1 #define _GNU_SOURCE 2 #include <unistd.h> 3 #include <errno.h> 4 #include <fcntl.h> 5 #include "syscall.h" 6 fexecve(int fd,char * const argv[],char * const envp[])7int fexecve(int fd, char *const argv[], char *const envp[]) 8 { 9 int r = __syscall(SYS_execveat, fd, "", argv, envp, AT_EMPTY_PATH); 10 if (r != -ENOSYS) return __syscall_ret(r); 11 char buf[15 + 3*sizeof(int)]; 12 __procfdname(buf, fd); 13 execve(buf, argv, envp); 14 if (errno == ENOENT) errno = EBADF; 15 return -1; 16 } 17