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-rw-r--r--fs/proc/base.c36
1 files changed, 2 insertions, 34 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 6b7087e2e8fb..2d696b0c93bf 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -200,41 +200,9 @@ static int proc_root_link(struct dentry *dentry, struct path *path)
200 return result; 200 return result;
201} 201}
202 202
203static int proc_pid_cmdline(struct task_struct *task, char * buffer) 203static int proc_pid_cmdline(struct task_struct *task, char *buffer)
204{ 204{
205 int res = 0; 205 return get_cmdline(task, buffer, PAGE_SIZE);
206 unsigned int len;
207 struct mm_struct *mm = get_task_mm(task);
208 if (!mm)
209 goto out;
210 if (!mm->arg_end)
211 goto out_mm; /* Shh! No looking before we're done */
212
213 len = mm->arg_end - mm->arg_start;
214
215 if (len > PAGE_SIZE)
216 len = PAGE_SIZE;
217
218 res = access_process_vm(task, mm->arg_start, buffer, len, 0);
219
220 // If the nul at the end of args has been overwritten, then
221 // assume application is using setproctitle(3).
222 if (res > 0 && buffer[res-1] != '\0' && len < PAGE_SIZE) {
223 len = strnlen(buffer, res);
224 if (len < res) {
225 res = len;
226 } else {
227 len = mm->env_end - mm->env_start;
228 if (len > PAGE_SIZE - res)
229 len = PAGE_SIZE - res;
230 res += access_process_vm(task, mm->env_start, buffer+res, len, 0);
231 res = strnlen(buffer, res);
232 }
233 }
234out_mm:
235 mmput(mm);
236out:
237 return res;
238} 206}
239 207
240static int proc_pid_auxv(struct task_struct *task, char *buffer) 208static int proc_pid_auxv(struct task_struct *task, char *buffer)