51 lines
1.1 KiB
C++
51 lines
1.1 KiB
C++
#include <unistd.h>
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#include <fcntl.h>
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#include <string>
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#include <libreborn/log.h>
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#include <libreborn/env.h>
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// Debug Tag
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const char *reborn_debug_tag = "";
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// /dev/null FD
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static int null_fd = -1;
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static void setup_null_fd() {
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if (null_fd == -1) {
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null_fd = open("/dev/null", O_WRONLY | O_APPEND);
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}
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}
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__attribute__((destructor)) static void close_null_fd() {
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close(null_fd);
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}
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// Log File
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static int log_fd = -1;
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int reborn_get_log_fd() {
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if (log_fd >= 0) {
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return log_fd;
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}
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// Open Log File
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const char *fd_str = getenv(_MCPI_LOG_FD_ENV);
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if (fd_str) {
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log_fd = std::stoi(fd_str);
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} else {
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setup_null_fd();
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log_fd = null_fd;
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}
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// Return
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return reborn_get_log_fd();
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}
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void reborn_set_log(const int fd) {
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// Set Variable
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log_fd = -1;
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set_and_print_env(_MCPI_LOG_FD_ENV, fd >= 0 ? std::to_string(fd).c_str() : nullptr);
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}
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// Debug Logging
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static bool should_print_debug_to_stderr() {
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return getenv(MCPI_DEBUG_ENV) != nullptr;
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}
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int reborn_get_debug_fd() {
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return should_print_debug_to_stderr() ? STDERR_FILENO : reborn_get_log_fd();
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} |