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| author | Kees Cook <kees.cook@canonical.com> | 2008-10-06 03:11:58 +0400 |
|---|---|---|
| committer | Alexey Dobriyan <adobriyan@gmail.com> | 2008-10-10 04:18:57 +0400 |
| commit | 478307230810d7e2a753ed220db9066dfdf88718 (patch) | |
| tree | 7cb8bfebc5a0a7c043bdfda5675ddb526da1af34 | |
| parent | a6bebbc87a8c16eabb6bd5c6fd2d994be0236fba (diff) | |
| download | linux-478307230810d7e2a753ed220db9066dfdf88718.tar.gz | |
[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>
| -rw-r--r-- | 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 bb63fa1d34a2..c1332dd2575d 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), |