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authorCyrill Gorcunov <gorcunov@openvz.org>2012-01-13 05:20:53 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-13 08:13:13 +0400
commitb3f7f573a20081910e34e99cbc91831f4f02f1ff (patch)
tree2c0aea64b3be4c24f84be6a5275f7202e0dde594 /fs/proc/array.c
parent067bce1a06c1f84146f873a598cd7c3a28eee1d5 (diff)
downloadlinux-b3f7f573a20081910e34e99cbc91831f4f02f1ff.tar.xz
c/r: procfs: add start_data, end_data, start_brk members to /proc/$pid/stat v4
The mm->start_code/end_code, mm->start_data/end_data, mm->start_brk are involved into calculation of program text/data segment sizes (which might be seen in /proc/<pid>/statm) and into brk() call final address. For restore we need to know all these values. While mm->start_code/end_code already present in /proc/$pid/stat, the rest members are not, so this patch brings them in. The restore procedure of these members is addressed in another patch using prctl(). Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Tejun Heo <tj@kernel.org> Cc: Andrew Vagin <avagin@openvz.org> Cc: Vasiliy Kulikov <segoon@openwall.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc/array.c')
-rw-r--r--fs/proc/array.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 8c344f037bd0..9252ee3b71e3 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -464,7 +464,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
seq_printf(m, "%d (%s) %c %d %d %d %d %d %u %lu \
%lu %lu %lu %lu %lu %ld %ld %ld %ld %d 0 %llu %lu %ld %lu %lu %lu %lu %lu \
-%lu %lu %lu %lu %lu %lu %lu %lu %d %d %u %u %llu %lu %ld\n",
+%lu %lu %lu %lu %lu %lu %lu %lu %d %d %u %u %llu %lu %ld %lu %lu %lu\n",
pid_nr_ns(pid, ns),
tcomm,
state,
@@ -511,7 +511,10 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
task->policy,
(unsigned long long)delayacct_blkio_ticks(task),
cputime_to_clock_t(gtime),
- cputime_to_clock_t(cgtime));
+ cputime_to_clock_t(cgtime),
+ (mm && permitted) ? mm->start_data : 0,
+ (mm && permitted) ? mm->end_data : 0,
+ (mm && permitted) ? mm->start_brk : 0);
if (mm)
mmput(mm);
return 0;