github.com/afumu/libc@v0.0.6/musl/src/linux/setfsuid.c (about)

     1  #include <sys/fsuid.h>
     2  #include "syscall.h"
     3  
     4  int setfsuid(uid_t uid)
     5  {
     6  	return syscall(SYS_setfsuid, uid);
     7  }