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Annotation of 43BSDTahoe/man/man8/savecore.8, revision 1.1.1.1

1.1       root        1: .\" Copyright (c) 1980 Regents of the University of California.
                      2: .\" All rights reserved.  The Berkeley software License Agreement
                      3: .\" specifies the terms and conditions for redistribution.
                      4: .\"
                      5: .\"    @(#)savecore.8  6.3 (Berkeley) 5/24/86
                      6: .\"
                      7: .TH SAVECORE 8 "May 24, 1986"
                      8: .UC 4
                      9: .SH NAME
                     10: savecore \- save a core dump of the operating system
                     11: .SH SYNOPSIS
                     12: .B /etc/savecore
                     13: .I dirname
                     14: [
                     15: .I system
                     16: ]
                     17: .SH DESCRIPTION
                     18: .I Savecore
                     19: is meant to be called near the end of the /etc/rc file.  Its function
                     20: is to save the core dump of the system (assuming one was made) and to
                     21: write a reboot message in the shutdown log.
                     22: .PP
                     23: Savecore checks the core dump to be certain it corresponds with the
                     24: current running unix.  If it does it saves the core image in the file
                     25: .IR dirname /vmcore.n
                     26: and its brother, the namelist,
                     27: .IR dirname /vmunix.n
                     28: The trailing ".n" in the pathnames is replaced by a number which grows
                     29: every time
                     30: .I savecore
                     31: is run in that directory.
                     32: .PP
                     33: Before savecore writes out a core image, it reads a number from the file
                     34: .IR dirname /minfree.
                     35: If the number of free kilobytes on the filesystem which contains
                     36: .I dirname
                     37: is less than the number obtained from the minfree file,
                     38: the core dump is not saved.
                     39: If the minfree file does not exist, savecore always writes out the core
                     40: file (assuming that a core dump was taken).
                     41: .PP
                     42: .I Savecore
                     43: also logs a reboot message using facility LOG_AUTH (see
                     44: .IR syslog (3))
                     45: If the system crashed as a result of a panic,
                     46: .I savecore
                     47: logs the panic string too.
                     48: .PP
                     49: If the core dump was from a system other than /vmunix, the name
                     50: of that system must be supplied as
                     51: .IR sysname .
                     52: .SH FILES
                     53: .DT
                     54: /vmunix                current UNIX
                     55: .SH BUGS
                     56: Can be fooled into thinking a core dump is the wrong size.

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