DragonFly On-Line Manual Pages


ACCT(2) 		 DragonFly System Calls Manual		       ACCT(2)

NAME

acct -- enable or disable process accounting

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <unistd.h> int acct(const char *file);

DESCRIPTION

The acct() call enables or disables the collection of system accounting records. If the argument file is a nil pointer, accounting is disabled. If file is an existing pathname (null-terminated), record collection is enabled and for every process initiated which terminates under normal conditions an accounting record is appended to file. Abnormal conditions of termination are reboots or other fatal system problems. Records for processes which never terminate can not be produced by acct(). For more information on the record structure used by acct(), see <sys/acct.h> and acct(5). This call is permitted only to the super-user.

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 sysctl(8) variables: kern.acct_chkfreq Specifies the frequency (in seconds) with which free disk space should be checked. kern.acct_resume The percentage of free disk space above which process accounting will resume. kern.acct_suspend The percentage of free disk space below which process accounting will suspend.

RETURN VALUES

On error -1 is returned. The file must exist and the call may be exer- cised only by the super-user.

ERRORS

Acct() will fail if one of the following is true: [EPERM] The caller is not the super-user. [ENOTDIR] A component of the path prefix is not a directory. [ENAMETOOLONG] A component of a pathname exceeded 255 characters, or an entire path name exceeded 1023 characters. [ENOENT] The named file does not exist. [EACCES] Search permission is denied for a component of the path prefix, or the path name is not a regular file. [ELOOP] Too many symbolic links were encountered in translat- ing the pathname. [EROFS] The named file resides on a read-only file system. [EFAULT] File points outside the process's allocated address space. [EIO] An I/O error occurred while reading from or writing to the file system.

SEE ALSO

acct(5), accton(8), sa(8)

HISTORY

An acct() function call appeared in Version 7 AT&T UNIX. DragonFly 4.1 April 17, 2004 DragonFly 4.1