e42b096439
EINTEGRITY was previously documented as a UFS-specific error for mount(2). This documents EINTEGRITY as a filesystem-independent error that may be reported by the backing store of a filesystem. While here, document EIO as a filesystem-independent error for both mount(2) and posix_fadvise(2). EIO was previously only documented for UFS for mount(2). Reviewed by: mckusick Suggested by: mckusick MFC after: 2 weeks Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D24168
134 lines
4.2 KiB
Groff
134 lines
4.2 KiB
Groff
.\" Copyright (c) 1980, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)acct.2 8.1 (Berkeley) 6/4/93
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd March 30, 2020
|
|
.Dt ACCT 2
|
|
.Os
|
|
.Sh NAME
|
|
.Nm acct
|
|
.Nd enable or disable process accounting
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In unistd.h
|
|
.Ft int
|
|
.Fn acct "const char *file"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn acct
|
|
system call enables or disables the collection of system accounting
|
|
records.
|
|
If the argument
|
|
.Fa file
|
|
is a null pointer, accounting is disabled.
|
|
If
|
|
.Fa file
|
|
is an
|
|
.Em existing
|
|
pathname (null-terminated), record collection is enabled and for
|
|
every process initiated which terminates under normal
|
|
conditions an accounting record is appended to
|
|
.Fa file .
|
|
Abnormal conditions of termination are reboots
|
|
or other fatal system problems.
|
|
Records for processes which never terminate cannot be
|
|
produced by
|
|
.Fn acct .
|
|
.Pp
|
|
For more information on the record structure used by
|
|
.Fn acct ,
|
|
see
|
|
.In sys/acct.h
|
|
and
|
|
.Xr acct 5 .
|
|
.Pp
|
|
This call is permitted only to the super-user.
|
|
.Sh NOTES
|
|
Accounting is automatically disabled when the file system the
|
|
accounting file resides on runs out of space; it is enabled when
|
|
space once again becomes available.
|
|
The values controlling this behaviour can be modified using the following
|
|
.Xr sysctl 8
|
|
variables:
|
|
.Bl -tag -width ".Va kern.acct_chkfreq"
|
|
.It Va kern.acct_chkfreq
|
|
Specifies the frequency (in seconds) with which free disk
|
|
space should be checked.
|
|
.It Va kern.acct_resume
|
|
The percentage of free disk space above which process
|
|
accounting will resume.
|
|
.It Va kern.acct_suspend
|
|
The percentage of free disk space below which process
|
|
accounting will suspend.
|
|
.El
|
|
.Sh RETURN VALUES
|
|
On error -1 is returned.
|
|
The file must exist and the call may be exercised only by the super-user.
|
|
.Sh ERRORS
|
|
The
|
|
.Fn acct
|
|
system call will fail if one of the following is true:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EPERM
|
|
The caller is not the super-user.
|
|
.It Bq Er ENOTDIR
|
|
A component of the path prefix is not a directory.
|
|
.It Bq Er ENAMETOOLONG
|
|
A component of a pathname exceeded 255 characters,
|
|
or an entire path name exceeded 1023 characters.
|
|
.It Bq Er ENOENT
|
|
The named file does not exist.
|
|
.It Bq Er EACCES
|
|
Search permission is denied for a component of the path prefix,
|
|
or the path name is not a regular file.
|
|
.It Bq Er ELOOP
|
|
Too many symbolic links were encountered in translating the pathname.
|
|
.It Bq Er EROFS
|
|
The named file resides on a read-only file system.
|
|
.It Bq Er EFAULT
|
|
The
|
|
.Fa file
|
|
argument
|
|
points outside the process's allocated address space.
|
|
.It Bq Er EIO
|
|
An I/O error occurred while reading from or writing to the file system.
|
|
.It Bq Er EINTEGRITY
|
|
Corrupted data was detected while reading from the file system.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr acct 5 ,
|
|
.Xr accton 8 ,
|
|
.Xr sa 8
|
|
.Sh HISTORY
|
|
The
|
|
.Fn acct
|
|
function appeared in
|
|
.At v7 .
|