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Annotation of 43BSDReno/sbin/savecore/savecore.8, revision 1.1.1.1

1.1       root        1: .\" Copyright (c) 1980 The Regents of the University of California.
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                     18: .\"    @(#)savecore.8  6.5 (Berkeley) 6/24/90
                     19: .\"
                     20: .TH SAVECORE 8 "June 24, 1990"
                     21: .UC 4
                     22: .SH NAME
                     23: savecore \- save a core dump of the operating system
                     24: .SH SYNOPSIS
                     25: .B savecore
                     26: .I dirname
                     27: [
                     28: .I system
                     29: ]
                     30: .SH DESCRIPTION
                     31: .I Savecore
                     32: is meant to be called near the end of the /etc/rc file.  Its function
                     33: is to save the core dump of the system (assuming one was made) and to
                     34: write a reboot message in the shutdown log.
                     35: .PP
                     36: Savecore checks the core dump to be certain it corresponds with the
                     37: current running unix.  If it does it saves the core image in the file
                     38: .IR dirname /vmcore.n
                     39: and its brother, the namelist,
                     40: .IR dirname /vmunix.n
                     41: The trailing ".n" in the pathnames is replaced by a number which grows
                     42: every time
                     43: .I savecore
                     44: is run in that directory.
                     45: .PP
                     46: Before savecore writes out a core image, it reads a number from the file
                     47: .IR dirname /minfree.
                     48: If the number of free kilobytes on the filesystem which contains
                     49: .I dirname
                     50: is less than the number obtained from the minfree file,
                     51: the core dump is not saved.
                     52: If the minfree file does not exist, savecore always writes out the core
                     53: file (assuming that a core dump was taken).
                     54: .PP
                     55: .I Savecore
                     56: also logs a reboot message using facility LOG_AUTH (see
                     57: .IR syslog (3))
                     58: If the system crashed as a result of a panic,
                     59: .I savecore
                     60: logs the panic string too.
                     61: .PP
                     62: If the core dump was from a system other than /vmunix, the name
                     63: of that system must be supplied as
                     64: .IR sysname .
                     65: .SH FILES
                     66: .DT
                     67: /vmunix                current UNIX
                     68: .SH BUGS
                     69: Can be fooled into thinking a core dump is the wrong size.

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