fusl/src/process/fexecve.c

#include <unistd.h>
#include <errno.h>

void __procfdname(char*, unsigned);

int fexecve(int fd, char* const argv[], char* const envp[]) {
  char buf[15 + 3 * sizeof(int)];
  __procfdname(buf, fd);
  execve(buf, argv, envp);
  if (errno == ENOENT)
    errno = EBADF;
  return -1;
}