Name
acct — switch process accounting on or off
Synopsis
#include <unistd.h>
int
acct( |
const char * | filename); |
![[Note]](../stylesheet/note.png) |
Note | ||
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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, or search permission is denied for one of the directories in the path prefix of
filename(see also path_resolution(7)), orfilenameis not a regular file. - EFAULT
-
filenamepoints outside your accessible address space. - EIO
-
Error writing to the file
filename. - EISDIR
-
filenameis a directory. - ELOOP
-
Too many symbolic links were encountered in resolving
filename. - ENAMETOOLONG
-
filenamewas too long. - ENFILE
-
The system 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
filenameis not in fact a directory. - EPERM
-
The calling process has insufficient privilege to enable process accounting. On Linux the
CAP_SYS_PACCTcapability is required. - EROFS
-
filenamerefers to a file on a read-only file system. - EUSERS
-
There are no more free file structures or we ran out of memory.
NOTES
No accounting is produced for programs running when a crash occurs. In particular, non-terminating processes are never accounted for.