6 * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation version 2 of the License.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 675 Mass Ave, Cambridge, MA 02139, USA.
34 #include "udev_utils.h"
35 #include "udev_version.h"
40 static int delete_path(const char *path)
45 pos = strrchr(path, '/');
48 pos = strrchr(path, '/');
50 /* don't remove the last one */
51 if ((pos == path) || (pos == NULL))
59 if (errno == ENOTEMPTY)
61 dbg("rmdir(%s) failed with error '%s'",
62 path, strerror(errno));
65 dbg("removed '%s'", path);
70 static int delete_node(struct udevice *udev)
72 char filename[NAME_SIZE];
73 char partitionname[NAME_SIZE];
81 snprintf(filename, NAME_SIZE, "%s/%s", udev_root, udev->name);
82 filename[NAME_SIZE-1] = '\0';
84 dbg("checking major/minor of device node '%s'", filename);
85 if (stat(filename, &stats) != 0)
88 if (udev->devt && stats.st_rdev != udev->devt) {
89 info("device node '%s' points to a different device, skip removal", filename);
93 info("removing device node '%s'", filename);
94 retval = unlink_secure(filename);
98 /* remove all_partitions nodes */
99 num = udev->partitions;
101 info("removing all_partitions '%s[1-%i]'", filename, num);
103 info("garbage from udev database, skip all_partitions removal");
106 for (i = 1; i <= num; i++) {
107 strfieldcpy(partitionname, filename);
108 strintcat(partitionname, i);
109 unlink_secure(partitionname);
113 /* remove subdirectories */
114 if (strchr(udev->name, '/'))
115 delete_path(filename);
117 foreach_strpart(udev->symlink, " ", pos, len) {
118 char linkname[NAME_SIZE];
120 strfieldcpymax(linkname, pos, len+1);
121 snprintf(filename, NAME_SIZE, "%s/%s", udev_root, linkname);
122 filename[NAME_SIZE-1] = '\0';
124 dbg("unlinking symlink '%s'", filename);
125 retval = unlink(filename);
129 dbg("unlink(%s) failed with error '%s'",
130 filename, strerror(errno));
133 if (strchr(udev->symlink, '/')) {
134 delete_path(filename);
142 * look up the sysfs path in the database to get the node name to remove
143 * If we can't find it, use kernel name for lack of anything else to know to do
145 int udev_remove_device(struct udevice *udev)
150 if (udev->type != BLOCK && udev->type != CLASS)
153 retval = udev_db_get_device_by_devpath(udev, udev->devpath);
155 /* fall back to kernel name */
156 temp = strrchr(udev->devpath, '/');
159 strfieldcpy(udev->name, &temp[1]);
160 dbg("'%s' not found in database, falling back on default name", udev->name);
163 if (udev->ignore_remove) {
164 dbg("remove event for '%s' requested to be ignored by rule", udev->name);
168 dbg("remove name='%s'", udev->name);
169 udev_db_delete_device(udev);
171 /* use full path to the environment */
172 snprintf(udev->devname, NAME_SIZE, "%s/%s", udev_root, udev->name);
174 return delete_node(udev);