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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 $
36 .Nd enable or disable process accounting
42 .Fn acct "const char *file"
46 call enables or disables the collection of system accounting
50 is a null pointer, accounting is disabled.
55 pathname (null-terminated), record collection is enabled and for
56 every process initiated which terminates under normal
57 conditions an accounting record is appended to
59 Abnormal conditions of termination are reboots
60 or other fatal system problems.
61 Records for processes which never terminate can not be
65 For more information on the record structure used by
72 This call is permitted only to the super-user.
74 Accounting is automatically disabled when the file system the
75 accounting file resides on runs out of space; it is enabled when
76 space once again becomes available.
77 The values controlling this behaviour can be modified using the following
80 .Bl -tag -width ".Va kern.acct_chkfreq"
81 .It Va kern.acct_chkfreq
82 Specifies the frequency (in seconds) with which free disk
83 space should be checked.
84 .It Va kern.acct_resume
85 The percentage of free disk space above which process
86 accounting will resume.
87 .It Va kern.acct_suspend
88 The percentage of free disk space below which process
89 accounting will suspend.
92 On error -1 is returned.
93 The file must exist and the call may be exercised only by the super-user.
96 will fail if one of the following is true:
99 The caller is not the super-user.
101 A component of the path prefix is not a directory.
102 .It Bq Er ENAMETOOLONG
103 A component of a pathname exceeded 255 characters,
104 or an entire path name exceeded 1023 characters.
106 The named file does not exist.
108 Search permission is denied for a component of the path prefix,
109 or the path name is not a regular file.
111 Too many symbolic links were encountered in translating the pathname.
113 The named file resides on a read-only file system.
116 points outside the process's allocated address space.
118 An I/O error occurred while reading from or writing to the file system.
127 function call appeared in