X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev-remove.c;h=27ff5bc0a2e12d38167ba1db43d85ca78ac3ccf0;hp=666928f318fa7699062f75009f503179262a1ce0;hb=9b28a52a0ac9b7993c932bbfe9d86dfc814be218;hpb=c056c5141b16fe95485eeb233fe8b90954686a60

diff --git a/udev-remove.c b/udev-remove.c
index 666928f31..27ff5bc0a 100644
--- a/udev-remove.c
+++ b/udev-remove.c
@@ -29,70 +29,132 @@
 #include <errno.h>
 
 #include "udev.h"
+#include "udev_lib.h"
 #include "udev_version.h"
+#include "logging.h"
 #include "namedev.h"
 #include "udevdb.h"
-#include "libsysfs/libsysfs.h"
 
+static int delete_path(char *path)
+{
+	char *pos;
+	int retval;
 
-/*
- * Look up the sysfs path in the database to see if we have named this device
- * something different from the kernel name.  If we have, us it.  If not, use
- * the default kernel name for lack of anything else to know to do.
- */
-static char *get_name(char *path, int major, int minor)
+	pos = strrchr(path, '/');
+	while (1) {
+		*pos = '\0';
+		pos = strrchr(path, '/');
+
+		/* don't remove the last one */
+		if ((pos == path) || (pos == NULL))
+			break;
+
+		/* remove if empty */
+		retval = rmdir(path);
+		if (errno == ENOENT)
+			retval = 0;
+		if (retval) {
+			if (errno == ENOTEMPTY)
+				return 0;
+			dbg("rmdir(%s) failed with error '%s'",
+			    path, strerror(errno));
+			break;
+		}
+		dbg("removed '%s'", path);
+	}
+	return 0;
+}
+
+static int delete_node(struct udevice *dev)
 {
-	static char name[100];
-	struct udevice *dev;
-	char *temp;
+	char filename[NAME_SIZE];
+	char linkname[NAME_SIZE];
+	char partitionname[NAME_SIZE];
+	int retval;
+	int i;
+	char *pos;
+	int len;
+
+	strfieldcpy(filename, udev_root);
+	strfieldcat(filename, dev->name);
 
-	dev = udevdb_get_dev(path);
-	if (dev != NULL) {
-		strcpy(name, dev->name);
-		goto exit;
+	info("removing device node '%s'", filename);
+	retval = unlink(filename);
+	if (errno == ENOENT)
+		retval = 0;
+	if (retval) {
+		dbg("unlink(%s) failed with error '%s'",
+			filename, strerror(errno));
+		return retval;
 	}
 
-	dbg("%s not found in database, falling back on default name", path);
-	temp = strrchr(path, '/');
-	if (temp == NULL)
-		return NULL;
-	strncpy(name, &temp[1], sizeof(name));
+	/* remove partition nodes */
+	if (dev->partitions > 0) {
+		info("removing partitions '%s[1-%i]'", filename, dev->partitions);
+		for (i = 1; i <= dev->partitions; i++) {
+			strfieldcpy(partitionname, filename);
+			strintcat(partitionname, i);
+			unlink(partitionname);
+		}
+	}
+
+	/* remove subdirectories */
+	if (strchr(dev->name, '/'))
+		delete_path(filename);
 
-exit:
-	dbg("name is %s", name);
-	return &name[0];
+	foreach_strpart(dev->symlink, " ", pos, len) {
+		strfieldcpymax(linkname, pos, len+1);
+		strfieldcpy(filename, udev_root);
+		strfieldcat(filename, linkname);
+
+		dbg("unlinking symlink '%s'", filename);
+		retval = unlink(filename);
+		if (errno == ENOENT)
+			retval = 0;
+		if (retval) {
+			dbg("unlink(%s) failed with error '%s'",
+				filename, strerror(errno));
+			return retval;
+		}
+		if (strchr(dev->symlink, '/')) {
+			delete_path(filename);
+		}
+	}
+
+	return retval;
 }
 
 /*
- * We also want to clean up any symlinks that were created in create_node()
+ * Look up the sysfs path in the database to see if we have named this device
+ * something different from the kernel name.  If we have, us it.  If not, use
+ * the default kernel name for lack of anything else to know to do.
  */
-static int delete_node(char *name)
+int udev_remove_device(char *path, char *subsystem)
 {
-	char filename[255];
-
-	strncpy(filename, udev_root, sizeof(filename));
-	strncat(filename, name, sizeof(filename));
+	struct udevice dev;
+	char *temp;
+	int retval;
 
-	dbg("unlinking %s", filename);
-	return unlink(filename);
-}
+	memset(&dev, 0x00, sizeof(dev));
 
-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;
+	retval = udevdb_get_dev(path, &dev);
+	if (retval != 0) {
+		dbg("'%s' not found in database, falling back on default name", path);
+		temp = strrchr(path, '/');
+		if (temp == NULL)
+			return -ENODEV;
+		strfieldcpy(dev.name, &temp[1]);
 	}
+	dbg("name='%s'", dev.name);
 
-	udevdb_delete_dev(device);
+	dev.type = get_device_type(path, subsystem);
+	dev_d_send(&dev, subsystem, path);
+	udevdb_delete_dev(path);
 
-	return delete_node(name);
+	if (dev.type == 'b' || dev.type == 'c')
+		retval = delete_node(&dev);
+	else if (dev.type == 'n')
+		retval = 0;
 
-exit:
 	return retval;
 }