/*
* udev_config.c
*
- * Userspace devfs
- *
- * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
- *
+ * 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_libc_wrapper.h"
#include "udev.h"
+#include "udev_utils.h"
#include "udev_version.h"
#include "logging.h"
-#include "namedev.h"
-#include "libsysfs/libsysfs.h"
/* global variables */
-char sysfs_path[SYSFS_PATH_MAX];
-char udev_root[PATH_MAX];
-char udev_db_filename[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[NAME_MAX];
-char default_owner_str[OWNER_SIZE];
-char default_group_str[GROUP_SIZE];
-
-
-static void init_variables(void)
+char sysfs_path[PATH_SIZE];
+char udev_root[PATH_SIZE];
+char udev_db_path[PATH_SIZE];
+char udev_config_filename[PATH_SIZE];
+char udev_rules_filename[PATH_SIZE];
+int udev_log_priority;
+int udev_run;
+
+static int get_key(char **line, char **key, char **value)
{
- /* fill up the defaults.
- * If any config values are specified, they will
- * override these values. */
- strfieldcpy(udev_root, UDEV_ROOT);
- strfieldcpy(udev_db_filename, UDEV_DB);
- strfieldcpy(udev_config_filename, UDEV_CONFIG_FILE);
- strfieldcpy(udev_rules_filename, UDEV_RULES_FILE);
- strfieldcpy(udev_permissions_filename, UDEV_PERMISSION_FILE);
-}
+ char *linepos;
+ char *temp;
+
+ linepos = *line;
+ if (!linepos)
+ return -1;
-#define set_var(_name, _var) \
- if (strcasecmp(variable, _name) == 0) { \
- dbg_parse("%s = '%s'", _name, value); \
- strncpy(_var, value, sizeof(_var)); \
+ /* 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;
}
+ /* terminate key */
+ linepos[0] = '\0';
+ linepos++;
+
+ /* skip whitespace */
+ while (isspace(linepos[0]))
+ linepos++;
+
+ /* get the value*/
+ if (linepos[0] == '"')
+ linepos++;
+ else
+ return -1;
+ *value = linepos;
+
+ temp = strchr(linepos, '"');
+ if (!temp)
+ return -1;
+ temp[0] = '\0';
+
+ return 0;
+}
+
static int parse_config_file(void)
{
- char line[255];
- char *temp;
+ char line[LINE_SIZE];
+ char *bufline;
+ char *linepos;
char *variable;
char *value;
- FILE *fd;
- int lineno = 0;
+ char *buf;
+ size_t bufsize;
+ size_t cur;
+ size_t count;
+ int lineno;
int retval = 0;
-
- fd = fopen(udev_config_filename, "r");
- if (fd != NULL) {
- 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", udev_config_filename);
return -ENODEV;
}
/* loop through the whole file */
- while (1) {
- /* get a line */
- temp = fgets(line, sizeof(line), fd);
- if (temp == NULL)
- goto exit;
+ lineno = 0;
+ cur = 0;
+ while (cur < bufsize) {
+ count = buf_get_line(buf, bufsize, cur);
+ bufline = &buf[cur];
+ cur += count+1;
lineno++;
- dbg_parse("read '%s'", temp);
+ if (count >= sizeof(line)) {
+ err("line too long, conf line skipped %s, line %d", udev_config_filename, lineno);
+ continue;
+ }
+
+ /* eat the whitespace */
+ while ((count > 0) && isspace(bufline[0])) {
+ bufline++;
+ count--;
+ }
+ if (count == 0)
+ continue;
- /* eat the whitespace at the beginning of the line */
- while (isspace(*temp))
- ++temp;
+ /* see if this is a comment */
+ if (bufline[0] == COMMENT_CHARACTER)
+ continue;
+
+ memcpy(line, bufline, count);
+ line[count] = '\0';
- /* empty line? */
- if (*temp == 0x00)
+ 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;
+ }
- /* see if this is a comment */
- if (*temp == COMMENT_CHARACTER)
+ if (strcasecmp(variable, "udev_root") == 0) {
+ strlcpy(udev_root, value, sizeof(udev_root));
+ remove_trailing_chars(udev_root, '/');
continue;
+ }
- retval = get_pair(&temp, &variable, &value);
- if (retval)
- break;
-
- dbg_parse("variable = '%s', value = '%s'", variable, value);
-
- set_var("udev_root", udev_root);
- set_var("udev_db", udev_db_filename);
- set_var("udev_rules", udev_rules_filename);
- set_var("udev_permissions", udev_permissions_filename);
- set_var("default_mode", default_mode_str);
- set_var("default_owner", default_owner_str);
- set_var("default_group", default_group_str);
+ if (strcasecmp(variable, "udev_db") == 0) {
+ strlcpy(udev_db_path, value, sizeof(udev_db_path));
+ remove_trailing_chars(udev_db_path, '/');
+ continue;
+ }
+
+ if (strcasecmp(variable, "udev_rules") == 0) {
+ strlcpy(udev_rules_filename, value, sizeof(udev_rules_filename));
+ remove_trailing_chars(udev_rules_filename, '/');
+ continue;
+ }
+
+ if (strcasecmp(variable, "udev_log") == 0) {
+ udev_log_priority = log_priority(value);
+ continue;
+ }
}
- dbg_parse("%s:%d:%Zd: error parsing '%s'", udev_config_filename,
- lineno, temp - line, temp);
-exit:
- fclose(fd);
+
+ file_unmap(buf, bufsize);
return retval;
}
-static void get_dirs(void)
+void udev_init_config(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 */
- temp = getenv("UDEV_TEST");
- if (temp != NULL) {
- /* hm testing is happening, use the specified values, if they are present */
- temp = getenv("SYSFS_PATH");
- if (temp)
- strfieldcpy(sysfs_path, temp);
- temp = getenv("UDEV_CONFIG_FILE");
- if (temp)
- strfieldcpy(udev_config_filename, temp);
+ const char *env;
+
+ strcpy(udev_root, UDEV_ROOT);
+ strcpy(udev_db_path, UDEV_DB);
+ strcpy(udev_config_filename, UDEV_CONFIG_FILE);
+ strcpy(udev_rules_filename, UDEV_RULES_FILE);
+ udev_log_priority = LOG_ERR;
+ udev_run = 1;
+ sysfs_get_mnt_path(sysfs_path, sizeof(sysfs_path));
+
+ /* 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_filename = %s", udev_db_filename);
- dbg_parse("udev_rules_filename = %s", udev_rules_filename);
- dbg_parse("udev_permissions_filename = %s", udev_permissions_filename);
parse_config_file();
- dbg_parse("udev_root = %s", udev_root);
- dbg_parse("udev_config_filename = %s", udev_config_filename);
- dbg_parse("udev_db_filename = %s", udev_db_filename);
- dbg_parse("udev_rules_filename = %s", udev_rules_filename);
- dbg_parse("udev_permissions_filename = %s", udev_permissions_filename);
-}
+ env = getenv("UDEV_LOG");
+ if (env)
+ udev_log_priority = log_priority(env);
-void udev_init_config(void)
-{
- init_variables();
- get_dirs();
+ dbg("sysfs_path='%s'", sysfs_path);
+ dbg("UDEV_CONFIG_FILE='%s'", udev_config_filename);
+ dbg("udev_root='%s'", udev_root);
+ dbg("udev_db='%s'", udev_db_path);
+ dbg("udev_rules='%s'", udev_rules_filename);
+ dbg("udev_log=%d", udev_log_priority);
}
-
-
~ianmdlvl / elogind.git / blobdiff