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ACCT(2) 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() system call enables or disables the collection of system ac- counting records. If the argument file is a null 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. Ab- normal conditions of termination are reboots or other fatal system problems. Records for processes which never terminate cannot be pro- duced 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 account- ing 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 The acct() system call 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 trans- lating the pathname. [EROFS] The named file resides on a read-only file system. [EFAULT] The file argument points outside the process's allo- cated address space. [EIO] An I/O error occurred while reading from or writing to the file system. [EINTEGRITY] Corrupted data was detected while reading from the file system. SEE ALSO acct(5), accton(8), sa(8) HISTORY The acct() function appeared in Version 7 AT&T UNIX. FreeBSD 13.2 March 30, 2020 ACCT(2)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | NOTES | RETURN VALUES | ERRORS | SEE ALSO | HISTORY
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