HP-UX Reference (11i v1 05/09) - 5 Miscellaneous Topics (vol 9)

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libcrash(5) libcrash(5)
CRASHDIR (Version 2) This format, used in HP-UX 11.00 and later, consists of a
crash.n directory
containing an
INDEX file, the kernel and all dynamically loaded kernel module files, and
numerous image.m.p files, each of which contain portions of the physical memory image
and metadata describing which memory pages were dumped and which were not.
PARDIR (Version 5) This format is used in
HP-UX Release 11i Version 1.0 and later. It is very similar
in structure to the
CRASHDIR format in that it consists of a
crash.n directory containing
an
INDEX file, the kernel and all dynamically loaded kernel module files, and numerous
image.m.p files, each of which contain portions of the physical memory image and meta-
data describing which memory pages were dumped and which were not. In addition to the
primary INDEX file, there are auxiliary index files, that contain metadata describing the
image files containing the memory pages. This format will be used when the dump is
compressed. See crashconf(1M).
Other formats, for example tape archival formats, may be added in the future.
RETURN VALUES
Most of the calls in libcrash return an integer status value. A zero return value indicates success. A posi-
tive return value indicates some sort of warning, despite which the requested operation was completed. A
negative return value indicates some sort of error, which prevented completion of the requested operation.
The values returned by the library are:
CR_OK Success.
CRWARN_NOEXPECTED
The expected size or checksum of one or more files in the crash dump was
not recorded, so the integrity of the dump cannot be verified. The dump
might be corrupt.
CRWARN_NOACTUAL The checksum of one or more files in the crash dump could not be com-
puted, so it could not be checked against the expected value. The dump
might be corrupt.
CRWARN_SWAPPEDON A raw device containing a portion of the crash dump has been swapped on,
so the dump is probably corrupt.
CRWARN_MISMATCH The size or checksum of one or more files in the crash dump did not match
what was expected. The dump is probably corrupt.
CRERR_NOPAGE A read or write request was issued for a memory address that does not
exist on the target machine.
CRERR_READONLY A write request was issued for a crash dump. Writes are supported only
to running systems through the
/dev/mem driver.
CRERR_WRONGDUMP A raw dump device which is supposed to contain part of the dump does
not. It may have been overwritten by swap activity or by a more recent
dump.
CRERR_WRONGHOST A portion of the crash dump still resides on a dump device of the system
that dumped, which is not the current system.
CRERR_NONODE The specified node number does not exist.
CRERR_ERRNO A system error occurred. Consult errno for the specific error. Note
that certain values for errno have specific meanings in the context of
the library. They include:
[ENOEXEC] A portion of the crash dump could not be uncompressed.
[ENOTDIR] The specified pathname for the dump was neither a plain
file, nor a directory containing an INDEX file, nor the
/dev/mem pseudodriver.
\ Other values of errno have their traditional meanings.
AUTHOR
libcrash was developed by HP.
HP-UX 11i Version 1: September 2005 − 2 − Hewlett-Packard Company Section 5−−81