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acct - execution accounting file
#define AC_COMM_LEN 16
/*
* Accounting structure version 2 (current).
* The first byte is always zero.
* Time units are microseconds.
*/
struct acctv2 {
uint8_t ac_zero; /* zero identifies new version */
uint8_t ac_version; /* record version number */
uint16_t ac_len; /* record length */
char ac_comm[AC_COMM_LEN]; /* command name */
float ac_utime; /* user time */
float ac_stime; /* system time */
float ac_etime; /* elapsed time */
time_t ac_btime; /* starting time */
uid_t ac_uid; /* user id */
gid_t ac_gid; /* group id */
float ac_mem; /* average memory usage */
float ac_io; /* count of IO blocks */
__dev_t ac_tty; /* controlling tty */
uint16_t ac_len2; /* record length */
union {
__dev_t ac_align; /* force v1 compatible alignment */
#define AFORK 0x01 /* forked but not exec'ed */
/* ASU is no longer supported */
#define ASU 0x02 /* used super-user permissions */
#define ACOMPAT 0x04 /* used compatibility mode */
#define ACORE 0x08 /* dumped core */
#define AXSIG 0x10 /* killed by a signal */
#define ANVER 0x20 /* new record version */
uint8_t ac_flag; /* accounting flags */
} ac_trailer;
#define ac_flagx ac_trailer.ac_flag
};
If a terminated process was created by an execve(2), the name of the executed file (at most ten characters of it) is saved in the field Fa ac_comm and its status is saved by setting one of more of the following flags in Fa ac_flag : AFORK ACOMPAT ACORE and ASIG ASU is no longer supported. ANVER is always set in the above structure.
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