evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

proc: convert /proc/$PID/cmdline to seq_file interface

Browse source 
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>
This commit is contained in:
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
Show stats Download patch file Download diff file Expand all files Collapse all files

15
fs/proc/base.c
View file

@ -200,9 +200,16 @@ static int proc_root_link(struct dentry *dentry, struct path *path)
return result; 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, 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 #ifdef CONFIG_HAVE_ARCH_TRACEHOOK
ONE("syscall", S_IRUSR, proc_pid_syscall), ONE("syscall", S_IRUSR, proc_pid_syscall),
#endif #endif
INF("cmdline", S_IRUGO, proc_pid_cmdline), ONE("cmdline", S_IRUGO, proc_pid_cmdline),
ONE("stat", S_IRUGO, proc_tgid_stat), ONE("stat", S_IRUGO, proc_tgid_stat),
ONE("statm", S_IRUGO, proc_pid_statm), ONE("statm", S_IRUGO, proc_pid_statm),
REG("maps", S_IRUGO, proc_pid_maps_operations), 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 #ifdef CONFIG_HAVE_ARCH_TRACEHOOK
ONE("syscall", S_IRUSR, proc_pid_syscall), ONE("syscall", S_IRUSR, proc_pid_syscall),
#endif #endif
INF("cmdline", S_IRUGO, proc_pid_cmdline), ONE("cmdline", S_IRUGO, proc_pid_cmdline),
ONE("stat", S_IRUGO, proc_tid_stat), ONE("stat", S_IRUGO, proc_tid_stat),
ONE("statm", S_IRUGO, proc_pid_statm), ONE("statm", S_IRUGO, proc_pid_statm),
REG("maps", S_IRUGO, proc_tid_maps_operations), REG("maps", S_IRUGO, proc_tid_maps_operations),