Hi Andrew,
On Fri, 21 Jan 2011, Andrew Bobulsky wrote:
Hello Nils,
Is this for defining the "TFTP Prefix:" one usually sees in a PXELINUX
boot or is it something else? Is there a specific usage scenario for
it?
Well, typically on our boot server we have a little layout that looks like
this:
tftp://server/one/long/path/kernel
tftp://server/one/long/path/initrd
tftp://server/one/long/path/pxelinux.0
tftp://server/one/long/path/pxelinux.cfg/default
All we get from dhcp is
filename=tftp://server/one/long/path/pxelinux.0
and
next-server=server
pxelinux works relatively the path of filename.
Now the server is a separate product, all we own on the server is our
directory, and in an upgrade we can't change the dhcp server
configuration, just the contents of the files. So we actually upload
undionly.kkpxe with a symlink from pxelinux.0. The undionly.kkpxe has a
built in script
set use-cached 1
dhcp net0
setdirname _basedir ${filename}
imgfetch -n bootscript
tftp://${next-server}/${_basedir}/pxelinux.cfg/default
imgload bootscript
imgexec bootscript
which lets us drop in a second script with whatever other parameters we
need at tftp://server/one/long/path/pxelinux.cfg/default.
All the time we keep the structure exactly the same as for the pxelinux
case, so its quite elegant. And we can gradually replace pxelinux and
eventually phase in newer features like booting from http, ftp or
multicast or some such.
/Nils
I'm just curious. Not much of a developer here myself, but I'm
intrigued by something that helps keep PXELINUX strictly to the PXE
boot scenarios that specifically require it, rather than having to
bolt it on to solve funny netboot problems :)
Thanks,
Andrew Bobulsky
On Fri, Jan 21, 2011 at 10:10 AM, Nils Carlson
<[email protected]> wrote:
Add a setdirname command allowing us to retrieve the directory
from a filename. Simplifies the replacement of pxelinux with
ipxe.
Signed-off-by: Nils Carlson <[email protected]>
---
src/hci/commands/nvo_cmd.c | 52 ++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 52 insertions(+), 0 deletions(-)
diff --git a/src/hci/commands/nvo_cmd.c b/src/hci/commands/nvo_cmd.c
index 3513c8d..784c14c 100644
--- a/src/hci/commands/nvo_cmd.c
+++ b/src/hci/commands/nvo_cmd.c
@@ -16,6 +16,7 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#include <libgen.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
@@ -178,6 +179,53 @@ static int clear_exec ( int argc, char **argv ) {
return 0;
}
+/** "setdirname" options */
+struct setdirname_options {};
+
+/** "setdirname" option list */
+static struct option_descriptor setdirname_opts[] = {};
+
+/** "clear" command descriptor */
+static struct command_descriptor setdirname_cmd =
+ COMMAND_DESC ( struct setdirname_options, setdirname_opts, 2, 2,
+ "<setting> <path>", "" );
+
+/**
+ * "setdirname" command
+ *
+ * @v argc Argument count
+ * @v argv Argument list
+ * @ret rc Return status code
+ */
+static int setdirname_exec ( int argc, char **argv ) {
+ struct setdirname_options opts;
+ int rc;
+ char buf[256];
+ unsigned int len;
+
+ /* Parse options */
+ if ( ( rc = parse_options ( argc, argv, &setdirname_cmd, &opts ) ) != 0
)
+ return rc;
+
+ len = strlen(argv[optind + 1]);
+ if ( len > (sizeof(buf) - 1) ) {
+ printf( "Path %s too long to save dirname\n", argv[optind + 1]
);
+ return 1;
+ }
+
+ strncpy( buf, argv[optind + 1], sizeof(buf) - 1 );
+
+ if ( ( rc = storef_named_setting ( argv[optind], dirname(buf) ) ) != 0
) {
+ printf ( "Could not set \"%s\" to dirname of \"%s\": %s\n",
+ argv[optind], argv[optind + 1], strerror ( rc ) );
+ return 1;
+ }
+
+ return 0;
+}
+
+
+
/** Non-volatile option commands */
struct command nvo_commands[] __command = {
{
@@ -192,4 +240,8 @@ struct command nvo_commands[] __command = {
.name = "clear",
.exec = clear_exec,
},
+ {
+ .name = "setdirname",
+ .exec = setdirname_exec,
+ },
};
--
1.6.0.2
_______________________________________________
ipxe-devel mailing list
[email protected]
https://lists.ipxe.org/mailman/listinfo/ipxe-devel
_______________________________________________
ipxe-devel mailing list
[email protected]
https://lists.ipxe.org/mailman/listinfo/ipxe-devel
