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

     1  #include <sys/fsuid.h>
     2  #include "syscall.h"
     3  
     4  int setfsgid(gid_t gid)
     5  {
     6  	return syscall(SYS_setfsgid, gid);
     7  }