Date: Thu, 14 Jan 1999 01:50:57 +0100 (CET) From: assar@sics.se To: FreeBSD-gnats-submit@FreeBSD.ORG Cc: Doug Rabson <dfr@nlsystems.com> Subject: kern/9478: support for running a script from kldload and printing data in kldstat Message-ID: <199901140050.BAA00477@assaris.sics.se>
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>Number: 9478
>Category: kern
>Synopsis: support for running a script from kldload and printing data in kldstat
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Wed Jan 13 16:50:00 PST 1999
>Closed-Date:
>Last-Modified:
>Originator: Assar Westerlund
>Release: FreeBSD 3.0-CURRENT i386
>Organization:
none
>Environment:
>Description:
There's no way to figure what major number a dynimcally loaded device
driver got assigned. The patches below store that number in the data
portion of the module and let kldstat print it out. Also a `-p'
options is added to kldload which will run a script with all the data
fields of the loaded modules. This can be used to create the device
nodes and other tasks that needs to be done.
>How-To-Repeat:
>Fix:
Index: sys/kern/kern_conf.c
===================================================================
RCS file: /src/fbsd-repository/src/sys/kern/kern_conf.c,v
retrieving revision 1.29
diff -u -w -r1.29 kern_conf.c
--- kern_conf.c 1998/11/14 21:58:51 1.29
+++ kern_conf.c 1999/01/14 00:01:31
@@ -169,12 +169,15 @@
cdevsw_module_handler(module_t mod, int what, void *arg)
{
struct cdevsw_module_data* data = (struct cdevsw_module_data*) arg;
+ modspecific_t ms;
int error;
switch (what) {
case MOD_LOAD:
if (error = cdevsw_add(&data->dev, data->cdevsw, NULL))
return error;
+ ms.intval = major(data->dev);
+ module_setspecific(mod, &ms);
break;
case MOD_UNLOAD:
Index: sbin/kldload/kldload.c
===================================================================
RCS file: /src/fbsd-repository/src/sbin/kldload/kldload.c,v
retrieving revision 1.5
diff -u -w -r1.5 kldload.c
--- kldload.c 1998/07/06 06:58:32 1.5
+++ kldload.c 1999/01/14 00:22:45
@@ -33,6 +33,7 @@
#include <stdio.h>
#include <unistd.h>
#include <sys/param.h>
+#include <sys/module.h>
#include <sys/linker.h>
static void
@@ -42,18 +43,55 @@
exit(1);
}
+#define MAXMODULES 17
+
+static void
+do_postinstall(char *program, int fileid)
+{
+ int modid;
+ char *args[MAXMODULES];
+ int i;
+
+ i = 0;
+ args[i++] = program;
+
+ for (modid = kldfirstmod(fileid);
+ modid > 0;
+ modid = modfnext(modid)) {
+ struct module_stat stat;
+
+ if (i == MAXMODULES - 1)
+ errx(1, "too many modules in file %d", fileid);
+
+ stat.version = sizeof(stat);
+ if (modstat(modid, &stat) < 0)
+ err(1, "can't stat module id %d", modid);
+ asprintf (&args[i], "%d", stat.data.intval);
+ if (args[i] == NULL)
+ err(1, "asprintf");
+ ++i;
+ }
+ args[i++] = NULL;
+ execv (program, args);
+ err (1, "exec %s", program);
+}
+
int
main(int argc, char** argv)
{
int c;
int verbose = 0;
int fileid;
+ char *postinstall = NULL;
- while ((c = getopt(argc, argv, "v")) != -1)
+ while ((c = getopt(argc, argv, "vp:")) != -1)
switch (c) {
case 'v':
verbose = 1;
break;
+ case 'p':
+ postinstall = optarg;
+ break;
default:
usage();
}
@@ -66,9 +104,12 @@
fileid = kldload(argv[0]);
if (fileid < 0)
err(1, "can't load %s", argv[0]);
- else
+ else {
if (verbose)
printf("Loaded %s, id=%d\n", argv[0], fileid);
+ if (postinstall != NULL)
+ do_postinstall(postinstall, fileid);
+ }
return 0;
}
Index: sbin/kldload/kldload.8
===================================================================
RCS file: /src/fbsd-repository/src/sbin/kldload/kldload.8,v
retrieving revision 1.5
diff -u -w -u -w -r1.5 kldload.8
--- kldload.8 1998/11/12 11:10:26 1.5
+++ kldload.8 1999/01/14 00:49:20
@@ -34,6 +34,7 @@
.Sh SYNOPSIS
.Nm kldload
.Op Fl v
+.Op Fl p Ar program
.Ar filename
.Sh DESCRIPTION
The
@@ -46,6 +47,11 @@
.Bl -tag -width indent
.It Fl v
Be more verbose.
+.It Fl p Ar program
+Run
+.Ar program
+with the data fields from the loaded modules as arguments. This can
+be used to e.g. create the needed device nodes.
.El
.Sh FILES
.Bl -tag -width /modules -compact
Index: sbin/kldstat/kldstat.c
===================================================================
RCS file: /src/fbsd-repository/src/sbin/kldstat/kldstat.c,v
retrieving revision 1.5
diff -u -w -r1.5 kldstat.c
--- kldstat.c 1998/11/07 00:29:09 1.5
+++ kldstat.c 1999/01/14 00:23:22
@@ -46,8 +46,12 @@
stat.version = sizeof(struct module_stat);
if (modstat(modid, &stat) < 0)
warn("can't stat module id %d", modid);
- else
- printf("\t\t%2d %s\n", stat.id, stat.name);
+ else {
+ printf("\t\t%2d %s", stat.id, stat.name);
+ if (stat.data.intval)
+ printf(" (%d)", stat.data.intval);
+ printf("\n");
+ }
}
static void printfile(int fileid, int verbose)
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