Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

17 files changed, 5782 insertions, 0 deletions

diff --git a/fs/proc/Makefile b/fs/proc/Makefile
new file mode 100644
index 00000000000..738b9b60293
--- /dev/null
+++ b/fs/proc/Makefile
@@ -0,0 +1,14 @@
+#
+# Makefile for the Linux proc filesystem routines.
+#
+
+obj-$(CONFIG_PROC_FS) += proc.o
+
+proc-y			:= nommu.o task_nommu.o
+proc-$(CONFIG_MMU)	:= mmu.o task_mmu.o
+
+proc-y       += inode.o root.o base.o generic.o array.o \
+		kmsg.o proc_tty.o proc_misc.o
+
+proc-$(CONFIG_PROC_KCORE)	+= kcore.o
+proc-$(CONFIG_PROC_DEVICETREE)	+= proc_devtree.o
diff --git a/fs/proc/array.c b/fs/proc/array.c
new file mode 100644
index 00000000000..37668fe998a
--- /dev/null
+++ b/fs/proc/array.c
@@ -0,0 +1,484 @@
+/*
+ *  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.Cox@linux.org>
+ *
+ * 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/config.h>
+#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/mm.h>
+#include <linux/hugetlb.h>
+#include <linux/pagemap.h>
+#include <linux/swap.h>
+#include <linux/slab.h>
+#include <linux/smp.h>
+#include <linux/signal.h>
+#include <linux/highmem.h>
+#include <linux/file.h>
+#include <linux/times.h>
+#include <linux/cpuset.h>
+
+#include <asm/uaccess.h>
+#include <asm/pgtable.h>
+#include <asm/io.h>
+#include <asm/processor.h>
+#include "internal.h"
+
+/* Gcc optimizes away "strlen(x)" for constant x */
+#define ADDBUF(buffer, string) \
+do { memcpy(buffer, string, strlen(string)); \
+     buffer += strlen(string); } while (0)
+
+static inline char * task_name(struct task_struct *p, char * buf)
+{
+	int i;
+	char * name;
+	char tcomm[sizeof(p->comm)];
+
+	get_task_comm(tcomm, p);
+
+	ADDBUF(buf, "Name:\t");
+	name = tcomm;
+	i = sizeof(tcomm);
+	do {
+		unsigned char c = *name;
+		name++;
+		i--;
+		*buf = c;
+		if (!c)
+			break;
+		if (c == '\\') {
+			buf[1] = c;
+			buf += 2;
+			continue;
+		}
+		if (c == '\n') {
+			buf[0] = '\\';
+			buf[1] = 'n';
+			buf += 2;
+			continue;
+		}
+		buf++;
+	} while (i);
+	*buf = '\n';
+	return buf+1;
+}
+
+/*
+ * 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 *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 */
+};
+
+static inline const char * get_task_state(struct task_struct *tsk)
+{
+	unsigned int state = (tsk->state & (TASK_RUNNING |
+					    TASK_INTERRUPTIBLE |
+					    TASK_UNINTERRUPTIBLE |
+					    TASK_STOPPED |
+					    TASK_TRACED)) |
+			(tsk->exit_state & (EXIT_ZOMBIE |
+					    EXIT_DEAD));
+	const char **p = &task_state_array[0];
+
+	while (state) {
+		p++;
+		state >>= 1;
+	}
+	return *p;
+}
+
+static inline char * task_state(struct task_struct *p, char *buffer)
+{
+	struct group_info *group_info;
+	int g;
+
+	read_lock(&tasklist_lock);
+	buffer += sprintf(buffer,
+		"State:\t%s\n"
+		"SleepAVG:\t%lu%%\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),
+		(p->sleep_avg/1024)*100/(1020000000/1024),
+	       	p->tgid,
+		p->pid, pid_alive(p) ? p->group_leader->real_parent->tgid : 0,
+		pid_alive(p) && p->ptrace ? p->parent->pid : 0,
+		p->uid, p->euid, p->suid, p->fsuid,
+		p->gid, p->egid, p->sgid, p->fsgid);
+	read_unlock(&tasklist_lock);
+	task_lock(p);
+	buffer += sprintf(buffer,
+		"FDSize:\t%d\n"
+		"Groups:\t",
+		p->files ? p->files->max_fds : 0);
+
+	group_info = p->group_info;
+	get_group_info(group_info);
+	task_unlock(p);
+
+	for (g = 0; g < min(group_info->ngroups,NGROUPS_SMALL); g++)
+		buffer += sprintf(buffer, "%d ", GROUP_AT(group_info,g));
+	put_group_info(group_info);
+
+	buffer += sprintf(buffer, "\n");
+	return buffer;
+}
+
+static char * render_sigset_t(const char *header, sigset_t *set, char *buffer)
+{
+	int i, len;
+
+	len = strlen(header);
+	memcpy(buffer, header, len);
+	buffer += len;
+
+	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;
+		*buffer++ = (x < 10 ? '0' : 'a' - 10) + x;
+	} while (i >= 4);
+
+	*buffer++ = '\n';
+	*buffer = 0;
+	return buffer;
+}
+
+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 char * task_sig(struct task_struct *p, char *buffer)
+{
+	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);
+
+	/* Gather all the data with the appropriate locks held */
+	read_lock(&tasklist_lock);
+	if (p->sighand) {
+		spin_lock_irq(&p->sighand->siglock);
+		pending = p->pending.signal;
+		shpending = p->signal->shared_pending.signal;
+		blocked = p->blocked;
+		collect_sigign_sigcatch(p, &ignored, &caught);
+		num_threads = atomic_read(&p->signal->count);
+		qsize = atomic_read(&p->user->sigpending);
+		qlim = p->signal->rlim[RLIMIT_SIGPENDING].rlim_cur;
+		spin_unlock_irq(&p->sighand->siglock);
+	}
+	read_unlock(&tasklist_lock);
+
+	buffer += sprintf(buffer, "Threads:\t%d\n", num_threads);
+	buffer += sprintf(buffer, "SigQ:\t%lu/%lu\n", qsize, qlim);
+
+	/* render them all */
+	buffer = render_sigset_t("SigPnd:\t", &pending, buffer);
+	buffer = render_sigset_t("ShdPnd:\t", &shpending, buffer);
+	buffer = render_sigset_t("SigBlk:\t", &blocked, buffer);
+	buffer = render_sigset_t("SigIgn:\t", &ignored, buffer);
+	buffer = render_sigset_t("SigCgt:\t", &caught, buffer);
+
+	return buffer;
+}
+
+static inline char *task_cap(struct task_struct *p, char *buffer)
+{
+    return buffer + sprintf(buffer, "CapInh:\t%016x\n"
+			    "CapPrm:\t%016x\n"
+			    "CapEff:\t%016x\n",
+			    cap_t(p->cap_inheritable),
+			    cap_t(p->cap_permitted),
+			    cap_t(p->cap_effective));
+}
+
+int proc_pid_status(struct task_struct *task, char * buffer)
+{
+	char * orig = buffer;
+	struct mm_struct *mm = get_task_mm(task);
+
+	buffer = task_name(task, buffer);
+	buffer = task_state(task, buffer);
+ 
+	if (mm) {
+		buffer = task_mem(mm, buffer);
+		mmput(mm);
+	}
+	buffer = task_sig(task, buffer);
+	buffer = task_cap(task, buffer);
+	buffer = cpuset_task_status_allowed(task, buffer);
+#if defined(CONFIG_ARCH_S390)
+	buffer = task_show_regs(task, buffer);
+#endif
+	return buffer - orig;
+}
+
+static int do_task_stat(struct task_struct *task, char * buffer, 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;
+	int res;
+ 	pid_t ppid, pgid = -1, sid = -1;
+	int num_threads = 0;
+	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;
+	unsigned long rsslim = 0;
+	unsigned long it_real_value = 0;
+	struct task_struct *t;
+	char tcomm[sizeof(task->comm)];
+
+	state = *get_task_state(task);
+	vsize = eip = esp = 0;
+	mm = get_task_mm(task);
+	if (mm) {
+		vsize = task_vsize(mm);
+		eip = KSTK_EIP(task);
+		esp = KSTK_ESP(task);
+	}
+
+	get_task_comm(tcomm, task);
+
+	sigemptyset(&sigign);
+	sigemptyset(&sigcatch);
+	cutime = cstime = utime = stime = cputime_zero;
+	read_lock(&tasklist_lock);
+	if (task->sighand) {
+		spin_lock_irq(&task->sighand->siglock);
+		num_threads = atomic_read(&task->signal->count);
+		collect_sigign_sigcatch(task, &sigign, &sigcatch);
+
+		/* add up live thread stats at the group level */
+		if (whole) {
+			t = task;
+			do {
+				min_flt += t->min_flt;
+				maj_flt += t->maj_flt;
+				utime = cputime_add(utime, t->utime);
+				stime = cputime_add(stime, t->stime);
+				t = next_thread(t);
+			} while (t != task);
+		}
+
+		spin_unlock_irq(&task->sighand->siglock);
+	}
+	if (task->signal) {
+		if (task->signal->tty) {
+			tty_pgrp = task->signal->tty->pgrp;
+			tty_nr = new_encode_dev(tty_devnum(task->signal->tty));
+		}
+		pgid = process_group(task);
+		sid = task->signal->session;
+		cmin_flt = task->signal->cmin_flt;
+		cmaj_flt = task->signal->cmaj_flt;
+		cutime = task->signal->cutime;
+		cstime = task->signal->cstime;
+		rsslim = task->signal->rlim[RLIMIT_RSS].rlim_cur;
+		if (whole) {
+			min_flt += task->signal->min_flt;
+			maj_flt += task->signal->maj_flt;
+			utime = cputime_add(utime, task->signal->utime);
+			stime = cputime_add(stime, task->signal->stime);
+		}
+		it_real_value = task->signal->it_real_value;
+	}
+	ppid = pid_alive(task) ? task->group_leader->real_parent->tgid : 0;
+	read_unlock(&tasklist_lock);
+
+	if (!whole || num_threads<2)
+		wchan = get_wchan(task);
+	if (!whole) {
+		min_flt = task->min_flt;
+		maj_flt = task->maj_flt;
+		utime = task->utime;
+		stime = task->stime;
+	}
+
+	/* 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->start_time.tv_sec * NSEC_PER_SEC
+				+ task->start_time.tv_nsec;
+	/* convert nsec -> ticks */
+	start_time = nsec_to_clock_t(start_time);
+
+	res = sprintf(buffer,"%d (%s) %c %d %d %d %d %d %lu %lu \
+%lu %lu %lu %lu %lu %ld %ld %ld %ld %d %ld %llu %lu %ld %lu %lu %lu %lu %lu \
+%lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %lu\n",
+		task->pid,
+		tcomm,
+		state,
+		ppid,
+		pgid,
+		sid,
+		tty_nr,
+		tty_pgrp,
+		task->flags,
+		min_flt,
+		cmin_flt,
+		maj_flt,
+		cmaj_flt,
+		cputime_to_clock_t(utime),
+		cputime_to_clock_t(stime),
+		cputime_to_clock_t(cutime),
+		cputime_to_clock_t(cstime),
+		priority,
+		nice,
+		num_threads,
+		jiffies_to_clock_t(it_real_value),
+		start_time,
+		vsize,
+		mm ? get_mm_counter(mm, rss) : 0, /* you might want to shift this left 3 */
+	        rsslim,
+		mm ? mm->start_code : 0,
+		mm ? mm->end_code : 0,
+		mm ? mm->start_stack : 0,
+		esp,
+		eip,
+		/* The signal information here is obsolete.
+		 * It must be decimal for Linux 2.0 compatibility.
+		 * Use /proc/#/status for real-time signals.
+		 */
+		task->pending.signal.sig[0] & 0x7fffffffUL,
+		task->blocked.sig[0] & 0x7fffffffUL,
+		sigign      .sig[0] & 0x7fffffffUL,
+		sigcatch    .sig[0] & 0x7fffffffUL,
+		wchan,
+		0UL,
+		0UL,
+		task->exit_signal,
+		task_cpu(task),
+		task->rt_priority,
+		task->policy);
+	if(mm)
+		mmput(mm);
+	return res;
+}
+
+int proc_tid_stat(struct task_struct *task, char * buffer)
+{
+	return do_task_stat(task, buffer, 0);
+}
+
+int proc_tgid_stat(struct task_struct *task, char * buffer)
+{
+	return do_task_stat(task, buffer, 1);
+}
+
+int proc_pid_statm(struct task_struct *task, char *buffer)
+{
+	int size = 0, resident = 0, shared = 0, text = 0, lib = 0, data = 0;
+	struct mm_struct *mm = get_task_mm(task);
+	
+	if (mm) {
+		size = task_statm(mm, &shared, &text, &data, &resident);
+		mmput(mm);
+	}
+
+	return sprintf(buffer,"%d %d %d %d %d %d %d\n",
+		       size, resident, shared, text, lib, data, 0);
+}
diff --git a/fs/proc/base.c b/fs/proc/base.c
new file mode 100644
index 00000000000..dad8ea4e00a
--- /dev/null
+++ b/fs/proc/base.c
@@ -0,0 +1,2056 @@
+/*
+ *  linux/fs/proc/base.c
+ *
+ *  Copyright (C) 1991, 1992 Linus Torvalds
+ *
+ *  proc base directory handling functions
+ *
+ *  1999, Al Viro. Rewritten. Now it covers the whole per-process part.
+ *  Instead of using magical inumbers to determine the kind of object
+ *  we allocate and fill in-core inodes upon lookup. They don't even
+ *  go into icache. We cache the reference to task_struct upon lookup too.
+ *  Eventually it should become a filesystem in its own. We don't use the
+ *  rest of procfs anymore.
+ */
+
+#include <asm/uaccess.h>
+
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/time.h>
+#include <linux/proc_fs.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/file.h>
+#include <linux/string.h>
+#include <linux/seq_file.h>
+#include <linux/namei.h>
+#include <linux/namespace.h>
+#include <linux/mm.h>
+#include <linux/smp_lock.h>
+#include <linux/kallsyms.h>
+#include <linux/mount.h>
+#include <linux/security.h>
+#include <linux/ptrace.h>
+#include <linux/seccomp.h>
+#include <linux/cpuset.h>
+#include <linux/audit.h>
+#include "internal.h"
+
+/*
+ * For hysterical raisins we keep the same inumbers as in the old procfs.
+ * Feel free to change the macro below - just keep the range distinct from
+ * inumbers of the rest of procfs (currently those are in 0x0000--0xffff).
+ * As soon as we'll get a separate superblock we will be able to forget
+ * about magical ranges too.
+ */
+
+#define fake_ino(pid,ino) (((pid)<<16)|(ino))
+
+enum pid_directory_inos {
+	PROC_TGID_INO = 2,
+	PROC_TGID_TASK,
+	PROC_TGID_STATUS,
+	PROC_TGID_MEM,
+#ifdef CONFIG_SECCOMP
+	PROC_TGID_SECCOMP,
+#endif
+	PROC_TGID_CWD,
+	PROC_TGID_ROOT,
+	PROC_TGID_EXE,
+	PROC_TGID_FD,
+	PROC_TGID_ENVIRON,
+	PROC_TGID_AUXV,
+	PROC_TGID_CMDLINE,
+	PROC_TGID_STAT,
+	PROC_TGID_STATM,
+	PROC_TGID_MAPS,
+	PROC_TGID_MOUNTS,
+	PROC_TGID_WCHAN,
+#ifdef CONFIG_SCHEDSTATS
+	PROC_TGID_SCHEDSTAT,
+#endif
+#ifdef CONFIG_CPUSETS
+	PROC_TGID_CPUSET,
+#endif
+#ifdef CONFIG_SECURITY
+	PROC_TGID_ATTR,
+	PROC_TGID_ATTR_CURRENT,
+	PROC_TGID_ATTR_PREV,
+	PROC_TGID_ATTR_EXEC,
+	PROC_TGID_ATTR_FSCREATE,
+#endif
+#ifdef CONFIG_AUDITSYSCALL
+	PROC_TGID_LOGINUID,
+#endif
+	PROC_TGID_FD_DIR,
+	PROC_TGID_OOM_SCORE,
+	PROC_TGID_OOM_ADJUST,
+	PROC_TID_INO,
+	PROC_TID_STATUS,
+	PROC_TID_MEM,
+#ifdef CONFIG_SECCOMP
+	PROC_TID_SECCOMP,
+#endif
+	PROC_TID_CWD,
+	PROC_TID_ROOT,
+	PROC_TID_EXE,
+	PROC_TID_FD,
+	PROC_TID_ENVIRON,
+	PROC_TID_AUXV,
+	PROC_TID_CMDLINE,
+	PROC_TID_STAT,
+	PROC_TID_STATM,
+	PROC_TID_MAPS,
+	PROC_TID_MOUNTS,
+	PROC_TID_WCHAN,
+#ifdef CONFIG_SCHEDSTATS
+	PROC_TID_SCHEDSTAT,
+#endif
+#ifdef CONFIG_CPUSETS
+	PROC_TID_CPUSET,
+#endif
+#ifdef CONFIG_SECURITY
+	PROC_TID_ATTR,
+	PROC_TID_ATTR_CURRENT,
+	PROC_TID_ATTR_PREV,
+	PROC_TID_ATTR_EXEC,
+	PROC_TID_ATTR_FSCREATE,
+#endif
+#ifdef CONFIG_AUDITSYSCALL
+	PROC_TID_LOGINUID,
+#endif
+	PROC_TID_FD_DIR = 0x8000,	/* 0x8000-0xffff */
+	PROC_TID_OOM_SCORE,
+	PROC_TID_OOM_ADJUST,
+};
+
+struct pid_entry {
+	int type;
+	int len;
+	char *name;
+	mode_t mode;
+};
+
+#define E(type,name,mode) {(type),sizeof(name)-1,(name),(mode)}
+
+static struct pid_entry tgid_base_stuff[] = {
+	E(PROC_TGID_TASK,      "task",    S_IFDIR|S_IRUGO|S_IXUGO),
+	E(PROC_TGID_FD,        "fd",      S_IFDIR|S_IRUSR|S_IXUSR),
+	E(PROC_TGID_ENVIRON,   "environ", S_IFREG|S_IRUSR),
+	E(PROC_TGID_AUXV,      "auxv",	  S_IFREG|S_IRUSR),
+	E(PROC_TGID_STATUS,    "status",  S_IFREG|S_IRUGO),
+	E(PROC_TGID_CMDLINE,   "cmdline", S_IFREG|S_IRUGO),
+	E(PROC_TGID_STAT,      "stat",    S_IFREG|S_IRUGO),
+	E(PROC_TGID_STATM,     "statm",   S_IFREG|S_IRUGO),
+	E(PROC_TGID_MAPS,      "maps",    S_IFREG|S_IRUGO),
+	E(PROC_TGID_MEM,       "mem",     S_IFREG|S_IRUSR|S_IWUSR),
+#ifdef CONFIG_SECCOMP
+	E(PROC_TGID_SECCOMP,   "seccomp", S_IFREG|S_IRUSR|S_IWUSR),
+#endif
+	E(PROC_TGID_CWD,       "cwd",     S_IFLNK|S_IRWXUGO),
+	E(PROC_TGID_ROOT,      "root",    S_IFLNK|S_IRWXUGO),
+	E(PROC_TGID_EXE,       "exe",     S_IFLNK|S_IRWXUGO),
+	E(PROC_TGID_MOUNTS,    "mounts",  S_IFREG|S_IRUGO),
+#ifdef CONFIG_SECURITY
+	E(PROC_TGID_ATTR,      "attr",    S_IFDIR|S_IRUGO|S_IXUGO),
+#endif
+#ifdef CONFIG_KALLSYMS
+	E(PROC_TGID_WCHAN,     "wchan",   S_IFREG|S_IRUGO),
+#endif
+#ifdef CONFIG_SCHEDSTATS
+	E(PROC_TGID_SCHEDSTAT, "schedstat", S_IFREG|S_IRUGO),
+#endif
+#ifdef CONFIG_CPUSETS
+	E(PROC_TGID_CPUSET,    "cpuset",  S_IFREG|S_IRUGO),
+#endif
+	E(PROC_TGID_OOM_SCORE, "oom_score",S_IFREG|S_IRUGO),
+	E(PROC_TGID_OOM_ADJUST,"oom_adj", S_IFREG|S_IRUGO|S_IWUSR),
+#ifdef CONFIG_AUDITSYSCALL
+	E(PROC_TGID_LOGINUID, "loginuid", S_IFREG|S_IWUSR|S_IRUGO),
+#endif
+	{0,0,NULL,0}
+};
+static struct pid_entry tid_base_stuff[] = {
+	E(PROC_TID_FD,         "fd",      S_IFDIR|S_IRUSR|S_IXUSR),
+	E(PROC_TID_ENVIRON,    "environ", S_IFREG|S_IRUSR),
+	E(PROC_TID_AUXV,       "auxv",	  S_IFREG|S_IRUSR),
+	E(PROC_TID_STATUS,     "status",  S_IFREG|S_IRUGO),
+	E(PROC_TID_CMDLINE,    "cmdline", S_IFREG|S_IRUGO),
+	E(PROC_TID_STAT,       "stat",    S_IFREG|S_IRUGO),
+	E(PROC_TID_STATM,      "statm",   S_IFREG|S_IRUGO),
+	E(PROC_TID_MAPS,       "maps",    S_IFREG|S_IRUGO),
+	E(PROC_TID_MEM,        "mem",     S_IFREG|S_IRUSR|S_IWUSR),
+#ifdef CONFIG_SECCOMP
+	E(PROC_TID_SECCOMP,    "seccomp", S_IFREG|S_IRUSR|S_IWUSR),
+#endif
+	E(PROC_TID_CWD,        "cwd",     S_IFLNK|S_IRWXUGO),
+	E(PROC_TID_ROOT,       "root",    S_IFLNK|S_IRWXUGO),
+	E(PROC_TID_EXE,        "exe",     S_IFLNK|S_IRWXUGO),
+	E(PROC_TID_MOUNTS,     "mounts",  S_IFREG|S_IRUGO),
+#ifdef CONFIG_SECURITY
+	E(PROC_TID_ATTR,       "attr",    S_IFDIR|S_IRUGO|S_IXUGO),
+#endif
+#ifdef CONFIG_KALLSYMS
+	E(PROC_TID_WCHAN,      "wchan",   S_IFREG|S_IRUGO),
+#endif
+#ifdef CONFIG_SCHEDSTATS
+	E(PROC_TID_SCHEDSTAT, "schedstat",S_IFREG|S_IRUGO),
+#endif
+#ifdef CONFIG_CPUSETS
+	E(PROC_TID_CPUSET,     "cpuset",  S_IFREG|S_IRUGO),
+#endif
+	E(PROC_TID_OOM_SCORE,  "oom_score",S_IFREG|S_IRUGO),
+	E(PROC_TID_OOM_ADJUST, "oom_adj", S_IFREG|S_IRUGO|S_IWUSR),
+#ifdef CONFIG_AUDITSYSCALL
+	E(PROC_TID_LOGINUID, "loginuid", S_IFREG|S_IWUSR|S_IRUGO),
+#endif
+	{0,0,NULL,0}
+};
+
+#ifdef CONFIG_SECURITY
+static struct pid_entry tgid_attr_stuff[] = {
+	E(PROC_TGID_ATTR_CURRENT,  "current",  S_IFREG|S_IRUGO|S_IWUGO),
+	E(PROC_TGID_ATTR_PREV,     "prev",     S_IFREG|S_IRUGO),
+	E(PROC_TGID_ATTR_EXEC,     "exec",     S_IFREG|S_IRUGO|S_IWUGO),
+	E(PROC_TGID_ATTR_FSCREATE, "fscreate", S_IFREG|S_IRUGO|S_IWUGO),
+	{0,0,NULL,0}
+};
+static struct pid_entry tid_attr_stuff[] = {
+	E(PROC_TID_ATTR_CURRENT,   "current",  S_IFREG|S_IRUGO|S_IWUGO),
+	E(PROC_TID_ATTR_PREV,      "prev",     S_IFREG|S_IRUGO),
+	E(PROC_TID_ATTR_EXEC,      "exec",     S_IFREG|S_IRUGO|S_IWUGO),
+	E(PROC_TID_ATTR_FSCREATE,  "fscreate", S_IFREG|S_IRUGO|S_IWUGO),
+	{0,0,NULL,0}
+};
+#endif
+
+#undef E
+
+static int proc_fd_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt)
+{
+	struct task_struct *task = proc_task(inode);
+	struct files_struct *files;
+	struct file *file;
+	int fd = proc_type(inode) - PROC_TID_FD_DIR;
+
+	files = get_files_struct(task);
+	if (files) {
+		spin_lock(&files->file_lock);
+		file = fcheck_files(files, fd);
+		if (file) {
+			*mnt = mntget(file->f_vfsmnt);
+			*dentry = dget(file->f_dentry);
+			spin_unlock(&files->file_lock);
+			put_files_struct(files);
+			return 0;
+		}
+		spin_unlock(&files->file_lock);
+		put_files_struct(files);
+	}
+	return -ENOENT;
+}
+
+static int proc_cwd_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt)
+{
+	struct fs_struct *fs;
+	int result = -ENOENT;
+	task_lock(proc_task(inode));
+	fs = proc_task(inode)->fs;
+	if(fs)
+		atomic_inc(&fs->count);
+	task_unlock(proc_task(inode));
+	if (fs) {
+		read_lock(&fs->lock);
+		*mnt = mntget(fs->pwdmnt);
+		*dentry = dget(fs->pwd);
+		read_unlock(&fs->lock);
+		result = 0;
+		put_fs_struct(fs);
+	}
+	return result;
+}
+
+static int proc_root_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt)
+{
+	struct fs_struct *fs;
+	int result = -ENOENT;
+	task_lock(proc_task(inode));
+	fs = proc_task(inode)->fs;
+	if(fs)
+		atomic_inc(&fs->count);
+	task_unlock(proc_task(inode));
+	if (fs) {
+		read_lock(&fs->lock);
+		*mnt = mntget(fs->rootmnt);
+		*dentry = dget(fs->root);
+		read_unlock(&fs->lock);
+		result = 0;
+		put_fs_struct(fs);
+	}
+	return result;
+}
+
+#define MAY_PTRACE(task) \
+	(task == current || \
+	(task->parent == current && \
+	(task->ptrace & PT_PTRACED) && \
+	 (task->state == TASK_STOPPED || task->state == TASK_TRACED) && \
+	 security_ptrace(current,task) == 0))
+
+static int may_ptrace_attach(struct task_struct *task)
+{
+	int retval = 0;
+
+	task_lock(task);
+
+	if (!task->mm)
+		goto out;
+	if (((current->uid != task->euid) ||
+	     (current->uid != task->suid) ||
+	     (current->uid != task->uid) ||
+	     (current->gid != task->egid) ||
+	     (current->gid != task->sgid) ||
+	     (current->gid != task->gid)) && !capable(CAP_SYS_PTRACE))
+		goto out;
+	rmb();
+	if (!task->mm->dumpable && !capable(CAP_SYS_PTRACE))
+		goto out;
+	if (security_ptrace(current, task))
+		goto out;
+
+	retval = 1;
+out:
+	task_unlock(task);
+	return retval;
+}
+
+static int proc_pid_environ(struct task_struct *task, char * buffer)
+{
+	int res = 0;
+	struct mm_struct *mm = get_task_mm(task);
+	if (mm) {
+		unsigned int len = mm->env_end - mm->env_start;
+		if (len > PAGE_SIZE)
+			len = PAGE_SIZE;
+		res = access_process_vm(task, mm->env_start, buffer, len, 0);
+		if (!may_ptrace_attach(task))
+			res = -ESRCH;
+		mmput(mm);
+	}
+	return res;
+}
+
+static int proc_pid_cmdline(struct task_struct *task, char * buffer)
+{
+	int res = 0;
+	unsigned int len;
+	struct mm_struct *mm = get_task_mm(task);
+	if (!mm)
+		goto out;
+	if (!mm->arg_end)
+		goto out_mm;	/* Shh! No looking before we're done */
+
+ 	len = mm->arg_end - mm->arg_start;
+ 
+	if (len > PAGE_SIZE)
+		len = PAGE_SIZE;
+ 
+	res = access_process_vm(task, mm->arg_start, buffer, len, 0);
+
+	// If the nul at the end of args has been overwritten, then
+	// assume application is using setproctitle(3).
+	if (res > 0 && buffer[res-1] != '\0' && len < PAGE_SIZE) {
+		len = strnlen(buffer, res);
+		if (len < res) {
+		    res = len;
+		} else {
+			len = mm->env_end - mm->env_start;
+			if (len > PAGE_SIZE - res)
+				len = PAGE_SIZE - res;
+			res += access_process_vm(task, mm->env_start, buffer+res, len, 0);
+			res = strnlen(buffer, res);
+		}
+	}
+out_mm:
+	mmput(mm);
+out:
+	return res;
+}
+
+static int proc_pid_auxv(struct task_struct *task, char *buffer)
+{
+	int res = 0;
+	struct mm_struct *mm = get_task_mm(task);
+	if (mm) {
+		unsigned int nwords = 0;
+		do
+			nwords += 2;
+		while (mm->saved_auxv[nwords - 2] != 0); /* AT_NULL */
+		res = nwords * sizeof(mm->saved_auxv[0]);
+		if (res > PAGE_SIZE)
+			res = PAGE_SIZE;
+		memcpy(buffer, mm->saved_auxv, res);
+		mmput(mm);
+	}
+	return res;
+}
+
+
+#ifdef CONFIG_KALLSYMS
+/*
+ * Provides a wchan file via kallsyms in a proper one-value-per-file format.
+ * Returns the resolved symbol.  If that fails, simply return the address.
+ */
+static int proc_pid_wchan(struct task_struct *task, char *buffer)
+{
+	char *modname;
+	const char *sym_name;
+	unsigned long wchan, size, offset;
+	char namebuf[KSYM_NAME_LEN+1];
+
+	wchan = get_wchan(task);
+
+	sym_name = kallsyms_lookup(wchan, &size, &offset, &modname, namebuf);
+	if (sym_name)
+		return sprintf(buffer, "%s", sym_name);
+	return sprintf(buffer, "%lu", wchan);
+}
+#endif /* CONFIG_KALLSYMS */
+
+#ifdef CONFIG_SCHEDSTATS
+/*
+ * Provides /proc/PID/schedstat
+ */
+static int proc_pid_schedstat(struct task_struct *task, char *buffer)
+{
+	return sprintf(buffer, "%lu %lu %lu\n",
+			task->sched_info.cpu_time,
+			task->sched_info.run_delay,
+			task->sched_info.pcnt);
+}
+#endif
+
+/* The badness from the OOM killer */
+unsigned long badness(struct task_struct *p, unsigned long uptime);
+static int proc_oom_score(struct task_struct *task, char *buffer)
+{
+	unsigned long points;
+	struct timespec uptime;
+
+	do_posix_clock_monotonic_gettime(&uptime);
+	points = badness(task, uptime.tv_sec);
+	return sprintf(buffer, "%lu\n", points);
+}
+
+/************************************************************************/
+/*                       Here the fs part begins                        */
+/************************************************************************/
+
+/* permission checks */
+
+static int proc_check_root(struct inode *inode)
+{
+	struct dentry *de, *base, *root;
+	struct vfsmount *our_vfsmnt, *vfsmnt, *mnt;
+	int res = 0;
+
+	if (proc_root_link(inode, &root, &vfsmnt)) /* Ewww... */
+		return -ENOENT;
+	read_lock(&current->fs->lock);
+	our_vfsmnt = mntget(current->fs->rootmnt);
+	base = dget(current->fs->root);
+	read_unlock(&current->fs->lock);
+
+	spin_lock(&vfsmount_lock);
+	de = root;
+	mnt = vfsmnt;
+
+	while (vfsmnt != our_vfsmnt) {
+		if (vfsmnt == vfsmnt->mnt_parent)
+			goto out;
+		de = vfsmnt->mnt_mountpoint;
+		vfsmnt = vfsmnt->mnt_parent;
+	}
+
+	if (!is_subdir(de, base))
+		goto out;
+	spin_unlock(&vfsmount_lock);
+
+exit:
+	dput(base);
+	mntput(our_vfsmnt);
+	dput(root);
+	mntput(mnt);
+	return res;
+out:
+	spin_unlock(&vfsmount_lock);
+	res = -EACCES;
+	goto exit;
+}
+
+static int proc_permission(struct inode *inode, int mask, struct nameidata *nd)
+{
+	if (generic_permission(inode, mask, NULL) != 0)
+		return -EACCES;
+	return proc_check_root(inode);
+}
+
+extern struct seq_operations proc_pid_maps_op;
+static int maps_open(struct inode *inode, struct file *file)
+{
+	struct task_struct *task = proc_task(inode);
+	int ret = seq_open(file, &proc_pid_maps_op);
+	if (!ret) {
+		struct seq_file *m = file->private_data;
+		m->private = task;
+	}
+	return ret;
+}
+
+static struct file_operations proc_maps_operations = {
+	.open		= maps_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+extern struct seq_operations mounts_op;
+static int mounts_open(struct inode *inode, struct file *file)
+{
+	struct task_struct *task = proc_task(inode);
+	int ret = seq_open(file, &mounts_op);
+
+	if (!ret) {
+		struct seq_file *m = file->private_data;
+		struct namespace *namespace;
+		task_lock(task);
+		namespace = task->namespace;
+		if (namespace)
+			get_namespace(namespace);
+		task_unlock(task);
+
+		if (namespace)
+			m->private = namespace;
+		else {
+			seq_release(inode, file);
+			ret = -EINVAL;
+		}
+	}
+	return ret;
+}