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/*
* udev_config . c
*
* Userspace devfs
*
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* Copyright ( C ) 2003 , 2004 Greg Kroah - Hartman < greg @ kroah . com >
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*
*
* 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>
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# include "libsysfs/sysfs/libsysfs.h"
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# include "udev.h"
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# include "udev_utils.h"
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# 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
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# include "logging.h"
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# include "namedev.h"
/* global variables */
char sysfs_path [ SYSFS_PATH_MAX ] ;
char udev_root [ PATH_MAX ] ;
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char udev_db_path [ PATH_MAX + NAME_MAX ] ;
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char udev_permissions_filename [ PATH_MAX + NAME_MAX ] ;
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char udev_rules_filename [ PATH_MAX + NAME_MAX ] ;
char udev_config_filename [ PATH_MAX + NAME_MAX ] ;
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char default_mode_str [ MODE_SIZE ] ;
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char default_owner_str [ OWNER_SIZE ] ;
char default_group_str [ GROUP_SIZE ] ;
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int udev_log ;
[PATCH] netdev - udevdb+dev.d changes
Here is a patch to change the netdev handling in the database and for
the dev.d/ calls. I applies on top of the udevd.patch, cause klibc has
no sysinfo().
o netdev's are also put into our database now. I want this for the
udevruler gui to get a list of all handled devices.
All devices in the db are stamped with the system uptime value at
the creation time. 'udevinfo -d' prints it.
o the DEVPATH value is the key for udevdb, but if we rename
a netdev, the name is replaced in the kernel, so we add
the changed name to the db to match with the remove event.
NOTE: The dev.d/ scripts still get the original name from the
hotplug call. Should we replace DEVPATH with the new name too?
o We now only add a device to the db, if we have successfully created
the main node or successfully renamed a netdev. This is the main part
of the patch, cause I needed to clean the retval passing trough all
the functions used for node creation.
o DEVNODE sounds a bit ugly for netdev's so I exported DEVNAME too.
Can we change the name?
o I've added a UDEV_NO_DEVD to possibly skip the script execution
and used it in udev-test.pl.
udevstart is the same horror now, if you have scripts with logging
statements in dev.d/ it takes minutes to finish, can we skip the
scripts here too?
o The get_device_type() function is changed to be more strict, cause
'udevinfo -a -p /block/' gets a class device for it and tries to
print the major/minor values.
o bugfix, the RESULT value has now a working newline removal and a test
for this case.
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int udev_dev_d ;
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static int string_is_true ( char * str )
{
if ( strcasecmp ( str , " true " ) = = 0 )
return 1 ;
if ( strcasecmp ( str , " yes " ) = = 0 )
return 1 ;
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if ( strcasecmp ( str , " 1 " ) = = 0 )
return 1 ;
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return 0 ;
}
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static void init_variables ( void )
{
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char * env ;
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/* fill up the defaults.
* If any config values are specified , they will
* override these values . */
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strfieldcpy ( udev_root , UDEV_ROOT ) ;
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strfieldcpy ( udev_db_path , UDEV_DB ) ;
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strfieldcpy ( udev_config_filename , UDEV_CONFIG_FILE ) ;
strfieldcpy ( udev_rules_filename , UDEV_RULES_FILE ) ;
strfieldcpy ( udev_permissions_filename , UDEV_PERMISSION_FILE ) ;
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udev_log = string_is_true ( UDEV_LOG_DEFAULT ) ;
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[PATCH] netdev - udevdb+dev.d changes
Here is a patch to change the netdev handling in the database and for
the dev.d/ calls. I applies on top of the udevd.patch, cause klibc has
no sysinfo().
o netdev's are also put into our database now. I want this for the
udevruler gui to get a list of all handled devices.
All devices in the db are stamped with the system uptime value at
the creation time. 'udevinfo -d' prints it.
o the DEVPATH value is the key for udevdb, but if we rename
a netdev, the name is replaced in the kernel, so we add
the changed name to the db to match with the remove event.
NOTE: The dev.d/ scripts still get the original name from the
hotplug call. Should we replace DEVPATH with the new name too?
o We now only add a device to the db, if we have successfully created
the main node or successfully renamed a netdev. This is the main part
of the patch, cause I needed to clean the retval passing trough all
the functions used for node creation.
o DEVNODE sounds a bit ugly for netdev's so I exported DEVNAME too.
Can we change the name?
o I've added a UDEV_NO_DEVD to possibly skip the script execution
and used it in udev-test.pl.
udevstart is the same horror now, if you have scripts with logging
statements in dev.d/ it takes minutes to finish, can we skip the
scripts here too?
o The get_device_type() function is changed to be more strict, cause
'udevinfo -a -p /block/' gets a class device for it and tries to
print the major/minor values.
o bugfix, the RESULT value has now a working newline removal and a test
for this case.
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udev_dev_d = 1 ;
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env = getenv ( " UDEV_NO_DEVD " ) ;
if ( env & & string_is_true ( env ) )
[PATCH] netdev - udevdb+dev.d changes
Here is a patch to change the netdev handling in the database and for
the dev.d/ calls. I applies on top of the udevd.patch, cause klibc has
no sysinfo().
o netdev's are also put into our database now. I want this for the
udevruler gui to get a list of all handled devices.
All devices in the db are stamped with the system uptime value at
the creation time. 'udevinfo -d' prints it.
o the DEVPATH value is the key for udevdb, but if we rename
a netdev, the name is replaced in the kernel, so we add
the changed name to the db to match with the remove event.
NOTE: The dev.d/ scripts still get the original name from the
hotplug call. Should we replace DEVPATH with the new name too?
o We now only add a device to the db, if we have successfully created
the main node or successfully renamed a netdev. This is the main part
of the patch, cause I needed to clean the retval passing trough all
the functions used for node creation.
o DEVNODE sounds a bit ugly for netdev's so I exported DEVNAME too.
Can we change the name?
o I've added a UDEV_NO_DEVD to possibly skip the script execution
and used it in udev-test.pl.
udevstart is the same horror now, if you have scripts with logging
statements in dev.d/ it takes minutes to finish, can we skip the
scripts here too?
o The get_device_type() function is changed to be more strict, cause
'udevinfo -a -p /block/' gets a class device for it and tries to
print the major/minor values.
o bugfix, the RESULT value has now a working newline removal and a test
for this case.
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udev_dev_d = 0 ;
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}
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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 ;
}
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static int parse_config_file ( void )
{
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char line [ LINE_SIZE ] ;
char * bufline ;
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char * temp ;
char * variable ;
char * value ;
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char * buf ;
size_t bufsize ;
size_t cur ;
size_t count ;
int lineno ;
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int retval = 0 ;
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if ( file_map ( udev_config_filename , & buf , & bufsize ) = = 0 ) {
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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 */
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lineno = 0 ;
cur = 0 ;
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while ( cur < bufsize ) {
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count = buf_get_line ( buf , bufsize , cur ) ;
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bufline = & buf [ cur ] ;
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cur + = count + 1 ;
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lineno + + ;
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if ( count > = LINE_SIZE ) {
info ( " line too long, conf line skipped %s, line %d " ,
udev_config_filename , lineno ) ;
continue ;
}
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/* eat the whitespace */
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while ( ( count > 0 ) & & isspace ( bufline [ 0 ] ) ) {
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bufline + + ;
count - - ;
}
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if ( count = = 0 )
continue ;
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/* see if this is a comment */
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if ( bufline [ 0 ] = = COMMENT_CHARACTER )
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continue ;
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strncpy ( line , bufline , count ) ;
line [ count ] = ' \0 ' ;
temp = line ;
dbg_parse ( " read '%s' " , temp ) ;
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retval = parse_get_pair ( & temp , & variable , & value ) ;
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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 ) ;
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no_trailing_slash ( udev_root ) ;
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continue ;
}
if ( strcasecmp ( variable , " udev_db " ) = = 0 ) {
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strfieldcpy ( udev_db_path , value ) ;
no_trailing_slash ( udev_db_path ) ;
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continue ;
}
if ( strcasecmp ( variable , " udev_rules " ) = = 0 ) {
strfieldcpy ( udev_rules_filename , value ) ;
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no_trailing_slash ( udev_rules_filename ) ;
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continue ;
}
if ( strcasecmp ( variable , " udev_permissions " ) = = 0 ) {
strfieldcpy ( udev_permissions_filename , value ) ;
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no_trailing_slash ( udev_permissions_filename ) ;
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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 ) ;
continue ;
}
if ( strcasecmp ( variable , " udev_log " ) = = 0 ) {
udev_log = string_is_true ( value ) ;
continue ;
}
info ( " %s:%d:%Zd: unknown key '%s' " ,
udev_config_filename , lineno , temp - line , temp ) ;
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}
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file_unmap ( buf , bufsize ) ;
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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 */
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if ( getenv ( " UDEV_TEST " ) ! = NULL ) {
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temp = getenv ( " SYSFS_PATH " ) ;
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if ( temp ! = NULL ) {
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strfieldcpy ( sysfs_path , temp ) ;
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no_trailing_slash ( sysfs_path ) ;
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}
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temp = getenv ( " UDEV_CONFIG_FILE " ) ;
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if ( temp ! = NULL )
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strfieldcpy ( udev_config_filename , temp ) ;
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}
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dbg ( " sysfs_path='%s' " , sysfs_path ) ;
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dbg_parse ( " udev_root = %s " , udev_root ) ;
dbg_parse ( " udev_config_filename = %s " , udev_config_filename ) ;
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dbg_parse ( " udev_db_path = %s " , udev_db_path ) ;
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dbg_parse ( " udev_rules_filename = %s " , udev_rules_filename ) ;
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dbg_parse ( " udev_permissions_filename = %s " , udev_permissions_filename ) ;
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dbg_parse ( " udev_log = %d " , udev_log ) ;
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parse_config_file ( ) ;
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dbg ( " udev_root = %s " , udev_root ) ;
dbg ( " udev_config_filename = %s " , udev_config_filename ) ;
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dbg ( " udev_db_path = %s " , udev_db_path ) ;
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dbg ( " udev_rules_filename = %s " , udev_rules_filename ) ;
dbg ( " udev_permissions_filename = %s " , udev_permissions_filename ) ;
dbg ( " udev_log_str = %d " , udev_log ) ;
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}
void udev_init_config ( void )
{
init_variables ( ) ;
get_dirs ( ) ;
}