1 files changed, 201 insertions, 0 deletions

diff --git a/include/linux/acct.h b/include/linux/acct.h
new file mode 100644
index 000000000000..1993a3691768
--- /dev/null
+++ b/include/linux/acct.h
@@ -0,0 +1,201 @@
+/*
+ *  BSD Process Accounting for Linux - Definitions
+ *
+ *  Author: Marco van Wieringen (mvw@planets.elm.net)
+ *
+ *  This header file contains the definitions needed to implement
+ *  BSD-style process accounting. The kernel accounting code and all
+ *  user-level programs that try to do something useful with the
+ *  process accounting log must include this file.
+ *
+ *  Copyright (C) 1995 - 1997 Marco van Wieringen - ELM Consultancy B.V.
+ *
+ */
+
+#ifndef _LINUX_ACCT_H
+#define _LINUX_ACCT_H
+
+#include <linux/types.h>
+#include <asm/param.h>
+#include <asm/byteorder.h>
+
+/* 
+ *  comp_t is a 16-bit "floating" point number with a 3-bit base 8
+ *  exponent and a 13-bit fraction.
+ *  comp2_t is 24-bit with 5-bit base 2 exponent and 20 bit fraction
+ *  (leading 1 not stored).
+ *  See linux/kernel/acct.c for the specific encoding systems used.
+ */
+
+typedef __u16   comp_t;
+typedef __u32   comp2_t;
+
+/*
+ *   accounting file record
+ *
+ *   This structure contains all of the information written out to the
+ *   process accounting file whenever a process exits.
+ */
+
+#define ACCT_COMM       16
+
+struct acct
+{
+        char            ac_flag;                /* Flags */
+        char            ac_version;             /* Always set to ACCT_VERSION */
+        /* for binary compatibility back until 2.0 */
+        __u16           ac_uid16;               /* LSB of Real User ID */
+        __u16           ac_gid16;               /* LSB of Real Group ID */
+        __u16           ac_tty;                 /* Control Terminal */
+        __u32           ac_btime;               /* Process Creation Time */
+        comp_t          ac_utime;               /* User Time */
+        comp_t          ac_stime;               /* System Time */
+        comp_t          ac_etime;               /* Elapsed Time */
+        comp_t          ac_mem;                 /* Average Memory Usage */
+        comp_t          ac_io;                  /* Chars Transferred */
+        comp_t          ac_rw;                  /* Blocks Read or Written */
+        comp_t          ac_minflt;              /* Minor Pagefaults */
+        comp_t          ac_majflt;              /* Major Pagefaults */
+        comp_t          ac_swaps;               /* Number of Swaps */
+/* m68k had no padding here. */
+#if !defined(CONFIG_M68K) || !defined(__KERNEL__)
+        __u16           ac_ahz;                 /* AHZ */
+#endif
+        __u32           ac_exitcode;            /* Exitcode */
+        char            ac_comm[ACCT_COMM + 1]; /* Command Name */
+        __u8            ac_etime_hi;            /* Elapsed Time MSB */
+        __u16           ac_etime_lo;            /* Elapsed Time LSB */
+        __u32           ac_uid;                 /* Real User ID */
+        __u32           ac_gid;                 /* Real Group ID */
+};
+
+struct acct_v3
+{
+        char            ac_flag;                /* Flags */
+        char            ac_version;             /* Always set to ACCT_VERSION */
+        __u16           ac_tty;                 /* Control Terminal */
+        __u32           ac_exitcode;            /* Exitcode */
+        __u32           ac_uid;                 /* Real User ID */
+        __u32           ac_gid;                 /* Real Group ID */
+        __u32           ac_pid;                 /* Process ID */
+        __u32           ac_ppid;                /* Parent Process ID */
+        __u32           ac_btime;               /* Process Creation Time */
+#ifdef __KERNEL__
+        __u32           ac_etime;               /* Elapsed Time */
+#else
+        float           ac_etime;               /* Elapsed Time */
+#endif
+        comp_t          ac_utime;               /* User Time */
+        comp_t          ac_stime;               /* System Time */
+        comp_t          ac_mem;                 /* Average Memory Usage */
+        comp_t          ac_io;                  /* Chars Transferred */
+        comp_t          ac_rw;                  /* Blocks Read or Written */
+        comp_t          ac_minflt;              /* Minor Pagefaults */
+        comp_t          ac_majflt;              /* Major Pagefaults */
+        comp_t          ac_swaps;               /* Number of Swaps */
+        char            ac_comm[ACCT_COMM];     /* Command Name */
+};
+
+/*
+ *  accounting flags
+ */
+                                /* bit set when the process ... */
+#define AFORK           0x01    /* ... executed fork, but did not exec */
+#define ASU             0x02    /* ... used super-user privileges */
+#define ACOMPAT         0x04    /* ... used compatibility mode (VAX only not used) */
+#define ACORE           0x08    /* ... dumped core */
+#define AXSIG           0x10    /* ... was killed by a signal */
+
+#ifdef __BIG_ENDIAN
+#define ACCT_BYTEORDER  0x80    /* accounting file is big endian */
+#else
+#define ACCT_BYTEORDER  0x00    /* accounting file is little endian */
+#endif
+
+#ifdef __KERNEL__
+
+#include <linux/config.h>
+
+#ifdef CONFIG_BSD_PROCESS_ACCT
+struct super_block;
+extern void acct_auto_close(struct super_block *sb);
+extern void acct_process(long exitcode);
+extern void acct_update_integrals(struct task_struct *tsk);
+extern void acct_clear_integrals(struct task_struct *tsk);
+#else
+#define acct_auto_close(x)      do { } while (0)
+#define acct_process(x)         do { } while (0)
+#define acct_update_integrals(x)                do { } while (0)
+#define acct_clear_integrals(task)      do { } while (0)
+#endif
+
+/*
+ * ACCT_VERSION numbers as yet defined:
+ * 0: old format (until 2.6.7) with 16 bit uid/gid
+ * 1: extended variant (binary compatible on M68K)
+ * 2: extended variant (binary compatible on everything except M68K)
+ * 3: new binary incompatible format (64 bytes)
+ * 4: new binary incompatible format (128 bytes)
+ * 5: new binary incompatible format (128 bytes, second half)
+ *
+ */
+
+#ifdef CONFIG_BSD_PROCESS_ACCT_V3
+#define ACCT_VERSION    3
+#define AHZ             100
+typedef struct acct_v3 acct_t;
+#else
+#ifdef CONFIG_M68K
+#define ACCT_VERSION    1
+#else
+#define ACCT_VERSION    2
+#endif
+#define AHZ             (USER_HZ)
+typedef struct acct acct_t;
+#endif
+
+#else
+#define ACCT_VERSION    2
+#define AHZ             (HZ)
+#endif  /* __KERNEL */
+
+#ifdef __KERNEL__
+/*
+ * Yet another set of HZ to *HZ helper functions.
+ * See <linux/times.h> for the original.
+ */
+
+static inline u32 jiffies_to_AHZ(unsigned long x)
+{
+#if (TICK_NSEC % (NSEC_PER_SEC / AHZ)) == 0
+        return x / (HZ / USER_HZ);
+#else
+        u64 tmp = (u64)x * TICK_NSEC;
+        do_div(tmp, (NSEC_PER_SEC / AHZ));
+        return (long)tmp;
+#endif
+}
+
+static inline u64 nsec_to_AHZ(u64 x)
+{
+#if (NSEC_PER_SEC % AHZ) == 0
+        do_div(x, (NSEC_PER_SEC / AHZ));
+#elif (AHZ % 512) == 0
+        x *= AHZ/512;
+        do_div(x, (NSEC_PER_SEC / 512));
+#else
+        /*
+         * max relative error 5.7e-8 (1.8s per year) for AHZ <= 1024,
+         * overflow after 64.99 years.
+         * exact for AHZ=60, 72, 90, 120, 144, 180, 300, 600, 900, ...
+         */
+        x *= 9;
+        do_div(x, (unsigned long)((9ull * NSEC_PER_SEC + (AHZ/2))
+                                  / AHZ));
+#endif
+        return x;
+}
+
+#endif  /* __KERNEL */
+
+#endif  /* _LINUX_ACCT_H */