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"
30 #include "terminal-util.h"
32 static int show_sysfs_one(
35 struct udev_list_entry **item,
46 _cleanup_udev_device_unref_ struct udev_device *d = NULL;
47 struct udev_list_entry *next, *lookahead;
48 const char *sn, *name, *sysfs, *subsystem, *sysname;
49 _cleanup_free_ char *k = NULL, *l = NULL;
52 sysfs = udev_list_entry_get_name(*item);
53 if (!path_startswith(sysfs, sub))
56 d = udev_device_new_from_syspath(udev, sysfs);
58 *item = udev_list_entry_get_next(*item);
62 sn = udev_device_get_property_value(d, "ID_SEAT");
66 /* Explicitly also check for tag 'seat' here */
67 if (!streq(seat, sn) || !udev_device_has_tag(d, "seat")) {
68 *item = udev_list_entry_get_next(*item);
72 is_master = udev_device_has_tag(d, "master-of-seat");
74 name = udev_device_get_sysattr_value(d, "name");
76 name = udev_device_get_sysattr_value(d, "id");
77 subsystem = udev_device_get_subsystem(d);
78 sysname = udev_device_get_sysname(d);
80 /* Look if there's more coming after this */
81 lookahead = next = udev_list_entry_get_next(*item);
83 const char *lookahead_sysfs;
85 lookahead_sysfs = udev_list_entry_get_name(lookahead);
87 if (path_startswith(lookahead_sysfs, sub) &&
88 !path_startswith(lookahead_sysfs, sysfs)) {
89 _cleanup_udev_device_unref_ struct udev_device *lookahead_d = NULL;
91 lookahead_d = udev_device_new_from_syspath(udev, lookahead_sysfs);
93 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 if (streq(seat, lookahead_sn) && udev_device_has_tag(lookahead_d, "seat"))
104 lookahead = udev_list_entry_get_next(lookahead);
107 k = ellipsize(sysfs, n_columns, 20);
111 printf("%s%s%s\n", prefix, draw_special_char(lookahead ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT), k);
115 is_master ? "[MASTER] " : "",
117 name ? " \"" : "", name ? name : "", name ? "\"" : "") < 0)
121 k = ellipsize(l, n_columns, 70);
125 printf("%s%s%s\n", prefix, lookahead ? draw_special_char(DRAW_TREE_VERTICAL) : " ", k);
129 _cleanup_free_ char *p = NULL;
131 p = strappend(prefix, lookahead ? draw_special_char(DRAW_TREE_VERTICAL) : " ");
135 show_sysfs_one(udev, seat, item, sysfs, p, n_columns - 2);
142 int show_sysfs(const char *seat, const char *prefix, unsigned n_columns) {
143 _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
144 _cleanup_udev_unref_ struct udev *udev = NULL;
145 struct udev_list_entry *first = NULL;
149 n_columns = columns();
161 e = udev_enumerate_new(udev);
165 if (!streq(seat, "seat0"))
166 r = udev_enumerate_add_match_tag(e, seat);
168 r = udev_enumerate_add_match_tag(e, "seat");
172 r = udev_enumerate_add_match_is_initialized(e);
176 r = udev_enumerate_scan_devices(e);
180 first = udev_enumerate_get_list_entry(e);
182 show_sysfs_one(udev, seat, &first, "/", prefix, n_columns);
184 printf("%s%s%s\n", prefix, draw_special_char(DRAW_TREE_RIGHT), "(none)");