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 Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
27 #include "sysfs-show.h"
28 #include "path-util.h"
30 static int show_sysfs_one(
33 struct udev_list_entry **item,
44 struct udev_list_entry *next, *lookahead;
45 struct udev_device *d;
46 const char *sn, *name, *sysfs, *subsystem, *sysname;
50 sysfs = udev_list_entry_get_name(*item);
51 if (!path_startswith(sysfs, sub))
54 d = udev_device_new_from_syspath(udev, sysfs);
56 *item = udev_list_entry_get_next(*item);
60 sn = udev_device_get_property_value(d, "ID_SEAT");
64 /* Explicitly also check for tag 'seat' here */
65 if (!streq(seat, sn) || !udev_device_has_tag(d, "seat")) {
67 *item = udev_list_entry_get_next(*item);
71 is_master = udev_device_has_tag(d, "master-of-seat");
73 name = udev_device_get_sysattr_value(d, "name");
75 name = udev_device_get_sysattr_value(d, "id");
76 subsystem = udev_device_get_subsystem(d);
77 sysname = udev_device_get_sysname(d);
79 /* Look if there's more coming after this */
80 lookahead = next = udev_list_entry_get_next(*item);
82 const char *lookahead_sysfs;
84 lookahead_sysfs = udev_list_entry_get_name(lookahead);
86 if (path_startswith(lookahead_sysfs, sub) &&
87 !path_startswith(lookahead_sysfs, sysfs)) {
88 struct udev_device *lookahead_d;
90 lookahead_d = udev_device_new_from_syspath(udev, lookahead_sysfs);
92 const char *lookahead_sn;
95 lookahead_sn = udev_device_get_property_value(d, "ID_SEAT");
96 if (isempty(lookahead_sn))
97 lookahead_sn = "seat0";
99 found = streq(seat, lookahead_sn) && udev_device_has_tag(lookahead_d, "seat");
100 udev_device_unref(lookahead_d);
107 lookahead = udev_list_entry_get_next(lookahead);
110 k = ellipsize(sysfs, n_columns, 20);
111 printf("%s%s%s\n", prefix, draw_special_char(lookahead ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT),
117 is_master ? "[MASTER] " : "",
119 name ? " \"" : "", name ? name : "", name ? "\"" : "") < 0) {
120 udev_device_unref(d);
124 k = ellipsize(l, n_columns, 70);
125 printf("%s%s%s\n", prefix, lookahead ? draw_special_char(DRAW_TREE_VERT) : " ",
134 p = strappend(prefix, lookahead ? draw_special_char(DRAW_TREE_VERT) : " ");
135 show_sysfs_one(udev, seat, item, sysfs, p ? p : prefix, n_columns - 2);
139 udev_device_unref(d);
145 int show_sysfs(const char *seat, const char *prefix, unsigned n_columns) {
147 struct udev_list_entry *first = NULL;
148 struct udev_enumerate *e;
152 n_columns = columns();
164 e = udev_enumerate_new(udev);
170 if (!streq(seat, "seat0"))
171 r = udev_enumerate_add_match_tag(e, seat);
173 r = udev_enumerate_add_match_tag(e, "seat");
178 r = udev_enumerate_scan_devices(e);
182 first = udev_enumerate_get_list_entry(e);
184 show_sysfs_one(udev, seat, &first, "/", prefix, n_columns);
188 udev_enumerate_unref(e);