Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

if xxxinit is not found in the module, look for <modname>_lkmentry as an

Browse Source 
alternate entry point (used in provided modules).  Mention this on man page
too.
This commit is contained in:
darrenr 1997-09-15 09:27:52 +00:00
parent c9d9a2a11e
commit 5867f60b50
2 changed files with 58 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
sbin/modload/modload.8
View File

@ -1,4 +1,4 @@
.\" $NetBSD: modload.8,v 1.6 1997/09/15 03:55:25 lukem Exp $
.\" $NetBSD: modload.8,v 1.7 1997/09/15 09:27:53 darrenr Exp $
.\"
.\" Copyright (c) 1993 Christopher G. Demetriou
.\" All rights reserved.
@ -67,7 +67,9 @@ This is passed by
to
.Xr ld 1
when the module is linked.
The default module entry point name is `xxxinit'.
The default module entry point name is `xxxinit'. If `xxxinit' cannot be
found, an attempt to use `<module_name>_lkmentry' will be made, where
<module_name> is the filename being loaded without the `.o'.
.It Fl p Ar postinstall
Specify the name of a shell script or program that will
be executed if the module is successfully loaded. It

56
sbin/modload/modload.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: modload.c,v 1.15 1997/09/15 03:55:29 lukem Exp $ */
/* $NetBSD: modload.c,v 1.16 1997/09/15 09:27:52 darrenr Exp $ */
/*
* Copyright (c) 1993 Terrence R. Lambert.
@ -34,7 +34,7 @@
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: modload.c,v 1.15 1997/09/15 03:55:29 lukem Exp $");
__RCSID("$NetBSD: modload.c,v 1.16 1997/09/15 09:27:52 darrenr Exp $");
#endif /* not lint */
#include <sys/param.h>
@ -50,11 +50,15 @@ __RCSID("$NetBSD: modload.c,v 1.15 1997/09/15 03:55:29 lukem Exp $");
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <nlist.h>
#include "pathnames.h"
#ifndef DFLT_ENTRY
#define DFLT_ENTRY "xxxinit"
#endif /* !DFLT_ENTRY */
#ifndef DFLT_ENTRYEXT
#define DFLT_ENTRYEXT "_lkmentry"
#endif /* !DFLT_ENTRYEXT */
/*
* Expected linker options:
@ -148,6 +152,30 @@ cleanup()
close(modfd);
}
int
verify_entry(entry, filename)
char *entry, *filename;
{
struct nlist names[2];
int n;
bzero((char *)names, sizeof(names));
#ifdef _AOUT_INCLUDE_
names[0].n_un.n_name = (char *)malloc(strlen(entry) + 2);
names[0].n_un.n_name[0] = '_';
strcpy(names[0].n_un.n_name + 1, entry);
#else
names[0].n_name = (char *)malloc(strlen(entry) + 2);
names[0].n_name[0] = '_';
strcpy(names[0].n_name + 1, entry);
#endif
n = nlist(filename, names);
if (n == -1)
err(1, "nlist %s", filename);
return n;
}
int
main(argc, argv)
int argc;
@ -224,6 +252,30 @@ main(argc, argv)
*p = '\0';
}
/*
* Verify that the entry point for the module exists.
*/
if (verify_entry(entry, modobj)) {
/*
* Try <modobj>_init if entry is DFLT_ENTRY.
*/
if (entry == DFLT_ENTRY) {
if ((p = strrchr(modout, '/')))
p++;
else
p = modout;
entry = (char *)malloc(strlen(p) +
strlen(DFLT_ENTRYEXT) + 1);
strcpy(entry, p);
strcat(entry, DFLT_ENTRYEXT);
if (verify_entry(entry, modobj))
errx(1, "entry point _%s not found in %s",
entry, modobj);
} else
errx(1, "entry point _%s not found in %s", entry,
modobj);
}
/*
* Prelink to get file size
*/