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54988802b7
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
145 lines
3.2 KiB
C
145 lines
3.2 KiB
C
/*
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* udev-remove.c
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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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*
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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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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include "udev.h"
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#include "udev_version.h"
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#include "udev_dbus.h"
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#include "logging.h"
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#include "namedev.h"
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#include "udevdb.h"
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#include "libsysfs/libsysfs.h"
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static int delete_path(char *path)
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{
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char *pos;
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int retval;
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pos = strrchr(path, '/');
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while (1) {
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*pos = '\0';
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pos = strrchr(path, '/');
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/* don't remove the last one */
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if ((pos == path) || (pos == NULL))
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break;
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/* remove if empty */
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retval = rmdir(path);
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if (retval) {
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if (errno == ENOTEMPTY)
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return 0;
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dbg("rmdir(%s) failed with error '%s'",
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path, strerror(errno));
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break;
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}
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dbg("removed '%s'", path);
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}
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return 0;
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}
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static int delete_node(struct udevice *dev)
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{
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char filename[255];
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char *symlinks;
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char *linkname;
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int retval;
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strncpy(filename, udev_root, sizeof(filename));
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strncat(filename, dev->name, sizeof(filename));
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info("removing device node '%s'", filename);
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retval = unlink(filename);
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if (retval) {
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dbg("unlink(%s) failed with error '%s'",
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filename, strerror(errno));
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return retval;
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}
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/* remove subdirectories */
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if (strchr(dev->name, '/'))
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delete_path(filename);
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if (*dev->symlink) {
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symlinks = dev->symlink;
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while (1) {
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linkname = strsep(&symlinks, " ");
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if (linkname == NULL)
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break;
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strncpy(filename, udev_root, sizeof(filename));
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strncat(filename, linkname, sizeof(filename));
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dbg("unlinking symlink '%s'", filename);
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retval = unlink(filename);
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if (retval) {
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dbg("unlink(%s) failed with error '%s'",
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filename, strerror(errno));
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return retval;
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}
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if (strchr(dev->symlink, '/')) {
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delete_path(filename);
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}
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}
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}
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return retval;
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}
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/*
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* Look up the sysfs path in the database to see if we have named this device
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* something different from the kernel name. If we have, us it. If not, use
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* the default kernel name for lack of anything else to know to do.
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*/
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int udev_remove_device(char *path, char *subsystem)
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{
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struct udevice dev;
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char *temp;
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int retval;
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memset(&dev, 0, sizeof(dev));
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retval = udevdb_get_dev(path, &dev);
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if (retval) {
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dbg("'%s' not found in database, falling back on default name", path);
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temp = strrchr(path, '/');
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if (temp == NULL)
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return -ENODEV;
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strncpy(dev.name, &temp[1], sizeof(dev.name));
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}
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dbg("name is '%s'", dev.name);
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udevdb_delete_dev(path);
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sysbus_send_remove(dev.name, path);
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retval = delete_node(&dev);
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return retval;
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}
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