/*
* udev_config.c
*
- * Userspace devfs
- *
* Copyright (C) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
- *
+ * Copyright (C) 2004, 2005 Kay Sievers <kay.sievers@vrfy.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
*
*/
-/* define this to enable parsing debugging */
-/* #define DEBUG_PARSER */
-
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <ctype.h>
+#include <syslog.h>
-#include "libsysfs/sysfs/libsysfs.h"
#include "udev.h"
-#include "udev_lib.h"
-#include "udev_version.h"
-#include "logging.h"
-#include "namedev.h"
/* global variables */
-char sysfs_path[SYSFS_PATH_MAX];
-char udev_root[PATH_MAX];
-char udev_db_path[PATH_MAX+NAME_MAX];
-char udev_permissions_filename[PATH_MAX+NAME_MAX];
-char udev_rules_filename[PATH_MAX+NAME_MAX];
-char udev_config_filename[PATH_MAX+NAME_MAX];
-char default_mode_str[MODE_SIZE];
-char default_owner_str[OWNER_SIZE];
-char default_group_str[GROUP_SIZE];
-int udev_log;
-int udev_dev_d;
-
-
-static int string_is_true(char *str)
-{
- if (strcasecmp(str, "true") == 0)
- return 1;
- if (strcasecmp(str, "yes") == 0)
- return 1;
- if (strcasecmp(str, "1") == 0)
- return 1;
- return 0;
-}
+char udev_root[PATH_SIZE];
+char udev_config_filename[PATH_SIZE];
+char udev_rules_filename[PATH_SIZE];
+int udev_log_priority;
+int udev_run;
-static void init_variables(void)
-{
- char *env;
-
- /* fill up the defaults.
- * If any config values are specified, they will
- * override these values. */
- strfieldcpy(udev_root, UDEV_ROOT);
- strfieldcpy(udev_db_path, UDEV_DB);
- strfieldcpy(udev_config_filename, UDEV_CONFIG_FILE);
- strfieldcpy(udev_rules_filename, UDEV_RULES_FILE);
- strfieldcpy(udev_permissions_filename, UDEV_PERMISSION_FILE);
- udev_log = string_is_true(UDEV_LOG_DEFAULT);
-
- udev_dev_d = 1;
- env = getenv("UDEV_NO_DEVD");
- if (env && string_is_true(env))
- udev_dev_d = 0;
-}
-
-int parse_get_pair(char **orig_string, char **left, char **right)
+static int get_key(char **line, char **key, char **value)
{
+ char *linepos;
char *temp;
- char *string = *orig_string;
- if (!string)
- return -ENODEV;
+ linepos = *line;
+ if (!linepos)
+ return -1;
+
+ /* skip whitespace */
+ while (isspace(linepos[0]))
+ linepos++;
+
+ /* get the key */
+ *key = linepos;
+ while (1) {
+ linepos++;
+ if (linepos[0] == '\0')
+ return -1;
+ if (isspace(linepos[0]))
+ break;
+ if (linepos[0] == '=')
+ break;
+ }
- /* eat any whitespace */
- while (isspace(*string) || *string == ',')
- ++string;
+ /* terminate key */
+ linepos[0] = '\0';
+ linepos++;
- /* split based on '=' */
- temp = strsep(&string, "=");
- *left = temp;
- if (!string)
- return -ENODEV;
+ /* skip whitespace */
+ while (isspace(linepos[0]))
+ linepos++;
- /* take the right side and strip off the '"' */
- while (isspace(*string))
- ++string;
- if (*string == '"')
- ++string;
+ /* get the value*/
+ if (linepos[0] == '"')
+ linepos++;
else
- return -ENODEV;
+ return -1;
+ *value = linepos;
+
+ temp = strchr(linepos, '"');
+ if (!temp)
+ return -1;
+ temp[0] = '\0';
- temp = strsep(&string, "\"");
- if (!string || *temp == '\0')
- return -ENODEV;
- *right = temp;
- *orig_string = string;
-
return 0;
}
{
char line[LINE_SIZE];
char *bufline;
- char *temp;
+ char *linepos;
char *variable;
char *value;
char *buf;
int lineno;
int retval = 0;
- if (file_map(udev_config_filename, &buf, &bufsize) == 0) {
- dbg("reading '%s' as config file", udev_config_filename);
- } else {
- dbg("can't open '%s' as config file", udev_config_filename);
+ if (file_map(udev_config_filename, &buf, &bufsize) != 0) {
+ err("can't open '%s' as config file: %s", udev_config_filename, strerror(errno));
return -ENODEV;
}
cur += count+1;
lineno++;
- if (count >= LINE_SIZE) {
- info("line too long, conf line skipped %s, line %d",
- udev_config_filename, lineno);
+ if (count >= sizeof(line)) {
+ err("line too long, conf line skipped %s, line %d", udev_config_filename, lineno);
continue;
}
if (bufline[0] == COMMENT_CHARACTER)
continue;
- strncpy(line, bufline, count);
+ memcpy(line, bufline, count);
line[count] = '\0';
- temp = line;
- dbg_parse("read '%s'", temp);
- retval = parse_get_pair(&temp, &variable, &value);
- if (retval != 0)
- info("%s:%d:%Zd: error parsing '%s'",
- udev_config_filename, lineno, temp-line, temp);
-
- dbg_parse("variable='%s', value='%s'", variable, value);
-
- if (strcasecmp(variable, "udev_root") == 0) {
- strfieldcpy(udev_root, value);
- no_trailing_slash(udev_root);
+ linepos = line;
+ retval = get_key(&linepos, &variable, &value);
+ if (retval != 0) {
+ err("error parsing %s, line %d:%d", udev_config_filename, lineno, (int)(linepos-line));
continue;
}
- if (strcasecmp(variable, "udev_db") == 0) {
- strfieldcpy(udev_db_path, value);
- no_trailing_slash(udev_db_path);
+ if (strcasecmp(variable, "udev_root") == 0) {
+ strlcpy(udev_root, value, sizeof(udev_root));
+ remove_trailing_chars(udev_root, '/');
continue;
}
if (strcasecmp(variable, "udev_rules") == 0) {
- strfieldcpy(udev_rules_filename, value);
- no_trailing_slash(udev_rules_filename);
- continue;
- }
-
- if (strcasecmp(variable, "udev_permissions") == 0) {
- strfieldcpy(udev_permissions_filename, value);
- no_trailing_slash(udev_permissions_filename);
- continue;
- }
-
- if (strcasecmp(variable, "default_mode") == 0) {
- strfieldcpy(default_mode_str, value);
- continue;
- }
-
- if (strcasecmp(variable, "default_owner") == 0) {
- strfieldcpy(default_owner_str, value);
- continue;
- }
-
- if (strcasecmp(variable, "default_group") == 0) {
- strfieldcpy(default_group_str, value);
+ strlcpy(udev_rules_filename, value, sizeof(udev_rules_filename));
+ remove_trailing_chars(udev_rules_filename, '/');
continue;
}
if (strcasecmp(variable, "udev_log") == 0) {
- udev_log = string_is_true(value);
+ udev_log_priority = log_priority(value);
continue;
}
-
- info("%s:%d:%Zd: unknown key '%s'",
- udev_config_filename, lineno, temp-line, temp);
}
file_unmap(buf, bufsize);
return retval;
}
-static void get_dirs(void)
+void udev_config_init(void)
{
- char *temp;
- int retval;
-
- retval = sysfs_get_mnt_path(sysfs_path, SYSFS_PATH_MAX);
- if (retval)
- dbg("sysfs_get_mnt_path failed");
-
- /* see if we should try to override any of the default values */
- if (getenv("UDEV_TEST") != NULL) {
- temp = getenv("SYSFS_PATH");
- if (temp != NULL) {
- strfieldcpy(sysfs_path, temp);
- no_trailing_slash(sysfs_path);
- }
-
- temp = getenv("UDEV_CONFIG_FILE");
- if (temp != NULL)
- strfieldcpy(udev_config_filename, temp);
+ const char *env;
+
+ strcpy(udev_root, UDEV_ROOT);
+ strcpy(udev_config_filename, UDEV_CONFIG_FILE);
+ strcpy(udev_rules_filename, UDEV_RULES_FILE);
+ udev_log_priority = LOG_ERR;
+ udev_run = 1;
+
+ /* disable RUN key execution */
+ env = getenv("UDEV_RUN");
+ if (env && !string_is_true(env))
+ udev_run = 0;
+
+ env = getenv("UDEV_CONFIG_FILE");
+ if (env) {
+ strlcpy(udev_config_filename, env, sizeof(udev_config_filename));
+ remove_trailing_chars(udev_config_filename, '/');
}
- dbg("sysfs_path='%s'", sysfs_path);
- dbg_parse("udev_root = %s", udev_root);
- dbg_parse("udev_config_filename = %s", udev_config_filename);
- dbg_parse("udev_db_path = %s", udev_db_path);
- dbg_parse("udev_rules_filename = %s", udev_rules_filename);
- dbg_parse("udev_permissions_filename = %s", udev_permissions_filename);
- dbg_parse("udev_log = %d", udev_log);
-
parse_config_file();
- dbg("udev_root = %s", udev_root);
- dbg("udev_config_filename = %s", udev_config_filename);
- dbg("udev_db_path = %s", udev_db_path);
- dbg("udev_rules_filename = %s", udev_rules_filename);
- dbg("udev_permissions_filename = %s", udev_permissions_filename);
- dbg("udev_log_str = %d", udev_log);
-}
+ env = getenv("UDEV_ROOT");
+ if (env) {
+ strlcpy(udev_root, env, sizeof(udev_root));
+ remove_trailing_chars(udev_root, '/');
+ }
-void udev_init_config(void)
-{
- init_variables();
- get_dirs();
+ env = getenv("UDEV_LOG");
+ if (env)
+ udev_log_priority = log_priority(env);
+
+ dbg("UDEV_CONFIG_FILE='%s'", udev_config_filename);
+ dbg("udev_root='%s'", udev_root);
+ dbg("udev_rules='%s'", udev_rules_filename);
+ dbg("udev_log=%d", udev_log_priority);
}
~ianmdlvl / elogind.git / blobdiff