Quoting Clifford Wolf ([EMAIL PROTECTED]):
> Hi,
>
> because I needed it already twice in two different projects this week: the
> following patch adds rlim (ulimits) output to /proc/<pid>/status.
>
> Please let me know if there is another (already existing) way of accessing
> this information easy (i.e. connecting with gdb to the process in question
> and 'injecting' a getrlimit() call does not count.. ;-).
>
> yours,
> - clifford
>
> Signed-off-by: Clifford Wolf <[EMAIL PROTECTED]>
>
> --- linux/fs/proc/array.c (revision 757)
> +++ linux/fs/proc/array.c (working copy)
> @@ -239,6 +239,55 @@
> }
> }
>
> +static 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"
> +};
> +
> +static inline char *task_rlim(struct task_struct *p, char *buffer)
> +{
> + unsigned long flags;
> + struct rlimit rlim[RLIM_NLIMITS];
> + int i;
> +
> + rcu_read_lock();
> + if (lock_task_sighand(p, &flags)) {
> + for (i=0; i<RLIM_NLIMITS; i++)
> + rlim[i] = p->signal->rlim[i];
I'm confused - where do you unlock_task_sighand()?
> + }
> + rcu_read_unlock();
> +
> + for (i=0; i<RLIM_NLIMITS; i++) {
> + if (rlim_names[i])
> + buffer += sprintf(buffer, "Rlim%s:\t", rlim_names[i]);
> + else
> + buffer += sprintf(buffer, "Rlim%d:\t", i);
> + if (rlim[i].rlim_cur != ~0)
> + buffer += sprintf(buffer, "%lu\t", rlim[i].rlim_cur);
> + else
> + buffer += sprintf(buffer, "-\t");
> + if (rlim[i].rlim_max != ~0)
> + buffer += sprintf(buffer, "%lu\n", rlim[i].rlim_max);
> + else
> + buffer += sprintf(buffer, "-\n");
> + }
> +
> + return buffer;
> +}
> +
> static inline char *task_sig(struct task_struct *p, char *buffer)
> {
> unsigned long flags;
> @@ -310,6 +359,7 @@
> buffer = task_mem(mm, buffer);
> mmput(mm);
> }
> + buffer = task_rlim(task, buffer);
> buffer = task_sig(task, buffer);
> buffer = task_cap(task, buffer);
> buffer = cpuset_task_status_allowed(task, buffer);
>
> --
> [..] If it still doesn't work, re-write it in assembler. This won't fix the
> bug, but it will make sure no one else finds it and makes you look bad.
> --
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