proc: convert /proc/$PID/cmdline to seq_file interface
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -200,9 +200,16 @@ static int proc_root_link(struct dentry *dentry, struct path *path)
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return result;
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}
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static int proc_pid_cmdline(struct task_struct *task, char *buffer)
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static int proc_pid_cmdline(struct seq_file *m, struct pid_namespace *ns,
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struct pid *pid, struct task_struct *task)
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{
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return get_cmdline(task, buffer, PAGE_SIZE);
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/*
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* Rely on struct seq_operations::show() being called once
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* per internal buffer allocation. See single_open(), traverse().
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*/
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BUG_ON(m->size < PAGE_SIZE);
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m->count += get_cmdline(task, m->buf, PAGE_SIZE);
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return 0;
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}
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static int proc_pid_auxv(struct seq_file *m, struct pid_namespace *ns,
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@ -2567,7 +2574,7 @@ static const struct pid_entry tgid_base_stuff[] = {
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#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
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ONE("syscall", S_IRUSR, proc_pid_syscall),
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#endif
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INF("cmdline", S_IRUGO, proc_pid_cmdline),
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ONE("cmdline", S_IRUGO, proc_pid_cmdline),
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ONE("stat", S_IRUGO, proc_tgid_stat),
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ONE("statm", S_IRUGO, proc_pid_statm),
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REG("maps", S_IRUGO, proc_pid_maps_operations),
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@ -2903,7 +2910,7 @@ static const struct pid_entry tid_base_stuff[] = {
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#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
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ONE("syscall", S_IRUSR, proc_pid_syscall),
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#endif
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INF("cmdline", S_IRUGO, proc_pid_cmdline),
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ONE("cmdline", S_IRUGO, proc_pid_cmdline),
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ONE("stat", S_IRUGO, proc_tid_stat),
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ONE("statm", S_IRUGO, proc_pid_statm),
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REG("maps", S_IRUGO, proc_tid_maps_operations),
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