When called with the name of an existing file as argument, accounting is turned
on, records for each terminating process are appended to filename as it
terminates. An argument of NULL causes accounting to be turned off.
Write permission is denied for the specified file, or
search permission is denied for one of the directories in the path prefix
of filename (see also path_resolution(2)), or
filename is not a regular file.
filename points outside your accessible address
Error writing to the file filename.
filename is a directory.
Too many symbolic links were encountered in resolving
filename was too long.
The system limit on the total number of open files has been
The specified filename does not exist.
Out of memory.
BSD process accounting has not been enabled when the
operating system kernel was compiled. The kernel configuration parameter
controlling this feature is CONFIG_BSD_PROCESS_ACCT.
A component used as a directory in filename is not
in fact a directory.
The calling process has insufficient privilege to enable
process accounting. On Linux the CAP_SYS_PACCT capability is
filename refers to a file on a read-only file
There are no more free file structures or we ran out of
SVr4 (but not POSIX). SVr4 documents an EBUSY error condition, but no EISDIR or
ENOSYS. Also AIX and HPUX document EBUSY (attempt is made to enable accounting
when it is already enabled), as does Solaris (attempt is made to enable
accounting using the same file that is currently being used).