From ea733a2f00174c3a39c8eb783e330b6a69abd67c Mon Sep 17 00:00:00 2001 From: "greg@kroah.com" Date: Sun, 20 Jul 2003 20:48:48 -0700 Subject: [PATCH] split udev main logic into udev-add and udev-remove. --- udev-remove.c | 88 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 88 insertions(+) create mode 100644 udev-remove.c (limited to 'udev-remove.c') diff --git a/udev-remove.c b/udev-remove.c new file mode 100644 index 0000000000..cd917af193 --- /dev/null +++ b/udev-remove.c @@ -0,0 +1,88 @@ +/* + * udev-remove.c + * + * Userspace devfs + * + * Copyright (C) 2003 Greg Kroah-Hartman + * + * + * 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. + * + */ + +#include +#include +#include +#include +#include +#include + +#include "udev.h" +#include "udev_version.h" +#include "namedev.h" +#include "libsysfs/libsysfs.h" + + +/* + * Here would go a call to the naming deamon, to get the name we want to have + * for this device. But for now, let's just default to whatever the kernel is + * calling the device as that will keep the "old-style" naming policy + */ +static char *get_name(char *dev, int major, int minor) +{ + static char name[100]; + char *temp; + + temp = strrchr(dev, '/'); + if (temp == NULL) + return NULL; + strncpy(name, &temp[1], sizeof(name)); + + dbg("name is %s", name); + + return &name[0]; +} + +/* + * We also want to clean up any symlinks that were created in create_node() + */ +static int delete_node(char *name) +{ + char filename[255]; + + strncpy(filename, UDEV_ROOT, sizeof(filename)); + strncat(filename, name, sizeof(filename)); + + dbg("unlinking %s", filename); + return unlink(filename); +} + +int udev_remove_device(char *device, char *subsystem) +{ + char *name; + int retval = 0; + + name = get_name(device, 0, 0); + if (name == NULL) { + dbg ("get_name failed"); + retval = -ENODEV; + goto exit; + } + + return delete_node(name); + +exit: + return retval; +} + -- cgit v1.2.3-54-g00ecf