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Subject[PATCH] Add rlimits to /proc/<PID>/status
Signed-off-by: Clifford Wolf <clifford@clifford.at>
---
fs/proc/array.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 57 insertions(+), 0 deletions(-)

diff --git a/fs/proc/array.c b/fs/proc/array.c
index 9e3b8c3..3cb2ad3 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -242,6 +242,62 @@ static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign,
}
}

+static const char *rlim_names[RLIM_NLIMITS] = {
+ [RLIMIT_CPU] = "CPU",
+ [RLIMIT_FSIZE] = "FSize",
+ [RLIMIT_DATA] = "Data",
+ [RLIMIT_STACK] = "Stack",
+ [RLIMIT_CORE] = "Core",
+ [RLIMIT_RSS] = "RSS",
+ [RLIMIT_NPROC] = "NProc",
+ [RLIMIT_NOFILE] = "NoFile",
+ [RLIMIT_MEMLOCK] = "MemLock",
+ [RLIMIT_AS] = "AddrSpace",
+ [RLIMIT_LOCKS] = "Locks",
+ [RLIMIT_SIGPENDING] = "SigPending",
+ [RLIMIT_MSGQUEUE] = "MsgQueue",
+ [RLIMIT_NICE] = "Nice",
+ [RLIMIT_RTPRIO] = "RTPrio",
+ [RLIMIT_RTTIME] = "RTTime"
+};
+
+#if RLIM_NLIMITS != 16
+# error Value of RLIM_NLIMITS changed. \
+ Please update rlim_names in fs/proc/array.c
+#endif
+
+static inline void task_rlim(struct seq_file *m, struct task_struct *p)
+{
+ unsigned long flags;
+ struct rlimit rlim[RLIM_NLIMITS];
+ int i;
+
+ for (i=0; i<RLIM_NLIMITS; i++) {
+ rlim[i].rlim_cur = 0;
+ rlim[i].rlim_max = 0;
+ }
+
+ rcu_read_lock();
+ if (lock_task_sighand(p, &flags)) {
+ for (i=0; i<RLIM_NLIMITS; i++)
+ rlim[i] = p->signal->rlim[i];
+ unlock_task_sighand(p, &flags);
+ }
+ rcu_read_unlock();
+
+ for (i=0; i<RLIM_NLIMITS; i++) {
+ seq_printf(m, "Rlim%s:\t", rlim_names[i]);
+ if (rlim[i].rlim_cur != RLIM_INFINITY)
+ seq_printf(m, "%lu\t", rlim[i].rlim_cur);
+ else
+ seq_printf(m, "inf\t");
+ if (rlim[i].rlim_max != RLIM_INFINITY)
+ seq_printf(m, "%lu\n", rlim[i].rlim_max);
+ else
+ seq_printf(m, "inf\n");
+ }
+}
+
static inline void task_sig(struct seq_file *m, struct task_struct *p)
{
unsigned long flags;
@@ -322,6 +378,7 @@ int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
task_mem(m, mm);
mmput(mm);
}
+ task_rlim(m, task);
task_sig(m, task);
task_cap(m, task);
cpuset_task_status_allowed(m, task);
--
1.5.5.3


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