diff options
Diffstat (limited to 'src/logger/logger.cpp')
-rw-r--r-- | src/logger/logger.cpp | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/src/logger/logger.cpp b/src/logger/logger.cpp index 4287794..482cb18 100644 --- a/src/logger/logger.cpp +++ b/src/logger/logger.cpp @@ -1,6 +1,10 @@ #include <logger/logger.hpp> #include <config/config.hpp> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> + Logger::Logger(const int log_level): log_level(log_level), stream(std::cout.rdbuf()), @@ -8,7 +12,22 @@ Logger::Logger(const int log_level): null_stream{&null_buffer} { #ifdef SYSTEMD_FOUND - if (::getenv("JOURNAL_STREAM") != nullptr && this->use_stdout()) + if (!this->use_stdout()) + return; + + // See https://www.freedesktop.org/software/systemd/man/systemd.exec.html#%24JOURNAL_STREAM + const char* journal_stream = ::getenv("JOURNAL_STREAM"); + if (journal_stream == nullptr) + return; + + struct stat s{}; + const int res = ::fstat(STDOUT_FILENO, &s); + if (res == -1) + return; + + const auto stdout_stream = std::to_string(s.st_dev) + ":" + std::to_string(s.st_ino); + + if (stdout_stream == journal_stream) this->use_systemd = true; #endif } |