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