fdcreate/fdcreate.c

#include <sys/mman.h>
#include <stdlib.h>

#include <skalibs/types.h>
#include <skalibs/strerr2.h>
#include <skalibs/env.h>
#include <skalibs/exec.h>

#define USAGE "fdcreate name prog..."

int main(int argc, char const *const *argv) {
	PROG = "fdcreate";
	char fd_str[10];

	if (argc < 3) strerr_dieusage(100, USAGE);
	int fd = memfd_create(argv[1], 0);
	if (fd < 0) strerr_diefu1sys(111, "memfd_create");

	int_fmt(fd_str, fd);

	setenv(argv[1], fd_str, 1);

	xexec(argv+2);
}