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Systemd/udev.h

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added initial files.
2005-04-27 05:59:47 +02:00
/*
* udev.h
*
* Userspace devfs
*
* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
*
* 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 02139, USA.
*
*/
[PATCH] replace fgets() with mmap() and introduce udev_lib.[hc] Here we replace the various fgets() with a mmap() call for the config file reading, due to the reported performance problems with klibc. Thanks to Patrick's testing, it makes a very small, close to nothing speed gain for libc users, but a 6 times speed increase for klibc users with a 1000 line config file. I've created a udev_lib.[hc] for this and also moved all the generic stuff from udev.h in there and uninlined the functions.
2004-03-23 07:22:20 +01:00
#ifndef _UDEV_H_
#define _UDEV_H_
added initial files.
2005-04-27 05:59:47 +02:00
[PATCH] Build failure - missing linux/limits.h include? On Tuesday 25 November 2003 00:12, Chris Larson wrote: > udev fails to compile here unless I'm doing a KLIBC build.  The reason > appears to be that the normal limits.h in the gcc inc dir doesn't pull > in linux/limits.h, whereas the limits.h out in the klibc include dirs > does.  I'd think it'd be best to add a #include <linux/limits.h> to > udev.h directly, since it uses PATH_MAX. No, don't include kernel headers directly if you can avoid it. The problem you are referring to seems to be with old tool chains, I have the same symptom with my s390 gcc-2.95/glibc-2.1.3. Including <sys/param.h> instead of <limits.h> seems to fix it.
2003-12-02 09:26:46 +01:00
#include <sys/param.h>
[PATCH] replace fgets() with mmap() and introduce udev_lib.[hc] Here we replace the various fgets() with a mmap() call for the config file reading, due to the reported performance problems with klibc. Thanks to Patrick's testing, it makes a very small, close to nothing speed gain for libc users, but a 6 times speed increase for klibc users with a 1000 line config file. I've created a udev_lib.[hc] for this and also moved all the generic stuff from udev.h in there and uninlined the functions.
2004-03-23 07:22:20 +01:00
#include "libsysfs/sysfs/libsysfs.h"
added initial files.
2005-04-27 05:59:47 +02:00
[PATCH] prevent deadlocks on an corrupt udev database Here is the patch, that should prevent all of the known deadlocks with corrupt tdb databases we discovered. Thanks to Frank Steiner <fsteiner-mail@bio.ifi.lmu.de>, who tested all this endlessly with a NFS mounted /dev. The conclusion is, that udev will not work on filesystems without proper record locking, but we should prevent the endless loops anyway. This patch implements: o recovery from a corrupted udev database. udev will continue without database support now, instead of doing nothing. So the node should be generated in any case, remove will obviously not work for custom names. o added iteration limits to the tdb-code at the places we discovered endless loops. In the case tdb tries to find more than 100.000 entries with the same hash, we better give up :) o prevent a {all_partitions} loop caused by corrupt db data o log all tdb errors to syslog o switch sleep() to usleep() cause we want to use alarm()
2004-10-14 08:13:26 +02:00
#define ALARM_TIMEOUT 30
[PATCH] add support for a main udev config file, udev.conf. the older udev.config file is now called udev.rules. This allows us to better control configuration values, and move away from the environment variables.
2003-12-03 10:08:46 +01:00
#define COMMENT_CHARACTER '#'
[PATCH] put config files and database in /etc/udev by default Can be overridden on the makefile line.
2003-10-16 08:50:13 +02:00
[PATCH] Increase the name size as requested by Richard Gooch <rgooch@ras.ucalgary.ca>
2004-03-23 07:39:39 +01:00
#define NAME_SIZE 256
[PATCH] replace fgets() with mmap() and introduce udev_lib.[hc] Here we replace the various fgets() with a mmap() call for the config file reading, due to the reported performance problems with klibc. Thanks to Patrick's testing, it makes a very small, close to nothing speed gain for libc users, but a 6 times speed increase for klibc users with a 1000 line config file. I've created a udev_lib.[hc] for this and also moved all the generic stuff from udev.h in there and uninlined the functions.
2004-03-23 07:22:20 +01:00
#define OWNER_SIZE 30
#define GROUP_SIZE 30
#define MODE_SIZE 8
[PATCH] add initial libsysfs support... needs lots more cleanup, but is much nicer than doing this by hand...
2003-07-19 07:48:28 +02:00
[PATCH] pass SEQNUM trough udevd here we change udevd to pass the SEQNUM from the hotplug environment to udev and the dev.d/ scripts. We need this for HAL to match the hotplug event with the dev.d/ events. It also changes the type from int to long to match the kernel.
2004-09-05 18:05:29 +02:00
#define ACTION_SIZE 32
#define DEVPATH_SIZE 256
#define SUBSYSTEM_SIZE 32
#define SEQNUM_SIZE 32
[PATCH] udev - safer string handling - part three Here we truncate our input strings from the environment to our defined limit. It's a bit theroretical but better check for it. It cleans up some magic length definitions and removes the code duplication in udev, udevtest and udevsend. udevd needs to be killed after installation, cause the message size is changed with this patch. Should we do this with the 'make install', like we do with the '.udevdb'?
2004-02-27 04:40:32 +01:00
[PATCH] udev - read long lines from config files overflow fix Hi Kay, On 23:12 Sat 04 Sep , Kay Sievers wrote: > Cool, a real bug :) > Thanks, for the patch. I think it would be better to skip lenghth exceeding > lines instead of cutting it and continue. While looking at it I restructured > the buffer reading logic a bit and fixed another stupid bug. Thanks for the cleanup. You may have overlooked the fix for udev_config.c(parsing udev.conf) in your patch. So, I've adapted the fixes you applied to namedev_parse.c to this file also. Also, while 'eating' the whitespace the 'count' doesn't get decremented. This leads strncpy to copy the number of whitespace minus 1 characters from the next line. Minus 1 because it copies '\n' from the current line. while (isspace(bufline[0])) { bufline++; + count--; } . . . strncpy(line, bufline, count); Included patch(against udev-030) contains the above fixes as well as your fixes. Signed-off-by: Arun Bhanu <arun@codemovers.org>
2004-09-11 05:54:04 +02:00
#define LINE_SIZE 256
[PATCH] Fix naming ethernet devices in udevstart On Tue, Sep 07, 2004 at 12:46:43PM +0200, Kay Sievers wrote: > On Mon, 2004-09-06 at 20:18 -0700, Tom Rini wrote: > > I noticed somewhat recently that my enet devices weren't being renamed > > on boot anymore. I don't quite know when this got broken (or rather, if > > it was supposed to be working. I swear it worked for me once..), but > > the following seems to do it. > > I think it never worked in the udevstart case. It worked only with the > hotplug-event-udev, I expect. > > > In udev_scan_class(), look for not just > > %s/%s/dev (which everything with a dev node has), but %s/%s/dev* (both > > of my enet devices, sis900 & 3c59x only have device) and if that > > exists, pass this along to udev. > > Yeah, network devices don't have a devnode and therefore no "dev", but > they are all in /sys/class/net/. We may just test if we are there > instead of the "device" match. How about something like this. It adds all the net devices without looking at the attributes and keeps the remaining logic like it is. It also removes certain levels of indirection and much simplifies the udevstart process. We surely don't need to open and close the udevdb for every node while iterating over the list. (We are about 5% faster on my box) It's not well tested, so it would be nice if someone can have a look at it, before a broken udevstart renders any system unbootable.
2004-09-11 06:09:25 +02:00
#define FAKE 1
#define NOFAKE 0
[PATCH] switch udev's seqnum to u64 The kernel will use a u64 for the sequence number, so we want the same.
2004-09-16 07:36:31 +02:00
/* length of public data to store in udevdb */
[PATCH] udev - keep private data out of the database? Shouldn't we keep the temporary strings out of the database, or is this information useful for something? It cuts the length of the data from 628 to 275 bytes.
2004-02-13 07:51:44 +01:00
#define UDEVICE_LEN (offsetof(struct udevice, bus_id))
[PATCH] major database cleanups Now we standardise on a struct udevice to pass around, and store in the database. This cleaned up the database code a lot.
2003-10-21 07:48:44 +02:00
struct udevice {
char name[NAME_SIZE];
char owner[OWNER_SIZE];
char group[GROUP_SIZE];
char type;
int major;
int minor;
[PATCH] stop using mode_t as different libcs define it in different ways :(
2004-02-12 10:29:40 +01:00
unsigned int mode; /* not mode_t due to conflicting definitions in different libcs */
[PATCH] experimental (very simple) SYMLINK creation > > here is a experimental symlink creation patch - for discussion, > > in which direction we should go. > > It is possible now to define SYMLINK= after the NAME= in udev.rules. > > The link is relative to the node, but the path is not optimized now > > if the node and the link are in the same nested directory. > > Only one link is supported, cause i need to sleep now :) > > > > 06-simple-symlink-creation.diff > > simple symlink creation > > reorganized udev-remove to have access to the symlink field > > subdir creation/removal are functions now > > udev-test.pl tests for link creation/removal Here is a new version with relative link target path optimization an better tests in udev-test.pl: LABEL, BUS="scsi", vendor="IBM-ESXS", NAME="1/2/a/b/node", SYMLINK="1/2/c/d/symlink" Dec 7 06:48:34 pim udev[13789]: create_node: symlink 'udev-root/1/2/c/d/symlink' to node '1/2/a/b/node' requested Dec 7 06:48:34 pim udev[13789]: create_path: created 'udev-root/1/2/c' Dec 7 06:48:34 pim udev[13789]: create_path: created 'udev-root/1/2/c/d' Dec 7 06:48:34 pim udev[13789]: create_node: symlink(../../a/b/node, udev-root/1/2/c/d/symlink)
2003-12-07 18:12:07 +01:00
char symlink[NAME_SIZE];
[PATCH] udev - create all partitions of blockdevice Here is the first try to create all partitons of a blockdevice, since removable media devices may need to acces the expected partition to revalidate the media. It uses the attribute syntax introduced with the last %s{file} patch. I'm using this with my multi-slot-flash-card-reader: SYSFS{model}="USB Storage-SMC ", NAME{all_partitions}="smartmedia" SYSFS{model}="USB Storage-CFC ", NAME{all_partitions}="compactflash" SYSFS{model}="USB Storage-MSC ", NAME{all_partitions}="memorystick" SYSFS{model}="USB Storage-MMC ", NAME{all_partitions}="multimedia" and I get: tree /udev/ /udev/ |-- memorystick |-- memorystick1 |-- memorystick10 |-- memorystick11 |-- memorystick12 |-- memorystick13 |-- memorystick14 |-- memorystick15 |-- memorystick2 |-- memorystick3 |-- memorystick4 |-- memorystick5 |-- memorystick6 |-- memorystick7 |-- memorystick8 |-- memorystick9 |-- multimedia |-- multimedia1 |-- multimedia10 |-- multimedia11 |-- multimedia12 |-- multimedia13 |-- multimedia14 |-- multimedia15 |-- multimedia2 |-- multimedia3 |-- multimedia4 |-- multimedia5 |-- multimedia6 |-- multimedia7 |-- multimedia8 |-- multimedia9 ... If needed, we can make the number of partions to create adjustable with the attribute?
2004-02-17 06:44:28 +01:00
int partitions;
[PATCH] first stupid try for a rule compose gui On Mon, Mar 15, 2004 at 09:28:17PM +0100, Kay Sievers wrote: > Here is a first simple and pretty stupid try to make a simple tool for > composing of a udev rule. > > It reads the udevdb to get all currently handled devices and presents a > list, where you can choose the device to compose the rule for. > > The composed rule is just printed out in a window, nothing else by now. > > Do we want something like this? > Nevermind, I always wanted to know, how this newt thing works :) Here is the next step, I still can't sleep and there are to many patches pending to make something useful :) Cause nobody wanted to play with me, I've made a screenshot. The device list is sorted in alphabetical order now and if there are only a few recently discovered devices, they are placed on top of the list. For those who want to have a look: http://vrfy.org/projects/udev/udevruler.png The patch applies on top of today's mmap() patch. The db format is changed to have the file and line number of the applied rule. So it should be easy to edit the matching rule with this beast. It compiles with "make all udevruler".
2004-03-24 03:24:25 +01:00
int config_line;
char config_file[NAME_SIZE];
[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.
2004-04-01 09:12:57 +02:00
long config_uptime;
[PATCH] added ability to put format specifiers in the CALLOUT program string.
2003-11-24 07:25:13 +01:00
[PATCH] udev - keep private data out of the database? Shouldn't we keep the temporary strings out of the database, or is this information useful for something? It cuts the length of the data from 628 to 275 bytes.
2004-02-13 07:51:44 +01:00
/* private data that help us in building strings */
char bus_id[SYSFS_NAME_LEN];
char program_result[NAME_SIZE];
char kernel_number[NAME_SIZE];
char kernel_name[NAME_SIZE];
[PATCH] major database cleanups Now we standardise on a struct udevice to pass around, and store in the database. This cleaned up the database code a lot.
2003-10-21 07:48:44 +02:00
};
[PATCH] Make udev/udevstart be one binary Hi, The following patch makes udev/udevstart be a common binary. First, doing this grows udev by a total of 1.8kB (ppc32, stripped) whereas udevstart by itself is 6.4kB. I know you mentioned being able to replace udevstart with a script, but at 1.8kB I don't think it'll be easy to beat this with size there. Next, the following are by-eye timings of before, after, and with devfs on a slow, but still usable embedded platform (config stripped down to more-or-less bare for ramdisk): -- Embedded Planet RPX LITE, 64Mhz MPC 823e -- devfs : 15.333s, 15.253s, 14.988s (15.191s avg) udev-pristine : 18.675s, 18.079s, 18.418s (18.390s avg) udev-multi : 14.587s, 14.747s, 14.868s (14.734s avg) The patch ends up being rather large to add this, as in doing so I ended up making all refs (that I hit..) to devpath/subsystem be marked as 'const'. Signed-off-by: Tom Rini <trini@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2004-08-10 09:50:21 +02:00
extern int udev_add_device(const char *path, const char *subsystem, int fake);
extern int udev_remove_device(const char *path, const char *subsystem);
[PATCH] add support for a main udev config file, udev.conf. the older udev.config file is now called udev.rules. This allows us to better control configuration values, and move away from the environment variables.
2003-12-03 10:08:46 +01:00
extern void udev_init_config(void);
[PATCH] Make udev/udevstart be one binary Hi, The following patch makes udev/udevstart be a common binary. First, doing this grows udev by a total of 1.8kB (ppc32, stripped) whereas udevstart by itself is 6.4kB. I know you mentioned being able to replace udevstart with a script, but at 1.8kB I don't think it'll be easy to beat this with size there. Next, the following are by-eye timings of before, after, and with devfs on a slow, but still usable embedded platform (config stripped down to more-or-less bare for ramdisk): -- Embedded Planet RPX LITE, 64Mhz MPC 823e -- devfs : 15.333s, 15.253s, 14.988s (15.191s avg) udev-pristine : 18.675s, 18.079s, 18.418s (18.390s avg) udev-multi : 14.587s, 14.747s, 14.868s (14.734s avg) The patch ends up being rather large to add this, as in doing so I ended up making all refs (that I hit..) to devpath/subsystem be marked as 'const'. Signed-off-by: Tom Rini <trini@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2004-08-10 09:50:21 +02:00
extern int udev_start(void);
[PATCH] move get_pair to udev_config.c because udevinfo doesn't need all of namedev.o
2004-01-27 04:21:58 +01:00
extern int parse_get_pair(char **orig_string, char **left, char **right);
[PATCH] Make udev/udevstart be one binary Hi, The following patch makes udev/udevstart be a common binary. First, doing this grows udev by a total of 1.8kB (ppc32, stripped) whereas udevstart by itself is 6.4kB. I know you mentioned being able to replace udevstart with a script, but at 1.8kB I don't think it'll be easy to beat this with size there. Next, the following are by-eye timings of before, after, and with devfs on a slow, but still usable embedded platform (config stripped down to more-or-less bare for ramdisk): -- Embedded Planet RPX LITE, 64Mhz MPC 823e -- devfs : 15.333s, 15.253s, 14.988s (15.191s avg) udev-pristine : 18.675s, 18.079s, 18.418s (18.390s avg) udev-multi : 14.587s, 14.747s, 14.868s (14.734s avg) The patch ends up being rather large to add this, as in doing so I ended up making all refs (that I hit..) to devpath/subsystem be marked as 'const'. Signed-off-by: Tom Rini <trini@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
2004-08-10 09:50:21 +02:00
extern void dev_d_send(struct udevice *dev, const char *subsystem,
const char *devpath);
[PATCH] enabled debugging.
2003-04-11 05:04:38 +02:00
[PATCH] add callout config type to udev This patch adds a callout config type to udev, so external programs can be called to get serial numbers or id's that are not available as a sysfs attribute.
2003-10-15 08:32:17 +02:00
extern char **main_argv;
extern char **main_envp;
[PATCH] make config files, sysfs root, and udev root configurable from config variables This will make running tests a lot simpler.
2003-10-22 05:19:09 +02:00
extern char sysfs_path[SYSFS_PATH_MAX];
[PATCH] add support for a main udev config file, udev.conf. the older udev.config file is now called udev.rules. This allows us to better control configuration values, and move away from the environment variables.
2003-12-03 10:08:46 +01:00
extern char udev_root[PATH_MAX];
[PATCH] make config files, sysfs root, and udev root configurable from config variables This will make running tests a lot simpler.
2003-10-22 05:19:09 +02:00
extern char udev_db_filename[PATH_MAX+NAME_MAX];
[PATCH] get rid of the majority of the debug environment variables. Now there are only 3 valid environment test variables. The rest can be specified with the config file.
2003-12-03 17:13:11 +01:00
extern char udev_permissions_filename[PATH_MAX+NAME_MAX];
[PATCH] make config files, sysfs root, and udev root configurable from config variables This will make running tests a lot simpler.
2003-10-22 05:19:09 +02:00
extern char udev_config_filename[PATH_MAX+NAME_MAX];
[PATCH] add support for a main udev config file, udev.conf. the older udev.config file is now called udev.rules. This allows us to better control configuration values, and move away from the environment variables.
2003-12-03 10:08:46 +01:00
extern char udev_rules_filename[PATH_MAX+NAME_MAX];
[PATCH] set default owner/group in db - update I've edited the man page today, so this is alreay included :) Also a few more trivials: o added the defaults to udev.conf.in o removed class_dev from get_default_mode(), to match with Hanna's o changed size of mode_str to MODE_SIZE o changed a few char compares from from 0x00 to '\0'
2004-01-20 04:44:24 +01:00
extern char default_mode_str[MODE_SIZE];
[PATCH] set default owner/group in db. This patch fixes a bug where the udev database stored empty strings for Owner and Group if they were default. This patch stores the default value into the database if not set otherwise. See example output: crw------- 1 root root 4, 65 Jan 16 11:13 ttyS1 P: /class/tty/ttyS1 N: ttyS1 S: O: root G: root This is a bit of a hack. However, until udev supports setting the o/g values they will be root/root anyway so the database might as well reflect the truth instead of empty strings.
2004-01-20 04:42:42 +01:00
extern char default_owner_str[OWNER_SIZE];
extern char default_group_str[GROUP_SIZE];
[PATCH] fix log option code so that it actually works for all udev programs. Also introduce boolean type for config file to use.
2004-02-12 07:10:26 +01:00
extern 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.
2004-04-01 09:12:57 +02:00
extern int udev_dev_d;
[PATCH] make config files, sysfs root, and udev root configurable from config variables This will make running tests a lot simpler.
2003-10-22 05:19:09 +02:00
added initial files.
2005-04-27 05:59:47 +02:00
#endif
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