Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/fs/proc/array.c |
| 3 | * |
| 4 | * Copyright (C) 1992 by Linus Torvalds |
| 5 | * based on ideas by Darren Senn |
| 6 | * |
| 7 | * Fixes: |
| 8 | * Michael. K. Johnson: stat,statm extensions. |
| 9 | * <johnsonm@stolaf.edu> |
| 10 | * |
| 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> |
| 16 | * |
| 17 | * Danny ter Haar : added cpuinfo |
| 18 | * <dth@cistron.nl> |
| 19 | * |
| 20 | * Alessandro Rubini : profile extension. |
| 21 | * <rubini@ipvvis.unipv.it> |
| 22 | * |
| 23 | * Jeff Tranter : added BogoMips field to cpuinfo |
| 24 | * <Jeff_Tranter@Mitel.COM> |
| 25 | * |
| 26 | * Bruno Haible : remove 4K limit for the maps file |
| 27 | * <haible@ma2s2.mathematik.uni-karlsruhe.de> |
| 28 | * |
| 29 | * Yves Arrouye : remove removal of trailing spaces in get_array. |
| 30 | * <Yves.Arrouye@marin.fdn.fr> |
| 31 | * |
| 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> |
| 38 | * |
| 39 | * aeb@cwi.nl : /proc/partitions |
| 40 | * |
| 41 | * |
| 42 | * Alan Cox : security fixes. |
Alan Cox | 526719b | 2008-10-27 15:19:48 +0000 | [diff] [blame] | 43 | * <alan@lxorguk.ukuu.org.uk> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | * |
| 45 | * Al Viro : safe handling of mm_struct |
| 46 | * |
| 47 | * Gerhard Wichert : added BIGMEM support |
| 48 | * Siemens AG <Gerhard.Wichert@pdb.siemens.de> |
| 49 | * |
| 50 | * Al Viro & Jeff Garzik : moved most of the thing into base.c and |
| 51 | * : proc_misc.c. The rest may eventually go into |
| 52 | * : base.c too. |
| 53 | */ |
| 54 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #include <linux/types.h> |
| 56 | #include <linux/errno.h> |
| 57 | #include <linux/time.h> |
| 58 | #include <linux/kernel.h> |
| 59 | #include <linux/kernel_stat.h> |
| 60 | #include <linux/tty.h> |
| 61 | #include <linux/string.h> |
| 62 | #include <linux/mman.h> |
| 63 | #include <linux/proc_fs.h> |
| 64 | #include <linux/ioport.h> |
Ingo Molnar | 8ea0260 | 2007-07-16 09:46:31 +0200 | [diff] [blame] | 65 | #include <linux/uaccess.h> |
| 66 | #include <linux/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | #include <linux/mm.h> |
| 68 | #include <linux/hugetlb.h> |
| 69 | #include <linux/pagemap.h> |
| 70 | #include <linux/swap.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | #include <linux/smp.h> |
| 72 | #include <linux/signal.h> |
| 73 | #include <linux/highmem.h> |
| 74 | #include <linux/file.h> |
Al Viro | 9f3acc3 | 2008-04-24 07:44:08 -0400 | [diff] [blame] | 75 | #include <linux/fdtable.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | #include <linux/times.h> |
| 77 | #include <linux/cpuset.h> |
Dipankar Sarma | 4fb3a53 | 2005-09-16 19:28:13 -0700 | [diff] [blame] | 78 | #include <linux/rcupdate.h> |
Shailabh Nagar | 2589045 | 2006-07-14 00:24:43 -0700 | [diff] [blame] | 79 | #include <linux/delayacct.h> |
Eric W. Biederman | ee99274 | 2008-02-08 04:18:31 -0800 | [diff] [blame] | 80 | #include <linux/seq_file.h> |
Pavel Emelyanov | b488893 | 2007-10-18 23:40:14 -0700 | [diff] [blame] | 81 | #include <linux/pid_namespace.h> |
Jake Edge | f83ce3e | 2009-05-04 12:51:14 -0600 | [diff] [blame] | 82 | #include <linux/ptrace.h> |
Roland McGrath | 0d094ef | 2008-07-25 19:45:49 -0700 | [diff] [blame] | 83 | #include <linux/tracehook.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | #include <asm/pgtable.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | #include <asm/processor.h> |
| 87 | #include "internal.h" |
| 88 | |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 89 | static inline void task_name(struct seq_file *m, struct task_struct *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | { |
| 91 | int i; |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 92 | char *buf, *end; |
Ingo Molnar | 8ea0260 | 2007-07-16 09:46:31 +0200 | [diff] [blame] | 93 | char *name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | char tcomm[sizeof(p->comm)]; |
| 95 | |
| 96 | get_task_comm(tcomm, p); |
| 97 | |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 98 | seq_printf(m, "Name:\t"); |
| 99 | end = m->buf + m->size; |
| 100 | buf = m->buf + m->count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | name = tcomm; |
| 102 | i = sizeof(tcomm); |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 103 | while (i && (buf < end)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | unsigned char c = *name; |
| 105 | name++; |
| 106 | i--; |
| 107 | *buf = c; |
| 108 | if (!c) |
| 109 | break; |
| 110 | if (c == '\\') { |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 111 | buf++; |
| 112 | if (buf < end) |
| 113 | *buf++ = c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | continue; |
| 115 | } |
| 116 | if (c == '\n') { |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 117 | *buf++ = '\\'; |
| 118 | if (buf < end) |
| 119 | *buf++ = 'n'; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | continue; |
| 121 | } |
| 122 | buf++; |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 123 | } |
| 124 | m->count = buf - m->buf; |
| 125 | seq_printf(m, "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | } |
| 127 | |
| 128 | /* |
| 129 | * The task state array is a strange "bitmap" of |
| 130 | * reasons to sleep. Thus "running" is zero, and |
| 131 | * you can test for combinations of others with |
| 132 | * simple bit tests. |
| 133 | */ |
| 134 | static const char *task_state_array[] = { |
Peter Zijlstra | e178153 | 2009-12-17 13:16:30 +0100 | [diff] [blame] | 135 | "R (running)", /* 0 */ |
| 136 | "S (sleeping)", /* 1 */ |
| 137 | "D (disk sleep)", /* 2 */ |
| 138 | "T (stopped)", /* 4 */ |
| 139 | "t (tracing stop)", /* 8 */ |
| 140 | "Z (zombie)", /* 16 */ |
| 141 | "X (dead)", /* 32 */ |
| 142 | "x (dead)", /* 64 */ |
Peter Zijlstra | 464763c | 2009-12-17 13:16:29 +0100 | [diff] [blame] | 143 | "K (wakekill)", /* 128 */ |
| 144 | "W (waking)", /* 256 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | }; |
| 146 | |
Ingo Molnar | 8ea0260 | 2007-07-16 09:46:31 +0200 | [diff] [blame] | 147 | static inline const char *get_task_state(struct task_struct *tsk) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | { |
Matthew Wilcox | 1587e2b | 2007-12-06 11:03:36 -0500 | [diff] [blame] | 149 | unsigned int state = (tsk->state & TASK_REPORT) | tsk->exit_state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | const char **p = &task_state_array[0]; |
| 151 | |
Peter Zijlstra | e178153 | 2009-12-17 13:16:30 +0100 | [diff] [blame] | 152 | BUILD_BUG_ON(1 + ilog2(TASK_STATE_MAX) != ARRAY_SIZE(task_state_array)); |
| 153 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | while (state) { |
| 155 | p++; |
| 156 | state >>= 1; |
| 157 | } |
| 158 | return *p; |
| 159 | } |
| 160 | |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 161 | static inline void task_state(struct seq_file *m, struct pid_namespace *ns, |
| 162 | struct pid *pid, struct task_struct *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | { |
| 164 | struct group_info *group_info; |
| 165 | int g; |
Dipankar Sarma | badf166 | 2005-09-09 13:04:10 -0700 | [diff] [blame] | 166 | struct fdtable *fdt = NULL; |
David Howells | c69e8d9 | 2008-11-14 10:39:19 +1100 | [diff] [blame] | 167 | const struct cred *cred; |
Pavel Emelyanov | b488893 | 2007-10-18 23:40:14 -0700 | [diff] [blame] | 168 | pid_t ppid, tpid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | |
Oleg Nesterov | b0fa9db | 2006-10-02 02:18:54 -0700 | [diff] [blame] | 170 | rcu_read_lock(); |
Pavel Emelyanov | b488893 | 2007-10-18 23:40:14 -0700 | [diff] [blame] | 171 | ppid = pid_alive(p) ? |
| 172 | task_tgid_nr_ns(rcu_dereference(p->real_parent), ns) : 0; |
Roland McGrath | 0d094ef | 2008-07-25 19:45:49 -0700 | [diff] [blame] | 173 | tpid = 0; |
| 174 | if (pid_alive(p)) { |
| 175 | struct task_struct *tracer = tracehook_tracer_task(p); |
| 176 | if (tracer) |
| 177 | tpid = task_pid_nr_ns(tracer, ns); |
| 178 | } |
David Howells | de09a97 | 2010-07-29 12:45:49 +0100 | [diff] [blame] | 179 | cred = get_task_cred(p); |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 180 | seq_printf(m, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | "State:\t%s\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | "Tgid:\t%d\n" |
| 183 | "Pid:\t%d\n" |
| 184 | "PPid:\t%d\n" |
| 185 | "TracerPid:\t%d\n" |
| 186 | "Uid:\t%d\t%d\t%d\t%d\n" |
| 187 | "Gid:\t%d\t%d\t%d\t%d\n", |
| 188 | get_task_state(p), |
Pavel Emelyanov | b488893 | 2007-10-18 23:40:14 -0700 | [diff] [blame] | 189 | task_tgid_nr_ns(p, ns), |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 190 | pid_nr_ns(pid, ns), |
Pavel Emelyanov | b488893 | 2007-10-18 23:40:14 -0700 | [diff] [blame] | 191 | ppid, tpid, |
David Howells | c69e8d9 | 2008-11-14 10:39:19 +1100 | [diff] [blame] | 192 | cred->uid, cred->euid, cred->suid, cred->fsuid, |
| 193 | cred->gid, cred->egid, cred->sgid, cred->fsgid); |
Oleg Nesterov | b0fa9db | 2006-10-02 02:18:54 -0700 | [diff] [blame] | 194 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | task_lock(p); |
Dipankar Sarma | badf166 | 2005-09-09 13:04:10 -0700 | [diff] [blame] | 196 | if (p->files) |
| 197 | fdt = files_fdtable(p->files); |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 198 | seq_printf(m, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | "FDSize:\t%d\n" |
| 200 | "Groups:\t", |
Dipankar Sarma | badf166 | 2005-09-09 13:04:10 -0700 | [diff] [blame] | 201 | fdt ? fdt->max_fds : 0); |
Dipankar Sarma | 4fb3a53 | 2005-09-16 19:28:13 -0700 | [diff] [blame] | 202 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | |
David Howells | c69e8d9 | 2008-11-14 10:39:19 +1100 | [diff] [blame] | 204 | group_info = cred->group_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | task_unlock(p); |
| 206 | |
Ingo Molnar | 8ea0260 | 2007-07-16 09:46:31 +0200 | [diff] [blame] | 207 | for (g = 0; g < min(group_info->ngroups, NGROUPS_SMALL); g++) |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 208 | seq_printf(m, "%d ", GROUP_AT(group_info, g)); |
David Howells | c69e8d9 | 2008-11-14 10:39:19 +1100 | [diff] [blame] | 209 | put_cred(cred); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 211 | seq_printf(m, "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | } |
| 213 | |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 214 | static void render_sigset_t(struct seq_file *m, const char *header, |
| 215 | sigset_t *set) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | { |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 217 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 219 | seq_printf(m, "%s", header); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
| 221 | i = _NSIG; |
| 222 | do { |
| 223 | int x = 0; |
| 224 | |
| 225 | i -= 4; |
| 226 | if (sigismember(set, i+1)) x |= 1; |
| 227 | if (sigismember(set, i+2)) x |= 2; |
| 228 | if (sigismember(set, i+3)) x |= 4; |
| 229 | if (sigismember(set, i+4)) x |= 8; |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 230 | seq_printf(m, "%x", x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | } while (i >= 4); |
| 232 | |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 233 | seq_printf(m, "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | } |
| 235 | |
| 236 | static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign, |
| 237 | sigset_t *catch) |
| 238 | { |
| 239 | struct k_sigaction *k; |
| 240 | int i; |
| 241 | |
| 242 | k = p->sighand->action; |
| 243 | for (i = 1; i <= _NSIG; ++i, ++k) { |
| 244 | if (k->sa.sa_handler == SIG_IGN) |
| 245 | sigaddset(ign, i); |
| 246 | else if (k->sa.sa_handler != SIG_DFL) |
| 247 | sigaddset(catch, i); |
| 248 | } |
| 249 | } |
| 250 | |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 251 | static inline void task_sig(struct seq_file *m, struct task_struct *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | { |
Oleg Nesterov | 5e6b3f4 | 2006-10-02 02:18:52 -0700 | [diff] [blame] | 253 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | sigset_t pending, shpending, blocked, ignored, caught; |
| 255 | int num_threads = 0; |
| 256 | unsigned long qsize = 0; |
| 257 | unsigned long qlim = 0; |
| 258 | |
| 259 | sigemptyset(&pending); |
| 260 | sigemptyset(&shpending); |
| 261 | sigemptyset(&blocked); |
| 262 | sigemptyset(&ignored); |
| 263 | sigemptyset(&caught); |
| 264 | |
Oleg Nesterov | 5e6b3f4 | 2006-10-02 02:18:52 -0700 | [diff] [blame] | 265 | if (lock_task_sighand(p, &flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | pending = p->pending.signal; |
| 267 | shpending = p->signal->shared_pending.signal; |
| 268 | blocked = p->blocked; |
| 269 | collect_sigign_sigcatch(p, &ignored, &caught); |
Oleg Nesterov | 7e49827 | 2010-05-26 14:43:22 -0700 | [diff] [blame] | 270 | num_threads = get_nr_threads(p); |
Paul E. McKenney | 7dc5215 | 2010-02-22 17:04:52 -0800 | [diff] [blame] | 271 | rcu_read_lock(); /* FIXME: is this correct? */ |
David Howells | c69e8d9 | 2008-11-14 10:39:19 +1100 | [diff] [blame] | 272 | qsize = atomic_read(&__task_cred(p)->user->sigpending); |
Paul E. McKenney | 7dc5215 | 2010-02-22 17:04:52 -0800 | [diff] [blame] | 273 | rcu_read_unlock(); |
Jiri Slaby | d554ed89 | 2010-03-05 13:42:42 -0800 | [diff] [blame] | 274 | qlim = task_rlimit(p, RLIMIT_SIGPENDING); |
Oleg Nesterov | 5e6b3f4 | 2006-10-02 02:18:52 -0700 | [diff] [blame] | 275 | unlock_task_sighand(p, &flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 278 | seq_printf(m, "Threads:\t%d\n", num_threads); |
| 279 | seq_printf(m, "SigQ:\t%lu/%lu\n", qsize, qlim); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
| 281 | /* render them all */ |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 282 | render_sigset_t(m, "SigPnd:\t", &pending); |
| 283 | render_sigset_t(m, "ShdPnd:\t", &shpending); |
| 284 | render_sigset_t(m, "SigBlk:\t", &blocked); |
| 285 | render_sigset_t(m, "SigIgn:\t", &ignored); |
| 286 | render_sigset_t(m, "SigCgt:\t", &caught); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | } |
| 288 | |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 289 | static void render_cap_t(struct seq_file *m, const char *header, |
| 290 | kernel_cap_t *a) |
Andrew Morgan | e338d26 | 2008-02-04 22:29:42 -0800 | [diff] [blame] | 291 | { |
| 292 | unsigned __capi; |
| 293 | |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 294 | seq_printf(m, "%s", header); |
Andrew Morgan | e338d26 | 2008-02-04 22:29:42 -0800 | [diff] [blame] | 295 | CAP_FOR_EACH_U32(__capi) { |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 296 | seq_printf(m, "%08x", |
Andrew G. Morgan | ca05a99 | 2008-05-27 22:05:17 -0700 | [diff] [blame] | 297 | a->cap[(_KERNEL_CAPABILITY_U32S-1) - __capi]); |
Andrew Morgan | e338d26 | 2008-02-04 22:29:42 -0800 | [diff] [blame] | 298 | } |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 299 | seq_printf(m, "\n"); |
Andrew Morgan | e338d26 | 2008-02-04 22:29:42 -0800 | [diff] [blame] | 300 | } |
| 301 | |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 302 | static inline void task_cap(struct seq_file *m, struct task_struct *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | { |
David Howells | c69e8d9 | 2008-11-14 10:39:19 +1100 | [diff] [blame] | 304 | const struct cred *cred; |
| 305 | kernel_cap_t cap_inheritable, cap_permitted, cap_effective, cap_bset; |
David Howells | b6dff3e | 2008-11-14 10:39:16 +1100 | [diff] [blame] | 306 | |
David Howells | c69e8d9 | 2008-11-14 10:39:19 +1100 | [diff] [blame] | 307 | rcu_read_lock(); |
| 308 | cred = __task_cred(p); |
| 309 | cap_inheritable = cred->cap_inheritable; |
| 310 | cap_permitted = cred->cap_permitted; |
| 311 | cap_effective = cred->cap_effective; |
| 312 | cap_bset = cred->cap_bset; |
| 313 | rcu_read_unlock(); |
| 314 | |
| 315 | render_cap_t(m, "CapInh:\t", &cap_inheritable); |
| 316 | render_cap_t(m, "CapPrm:\t", &cap_permitted); |
| 317 | render_cap_t(m, "CapEff:\t", &cap_effective); |
| 318 | render_cap_t(m, "CapBnd:\t", &cap_bset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | } |
| 320 | |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 321 | static inline void task_context_switch_counts(struct seq_file *m, |
| 322 | struct task_struct *p) |
Maxim Uvarov | b663a79 | 2007-07-15 23:40:48 -0700 | [diff] [blame] | 323 | { |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 324 | seq_printf(m, "voluntary_ctxt_switches:\t%lu\n" |
| 325 | "nonvoluntary_ctxt_switches:\t%lu\n", |
| 326 | p->nvcsw, |
| 327 | p->nivcsw); |
Maxim Uvarov | b663a79 | 2007-07-15 23:40:48 -0700 | [diff] [blame] | 328 | } |
| 329 | |
Heiko Carstens | d01d482 | 2009-09-21 11:06:27 +0200 | [diff] [blame] | 330 | static void task_cpus_allowed(struct seq_file *m, struct task_struct *task) |
| 331 | { |
| 332 | seq_printf(m, "Cpus_allowed:\t"); |
| 333 | seq_cpumask(m, &task->cpus_allowed); |
| 334 | seq_printf(m, "\n"); |
| 335 | seq_printf(m, "Cpus_allowed_list:\t"); |
| 336 | seq_cpumask_list(m, &task->cpus_allowed); |
| 337 | seq_printf(m, "\n"); |
| 338 | } |
| 339 | |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 340 | int proc_pid_status(struct seq_file *m, struct pid_namespace *ns, |
| 341 | struct pid *pid, struct task_struct *task) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | struct mm_struct *mm = get_task_mm(task); |
| 344 | |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 345 | task_name(m, task); |
| 346 | task_state(m, ns, pid, task); |
Ingo Molnar | 8ea0260 | 2007-07-16 09:46:31 +0200 | [diff] [blame] | 347 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | if (mm) { |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 349 | task_mem(m, mm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | mmput(mm); |
| 351 | } |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 352 | task_sig(m, task); |
| 353 | task_cap(m, task); |
Heiko Carstens | d01d482 | 2009-09-21 11:06:27 +0200 | [diff] [blame] | 354 | task_cpus_allowed(m, task); |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 355 | cpuset_task_status_allowed(m, task); |
Martin Schwidefsky | 347a8dc | 2006-01-06 00:19:28 -0800 | [diff] [blame] | 356 | #if defined(CONFIG_S390) |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 357 | task_show_regs(m, task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | #endif |
Eric W. Biederman | df5f831 | 2008-02-08 04:18:33 -0800 | [diff] [blame] | 359 | task_context_switch_counts(m, task); |
| 360 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | } |
| 362 | |
Eric W. Biederman | ee99274 | 2008-02-08 04:18:31 -0800 | [diff] [blame] | 363 | static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, |
| 364 | struct pid *pid, struct task_struct *task, int whole) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | { |
| 366 | unsigned long vsize, eip, esp, wchan = ~0UL; |
| 367 | long priority, nice; |
| 368 | int tty_pgrp = -1, tty_nr = 0; |
| 369 | sigset_t sigign, sigcatch; |
| 370 | char state; |
Ingo Molnar | 8ea0260 | 2007-07-16 09:46:31 +0200 | [diff] [blame] | 371 | pid_t ppid = 0, pgid = -1, sid = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | int num_threads = 0; |
Jake Edge | f83ce3e | 2009-05-04 12:51:14 -0600 | [diff] [blame] | 373 | int permitted; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | struct mm_struct *mm; |
| 375 | unsigned long long start_time; |
| 376 | unsigned long cmin_flt = 0, cmaj_flt = 0; |
| 377 | unsigned long min_flt = 0, maj_flt = 0; |
Christian Borntraeger | efe567f | 2007-08-23 15:18:02 +0200 | [diff] [blame] | 378 | cputime_t cutime, cstime, utime, stime; |
Laurent Vivier | 9ac5231 | 2007-10-15 17:00:19 +0200 | [diff] [blame] | 379 | cputime_t cgtime, gtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | unsigned long rsslim = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | char tcomm[sizeof(task->comm)]; |
Oleg Nesterov | a593d6e | 2006-10-02 02:18:53 -0700 | [diff] [blame] | 382 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | |
| 384 | state = *get_task_state(task); |
| 385 | vsize = eip = esp = 0; |
Jake Edge | f83ce3e | 2009-05-04 12:51:14 -0600 | [diff] [blame] | 386 | permitted = ptrace_may_access(task, PTRACE_MODE_READ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | mm = get_task_mm(task); |
| 388 | if (mm) { |
| 389 | vsize = task_vsize(mm); |
Jake Edge | f83ce3e | 2009-05-04 12:51:14 -0600 | [diff] [blame] | 390 | if (permitted) { |
| 391 | eip = KSTK_EIP(task); |
| 392 | esp = KSTK_ESP(task); |
| 393 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | } |
| 395 | |
| 396 | get_task_comm(tcomm, task); |
| 397 | |
| 398 | sigemptyset(&sigign); |
| 399 | sigemptyset(&sigcatch); |
Christian Borntraeger | efe567f | 2007-08-23 15:18:02 +0200 | [diff] [blame] | 400 | cutime = cstime = utime = stime = cputime_zero; |
Laurent Vivier | 9ac5231 | 2007-10-15 17:00:19 +0200 | [diff] [blame] | 401 | cgtime = gtime = cputime_zero; |
Alan Cox | 3cfd088 | 2006-09-29 02:00:41 -0700 | [diff] [blame] | 402 | |
Oleg Nesterov | a593d6e | 2006-10-02 02:18:53 -0700 | [diff] [blame] | 403 | if (lock_task_sighand(task, &flags)) { |
| 404 | struct signal_struct *sig = task->signal; |
Oleg Nesterov | a593d6e | 2006-10-02 02:18:53 -0700 | [diff] [blame] | 405 | |
Oleg Nesterov | 9159350 | 2006-12-08 02:36:07 -0800 | [diff] [blame] | 406 | if (sig->tty) { |
Alan Cox | 5d0fdf1 | 2008-04-30 00:53:31 -0700 | [diff] [blame] | 407 | struct pid *pgrp = tty_get_pgrp(sig->tty); |
| 408 | tty_pgrp = pid_nr_ns(pgrp, ns); |
| 409 | put_pid(pgrp); |
Oleg Nesterov | 9159350 | 2006-12-08 02:36:07 -0800 | [diff] [blame] | 410 | tty_nr = new_encode_dev(tty_devnum(sig->tty)); |
Oleg Nesterov | a593d6e | 2006-10-02 02:18:53 -0700 | [diff] [blame] | 411 | } |
| 412 | |
Oleg Nesterov | 7e49827 | 2010-05-26 14:43:22 -0700 | [diff] [blame] | 413 | num_threads = get_nr_threads(task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | collect_sigign_sigcatch(task, &sigign, &sigcatch); |
| 415 | |
Oleg Nesterov | a593d6e | 2006-10-02 02:18:53 -0700 | [diff] [blame] | 416 | cmin_flt = sig->cmin_flt; |
| 417 | cmaj_flt = sig->cmaj_flt; |
| 418 | cutime = sig->cutime; |
| 419 | cstime = sig->cstime; |
Laurent Vivier | 9ac5231 | 2007-10-15 17:00:19 +0200 | [diff] [blame] | 420 | cgtime = sig->cgtime; |
Jiri Slaby | d554ed89 | 2010-03-05 13:42:42 -0800 | [diff] [blame] | 421 | rsslim = ACCESS_ONCE(sig->rlim[RLIMIT_RSS].rlim_cur); |
Oleg Nesterov | a593d6e | 2006-10-02 02:18:53 -0700 | [diff] [blame] | 422 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | /* add up live thread stats at the group level */ |
| 424 | if (whole) { |
Oleg Nesterov | a593d6e | 2006-10-02 02:18:53 -0700 | [diff] [blame] | 425 | struct task_struct *t = task; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | do { |
| 427 | min_flt += t->min_flt; |
| 428 | maj_flt += t->maj_flt; |
Hidetoshi Seto | d5b7c78 | 2009-11-26 14:49:05 +0900 | [diff] [blame] | 429 | gtime = cputime_add(gtime, t->gtime); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | t = next_thread(t); |
| 431 | } while (t != task); |
Oleg Nesterov | a593d6e | 2006-10-02 02:18:53 -0700 | [diff] [blame] | 432 | |
| 433 | min_flt += sig->min_flt; |
| 434 | maj_flt += sig->maj_flt; |
Hidetoshi Seto | 0cf55e1 | 2009-12-02 17:28:07 +0900 | [diff] [blame] | 435 | thread_group_times(task, &utime, &stime); |
Christian Borntraeger | f9e2629 | 2007-10-19 20:52:40 +0200 | [diff] [blame] | 436 | gtime = cputime_add(gtime, sig->gtime); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | } |
| 438 | |
Pavel Emelyanov | b488893 | 2007-10-18 23:40:14 -0700 | [diff] [blame] | 439 | sid = task_session_nr_ns(task, ns); |
Oleg Nesterov | a98fdce | 2008-01-15 00:02:37 +0300 | [diff] [blame] | 440 | ppid = task_tgid_nr_ns(task->real_parent, ns); |
Pavel Emelyanov | b488893 | 2007-10-18 23:40:14 -0700 | [diff] [blame] | 441 | pgid = task_pgrp_nr_ns(task, ns); |
Oleg Nesterov | a593d6e | 2006-10-02 02:18:53 -0700 | [diff] [blame] | 442 | |
| 443 | unlock_task_sighand(task, &flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | |
Jake Edge | f83ce3e | 2009-05-04 12:51:14 -0600 | [diff] [blame] | 446 | if (permitted && (!whole || num_threads < 2)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | wchan = get_wchan(task); |
| 448 | if (!whole) { |
| 449 | min_flt = task->min_flt; |
| 450 | maj_flt = task->maj_flt; |
Hidetoshi Seto | d180c5b | 2009-11-26 14:48:30 +0900 | [diff] [blame] | 451 | task_times(task, &utime, &stime); |
Hidetoshi Seto | d5b7c78 | 2009-11-26 14:49:05 +0900 | [diff] [blame] | 452 | gtime = task->gtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | } |
| 454 | |
| 455 | /* scale priority and nice values from timeslices to -20..20 */ |
| 456 | /* to make it look like a "normal" Unix priority/nice value */ |
| 457 | priority = task_prio(task); |
| 458 | nice = task_nice(task); |
| 459 | |
| 460 | /* Temporary variable needed for gcc-2.96 */ |
| 461 | /* convert timespec -> nsec*/ |
Tomas Janousek | 924b42d | 2007-07-15 23:39:42 -0700 | [diff] [blame] | 462 | start_time = |
| 463 | (unsigned long long)task->real_start_time.tv_sec * NSEC_PER_SEC |
| 464 | + task->real_start_time.tv_nsec; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | /* convert nsec -> ticks */ |
| 466 | start_time = nsec_to_clock_t(start_time); |
| 467 | |
Eric W. Biederman | ee99274 | 2008-02-08 04:18:31 -0800 | [diff] [blame] | 468 | seq_printf(m, "%d (%s) %c %d %d %d %d %d %u %lu \ |
Roman Zippel | 4dee26b | 2006-03-26 01:38:10 -0800 | [diff] [blame] | 469 | %lu %lu %lu %lu %lu %ld %ld %ld %ld %d 0 %llu %lu %ld %lu %lu %lu %lu %lu \ |
Laurent Vivier | 9ac5231 | 2007-10-15 17:00:19 +0200 | [diff] [blame] | 470 | %lu %lu %lu %lu %lu %lu %lu %lu %d %d %u %u %llu %lu %ld\n", |
Eric W. Biederman | ee99274 | 2008-02-08 04:18:31 -0800 | [diff] [blame] | 471 | pid_nr_ns(pid, ns), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | tcomm, |
| 473 | state, |
| 474 | ppid, |
| 475 | pgid, |
| 476 | sid, |
| 477 | tty_nr, |
| 478 | tty_pgrp, |
| 479 | task->flags, |
| 480 | min_flt, |
| 481 | cmin_flt, |
| 482 | maj_flt, |
| 483 | cmaj_flt, |
Christian Borntraeger | efe567f | 2007-08-23 15:18:02 +0200 | [diff] [blame] | 484 | cputime_to_clock_t(utime), |
| 485 | cputime_to_clock_t(stime), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | cputime_to_clock_t(cutime), |
| 487 | cputime_to_clock_t(cstime), |
| 488 | priority, |
| 489 | nice, |
| 490 | num_threads, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | start_time, |
| 492 | vsize, |
Hugh Dickins | 4294621 | 2005-10-29 18:16:05 -0700 | [diff] [blame] | 493 | mm ? get_mm_rss(mm) : 0, |
Ingo Molnar | 8ea0260 | 2007-07-16 09:46:31 +0200 | [diff] [blame] | 494 | rsslim, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | mm ? mm->start_code : 0, |
| 496 | mm ? mm->end_code : 0, |
Robin Holt | 3444142 | 2010-05-11 14:06:46 -0700 | [diff] [blame] | 497 | (permitted && mm) ? mm->start_stack : 0, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | esp, |
| 499 | eip, |
| 500 | /* The signal information here is obsolete. |
| 501 | * It must be decimal for Linux 2.0 compatibility. |
| 502 | * Use /proc/#/status for real-time signals. |
| 503 | */ |
| 504 | task->pending.signal.sig[0] & 0x7fffffffUL, |
| 505 | task->blocked.sig[0] & 0x7fffffffUL, |
| 506 | sigign .sig[0] & 0x7fffffffUL, |
| 507 | sigcatch .sig[0] & 0x7fffffffUL, |
| 508 | wchan, |
| 509 | 0UL, |
| 510 | 0UL, |
| 511 | task->exit_signal, |
| 512 | task_cpu(task), |
| 513 | task->rt_priority, |
Shailabh Nagar | 2589045 | 2006-07-14 00:24:43 -0700 | [diff] [blame] | 514 | task->policy, |
Laurent Vivier | 9ac5231 | 2007-10-15 17:00:19 +0200 | [diff] [blame] | 515 | (unsigned long long)delayacct_blkio_ticks(task), |
| 516 | cputime_to_clock_t(gtime), |
| 517 | cputime_to_clock_t(cgtime)); |
Ingo Molnar | 8ea0260 | 2007-07-16 09:46:31 +0200 | [diff] [blame] | 518 | if (mm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | mmput(mm); |
Eric W. Biederman | ee99274 | 2008-02-08 04:18:31 -0800 | [diff] [blame] | 520 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | } |
| 522 | |
Eric W. Biederman | ee99274 | 2008-02-08 04:18:31 -0800 | [diff] [blame] | 523 | int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns, |
| 524 | struct pid *pid, struct task_struct *task) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | { |
Eric W. Biederman | ee99274 | 2008-02-08 04:18:31 -0800 | [diff] [blame] | 526 | return do_task_stat(m, ns, pid, task, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | } |
| 528 | |
Eric W. Biederman | ee99274 | 2008-02-08 04:18:31 -0800 | [diff] [blame] | 529 | int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns, |
| 530 | struct pid *pid, struct task_struct *task) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | { |
Eric W. Biederman | ee99274 | 2008-02-08 04:18:31 -0800 | [diff] [blame] | 532 | return do_task_stat(m, ns, pid, task, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | } |
| 534 | |
Eric W. Biederman | a56d3fc | 2008-02-08 04:18:32 -0800 | [diff] [blame] | 535 | int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns, |
| 536 | struct pid *pid, struct task_struct *task) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | { |
| 538 | int size = 0, resident = 0, shared = 0, text = 0, lib = 0, data = 0; |
| 539 | struct mm_struct *mm = get_task_mm(task); |
Ingo Molnar | 8ea0260 | 2007-07-16 09:46:31 +0200 | [diff] [blame] | 540 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | if (mm) { |
| 542 | size = task_statm(mm, &shared, &text, &data, &resident); |
| 543 | mmput(mm); |
| 544 | } |
Eric W. Biederman | a56d3fc | 2008-02-08 04:18:32 -0800 | [diff] [blame] | 545 | seq_printf(m, "%d %d %d %d %d %d %d\n", |
| 546 | size, resident, shared, text, lib, data, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | |
Eric W. Biederman | a56d3fc | 2008-02-08 04:18:32 -0800 | [diff] [blame] | 548 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | } |