Linux-2.6.12-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!
diff --git a/fs/proc/array.c b/fs/proc/array.c
new file mode 100644
index 0000000..37668fe
--- /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);
+}