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author | Elliott Hughes <enh@google.com> | 2015-02-03 17:12:07 -0800 |
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committer | Elliott Hughes <enh@google.com> | 2015-02-04 08:59:10 -0800 |
commit | f3cf438714aa1284d8a58e2f3b108ba93f6d3abb (patch) | |
tree | 3a1b726c6805315c280d745e8b742ec9542d58e9 /init/keychords.cpp | |
parent | 5204b1580e0d0f38272c7da166eee9b88c14dc50 (diff) | |
download | system_core-f3cf438714aa1284d8a58e2f3b108ba93f6d3abb.zip system_core-f3cf438714aa1284d8a58e2f3b108ba93f6d3abb.tar.gz system_core-f3cf438714aa1284d8a58e2f3b108ba93f6d3abb.tar.bz2 |
Build init as C++.
This is just the minimal change to keep it building.
Change-Id: I245c5b8413a1db114576c81462eb5737f5ffcef2
Diffstat (limited to 'init/keychords.cpp')
-rw-r--r-- | init/keychords.cpp | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/init/keychords.cpp b/init/keychords.cpp new file mode 100644 index 0000000..d6464bd --- /dev/null +++ b/init/keychords.cpp @@ -0,0 +1,123 @@ +/* + * Copyright (C) 2010 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <errno.h> +#include <fcntl.h> +#include <stdlib.h> +#include <string.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <linux/keychord.h> +#include <unistd.h> + +#include "init.h" +#include "log.h" +#include "property_service.h" + +static struct input_keychord *keychords = 0; +static int keychords_count = 0; +static int keychords_length = 0; +static int keychord_fd = -1; + +void add_service_keycodes(struct service *svc) +{ + struct input_keychord *keychord; + int i, size; + + if (svc->keycodes) { + /* add a new keychord to the list */ + size = sizeof(*keychord) + svc->nkeycodes * sizeof(keychord->keycodes[0]); + keychords = (input_keychord*) realloc(keychords, keychords_length + size); + if (!keychords) { + ERROR("could not allocate keychords\n"); + keychords_length = 0; + keychords_count = 0; + return; + } + + keychord = (struct input_keychord *)((char *)keychords + keychords_length); + keychord->version = KEYCHORD_VERSION; + keychord->id = keychords_count + 1; + keychord->count = svc->nkeycodes; + svc->keychord_id = keychord->id; + + for (i = 0; i < svc->nkeycodes; i++) { + keychord->keycodes[i] = svc->keycodes[i]; + } + keychords_count++; + keychords_length += size; + } +} + +void keychord_init() +{ + int fd, ret; + + service_for_each(add_service_keycodes); + + /* nothing to do if no services require keychords */ + if (!keychords) + return; + + fd = open("/dev/keychord", O_RDWR | O_CLOEXEC); + if (fd < 0) { + ERROR("could not open /dev/keychord\n"); + return; + } + + ret = write(fd, keychords, keychords_length); + if (ret != keychords_length) { + ERROR("could not configure /dev/keychord %d (%d)\n", ret, errno); + close(fd); + fd = -1; + } + + free(keychords); + keychords = 0; + + keychord_fd = fd; +} + +void handle_keychord() +{ + struct service *svc; + char adb_enabled[PROP_VALUE_MAX]; + int ret; + __u16 id; + + // Only handle keychords if adb is enabled. + property_get("init.svc.adbd", adb_enabled); + ret = read(keychord_fd, &id, sizeof(id)); + if (ret != sizeof(id)) { + ERROR("could not read keychord id\n"); + return; + } + + if (!strcmp(adb_enabled, "running")) { + svc = service_find_by_keychord(id); + if (svc) { + INFO("starting service %s from keychord\n", svc->name); + service_start(svc, NULL); + } else { + ERROR("service for keychord %d not found\n", id); + } + } +} + +int get_keychord_fd() +{ + return keychord_fd; +} |