69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
/*-
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* Copyright (c) 2009 Konstantin Belousov
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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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* 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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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/sbuf.h>
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#include <sys/uio.h>
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#include <fs/pseudofs/pseudofs.h>
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#include <fs/procfs/procfs.h>
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int
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procfs_doosrel(PFS_FILL_ARGS)
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{
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const char *pp;
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int ov, osrel, i;
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if (uio == NULL)
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return (EOPNOTSUPP);
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if (uio->uio_rw == UIO_READ) {
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sbuf_printf(sb, "%d\n", p->p_osrel);
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} else {
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sbuf_trim(sb);
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sbuf_finish(sb);
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pp = sbuf_data(sb);
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osrel = 0;
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i = sbuf_len(sb);
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while (i--) {
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if (*pp < '0' || *pp > '9')
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return (EINVAL);
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ov = osrel * 10 + *pp++ - '0';
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if (ov < osrel)
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return (EINVAL);
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osrel = ov;
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}
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p->p_osrel = osrel;
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}
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return (0);
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}
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