77 lines
2.5 KiB
C
77 lines
2.5 KiB
C
/*-
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* Copyright (c) 2006 Dag-Erling Coïdan Smørgrav
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/linker.h>
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#include <sys/module.h>
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#include <errno.h>
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#include <libutil.h>
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#include <string.h>
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int
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kld_isloaded(const char *name)
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{
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struct kld_file_stat fstat;
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struct module_stat mstat;
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const char *ko;
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int fid, mid;
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for (fid = kldnext(0); fid > 0; fid = kldnext(fid)) {
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fstat.version = sizeof(fstat);
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if (kldstat(fid, &fstat) != 0)
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continue;
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/* check if the file name matches the supplied name */
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if (strcmp(fstat.name, name) == 0)
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return (1);
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/* strip .ko and try again */
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if ((ko = strstr(fstat.name, ".ko")) != NULL &&
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strlen(name) == (size_t)(ko - fstat.name) &&
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strncmp(fstat.name, name, ko - fstat.name) == 0)
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return (1);
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/* look for a matching module within the file */
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for (mid = kldfirstmod(fid); mid > 0; mid = modfnext(mid)) {
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mstat.version = sizeof(mstat);
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if (modstat(mid, &mstat) != 0)
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continue;
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if (strcmp(mstat.name, name) == 0)
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return (1);
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}
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}
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return (0);
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}
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int
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kld_load(const char *name)
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{
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if (kldload(name) == -1 && errno != EEXIST)
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return (-1);
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return (0);
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}
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