acct(2)acct(2)NAMEacct() - enable or disable process accounting
The system call enables or disables the system's process accounting
routine. If the routine is enabled, an accounting record is written on
an accounting file for each process that terminates. Termination can
be caused by one of two things: an call or a signal (see exit(2) and
signal(5)). The calling process must have the privilege to use this
path points to a path name naming the accounting file. The accounting
file format is described in acct(4).
The accounting routine is enabled if path is nonzero and no errors
occur during the system call. It is disabled if path is zero and no
errors occur during the system call.
When the amount of free space on the file system containing the
accounting file falls below a configurable threshold, the system prints
a message on the console and disables process accounting. Another mes‐
sage is printed and the process accounting is re-enabled when the space
reaches a second configurable threshold.
If the size of the process accounting file reaches a configurable
limit, records for processes terminating after that point will be
silently lost. However, in that case the command would still sense
that process accounting is still enabled. This loss of records can be
prevented with the command. and are described in acctsh(1M)).
Some or all of the actions associated with this system call require the
privilege. Processes owned by the superuser have this privilege. Pro‐
cesses owned by other users may have this privilege, depending on sys‐
tem configuration. See privileges(5) for more information about privi‐
leged access on systems that support fine-grained privileges.
returns the following values:
is set to indicate the error.
If fails, is set to one of the following values.
The file named by
path is not an ordinary file.
An attempt is being made to enable accounting when it is already
path points to an illegal address. The reliable
detection of this error is implementation depen‐
Too many symbolic links were encountered in translating the path
The accounting file path name exceeds
bytes, or the length of a component of the path
name exceeds bytes while is in effect.
One or more components of the accounting file path name do not
A component of the path prefix is not a directory.
The calling process does not possess the
The named file resides on a read-only file system.
path points to a text file which is currently open.
SEE ALSOacct(1M), acctsh(1M), exit(2), acct(4), privileges(5), signal(5).