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81661c94b6
Caveats: The new savecore program is not complete in the sense that it emulates enough of the old savecores features to do the job, but implements none of the options yet. I would appreciate if a userland hacker could help me out getting savecore to do what we want it to do from a users point of view, compression, email-notification, space reservation etc etc. (send me email if you are interested). Currently, savecore will scan all devices marked as "swap" or "dump" in /etc/fstab _or_ any devices specified on the command-line. All architectures but i386 lack an implementation of dumpsys(), but looking at the i386 version it should be trivial for anybody familiar with the platform(s) to provide this function. Documentation is quite sparse at this time, more to come. Details: ATA and SCSI drivers should work as the dump formatting code has been removed. The IDA, TWE and AAC have not yet been converted. Dumpon now opens the device and uses ioctl(DIOCGKERNELDUMP) to set the device as dumpdev. To implement the "off" argument, /dev/null is used as the device. Savecore will fail if handed any options since they are not (yet) implemented. All devices marked "dump" or "swap" in /etc/fstab will be scanned and dumps found will be saved to diskfiles named from the MD5 hash of the header record. The header record is dumped in readable format in the .info file. The kernel is not saved. Only complete dumps will be saved. All maintainer rights for this code are disclaimed: feel free to improve and extend. Sponsored by: DARPA, NAI Labs
183 lines
3.7 KiB
C
183 lines
3.7 KiB
C
/*
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* Copyright (c) 1982, 1986, 1991, 1993
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* The Regents of the University of California. 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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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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* @(#)subr_xxx.c 8.1 (Berkeley) 6/10/93
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* $FreeBSD$
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*/
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/*
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* Miscellaneous trivial functions.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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/*
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* Return error for operation not supported
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* on a specific object or file type.
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*/
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int
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eopnotsupp()
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{
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return (EOPNOTSUPP);
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}
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/*
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* Generic null operation, always returns success.
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*/
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int
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nullop()
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{
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return (0);
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}
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#include <sys/conf.h>
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/*
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* Unsupported devswitch functions (e.g. for writing to read-only device).
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* XXX may belong elsewhere.
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*/
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int
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noopen(dev, flags, fmt, td)
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dev_t dev;
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int flags;
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int fmt;
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struct thread *td;
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{
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return (ENODEV);
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}
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int
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noclose(dev, flags, fmt, td)
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dev_t dev;
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int flags;
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int fmt;
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struct thread *td;
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{
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return (ENODEV);
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}
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int
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noread(dev, uio, ioflag)
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dev_t dev;
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struct uio *uio;
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int ioflag;
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{
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return (ENODEV);
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}
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int
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nowrite(dev, uio, ioflag)
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dev_t dev;
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struct uio *uio;
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int ioflag;
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{
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return (ENODEV);
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}
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int
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noioctl(dev, cmd, data, flags, td)
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dev_t dev;
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u_long cmd;
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caddr_t data;
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int flags;
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struct thread *td;
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{
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return (ENODEV);
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}
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int
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nokqfilter(dev, kn)
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dev_t dev;
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struct knote *kn;
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{
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return (ENODEV);
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}
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int
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nommap(dev, offset, nprot)
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dev_t dev;
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vm_offset_t offset;
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int nprot;
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{
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/* Don't return ENODEV. That would allow mapping address ENODEV! */
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return (-1);
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}
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int
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nodump(dev_t dev, void *virtual __unused, vm_offset_t physical __unused, off_t offset __unused, size_t length __unused)
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{
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return (ENODEV);
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}
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/*
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* Null devswitch functions (for when the operation always succeeds).
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* XXX may belong elsewhere.
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* XXX not all are here (e.g., seltrue() isn't).
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*/
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/*
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* XXX this is probably bogus. Any device that uses it isn't checking the
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* minor number.
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*/
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int
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nullopen(dev, flags, fmt, td)
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dev_t dev;
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int flags;
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int fmt;
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struct thread *td;
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{
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return (0);
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}
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int
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nullclose(dev, flags, fmt, td)
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dev_t dev;
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int flags;
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int fmt;
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struct thread *td;
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{
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return (0);
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}
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