NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | CONFORMING TO | NOTES | SEE ALSO | COLOPHON

ACCT(2)                   Linux Programmer's Manual                  ACCT(2)

NAME         top

       acct - switch process accounting on or off

SYNOPSIS         top

       #include <unistd.h>

       int acct(const char *filename);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       acct():
           Since glibc 2.21:
               _DEFAULT_SOURCE
           In glibc 2.19 and 2.20:
               _DEFAULT_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)
           Up to and including glibc 2.19:
               _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)

DESCRIPTION         top

       The acct() system call enables or disables process accounting.  If
       called with the name of an existing file as its argument, accounting
       is turned on, and records for each terminating process are appended
       to filename as it terminates.  An argument of NULL causes accounting
       to be turned off.

RETURN VALUE         top

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

ERRORS         top

       EACCES 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(7)), or 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.

       ENFILE The system-wide limit on the total number of open files has
              been reached.

       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 insufficient privilege to enable
              process accounting.  On Linux, the CAP_SYS_PACCT capability is
              required.

       EROFS  filename refers to a file on a read-only filesystem.

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

CONFORMING TO         top

       SVr4, 4.3BSD (but not POSIX).

NOTES         top

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

       The structure of the records written to the accounting file is
       described in acct(5).

SEE ALSO         top

       acct(5)

COLOPHON         top

       This page is part of release 4.08 of the Linux man-pages project.  A
       description of the project, information about reporting bugs, and the
       latest version of this page, can be found at
       https://www.kernel.org/doc/man-pages/.

Linux                            2016-03-15                          ACCT(2)