1 files changed, 26 insertions, 9 deletions

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 808cbdc193d3..3b455371e7ff 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -127,6 +127,25 @@ struct pid_entry {
                 NULL, &proc_single_file_operations,     \
                 { .proc_show = &proc_##OTYPE } )
 
+/*
+ * Count the number of hardlinks for the pid_entry table, excluding the .
+ * and .. links.
+ */
+static unsigned int pid_entry_count_dirs(const struct pid_entry *entries,
+        unsigned int n)
+{
+        unsigned int i;
+        unsigned int count;
+
+        count = 0;
+        for (i = 0; i < n; ++i) {
+                if (S_ISDIR(entries[i].mode))
+                        ++count;
+        }
+
+        return count;
+}
+
 int maps_protect;
 EXPORT_SYMBOL(maps_protect);
 
@@ -2441,7 +2460,7 @@ static const struct pid_entry tgid_base_stuff[] = {
         REG("oom_adj",    S_IRUGO|S_IWUSR, oom_adjust),
 #ifdef CONFIG_AUDITSYSCALL
         REG("loginuid",   S_IWUSR|S_IRUGO, loginuid),
-        REG("sessionid",  S_IRUSR, sessionid),
+        REG("sessionid",  S_IRUGO, sessionid),
 #endif
 #ifdef CONFIG_FAULT_INJECTION
         REG("make-it-fail", S_IRUGO|S_IWUSR, fault_inject),
@@ -2585,10 +2604,9 @@ static struct dentry *proc_pid_instantiate(struct inode *dir,
         inode->i_op = &proc_tgid_base_inode_operations;
         inode->i_fop = &proc_tgid_base_operations;
         inode->i_flags|=S_IMMUTABLE;
-        inode->i_nlink = 5;
-#ifdef CONFIG_SECURITY
-        inode->i_nlink += 1;
-#endif
+
+        inode->i_nlink = 2 + pid_entry_count_dirs(tgid_base_stuff,
+                ARRAY_SIZE(tgid_base_stuff));
 
         dentry->d_op = &pid_dentry_operations;
 
@@ -2816,10 +2834,9 @@ static struct dentry *proc_task_instantiate(struct inode *dir,
         inode->i_op = &proc_tid_base_inode_operations;
         inode->i_fop = &proc_tid_base_operations;
         inode->i_flags|=S_IMMUTABLE;
-        inode->i_nlink = 4;
-#ifdef CONFIG_SECURITY
-        inode->i_nlink += 1;
-#endif
+
+        inode->i_nlink = 2 + pid_entry_count_dirs(tid_base_stuff,
+                ARRAY_SIZE(tid_base_stuff));
 
         dentry->d_op = &pid_dentry_operations;