diff options
| author | William Roberts <bill.c.roberts@gmail.com> | 2014-02-11 19:12:00 +0100 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2014-03-20 15:10:26 +0100 |
| commit | 21a6457a79a02908dc8e60fe820828b2cc72d13a (patch) | |
| tree | e67fb3af63c7aa5a1255e0c2aa770dc605773c93 /fs | |
| parent | mm: Create utility function for accessing a tasks commandline value (diff) | |
| download | linux-21a6457a79a02908dc8e60fe820828b2cc72d13a.tar.xz linux-21a6457a79a02908dc8e60fe820828b2cc72d13a.zip | |
proc: Update get proc_pid_cmdline() to use mm.h helpers
Re-factor proc_pid_cmdline() to use get_cmdline() helper
from mm.h.
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: William Roberts <wroberts@tresys.com>
Acked-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/proc/base.c | 36 |
1 files changed, 2 insertions, 34 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index 03c8d747be48..cfd178dc76b2 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) return result; } -static int proc_pid_cmdline(struct task_struct *task, char * buffer) +static int proc_pid_cmdline(struct task_struct *task, char *buffer) { - int res = 0; - unsigned int len; - struct mm_struct *mm = get_task_mm(task); - if (!mm) - goto out; - if (!mm->arg_end) - goto out_mm; /* Shh! No looking before we're done */ - - len = mm->arg_end - mm->arg_start; - - if (len > PAGE_SIZE) - len = PAGE_SIZE; - - res = access_process_vm(task, mm->arg_start, buffer, len, 0); - - // If the nul at the end of args has been overwritten, then - // assume application is using setproctitle(3). - if (res > 0 && buffer[res-1] != '\0' && len < PAGE_SIZE) { - len = strnlen(buffer, res); - if (len < res) { - res = len; - } else { - len = mm->env_end - mm->env_start; - if (len > PAGE_SIZE - res) - len = PAGE_SIZE - res; - res += access_process_vm(task, mm->env_start, buffer+res, len, 0); - res = strnlen(buffer, res); - } - } -out_mm: - mmput(mm); -out: - return res; + return get_cmdline(task, buffer, PAGE_SIZE); } static int proc_pid_auxv(struct task_struct *task, char *buffer) |