ * This function is deprecated.
  *
  **/
 _public_ void udev_set_log_fn(struct udev *udev,
                      void (*log_fn)(struct udev *udev,
                                     int priority, const char *file, int line, const char *fn,
-                                    const char *format, va_list args))
-{
-        udev->log_fn = log_fn;
-        udev_dbg(udev, "custom logging function %p registered\n", log_fn);
+                                    const char *format, va_list args)) {
+        return;
 }
 
 /**
  * udev_get_log_priority:
  * @udev: udev library context
  *
- * The initial logging priority is read from the udev config file
- * at startup.
+ * This function is deprecated.
  *
- * Returns: the current logging priority
  **/
-_public_ int udev_get_log_priority(struct udev *udev)
-{
-        return udev->log_priority;
+_public_ int udev_get_log_priority(struct udev *udev) {
+        return log_get_max_level();
 }
 
 /**
  * udev_set_log_priority:
  * @udev: udev library context
- * @priority: the new logging priority
+ * @priority: the new log priority
+ *
+ * This function is deprecated.
  *
- * Set the current logging priority. The value controls which messages
- * are logged.
  **/
-_public_ void udev_set_log_priority(struct udev *udev, int priority)
-{
-        char num[32];
-
-        udev->log_priority = priority;
-        snprintf(num, sizeof(num), "%u", udev->log_priority);
-        udev_add_property(udev, "UDEV_LOG", num);
-}
-
-struct udev_list_entry *udev_add_property(struct udev *udev, const char *key, const char *value)
-{
-        if (value == NULL) {
-                struct udev_list_entry *list_entry;
-
-                list_entry = udev_get_properties_list_entry(udev);
-                list_entry = udev_list_entry_get_by_name(list_entry, key);
-                if (list_entry != NULL)
-                        udev_list_entry_delete(list_entry);
-                return NULL;
-        }
-        return udev_list_entry_add(&udev->properties_list, key, value);
-}
-
-struct udev_list_entry *udev_get_properties_list_entry(struct udev *udev)
-{
-        return udev_list_get_entry(&udev->properties_list);
+_public_ void udev_set_log_priority(struct udev *udev, int priority) {
+        log_set_max_level(priority);
 }