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"
29 #include "udev-util.h"
31 static int show_sysfs_one(
34 struct udev_list_entry **item,
45 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
46 struct udev_list_entry *next, *lookahead;
47 const char *sn, *name, *sysfs, *subsystem, *sysname;
48 _cleanup_free_ char *k = NULL, *l = NULL;
51 sysfs = udev_list_entry_get_name(*item);
52 if (!path_startswith(sysfs, sub))
55 d = udev_device_new_from_syspath(udev, sysfs);
57 *item = udev_list_entry_get_next(*item);
61 sn = udev_device_get_property_value(d, "ID_SEAT");
65 /* Explicitly also check for tag 'seat' here */
66 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 _cleanup_udev_device_unref_ struct udev_device *lookahead_d = NULL;
90 lookahead_d = udev_device_new_from_syspath(udev, lookahead_sysfs);
92 const char *lookahead_sn;
94 lookahead_sn = udev_device_get_property_value(d, "ID_SEAT");
95 if (isempty(lookahead_sn))
96 lookahead_sn = "seat0";
98 if (streq(seat, lookahead_sn) && udev_device_has_tag(lookahead_d, "seat"))
103 lookahead = udev_list_entry_get_next(lookahead);
106 k = ellipsize(sysfs, n_columns, 20);
110 printf("%s%s%s\n", prefix, draw_special_char(lookahead ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT), k);
114 is_master ? "[MASTER] " : "",
116 name ? " \"" : "", name ? name : "", name ? "\"" : "") < 0)
120 k = ellipsize(l, n_columns, 70);
124 printf("%s%s%s\n", prefix, lookahead ? draw_special_char(DRAW_TREE_VERTICAL) : " ", k);
128 _cleanup_free_ char *p = NULL;
130 p = strappend(prefix, lookahead ? draw_special_char(DRAW_TREE_VERTICAL) : " ");
134 show_sysfs_one(udev, seat, item, sysfs, p, n_columns - 2);
141 int show_sysfs(const char *seat, const char *prefix, unsigned n_columns) {
142 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
143 _cleanup_udev_unref_ struct udev *udev = NULL;
144 struct udev_list_entry *first = NULL;
148 n_columns = columns();
160 e = udev_enumerate_new(udev);
164 if (!streq(seat, "seat0"))
165 r = udev_enumerate_add_match_tag(e, seat);
167 r = udev_enumerate_add_match_tag(e, "seat");
171 r = udev_enumerate_add_match_is_initialized(e);
175 r = udev_enumerate_scan_devices(e);
179 first = udev_enumerate_get_list_entry(e);
181 show_sysfs_one(udev, seat, &first, "/", prefix, n_columns);
183 printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_RIGHT), "(none)");