Hi
All but the stat bit looks fine. How do you reproduce the problems? It
seems to fail just fine without it.
$ config -f /x
config: cannot read /x: No such file or directory
Also maybe use access(2) instead?
On Wed, Sep 28, 2011 at 02:37:34AM +0100, Edd Barrett wrote:
> Evening,
>
> When using `config -e`:
> * Don't print a NULL pointer if binary loaded is not a kernel.
> * Don't segfault of binary loaded is not a kernel.
> * Report non-existent kernel via a preliminary stat().
> * Make a warning look like the rest.
>
> OK?
>
> Index: exec.c
> ===================================================================
> RCS file: /cvs/src/usr.sbin/config/exec.c,v
> retrieving revision 1.7
> diff -u -r1.7 exec.c
> --- exec.c 27 Oct 2009 23:59:51 -0000 1.7
> +++ exec.c 28 Sep 2011 01:19:49 -0000
> @@ -26,6 +26,8 @@
>
> #include <err.h>
> #include <sys/types.h>
> +#include <sys/stat.h>
> +#include <fcntl.h>
> #include <stdio.h>
>
> #ifdef AOUT_SUPPORT
> @@ -109,6 +111,11 @@
> void
> loadkernel(char *file)
> {
> + struct stat st;
> +
> + if (stat(file, &st) == -1)
> + err(1, "cannot stat '%s'", file);
> +
> current_exec = -1;
>
> #ifdef AOUT_SUPPORT
> Index: ukc.c
> ===================================================================
> RCS file: /cvs/src/usr.sbin/config/ukc.c,v
> retrieving revision 1.16
> diff -u -r1.16 ukc.c
> --- ukc.c 10 Dec 2009 22:07:19 -0000 1.16
> +++ ukc.c 28 Sep 2011 01:19:49 -0000
> @@ -114,10 +114,8 @@
> }
> }
>
> - printf("%s", adjust((caddr_t)nl[P_VERSION].n_value));
> -
> if (force == 0 && outfile == NULL)
> - printf("warning: no output file specified\n");
> + printf("WARNING no output file specified\n");
>
> if (nl[IA_EXTRALOC].n_type == 0 || nl[I_NEXTRALOC].n_type == 0 ||
> nl[I_UEXTRALOC].n_type == 0 || nl[I_HISTLEN].n_type == 0 ||
> @@ -155,6 +153,8 @@
> process_history(histlen, history);
> }
>
> + printf("%s", adjust((caddr_t)nl[P_VERSION].n_value));
> +
> if (config()) {
> if (force == 0 && outfile == NULL) {
> fprintf(stderr, "not forced\n");
> @@ -184,7 +184,9 @@
> struct winsize w;
> #endif
>
> - cd = get_cfdata(0); /* get first item */
> + if ((cd = get_cfdata(0)) == NULL) /* get first item */
> + errx(1, "failed to get first cfdata");
> +
> while (cd->cf_attach != 0) {
> maxdev = i;
> totdev = i;
>
> --
> Best Regards
> Edd Barrett
