ACCTSection: Linux Programmer's Manual (2)
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NAMEacct - switch process accounting on or off
#include <unistd.h> int acct(const char *filename);
DESCRIPTIONWhen 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 VALUEOn success, zero is returned. On error, -1 is returned, and errno is set appropriately.
- 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.
- filename points outside your accessible address space.
- Error writing to the file filename.
- filename is a directory.
- Too many symbolic links were encountered in resolving filename.
- filename was too long.
- The system limit on the total number of open files has been reached.
- The specified filename does not exist.
- Out of memory.
- 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.
- A component used as a directory in filename is not in fact a directory.
- The calling process has insufficient privilege to enable process accounting. On Linux the CAP_SYS_PACCT capability is required.
- filename refers to a file on a read-only file system.
- There are no more free file structures or we ran out of memory.
CONFORMING TOSVr4, 4.3BSD (but not POSIX).
NOTESNo accounting is produced for programs running when a crash occurs. In particular, nonterminating processes are never accounted for.