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-rw-r--r--kernel/acct.c77
1 files changed, 39 insertions, 38 deletions
diff --git a/kernel/acct.c b/kernel/acct.c
index fc71c1304977..72d4760c8da8 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -75,7 +75,8 @@ int acct_parm[3] = {4, 2, 30};
75/* 75/*
76 * External references and all of the globals. 76 * External references and all of the globals.
77 */ 77 */
78static void do_acct_process(struct pid_namespace *ns, struct file *); 78static void do_acct_process(struct bsd_acct_struct *acct,
79 struct pid_namespace *ns, struct file *);
79 80
80/* 81/*
81 * This structure is used so that all the data protected by lock 82 * This structure is used so that all the data protected by lock
@@ -106,7 +107,7 @@ static void acct_timeout(unsigned long x)
106/* 107/*
107 * Check the amount of free space and suspend/resume accordingly. 108 * Check the amount of free space and suspend/resume accordingly.
108 */ 109 */
109static int check_free_space(struct file *file) 110static int check_free_space(struct bsd_acct_struct *acct, struct file *file)
110{ 111{
111 struct kstatfs sbuf; 112 struct kstatfs sbuf;
112 int res; 113 int res;
@@ -115,8 +116,8 @@ static int check_free_space(struct file *file)
115 sector_t suspend; 116 sector_t suspend;
116 117
117 spin_lock(&acct_lock); 118 spin_lock(&acct_lock);
118 res = acct_globals.active; 119 res = acct->active;
119 if (!file || !acct_globals.needcheck) 120 if (!file || !acct->needcheck)
120 goto out; 121 goto out;
121 spin_unlock(&acct_lock); 122 spin_unlock(&acct_lock);
122 123
@@ -137,33 +138,33 @@ static int check_free_space(struct file *file)
137 act = 0; 138 act = 0;
138 139
139 /* 140 /*
140 * If some joker switched acct_globals.file under us we'ld better be 141 * If some joker switched acct->file under us we'ld better be
141 * silent and _not_ touch anything. 142 * silent and _not_ touch anything.
142 */ 143 */
143 spin_lock(&acct_lock); 144 spin_lock(&acct_lock);
144 if (file != acct_globals.file) { 145 if (file != acct->file) {
145 if (act) 146 if (act)
146 res = act>0; 147 res = act>0;
147 goto out; 148 goto out;
148 } 149 }
149 150
150 if (acct_globals.active) { 151 if (acct->active) {
151 if (act < 0) { 152 if (act < 0) {
152 acct_globals.active = 0; 153 acct->active = 0;
153 printk(KERN_INFO "Process accounting paused\n"); 154 printk(KERN_INFO "Process accounting paused\n");
154 } 155 }
155 } else { 156 } else {
156 if (act > 0) { 157 if (act > 0) {
157 acct_globals.active = 1; 158 acct->active = 1;
158 printk(KERN_INFO "Process accounting resumed\n"); 159 printk(KERN_INFO "Process accounting resumed\n");
159 } 160 }
160 } 161 }
161 162
162 del_timer(&acct_globals.timer); 163 del_timer(&acct->timer);
163 acct_globals.needcheck = 0; 164 acct->needcheck = 0;
164 acct_globals.timer.expires = jiffies + ACCT_TIMEOUT*HZ; 165 acct->timer.expires = jiffies + ACCT_TIMEOUT*HZ;
165 add_timer(&acct_globals.timer); 166 add_timer(&acct->timer);
166 res = acct_globals.active; 167 res = acct->active;
167out: 168out:
168 spin_unlock(&acct_lock); 169 spin_unlock(&acct_lock);
169 return res; 170 return res;
@@ -175,34 +176,33 @@ out:
175 * 176 *
176 * NOTE: acct_lock MUST be held on entry and exit. 177 * NOTE: acct_lock MUST be held on entry and exit.
177 */ 178 */
178static void acct_file_reopen(struct file *file) 179static void acct_file_reopen(struct bsd_acct_struct *acct, struct file *file)
179{ 180{
180 struct file *old_acct = NULL; 181 struct file *old_acct = NULL;
181 struct pid_namespace *old_ns = NULL; 182 struct pid_namespace *old_ns = NULL;
182 183
183 if (acct_globals.file) { 184 if (acct->file) {
184 old_acct = acct_globals.file; 185 old_acct = acct->file;
185 old_ns = acct_globals.ns; 186 old_ns = acct->ns;
186 del_timer(&acct_globals.timer); 187 del_timer(&acct->timer);
187 acct_globals.active = 0; 188 acct->active = 0;
188 acct_globals.needcheck = 0; 189 acct->needcheck = 0;
189 acct_globals.file = NULL; 190 acct->file = NULL;
190 } 191 }
191 if (file) { 192 if (file) {
192 acct_globals.file = file; 193 acct->file = file;
193 acct_globals.ns = get_pid_ns(task_active_pid_ns(current)); 194 acct->ns = get_pid_ns(task_active_pid_ns(current));
194 acct_globals.needcheck = 0; 195 acct->needcheck = 0;
195 acct_globals.active = 1; 196 acct->active = 1;
196 /* It's been deleted if it was used before so this is safe */ 197 /* It's been deleted if it was used before so this is safe */
197 setup_timer(&acct_globals.timer, acct_timeout, 198 setup_timer(&acct->timer, acct_timeout, (unsigned long)acct);
198 (unsigned long)&acct_globals); 199 acct->timer.expires = jiffies + ACCT_TIMEOUT*HZ;
199 acct_globals.timer.expires = jiffies + ACCT_TIMEOUT*HZ; 200 add_timer(&acct->timer);
200 add_timer(&acct_globals.timer);
201 } 201 }
202 if (old_acct) { 202 if (old_acct) {
203 mnt_unpin(old_acct->f_path.mnt); 203 mnt_unpin(old_acct->f_path.mnt);
204 spin_unlock(&acct_lock); 204 spin_unlock(&acct_lock);
205 do_acct_process(old_ns, old_acct); 205 do_acct_process(acct, old_ns, old_acct);
206 filp_close(old_acct, NULL); 206 filp_close(old_acct, NULL);
207 put_pid_ns(old_ns); 207 put_pid_ns(old_ns);
208 spin_lock(&acct_lock); 208 spin_lock(&acct_lock);
@@ -237,7 +237,7 @@ static int acct_on(char *name)
237 237
238 spin_lock(&acct_lock); 238 spin_lock(&acct_lock);
239 mnt_pin(file->f_path.mnt); 239 mnt_pin(file->f_path.mnt);
240 acct_file_reopen(file); 240 acct_file_reopen(&acct_globals, file);
241 spin_unlock(&acct_lock); 241 spin_unlock(&acct_lock);
242 242
243 mntput(file->f_path.mnt); /* it's pinned, now give up active reference */ 243 mntput(file->f_path.mnt); /* it's pinned, now give up active reference */
@@ -273,7 +273,7 @@ asmlinkage long sys_acct(const char __user *name)
273 error = security_acct(NULL); 273 error = security_acct(NULL);
274 if (!error) { 274 if (!error) {
275 spin_lock(&acct_lock); 275 spin_lock(&acct_lock);
276 acct_file_reopen(NULL); 276 acct_file_reopen(&acct_globals, NULL);
277 spin_unlock(&acct_lock); 277 spin_unlock(&acct_lock);
278 } 278 }
279 } 279 }
@@ -291,7 +291,7 @@ void acct_auto_close_mnt(struct vfsmount *m)
291{ 291{
292 spin_lock(&acct_lock); 292 spin_lock(&acct_lock);
293 if (acct_globals.file && acct_globals.file->f_path.mnt == m) 293 if (acct_globals.file && acct_globals.file->f_path.mnt == m)
294 acct_file_reopen(NULL); 294 acct_file_reopen(&acct_globals, NULL);
295 spin_unlock(&acct_lock); 295 spin_unlock(&acct_lock);
296} 296}
297 297
@@ -307,7 +307,7 @@ void acct_auto_close(struct super_block *sb)
307 spin_lock(&acct_lock); 307 spin_lock(&acct_lock);
308 if (acct_globals.file && 308 if (acct_globals.file &&
309 acct_globals.file->f_path.mnt->mnt_sb == sb) { 309 acct_globals.file->f_path.mnt->mnt_sb == sb) {
310 acct_file_reopen(NULL); 310 acct_file_reopen(&acct_globals, NULL);
311 } 311 }
312 spin_unlock(&acct_lock); 312 spin_unlock(&acct_lock);
313} 313}
@@ -426,7 +426,8 @@ static u32 encode_float(u64 value)
426/* 426/*
427 * do_acct_process does all actual work. Caller holds the reference to file. 427 * do_acct_process does all actual work. Caller holds the reference to file.
428 */ 428 */
429static void do_acct_process(struct pid_namespace *ns, struct file *file) 429static void do_acct_process(struct bsd_acct_struct *acct,
430 struct pid_namespace *ns, struct file *file)
430{ 431{
431 struct pacct_struct *pacct = &current->signal->pacct; 432 struct pacct_struct *pacct = &current->signal->pacct;
432 acct_t ac; 433 acct_t ac;
@@ -441,7 +442,7 @@ static void do_acct_process(struct pid_namespace *ns, struct file *file)
441 * First check to see if there is enough free_space to continue 442 * First check to see if there is enough free_space to continue
442 * the process accounting system. 443 * the process accounting system.
443 */ 444 */
444 if (!check_free_space(file)) 445 if (!check_free_space(acct, file))
445 return; 446 return;
446 447
447 /* 448 /*
@@ -604,7 +605,7 @@ void acct_process(void)
604 ns = get_pid_ns(acct_globals.ns); 605 ns = get_pid_ns(acct_globals.ns);
605 spin_unlock(&acct_lock); 606 spin_unlock(&acct_lock);
606 607
607 do_acct_process(ns, file); 608 do_acct_process(&acct_globals, ns, file);
608 fput(file); 609 fput(file);
609 put_pid_ns(ns); 610 put_pid_ns(ns);
610} 611}