diff --git a/libcutils/fs_config.c b/libcutils/fs_config.c index 1915ced90..edf1feeac 100644 --- a/libcutils/fs_config.c +++ b/libcutils/fs_config.c @@ -52,21 +52,17 @@ struct fs_path_config_from_file { } __attribute__((__aligned__(sizeof(uint64_t)))); /* My kingdom for */ -static inline uint16_t get2LE(const uint8_t* src) -{ - return src[0] | (src[1] << 8); -} +static inline uint16_t get2LE(const uint8_t* src) { return src[0] | (src[1] << 8); } -static inline uint64_t get8LE(const uint8_t* src) -{ +static inline uint64_t get8LE(const uint8_t* src) { uint32_t low, high; low = src[0] | (src[1] << 8) | (src[2] << 16) | (src[3] << 24); high = src[4] | (src[5] << 8) | (src[6] << 16) | (src[7] << 24); - return ((uint64_t) high << 32) | (uint64_t) low; + return ((uint64_t)high << 32) | (uint64_t)low; } -#define ALIGN(x, alignment) ( ((x) + ((alignment) - 1)) & ~((alignment) - 1) ) +#define ALIGN(x, alignment) (((x) + ((alignment)-1)) & ~((alignment)-1)) /* Rules for directories. ** These rules are applied based on "first match", so they @@ -75,6 +71,7 @@ static inline uint64_t get8LE(const uint8_t* src) */ static const struct fs_path_config android_dirs[] = { + /* clang-format off */ { 00770, AID_SYSTEM, AID_CACHE, 0, "cache" }, { 00500, AID_ROOT, AID_ROOT, 0, "config" }, { 00771, AID_SYSTEM, AID_SYSTEM, 0, "data/app" }, @@ -104,6 +101,7 @@ static const struct fs_path_config android_dirs[] = { { 00755, AID_ROOT, AID_SHELL, 0, "vendor" }, { 00777, AID_ROOT, AID_ROOT, 0, "sdcard" }, { 00755, AID_ROOT, AID_ROOT, 0, 0 }, + /* clang-format on */ }; /* Rules for files. @@ -116,6 +114,7 @@ static const char conf_dir[] = "/system/etc/fs_config_dirs"; static const char conf_file[] = "/system/etc/fs_config_files"; static const struct fs_path_config android_files[] = { + /* clang-format off */ { 00440, AID_ROOT, AID_SHELL, 0, "system/etc/init.goldfish.rc" }, { 00550, AID_ROOT, AID_SHELL, 0, "system/etc/init.goldfish.sh" }, { 00550, AID_ROOT, AID_SHELL, 0, "system/etc/init.ril" }, @@ -139,7 +138,8 @@ static const struct fs_path_config android_files[] = { { 04750, AID_ROOT, AID_SHELL, 0, "system/xbin/su" }, { 06755, AID_ROOT, AID_ROOT, 0, "system/xbin/procmem" }, - /* the following files have enhanced capabilities and ARE included in user builds. */ + /* the following files have enhanced capabilities and ARE included + * in user builds. */ { 00550, AID_LOGD, AID_LOGD, CAP_MASK_LONG(CAP_SYSLOG) | CAP_MASK_LONG(CAP_AUDIT_CONTROL) | CAP_MASK_LONG(CAP_SETGID), @@ -167,7 +167,8 @@ static const struct fs_path_config android_files[] = { { 00700, AID_BLUETOOTH, AID_BLUETOOTH, CAP_MASK_LONG(CAP_NET_ADMIN), "vendor/bin/hw/android.hardware.bluetooth@1.0-service" }, - /* A non-privileged zygote that spawns isolated processes for web rendering. */ + /* A non-privileged zygote that spawns + * isolated processes for web rendering. */ { 0750, AID_ROOT, AID_ROOT, CAP_MASK_LONG(CAP_SETUID) | CAP_MASK_LONG(CAP_SETGID) | CAP_MASK_LONG(CAP_SETPCAP), @@ -203,16 +204,17 @@ static const struct fs_path_config android_files[] = { { 00600, AID_ROOT, AID_ROOT, 0, "vendor/default.prop" }, { 00600, AID_ROOT, AID_ROOT, 0, "odm/default.prop" }, { 00644, AID_ROOT, AID_ROOT, 0, 0 }, + /* clang-format on */ }; -static int fs_config_open(int dir, const char *target_out_path) -{ +static int fs_config_open(int dir, const char* target_out_path) { int fd = -1; if (target_out_path && *target_out_path) { - /* target_out_path is the path to the directory holding content of system partition - but as we cannot guaranty it ends with '/system' we need this below skip_len logic */ - char *name = NULL; + /* target_out_path is the path to the directory holding content of + * system partition but as we cannot guaranty it ends with '/system' + * we need this below skip_len logic */ + char* name = NULL; int target_out_path_len = strlen(target_out_path); int skip_len = strlen("/system"); @@ -230,9 +232,7 @@ static int fs_config_open(int dir, const char *target_out_path) return fd; } -static bool fs_config_cmp(bool dir, const char *prefix, size_t len, - const char *path, size_t plen) -{ +static bool fs_config_cmp(bool dir, const char* prefix, size_t len, const char* path, size_t plen) { if (dir) { if (plen < len) { return false; @@ -249,11 +249,11 @@ static bool fs_config_cmp(bool dir, const char *prefix, size_t len, return !strncmp(prefix, path, len); } -void fs_config(const char *path, int dir, const char *target_out_path, - unsigned *uid, unsigned *gid, unsigned *mode, uint64_t *capabilities) -{ - const struct fs_path_config *pc; - int fd, plen; +void fs_config(const char* path, int dir, const char* target_out_path, unsigned* uid, unsigned* gid, + unsigned* mode, uint64_t* capabilities) { + const struct fs_path_config* pc; + size_t plen; + int fd; if (path[0] == '/') { path++; @@ -266,8 +266,8 @@ void fs_config(const char *path, int dir, const char *target_out_path, struct fs_path_config_from_file header; while (TEMP_FAILURE_RETRY(read(fd, &header, sizeof(header))) == sizeof(header)) { - char *prefix; - uint16_t host_len = get2LE((const uint8_t *)&header.len); + char* prefix; + uint16_t host_len = get2LE((const uint8_t*)&header.len); ssize_t len, remainder = host_len - sizeof(header); if (remainder <= 0) { ALOGE("%s len is corrupted", dir ? conf_dir : conf_file); @@ -292,10 +292,10 @@ void fs_config(const char *path, int dir, const char *target_out_path, if (fs_config_cmp(dir, prefix, len, path, plen)) { free(prefix); close(fd); - *uid = get2LE((const uint8_t *)&(header.uid)); - *gid = get2LE((const uint8_t *)&(header.gid)); - *mode = (*mode & (~07777)) | get2LE((const uint8_t *)&(header.mode)); - *capabilities = get8LE((const uint8_t *)&(header.capabilities)); + *uid = get2LE((const uint8_t*)&(header.uid)); + *gid = get2LE((const uint8_t*)&(header.gid)); + *mode = (*mode & (~07777)) | get2LE((const uint8_t*)&(header.mode)); + *capabilities = get8LE((const uint8_t*)&(header.capabilities)); return; } free(prefix); @@ -303,8 +303,7 @@ void fs_config(const char *path, int dir, const char *target_out_path, close(fd); } - pc = dir ? android_dirs : android_files; - for(; pc->prefix; pc++){ + for (pc = dir ? android_dirs : android_files; pc->prefix; pc++) { if (fs_config_cmp(dir, pc->prefix, strlen(pc->prefix), path, plen)) { break; } @@ -315,9 +314,8 @@ void fs_config(const char *path, int dir, const char *target_out_path, *capabilities = pc->capabilities; } -ssize_t fs_config_generate(char *buffer, size_t length, const struct fs_path_config *pc) -{ - struct fs_path_config_from_file *p = (struct fs_path_config_from_file *)buffer; +ssize_t fs_config_generate(char* buffer, size_t length, const struct fs_path_config* pc) { + struct fs_path_config_from_file* p = (struct fs_path_config_from_file*)buffer; size_t len = ALIGN(sizeof(*p) + strlen(pc->prefix) + 1, sizeof(uint64_t)); if ((length < len) || (len > UINT16_MAX)) { @@ -325,11 +323,11 @@ ssize_t fs_config_generate(char *buffer, size_t length, const struct fs_path_con } memset(p, 0, len); uint16_t host_len = len; - p->len = get2LE((const uint8_t *)&host_len); - p->mode = get2LE((const uint8_t *)&(pc->mode)); - p->uid = get2LE((const uint8_t *)&(pc->uid)); - p->gid = get2LE((const uint8_t *)&(pc->gid)); - p->capabilities = get8LE((const uint8_t *)&(pc->capabilities)); + p->len = get2LE((const uint8_t*)&host_len); + p->mode = get2LE((const uint8_t*)&(pc->mode)); + p->uid = get2LE((const uint8_t*)&(pc->uid)); + p->gid = get2LE((const uint8_t*)&(pc->gid)); + p->capabilities = get8LE((const uint8_t*)&(pc->capabilities)); strcpy(p->prefix, pc->prefix); return len; }