diff options
| -rw-r--r-- | CMakeLists.txt | 2 | ||||
| -rw-r--r-- | hw/shared.c | 129 | ||||
| -rw-r--r-- | hw/shared.h | 43 |
3 files changed, 173 insertions, 1 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index bdba1d1..380ffb1 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -40,7 +40,7 @@ TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${rpkgs_LDFLAGS} "-ldl") SET_TARGET_PROPERTIES(${PROJECT_NAME} PROPERTIES SOVERSION ${VERSION}) INSTALL(TARGETS ${PROJECT_NAME} DESTINATION ${LIB_INSTALL_DIR} COMPONENT RuntimeLibraries) -ADD_LIBRARY(hwcommon SHARED hw/common.c hw/systemd.c) +ADD_LIBRARY(hwcommon SHARED hw/common.c hw/systemd.c hw/shared.c) TARGET_LINK_LIBRARIES(hwcommon ${rpkgs_LDFLAGS} "-ldl") SET_TARGET_PROPERTIES(hwcommon PROPERTIES SOVERSION ${VERSION}) INSTALL(TARGETS hwcommon DESTINATION ${LIB_INSTALL_DIR} COMPONENT RuntimeLibraries) diff --git a/hw/shared.c b/hw/shared.c new file mode 100644 index 0000000..b6401c1 --- /dev/null +++ b/hw/shared.c @@ -0,0 +1,129 @@ +/* + * device-node + * + * Copyright (c) 2015 Samsung Electronics Co., Ltd. + * + * 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 <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <errno.h> + +#define BUF_MAX 255 + +static int sys_read_buf(char *file, char *buf, int len) +{ + int fd, r; + + if (!file || !buf || len < 0) + return -EINVAL; + + fd = open(file, O_RDONLY); + if (fd == -1) + return -ENOENT; + + r = read(fd, buf, len); + close(fd); + if ((r >= 0) && (r < len)) + buf[r] = '\0'; + else + return -EIO; + + return 0; +} + +static int sys_write_buf(char *file, char *buf) +{ + int fd, r; + + if (!file || !buf) + return -EINVAL; + + fd = open(file, O_WRONLY); + if (fd == -1) + return -EPERM; + + r = write(fd, buf, strlen(buf)); + close(fd); + if (r < 0) + return -EIO; + + return 0; +} + +int sys_get_int(char *fname, int *val) +{ + char buf[BUF_MAX]; + int r; + + if (!fname || !val) + return -EINVAL; + + r = sys_read_buf(fname, buf, sizeof(buf)); + if (r < 0) + return r; + + *val = atoi(buf); + return 0; +} + +int sys_get_str(char *fname, char *str, int len) +{ + int r; + + if (!fname || !str || len < 0) + return -EINVAL; + + r = sys_read_buf(fname, str, len); + if (r < 0) + return r; + + return 0; +} + +int sys_set_int(char *fname, int val) +{ + char buf[BUF_MAX]; + int r; + + if (!fname) + return -EINVAL; + + snprintf(buf, sizeof(buf), "%d", val); + r = sys_write_buf(fname, buf); + if (r < 0) + return r; + + return 0; +} + +int sys_set_str(char *fname, char *val) +{ + int r; + + if (!fname || !val) + return -EINVAL; + + r = sys_write_buf(fname, val); + if (r < 0) + return r; + + return 0; +} diff --git a/hw/shared.h b/hw/shared.h new file mode 100644 index 0000000..da51ca4 --- /dev/null +++ b/hw/shared.h @@ -0,0 +1,43 @@ +/* + * libdevice-node + * + * Copyright (c) 2015 Samsung Electronics Co., Ltd. + * + * 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. + */ + + +#ifndef __HW_DEFAULT_SHARED_H__ +#define __HW_DEFAULT_SHARED_H__ + +#define FEATURE_HARDWARE_DLOG +#ifdef FEATURE_HARDWARE_DLOG +#define LOG_TAG "HARDWARE" +#include <dlog.h> +#define _I(fmt, args...) SLOGI(fmt, ##args) +#define _D(fmt, args...) SLOGD(fmt, ##args) +#define _E(fmt, args...) SLOGE(fmt, ##args) +#else +#define _I(x, ...) do { } while (0) +#define _D(x, ...) do { } while (0) +#define _E(x, ...) do { } while (0) +#endif + +#define ARRAY_SIZE(name) (sizeof(name)/sizeof(name[0])) + +int sys_get_int(char *fname, int *val); +int sys_get_str(char *fname, char *str, int len); +int sys_set_int(char *fname, int val); +int sys_set_str(char *fname, char *val); + +#endif |