38 bool ReadFdToString(int fd, std::string* content) {  in ReadFdToString()  argument
43   while ((n = TEMP_FAILURE_RETRY(read(fd, &buf[0], sizeof(buf)))) > 0) {  in ReadFdToString()
52   int fd = TEMP_FAILURE_RETRY(open(path.c_str(), O_RDONLY | O_CLOEXEC | O_NOFOLLOW | O_BINARY));  in ReadFileToString()  local
53   if (fd == -1) {  in ReadFileToString()
56   bool result = ReadFdToString(fd, content);  in ReadFileToString()
57   close(fd);  in ReadFileToString()
61 bool WriteStringToFd(const std::string& content, int fd) {  in WriteStringToFd()  argument
65     ssize_t n = TEMP_FAILURE_RETRY(write(fd, p, left));  in WriteStringToFd()
87   int fd = TEMP_FAILURE_RETRY(open(path.c_str(), flags, mode));  in WriteStringToFile()  local
88   if (fd == -1) {  in WriteStringToFile()
95   if (fchmod(fd, mode) == -1) {  in WriteStringToFile()
99   if (fchown(fd, owner, group) == -1) {  in WriteStringToFile()
103   if (!WriteStringToFd(content, fd)) {  in WriteStringToFile()
107   close(fd);  in WriteStringToFile()
114   int fd = TEMP_FAILURE_RETRY(open(path.c_str(), flags, DEFFILEMODE));  in WriteStringToFile()  local
115   if (fd == -1) {  in WriteStringToFile()
119   bool result = WriteStringToFd(content, fd);  in WriteStringToFile()
120   close(fd);  in WriteStringToFile()
124 bool ReadFully(int fd, void* data, size_t byte_count) {  in ReadFully()  argument
128     ssize_t n = TEMP_FAILURE_RETRY(read(fd, p, remaining));  in ReadFully()
136 bool WriteFully(int fd, const void* data, size_t byte_count) {  in WriteFully()  argument
140     ssize_t n = TEMP_FAILURE_RETRY(write(fd, p, remaining));  in WriteFully()