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32 .\" @(#)acct.2 8.1 (Berkeley) 6/4/93
33 .\" $FreeBSD: src/lib/libc/sys/acct.2,v 1.6.2.5 2004/04/17 10:04:10 brueffer Exp $
34 .\" $DragonFly: src/lib/libc/sys/acct.2,v 1.4 2006/05/26 19:39:37 swildner Exp $
41 .Nd enable or disable process accounting
47 .Fn acct "const char *file"
51 call enables or disables the collection of system accounting
55 is a nil pointer, accounting is disabled.
60 pathname (null-terminated), record collection is enabled and for
61 every process initiated which terminates under normal
62 conditions an accounting record is appended to
64 Abnormal conditions of termination are reboots
65 or other fatal system problems.
66 Records for processes which never terminate can not be
70 For more information on the record structure used by
77 This call is permitted only to the super-user.
79 Accounting is automatically disabled when the file system the
80 accounting file resides on runs out of space; it is enabled when
81 space once again becomes available.
82 The values controlling this behaviour can be modified using the following
85 .Bl -tag -width ".Va kern.acct_chkfreq"
86 .It Va kern.acct_chkfreq
87 Specifies the frequency (in seconds) with which free disk
88 space should be checked.
89 .It Va kern.acct_resume
90 The percentage of free disk space above which process
91 accounting will resume.
92 .It Va kern.acct_suspend
93 The percentage of free disk space below which process
94 accounting will suspend.
97 On error -1 is returned.
98 The file must exist and the call may be exercised only by the super-user.
101 will fail if one of the following is true:
104 The caller is not the super-user.
106 A component of the path prefix is not a directory.
107 .It Bq Er ENAMETOOLONG
108 A component of a pathname exceeded 255 characters,
109 or an entire path name exceeded 1023 characters.
111 The named file does not exist.
113 Search permission is denied for a component of the path prefix,
114 or the path name is not a regular file.
116 Too many symbolic links were encountered in translating the pathname.
118 The named file resides on a read-only file system.
121 points outside the process's allocated address space.
123 An I/O error occurred while reading from or writing to the file system.
132 function call appeared in