/*
|
/*
|
* linux/kernel/acct.c
|
* linux/kernel/acct.c
|
*
|
*
|
* BSD Process Accounting for Linux
|
* BSD Process Accounting for Linux
|
*
|
*
|
* Author: Marco van Wieringen <mvw@planets.elm.net>
|
* Author: Marco van Wieringen <mvw@planets.elm.net>
|
*
|
*
|
* Some code based on ideas and code from:
|
* Some code based on ideas and code from:
|
* Thomas K. Dyas <tdyas@eden.rutgers.edu>
|
* Thomas K. Dyas <tdyas@eden.rutgers.edu>
|
*
|
*
|
* This file implements BSD-style process accounting. Whenever any
|
* This file implements BSD-style process accounting. Whenever any
|
* process exits, an accounting record of type "struct acct" is
|
* process exits, an accounting record of type "struct acct" is
|
* written to the file specified with the acct() system call. It is
|
* written to the file specified with the acct() system call. It is
|
* up to user-level programs to do useful things with the accounting
|
* up to user-level programs to do useful things with the accounting
|
* log. The kernel just provides the raw accounting information.
|
* log. The kernel just provides the raw accounting information.
|
*
|
*
|
* (C) Copyright 1995 - 1997 Marco van Wieringen - ELM Consultancy B.V.
|
* (C) Copyright 1995 - 1997 Marco van Wieringen - ELM Consultancy B.V.
|
*
|
*
|
* Plugged two leaks. 1) It didn't return acct_file into the free_filps if
|
* Plugged two leaks. 1) It didn't return acct_file into the free_filps if
|
* the file happened to be read-only. 2) If the accounting was suspended
|
* the file happened to be read-only. 2) If the accounting was suspended
|
* due to the lack of space it happily allowed to reopen it and completely
|
* due to the lack of space it happily allowed to reopen it and completely
|
* lost the old acct_file. 3/10/98, Al Viro.
|
* lost the old acct_file. 3/10/98, Al Viro.
|
*
|
*
|
* Now we silently close acct_file on attempt to reopen. Cleaned sys_acct().
|
* Now we silently close acct_file on attempt to reopen. Cleaned sys_acct().
|
* XTerms and EMACS are manifestations of pure evil. 21/10/98, AV.
|
* XTerms and EMACS are manifestations of pure evil. 21/10/98, AV.
|
*
|
*
|
* Fixed a nasty interaction with with sys_umount(). If the accointing
|
* Fixed a nasty interaction with with sys_umount(). If the accointing
|
* was suspeneded we failed to stop it on umount(). Messy.
|
* was suspeneded we failed to stop it on umount(). Messy.
|
* Another one: remount to readonly didn't stop accounting.
|
* Another one: remount to readonly didn't stop accounting.
|
* Question: what should we do if we have CAP_SYS_ADMIN but not
|
* Question: what should we do if we have CAP_SYS_ADMIN but not
|
* CAP_SYS_PACCT? Current code does the following: umount returns -EBUSY
|
* CAP_SYS_PACCT? Current code does the following: umount returns -EBUSY
|
* unless we are messing with the root. In that case we are getting a
|
* unless we are messing with the root. In that case we are getting a
|
* real mess with do_remount_sb(). 9/11/98, AV.
|
* real mess with do_remount_sb(). 9/11/98, AV.
|
*
|
*
|
* Fixed a bunch of races (and pair of leaks). Probably not the best way,
|
* Fixed a bunch of races (and pair of leaks). Probably not the best way,
|
* but this one obviously doesn't introduce deadlocks. Later. BTW, found
|
* but this one obviously doesn't introduce deadlocks. Later. BTW, found
|
* one race (and leak) in BSD implementation.
|
* one race (and leak) in BSD implementation.
|
* OK, that's better. ANOTHER race and leak in BSD variant. There always
|
* OK, that's better. ANOTHER race and leak in BSD variant. There always
|
* is one more bug... 10/11/98, AV.
|
* is one more bug... 10/11/98, AV.
|
*
|
*
|
* Oh, fsck... Oopsable SMP race in do_process_acct() - we must hold
|
* Oh, fsck... Oopsable SMP race in do_process_acct() - we must hold
|
* ->mmap_sem to walk the vma list of current->mm. Nasty, since it leaks
|
* ->mmap_sem to walk the vma list of current->mm. Nasty, since it leaks
|
* a struct file opened for write. Fixed. 2/6/2000, AV.
|
* a struct file opened for write. Fixed. 2/6/2000, AV.
|
*/
|
*/
|
|
|
#include <linux/config.h>
|
#include <linux/config.h>
|
#include <linux/errno.h>
|
#include <linux/errno.h>
|
#include <linux/kernel.h>
|
#include <linux/kernel.h>
|
|
|
#ifdef CONFIG_BSD_PROCESS_ACCT
|
#ifdef CONFIG_BSD_PROCESS_ACCT
|
#include <linux/mm.h>
|
#include <linux/mm.h>
|
#include <linux/slab.h>
|
#include <linux/slab.h>
|
#include <linux/acct.h>
|
#include <linux/acct.h>
|
#include <linux/smp_lock.h>
|
#include <linux/smp_lock.h>
|
#include <linux/file.h>
|
#include <linux/file.h>
|
#include <linux/tty.h>
|
#include <linux/tty.h>
|
|
|
#include <asm/uaccess.h>
|
#include <asm/uaccess.h>
|
|
|
/*
|
/*
|
* These constants control the amount of freespace that suspend and
|
* These constants control the amount of freespace that suspend and
|
* resume the process accounting system, and the time delay between
|
* resume the process accounting system, and the time delay between
|
* each check.
|
* each check.
|
* Turned into sysctl-controllable parameters. AV, 12/11/98
|
* Turned into sysctl-controllable parameters. AV, 12/11/98
|
*/
|
*/
|
|
|
int acct_parm[3] = {4, 2, 30};
|
int acct_parm[3] = {4, 2, 30};
|
#define RESUME (acct_parm[0]) /* >foo% free space - resume */
|
#define RESUME (acct_parm[0]) /* >foo% free space - resume */
|
#define SUSPEND (acct_parm[1]) /* <foo% free space - suspend */
|
#define SUSPEND (acct_parm[1]) /* <foo% free space - suspend */
|
#define ACCT_TIMEOUT (acct_parm[2]) /* foo second timeout between checks */
|
#define ACCT_TIMEOUT (acct_parm[2]) /* foo second timeout between checks */
|
|
|
/*
|
/*
|
* External references and all of the globals.
|
* External references and all of the globals.
|
*/
|
*/
|
|
|
static volatile int acct_active;
|
static volatile int acct_active;
|
static volatile int acct_needcheck;
|
static volatile int acct_needcheck;
|
static struct file *acct_file;
|
static struct file *acct_file;
|
static struct timer_list acct_timer;
|
static struct timer_list acct_timer;
|
static void do_acct_process(long, struct file *);
|
static void do_acct_process(long, struct file *);
|
|
|
/*
|
/*
|
* Called whenever the timer says to check the free space.
|
* Called whenever the timer says to check the free space.
|
*/
|
*/
|
static void acct_timeout(unsigned long unused)
|
static void acct_timeout(unsigned long unused)
|
{
|
{
|
acct_needcheck = 1;
|
acct_needcheck = 1;
|
}
|
}
|
|
|
/*
|
/*
|
* Check the amount of free space and suspend/resume accordingly.
|
* Check the amount of free space and suspend/resume accordingly.
|
*/
|
*/
|
static int check_free_space(struct file *file)
|
static int check_free_space(struct file *file)
|
{
|
{
|
struct statfs sbuf;
|
struct statfs sbuf;
|
int res;
|
int res;
|
int act;
|
int act;
|
|
|
lock_kernel();
|
lock_kernel();
|
res = acct_active;
|
res = acct_active;
|
if (!file || !acct_needcheck)
|
if (!file || !acct_needcheck)
|
goto out;
|
goto out;
|
unlock_kernel();
|
unlock_kernel();
|
|
|
/* May block */
|
/* May block */
|
if (vfs_statfs(file->f_dentry->d_inode->i_sb, &sbuf))
|
if (vfs_statfs(file->f_dentry->d_inode->i_sb, &sbuf))
|
return res;
|
return res;
|
|
|
if (sbuf.f_bavail <= SUSPEND * sbuf.f_blocks / 100)
|
if (sbuf.f_bavail <= SUSPEND * sbuf.f_blocks / 100)
|
act = -1;
|
act = -1;
|
else if (sbuf.f_bavail >= RESUME * sbuf.f_blocks / 100)
|
else if (sbuf.f_bavail >= RESUME * sbuf.f_blocks / 100)
|
act = 1;
|
act = 1;
|
else
|
else
|
act = 0;
|
act = 0;
|
|
|
/*
|
/*
|
* If some joker switched acct_file under us we'ld better be
|
* If some joker switched acct_file under us we'ld better be
|
* silent and _not_ touch anything.
|
* silent and _not_ touch anything.
|
*/
|
*/
|
lock_kernel();
|
lock_kernel();
|
if (file != acct_file) {
|
if (file != acct_file) {
|
if (act)
|
if (act)
|
res = act>0;
|
res = act>0;
|
goto out;
|
goto out;
|
}
|
}
|
|
|
if (acct_active) {
|
if (acct_active) {
|
if (act < 0) {
|
if (act < 0) {
|
acct_active = 0;
|
acct_active = 0;
|
printk(KERN_INFO "Process accounting paused\n");
|
printk(KERN_INFO "Process accounting paused\n");
|
}
|
}
|
} else {
|
} else {
|
if (act > 0) {
|
if (act > 0) {
|
acct_active = 1;
|
acct_active = 1;
|
printk(KERN_INFO "Process accounting resumed\n");
|
printk(KERN_INFO "Process accounting resumed\n");
|
}
|
}
|
}
|
}
|
|
|
del_timer(&acct_timer);
|
del_timer(&acct_timer);
|
acct_needcheck = 0;
|
acct_needcheck = 0;
|
acct_timer.expires = jiffies + ACCT_TIMEOUT*HZ;
|
acct_timer.expires = jiffies + ACCT_TIMEOUT*HZ;
|
add_timer(&acct_timer);
|
add_timer(&acct_timer);
|
res = acct_active;
|
res = acct_active;
|
out:
|
out:
|
unlock_kernel();
|
unlock_kernel();
|
return res;
|
return res;
|
}
|
}
|
|
|
/*
|
/*
|
* sys_acct() is the only system call needed to implement process
|
* sys_acct() is the only system call needed to implement process
|
* accounting. It takes the name of the file where accounting records
|
* accounting. It takes the name of the file where accounting records
|
* should be written. If the filename is NULL, accounting will be
|
* should be written. If the filename is NULL, accounting will be
|
* shutdown.
|
* shutdown.
|
*/
|
*/
|
asmlinkage long sys_acct(const char *name)
|
asmlinkage long sys_acct(const char *name)
|
{
|
{
|
struct file *file = NULL, *old_acct = NULL;
|
struct file *file = NULL, *old_acct = NULL;
|
char *tmp;
|
char *tmp;
|
int error;
|
int error;
|
|
|
if (!capable(CAP_SYS_PACCT))
|
if (!capable(CAP_SYS_PACCT))
|
return -EPERM;
|
return -EPERM;
|
|
|
if (name) {
|
if (name) {
|
tmp = getname(name);
|
tmp = getname(name);
|
error = PTR_ERR(tmp);
|
error = PTR_ERR(tmp);
|
if (IS_ERR(tmp))
|
if (IS_ERR(tmp))
|
goto out;
|
goto out;
|
/* Difference from BSD - they don't do O_APPEND */
|
/* Difference from BSD - they don't do O_APPEND */
|
file = filp_open(tmp, O_WRONLY|O_APPEND, 0);
|
file = filp_open(tmp, O_WRONLY|O_APPEND, 0);
|
putname(tmp);
|
putname(tmp);
|
if (IS_ERR(file)) {
|
if (IS_ERR(file)) {
|
error = PTR_ERR(file);
|
error = PTR_ERR(file);
|
goto out;
|
goto out;
|
}
|
}
|
error = -EACCES;
|
error = -EACCES;
|
if (!S_ISREG(file->f_dentry->d_inode->i_mode))
|
if (!S_ISREG(file->f_dentry->d_inode->i_mode))
|
goto out_err;
|
goto out_err;
|
|
|
error = -EIO;
|
error = -EIO;
|
if (!file->f_op->write)
|
if (!file->f_op->write)
|
goto out_err;
|
goto out_err;
|
}
|
}
|
|
|
error = 0;
|
error = 0;
|
lock_kernel();
|
lock_kernel();
|
if (acct_file) {
|
if (acct_file) {
|
old_acct = acct_file;
|
old_acct = acct_file;
|
del_timer(&acct_timer);
|
del_timer(&acct_timer);
|
acct_active = 0;
|
acct_active = 0;
|
acct_needcheck = 0;
|
acct_needcheck = 0;
|
acct_file = NULL;
|
acct_file = NULL;
|
}
|
}
|
if (name) {
|
if (name) {
|
acct_file = file;
|
acct_file = file;
|
acct_needcheck = 0;
|
acct_needcheck = 0;
|
acct_active = 1;
|
acct_active = 1;
|
/* It's been deleted if it was used before so this is safe */
|
/* It's been deleted if it was used before so this is safe */
|
init_timer(&acct_timer);
|
init_timer(&acct_timer);
|
acct_timer.function = acct_timeout;
|
acct_timer.function = acct_timeout;
|
acct_timer.expires = jiffies + ACCT_TIMEOUT*HZ;
|
acct_timer.expires = jiffies + ACCT_TIMEOUT*HZ;
|
add_timer(&acct_timer);
|
add_timer(&acct_timer);
|
}
|
}
|
unlock_kernel();
|
unlock_kernel();
|
if (old_acct) {
|
if (old_acct) {
|
do_acct_process(0,old_acct);
|
do_acct_process(0,old_acct);
|
filp_close(old_acct, NULL);
|
filp_close(old_acct, NULL);
|
}
|
}
|
out:
|
out:
|
return error;
|
return error;
|
out_err:
|
out_err:
|
filp_close(file, NULL);
|
filp_close(file, NULL);
|
goto out;
|
goto out;
|
}
|
}
|
|
|
void acct_auto_close(kdev_t dev)
|
void acct_auto_close(kdev_t dev)
|
{
|
{
|
lock_kernel();
|
lock_kernel();
|
if (acct_file && acct_file->f_dentry->d_inode->i_dev == dev)
|
if (acct_file && acct_file->f_dentry->d_inode->i_dev == dev)
|
sys_acct(NULL);
|
sys_acct(NULL);
|
unlock_kernel();
|
unlock_kernel();
|
}
|
}
|
|
|
/*
|
/*
|
* encode an unsigned long into a comp_t
|
* encode an unsigned long into a comp_t
|
*
|
*
|
* This routine has been adopted from the encode_comp_t() function in
|
* This routine has been adopted from the encode_comp_t() function in
|
* the kern_acct.c file of the FreeBSD operating system. The encoding
|
* the kern_acct.c file of the FreeBSD operating system. The encoding
|
* is a 13-bit fraction with a 3-bit (base 8) exponent.
|
* is a 13-bit fraction with a 3-bit (base 8) exponent.
|
*/
|
*/
|
|
|
#define MANTSIZE 13 /* 13 bit mantissa. */
|
#define MANTSIZE 13 /* 13 bit mantissa. */
|
#define EXPSIZE 3 /* Base 8 (3 bit) exponent. */
|
#define EXPSIZE 3 /* Base 8 (3 bit) exponent. */
|
#define MAXFRACT ((1 << MANTSIZE) - 1) /* Maximum fractional value. */
|
#define MAXFRACT ((1 << MANTSIZE) - 1) /* Maximum fractional value. */
|
|
|
static comp_t encode_comp_t(unsigned long value)
|
static comp_t encode_comp_t(unsigned long value)
|
{
|
{
|
int exp, rnd;
|
int exp, rnd;
|
|
|
exp = rnd = 0;
|
exp = rnd = 0;
|
while (value > MAXFRACT) {
|
while (value > MAXFRACT) {
|
rnd = value & (1 << (EXPSIZE - 1)); /* Round up? */
|
rnd = value & (1 << (EXPSIZE - 1)); /* Round up? */
|
value >>= EXPSIZE; /* Base 8 exponent == 3 bit shift. */
|
value >>= EXPSIZE; /* Base 8 exponent == 3 bit shift. */
|
exp++;
|
exp++;
|
}
|
}
|
|
|
/*
|
/*
|
* If we need to round up, do it (and handle overflow correctly).
|
* If we need to round up, do it (and handle overflow correctly).
|
*/
|
*/
|
if (rnd && (++value > MAXFRACT)) {
|
if (rnd && (++value > MAXFRACT)) {
|
value >>= EXPSIZE;
|
value >>= EXPSIZE;
|
exp++;
|
exp++;
|
}
|
}
|
|
|
/*
|
/*
|
* Clean it up and polish it off.
|
* Clean it up and polish it off.
|
*/
|
*/
|
exp <<= MANTSIZE; /* Shift the exponent into place */
|
exp <<= MANTSIZE; /* Shift the exponent into place */
|
exp += value; /* and add on the mantissa. */
|
exp += value; /* and add on the mantissa. */
|
return exp;
|
return exp;
|
}
|
}
|
|
|
/*
|
/*
|
* Write an accounting entry for an exiting process
|
* Write an accounting entry for an exiting process
|
*
|
*
|
* The acct_process() call is the workhorse of the process
|
* The acct_process() call is the workhorse of the process
|
* accounting system. The struct acct is built here and then written
|
* accounting system. The struct acct is built here and then written
|
* into the accounting file. This function should only be called from
|
* into the accounting file. This function should only be called from
|
* do_exit().
|
* do_exit().
|
*/
|
*/
|
|
|
/*
|
/*
|
* do_acct_process does all actual work. Caller holds the reference to file.
|
* do_acct_process does all actual work. Caller holds the reference to file.
|
*/
|
*/
|
static void do_acct_process(long exitcode, struct file *file)
|
static void do_acct_process(long exitcode, struct file *file)
|
{
|
{
|
struct acct ac;
|
struct acct ac;
|
mm_segment_t fs;
|
mm_segment_t fs;
|
unsigned long vsize;
|
unsigned long vsize;
|
unsigned long flim;
|
unsigned long flim;
|
|
|
/*
|
/*
|
* First check to see if there is enough free_space to continue
|
* First check to see if there is enough free_space to continue
|
* the process accounting system.
|
* the process accounting system.
|
*/
|
*/
|
if (!check_free_space(file))
|
if (!check_free_space(file))
|
return;
|
return;
|
|
|
/*
|
/*
|
* Fill the accounting struct with the needed info as recorded
|
* Fill the accounting struct with the needed info as recorded
|
* by the different kernel functions.
|
* by the different kernel functions.
|
*/
|
*/
|
memset((caddr_t)&ac, 0, sizeof(struct acct));
|
memset((caddr_t)&ac, 0, sizeof(struct acct));
|
|
|
strncpy(ac.ac_comm, current->comm, ACCT_COMM);
|
strncpy(ac.ac_comm, current->comm, ACCT_COMM);
|
ac.ac_comm[ACCT_COMM - 1] = '\0';
|
ac.ac_comm[ACCT_COMM - 1] = '\0';
|
|
|
ac.ac_btime = CT_TO_SECS(current->start_time) + (xtime.tv_sec - (jiffies / HZ));
|
ac.ac_btime = CT_TO_SECS(current->start_time) + (xtime.tv_sec - (jiffies / HZ));
|
ac.ac_etime = encode_comp_t(jiffies - current->start_time);
|
ac.ac_etime = encode_comp_t(jiffies - current->start_time);
|
ac.ac_utime = encode_comp_t(current->times.tms_utime);
|
ac.ac_utime = encode_comp_t(current->times.tms_utime);
|
ac.ac_stime = encode_comp_t(current->times.tms_stime);
|
ac.ac_stime = encode_comp_t(current->times.tms_stime);
|
ac.ac_uid = current->uid;
|
ac.ac_uid = current->uid;
|
ac.ac_gid = current->gid;
|
ac.ac_gid = current->gid;
|
ac.ac_tty = (current->tty) ? kdev_t_to_nr(current->tty->device) : 0;
|
ac.ac_tty = (current->tty) ? kdev_t_to_nr(current->tty->device) : 0;
|
|
|
ac.ac_flag = 0;
|
ac.ac_flag = 0;
|
if (current->flags & PF_FORKNOEXEC)
|
if (current->flags & PF_FORKNOEXEC)
|
ac.ac_flag |= AFORK;
|
ac.ac_flag |= AFORK;
|
if (current->flags & PF_SUPERPRIV)
|
if (current->flags & PF_SUPERPRIV)
|
ac.ac_flag |= ASU;
|
ac.ac_flag |= ASU;
|
if (current->flags & PF_DUMPCORE)
|
if (current->flags & PF_DUMPCORE)
|
ac.ac_flag |= ACORE;
|
ac.ac_flag |= ACORE;
|
if (current->flags & PF_SIGNALED)
|
if (current->flags & PF_SIGNALED)
|
ac.ac_flag |= AXSIG;
|
ac.ac_flag |= AXSIG;
|
|
|
vsize = 0;
|
vsize = 0;
|
if (current->mm) {
|
if (current->mm) {
|
struct vm_area_struct *vma;
|
struct vm_area_struct *vma;
|
down_read(¤t->mm->mmap_sem);
|
down_read(¤t->mm->mmap_sem);
|
vma = current->mm->mmap;
|
vma = current->mm->mmap;
|
while (vma) {
|
while (vma) {
|
vsize += vma->vm_end - vma->vm_start;
|
vsize += vma->vm_end - vma->vm_start;
|
vma = vma->vm_next;
|
vma = vma->vm_next;
|
}
|
}
|
up_read(¤t->mm->mmap_sem);
|
up_read(¤t->mm->mmap_sem);
|
}
|
}
|
vsize = vsize / 1024;
|
vsize = vsize / 1024;
|
ac.ac_mem = encode_comp_t(vsize);
|
ac.ac_mem = encode_comp_t(vsize);
|
ac.ac_io = encode_comp_t(0 /* current->io_usage */); /* %% */
|
ac.ac_io = encode_comp_t(0 /* current->io_usage */); /* %% */
|
ac.ac_rw = encode_comp_t(ac.ac_io / 1024);
|
ac.ac_rw = encode_comp_t(ac.ac_io / 1024);
|
ac.ac_minflt = encode_comp_t(current->min_flt);
|
ac.ac_minflt = encode_comp_t(current->min_flt);
|
ac.ac_majflt = encode_comp_t(current->maj_flt);
|
ac.ac_majflt = encode_comp_t(current->maj_flt);
|
ac.ac_swaps = encode_comp_t(current->nswap);
|
ac.ac_swaps = encode_comp_t(current->nswap);
|
ac.ac_exitcode = exitcode;
|
ac.ac_exitcode = exitcode;
|
|
|
/*
|
/*
|
* Kernel segment override to datasegment and write it
|
* Kernel segment override to datasegment and write it
|
* to the accounting file.
|
* to the accounting file.
|
*/
|
*/
|
fs = get_fs();
|
fs = get_fs();
|
set_fs(KERNEL_DS);
|
set_fs(KERNEL_DS);
|
/*
|
/*
|
* Accounting records are not subject to resource limits.
|
* Accounting records are not subject to resource limits.
|
*/
|
*/
|
flim = current->rlim[RLIMIT_FSIZE].rlim_cur;
|
flim = current->rlim[RLIMIT_FSIZE].rlim_cur;
|
current->rlim[RLIMIT_FSIZE].rlim_cur = RLIM_INFINITY;
|
current->rlim[RLIMIT_FSIZE].rlim_cur = RLIM_INFINITY;
|
file->f_op->write(file, (char *)&ac,
|
file->f_op->write(file, (char *)&ac,
|
sizeof(struct acct), &file->f_pos);
|
sizeof(struct acct), &file->f_pos);
|
current->rlim[RLIMIT_FSIZE].rlim_cur = flim;
|
current->rlim[RLIMIT_FSIZE].rlim_cur = flim;
|
set_fs(fs);
|
set_fs(fs);
|
}
|
}
|
|
|
/*
|
/*
|
* acct_process - now just a wrapper around do_acct_process
|
* acct_process - now just a wrapper around do_acct_process
|
*/
|
*/
|
int acct_process(long exitcode)
|
int acct_process(long exitcode)
|
{
|
{
|
struct file *file = NULL;
|
struct file *file = NULL;
|
lock_kernel();
|
lock_kernel();
|
if (acct_file) {
|
if (acct_file) {
|
file = acct_file;
|
file = acct_file;
|
get_file(file);
|
get_file(file);
|
unlock_kernel();
|
unlock_kernel();
|
do_acct_process(exitcode, file);
|
do_acct_process(exitcode, file);
|
fput(file);
|
fput(file);
|
} else
|
} else
|
unlock_kernel();
|
unlock_kernel();
|
return 0;
|
return 0;
|
}
|
}
|
|
|
#else
|
#else
|
/*
|
/*
|
* Dummy system call when BSD process accounting is not configured
|
* Dummy system call when BSD process accounting is not configured
|
* into the kernel.
|
* into the kernel.
|
*/
|
*/
|
|
|
asmlinkage long sys_acct(const char * filename)
|
asmlinkage long sys_acct(const char * filename)
|
{
|
{
|
return -ENOSYS;
|
return -ENOSYS;
|
}
|
}
|
#endif
|
#endif
|
|
|
