github.com/afumu/libc@v0.0.6/musl/src/stdio/pclose.c (about)

     1  #include "stdio_impl.h"
     2  #include <errno.h>
     3  #include <unistd.h>
     4  
     5  int pclose(FILE *f)
     6  {
     7  	int status, r;
     8  	pid_t pid = f->pipe_pid;
     9  	fclose(f);
    10  	while ((r=__syscall(SYS_wait4, pid, &status, 0, 0)) == -EINTR);
    11  	if (r<0) return __syscall_ret(r);
    12  	return status;
    13  }