Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=478307...
Commit: 478307230810d7e2a753ed220db9066dfdf88718
Parent: a6bebbc87a8c16eabb6bd5c6fd2d994be0236fba
Author: Kees Cook <kees.cook@canonical.com>
AuthorDate: Mon Oct 6 03:11:58 2008 +0400
Committer: Alexey Dobriyan <adobriyan@gmail.com>
CommitDate: Fri Oct 10 04:18:57 2008 +0400
[PATCH] proc: show personality via /proc/pid/personality
Make process personality flags visible in /proc. Since a process's
personality is potentially sensitive (e.g. READ_IMPLIES_EXEC), make this
file only readable by the process owner.
Signed-off-by: Kees Cook <kees.cook@canonical.com>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
fs/proc/base.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/fs/proc/base.c b/fs/proc/base.c
index bb63fa1..c1332dd 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2438,6 +2438,13 @@ static int proc_tgid_io_accounting(struct task_struct *task, char *buffer)
}
#endif /* CONFIG_TASK_IO_ACCOUNTING */
+static int proc_pid_personality(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task)
+{
+ seq_printf(m, "%08x\n", task->personality);
+ return 0;
+}
+
/*
* Thread groups
*/
@@ -2454,6 +2461,7 @@ static const struct pid_entry tgid_base_stuff[] = {
REG("environ", S_IRUSR, environ),
INF("auxv", S_IRUSR, pid_auxv),
ONE("status", S_IRUGO, pid_status),
+ ONE("personality", S_IRUSR, pid_personality),
INF("limits", S_IRUSR, pid_limits),
#ifdef CONFIG_SCHED_DEBUG
REG("sched", S_IRUGO|S_IWUSR, pid_sched),
@@ -2789,6 +2797,7 @@ static const struct pid_entry tid_base_stuff[] = {
REG("environ", S_IRUSR, environ),
INF("auxv", S_IRUSR, pid_auxv),
ONE("status", S_IRUGO, pid_status),
+ ONE("personality", S_IRUSR, pid_personality),
INF("limits", S_IRUSR, pid_limits),
#ifdef CONFIG_SCHED_DEBUG
REG("sched", S_IRUGO|S_IWUSR, pid_sched),
--
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