github.com/afumu/libc@v0.0.6/musl/src/legacy/getdtablesize.c (about)

     1  #define _GNU_SOURCE
     2  #include <unistd.h>
     3  #include <limits.h>
     4  #include <sys/resource.h>
     5  
     6  int getdtablesize(void)
     7  {
     8  	struct rlimit rl;
     9  	getrlimit(RLIMIT_NOFILE, &rl);
    10  	return rl.rlim_cur < INT_MAX ? rl.rlim_cur : INT_MAX;
    11  }