diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/proc/array.c')
| -rw-r--r-- | ANDROID_3.4.5/fs/proc/array.c | 558 |
1 files changed, 0 insertions, 558 deletions
diff --git a/ANDROID_3.4.5/fs/proc/array.c b/ANDROID_3.4.5/fs/proc/array.c deleted file mode 100644 index f9bd395b..00000000 --- a/ANDROID_3.4.5/fs/proc/array.c +++ /dev/null @@ -1,558 +0,0 @@ -/* - * linux/fs/proc/array.c - * - * Copyright (C) 1992 by Linus Torvalds - * based on ideas by Darren Senn - * - * Fixes: - * Michael. K. Johnson: stat,statm extensions. - * <johnsonm@stolaf.edu> - * - * Pauline Middelink : Made cmdline,envline only break at '\0's, to - * make sure SET_PROCTITLE works. Also removed - * bad '!' which forced address recalculation for - * EVERY character on the current page. - * <middelin@polyware.iaf.nl> - * - * Danny ter Haar : added cpuinfo - * <dth@cistron.nl> - * - * Alessandro Rubini : profile extension. - * <rubini@ipvvis.unipv.it> - * - * Jeff Tranter : added BogoMips field to cpuinfo - * <Jeff_Tranter@Mitel.COM> - * - * Bruno Haible : remove 4K limit for the maps file - * <haible@ma2s2.mathematik.uni-karlsruhe.de> - * - * Yves Arrouye : remove removal of trailing spaces in get_array. - * <Yves.Arrouye@marin.fdn.fr> - * - * Jerome Forissier : added per-CPU time information to /proc/stat - * and /proc/<pid>/cpu extension - * <forissier@isia.cma.fr> - * - Incorporation and non-SMP safe operation - * of forissier patch in 2.1.78 by - * Hans Marcus <crowbar@concepts.nl> - * - * aeb@cwi.nl : /proc/partitions - * - * - * Alan Cox : security fixes. - * <alan@lxorguk.ukuu.org.uk> - * - * Al Viro : safe handling of mm_struct - * - * Gerhard Wichert : added BIGMEM support - * Siemens AG <Gerhard.Wichert@pdb.siemens.de> - * - * Al Viro & Jeff Garzik : moved most of the thing into base.c and - * : proc_misc.c. The rest may eventually go into - * : base.c too. - */ - -#include <linux/types.h> -#include <linux/errno.h> -#include <linux/time.h> -#include <linux/kernel.h> -#include <linux/kernel_stat.h> -#include <linux/tty.h> -#include <linux/string.h> -#include <linux/mman.h> -#include <linux/proc_fs.h> -#include <linux/ioport.h> -#include <linux/uaccess.h> -#include <linux/io.h> -#include <linux/mm.h> -#include <linux/hugetlb.h> -#include <linux/pagemap.h> -#include <linux/swap.h> -#include <linux/smp.h> -#include <linux/signal.h> -#include <linux/highmem.h> -#include <linux/file.h> -#include <linux/fdtable.h> -#include <linux/times.h> -#include <linux/cpuset.h> -#include <linux/rcupdate.h> -#include <linux/delayacct.h> -#include <linux/seq_file.h> -#include <linux/pid_namespace.h> -#include <linux/ptrace.h> -#include <linux/tracehook.h> - -#include <asm/pgtable.h> -#include <asm/processor.h> -#include "internal.h" - -static inline void task_name(struct seq_file *m, struct task_struct *p) -{ - int i; - char *buf, *end; - char *name; - char tcomm[sizeof(p->comm)]; - - get_task_comm(tcomm, p); - - seq_puts(m, "Name:\t"); - end = m->buf + m->size; - buf = m->buf + m->count; - name = tcomm; - i = sizeof(tcomm); - while (i && (buf < end)) { - unsigned char c = *name; - name++; - i--; - *buf = c; - if (!c) - break; - if (c == '\\') { - buf++; - if (buf < end) - *buf++ = c; - continue; - } - if (c == '\n') { - *buf++ = '\\'; - if (buf < end) - *buf++ = 'n'; - continue; - } - buf++; - } - m->count = buf - m->buf; - seq_putc(m, '\n'); -} - -/* - * The task state array is a strange "bitmap" of - * reasons to sleep. Thus "running" is zero, and - * you can test for combinations of others with - * simple bit tests. - */ -static const char * const task_state_array[] = { - "R (running)", /* 0 */ - "S (sleeping)", /* 1 */ - "D (disk sleep)", /* 2 */ - "T (stopped)", /* 4 */ - "t (tracing stop)", /* 8 */ - "Z (zombie)", /* 16 */ - "X (dead)", /* 32 */ - "x (dead)", /* 64 */ - "K (wakekill)", /* 128 */ - "W (waking)", /* 256 */ -}; - -static inline const char *get_task_state(struct task_struct *tsk) -{ - unsigned int state = (tsk->state & TASK_REPORT) | tsk->exit_state; - const char * const *p = &task_state_array[0]; - - BUILD_BUG_ON(1 + ilog2(TASK_STATE_MAX) != ARRAY_SIZE(task_state_array)); - - while (state) { - p++; - state >>= 1; - } - return *p; -} - -static inline void task_state(struct seq_file *m, struct pid_namespace *ns, - struct pid *pid, struct task_struct *p) -{ - struct group_info *group_info; - int g; - struct fdtable *fdt = NULL; - const struct cred *cred; - pid_t ppid, tpid; - - rcu_read_lock(); - ppid = pid_alive(p) ? - task_tgid_nr_ns(rcu_dereference(p->real_parent), ns) : 0; - tpid = 0; - if (pid_alive(p)) { - struct task_struct *tracer = ptrace_parent(p); - if (tracer) - tpid = task_pid_nr_ns(tracer, ns); - } - cred = get_task_cred(p); - seq_printf(m, - "State:\t%s\n" - "Tgid:\t%d\n" - "Pid:\t%d\n" - "PPid:\t%d\n" - "TracerPid:\t%d\n" - "Uid:\t%d\t%d\t%d\t%d\n" - "Gid:\t%d\t%d\t%d\t%d\n", - get_task_state(p), - task_tgid_nr_ns(p, ns), - pid_nr_ns(pid, ns), - ppid, tpid, - cred->uid, cred->euid, cred->suid, cred->fsuid, - cred->gid, cred->egid, cred->sgid, cred->fsgid); - - task_lock(p); - if (p->files) - fdt = files_fdtable(p->files); - seq_printf(m, - "FDSize:\t%d\n" - "Groups:\t", - fdt ? fdt->max_fds : 0); - rcu_read_unlock(); - - group_info = cred->group_info; - task_unlock(p); - - for (g = 0; g < min(group_info->ngroups, NGROUPS_SMALL); g++) - seq_printf(m, "%d ", GROUP_AT(group_info, g)); - put_cred(cred); - - seq_putc(m, '\n'); -} - -static void render_sigset_t(struct seq_file *m, const char *header, - sigset_t *set) -{ - int i; - - seq_puts(m, header); - - i = _NSIG; - do { - int x = 0; - - i -= 4; - if (sigismember(set, i+1)) x |= 1; - if (sigismember(set, i+2)) x |= 2; - if (sigismember(set, i+3)) x |= 4; - if (sigismember(set, i+4)) x |= 8; - seq_printf(m, "%x", x); - } while (i >= 4); - - seq_putc(m, '\n'); -} - -static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign, - sigset_t *catch) -{ - struct k_sigaction *k; - int i; - - k = p->sighand->action; - for (i = 1; i <= _NSIG; ++i, ++k) { - if (k->sa.sa_handler == SIG_IGN) - sigaddset(ign, i); - else if (k->sa.sa_handler != SIG_DFL) - sigaddset(catch, i); - } -} - -static inline void task_sig(struct seq_file *m, struct task_struct *p) -{ - unsigned long flags; - sigset_t pending, shpending, blocked, ignored, caught; - int num_threads = 0; - unsigned long qsize = 0; - unsigned long qlim = 0; - - sigemptyset(&pending); - sigemptyset(&shpending); - sigemptyset(&blocked); - sigemptyset(&ignored); - sigemptyset(&caught); - - if (lock_task_sighand(p, &flags)) { - pending = p->pending.signal; - shpending = p->signal->shared_pending.signal; - blocked = p->blocked; - collect_sigign_sigcatch(p, &ignored, &caught); - num_threads = get_nr_threads(p); - rcu_read_lock(); /* FIXME: is this correct? */ - qsize = atomic_read(&__task_cred(p)->user->sigpending); - rcu_read_unlock(); - qlim = task_rlimit(p, RLIMIT_SIGPENDING); - unlock_task_sighand(p, &flags); - } - - seq_printf(m, "Threads:\t%d\n", num_threads); - seq_printf(m, "SigQ:\t%lu/%lu\n", qsize, qlim); - - /* render them all */ - render_sigset_t(m, "SigPnd:\t", &pending); - render_sigset_t(m, "ShdPnd:\t", &shpending); - render_sigset_t(m, "SigBlk:\t", &blocked); - render_sigset_t(m, "SigIgn:\t", &ignored); - render_sigset_t(m, "SigCgt:\t", &caught); -} - -static void render_cap_t(struct seq_file *m, const char *header, - kernel_cap_t *a) -{ - unsigned __capi; - - seq_puts(m, header); - CAP_FOR_EACH_U32(__capi) { - seq_printf(m, "%08x", - a->cap[(_KERNEL_CAPABILITY_U32S-1) - __capi]); - } - seq_putc(m, '\n'); -} - -static inline void task_cap(struct seq_file *m, struct task_struct *p) -{ - const struct cred *cred; - kernel_cap_t cap_inheritable, cap_permitted, cap_effective, cap_bset; - - rcu_read_lock(); - cred = __task_cred(p); - cap_inheritable = cred->cap_inheritable; - cap_permitted = cred->cap_permitted; - cap_effective = cred->cap_effective; - cap_bset = cred->cap_bset; - rcu_read_unlock(); - - render_cap_t(m, "CapInh:\t", &cap_inheritable); - render_cap_t(m, "CapPrm:\t", &cap_permitted); - render_cap_t(m, "CapEff:\t", &cap_effective); - render_cap_t(m, "CapBnd:\t", &cap_bset); -} - -static inline void task_context_switch_counts(struct seq_file *m, - struct task_struct *p) -{ - seq_printf(m, "voluntary_ctxt_switches:\t%lu\n" - "nonvoluntary_ctxt_switches:\t%lu\n", - p->nvcsw, - p->nivcsw); -} - -static void task_cpus_allowed(struct seq_file *m, struct task_struct *task) -{ - seq_puts(m, "Cpus_allowed:\t"); - seq_cpumask(m, &task->cpus_allowed); - seq_putc(m, '\n'); - seq_puts(m, "Cpus_allowed_list:\t"); - seq_cpumask_list(m, &task->cpus_allowed); - seq_putc(m, '\n'); -} - -int proc_pid_status(struct seq_file *m, struct pid_namespace *ns, - struct pid *pid, struct task_struct *task) -{ - struct mm_struct *mm = get_task_mm(task); - - task_name(m, task); - task_state(m, ns, pid, task); - - if (mm) { - task_mem(m, mm); - mmput(mm); - } - task_sig(m, task); - task_cap(m, task); - task_cpus_allowed(m, task); - cpuset_task_status_allowed(m, task); - task_context_switch_counts(m, task); - return 0; -} - -static int do_task_stat(struct seq_file *m, struct pid_namespace *ns, - struct pid *pid, struct task_struct *task, int whole) -{ - unsigned long vsize, eip, esp, wchan = ~0UL; - long priority, nice; - int tty_pgrp = -1, tty_nr = 0; - sigset_t sigign, sigcatch; - char state; - pid_t ppid = 0, pgid = -1, sid = -1; - int num_threads = 0; - int permitted; - struct mm_struct *mm; - unsigned long long start_time; - unsigned long cmin_flt = 0, cmaj_flt = 0; - unsigned long min_flt = 0, maj_flt = 0; - cputime_t cutime, cstime, utime, stime; - cputime_t cgtime, gtime; - unsigned long rsslim = 0; - char tcomm[sizeof(task->comm)]; - unsigned long flags; - - state = *get_task_state(task); - vsize = eip = esp = 0; - permitted = ptrace_may_access(task, PTRACE_MODE_READ | PTRACE_MODE_NOAUDIT); - mm = get_task_mm(task); - if (mm) { - vsize = task_vsize(mm); - if (permitted) { - eip = KSTK_EIP(task); - esp = KSTK_ESP(task); - } - } - - get_task_comm(tcomm, task); - - sigemptyset(&sigign); - sigemptyset(&sigcatch); - cutime = cstime = utime = stime = 0; - cgtime = gtime = 0; - - if (lock_task_sighand(task, &flags)) { - struct signal_struct *sig = task->signal; - - if (sig->tty) { - struct pid *pgrp = tty_get_pgrp(sig->tty); - tty_pgrp = pid_nr_ns(pgrp, ns); - put_pid(pgrp); - tty_nr = new_encode_dev(tty_devnum(sig->tty)); - } - - num_threads = get_nr_threads(task); - collect_sigign_sigcatch(task, &sigign, &sigcatch); - - cmin_flt = sig->cmin_flt; - cmaj_flt = sig->cmaj_flt; - cutime = sig->cutime; - cstime = sig->cstime; - cgtime = sig->cgtime; - rsslim = ACCESS_ONCE(sig->rlim[RLIMIT_RSS].rlim_cur); - - /* add up live thread stats at the group level */ - if (whole) { - struct task_struct *t = task; - do { - min_flt += t->min_flt; - maj_flt += t->maj_flt; - gtime += t->gtime; - t = next_thread(t); - } while (t != task); - - min_flt += sig->min_flt; - maj_flt += sig->maj_flt; - thread_group_times(task, &utime, &stime); - gtime += sig->gtime; - } - - sid = task_session_nr_ns(task, ns); - ppid = task_tgid_nr_ns(task->real_parent, ns); - pgid = task_pgrp_nr_ns(task, ns); - - unlock_task_sighand(task, &flags); - } - - if (permitted && (!whole || num_threads < 2)) - wchan = get_wchan(task); - if (!whole) { - min_flt = task->min_flt; - maj_flt = task->maj_flt; - task_times(task, &utime, &stime); - gtime = task->gtime; - } - - /* scale priority and nice values from timeslices to -20..20 */ - /* to make it look like a "normal" Unix priority/nice value */ - priority = task_prio(task); - nice = task_nice(task); - - /* Temporary variable needed for gcc-2.96 */ - /* convert timespec -> nsec*/ - start_time = - (unsigned long long)task->real_start_time.tv_sec * NSEC_PER_SEC - + task->real_start_time.tv_nsec; - /* convert nsec -> ticks */ - start_time = nsec_to_clock_t(start_time); - - seq_printf(m, "%d (%s) %c", pid_nr_ns(pid, ns), tcomm, state); - seq_put_decimal_ll(m, ' ', ppid); - seq_put_decimal_ll(m, ' ', pgid); - seq_put_decimal_ll(m, ' ', sid); - seq_put_decimal_ll(m, ' ', tty_nr); - seq_put_decimal_ll(m, ' ', tty_pgrp); - seq_put_decimal_ull(m, ' ', task->flags); - seq_put_decimal_ull(m, ' ', min_flt); - seq_put_decimal_ull(m, ' ', cmin_flt); - seq_put_decimal_ull(m, ' ', maj_flt); - seq_put_decimal_ull(m, ' ', cmaj_flt); - seq_put_decimal_ull(m, ' ', cputime_to_clock_t(utime)); - seq_put_decimal_ull(m, ' ', cputime_to_clock_t(stime)); - seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cutime)); - seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cstime)); - seq_put_decimal_ll(m, ' ', priority); - seq_put_decimal_ll(m, ' ', nice); - seq_put_decimal_ll(m, ' ', num_threads); - seq_put_decimal_ull(m, ' ', 0); - seq_put_decimal_ull(m, ' ', start_time); - seq_put_decimal_ull(m, ' ', vsize); - seq_put_decimal_ll(m, ' ', mm ? get_mm_rss(mm) : 0); - seq_put_decimal_ull(m, ' ', rsslim); - seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->start_code : 1) : 0); - seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->end_code : 1) : 0); - seq_put_decimal_ull(m, ' ', (permitted && mm) ? mm->start_stack : 0); - seq_put_decimal_ull(m, ' ', esp); - seq_put_decimal_ull(m, ' ', eip); - /* The signal information here is obsolete. - * It must be decimal for Linux 2.0 compatibility. - * Use /proc/#/status for real-time signals. - */ - seq_put_decimal_ull(m, ' ', task->pending.signal.sig[0] & 0x7fffffffUL); - seq_put_decimal_ull(m, ' ', task->blocked.sig[0] & 0x7fffffffUL); - seq_put_decimal_ull(m, ' ', sigign.sig[0] & 0x7fffffffUL); - seq_put_decimal_ull(m, ' ', sigcatch.sig[0] & 0x7fffffffUL); - seq_put_decimal_ull(m, ' ', wchan); - seq_put_decimal_ull(m, ' ', 0); - seq_put_decimal_ull(m, ' ', 0); - seq_put_decimal_ll(m, ' ', task->exit_signal); - seq_put_decimal_ll(m, ' ', task_cpu(task)); - seq_put_decimal_ull(m, ' ', task->rt_priority); - seq_put_decimal_ull(m, ' ', task->policy); - seq_put_decimal_ull(m, ' ', delayacct_blkio_ticks(task)); - seq_put_decimal_ull(m, ' ', cputime_to_clock_t(gtime)); - seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cgtime)); - seq_put_decimal_ull(m, ' ', (mm && permitted) ? mm->start_data : 0); - seq_put_decimal_ull(m, ' ', (mm && permitted) ? mm->end_data : 0); - seq_put_decimal_ull(m, ' ', (mm && permitted) ? mm->start_brk : 0); - seq_putc(m, '\n'); - if (mm) - mmput(mm); - return 0; -} - -int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns, - struct pid *pid, struct task_struct *task) -{ - return do_task_stat(m, ns, pid, task, 0); -} - -int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns, - struct pid *pid, struct task_struct *task) -{ - return do_task_stat(m, ns, pid, task, 1); -} - -int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns, - struct pid *pid, struct task_struct *task) -{ - unsigned long size = 0, resident = 0, shared = 0, text = 0, data = 0; - struct mm_struct *mm = get_task_mm(task); - - if (mm) { - size = task_statm(mm, &shared, &text, &data, &resident); - mmput(mm); - } - /* - * For quick read, open code by putting numbers directly - * expected format is - * seq_printf(m, "%lu %lu %lu %lu 0 %lu 0\n", - * size, resident, shared, text, data); - */ - seq_put_decimal_ull(m, 0, size); - seq_put_decimal_ull(m, ' ', resident); - seq_put_decimal_ull(m, ' ', shared); - seq_put_decimal_ull(m, ' ', text); - seq_put_decimal_ull(m, ' ', 0); - seq_put_decimal_ull(m, ' ', data); - seq_put_decimal_ull(m, ' ', 0); - seq_putc(m, '\n'); - - return 0; -} |