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-rw-r--r--fs/proc/base.c32
1 files changed, 22 insertions, 10 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 57554bfbed79..e31903aadd96 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1419,6 +1419,8 @@ static struct file_operations proc_tgid_attr_operations;
static struct inode_operations proc_tgid_attr_inode_operations;
#endif
+static int get_tid_list(int index, unsigned int *tids, struct inode *dir);
+
/* SMP-safe */
static struct dentry *proc_pident_lookup(struct inode *dir,
struct dentry *dentry,
@@ -1458,7 +1460,7 @@ static struct dentry *proc_pident_lookup(struct inode *dir,
*/
switch(p->type) {
case PROC_TGID_TASK:
- inode->i_nlink = 3;
+ inode->i_nlink = 2 + get_tid_list(2, NULL, dir);
inode->i_op = &proc_task_inode_operations;
inode->i_fop = &proc_task_operations;
break;
@@ -1701,13 +1703,13 @@ static struct inode_operations proc_self_inode_operations = {
};
/**
- * proc_pid_unhash - Unhash /proc/<pid> entry from the dcache.
+ * proc_pid_unhash - Unhash /proc/@pid entry from the dcache.
* @p: task that should be flushed.
*
- * Drops the /proc/<pid> dcache entry from the hash chains.
+ * Drops the /proc/@pid dcache entry from the hash chains.
*
- * Dropping /proc/<pid> entries and detach_pid must be synchroneous,
- * otherwise e.g. /proc/<pid>/exe might point to the wrong executable,
+ * Dropping /proc/@pid entries and detach_pid must be synchroneous,
+ * otherwise e.g. /proc/@pid/exe might point to the wrong executable,
* if the pid value is immediately reused. This is enforced by
* - caller must acquire spin_lock(p->proc_lock)
* - must be called before detach_pid()
@@ -1739,8 +1741,8 @@ struct dentry *proc_pid_unhash(struct task_struct *p)
}
/**
- * proc_pid_flush - recover memory used by stale /proc/<pid>/x entries
- * @proc_entry: directoy to prune.
+ * proc_pid_flush - recover memory used by stale /proc/@pid/x entries
+ * @proc_dentry: directoy to prune.
*
* Shrink the /proc directory that was used by the just killed thread.
*/
@@ -1800,8 +1802,12 @@ struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct
inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO;
inode->i_op = &proc_tgid_base_inode_operations;
inode->i_fop = &proc_tgid_base_operations;
- inode->i_nlink = 3;
inode->i_flags|=S_IMMUTABLE;
+#ifdef CONFIG_SECURITY
+ inode->i_nlink = 5;
+#else
+ inode->i_nlink = 4;
+#endif
dentry->d_op = &pid_base_dentry_operations;
@@ -1855,8 +1861,12 @@ static struct dentry *proc_task_lookup(struct inode *dir, struct dentry * dentry
inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO;
inode->i_op = &proc_tid_base_inode_operations;
inode->i_fop = &proc_tid_base_operations;
- inode->i_nlink = 3;
inode->i_flags|=S_IMMUTABLE;
+#ifdef CONFIG_SECURITY
+ inode->i_nlink = 4;
+#else
+ inode->i_nlink = 3;
+#endif
dentry->d_op = &pid_base_dentry_operations;
@@ -1935,7 +1945,8 @@ static int get_tid_list(int index, unsigned int *tids, struct inode *dir)
if (--index >= 0)
continue;
- tids[nr_tids] = tid;
+ if (tids != NULL)
+ tids[nr_tids] = tid;
nr_tids++;
if (nr_tids >= PROC_MAXPIDS)
break;
@@ -2035,6 +2046,7 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi
}
nr_tids = get_tid_list(pos, tid_array, inode);
+ inode->i_nlink = pos + nr_tids;
for (i = 0; i < nr_tids; i++) {
unsigned long j = PROC_NUMBUF;