2003-10-17 10:40:02 +02:00
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/*
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2004-11-12 06:32:19 +01:00
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* udev_db.c
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2003-10-17 10:40:02 +02:00
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*
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* Userspace devfs
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*
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* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
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2005-02-21 13:48:10 +01:00
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* Copyright (C) 2004-2005 Kay Sievers <kay.sievers@vrfy.org>
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2003-10-17 10:40:02 +02:00
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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2004-11-06 14:28:01 +01:00
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2003-08-06 08:57:23 +02:00
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#include <stdlib.h>
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#include <stdio.h>
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2004-03-02 08:47:59 +01:00
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#include <string.h>
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2004-03-23 07:22:20 +01:00
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#include <stddef.h>
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2005-03-06 12:16:32 +01:00
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#include <unistd.h>
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2003-08-06 08:57:23 +02:00
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#include <fcntl.h>
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#include <string.h>
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#include <errno.h>
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2004-11-06 14:28:01 +01:00
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#include <dirent.h>
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2003-08-06 08:57:23 +02:00
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2004-02-24 04:07:25 +01:00
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#include "libsysfs/sysfs/libsysfs.h"
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2005-03-07 04:29:43 +01:00
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#include "udev_libc_wrapper.h"
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2003-10-16 08:50:13 +02:00
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#include "udev.h"
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2004-11-25 02:44:38 +01:00
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#include "udev_utils.h"
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[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 06:53:20 +01:00
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#include "logging.h"
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2004-11-12 06:32:19 +01:00
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#include "udev_db.h"
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2003-08-06 08:57:23 +02:00
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2004-11-06 14:28:01 +01:00
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#define PATH_TO_NAME_CHAR '@'
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2005-02-21 13:48:10 +01:00
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static int get_db_filename(const char *devpath, char *filename, int len)
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2004-11-06 14:28:01 +01:00
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{
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2005-03-07 04:29:43 +01:00
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char temp[PATH_SIZE];
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2004-11-06 14:28:01 +01:00
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char *pos;
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/* replace '/' to transform path into a filename */
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2005-03-07 04:29:43 +01:00
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strlcpy(temp, devpath, sizeof(temp));
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2005-02-21 13:48:10 +01:00
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pos = strchr(&temp[1], '/');
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2004-11-06 14:28:01 +01:00
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while (pos) {
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pos[0] = PATH_TO_NAME_CHAR;
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pos = strchr(&pos[1], '/');
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}
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2005-02-21 13:48:10 +01:00
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snprintf(filename, len, "%s%s", udev_db_path, temp);
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2004-11-06 14:28:01 +01:00
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filename[len-1] = '\0';
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return 0;
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}
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2003-10-18 08:32:17 +02:00
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2004-11-12 06:32:19 +01:00
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int udev_db_add_device(struct udevice *udev)
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2003-10-18 08:32:17 +02:00
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{
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2005-03-07 04:29:43 +01:00
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char filename[PATH_SIZE];
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2005-03-05 05:35:31 +01:00
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struct name_entry *name_loop;
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2004-11-06 14:28:01 +01:00
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FILE *f;
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2003-10-18 08:32:17 +02:00
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2004-10-19 04:28:39 +02:00
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if (udev->test_run)
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return 0;
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2005-03-07 04:29:43 +01:00
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get_db_filename(udev->devpath, filename, sizeof(filename));
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2004-11-06 14:28:01 +01:00
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create_path(filename);
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f = fopen(filename, "w");
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if (f == NULL) {
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dbg("unable to create db file '%s'", filename);
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2004-10-14 08:13:26 +02:00
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return -1;
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2004-11-06 14:28:01 +01:00
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}
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dbg("storing data for device '%s' in '%s'", udev->devpath, filename);
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2004-10-14 08:13:26 +02:00
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2004-11-06 14:28:01 +01:00
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fprintf(f, "P:%s\n", udev->devpath);
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fprintf(f, "N:%s\n", udev->name);
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2005-03-05 05:35:31 +01:00
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list_for_each_entry(name_loop, &udev->symlink_list, node)
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fprintf(f, "S:%s\n", name_loop->name);
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2005-02-21 13:44:39 +01:00
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fprintf(f, "M:%u:%u\n", major(udev->devt), minor(udev->devt));
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2004-11-13 14:43:24 +01:00
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fprintf(f, "A:%u\n", udev->partitions);
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fprintf(f, "R:%u\n", udev->ignore_remove);
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2003-11-25 07:27:17 +01:00
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2004-11-06 14:28:01 +01:00
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fclose(f);
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2004-02-13 07:51:44 +01:00
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2004-11-06 14:28:01 +01:00
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return 0;
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2003-10-18 08:32:17 +02:00
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}
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2004-11-06 14:28:01 +01:00
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static int parse_db_file(struct udevice *udev, const char *filename)
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2003-08-06 08:57:23 +02:00
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{
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2005-03-07 04:29:43 +01:00
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char line[PATH_SIZE];
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2005-02-21 13:44:39 +01:00
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unsigned int major, minor;
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2004-11-06 14:28:01 +01:00
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char *bufline;
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char *buf;
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size_t bufsize;
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size_t cur;
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size_t count;
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if (file_map(filename, &buf, &bufsize) != 0) {
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dbg("unable to read db file '%s'", filename);
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2004-10-14 08:13:26 +02:00
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return -1;
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2004-11-06 14:28:01 +01:00
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}
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2004-10-14 08:13:26 +02:00
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2004-11-06 14:28:01 +01:00
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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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switch(bufline[0]) {
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case 'P':
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2005-03-07 04:29:43 +01:00
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if (count > sizeof(udev->devpath))
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count = sizeof(udev->devpath)-1;
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strlcpy(udev->devpath, &bufline[2], count-2);
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2004-11-06 14:28:01 +01:00
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break;
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case 'N':
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2005-03-07 04:29:43 +01:00
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if (count > sizeof(udev->name))
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count = sizeof(udev->name)-1;
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strlcpy(udev->name, &bufline[2], count-2);
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2004-11-06 14:28:01 +01:00
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break;
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2005-02-18 03:30:03 +01:00
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case 'M':
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2005-03-07 04:29:43 +01:00
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if (count > sizeof(line))
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count = sizeof(line)-1;
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strlcpy(line, &bufline[2], count-2);
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sscanf(line, "%u:%u", &major, &minor);
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2005-02-21 13:44:39 +01:00
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udev->devt = makedev(major, minor);
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2005-02-18 03:30:03 +01:00
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break;
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2004-11-06 14:28:01 +01:00
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case 'S':
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2005-03-07 04:29:43 +01:00
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if (count > sizeof(line))
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count = sizeof(line)-1;
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strlcpy(line, &bufline[2], count-2);
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name_list_add(&udev->symlink_list, line, 0);
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2004-11-06 14:28:01 +01:00
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break;
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case 'A':
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2005-03-07 04:29:43 +01:00
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if (count > sizeof(line))
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count = sizeof(line)-1;
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strlcpy(line, &bufline[2], count-2);
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2004-11-06 14:28:01 +01:00
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udev->partitions = atoi(line);
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break;
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2004-11-13 14:43:24 +01:00
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case 'R':
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2005-03-07 04:29:43 +01:00
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if (count > sizeof(line))
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count = sizeof(line)-1;
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strlcpy(line, &bufline[2], count-2);
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2004-11-13 14:43:24 +01:00
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udev->ignore_remove = atoi(line);
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break;
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2004-11-06 14:28:01 +01:00
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}
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}
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2005-03-05 02:33:31 +01:00
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file_unmap(buf, bufsize);
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2003-11-25 07:27:17 +01:00
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2004-11-06 14:28:01 +01:00
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if (udev->name[0] == '\0')
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return -1;
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2004-10-19 04:11:51 +02:00
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2003-12-20 03:29:01 +01:00
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return 0;
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2003-08-06 08:57:23 +02:00
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}
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2005-02-21 13:48:10 +01:00
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int udev_db_delete_device(struct udevice *udev)
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2003-08-06 08:57:23 +02:00
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{
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2005-03-07 04:29:43 +01:00
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char filename[PATH_SIZE];
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2003-10-21 05:28:42 +02:00
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2005-03-07 04:29:43 +01:00
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get_db_filename(udev->devpath, filename, sizeof(filename));
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2005-02-21 13:48:10 +01:00
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unlink(filename);
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2003-10-21 05:28:42 +02:00
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2005-02-21 13:48:10 +01:00
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return 0;
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2003-10-21 05:28:42 +02:00
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}
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2005-03-05 05:35:31 +01:00
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int udev_db_get_device(struct udevice *udev, const char *devpath)
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2003-10-15 08:20:53 +02:00
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{
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2005-03-07 04:29:43 +01:00
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char filename[PATH_SIZE];
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2004-11-06 14:28:01 +01:00
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2005-03-07 04:29:43 +01:00
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get_db_filename(devpath, filename, sizeof(filename));
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2003-10-15 08:20:53 +02:00
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2005-03-05 05:35:31 +01:00
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if (parse_db_file(udev, filename) != 0)
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return -1;
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return 0;
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2003-10-15 08:20:53 +02:00
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}
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2003-12-31 07:31:37 +01:00
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2005-03-05 05:35:31 +01:00
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int udev_db_search_name(char *devpath, size_t len, const char *name)
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2003-12-31 07:31:37 +01:00
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{
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2004-11-06 14:28:01 +01:00
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DIR *dir;
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dir = opendir(udev_db_path);
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if (dir == NULL) {
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dbg("unable to udev db '%s'", udev_db_path);
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return -1;
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2004-01-13 10:01:19 +01:00
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}
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2004-11-06 14:28:01 +01:00
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while (1) {
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2005-03-05 11:55:59 +01:00
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struct dirent *ent;
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2005-03-07 04:29:43 +01:00
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char filename[PATH_SIZE];
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char path[PATH_SIZE];
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char nodename[PATH_SIZE];
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2005-03-05 05:35:31 +01:00
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char *bufline;
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char *buf;
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size_t bufsize;
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size_t cur;
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size_t count;
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2004-11-06 14:28:01 +01:00
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ent = readdir(dir);
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if (ent == NULL || ent->d_name[0] == '\0')
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break;
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2004-01-13 10:01:19 +01:00
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2004-11-06 14:28:01 +01:00
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if (ent->d_name[0] == '.')
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continue;
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2004-01-13 10:01:19 +01:00
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2005-03-07 04:29:43 +01:00
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snprintf(filename, sizeof(filename), "%s/%s", udev_db_path, ent->d_name);
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filename[sizeof(filename)-1] = '\0';
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2005-03-05 05:35:31 +01:00
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dbg("looking at '%s'", filename);
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2004-01-20 04:40:32 +01:00
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2005-03-05 05:35:31 +01:00
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if (file_map(filename, &buf, &bufsize) != 0) {
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dbg("unable to read db file '%s'", filename);
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continue;
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}
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2004-01-20 04:40:32 +01:00
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2005-03-05 05:35:31 +01:00
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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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switch(bufline[0]) {
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case 'P':
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2005-03-07 04:29:43 +01:00
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if (count > sizeof(path))
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count = sizeof(path)-1;
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strlcpy(path, &bufline[2], count-2);
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2005-03-05 05:35:31 +01:00
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break;
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case 'N':
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case 'S':
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2005-03-07 04:29:43 +01:00
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if (count > sizeof(nodename))
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count = sizeof(nodename)-1;
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strlcpy(nodename, &bufline[2], count-2);
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2005-03-05 05:35:31 +01:00
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dbg("compare '%s' '%s'", nodename, name);
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if (strcmp(nodename, name) == 0) {
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2005-03-07 04:29:43 +01:00
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strlcpy(devpath, path, len);
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2005-03-05 05:35:31 +01:00
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file_unmap(buf, bufsize);
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closedir(dir);
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return 0;
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}
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break;
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default:
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continue;
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2004-11-06 14:28:01 +01:00
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}
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}
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2005-03-05 05:35:31 +01:00
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file_unmap(buf, bufsize);
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2004-01-20 04:40:32 +01:00
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}
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2004-03-04 03:16:35 +01:00
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2004-11-06 14:28:01 +01:00
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closedir(dir);
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return -1;
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2004-01-20 04:40:32 +01:00
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}
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2005-02-25 07:40:14 +01:00
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2005-03-05 11:55:59 +01:00
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int udev_db_dump_names(int (*handler_function)(const char *path, const char *name))
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2005-02-25 07:40:14 +01:00
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{
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DIR *dir;
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dir = opendir(udev_db_path);
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if (dir == NULL) {
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dbg("unable to udev db '%s'", udev_db_path);
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|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
while (1) {
|
2005-03-05 11:55:59 +01:00
|
|
|
struct dirent *ent;
|
2005-03-07 04:29:43 +01:00
|
|
|
char filename[PATH_SIZE];
|
|
|
|
char path[PATH_SIZE];
|
|
|
|
char nodename[PATH_SIZE];
|
2005-03-05 11:55:59 +01:00
|
|
|
char *bufline;
|
|
|
|
char *buf;
|
|
|
|
size_t bufsize;
|
|
|
|
size_t cur;
|
|
|
|
size_t count;
|
|
|
|
|
2005-02-25 07:40:14 +01:00
|
|
|
ent = readdir(dir);
|
|
|
|
if (ent == NULL || ent->d_name[0] == '\0')
|
|
|
|
break;
|
|
|
|
|
|
|
|
if (ent->d_name[0] == '.')
|
|
|
|
continue;
|
|
|
|
|
2005-03-07 04:29:43 +01:00
|
|
|
snprintf(filename, sizeof(filename), "%s/%s", udev_db_path, ent->d_name);
|
|
|
|
filename[sizeof(filename)-1] = '\0';
|
2005-03-05 11:55:59 +01:00
|
|
|
dbg("looking at '%s'", filename);
|
|
|
|
|
|
|
|
if (file_map(filename, &buf, &bufsize) != 0) {
|
|
|
|
dbg("unable to read db file '%s'", filename);
|
|
|
|
continue;
|
|
|
|
}
|
2005-02-25 07:40:14 +01:00
|
|
|
|
2005-03-05 11:55:59 +01:00
|
|
|
path[0] = '\0';
|
|
|
|
nodename[0] = '\0';
|
|
|
|
cur = 0;
|
|
|
|
while (cur < bufsize) {
|
|
|
|
count = buf_get_line(buf, bufsize, cur);
|
|
|
|
bufline = &buf[cur];
|
|
|
|
cur += count+1;
|
2005-03-05 05:35:31 +01:00
|
|
|
|
2005-03-05 11:55:59 +01:00
|
|
|
switch(bufline[0]) {
|
|
|
|
case 'P':
|
2005-03-07 04:29:43 +01:00
|
|
|
if (count > sizeof(path))
|
|
|
|
count = sizeof(path)-1;
|
|
|
|
strlcpy(path, &bufline[2], count-2);
|
2005-02-25 07:40:14 +01:00
|
|
|
break;
|
2005-03-05 11:55:59 +01:00
|
|
|
case 'N':
|
2005-03-07 04:29:43 +01:00
|
|
|
if (count > sizeof(nodename))
|
|
|
|
count = sizeof(nodename)-1;
|
|
|
|
strlcpy(nodename, &bufline[2], count-2);
|
2005-03-05 11:55:59 +01:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
continue;
|
|
|
|
}
|
2005-02-25 07:40:14 +01:00
|
|
|
}
|
2005-03-05 11:55:59 +01:00
|
|
|
file_unmap(buf, bufsize);
|
|
|
|
|
|
|
|
if (path[0] == '\0' || nodename[0] == '\0')
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (handler_function(path, nodename) != 0)
|
|
|
|
break;
|
2005-02-25 07:40:14 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
closedir(dir);
|
|
|
|
return 0;
|
|
|
|
}
|