linux无文件执行elf

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <linux/memfd.h>
#include <sys/syscall.h>
#include <errno.h>
int anonyexec(const char *path, char *argv[])
{
int fd, fdm, filesize;
void *elfbuf;
char cmdline[256];
fd = open(path, O_RDONLY);
filesize = lseek(fd, SEEK_SET, SEEK_END);
lseek(fd, SEEK_SET, SEEK_SET);
elfbuf = malloc(filesize);
read(fd, elfbuf, filesize);
close(fd);
fdm = syscall(__NR_memfd_create, "elf", MFD_CLOEXEC);
ftruncate(fdm, filesize);
write(fdm, elfbuf, filesize);
free(elfbuf);
sprintf(cmdline, "/proc/self/fd/%d", fdm);
argv[0] = cmdline;
execve(argv[0], argv, NULL);
free(elfbuf);
return -1;
}
int main()
{
char *argv[] = {"/bin/name", "-a", NULL};
int result =anonyexec("/bin/name", argv);
return result;
}