11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * linux/fs/proc/array.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 1992 by Linus Torvalds 51da177e4SLinus Torvalds * based on ideas by Darren Senn 61da177e4SLinus Torvalds * 71da177e4SLinus Torvalds * Fixes: 81da177e4SLinus Torvalds * Michael. K. Johnson: stat,statm extensions. 91da177e4SLinus Torvalds * <johnsonm@stolaf.edu> 101da177e4SLinus Torvalds * 111da177e4SLinus Torvalds * Pauline Middelink : Made cmdline,envline only break at '\0's, to 121da177e4SLinus Torvalds * make sure SET_PROCTITLE works. Also removed 131da177e4SLinus Torvalds * bad '!' which forced address recalculation for 141da177e4SLinus Torvalds * EVERY character on the current page. 151da177e4SLinus Torvalds * <middelin@polyware.iaf.nl> 161da177e4SLinus Torvalds * 171da177e4SLinus Torvalds * Danny ter Haar : added cpuinfo 181da177e4SLinus Torvalds * <dth@cistron.nl> 191da177e4SLinus Torvalds * 201da177e4SLinus Torvalds * Alessandro Rubini : profile extension. 211da177e4SLinus Torvalds * <rubini@ipvvis.unipv.it> 221da177e4SLinus Torvalds * 231da177e4SLinus Torvalds * Jeff Tranter : added BogoMips field to cpuinfo 241da177e4SLinus Torvalds * <Jeff_Tranter@Mitel.COM> 251da177e4SLinus Torvalds * 261da177e4SLinus Torvalds * Bruno Haible : remove 4K limit for the maps file 271da177e4SLinus Torvalds * <haible@ma2s2.mathematik.uni-karlsruhe.de> 281da177e4SLinus Torvalds * 291da177e4SLinus Torvalds * Yves Arrouye : remove removal of trailing spaces in get_array. 301da177e4SLinus Torvalds * <Yves.Arrouye@marin.fdn.fr> 311da177e4SLinus Torvalds * 321da177e4SLinus Torvalds * Jerome Forissier : added per-CPU time information to /proc/stat 331da177e4SLinus Torvalds * and /proc/<pid>/cpu extension 341da177e4SLinus Torvalds * <forissier@isia.cma.fr> 351da177e4SLinus Torvalds * - Incorporation and non-SMP safe operation 361da177e4SLinus Torvalds * of forissier patch in 2.1.78 by 371da177e4SLinus Torvalds * Hans Marcus <crowbar@concepts.nl> 381da177e4SLinus Torvalds * 391da177e4SLinus Torvalds * aeb@cwi.nl : /proc/partitions 401da177e4SLinus Torvalds * 411da177e4SLinus Torvalds * 421da177e4SLinus Torvalds * Alan Cox : security fixes. 43526719baSAlan Cox * <alan@lxorguk.ukuu.org.uk> 441da177e4SLinus Torvalds * 451da177e4SLinus Torvalds * Al Viro : safe handling of mm_struct 461da177e4SLinus Torvalds * 471da177e4SLinus Torvalds * Gerhard Wichert : added BIGMEM support 481da177e4SLinus Torvalds * Siemens AG <Gerhard.Wichert@pdb.siemens.de> 491da177e4SLinus Torvalds * 501da177e4SLinus Torvalds * Al Viro & Jeff Garzik : moved most of the thing into base.c and 511da177e4SLinus Torvalds * : proc_misc.c. The rest may eventually go into 521da177e4SLinus Torvalds * : base.c too. 531da177e4SLinus Torvalds */ 541da177e4SLinus Torvalds 551da177e4SLinus Torvalds #include <linux/types.h> 561da177e4SLinus Torvalds #include <linux/errno.h> 571da177e4SLinus Torvalds #include <linux/time.h> 581da177e4SLinus Torvalds #include <linux/kernel.h> 591da177e4SLinus Torvalds #include <linux/kernel_stat.h> 601da177e4SLinus Torvalds #include <linux/tty.h> 611da177e4SLinus Torvalds #include <linux/string.h> 621da177e4SLinus Torvalds #include <linux/mman.h> 631da177e4SLinus Torvalds #include <linux/proc_fs.h> 641da177e4SLinus Torvalds #include <linux/ioport.h> 658ea02606SIngo Molnar #include <linux/uaccess.h> 668ea02606SIngo Molnar #include <linux/io.h> 671da177e4SLinus Torvalds #include <linux/mm.h> 681da177e4SLinus Torvalds #include <linux/hugetlb.h> 691da177e4SLinus Torvalds #include <linux/pagemap.h> 701da177e4SLinus Torvalds #include <linux/swap.h> 711da177e4SLinus Torvalds #include <linux/smp.h> 721da177e4SLinus Torvalds #include <linux/signal.h> 731da177e4SLinus Torvalds #include <linux/highmem.h> 741da177e4SLinus Torvalds #include <linux/file.h> 759f3acc31SAl Viro #include <linux/fdtable.h> 761da177e4SLinus Torvalds #include <linux/times.h> 771da177e4SLinus Torvalds #include <linux/cpuset.h> 784fb3a538SDipankar Sarma #include <linux/rcupdate.h> 7925890454SShailabh Nagar #include <linux/delayacct.h> 80ee992744SEric W. Biederman #include <linux/seq_file.h> 81b488893aSPavel Emelyanov #include <linux/pid_namespace.h> 82f83ce3e6SJake Edge #include <linux/ptrace.h> 830d094efeSRoland McGrath #include <linux/tracehook.h> 84ae2975bcSEric W. Biederman #include <linux/user_namespace.h> 851da177e4SLinus Torvalds 861da177e4SLinus Torvalds #include <asm/pgtable.h> 871da177e4SLinus Torvalds #include <asm/processor.h> 881da177e4SLinus Torvalds #include "internal.h" 891da177e4SLinus Torvalds 90df5f8314SEric W. Biederman static inline void task_name(struct seq_file *m, struct task_struct *p) 911da177e4SLinus Torvalds { 921da177e4SLinus Torvalds int i; 93df5f8314SEric W. Biederman char *buf, *end; 941da177e4SLinus Torvalds char *name; 951da177e4SLinus Torvalds char tcomm[sizeof(p->comm)]; 961da177e4SLinus Torvalds 971da177e4SLinus Torvalds get_task_comm(tcomm, p); 981da177e4SLinus Torvalds 999d6de12fSAlexey Dobriyan seq_puts(m, "Name:\t"); 100df5f8314SEric W. Biederman end = m->buf + m->size; 101df5f8314SEric W. Biederman buf = m->buf + m->count; 1021da177e4SLinus Torvalds name = tcomm; 1031da177e4SLinus Torvalds i = sizeof(tcomm); 104df5f8314SEric W. Biederman while (i && (buf < end)) { 1051da177e4SLinus Torvalds unsigned char c = *name; 1061da177e4SLinus Torvalds name++; 1071da177e4SLinus Torvalds i--; 1081da177e4SLinus Torvalds *buf = c; 1091da177e4SLinus Torvalds if (!c) 1101da177e4SLinus Torvalds break; 1111da177e4SLinus Torvalds if (c == '\\') { 112df5f8314SEric W. Biederman buf++; 113df5f8314SEric W. Biederman if (buf < end) 114df5f8314SEric W. Biederman *buf++ = c; 1151da177e4SLinus Torvalds continue; 1161da177e4SLinus Torvalds } 1171da177e4SLinus Torvalds if (c == '\n') { 118df5f8314SEric W. Biederman *buf++ = '\\'; 119df5f8314SEric W. Biederman if (buf < end) 120df5f8314SEric W. Biederman *buf++ = 'n'; 1211da177e4SLinus Torvalds continue; 1221da177e4SLinus Torvalds } 1231da177e4SLinus Torvalds buf++; 124df5f8314SEric W. Biederman } 125df5f8314SEric W. Biederman m->count = buf - m->buf; 1269d6de12fSAlexey Dobriyan seq_putc(m, '\n'); 1271da177e4SLinus Torvalds } 1281da177e4SLinus Torvalds 1291da177e4SLinus Torvalds /* 1301da177e4SLinus Torvalds * The task state array is a strange "bitmap" of 1311da177e4SLinus Torvalds * reasons to sleep. Thus "running" is zero, and 1321da177e4SLinus Torvalds * you can test for combinations of others with 1331da177e4SLinus Torvalds * simple bit tests. 1341da177e4SLinus Torvalds */ 135e130aa70SMike Frysinger static const char * const task_state_array[] = { 1361da177e4SLinus Torvalds "R (running)", /* 0 */ 1371da177e4SLinus Torvalds "S (sleeping)", /* 1 */ 1381da177e4SLinus Torvalds "D (disk sleep)", /* 2 */ 1391da177e4SLinus Torvalds "T (stopped)", /* 4 */ 140464763cfSPeter Zijlstra "t (tracing stop)", /* 8 */ 1411da177e4SLinus Torvalds "Z (zombie)", /* 16 */ 142464763cfSPeter Zijlstra "X (dead)", /* 32 */ 1431da177e4SLinus Torvalds }; 1441da177e4SLinus Torvalds 1451da177e4SLinus Torvalds static inline const char *get_task_state(struct task_struct *tsk) 1461da177e4SLinus Torvalds { 14774e37200SOleg Nesterov unsigned int state = (tsk->state | tsk->exit_state) & TASK_REPORT; 148e1781538SPeter Zijlstra 14974e37200SOleg Nesterov BUILD_BUG_ON(1 + ilog2(TASK_REPORT) != ARRAY_SIZE(task_state_array)-1); 1501da177e4SLinus Torvalds 15174e37200SOleg Nesterov return task_state_array[fls(state)]; 1521da177e4SLinus Torvalds } 1531da177e4SLinus Torvalds 154df5f8314SEric W. Biederman static inline void task_state(struct seq_file *m, struct pid_namespace *ns, 155df5f8314SEric W. Biederman struct pid *pid, struct task_struct *p) 1561da177e4SLinus Torvalds { 157e9f238c3SEric W. Biederman struct user_namespace *user_ns = seq_user_ns(m); 1581da177e4SLinus Torvalds struct group_info *group_info; 1591da177e4SLinus Torvalds int g; 160badf1662SDipankar Sarma struct fdtable *fdt = NULL; 161c69e8d9cSDavid Howells const struct cred *cred; 162b488893aSPavel Emelyanov pid_t ppid, tpid; 1631da177e4SLinus Torvalds 164b0fa9db6SOleg Nesterov rcu_read_lock(); 165b488893aSPavel Emelyanov ppid = pid_alive(p) ? 166b488893aSPavel Emelyanov task_tgid_nr_ns(rcu_dereference(p->real_parent), ns) : 0; 1670d094efeSRoland McGrath tpid = 0; 1680d094efeSRoland McGrath if (pid_alive(p)) { 16906d98473STejun Heo struct task_struct *tracer = ptrace_parent(p); 1700d094efeSRoland McGrath if (tracer) 1710d094efeSRoland McGrath tpid = task_pid_nr_ns(tracer, ns); 1720d094efeSRoland McGrath } 173de09a977SDavid Howells cred = get_task_cred(p); 174df5f8314SEric W. Biederman seq_printf(m, 1751da177e4SLinus Torvalds "State:\t%s\n" 1761da177e4SLinus Torvalds "Tgid:\t%d\n" 177e29cf08bSMel Gorman "Ngid:\t%d\n" 1781da177e4SLinus Torvalds "Pid:\t%d\n" 1791da177e4SLinus Torvalds "PPid:\t%d\n" 1801da177e4SLinus Torvalds "TracerPid:\t%d\n" 1811da177e4SLinus Torvalds "Uid:\t%d\t%d\t%d\t%d\n" 1821da177e4SLinus Torvalds "Gid:\t%d\t%d\t%d\t%d\n", 1831da177e4SLinus Torvalds get_task_state(p), 184b488893aSPavel Emelyanov task_tgid_nr_ns(p, ns), 185e29cf08bSMel Gorman task_numa_group_id(p), 186df5f8314SEric W. Biederman pid_nr_ns(pid, ns), 187b488893aSPavel Emelyanov ppid, tpid, 188dcb0f222SEric W. Biederman from_kuid_munged(user_ns, cred->uid), 189dcb0f222SEric W. Biederman from_kuid_munged(user_ns, cred->euid), 190dcb0f222SEric W. Biederman from_kuid_munged(user_ns, cred->suid), 191dcb0f222SEric W. Biederman from_kuid_munged(user_ns, cred->fsuid), 192dcb0f222SEric W. Biederman from_kgid_munged(user_ns, cred->gid), 193dcb0f222SEric W. Biederman from_kgid_munged(user_ns, cred->egid), 194dcb0f222SEric W. Biederman from_kgid_munged(user_ns, cred->sgid), 195dcb0f222SEric W. Biederman from_kgid_munged(user_ns, cred->fsgid)); 196b0fa9db6SOleg Nesterov 1971da177e4SLinus Torvalds task_lock(p); 198badf1662SDipankar Sarma if (p->files) 199badf1662SDipankar Sarma fdt = files_fdtable(p->files); 200df5f8314SEric W. Biederman seq_printf(m, 2011da177e4SLinus Torvalds "FDSize:\t%d\n" 2021da177e4SLinus Torvalds "Groups:\t", 203badf1662SDipankar Sarma fdt ? fdt->max_fds : 0); 2044fb3a538SDipankar Sarma rcu_read_unlock(); 2051da177e4SLinus Torvalds 206c69e8d9cSDavid Howells group_info = cred->group_info; 2071da177e4SLinus Torvalds task_unlock(p); 2081da177e4SLinus Torvalds 2098d238027SArtem Bityutskiy for (g = 0; g < group_info->ngroups; g++) 210ae2975bcSEric W. Biederman seq_printf(m, "%d ", 211ae2975bcSEric W. Biederman from_kgid_munged(user_ns, GROUP_AT(group_info, g))); 212c69e8d9cSDavid Howells put_cred(cred); 2131da177e4SLinus Torvalds 2149d6de12fSAlexey Dobriyan seq_putc(m, '\n'); 2151da177e4SLinus Torvalds } 2161da177e4SLinus Torvalds 217138d22b5SCyrill Gorcunov void render_sigset_t(struct seq_file *m, const char *header, 218df5f8314SEric W. Biederman sigset_t *set) 2191da177e4SLinus Torvalds { 220df5f8314SEric W. Biederman int i; 2211da177e4SLinus Torvalds 2229d6de12fSAlexey Dobriyan seq_puts(m, header); 2231da177e4SLinus Torvalds 2241da177e4SLinus Torvalds i = _NSIG; 2251da177e4SLinus Torvalds do { 2261da177e4SLinus Torvalds int x = 0; 2271da177e4SLinus Torvalds 2281da177e4SLinus Torvalds i -= 4; 2291da177e4SLinus Torvalds if (sigismember(set, i+1)) x |= 1; 2301da177e4SLinus Torvalds if (sigismember(set, i+2)) x |= 2; 2311da177e4SLinus Torvalds if (sigismember(set, i+3)) x |= 4; 2321da177e4SLinus Torvalds if (sigismember(set, i+4)) x |= 8; 233df5f8314SEric W. Biederman seq_printf(m, "%x", x); 2341da177e4SLinus Torvalds } while (i >= 4); 2351da177e4SLinus Torvalds 2369d6de12fSAlexey Dobriyan seq_putc(m, '\n'); 2371da177e4SLinus Torvalds } 2381da177e4SLinus Torvalds 2391da177e4SLinus Torvalds static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign, 2401da177e4SLinus Torvalds sigset_t *catch) 2411da177e4SLinus Torvalds { 2421da177e4SLinus Torvalds struct k_sigaction *k; 2431da177e4SLinus Torvalds int i; 2441da177e4SLinus Torvalds 2451da177e4SLinus Torvalds k = p->sighand->action; 2461da177e4SLinus Torvalds for (i = 1; i <= _NSIG; ++i, ++k) { 2471da177e4SLinus Torvalds if (k->sa.sa_handler == SIG_IGN) 2481da177e4SLinus Torvalds sigaddset(ign, i); 2491da177e4SLinus Torvalds else if (k->sa.sa_handler != SIG_DFL) 2501da177e4SLinus Torvalds sigaddset(catch, i); 2511da177e4SLinus Torvalds } 2521da177e4SLinus Torvalds } 2531da177e4SLinus Torvalds 254df5f8314SEric W. Biederman static inline void task_sig(struct seq_file *m, struct task_struct *p) 2551da177e4SLinus Torvalds { 2565e6b3f42SOleg Nesterov unsigned long flags; 2571da177e4SLinus Torvalds sigset_t pending, shpending, blocked, ignored, caught; 2581da177e4SLinus Torvalds int num_threads = 0; 2591da177e4SLinus Torvalds unsigned long qsize = 0; 2601da177e4SLinus Torvalds unsigned long qlim = 0; 2611da177e4SLinus Torvalds 2621da177e4SLinus Torvalds sigemptyset(&pending); 2631da177e4SLinus Torvalds sigemptyset(&shpending); 2641da177e4SLinus Torvalds sigemptyset(&blocked); 2651da177e4SLinus Torvalds sigemptyset(&ignored); 2661da177e4SLinus Torvalds sigemptyset(&caught); 2671da177e4SLinus Torvalds 2685e6b3f42SOleg Nesterov if (lock_task_sighand(p, &flags)) { 2691da177e4SLinus Torvalds pending = p->pending.signal; 2701da177e4SLinus Torvalds shpending = p->signal->shared_pending.signal; 2711da177e4SLinus Torvalds blocked = p->blocked; 2721da177e4SLinus Torvalds collect_sigign_sigcatch(p, &ignored, &caught); 2737e49827cSOleg Nesterov num_threads = get_nr_threads(p); 2747dc52157SPaul E. McKenney rcu_read_lock(); /* FIXME: is this correct? */ 275c69e8d9cSDavid Howells qsize = atomic_read(&__task_cred(p)->user->sigpending); 2767dc52157SPaul E. McKenney rcu_read_unlock(); 277d554ed89SJiri Slaby qlim = task_rlimit(p, RLIMIT_SIGPENDING); 2785e6b3f42SOleg Nesterov unlock_task_sighand(p, &flags); 2791da177e4SLinus Torvalds } 2801da177e4SLinus Torvalds 281df5f8314SEric W. Biederman seq_printf(m, "Threads:\t%d\n", num_threads); 282df5f8314SEric W. Biederman seq_printf(m, "SigQ:\t%lu/%lu\n", qsize, qlim); 2831da177e4SLinus Torvalds 2841da177e4SLinus Torvalds /* render them all */ 285df5f8314SEric W. Biederman render_sigset_t(m, "SigPnd:\t", &pending); 286df5f8314SEric W. Biederman render_sigset_t(m, "ShdPnd:\t", &shpending); 287df5f8314SEric W. Biederman render_sigset_t(m, "SigBlk:\t", &blocked); 288df5f8314SEric W. Biederman render_sigset_t(m, "SigIgn:\t", &ignored); 289df5f8314SEric W. Biederman render_sigset_t(m, "SigCgt:\t", &caught); 2901da177e4SLinus Torvalds } 2911da177e4SLinus Torvalds 292df5f8314SEric W. Biederman static void render_cap_t(struct seq_file *m, const char *header, 293df5f8314SEric W. Biederman kernel_cap_t *a) 294e338d263SAndrew Morgan { 295e338d263SAndrew Morgan unsigned __capi; 296e338d263SAndrew Morgan 2979d6de12fSAlexey Dobriyan seq_puts(m, header); 298e338d263SAndrew Morgan CAP_FOR_EACH_U32(__capi) { 299df5f8314SEric W. Biederman seq_printf(m, "%08x", 300ca05a99aSAndrew G. Morgan a->cap[(_KERNEL_CAPABILITY_U32S-1) - __capi]); 301e338d263SAndrew Morgan } 3029d6de12fSAlexey Dobriyan seq_putc(m, '\n'); 303e338d263SAndrew Morgan } 304e338d263SAndrew Morgan 3057b9a7ec5SAndrew Vagin /* Remove non-existent capabilities */ 3067b9a7ec5SAndrew Vagin #define NORM_CAPS(v) (v.cap[CAP_TO_INDEX(CAP_LAST_CAP)] &= \ 3077b9a7ec5SAndrew Vagin CAP_TO_MASK(CAP_LAST_CAP + 1) - 1) 3087b9a7ec5SAndrew Vagin 309df5f8314SEric W. Biederman static inline void task_cap(struct seq_file *m, struct task_struct *p) 3101da177e4SLinus Torvalds { 311c69e8d9cSDavid Howells const struct cred *cred; 312c69e8d9cSDavid Howells kernel_cap_t cap_inheritable, cap_permitted, cap_effective, cap_bset; 313b6dff3ecSDavid Howells 314c69e8d9cSDavid Howells rcu_read_lock(); 315c69e8d9cSDavid Howells cred = __task_cred(p); 316c69e8d9cSDavid Howells cap_inheritable = cred->cap_inheritable; 317c69e8d9cSDavid Howells cap_permitted = cred->cap_permitted; 318c69e8d9cSDavid Howells cap_effective = cred->cap_effective; 319c69e8d9cSDavid Howells cap_bset = cred->cap_bset; 320c69e8d9cSDavid Howells rcu_read_unlock(); 321c69e8d9cSDavid Howells 3227b9a7ec5SAndrew Vagin NORM_CAPS(cap_inheritable); 3237b9a7ec5SAndrew Vagin NORM_CAPS(cap_permitted); 3247b9a7ec5SAndrew Vagin NORM_CAPS(cap_effective); 3257b9a7ec5SAndrew Vagin NORM_CAPS(cap_bset); 3267b9a7ec5SAndrew Vagin 327c69e8d9cSDavid Howells render_cap_t(m, "CapInh:\t", &cap_inheritable); 328c69e8d9cSDavid Howells render_cap_t(m, "CapPrm:\t", &cap_permitted); 329c69e8d9cSDavid Howells render_cap_t(m, "CapEff:\t", &cap_effective); 330c69e8d9cSDavid Howells render_cap_t(m, "CapBnd:\t", &cap_bset); 3311da177e4SLinus Torvalds } 3321da177e4SLinus Torvalds 3332f4b3bf6SKees Cook static inline void task_seccomp(struct seq_file *m, struct task_struct *p) 3342f4b3bf6SKees Cook { 3352f4b3bf6SKees Cook #ifdef CONFIG_SECCOMP 3362f4b3bf6SKees Cook seq_printf(m, "Seccomp:\t%d\n", p->seccomp.mode); 3372f4b3bf6SKees Cook #endif 3382f4b3bf6SKees Cook } 3392f4b3bf6SKees Cook 340df5f8314SEric W. Biederman static inline void task_context_switch_counts(struct seq_file *m, 341df5f8314SEric W. Biederman struct task_struct *p) 342b663a79cSMaxim Uvarov { 343df5f8314SEric W. Biederman seq_printf(m, "voluntary_ctxt_switches:\t%lu\n" 344b663a79cSMaxim Uvarov "nonvoluntary_ctxt_switches:\t%lu\n", 345b663a79cSMaxim Uvarov p->nvcsw, 346b663a79cSMaxim Uvarov p->nivcsw); 347b663a79cSMaxim Uvarov } 348b663a79cSMaxim Uvarov 349d01d4827SHeiko Carstens static void task_cpus_allowed(struct seq_file *m, struct task_struct *task) 350d01d4827SHeiko Carstens { 3519d6de12fSAlexey Dobriyan seq_puts(m, "Cpus_allowed:\t"); 352d01d4827SHeiko Carstens seq_cpumask(m, &task->cpus_allowed); 3539d6de12fSAlexey Dobriyan seq_putc(m, '\n'); 3549d6de12fSAlexey Dobriyan seq_puts(m, "Cpus_allowed_list:\t"); 355d01d4827SHeiko Carstens seq_cpumask_list(m, &task->cpus_allowed); 3569d6de12fSAlexey Dobriyan seq_putc(m, '\n'); 357d01d4827SHeiko Carstens } 358d01d4827SHeiko Carstens 359df5f8314SEric W. Biederman int proc_pid_status(struct seq_file *m, struct pid_namespace *ns, 360df5f8314SEric W. Biederman struct pid *pid, struct task_struct *task) 3611da177e4SLinus Torvalds { 3621da177e4SLinus Torvalds struct mm_struct *mm = get_task_mm(task); 3631da177e4SLinus Torvalds 364df5f8314SEric W. Biederman task_name(m, task); 365df5f8314SEric W. Biederman task_state(m, ns, pid, task); 3661da177e4SLinus Torvalds 3671da177e4SLinus Torvalds if (mm) { 368df5f8314SEric W. Biederman task_mem(m, mm); 3691da177e4SLinus Torvalds mmput(mm); 3701da177e4SLinus Torvalds } 371df5f8314SEric W. Biederman task_sig(m, task); 372df5f8314SEric W. Biederman task_cap(m, task); 3732f4b3bf6SKees Cook task_seccomp(m, task); 374d01d4827SHeiko Carstens task_cpus_allowed(m, task); 375df5f8314SEric W. Biederman cpuset_task_status_allowed(m, task); 376df5f8314SEric W. Biederman task_context_switch_counts(m, task); 377df5f8314SEric W. Biederman return 0; 3781da177e4SLinus Torvalds } 3791da177e4SLinus Torvalds 380ee992744SEric W. Biederman static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, 381ee992744SEric W. Biederman struct pid *pid, struct task_struct *task, int whole) 3821da177e4SLinus Torvalds { 3831da177e4SLinus Torvalds unsigned long vsize, eip, esp, wchan = ~0UL; 384715be1fcSJan Engelhardt int priority, nice; 3851da177e4SLinus Torvalds int tty_pgrp = -1, tty_nr = 0; 3861da177e4SLinus Torvalds sigset_t sigign, sigcatch; 3871da177e4SLinus Torvalds char state; 388a593d6edSOleg Nesterov pid_t ppid = 0, pgid = -1, sid = -1; 3891da177e4SLinus Torvalds int num_threads = 0; 390f83ce3e6SJake Edge int permitted; 3911da177e4SLinus Torvalds struct mm_struct *mm; 3921da177e4SLinus Torvalds unsigned long long start_time; 3931da177e4SLinus Torvalds unsigned long cmin_flt = 0, cmaj_flt = 0; 3941da177e4SLinus Torvalds unsigned long min_flt = 0, maj_flt = 0; 395efe567fcSChristian Borntraeger cputime_t cutime, cstime, utime, stime; 3969ac52315SLaurent Vivier cputime_t cgtime, gtime; 3971da177e4SLinus Torvalds unsigned long rsslim = 0; 3981da177e4SLinus Torvalds char tcomm[sizeof(task->comm)]; 399a593d6edSOleg Nesterov unsigned long flags; 4001da177e4SLinus Torvalds 4011da177e4SLinus Torvalds state = *get_task_state(task); 4021da177e4SLinus Torvalds vsize = eip = esp = 0; 40369f594a3SEric Paris permitted = ptrace_may_access(task, PTRACE_MODE_READ | PTRACE_MODE_NOAUDIT); 4041da177e4SLinus Torvalds mm = get_task_mm(task); 4051da177e4SLinus Torvalds if (mm) { 4061da177e4SLinus Torvalds vsize = task_vsize(mm); 407f83ce3e6SJake Edge if (permitted) { 4081da177e4SLinus Torvalds eip = KSTK_EIP(task); 4091da177e4SLinus Torvalds esp = KSTK_ESP(task); 4101da177e4SLinus Torvalds } 411f83ce3e6SJake Edge } 4121da177e4SLinus Torvalds 4131da177e4SLinus Torvalds get_task_comm(tcomm, task); 4141da177e4SLinus Torvalds 4151da177e4SLinus Torvalds sigemptyset(&sigign); 4161da177e4SLinus Torvalds sigemptyset(&sigcatch); 41764861634SMartin Schwidefsky cutime = cstime = utime = stime = 0; 41864861634SMartin Schwidefsky cgtime = gtime = 0; 4193cfd0885SAlan Cox 420a593d6edSOleg Nesterov if (lock_task_sighand(task, &flags)) { 421a593d6edSOleg Nesterov struct signal_struct *sig = task->signal; 422a593d6edSOleg Nesterov 42391593504SOleg Nesterov if (sig->tty) { 4245d0fdf1eSAlan Cox struct pid *pgrp = tty_get_pgrp(sig->tty); 4255d0fdf1eSAlan Cox tty_pgrp = pid_nr_ns(pgrp, ns); 4265d0fdf1eSAlan Cox put_pid(pgrp); 42791593504SOleg Nesterov tty_nr = new_encode_dev(tty_devnum(sig->tty)); 428a593d6edSOleg Nesterov } 429a593d6edSOleg Nesterov 4307e49827cSOleg Nesterov num_threads = get_nr_threads(task); 4311da177e4SLinus Torvalds collect_sigign_sigcatch(task, &sigign, &sigcatch); 4321da177e4SLinus Torvalds 433a593d6edSOleg Nesterov cmin_flt = sig->cmin_flt; 434a593d6edSOleg Nesterov cmaj_flt = sig->cmaj_flt; 435a593d6edSOleg Nesterov cutime = sig->cutime; 436a593d6edSOleg Nesterov cstime = sig->cstime; 4379ac52315SLaurent Vivier cgtime = sig->cgtime; 438d554ed89SJiri Slaby rsslim = ACCESS_ONCE(sig->rlim[RLIMIT_RSS].rlim_cur); 439a593d6edSOleg Nesterov 4401da177e4SLinus Torvalds /* add up live thread stats at the group level */ 4411da177e4SLinus Torvalds if (whole) { 442a593d6edSOleg Nesterov struct task_struct *t = task; 4431da177e4SLinus Torvalds do { 4441da177e4SLinus Torvalds min_flt += t->min_flt; 4451da177e4SLinus Torvalds maj_flt += t->maj_flt; 4466fac4829SFrederic Weisbecker gtime += task_gtime(t); 4471da177e4SLinus Torvalds t = next_thread(t); 4481da177e4SLinus Torvalds } while (t != task); 449a593d6edSOleg Nesterov 450a593d6edSOleg Nesterov min_flt += sig->min_flt; 451a593d6edSOleg Nesterov maj_flt += sig->maj_flt; 452e80d0a1aSFrederic Weisbecker thread_group_cputime_adjusted(task, &utime, &stime); 45364861634SMartin Schwidefsky gtime += sig->gtime; 4541da177e4SLinus Torvalds } 4551da177e4SLinus Torvalds 456b488893aSPavel Emelyanov sid = task_session_nr_ns(task, ns); 457a98fdcefSOleg Nesterov ppid = task_tgid_nr_ns(task->real_parent, ns); 458b488893aSPavel Emelyanov pgid = task_pgrp_nr_ns(task, ns); 459a593d6edSOleg Nesterov 460a593d6edSOleg Nesterov unlock_task_sighand(task, &flags); 4611da177e4SLinus Torvalds } 4621da177e4SLinus Torvalds 463f83ce3e6SJake Edge if (permitted && (!whole || num_threads < 2)) 4641da177e4SLinus Torvalds wchan = get_wchan(task); 4651da177e4SLinus Torvalds if (!whole) { 4661da177e4SLinus Torvalds min_flt = task->min_flt; 4671da177e4SLinus Torvalds maj_flt = task->maj_flt; 468e80d0a1aSFrederic Weisbecker task_cputime_adjusted(task, &utime, &stime); 4696fac4829SFrederic Weisbecker gtime = task_gtime(task); 4701da177e4SLinus Torvalds } 4711da177e4SLinus Torvalds 4721da177e4SLinus Torvalds /* scale priority and nice values from timeslices to -20..20 */ 4731da177e4SLinus Torvalds /* to make it look like a "normal" Unix priority/nice value */ 4741da177e4SLinus Torvalds priority = task_prio(task); 4751da177e4SLinus Torvalds nice = task_nice(task); 4761da177e4SLinus Torvalds 4771da177e4SLinus Torvalds /* Temporary variable needed for gcc-2.96 */ 4781da177e4SLinus Torvalds /* convert timespec -> nsec*/ 479924b42d5STomas Janousek start_time = 480924b42d5STomas Janousek (unsigned long long)task->real_start_time.tv_sec * NSEC_PER_SEC 481924b42d5STomas Janousek + task->real_start_time.tv_nsec; 4821da177e4SLinus Torvalds /* convert nsec -> ticks */ 4831da177e4SLinus Torvalds start_time = nsec_to_clock_t(start_time); 4841da177e4SLinus Torvalds 485bda7bad6SKAMEZAWA Hiroyuki seq_printf(m, "%d (%s) %c", pid_nr_ns(pid, ns), tcomm, state); 486bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ll(m, ' ', ppid); 487bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ll(m, ' ', pgid); 488bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ll(m, ' ', sid); 489bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ll(m, ' ', tty_nr); 490bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ll(m, ' ', tty_pgrp); 491bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', task->flags); 492bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', min_flt); 493bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', cmin_flt); 494bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', maj_flt); 495bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', cmaj_flt); 496bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', cputime_to_clock_t(utime)); 497bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', cputime_to_clock_t(stime)); 498bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cutime)); 499bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cstime)); 500bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ll(m, ' ', priority); 501bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ll(m, ' ', nice); 502bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ll(m, ' ', num_threads); 503bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', 0); 504bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', start_time); 505bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', vsize); 506715be1fcSJan Engelhardt seq_put_decimal_ull(m, ' ', mm ? get_mm_rss(mm) : 0); 507bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', rsslim); 508bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->start_code : 1) : 0); 509bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->end_code : 1) : 0); 510bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', (permitted && mm) ? mm->start_stack : 0); 511bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', esp); 512bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', eip); 5131da177e4SLinus Torvalds /* The signal information here is obsolete. 5141da177e4SLinus Torvalds * It must be decimal for Linux 2.0 compatibility. 5151da177e4SLinus Torvalds * Use /proc/#/status for real-time signals. 5161da177e4SLinus Torvalds */ 517bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', task->pending.signal.sig[0] & 0x7fffffffUL); 518bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', task->blocked.sig[0] & 0x7fffffffUL); 519bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', sigign.sig[0] & 0x7fffffffUL); 520bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', sigcatch.sig[0] & 0x7fffffffUL); 521bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', wchan); 522bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', 0); 523bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', 0); 524bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ll(m, ' ', task->exit_signal); 525bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ll(m, ' ', task_cpu(task)); 526bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', task->rt_priority); 527bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', task->policy); 528bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', delayacct_blkio_ticks(task)); 529bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', cputime_to_clock_t(gtime)); 530bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cgtime)); 5315b172087SCyrill Gorcunov 5325b172087SCyrill Gorcunov if (mm && permitted) { 5335b172087SCyrill Gorcunov seq_put_decimal_ull(m, ' ', mm->start_data); 5345b172087SCyrill Gorcunov seq_put_decimal_ull(m, ' ', mm->end_data); 5355b172087SCyrill Gorcunov seq_put_decimal_ull(m, ' ', mm->start_brk); 5365b172087SCyrill Gorcunov seq_put_decimal_ull(m, ' ', mm->arg_start); 5375b172087SCyrill Gorcunov seq_put_decimal_ull(m, ' ', mm->arg_end); 5385b172087SCyrill Gorcunov seq_put_decimal_ull(m, ' ', mm->env_start); 5395b172087SCyrill Gorcunov seq_put_decimal_ull(m, ' ', mm->env_end); 5405b172087SCyrill Gorcunov } else 5415b172087SCyrill Gorcunov seq_printf(m, " 0 0 0 0 0 0 0"); 5425b172087SCyrill Gorcunov 5435b172087SCyrill Gorcunov if (permitted) 5445b172087SCyrill Gorcunov seq_put_decimal_ll(m, ' ', task->exit_code); 5455b172087SCyrill Gorcunov else 5465b172087SCyrill Gorcunov seq_put_decimal_ll(m, ' ', 0); 5475b172087SCyrill Gorcunov 548bda7bad6SKAMEZAWA Hiroyuki seq_putc(m, '\n'); 5491da177e4SLinus Torvalds if (mm) 5501da177e4SLinus Torvalds mmput(mm); 551ee992744SEric W. Biederman return 0; 5521da177e4SLinus Torvalds } 5531da177e4SLinus Torvalds 554ee992744SEric W. Biederman int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns, 555ee992744SEric W. Biederman struct pid *pid, struct task_struct *task) 5561da177e4SLinus Torvalds { 557ee992744SEric W. Biederman return do_task_stat(m, ns, pid, task, 0); 5581da177e4SLinus Torvalds } 5591da177e4SLinus Torvalds 560ee992744SEric W. Biederman int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns, 561ee992744SEric W. Biederman struct pid *pid, struct task_struct *task) 5621da177e4SLinus Torvalds { 563ee992744SEric W. Biederman return do_task_stat(m, ns, pid, task, 1); 5641da177e4SLinus Torvalds } 5651da177e4SLinus Torvalds 566a56d3fc7SEric W. Biederman int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns, 567a56d3fc7SEric W. Biederman struct pid *pid, struct task_struct *task) 5681da177e4SLinus Torvalds { 569a2ade7b6SAlexey Dobriyan unsigned long size = 0, resident = 0, shared = 0, text = 0, data = 0; 5701da177e4SLinus Torvalds struct mm_struct *mm = get_task_mm(task); 5711da177e4SLinus Torvalds 5721da177e4SLinus Torvalds if (mm) { 5731da177e4SLinus Torvalds size = task_statm(mm, &shared, &text, &data, &resident); 5741da177e4SLinus Torvalds mmput(mm); 5751da177e4SLinus Torvalds } 576bda7bad6SKAMEZAWA Hiroyuki /* 577bda7bad6SKAMEZAWA Hiroyuki * For quick read, open code by putting numbers directly 578bda7bad6SKAMEZAWA Hiroyuki * expected format is 579bda7bad6SKAMEZAWA Hiroyuki * seq_printf(m, "%lu %lu %lu %lu 0 %lu 0\n", 580bda7bad6SKAMEZAWA Hiroyuki * size, resident, shared, text, data); 581bda7bad6SKAMEZAWA Hiroyuki */ 582bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, 0, size); 583bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', resident); 584bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', shared); 585bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', text); 586bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', 0); 5873748b2f1SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', data); 588bda7bad6SKAMEZAWA Hiroyuki seq_put_decimal_ull(m, ' ', 0); 589bda7bad6SKAMEZAWA Hiroyuki seq_putc(m, '\n'); 590a56d3fc7SEric W. Biederman 591a56d3fc7SEric W. Biederman return 0; 5921da177e4SLinus Torvalds } 59381841161SCyrill Gorcunov 59481841161SCyrill Gorcunov #ifdef CONFIG_CHECKPOINT_RESTORE 59581841161SCyrill Gorcunov static struct pid * 59681841161SCyrill Gorcunov get_children_pid(struct inode *inode, struct pid *pid_prev, loff_t pos) 59781841161SCyrill Gorcunov { 59881841161SCyrill Gorcunov struct task_struct *start, *task; 59981841161SCyrill Gorcunov struct pid *pid = NULL; 60081841161SCyrill Gorcunov 60181841161SCyrill Gorcunov read_lock(&tasklist_lock); 60281841161SCyrill Gorcunov 60381841161SCyrill Gorcunov start = pid_task(proc_pid(inode), PIDTYPE_PID); 60481841161SCyrill Gorcunov if (!start) 60581841161SCyrill Gorcunov goto out; 60681841161SCyrill Gorcunov 60781841161SCyrill Gorcunov /* 60881841161SCyrill Gorcunov * Lets try to continue searching first, this gives 60981841161SCyrill Gorcunov * us significant speedup on children-rich processes. 61081841161SCyrill Gorcunov */ 61181841161SCyrill Gorcunov if (pid_prev) { 61281841161SCyrill Gorcunov task = pid_task(pid_prev, PIDTYPE_PID); 61381841161SCyrill Gorcunov if (task && task->real_parent == start && 61481841161SCyrill Gorcunov !(list_empty(&task->sibling))) { 61581841161SCyrill Gorcunov if (list_is_last(&task->sibling, &start->children)) 61681841161SCyrill Gorcunov goto out; 61781841161SCyrill Gorcunov task = list_first_entry(&task->sibling, 61881841161SCyrill Gorcunov struct task_struct, sibling); 61981841161SCyrill Gorcunov pid = get_pid(task_pid(task)); 62081841161SCyrill Gorcunov goto out; 62181841161SCyrill Gorcunov } 62281841161SCyrill Gorcunov } 62381841161SCyrill Gorcunov 62481841161SCyrill Gorcunov /* 62581841161SCyrill Gorcunov * Slow search case. 62681841161SCyrill Gorcunov * 62781841161SCyrill Gorcunov * We might miss some children here if children 62881841161SCyrill Gorcunov * are exited while we were not holding the lock, 62981841161SCyrill Gorcunov * but it was never promised to be accurate that 63081841161SCyrill Gorcunov * much. 63181841161SCyrill Gorcunov * 63281841161SCyrill Gorcunov * "Just suppose that the parent sleeps, but N children 63381841161SCyrill Gorcunov * exit after we printed their tids. Now the slow paths 63481841161SCyrill Gorcunov * skips N extra children, we miss N tasks." (c) 63581841161SCyrill Gorcunov * 63681841161SCyrill Gorcunov * So one need to stop or freeze the leader and all 63781841161SCyrill Gorcunov * its children to get a precise result. 63881841161SCyrill Gorcunov */ 63981841161SCyrill Gorcunov list_for_each_entry(task, &start->children, sibling) { 64081841161SCyrill Gorcunov if (pos-- == 0) { 64181841161SCyrill Gorcunov pid = get_pid(task_pid(task)); 64281841161SCyrill Gorcunov break; 64381841161SCyrill Gorcunov } 64481841161SCyrill Gorcunov } 64581841161SCyrill Gorcunov 64681841161SCyrill Gorcunov out: 64781841161SCyrill Gorcunov read_unlock(&tasklist_lock); 64881841161SCyrill Gorcunov return pid; 64981841161SCyrill Gorcunov } 65081841161SCyrill Gorcunov 65181841161SCyrill Gorcunov static int children_seq_show(struct seq_file *seq, void *v) 65281841161SCyrill Gorcunov { 65381841161SCyrill Gorcunov struct inode *inode = seq->private; 65481841161SCyrill Gorcunov pid_t pid; 65581841161SCyrill Gorcunov 65681841161SCyrill Gorcunov pid = pid_nr_ns(v, inode->i_sb->s_fs_info); 65781841161SCyrill Gorcunov return seq_printf(seq, "%d ", pid); 65881841161SCyrill Gorcunov } 65981841161SCyrill Gorcunov 66081841161SCyrill Gorcunov static void *children_seq_start(struct seq_file *seq, loff_t *pos) 66181841161SCyrill Gorcunov { 66281841161SCyrill Gorcunov return get_children_pid(seq->private, NULL, *pos); 66381841161SCyrill Gorcunov } 66481841161SCyrill Gorcunov 66581841161SCyrill Gorcunov static void *children_seq_next(struct seq_file *seq, void *v, loff_t *pos) 66681841161SCyrill Gorcunov { 66781841161SCyrill Gorcunov struct pid *pid; 66881841161SCyrill Gorcunov 66981841161SCyrill Gorcunov pid = get_children_pid(seq->private, v, *pos + 1); 67081841161SCyrill Gorcunov put_pid(v); 67181841161SCyrill Gorcunov 67281841161SCyrill Gorcunov ++*pos; 67381841161SCyrill Gorcunov return pid; 67481841161SCyrill Gorcunov } 67581841161SCyrill Gorcunov 67681841161SCyrill Gorcunov static void children_seq_stop(struct seq_file *seq, void *v) 67781841161SCyrill Gorcunov { 67881841161SCyrill Gorcunov put_pid(v); 67981841161SCyrill Gorcunov } 68081841161SCyrill Gorcunov 68181841161SCyrill Gorcunov static const struct seq_operations children_seq_ops = { 68281841161SCyrill Gorcunov .start = children_seq_start, 68381841161SCyrill Gorcunov .next = children_seq_next, 68481841161SCyrill Gorcunov .stop = children_seq_stop, 68581841161SCyrill Gorcunov .show = children_seq_show, 68681841161SCyrill Gorcunov }; 68781841161SCyrill Gorcunov 68881841161SCyrill Gorcunov static int children_seq_open(struct inode *inode, struct file *file) 68981841161SCyrill Gorcunov { 69081841161SCyrill Gorcunov struct seq_file *m; 69181841161SCyrill Gorcunov int ret; 69281841161SCyrill Gorcunov 69381841161SCyrill Gorcunov ret = seq_open(file, &children_seq_ops); 69481841161SCyrill Gorcunov if (ret) 69581841161SCyrill Gorcunov return ret; 69681841161SCyrill Gorcunov 69781841161SCyrill Gorcunov m = file->private_data; 69881841161SCyrill Gorcunov m->private = inode; 69981841161SCyrill Gorcunov 70081841161SCyrill Gorcunov return ret; 70181841161SCyrill Gorcunov } 70281841161SCyrill Gorcunov 70381841161SCyrill Gorcunov int children_seq_release(struct inode *inode, struct file *file) 70481841161SCyrill Gorcunov { 70581841161SCyrill Gorcunov seq_release(inode, file); 70681841161SCyrill Gorcunov return 0; 70781841161SCyrill Gorcunov } 70881841161SCyrill Gorcunov 70981841161SCyrill Gorcunov const struct file_operations proc_tid_children_operations = { 71081841161SCyrill Gorcunov .open = children_seq_open, 71181841161SCyrill Gorcunov .read = seq_read, 71281841161SCyrill Gorcunov .llseek = seq_lseek, 71381841161SCyrill Gorcunov .release = children_seq_release, 71481841161SCyrill Gorcunov }; 71581841161SCyrill Gorcunov #endif /* CONFIG_CHECKPOINT_RESTORE */ 716