-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
/***
- 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 Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <errno.h>
#include <string.h>
+
+#if 0 /// elogind needs the systems udev header
+#include "libudev.h"
+#else
#include <libudev.h>
+#endif // 0
-#include "util.h"
-#include "sysfs-show.h"
+#include "alloc-util.h"
+#include "locale-util.h"
#include "path-util.h"
+#include "string-util.h"
+#include "sysfs-show.h"
+#include "terminal-util.h"
#include "udev-util.h"
+#include "util.h"
static int show_sysfs_one(
struct udev *udev,
struct udev_list_entry **item,
const char *sub,
const char *prefix,
- unsigned n_columns) {
+ unsigned n_columns,
+ OutputFlags flags) {
+
+ size_t max_width;
assert(udev);
assert(seat);
assert(item);
assert(prefix);
+ if (flags & OUTPUT_FULL_WIDTH)
+ max_width = (size_t) -1;
+ else if (n_columns < 10)
+ max_width = 10;
+ else
+ max_width = n_columns;
+
while (*item) {
+ _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
struct udev_list_entry *next, *lookahead;
- struct udev_device *d;
const char *sn, *name, *sysfs, *subsystem, *sysname;
- char *l, *k;
+ _cleanup_free_ char *k = NULL, *l = NULL;
bool is_master;
sysfs = udev_list_entry_get_name(*item);
/* Explicitly 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;
}
if (path_startswith(lookahead_sysfs, sub) &&
!path_startswith(lookahead_sysfs, sysfs)) {
- struct udev_device *lookahead_d;
+ _cleanup_(udev_device_unrefp) struct udev_device *lookahead_d = NULL;
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)
+ if (streq(seat, lookahead_sn) && udev_device_has_tag(lookahead_d, "seat"))
break;
}
}
lookahead = udev_list_entry_get_next(lookahead);
}
- k = ellipsize(sysfs, n_columns, 20);
- printf("%s%s%s\n", prefix, draw_special_char(lookahead ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT),
- k ? k : sysfs);
- free(k);
+ k = ellipsize(sysfs, max_width, 20);
+ if (!k)
+ return -ENOMEM;
+
+ printf("%s%s%s\n", prefix, special_glyph(lookahead ? TREE_BRANCH : TREE_RIGHT), k);
if (asprintf(&l,
"%s%s:%s%s%s%s",
is_master ? "[MASTER] " : "",
subsystem, sysname,
- name ? " \"" : "", name ? name : "", name ? "\"" : "") < 0) {
- udev_device_unref(d);
+ name ? " \"" : "", strempty(name), name ? "\"" : "") < 0)
return -ENOMEM;
- }
- k = ellipsize(l, n_columns, 70);
- printf("%s%s%s\n", prefix, lookahead ? draw_special_char(DRAW_TREE_VERT) : " ",
- k ? k : l);
free(k);
- free(l);
+ k = ellipsize(l, max_width, 70);
+ if (!k)
+ return -ENOMEM;
+
+ printf("%s%s%s\n", prefix, lookahead ? special_glyph(TREE_VERTICAL) : " ", k);
*item = next;
if (*item) {
- char *p;
+ _cleanup_free_ char *p = NULL;
- p = strappend(prefix, lookahead ? draw_special_char(DRAW_TREE_VERT) : " ");
- show_sysfs_one(udev, seat, item, sysfs, p ? p : prefix, n_columns - 2);
- free(p);
- }
+ p = strappend(prefix, lookahead ? special_glyph(TREE_VERTICAL) : " ");
+ if (!p)
+ return -ENOMEM;
- udev_device_unref(d);
+ show_sysfs_one(udev, seat, item, sysfs, p,
+ n_columns == (unsigned) -1 || n_columns < 2 ? n_columns : n_columns - 2,
+ flags);
+ }
}
return 0;
}
-int show_sysfs(const char *seat, const char *prefix, unsigned n_columns) {
- _cleanup_udev_unref_ struct udev *udev;
- _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
+int show_sysfs(const char *seat, const char *prefix, unsigned n_columns, OutputFlags flags) {
+ _cleanup_(udev_enumerate_unrefp) struct udev_enumerate *e = NULL;
+ _cleanup_(udev_unrefp) struct udev *udev = NULL;
struct udev_list_entry *first = NULL;
int r;
if (n_columns <= 0)
n_columns = columns();
- if (!prefix)
- prefix = "";
+ prefix = strempty(prefix);
if (isempty(seat))
seat = "seat0";
r = udev_enumerate_add_match_tag(e, seat);
else
r = udev_enumerate_add_match_tag(e, "seat");
+ if (r < 0)
+ return r;
+ r = udev_enumerate_add_match_is_initialized(e);
if (r < 0)
return r;
first = udev_enumerate_get_list_entry(e);
if (first)
- show_sysfs_one(udev, seat, &first, "/", prefix, n_columns);
+ show_sysfs_one(udev, seat, &first, "/", prefix, n_columns, flags);
+ else
+ printf("%s%s%s\n", prefix, special_glyph(TREE_RIGHT), "(none)");
return r;
}
~ianmdlvl / elogind.git / blobdiff