[PATCH] split udev main logic into udev-add and udev-remove.

1 files changed, 88 insertions, 0 deletions

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 <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.
+ *
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+#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;
+}
+