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systemd-stable/udev_utils.h

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[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 09:22:20 +03:00
/*
* udev_lib - generic stuff used by udev
*
* Copyright (C) 2004 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
* 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.
*
*/
#ifndef _UDEV_LIB_H_
#define _UDEV_LIB_H_
[PATCH] big cleanup of internal udev api Here is the first patch to cleanup the internal processing of the various stages of an udev event. It should not change any behavior, but if your system depends on udev, please always test it before reboot :) We pass only one generic structure around between add, remove, namedev, db and dev_d handling and make all relevant data available to all internal stages. All udev structures are renamed to "udev". We replace the fake parameter by a flag in the udev structure. We open the class device in the main binaries and not in udev_add, to make it possible to use libsysfs for udevstart directory crawling. The last sleep parameters are removed.
2004-10-19 06:11:51 +04:00
#include "udev.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 09:22:20 +03:00
[PATCH] remove typedef for call_foreach_file() handler function
2005-03-04 23:33:57 +03:00
struct name_entry {
struct list_head node;
[PATCH] replace strncpy()/strncat() by strlcpy()/strlcat()
2005-03-07 06:29:43 +03:00
char name[PATH_SIZE];
[PATCH] remove typedef for call_foreach_file() handler function
2005-03-04 23:33:57 +03:00
};
[PATCH] move execute_program to utils + add action to init_device
2005-03-29 13:25:52 +04:00
extern int udev_init_device(struct udevice *udev, const char* devpath, const char *subsystem, const char *action);
[PATCH] allow unlimitied count of symlinks
2005-03-05 07:35:31 +03:00
extern void udev_cleanup_device(struct udevice *udev);
[PATCH] trivial: fix signedness We are already using %u in the sscanf() format string. The patch replaces the int for the kernel release number with unsigned int, as we can never have negative release numbers.
2005-02-06 03:39:25 +03:00
extern int kernel_release_satisfactory(unsigned int version, unsigned int patchlevel, unsigned int sublevel);
[PATCH] replace tdb database by simple lockless file database This makes the udev operation completely lockless by storing a file for every node in /dev/.udevdb/* This solved the problem with deadlocking concurrent udev processes waiting for each other to release the file lock under heavy load.
2004-11-06 16:28:01 +03:00
extern int create_path(const char *path);
[PATCH] allow multiline rules by backslash at the end of the line On Sun, 2004-12-19 at 18:31 +0100, Marco d'Itri wrote: > > On Dec 19, Kay Sievers <kay.sievers@vrfy.org> wrote: > > > (Feature request: would it be possible to extend the rules files parser > > to support continuation lines? I'd like it to consider lines starting > > with white space as part of the previous line.) > > How about the usual backslash at the end of the line. Here is a simple > patch.
2004-12-20 09:38:33 +03:00
extern int parse_get_pair(char **orig_string, char **left, char **right);
[PATCH] provide temporary device node for callouts to access the device %N will create a temporary node for a callout a be sustituted with the name of the node.
2005-02-09 06:37:32 +03:00
extern int unlink_secure(const char *filename);
[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 09:22:20 +03:00
extern int file_map(const char *filename, char **buf, size_t *bufsize);
extern void file_unmap(char *buf, size_t bufsize);
[PATCH] allow multiline rules by backslash at the end of the line On Sun, 2004-12-19 at 18:31 +0100, Marco d'Itri wrote: > > On Dec 19, Kay Sievers <kay.sievers@vrfy.org> wrote: > > > (Feature request: would it be possible to extend the rules files parser > > to support continuation lines? I'd like it to consider lines starting > > with white space as part of the previous line.) > > How about the usual backslash at the end of the line. Here is a simple > patch.
2004-12-20 09:38:33 +03:00
extern size_t buf_get_line(const char *buf, size_t buflen, size_t cur);
[PATCH] remove untrusted chars read from sysfs-values or returned by PROGRAM Better remove characters that are useless in a device node name. It may be a security risk to pass any character read from e.g. a sysfs attribute to a shell script we execute later. Prevent the modification of the libsysfs attribute value cache. Clear PROGRAM result if the execution encountered an error.
2005-03-27 03:15:07 +04:00
extern void remove_trailing_char(char *path, char c);
extern void replace_untrusted_chars(char *string);
[PATCH] remove typedef for call_foreach_file() handler function
2005-03-04 23:33:57 +03:00
extern int name_list_add(struct list_head *name_list, const char *name, int sort);
[PATCH] change call_foreach_file to return a list
2005-03-17 11:59:32 +03:00
extern int add_matching_files(struct list_head *name_list, const char *dirname, const char *suffix);
[PATCH] move execute_program to utils + add action to init_device
2005-03-29 13:25:52 +04:00
extern int execute_command(const char *command, const char *subsystem);
[PATCH] change call_foreach_file to return a list
2005-03-17 11:59:32 +03:00
[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 09:22:20 +03:00
#endif
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