dup2             1251 core/ngx_cycle.c         if (dup2(cycle->log->file->fd, STDERR_FILENO) == -1) {
dup2               43 os/unix/ngx_daemon.c     if (dup2(fd, STDIN_FILENO) == -1) {
dup2               48 os/unix/ngx_daemon.c     if (dup2(fd, STDOUT_FILENO) == -1) {
dup2               54 os/unix/ngx_daemon.c     if (dup2(fd, STDERR_FILENO) == -1) {
dup2              324 os/unix/ngx_files.h #define ngx_set_stderr(fd)       dup2(fd, STDERR_FILENO)
dup2              104 os/unix/ngx_posix_init.c     if (dup2(pp[1], STDERR_FILENO) == -1) {