Add --stat-mode to override the perms for [pid]/stat

* main.c (argp_parser, main): Add the --stat-mode option.
* process.c (process_lookup_pid): Use it.

1 files changed, 5 insertions, 0 deletions

diff --git a/process.c b/process.c
index 65f0e503..f7a7a577 100644
--- a/process.c
+++ b/process.c
@@ -206,6 +206,7 @@ static struct procfs_dir_entry entries[] = {
     },
   },
   {
+    /* Beware of the hack below, which requires this to be entries[2].  */
     .name = "stat",
     .make_node = process_file_make_node,
     .hook = & (struct process_file_desc) {
@@ -235,6 +236,10 @@ process_lookup_pid (struct ps_context *pc, pid_t pid, struct node **np)
   if (err || ! (proc_stat_flags (ps) & PSTAT_OWNER_UID))
     return EIO;
 
+  /* FIXME: have a separate proc_desc structure for each file, so this can be
+     accessed in a more robust and straightforward way. */
+  ((struct process_file_desc *) entries[2].hook)->mode = opt_stat_mode;
+
   *np = procfs_dir_make_node (entries, ps, (void (*)(void *)) _proc_stat_free);
   if (! *np)
     return ENOMEM;