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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>
wifi-calibration
Alexey Dobriyan 2014-08-08 14:21:41 -07:00 committed by Linus Torvalds
parent 09d93bd627
commit 2ca66ff70a
1 changed files with 11 additions and 4 deletions
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15
fs/proc/base.c
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@ -200,9 +200,16 @@ static int proc_root_link(struct dentry *dentry, struct path *path)
return result;
}
static int proc_pid_cmdline(struct task_struct *task, char *buffer)
static int proc_pid_cmdline(struct seq_file *m, struct pid_namespace *ns,
struct pid *pid, struct task_struct *task)
{
return get_cmdline(task, buffer, PAGE_SIZE);
/*
* Rely on struct seq_operations::show() being called once
* per internal buffer allocation. See single_open(), traverse().
*/
BUG_ON(m->size < PAGE_SIZE);
m->count += get_cmdline(task, m->buf, PAGE_SIZE);
return 0;
}
static int proc_pid_auxv(struct seq_file *m, struct pid_namespace *ns,
@ -2567,7 +2574,7 @@ static const struct pid_entry tgid_base_stuff[] = {
#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
ONE("syscall", S_IRUSR, proc_pid_syscall),
#endif
INF("cmdline", S_IRUGO, proc_pid_cmdline),
ONE("cmdline", S_IRUGO, proc_pid_cmdline),
ONE("stat", S_IRUGO, proc_tgid_stat),
ONE("statm", S_IRUGO, proc_pid_statm),
REG("maps", S_IRUGO, proc_pid_maps_operations),
@ -2903,7 +2910,7 @@ static const struct pid_entry tid_base_stuff[] = {
#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
ONE("syscall", S_IRUSR, proc_pid_syscall),
#endif
INF("cmdline", S_IRUGO, proc_pid_cmdline),
ONE("cmdline", S_IRUGO, proc_pid_cmdline),
ONE("stat", S_IRUGO, proc_tid_stat),
ONE("statm", S_IRUGO, proc_pid_statm),
REG("maps", S_IRUGO, proc_tid_maps_operations),