2 * linux/fs/proc/array.c
4 * Copyright (C) 1992 by Linus Torvalds
5 * based on ideas by Darren Senn
8 * Michael. K. Johnson: stat,statm extensions.
9 * <johnsonm@stolaf.edu>
11 * Pauline Middelink : Made cmdline,envline only break at '\0's, to
12 * make sure SET_PROCTITLE works. Also removed
13 * bad '!' which forced address recalculation for
14 * EVERY character on the current page.
15 * <middelin@polyware.iaf.nl>
17 * Danny ter Haar : added cpuinfo
20 * Alessandro Rubini : profile extension.
21 * <rubini@ipvvis.unipv.it>
23 * Jeff Tranter : added BogoMips field to cpuinfo
24 * <Jeff_Tranter@Mitel.COM>
26 * Bruno Haible : remove 4K limit for the maps file
27 * <haible@ma2s2.mathematik.uni-karlsruhe.de>
29 * Yves Arrouye : remove removal of trailing spaces in get_array.
30 * <Yves.Arrouye@marin.fdn.fr>
32 * Jerome Forissier : added per-CPU time information to /proc/stat
33 * and /proc/<pid>/cpu extension
34 * <forissier@isia.cma.fr>
35 * - Incorporation and non-SMP safe operation
36 * of forissier patch in 2.1.78 by
37 * Hans Marcus <crowbar@concepts.nl>
39 * aeb@cwi.nl : /proc/partitions
42 * Alan Cox : security fixes.
43 * <Alan.Cox@linux.org>
45 * Al Viro : safe handling of mm_struct
47 * Gerhard Wichert : added BIGMEM support
48 * Siemens AG <Gerhard.Wichert@pdb.siemens.de>
50 * Al Viro & Jeff Garzik : moved most of the thing into base.c and
51 * : proc_misc.c. The rest may eventually go into
55 #include <linux/config.h>
56 #include <linux/types.h>
57 #include <linux/errno.h>
58 #include <linux/time.h>
59 #include <linux/kernel.h>
60 #include <linux/kernel_stat.h>
61 #include <linux/tty.h>
62 #include <linux/string.h>
63 #include <linux/mman.h>
64 #include <linux/proc_fs.h>
65 #include <linux/ioport.h>
67 #include <linux/hugetlb.h>
68 #include <linux/pagemap.h>
69 #include <linux/swap.h>
70 #include <linux/slab.h>
71 #include <linux/smp.h>
72 #include <linux/signal.h>
73 #include <linux/highmem.h>
74 #include <linux/file.h>
75 #include <linux/times.h>
76 #include <linux/vs_context.h>
77 #include <linux/vs_network.h>
78 #include <linux/vs_cvirt.h>
80 #include <asm/uaccess.h>
81 #include <asm/pgtable.h>
83 #include <asm/processor.h>
86 /* Gcc optimizes away "strlen(x)" for constant x */
87 #define ADDBUF(buffer, string) \
88 do { memcpy(buffer, string, strlen(string)); \
89 buffer += strlen(string); } while (0)
91 static inline char * task_name(struct task_struct *p, char * buf)
95 char tcomm[sizeof(p->comm)];
97 get_task_comm(tcomm, p);
99 ADDBUF(buf, "Name:\t");
103 unsigned char c = *name;
127 * The task state array is a strange "bitmap" of
128 * reasons to sleep. Thus "running" is zero, and
129 * you can test for combinations of others with
132 static const char *task_state_array[] = {
133 "R (running)", /* 0 */
134 "S (sleeping)", /* 1 */
135 "D (disk sleep)", /* 2 */
136 "T (stopped)", /* 4 */
137 "T (tracing stop)", /* 8 */
138 "Z (zombie)", /* 16 */
140 "H (on hold)" /* 64 */
143 static inline const char * get_task_state(struct task_struct *tsk)
145 unsigned int state = (tsk->state & (TASK_RUNNING |
147 TASK_UNINTERRUPTIBLE |
151 (tsk->exit_state & (EXIT_ZOMBIE |
153 const char **p = &task_state_array[0];
162 static inline char * task_state(struct task_struct *p, char *buffer)
164 struct group_info *group_info;
166 pid_t pid, ptgid, tppid, tgid;
168 read_lock(&tasklist_lock);
169 tgid = vx_map_tgid(p->tgid);
170 pid = vx_map_pid(p->pid);
171 ptgid = vx_map_pid(p->group_leader->real_parent->tgid);
172 tppid = vx_map_pid(p->parent->pid);
173 buffer += sprintf(buffer,
180 "Uid:\t%d\t%d\t%d\t%d\n"
181 "Gid:\t%d\t%d\t%d\t%d\n",
183 (p->sleep_avg/1024)*100/(1020000000/1024),
184 tgid, pid, (pid > 1) ? ptgid : 0,
185 pid_alive(p) && p->ptrace ? tppid : 0,
186 p->uid, p->euid, p->suid, p->fsuid,
187 p->gid, p->egid, p->sgid, p->fsgid);
188 read_unlock(&tasklist_lock);
190 buffer += sprintf(buffer,
193 p->files ? p->files->max_fds : 0);
195 group_info = p->group_info;
196 get_group_info(group_info);
199 for (g = 0; g < min(group_info->ngroups,NGROUPS_SMALL); g++)
200 buffer += sprintf(buffer, "%d ", GROUP_AT(group_info,g));
201 put_group_info(group_info);
203 buffer += sprintf(buffer, "\n");
207 static char * render_sigset_t(const char *header, sigset_t *set, char *buffer)
211 len = strlen(header);
212 memcpy(buffer, header, len);
220 if (sigismember(set, i+1)) x |= 1;
221 if (sigismember(set, i+2)) x |= 2;
222 if (sigismember(set, i+3)) x |= 4;
223 if (sigismember(set, i+4)) x |= 8;
224 *buffer++ = (x < 10 ? '0' : 'a' - 10) + x;
232 static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign,
235 struct k_sigaction *k;
238 k = p->sighand->action;
239 for (i = 1; i <= _NSIG; ++i, ++k) {
240 if (k->sa.sa_handler == SIG_IGN)
242 else if (k->sa.sa_handler != SIG_DFL)
247 static inline char * task_sig(struct task_struct *p, char *buffer)
249 sigset_t pending, shpending, blocked, ignored, caught;
252 sigemptyset(&pending);
253 sigemptyset(&shpending);
254 sigemptyset(&blocked);
255 sigemptyset(&ignored);
256 sigemptyset(&caught);
258 /* Gather all the data with the appropriate locks held */
259 read_lock(&tasklist_lock);
261 spin_lock_irq(&p->sighand->siglock);
262 pending = p->pending.signal;
263 shpending = p->signal->shared_pending.signal;
264 blocked = p->blocked;
265 collect_sigign_sigcatch(p, &ignored, &caught);
266 num_threads = atomic_read(&p->signal->count);
267 spin_unlock_irq(&p->sighand->siglock);
269 read_unlock(&tasklist_lock);
271 buffer += sprintf(buffer, "Threads:\t%d\n", num_threads);
273 /* render them all */
274 buffer = render_sigset_t("SigPnd:\t", &pending, buffer);
275 buffer = render_sigset_t("ShdPnd:\t", &shpending, buffer);
276 buffer = render_sigset_t("SigBlk:\t", &blocked, buffer);
277 buffer = render_sigset_t("SigIgn:\t", &ignored, buffer);
278 buffer = render_sigset_t("SigCgt:\t", &caught, buffer);
283 static inline char *task_cap(struct task_struct *p, char *buffer)
285 return buffer + sprintf(buffer, "CapInh:\t%016x\n"
288 cap_t(p->cap_inheritable),
289 cap_t(p->cap_permitted),
290 cap_t(p->cap_effective));
293 int proc_pid_status(struct task_struct *task, char * buffer)
295 char * orig = buffer;
296 #ifdef CONFIG_VSERVER_LEGACY
299 #ifdef CONFIG_VSERVER_LEGACYNET
302 struct mm_struct *mm = get_task_mm(task);
304 buffer = task_name(task, buffer);
305 buffer = task_state(task, buffer);
308 buffer = task_mem(mm, buffer);
311 buffer = task_sig(task, buffer);
312 buffer = task_cap(task, buffer);
314 if (task_vx_flags(task, VXF_INFO_HIDE, 0))
316 #ifdef CONFIG_VSERVER_LEGACY
317 buffer += sprintf (buffer,"s_context: %d\n", vx_task_xid(task));
318 vxi = task_get_vx_info(task);
320 buffer += sprintf (buffer,"ctxflags: %08llx\n"
321 ,(unsigned long long)vxi->vx_flags);
322 buffer += sprintf (buffer,"initpid: %d\n"
325 buffer += sprintf (buffer,"ctxflags: none\n");
326 buffer += sprintf (buffer,"initpid: none\n");
330 buffer += sprintf (buffer,"VxID: %d\n", vx_task_xid(task));
332 #ifdef CONFIG_VSERVER_LEGACYNET
333 nxi = task_get_nx_info(task);
337 buffer += sprintf (buffer,"ipv4root:");
338 for (i=0; i<nxi->nbipv4; i++){
339 buffer += sprintf (buffer," %08x/%08x"
344 buffer += sprintf (buffer,"ipv4root_bcast: %08x\n"
347 buffer += sprintf (buffer,"ipv4root: 0\n");
348 buffer += sprintf (buffer,"ipv4root_bcast: 0\n");
353 #if defined(CONFIG_ARCH_S390)
354 buffer = task_show_regs(task, buffer);
356 return buffer - orig;
359 static int do_task_stat(struct task_struct *task, char * buffer, int whole)
361 unsigned long vsize, eip, esp, wchan = ~0UL;
363 int tty_pgrp = -1, tty_nr = 0;
364 sigset_t sigign, sigcatch;
367 pid_t pid, ppid, pgid = -1, sid = -1;
369 struct mm_struct *mm;
370 unsigned long long start_time;
371 unsigned long cmin_flt = 0, cmaj_flt = 0;
372 unsigned long min_flt = 0, maj_flt = 0;
373 cputime_t cutime, cstime, utime, stime;
374 unsigned long rsslim = 0;
375 struct task_struct *t;
376 char tcomm[sizeof(task->comm)];
378 state = *get_task_state(task);
379 vsize = eip = esp = 0;
380 mm = get_task_mm(task);
382 vsize = task_vsize(mm);
383 eip = KSTK_EIP(task);
384 esp = KSTK_ESP(task);
387 get_task_comm(tcomm, task);
389 sigemptyset(&sigign);
390 sigemptyset(&sigcatch);
391 cutime = cstime = utime = stime = cputime_zero;
392 read_lock(&tasklist_lock);
394 spin_lock_irq(&task->sighand->siglock);
395 num_threads = atomic_read(&task->signal->count);
396 collect_sigign_sigcatch(task, &sigign, &sigcatch);
398 /* add up live thread stats at the group level */
402 min_flt += t->min_flt;
403 maj_flt += t->maj_flt;
404 utime = cputime_add(utime, t->utime);
405 stime = cputime_add(stime, t->stime);
410 spin_unlock_irq(&task->sighand->siglock);
413 if (task->signal->tty) {
414 tty_pgrp = task->signal->tty->pgrp;
415 tty_nr = new_encode_dev(tty_devnum(task->signal->tty));
417 pgid = process_group(task);
418 sid = task->signal->session;
419 cmin_flt = task->signal->cmin_flt;
420 cmaj_flt = task->signal->cmaj_flt;
421 cutime = task->signal->cutime;
422 cstime = task->signal->cstime;
423 rsslim = task->signal->rlim[RLIMIT_RSS].rlim_cur;
425 min_flt += task->signal->min_flt;
426 maj_flt += task->signal->maj_flt;
427 utime = cputime_add(utime, task->signal->utime);
428 stime = cputime_add(stime, task->signal->stime);
431 pid = vx_info_map_pid(task->vx_info, pid_alive(task) ? task->pid : 0);
432 ppid = (!(pid > 1)) ? 0 : vx_info_map_tgid(task->vx_info,
433 task->group_leader->real_parent->tgid);
434 pgid = vx_info_map_pid(task->vx_info, pgid);
436 read_unlock(&tasklist_lock);
438 if (!whole || num_threads<2)
439 wchan = get_wchan(task);
441 min_flt = task->min_flt;
442 maj_flt = task->maj_flt;
447 /* scale priority and nice values from timeslices to -20..20 */
448 /* to make it look like a "normal" Unix priority/nice value */
449 priority = task_prio(task);
450 nice = task_nice(task);
452 /* Temporary variable needed for gcc-2.96 */
453 /* convert timespec -> nsec*/
454 start_time = (unsigned long long)task->start_time.tv_sec * NSEC_PER_SEC
455 + task->start_time.tv_nsec;
457 /* convert nsec -> ticks */
458 start_time = nsec_to_clock_t(start_time);
460 /* fixup start time for virt uptime */
461 if (vx_flags(VXF_VIRT_UPTIME, 0)) {
462 unsigned long long bias =
463 current->vx_info->cvirt.bias_clock;
465 if (start_time > bias)
471 res = sprintf(buffer,"%d (%s) %c %d %d %d %d %d %lu %lu \
472 %lu %lu %lu %lu %lu %ld %ld %ld %ld %d %ld %llu %lu %ld %lu %lu %lu %lu %lu \
473 %lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %lu\n",
487 cputime_to_clock_t(utime),
488 cputime_to_clock_t(stime),
489 cputime_to_clock_t(cutime),
490 cputime_to_clock_t(cstime),
494 jiffies_to_clock_t(task->it_real_value),
497 mm ? mm->rss : 0, /* you might want to shift this left 3 */
499 mm ? mm->start_code : 0,
500 mm ? mm->end_code : 0,
501 mm ? mm->start_stack : 0,
504 /* The signal information here is obsolete.
505 * It must be decimal for Linux 2.0 compatibility.
506 * Use /proc/#/status for real-time signals.
508 task->pending.signal.sig[0] & 0x7fffffffUL,
509 task->blocked.sig[0] & 0x7fffffffUL,
510 sigign .sig[0] & 0x7fffffffUL,
511 sigcatch .sig[0] & 0x7fffffffUL,
524 int proc_tid_stat(struct task_struct *task, char * buffer)
526 return do_task_stat(task, buffer, 0);
529 int proc_tgid_stat(struct task_struct *task, char * buffer)
531 return do_task_stat(task, buffer, 1);
534 int proc_pid_statm(struct task_struct *task, char *buffer)
536 int size = 0, resident = 0, shared = 0, text = 0, lib = 0, data = 0;
537 struct mm_struct *mm = get_task_mm(task);
540 size = task_statm(mm, &shared, &text, &data, &resident);
544 return sprintf(buffer,"%d %d %d %d %d %d %d\n",
545 size, resident, shared, text, lib, data, 0);