+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-#include <string.h>
-#include <libudev.h>
-
-#include "util.h"
-#include "sysfs-show.h"
-
-static int show_sysfs_one(
- struct udev *udev,
- const char *seat,
- struct udev_list_entry **item,
- const char *sub,
- const char *prefix,
- unsigned n_columns) {
-
- assert(udev);
- assert(seat);
- assert(item);
- assert(prefix);
-
- while (*item) {
- struct udev_list_entry *next, *lookahead;
- struct udev_device *d;
- const char *sn, *name, *sysfs, *subsystem, *sysname;
- char *l, *k;
-
- sysfs = udev_list_entry_get_name(*item);
- if (!path_startswith(sysfs, sub))
- return 0;
-
- d = udev_device_new_from_syspath(udev, sysfs);
- if (!d) {
- *item = udev_list_entry_get_next(*item);
- continue;
- }
-
- sn = udev_device_get_property_value(d, "ID_SEAT");
- if (isempty(sn))
- sn = "seat0";
-
- /* fixme, also check for tag 'seat' here */
- if (!streq(seat, sn) || !udev_device_has_tag(d, "seat")) {
- udev_device_unref(d);
- *item = udev_list_entry_get_next(*item);
- continue;
- }
-
- name = udev_device_get_sysattr_value(d, "name");
- if (!name)
- name = udev_device_get_sysattr_value(d, "id");
- subsystem = udev_device_get_subsystem(d);
- sysname = udev_device_get_sysname(d);
-
- /* Look if there's more coming after this */
- lookahead = next = udev_list_entry_get_next(*item);
- while (lookahead) {
- const char *lookahead_sysfs;
-
- lookahead_sysfs = udev_list_entry_get_name(lookahead);
-
- if (path_startswith(lookahead_sysfs, sub) &&
- !path_startswith(lookahead_sysfs, sysfs)) {
- struct udev_device *lookahead_d;
-
- lookahead_d = udev_device_new_from_syspath(udev, lookahead_sysfs);
- if (lookahead_d) {
- const char *lookahead_sn;
- bool found;
-
- lookahead_sn = udev_device_get_property_value(d, "ID_SEAT");
- if (isempty(lookahead_sn))
- lookahead_sn = "seat0";
-
- found = streq(seat, lookahead_sn) && udev_device_has_tag(lookahead_d, "seat");
- udev_device_unref(lookahead_d);
-
- if (found)
- break;
- }
- }
-
- lookahead = udev_list_entry_get_next(lookahead);
- }
-
- k = ellipsize(sysfs, n_columns, 20);
- printf("%s%s %s\n", prefix, lookahead ? "\342\224\234" : "\342\224\224", k ? k : sysfs);
- free(k);
-
- if (asprintf(&l,
- "(%s:%s)%s%s%s",
- subsystem, sysname,
- name ? " \"" : "", name ? name : "", name ? "\"" : "") < 0) {
- udev_device_unref(d);
- return -ENOMEM;
- }
-
- k = ellipsize(l, n_columns, 70);
- printf("%s%s %s\n", prefix, lookahead ? "\342\224\202" : " ", k ? k : l);
- free(k);
- free(l);
-
- *item = next;
- if (*item) {
- char *p;
-
- p = strappend(prefix, lookahead ? "\342\224\202 " : " ");
- show_sysfs_one(udev, seat, item, sysfs, p ? p : prefix, n_columns - 2);
- free(p);
- }
-
- udev_device_unref(d);
- }
-
- return 0;
-}
-
-int show_sysfs(const char *seat, const char *prefix, unsigned n_columns) {
- struct udev *udev;
- struct udev_list_entry *first = NULL;
- struct udev_enumerate *e;
- int r;
-
- if (n_columns <= 0)
- n_columns = columns();
-
- if (!prefix)
- prefix = "";
-
- if (isempty(seat))
- seat = "seat0";
-
- udev = udev_new();
- if (!udev)
- return -ENOMEM;
-
- e = udev_enumerate_new(udev);
- if (!e) {
- r = -ENOMEM;
- goto finish;
- }
-
- if (!streq(seat, "seat0"))
- r = udev_enumerate_add_match_tag(e, seat);
- else
- r = udev_enumerate_add_match_tag(e, "seat");
-
- if (r < 0)
- goto finish;
-
- r = udev_enumerate_scan_devices(e);
- if (r < 0)
- goto finish;
-
- first = udev_enumerate_get_list_entry(e);
- if (first)
- show_sysfs_one(udev, seat, &first, "/", prefix, n_columns);
-
-finish:
- if (e)
- udev_enumerate_unref(e);
-
- if (udev)
- udev_unref(udev);
-
- return r;
-}
~ianmdlvl / elogind.git / blobdiff