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ACCT(2) FreeBSD System Calls Manual ACCT(2) NAME acct - enable or disable process accounting SYNOPSIS #include <unistd.h> int acct(const char *file); DESCRIPTION The acct() call enables or disables the collection of system accounting records. If file is NULL, accounting is disabled. If file is an existing, NUL-terminated pathname, record collection is enabled. For every process initiated which terminates under normal conditions or misbehaves in very specific ways (e.g. file access prevented by unveil), an accounting record is appended to file. Abnormal conditions of termination are reboots or other fatal system problems. acct() is only available on kernels compiled with the ACCOUNTING option. For more information on the record structure used by acct(), see /usr/include/sys/acct.h and acct(5). This call is permitted only to the superuser. 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. RETURN VALUES Upon successful completion, the value 0 is returned; otherwise the value -1 is returned and the global variable errno is set to indicate the error. ERRORS acct() will fail if one of the following is true: [EPERM] The caller is not the superuser. [ENOTDIR] A component of the path prefix is not a directory. [ENAMETOOLONG] A component of a pathname exceeded NAME_MAX characters, or an entire pathname (including the terminating NUL) exceeded PATH_MAX bytes. [ENOENT] The named file does not exist. [EACCES] Search permission is denied for a component of the path prefix, or the pathname is not a regular file. [ELOOP] Too many symbolic links were encountered in translating 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. FreeBSD 14.1-RELEASE-p8 January 3, 2021 FreeBSD 14.1-RELEASE-p8