Adding upstream version 241.upstream/241upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 788 insertions, 0 deletions

diff --git a/src/locale/keymap-util.c b/src/locale/keymap-util.c
new file mode 100644
index 0000000..6b6b32a
--- /dev/null
+++ b/src/locale/keymap-util.c
@@ -0,0 +1,788 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <errno.h>
+#include <stdio_ext.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "bus-util.h"
+#include "def.h"
+#include "env-file.h"
+#include "env-file-label.h"
+#include "env-util.h"
+#include "fd-util.h"
+#include "fileio-label.h"
+#include "fileio.h"
+#include "keymap-util.h"
+#include "locale-util.h"
+#include "macro.h"
+#include "mkdir.h"
+#include "string-util.h"
+#include "strv.h"
+#include "tmpfile-util.h"
+
+static bool startswith_comma(const char *s, const char *prefix) {
+        s = startswith(s, prefix);
+        if (!s)
+                return false;
+
+        return IN_SET(*s, ',', '\0');
+}
+
+static const char* strnulldash(const char *s) {
+        return isempty(s) || streq(s, "-") ? NULL : s;
+}
+
+static const char* systemd_kbd_model_map(void) {
+        const char* s;
+
+        s = getenv("SYSTEMD_KBD_MODEL_MAP");
+        if (s)
+                return s;
+
+        return SYSTEMD_KBD_MODEL_MAP;
+}
+
+static const char* systemd_language_fallback_map(void) {
+        const char* s;
+
+        s = getenv("SYSTEMD_LANGUAGE_FALLBACK_MAP");
+        if (s)
+                return s;
+
+        return SYSTEMD_LANGUAGE_FALLBACK_MAP;
+}
+
+static void context_free_x11(Context *c) {
+        c->x11_layout = mfree(c->x11_layout);
+        c->x11_options = mfree(c->x11_options);
+        c->x11_model = mfree(c->x11_model);
+        c->x11_variant = mfree(c->x11_variant);
+}
+
+static void context_free_vconsole(Context *c) {
+        c->vc_keymap = mfree(c->vc_keymap);
+        c->vc_keymap_toggle = mfree(c->vc_keymap_toggle);
+}
+
+static void context_free_locale(Context *c) {
+        int p;
+
+        for (p = 0; p < _VARIABLE_LC_MAX; p++)
+                c->locale[p] = mfree(c->locale[p]);
+}
+
+void context_clear(Context *c) {
+        context_free_locale(c);
+        context_free_x11(c);
+        context_free_vconsole(c);
+
+        sd_bus_message_unref(c->locale_cache);
+        sd_bus_message_unref(c->x11_cache);
+        sd_bus_message_unref(c->vc_cache);
+
+        bus_verify_polkit_async_registry_free(c->polkit_registry);
+};
+
+void locale_simplify(char *locale[_VARIABLE_LC_MAX]) {
+        int p;
+
+        for (p = VARIABLE_LANG+1; p < _VARIABLE_LC_MAX; p++)
+                if (isempty(locale[p]) || streq_ptr(locale[VARIABLE_LANG], locale[p]))
+                        locale[p] = mfree(locale[p]);
+}
+
+int locale_read_data(Context *c, sd_bus_message *m) {
+        struct stat st;
+        int r;
+
+        /* Do not try to re-read the file within single bus operation. */
+        if (m) {
+                if (m == c->locale_cache)
+                        return 0;
+
+                sd_bus_message_unref(c->locale_cache);
+                c->locale_cache = sd_bus_message_ref(m);
+        }
+
+        r = stat("/etc/locale.conf", &st);
+        if (r < 0 && errno != ENOENT)
+                return -errno;
+
+        if (r >= 0) {
+                usec_t t;
+
+                /* If mtime is not changed, then we do not need to re-read the file. */
+                t = timespec_load(&st.st_mtim);
+                if (c->locale_mtime != USEC_INFINITY && t == c->locale_mtime)
+                        return 0;
+
+                c->locale_mtime = t;
+                context_free_locale(c);
+
+                r = parse_env_file(NULL, "/etc/locale.conf",
+                                   "LANG",              &c->locale[VARIABLE_LANG],
+                                   "LANGUAGE",          &c->locale[VARIABLE_LANGUAGE],
+                                   "LC_CTYPE",          &c->locale[VARIABLE_LC_CTYPE],
+                                   "LC_NUMERIC",        &c->locale[VARIABLE_LC_NUMERIC],
+                                   "LC_TIME",           &c->locale[VARIABLE_LC_TIME],
+                                   "LC_COLLATE",        &c->locale[VARIABLE_LC_COLLATE],
+                                   "LC_MONETARY",       &c->locale[VARIABLE_LC_MONETARY],
+                                   "LC_MESSAGES",       &c->locale[VARIABLE_LC_MESSAGES],
+                                   "LC_PAPER",          &c->locale[VARIABLE_LC_PAPER],
+                                   "LC_NAME",           &c->locale[VARIABLE_LC_NAME],
+                                   "LC_ADDRESS",        &c->locale[VARIABLE_LC_ADDRESS],
+                                   "LC_TELEPHONE",      &c->locale[VARIABLE_LC_TELEPHONE],
+                                   "LC_MEASUREMENT",    &c->locale[VARIABLE_LC_MEASUREMENT],
+                                   "LC_IDENTIFICATION", &c->locale[VARIABLE_LC_IDENTIFICATION]);
+                if (r < 0)
+                        return r;
+        } else {
+                int p;
+
+                c->locale_mtime = USEC_INFINITY;
+                context_free_locale(c);
+
+                /* Fill in what we got passed from systemd. */
+                for (p = 0; p < _VARIABLE_LC_MAX; p++) {
+                        const char *name;
+
+                        name = locale_variable_to_string(p);
+                        assert(name);
+
+                        r = free_and_strdup(&c->locale[p], empty_to_null(getenv(name)));
+                        if (r < 0)
+                                return r;
+                }
+        }
+
+        locale_simplify(c->locale);
+        return 0;
+}
+
+int vconsole_read_data(Context *c, sd_bus_message *m) {
+        struct stat st;
+        usec_t t;
+        int r;
+
+        /* Do not try to re-read the file within single bus operation. */
+        if (m) {
+                if (m == c->vc_cache)
+                        return 0;
+
+                sd_bus_message_unref(c->vc_cache);
+                c->vc_cache = sd_bus_message_ref(m);
+        }
+
+        if (stat("/etc/vconsole.conf", &st) < 0) {
+                if (errno != ENOENT)
+                        return -errno;
+
+                c->vc_mtime = USEC_INFINITY;
+                context_free_vconsole(c);
+                return 0;
+        }
+
+        /* If mtime is not changed, then we do not need to re-read */
+        t = timespec_load(&st.st_mtim);
+        if (c->vc_mtime != USEC_INFINITY && t == c->vc_mtime)
+                return 0;
+
+        c->vc_mtime = t;
+        context_free_vconsole(c);
+
+        r = parse_env_file(NULL, "/etc/vconsole.conf",
+                           "KEYMAP",        &c->vc_keymap,
+                           "KEYMAP_TOGGLE", &c->vc_keymap_toggle);
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
+int x11_read_data(Context *c, sd_bus_message *m) {
+        _cleanup_fclose_ FILE *f = NULL;
+        bool in_section = false;
+        struct stat st;
+        usec_t t;
+        int r;
+
+        /* Do not try to re-read the file within single bus operation. */
+        if (m) {
+                if (m == c->x11_cache)
+                        return 0;
+
+                sd_bus_message_unref(c->x11_cache);
+                c->x11_cache = sd_bus_message_ref(m);
+        }
+
+        if (stat("/etc/X11/xorg.conf.d/00-keyboard.conf", &st) < 0) {
+                if (errno != ENOENT)
+                        return -errno;
+
+                c->x11_mtime = USEC_INFINITY;
+                context_free_x11(c);
+                return 0;
+        }
+
+        /* If mtime is not changed, then we do not need to re-read */
+        t = timespec_load(&st.st_mtim);
+        if (c->x11_mtime != USEC_INFINITY && t == c->x11_mtime)
+                return 0;
+
+        c->x11_mtime = t;
+        context_free_x11(c);
+
+        f = fopen("/etc/X11/xorg.conf.d/00-keyboard.conf", "re");
+        if (!f)
+                return -errno;
+
+        for (;;) {
+                _cleanup_free_ char *line = NULL;
+                char *l;
+
+                r = read_line(f, LONG_LINE_MAX, &line);
+                if (r < 0)
+                        return r;
+                if (r == 0)
+                        break;
+
+                l = strstrip(line);
+                if (IN_SET(l[0], 0, '#'))
+                        continue;
+
+                if (in_section && first_word(l, "Option")) {
+                        _cleanup_strv_free_ char **a = NULL;
+
+                        r = strv_split_extract(&a, l, WHITESPACE, EXTRACT_QUOTES);
+                        if (r < 0)
+                                return r;
+
+                        if (strv_length(a) == 3) {
+                                char **p = NULL;
+
+                                if (streq(a[1], "XkbLayout"))
+                                        p = &c->x11_layout;
+                                else if (streq(a[1], "XkbModel"))
+                                        p = &c->x11_model;
+                                else if (streq(a[1], "XkbVariant"))
+                                        p = &c->x11_variant;
+                                else if (streq(a[1], "XkbOptions"))
+                                        p = &c->x11_options;
+
+                                if (p) {
+                                        free_and_replace(*p, a[2]);
+                                }
+                        }
+
+                } else if (!in_section && first_word(l, "Section")) {
+                        _cleanup_strv_free_ char **a = NULL;
+
+                        r = strv_split_extract(&a, l, WHITESPACE, EXTRACT_QUOTES);
+                        if (r < 0)
+                                return -ENOMEM;
+
+                        if (strv_length(a) == 2 && streq(a[1], "InputClass"))
+                                in_section = true;
+
+                } else if (in_section && first_word(l, "EndSection"))
+                        in_section = false;
+        }
+
+        return 0;
+}
+
+int locale_write_data(Context *c, char ***settings) {
+        _cleanup_strv_free_ char **l = NULL;
+        struct stat st;
+        int r, p;
+
+        /* Set values will be returned as strv in *settings on success. */
+
+        for (p = 0; p < _VARIABLE_LC_MAX; p++) {
+                _cleanup_free_ char *t = NULL;
+                char **u;
+                const char *name;
+
+                name = locale_variable_to_string(p);
+                assert(name);
+
+                if (isempty(c->locale[p]))
+                        continue;
+
+                if (asprintf(&t, "%s=%s", name, c->locale[p]) < 0)
+                        return -ENOMEM;
+
+                u = strv_env_set(l, t);
+                if (!u)
+                        return -ENOMEM;
+
+                strv_free_and_replace(l, u);
+        }
+
+        if (strv_isempty(l)) {
+                if (unlink("/etc/locale.conf") < 0)
+                        return errno == ENOENT ? 0 : -errno;
+
+                c->locale_mtime = USEC_INFINITY;
+                return 0;
+        }
+
+        r = write_env_file_label("/etc/locale.conf", l);
+        if (r < 0)
+                return r;
+
+        *settings = TAKE_PTR(l);
+
+        if (stat("/etc/locale.conf", &st) >= 0)
+                c->locale_mtime = timespec_load(&st.st_mtim);
+
+        return 0;
+}
+
+int vconsole_write_data(Context *c) {
+        _cleanup_strv_free_ char **l = NULL;
+        struct stat st;
+        int r;
+
+        r = load_env_file(NULL, "/etc/vconsole.conf", &l);
+        if (r < 0 && r != -ENOENT)
+                return r;
+
+        if (isempty(c->vc_keymap))
+                l = strv_env_unset(l, "KEYMAP");
+        else {
+                _cleanup_free_ char *s = NULL;
+                char **u;
+
+                s = strappend("KEYMAP=", c->vc_keymap);
+                if (!s)
+                        return -ENOMEM;
+
+                u = strv_env_set(l, s);
+                if (!u)
+                        return -ENOMEM;
+
+                strv_free_and_replace(l, u);
+        }
+
+        if (isempty(c->vc_keymap_toggle))
+                l = strv_env_unset(l, "KEYMAP_TOGGLE");
+        else  {
+                _cleanup_free_ char *s = NULL;
+                char **u;
+
+                s = strappend("KEYMAP_TOGGLE=", c->vc_keymap_toggle);
+                if (!s)
+                        return -ENOMEM;
+
+                u = strv_env_set(l, s);
+                if (!u)
+                        return -ENOMEM;
+
+                strv_free_and_replace(l, u);
+        }
+
+        if (strv_isempty(l)) {
+                if (unlink("/etc/vconsole.conf") < 0)
+                        return errno == ENOENT ? 0 : -errno;
+
+                c->vc_mtime = USEC_INFINITY;
+                return 0;
+        }
+
+        r = write_env_file_label("/etc/vconsole.conf", l);
+        if (r < 0)
+                return r;
+
+        if (stat("/etc/vconsole.conf", &st) >= 0)
+                c->vc_mtime = timespec_load(&st.st_mtim);
+
+        return 0;
+}
+
+int x11_write_data(Context *c) {
+        _cleanup_fclose_ FILE *f = NULL;
+        _cleanup_free_ char *temp_path = NULL;
+        struct stat st;
+        int r;
+
+        if (isempty(c->x11_layout) &&
+            isempty(c->x11_model) &&
+            isempty(c->x11_variant) &&
+            isempty(c->x11_options)) {
+
+                if (unlink("/etc/X11/xorg.conf.d/00-keyboard.conf") < 0)
+                        return errno == ENOENT ? 0 : -errno;
+
+                c->vc_mtime = USEC_INFINITY;
+                return 0;
+        }
+
+        mkdir_p_label("/etc/X11/xorg.conf.d", 0755);
+
+        r = fopen_temporary("/etc/X11/xorg.conf.d/00-keyboard.conf", &f, &temp_path);
+        if (r < 0)
+                return r;
+
+        (void) __fsetlocking(f, FSETLOCKING_BYCALLER);
+        (void) fchmod(fileno(f), 0644);
+
+        fputs("# Written by systemd-localed(8), read by systemd-localed and Xorg. It's\n"
+              "# probably wise not to edit this file manually. Use localectl(1) to\n"
+              "# instruct systemd-localed to update it.\n"
+              "Section \"InputClass\"\n"
+              "        Identifier \"system-keyboard\"\n"
+              "        MatchIsKeyboard \"on\"\n", f);
+
+        if (!isempty(c->x11_layout))
+                fprintf(f, "        Option \"XkbLayout\" \"%s\"\n", c->x11_layout);
+
+        if (!isempty(c->x11_model))
+                fprintf(f, "        Option \"XkbModel\" \"%s\"\n", c->x11_model);
+
+        if (!isempty(c->x11_variant))
+                fprintf(f, "        Option \"XkbVariant\" \"%s\"\n", c->x11_variant);
+
+        if (!isempty(c->x11_options))
+                fprintf(f, "        Option \"XkbOptions\" \"%s\"\n", c->x11_options);
+
+        fputs("EndSection\n", f);
+
+        r = fflush_sync_and_check(f);
+        if (r < 0)
+                goto fail;
+
+        if (rename(temp_path, "/etc/X11/xorg.conf.d/00-keyboard.conf") < 0) {
+                r = -errno;
+                goto fail;
+        }
+
+        if (stat("/etc/X11/xorg.conf.d/00-keyboard.conf", &st) >= 0)
+                c->x11_mtime = timespec_load(&st.st_mtim);
+
+        return 0;
+
+fail:
+        if (temp_path)
+                (void) unlink(temp_path);
+
+        return r;
+}
+
+static int read_next_mapping(const char* filename,
+                             unsigned min_fields, unsigned max_fields,
+                             FILE *f, unsigned *n, char ***a) {
+        assert(f);
+        assert(n);
+        assert(a);
+
+        for (;;) {
+                _cleanup_free_ char *line = NULL;
+                size_t length;
+                char *l, **b;
+                int r;
+
+                r = read_line(f, LONG_LINE_MAX, &line);
+                if (r < 0)
+                        return r;
+                if (r == 0)
+                        break;
+
+                (*n)++;
+
+                l = strstrip(line);
+                if (IN_SET(l[0], 0, '#'))
+                        continue;
+
+                r = strv_split_extract(&b, l, WHITESPACE, EXTRACT_QUOTES);
+                if (r < 0)
+                        return r;
+
+                length = strv_length(b);
+                if (length < min_fields || length > max_fields) {
+                        log_error("Invalid line %s:%u, ignoring.", filename, *n);
+                        strv_free(b);
+                        continue;
+
+                }
+
+                *a = b;
+                return 1;
+        }
+
+        return 0;
+}
+
+int vconsole_convert_to_x11(Context *c) {
+        const char *map;
+        int modified = -1;
+
+        map = systemd_kbd_model_map();
+
+        if (isempty(c->vc_keymap)) {
+                modified =
+                        !isempty(c->x11_layout) ||
+                        !isempty(c->x11_model) ||
+                        !isempty(c->x11_variant) ||
+                        !isempty(c->x11_options);
+
+                context_free_x11(c);
+        } else {
+                _cleanup_fclose_ FILE *f = NULL;
+                unsigned n = 0;
+
+                f = fopen(map, "re");
+                if (!f)
+                        return -errno;
+
+                for (;;) {
+                        _cleanup_strv_free_ char **a = NULL;
+                        int r;
+
+                        r = read_next_mapping(map, 5, UINT_MAX, f, &n, &a);
+                        if (r < 0)
+                                return r;
+                        if (r == 0)
+                                break;
+
+                        if (!streq(c->vc_keymap, a[0]))
+                                continue;
+
+                        if (!streq_ptr(c->x11_layout, strnulldash(a[1])) ||
+                            !streq_ptr(c->x11_model, strnulldash(a[2])) ||
+                            !streq_ptr(c->x11_variant, strnulldash(a[3])) ||
+                            !streq_ptr(c->x11_options, strnulldash(a[4]))) {
+
+                                if (free_and_strdup(&c->x11_layout, strnulldash(a[1])) < 0 ||
+                                    free_and_strdup(&c->x11_model, strnulldash(a[2])) < 0 ||
+                                    free_and_strdup(&c->x11_variant, strnulldash(a[3])) < 0 ||
+                                    free_and_strdup(&c->x11_options, strnulldash(a[4])) < 0)
+                                        return -ENOMEM;
+
+                                modified = true;
+                        }
+
+                        break;
+                }
+        }
+
+        if (modified > 0)
+                log_info("Changing X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'",
+                         strempty(c->x11_layout),
+                         strempty(c->x11_model),
+                         strempty(c->x11_variant),
+                         strempty(c->x11_options));
+        else if (modified < 0)
+                log_notice("X11 keyboard layout was not modified: no conversion found for \"%s\".",
+                           c->vc_keymap);
+        else
+                log_debug("X11 keyboard layout did not need to be modified.");
+
+        return modified > 0;
+}
+
+int find_converted_keymap(const char *x11_layout, const char *x11_variant, char **new_keymap) {
+        const char *dir;
+        _cleanup_free_ char *n;
+
+        if (x11_variant)
+                n = strjoin(x11_layout, "-", x11_variant);
+        else
+                n = strdup(x11_layout);
+        if (!n)
+                return -ENOMEM;
+
+        NULSTR_FOREACH(dir, KBD_KEYMAP_DIRS) {
+                _cleanup_free_ char *p = NULL, *pz = NULL;
+                bool uncompressed;
+
+                p = strjoin(dir, "xkb/", n, ".map");
+                pz = strjoin(dir, "xkb/", n, ".map.gz");
+                if (!p || !pz)
+                        return -ENOMEM;
+
+                uncompressed = access(p, F_OK) == 0;
+                if (uncompressed || access(pz, F_OK) == 0) {
+                        log_debug("Found converted keymap %s at %s",
+                                  n, uncompressed ? p : pz);
+
+                        *new_keymap = TAKE_PTR(n);
+                        return 1;
+                }
+        }
+
+        return 0;
+}
+
+int find_legacy_keymap(Context *c, char **ret) {
+        const char *map;
+        _cleanup_fclose_ FILE *f = NULL;
+        _cleanup_free_ char *new_keymap = NULL;
+        unsigned n = 0;
+        unsigned best_matching = 0;
+        int r;
+
+        assert(!isempty(c->x11_layout));
+
+        map = systemd_kbd_model_map();
+
+        f = fopen(map, "re");
+        if (!f)
+                return -errno;
+
+        for (;;) {
+                _cleanup_strv_free_ char **a = NULL;
+                unsigned matching = 0;
+
+                r = read_next_mapping(map, 5, UINT_MAX, f, &n, &a);
+                if (r < 0)
+                        return r;
+                if (r == 0)
+                        break;
+
+                /* Determine how well matching this entry is */
+                if (streq(c->x11_layout, a[1]))
+                        /* If we got an exact match, this is best */
+                        matching = 10;
+                else {
+                        /* We have multiple X layouts, look for an
+                         * entry that matches our key with everything
+                         * but the first layout stripped off. */
+                        if (startswith_comma(c->x11_layout, a[1]))
+                                matching = 5;
+                        else  {
+                                char *x;
+
+                                /* If that didn't work, strip off the
+                                 * other layouts from the entry, too */
+                                x = strndupa(a[1], strcspn(a[1], ","));
+                                if (startswith_comma(c->x11_layout, x))
+                                        matching = 1;
+                        }
+                }
+
+                if (matching > 0) {
+                        if (isempty(c->x11_model) || streq_ptr(c->x11_model, a[2])) {
+                                matching++;
+
+                                if (streq_ptr(c->x11_variant, a[3])) {
+                                        matching++;
+
+                                        if (streq_ptr(c->x11_options, a[4]))
+                                                matching++;
+                                }
+                        }
+                }
+
+                /* The best matching entry so far, then let's save that */
+                if (matching >= MAX(best_matching, 1u)) {
+                        log_debug("Found legacy keymap %s with score %u",
+                                  a[0], matching);
+
+                        if (matching > best_matching) {
+                                best_matching = matching;
+
+                                r = free_and_strdup(&new_keymap, a[0]);
+                                if (r < 0)
+                                        return r;
+                        }
+                }
+        }
+
+        if (best_matching < 10 && c->x11_layout) {
+                /* The best match is only the first part of the X11
+                 * keymap. Check if we have a converted map which
+                 * matches just the first layout.
+                 */
+                char *l, *v = NULL, *converted;
+
+                l = strndupa(c->x11_layout, strcspn(c->x11_layout, ","));
+                if (c->x11_variant)
+                        v = strndupa(c->x11_variant, strcspn(c->x11_variant, ","));
+                r = find_converted_keymap(l, v, &converted);
+                if (r < 0)
+                        return r;
+                if (r > 0)
+                        free_and_replace(new_keymap, converted);
+        }
+
+        *ret = TAKE_PTR(new_keymap);
+        return (bool) *ret;
+}
+
+int find_language_fallback(const char *lang, char **language) {
+        const char *map;
+        _cleanup_fclose_ FILE *f = NULL;
+        unsigned n = 0;
+
+        assert(lang);
+        assert(language);
+
+        map = systemd_language_fallback_map();
+
+        f = fopen(map, "re");
+        if (!f)
+                return -errno;
+
+        for (;;) {
+                _cleanup_strv_free_ char **a = NULL;
+                int r;
+
+                r = read_next_mapping(map, 2, 2, f, &n, &a);
+                if (r <= 0)
+                        return r;
+
+                if (streq(lang, a[0])) {
+                        assert(strv_length(a) == 2);
+                        *language = TAKE_PTR(a[1]);
+                        return 1;
+                }
+        }
+
+        assert_not_reached("should not be here");
+}
+
+int x11_convert_to_vconsole(Context *c) {
+        bool modified = false;
+
+        if (isempty(c->x11_layout)) {
+                modified =
+                        !isempty(c->vc_keymap) ||
+                        !isempty(c->vc_keymap_toggle);
+
+                context_free_vconsole(c);
+        } else {
+                _cleanup_free_ char *new_keymap = NULL;
+                int r;
+
+                r = find_converted_keymap(c->x11_layout, c->x11_variant, &new_keymap);
+                if (r < 0)
+                        return r;
+                else if (r == 0) {
+                        r = find_legacy_keymap(c, &new_keymap);
+                        if (r < 0)
+                                return r;
+                }
+                if (r == 0)
+                        /* We search for layout-variant match first, but then we also look
+                         * for anything which matches just the layout. So it's accurate to say
+                         * that we couldn't find anything which matches the layout. */
+                        log_notice("No conversion to virtual console map found for \"%s\".",
+                                   c->x11_layout);
+
+                if (!streq_ptr(c->vc_keymap, new_keymap)) {
+                        free_and_replace(c->vc_keymap, new_keymap);
+                        c->vc_keymap_toggle = mfree(c->vc_keymap_toggle);
+                        modified = true;
+                }
+        }
+
+        if (modified)
+                log_info("Changing virtual console keymap to '%s' toggle '%s'",
+                         strempty(c->vc_keymap), strempty(c->vc_keymap_toggle));
+        else
+                log_debug("Virtual console keymap was not modified.");
+
+        return modified;
+}