#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/acct.h>
+#include <linux/capability.h>
#include <linux/file.h>
#include <linux/tty.h>
#include <linux/security.h>
#include <linux/jiffies.h>
#include <linux/times.h>
#include <linux/syscalls.h>
+#include <linux/mount.h>
#include <asm/uaccess.h>
#include <asm/div64.h>
#include <linux/blkdev.h> /* sector_div */
}
/*
- * Close the old accouting file (if currently open) and then replace
+ * Close the old accounting file (if currently open) and then replace
* it with file (if non-NULL).
*
* NOTE: acct_globals.lock MUST be held on entry and exit.
add_timer(&acct_globals.timer);
}
if (old_acct) {
+ mnt_unpin(old_acct->f_vfsmnt);
spin_unlock(&acct_globals.lock);
do_acct_process(0, old_acct);
filp_close(old_acct, NULL);
}
}
-/*
- * sys_acct() is the only system call needed to implement process
- * accounting. It takes the name of the file where accounting records
- * should be written. If the filename is NULL, accounting will be
- * shutdown.
- */
-asmlinkage long sys_acct(const char __user *name)
+static int acct_on(char *name)
{
- struct file *file = NULL;
- char *tmp;
+ struct file *file;
int error;
- if (!capable(CAP_SYS_PACCT))
- return -EPERM;
+ /* Difference from BSD - they don't do O_APPEND */
+ file = filp_open(name, O_WRONLY|O_APPEND|O_LARGEFILE, 0);
+ if (IS_ERR(file))
+ return PTR_ERR(file);
- if (name) {
- tmp = getname(name);
- if (IS_ERR(tmp)) {
- return (PTR_ERR(tmp));
- }
- /* Difference from BSD - they don't do O_APPEND */
- file = filp_open(tmp, O_WRONLY|O_APPEND|O_LARGEFILE, 0);
- putname(tmp);
- if (IS_ERR(file)) {
- return (PTR_ERR(file));
- }
- if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
- filp_close(file, NULL);
- return (-EACCES);
- }
+ if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
+ filp_close(file, NULL);
+ return -EACCES;
+ }
- if (!file->f_op->write) {
- filp_close(file, NULL);
- return (-EIO);
- }
+ if (!file->f_op->write) {
+ filp_close(file, NULL);
+ return -EIO;
}
error = security_acct(file);
if (error) {
- if (file)
- filp_close(file, NULL);
+ filp_close(file, NULL);
return error;
}
spin_lock(&acct_globals.lock);
+ mnt_pin(file->f_vfsmnt);
acct_file_reopen(file);
spin_unlock(&acct_globals.lock);
- return (0);
+ mntput(file->f_vfsmnt); /* it's pinned, now give up active reference */
+
+ return 0;
}
-/*
- * If the accouting is turned on for a file in the filesystem pointed
- * to by sb, turn accouting off.
+/**
+ * sys_acct - enable/disable process accounting
+ * @name: file name for accounting records or NULL to shutdown accounting
+ *
+ * Returns 0 for success or negative errno values for failure.
+ *
+ * sys_acct() is the only system call needed to implement process
+ * accounting. It takes the name of the file where accounting records
+ * should be written. If the filename is NULL, accounting will be
+ * shutdown.
+ */
+asmlinkage long sys_acct(const char __user *name)
+{
+ int error;
+
+ if (!capable(CAP_SYS_PACCT))
+ return -EPERM;
+
+ if (name) {
+ char *tmp = getname(name);
+ if (IS_ERR(tmp))
+ return (PTR_ERR(tmp));
+ error = acct_on(tmp);
+ putname(tmp);
+ } else {
+ error = security_acct(NULL);
+ if (!error) {
+ spin_lock(&acct_globals.lock);
+ acct_file_reopen(NULL);
+ spin_unlock(&acct_globals.lock);
+ }
+ }
+ return error;
+}
+
+/**
+ * acct_auto_close - turn off a filesystem's accounting if it is on
+ * @m: vfsmount being shut down
+ *
+ * If the accounting is turned on for a file in the subtree pointed to
+ * to by m, turn accounting off. Done when m is about to die.
+ */
+void acct_auto_close_mnt(struct vfsmount *m)
+{
+ spin_lock(&acct_globals.lock);
+ if (acct_globals.file && acct_globals.file->f_vfsmnt == m)
+ acct_file_reopen(NULL);
+ spin_unlock(&acct_globals.lock);
+}
+
+/**
+ * acct_auto_close - turn off a filesystem's accounting if it is on
+ * @sb: super block for the filesystem
+ *
+ * If the accounting is turned on for a file in the filesystem pointed
+ * to by sb, turn accounting off.
*/
void acct_auto_close(struct super_block *sb)
{
spin_lock(&acct_globals.lock);
if (acct_globals.file &&
- acct_globals.file->f_dentry->d_inode->i_sb == sb) {
- acct_file_reopen((struct file *)NULL);
+ acct_globals.file->f_vfsmnt->mnt_sb == sb) {
+ acct_file_reopen(NULL);
}
spin_unlock(&acct_globals.lock);
}
u64 elapsed;
u64 run_time;
struct timespec uptime;
+ unsigned long jiffies;
/*
* First check to see if there is enough free_space to continue
#endif
do_div(elapsed, AHZ);
ac.ac_btime = xtime.tv_sec - elapsed;
- ac.ac_utime = encode_comp_t(jiffies_to_AHZ(
- current->signal->utime +
- current->group_leader->utime));
- ac.ac_stime = encode_comp_t(jiffies_to_AHZ(
- current->signal->stime +
- current->group_leader->stime));
+ jiffies = cputime_to_jiffies(cputime_add(current->group_leader->utime,
+ current->signal->utime));
+ ac.ac_utime = encode_comp_t(jiffies_to_AHZ(jiffies));
+ jiffies = cputime_to_jiffies(cputime_add(current->group_leader->stime,
+ current->signal->stime));
+ ac.ac_stime = encode_comp_t(jiffies_to_AHZ(jiffies));
/* we really need to bite the bullet and change layout */
ac.ac_uid = current->uid;
ac.ac_gid = current->gid;
set_fs(fs);
}
-/*
+/**
* acct_process - now just a wrapper around do_acct_process
+ * @exitcode: task exit code
+ *
+ * handles process accounting for an exiting task
*/
void acct_process(long exitcode)
{
}
-/*
- * acct_update_integrals
- * - update mm integral fields in task_struct
+/**
+ * acct_update_integrals - update mm integral fields in task_struct
+ * @tsk: task_struct for accounting
*/
void acct_update_integrals(struct task_struct *tsk)
{
if (likely(tsk->mm)) {
- long delta = tsk->stime - tsk->acct_stimexpd;
+ long delta =
+ cputime_to_jiffies(tsk->stime) - tsk->acct_stimexpd;
if (delta == 0)
return;
tsk->acct_stimexpd = tsk->stime;
- tsk->acct_rss_mem1 += delta * get_mm_counter(tsk->mm, rss);
+ tsk->acct_rss_mem1 += delta * get_mm_rss(tsk->mm);
tsk->acct_vm_mem1 += delta * tsk->mm->total_vm;
}
}
-/*
- * acct_clear_integrals
- * - clear the mm integral fields in task_struct
+/**
+ * acct_clear_integrals - clear the mm integral fields in task_struct
+ * @tsk: task_struct whose accounting fields are cleared
*/
void acct_clear_integrals(struct task_struct *tsk)
{
git.openpandora.org / pandora-kernel.git / blobdiff