github.com/afumu/libc@v0.0.6/musl/src/stat/umask.c (about)

     1  #include <sys/stat.h>
     2  #include "syscall.h"
     3  
     4  mode_t umask(mode_t mode)
     5  {
     6  	return syscall(SYS_umask, mode);
     7  }