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Commit | Line | Data |
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ea733a2f GKH |
1 | /* |
2 | * udev-remove.c | |
3 | * | |
4 | * Userspace devfs | |
5 | * | |
6 | * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com> | |
7 | * | |
8 | * | |
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. | |
12 | * | |
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. | |
17 | * | |
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. | |
21 | * | |
22 | */ | |
23 | ||
24 | #include <stdlib.h> | |
25 | #include <string.h> | |
26 | #include <stdio.h> | |
27 | #include <fcntl.h> | |
28 | #include <unistd.h> | |
29 | #include <errno.h> | |
30 | ||
31 | #include "udev.h" | |
32 | #include "udev_version.h" | |
7ac0feeb | 33 | #include "udev_dbus.h" |
54988802 | 34 | #include "logging.h" |
ea733a2f | 35 | #include "namedev.h" |
8e41d35d | 36 | #include "udevdb.h" |
ea733a2f | 37 | |
3d150dfb | 38 | static int delete_path(char *path) |
ea733a2f | 39 | { |
3d150dfb KS |
40 | char *pos; |
41 | int retval; | |
ea733a2f | 42 | |
3d150dfb KS |
43 | pos = strrchr(path, '/'); |
44 | while (1) { | |
45 | *pos = '\0'; | |
46 | pos = strrchr(path, '/'); | |
47 | ||
48 | /* don't remove the last one */ | |
49 | if ((pos == path) || (pos == NULL)) | |
50 | break; | |
51 | ||
52 | /* remove if empty */ | |
53 | retval = rmdir(path); | |
54 | if (retval) { | |
55 | if (errno == ENOTEMPTY) | |
56 | return 0; | |
57 | dbg("rmdir(%s) failed with error '%s'", | |
58 | path, strerror(errno)); | |
59 | break; | |
60 | } | |
61 | dbg("removed '%s'", path); | |
5840bc63 | 62 | } |
3d150dfb | 63 | return 0; |
ea733a2f GKH |
64 | } |
65 | ||
3d150dfb | 66 | static int delete_node(struct udevice *dev) |
ea733a2f GKH |
67 | { |
68 | char filename[255]; | |
50e5de03 | 69 | char partitionname[255]; |
4763256c KS |
70 | char *symlinks; |
71 | char *linkname; | |
218eae87 | 72 | int retval; |
50e5de03 | 73 | int i; |
ea733a2f | 74 | |
c056c514 | 75 | strncpy(filename, udev_root, sizeof(filename)); |
3d150dfb | 76 | strncat(filename, dev->name, sizeof(filename)); |
ea733a2f | 77 | |
54988802 | 78 | info("removing device node '%s'", filename); |
218eae87 KS |
79 | retval = unlink(filename); |
80 | if (retval) { | |
81 | dbg("unlink(%s) failed with error '%s'", | |
82 | filename, strerror(errno)); | |
83 | return retval; | |
84 | } | |
85 | ||
50e5de03 KS |
86 | /* remove partition nodes */ |
87 | if (dev->partitions > 0) { | |
88 | info("removing partitions '%s[1-%i]'", filename, dev->partitions); | |
89 | for (i = 1; i <= dev->partitions; i++) { | |
90 | sprintf(partitionname, "%s%i", filename, i); | |
91 | unlink(partitionname); | |
92 | } | |
93 | } | |
94 | ||
218eae87 | 95 | /* remove subdirectories */ |
3d150dfb KS |
96 | if (strchr(dev->name, '/')) |
97 | delete_path(filename); | |
98 | ||
50e5de03 | 99 | if (dev->symlink[0] != '\0') { |
4763256c KS |
100 | symlinks = dev->symlink; |
101 | while (1) { | |
102 | linkname = strsep(&symlinks, " "); | |
103 | if (linkname == NULL) | |
104 | break; | |
105 | ||
106 | strncpy(filename, udev_root, sizeof(filename)); | |
107 | strncat(filename, linkname, sizeof(filename)); | |
108 | ||
109 | dbg("unlinking symlink '%s'", filename); | |
110 | retval = unlink(filename); | |
111 | if (retval) { | |
112 | dbg("unlink(%s) failed with error '%s'", | |
113 | filename, strerror(errno)); | |
114 | return retval; | |
115 | } | |
116 | if (strchr(dev->symlink, '/')) { | |
117 | delete_path(filename); | |
118 | } | |
218eae87 KS |
119 | } |
120 | } | |
3d150dfb | 121 | |
218eae87 | 122 | return retval; |
ea733a2f GKH |
123 | } |
124 | ||
3d150dfb KS |
125 | /* |
126 | * Look up the sysfs path in the database to see if we have named this device | |
127 | * something different from the kernel name. If we have, us it. If not, use | |
128 | * the default kernel name for lack of anything else to know to do. | |
129 | */ | |
130 | int udev_remove_device(char *path, char *subsystem) | |
ea733a2f | 131 | { |
808423c9 | 132 | struct udevice dev; |
3d150dfb | 133 | char *temp; |
a56ef382 KS |
134 | int retval; |
135 | ||
808423c9 | 136 | memset(&dev, 0, sizeof(dev)); |
ea733a2f | 137 | |
808423c9 | 138 | retval = udevdb_get_dev(path, &dev); |
a56ef382 | 139 | if (retval) { |
3d150dfb KS |
140 | dbg("'%s' not found in database, falling back on default name", path); |
141 | temp = strrchr(path, '/'); | |
142 | if (temp == NULL) | |
143 | return -ENODEV; | |
808423c9 | 144 | strncpy(dev.name, &temp[1], sizeof(dev.name)); |
ea733a2f GKH |
145 | } |
146 | ||
808423c9 | 147 | dbg("name is '%s'", dev.name); |
3d150dfb | 148 | udevdb_delete_dev(path); |
5aebfbcb | 149 | |
808423c9 | 150 | sysbus_send_remove(dev.name, path); |
7ac0feeb | 151 | |
808423c9 | 152 | retval = delete_node(&dev); |
a56ef382 | 153 | return retval; |
ea733a2f | 154 | } |