acct(2) -- Linux man page

 

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.