2003-12-03 12:08:46 +03:00
/*
* udev_config . c
*
* Userspace devfs
*
2004-01-27 06:21:58 +03:00
* Copyright ( C ) 2003 , 2004 Greg Kroah - Hartman < greg @ kroah . com >
2003-12-03 12:08:46 +03:00
*
*
* 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
* Free Software Foundation version 2 of the License .
*
* This program 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
* General Public License for more details .
*
* You should have received a copy of the GNU General Public License along
* with this program ; if not , write to the Free Software Foundation , Inc . ,
* 675 Mass Ave , Cambridge , MA 0213 9 , USA .
*
*/
/* define this to enable parsing debugging */
/* #define DEBUG_PARSER */
# include <stdlib.h>
# include <string.h>
# include <stdio.h>
# include <fcntl.h>
# include <unistd.h>
# include <errno.h>
# include <ctype.h>
# include "udev.h"
# include "udev_version.h"
[PATCH] add udev logging to info log
On Thu, Jan 15, 2004 at 05:14:16AM +0100, Kay Sievers wrote:
> On Wed, Jan 14, 2004 at 01:10:43PM -0800, Greg KH wrote:
> > On Wed, Jan 14, 2004 at 02:34:26PM -0600, Clay Haapala wrote:
> > > On Wed, 14 Jan 2004, Chris Friesen spake thusly:
> > > >
> > > > Maybe for ones with a matching rule, you could print something like:
> > > >
> > > >
> > > Is the act of printing/syslogging a rule in an of itself?
> >
> > No, as currently the only way stuff ends up in the syslog is if
> > DEBUG=true is used on the build line.
> >
> > But it's sounding like we might want to change that... :)
>
> How about this in the syslog after connect/disconnect?
>
> Jan 15 05:07:45 pim udev[28007]: configured rule in '/etc/udev/udev.rules' at line 17 applied, 'video*' becomes 'video/webcam%n'
> Jan 15 05:07:45 pim udev[28007]: creating device node '/udev/video/webcam0'
> Jan 15 05:07:47 pim udev[28015]: removing device node '/udev/video/webcam0'
Here is a slightly better version. I've created a logging.h file and
moved the debug macros from udev.h in there.
If you type:
'make' - you will get a binary that prints one or two lines to syslog
if a device node is created or deleted
'make LOG=false' - you get a binary that prints asolutely nothing
'make DEBUG=true' - the same as today, it will print all debug lines
2004-01-16 08:53:20 +03:00
# include "logging.h"
2003-12-03 12:08:46 +03:00
# 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 ] ;
2003-12-03 19:13:11 +03:00
char udev_permissions_filename [ PATH_MAX + NAME_MAX ] ;
2003-12-03 12:08:46 +03:00
char udev_rules_filename [ PATH_MAX + NAME_MAX ] ;
char udev_config_filename [ PATH_MAX + NAME_MAX ] ;
2004-01-20 06:44:24 +03:00
char default_mode_str [ MODE_SIZE ] ;
2004-01-20 06:42:42 +03:00
char default_owner_str [ OWNER_SIZE ] ;
char default_group_str [ GROUP_SIZE ] ;
2003-12-03 12:08:46 +03:00
static void init_variables ( void )
{
2003-12-03 19:13:11 +03:00
/* fill up the defaults.
* If any config values are specified , they will
* override these values . */
2003-12-03 12:08:46 +03:00
strfieldcpy ( udev_root , UDEV_ROOT ) ;
2003-12-03 19:13:11 +03:00
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 ) ;
2003-12-03 12:08:46 +03:00
}
# define set_var(_name, _var) \
if ( strcasecmp ( variable , _name ) = = 0 ) { \
dbg_parse ( " %s = '%s' " , _name , value ) ; \
strncpy ( _var , value , sizeof ( _var ) ) ; \
}
2004-01-27 06:21:58 +03:00
int parse_get_pair ( char * * orig_string , char * * left , char * * right )
{
char * temp ;
char * string = * orig_string ;
if ( ! string )
return - ENODEV ;
/* eat any whitespace */
while ( isspace ( * string ) | | * string = = ' , ' )
+ + string ;
/* split based on '=' */
temp = strsep ( & string , " = " ) ;
* left = temp ;
if ( ! string )
return - ENODEV ;
/* take the right side and strip off the '"' */
while ( isspace ( * string ) )
+ + string ;
if ( * string = = ' " ' )
+ + string ;
else
return - ENODEV ;
temp = strsep ( & string , " \" " ) ;
if ( ! string | | * temp = = ' \0 ' )
return - ENODEV ;
* right = temp ;
* orig_string = string ;
return 0 ;
}
2003-12-03 12:08:46 +03:00
static int parse_config_file ( void )
{
char line [ 255 ] ;
char * temp ;
char * variable ;
char * value ;
FILE * fd ;
int lineno = 0 ;
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 ) ;
return - ENODEV ;
}
/* loop through the whole file */
while ( 1 ) {
/* get a line */
temp = fgets ( line , sizeof ( line ) , fd ) ;
if ( temp = = NULL )
goto exit ;
lineno + + ;
dbg_parse ( " read '%s' " , temp ) ;
/* eat the whitespace at the beginning of the line */
while ( isspace ( * temp ) )
+ + temp ;
/* empty line? */
if ( * temp = = 0x00 )
continue ;
/* see if this is a comment */
if ( * temp = = COMMENT_CHARACTER )
continue ;
2004-01-27 06:21:58 +03:00
retval = parse_get_pair ( & temp , & variable , & value ) ;
2003-12-03 12:08:46 +03:00
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 ) ;
2003-12-03 19:13:11 +03:00
set_var ( " udev_permissions " , udev_permissions_filename ) ;
2003-12-03 12:08:46 +03:00
set_var ( " default_mode " , default_mode_str ) ;
2004-01-20 06:42:42 +03:00
set_var ( " default_owner " , default_owner_str ) ;
set_var ( " default_group " , default_group_str ) ;
2003-12-03 12:08:46 +03:00
}
dbg_parse ( " %s:%d:%Zd: error parsing '%s' " , udev_config_filename ,
lineno , temp - line , temp ) ;
exit :
fclose ( fd ) ;
return retval ;
}
static void get_dirs ( 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 )
2003-12-03 19:13:11 +03:00
strfieldcpy ( udev_config_filename , temp ) ;
2003-12-03 12:08:46 +03:00
}
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 ) ;
2003-12-03 19:13:11 +03:00
dbg_parse ( " udev_permissions_filename = %s " , udev_permissions_filename ) ;
2003-12-03 12:08:46 +03:00
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 ) ;
2003-12-03 19:13:11 +03:00
dbg_parse ( " udev_permissions_filename = %s " , udev_permissions_filename ) ;
2003-12-03 12:08:46 +03:00
}
void udev_init_config ( void )
{
init_variables ( ) ;
get_dirs ( ) ;
}