1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 systemd 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
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
27 #include "sysfs-show.h"
29 static int show_sysfs_one(
32 struct udev_list_entry **item,
43 struct udev_list_entry *next, *lookahead;
44 struct udev_device *d;
45 const char *sn, *name, *sysfs, *subsystem, *sysname;
48 sysfs = udev_list_entry_get_name(*item);
49 if (!path_startswith(sysfs, sub))
52 d = udev_device_new_from_syspath(udev, sysfs);
54 *item = udev_list_entry_get_next(*item);
58 sn = udev_device_get_property_value(d, "ID_SEAT");
62 /* fixme, also check for tag 'seat' here */
63 if (!streq(seat, sn) || !udev_device_has_tag(d, "seat")) {
65 *item = udev_list_entry_get_next(*item);
69 name = udev_device_get_sysattr_value(d, "name");
71 name = udev_device_get_sysattr_value(d, "id");
72 subsystem = udev_device_get_subsystem(d);
73 sysname = udev_device_get_sysname(d);
75 /* Look if there's more coming after this */
76 lookahead = next = udev_list_entry_get_next(*item);
78 const char *lookahead_sysfs;
80 lookahead_sysfs = udev_list_entry_get_name(lookahead);
82 if (path_startswith(lookahead_sysfs, sub) &&
83 !path_startswith(lookahead_sysfs, sysfs)) {
84 struct udev_device *lookahead_d;
86 lookahead_d = udev_device_new_from_syspath(udev, lookahead_sysfs);
88 const char *lookahead_sn;
91 lookahead_sn = udev_device_get_property_value(d, "ID_SEAT");
92 if (isempty(lookahead_sn))
93 lookahead_sn = "seat0";
95 found = streq(seat, lookahead_sn) && udev_device_has_tag(lookahead_d, "seat");
96 udev_device_unref(lookahead_d);
103 lookahead = udev_list_entry_get_next(lookahead);
106 k = ellipsize(sysfs, n_columns, 20);
107 printf("%s%s %s\n", prefix, lookahead ? "\342\224\234" : "\342\224\224", k ? k : sysfs);
113 name ? " \"" : "", name ? name : "", name ? "\"" : "") < 0) {
114 udev_device_unref(d);
118 k = ellipsize(l, n_columns, 70);
119 printf("%s%s %s\n", prefix, lookahead ? "\342\224\202" : " ", k ? k : l);
127 p = strappend(prefix, lookahead ? "\342\224\202 " : " ");
128 show_sysfs_one(udev, seat, item, sysfs, p ? p : prefix, n_columns - 2);
132 udev_device_unref(d);
138 int show_sysfs(const char *seat, const char *prefix, unsigned n_columns) {
140 struct udev_list_entry *first = NULL;
141 struct udev_enumerate *e;
145 n_columns = columns();
157 e = udev_enumerate_new(udev);
163 if (!streq(seat, "seat0"))
164 r = udev_enumerate_add_match_tag(e, seat);
166 r = udev_enumerate_add_match_tag(e, "seat");
168 r = udev_enumerate_scan_devices(e);
172 first = udev_enumerate_get_list_entry(e);
174 show_sysfs_one(udev, seat, &first, "/", prefix, n_columns);
178 udev_enumerate_unref(e);