ACCT

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
CONFORMING TO
NOTES

NAME

acct − switch process accounting on or off

SYNOPSIS

#include <unistd.h>

int acct(const char *filename);

DESCRIPTION

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.

RETURN VALUE

On success, zero is returned. On error, −1 is returned, and errno is set appropriately.

ERRORS

EACCES

Write permission is denied for the specified file.

EACCES

The argument filename is not a regular file.

EFAULT

filename points outside your accessible address space.

EIO

Error writing to the file filename.

EISDIR

filename is a directory.

ELOOP

Too many symbolic links were encountered in resolving filename.

ENAMETOOLONG

filename was too long.

ENOENT

The specified filename does not exist.

ENOMEM

Out of memory.

ENOSYS

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.

ENOTDIR

A component used as a directory in filename is not in fact a directory.

EPERM

The calling process has no permission to enable process accounting.

EROFS

filename refers to a file on a read-only file system.

EUSERS

There are no more free file structures or we ran out of memory.

CONFORMING TO

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).

NOTES

No accounting is produced for programs running when a crash occurs. In particular, nonterminating processes are never accounted for.






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