HP-UX Reference (11i v1 05/09) - 1M System Administration Commands A-M (vol 3)

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fwtmp(1M) fwtmp(1M)

NAME

fwtmp, wtmpﬁx - manipulate connect accounting records

SYNOPSIS

/usr/sbin/acct/fwtmp

[ -ic ]

/usr/sbin/acct/wtmpfix

[ﬁles ]

DESCRIPTION

fwtmp

fwtmp reads from the standard input and writes to the standard output, converting binary records of the

type found in wtmp to formatted ASCII records. The ASCII version is useful to enable editing, via ed(1),

bad records or general purpose maintenance of the ﬁle.

The argument

-ic is used to denote that input is in ASCII form, and output is to be written in binary

form. (The arguments i and c are independent, respectively specifying ASCII input and binary output,

thus -i is an ASCII to ASCII copy and

-c is a binary to binary copy).

wtmpﬁx

wtmpfix examines the standard input or named ﬁles in wtmp format, corrects the time/date stamps to

make the entries consistent, and writes to the standard output. A - can be used in place of ﬁles to indicate

the standard input. If time/date corrections are not performed,

acctcon1 will fault when it encounters

certain date-change records.

Each time the date is set, a pair of date change records is written to

/var/adm/wtmp

. The ﬁrst record is

the old date denoted by the string old time placed in the line ﬁeld and the ﬂag

OLD_TIME placed in the

type ﬁeld of the

<utmp.h> structure. The second record speciﬁes the new date, and is denoted by the

string new time placed in the line ﬁeld and the ﬂag NEW_TIME placed in the type ﬁeld.

wtmpfix uses

these records to synchronize all time stamps in the ﬁle.

wtmpfix nulliﬁes date change records when writ-

ing to the standard output by setting the time ﬁeld of the <utmp.h> structure in the old date change

record equal to the time ﬁeld in the new date change record. This prevents wtmpfix and

acctcon1

from factoring in a date change record pair more than once.

In addition to correcting time/date stamps, wtmpfix checks the validity of the name ﬁeld to ensure that it

consists solely of alphanumeric characters or spaces. If it encounters a name that is considered invalid, it

changes the login name to

INVALID and write a diagnostic to the standard error. This minimizes the risk

that acctcon1 will fail when processing connect accounting records.

DIAGNOSTICS

wtmpfix generates the following diagnostics messages:

Cannot make temporary: xxx failed to make temp file

Input truncated at offset: xxx missing half of date pair

New date expected at offset: xxx missing half of date pair

Cannot read from temp: xxx some error reading

Bad file at offset:

xxx ut_line entry not digit, alpha, nor or { (first character only checked)

Out of core: malloc fails. (Saves table of date changes)

No dtab: software error (rarely seen, if ever)

FILES

/usr/include/utmp.h

/var/adm/wtmp