118   char channel[kChannelSize] = {0};  in ReadChannelFromMisc()  local
121           fd, channel, kChannelSize - 1, kChannelOffset, &bytes_read) ||  in ReadChannelFromMisc()
126   if (channel[0] == '\0') {  in ReadChannelFromMisc()
130   if (!base::EndsWith(channel, "-channel", base::CompareCase::SENSITIVE)) {  in ReadChannelFromMisc()
131     LOG(ERROR) << "Channel " << channel << " doesn't end with -channel.";  in ReadChannelFromMisc()
134   out_channel->assign(channel);  in ReadChannelFromMisc()
148   char channel[kChannelSize] = {0};  in WriteChannelToMisc()  local
149   memcpy(channel, in_channel.data(), in_channel.size());  in WriteChannelToMisc()
150   if (!utils::PWriteAll(fd, channel, kChannelSize, kChannelOffset)) {  in WriteChannelToMisc()
158   string channel;  in GetTargetChannel()  local
159   if (!ReadChannelFromMisc(&channel))  in GetTargetChannel()
160     channel = GetProperty(kPropDefaultChannel, "stable-channel");  in GetTargetChannel()
161   return channel;  in GetTargetChannel()