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-rw-r--r--fs/proc/base.c33
1 files changed, 25 insertions, 8 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index c447e0743a3c..3b455371e7ff 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -127,6 +127,25 @@ struct pid_entry {
127 NULL, &proc_single_file_operations, \ 127 NULL, &proc_single_file_operations, \
128 { .proc_show = &proc_##OTYPE } ) 128 { .proc_show = &proc_##OTYPE } )
129 129
130/*
131 * Count the number of hardlinks for the pid_entry table, excluding the .
132 * and .. links.
133 */
134static unsigned int pid_entry_count_dirs(const struct pid_entry *entries,
135 unsigned int n)
136{
137 unsigned int i;
138 unsigned int count;
139
140 count = 0;
141 for (i = 0; i < n; ++i) {
142 if (S_ISDIR(entries[i].mode))
143 ++count;
144 }
145
146 return count;
147}
148
130int maps_protect; 149int maps_protect;
131EXPORT_SYMBOL(maps_protect); 150EXPORT_SYMBOL(maps_protect);
132 151
@@ -2585,10 +2604,9 @@ static struct dentry *proc_pid_instantiate(struct inode *dir,
2585 inode->i_op = &proc_tgid_base_inode_operations; 2604 inode->i_op = &proc_tgid_base_inode_operations;
2586 inode->i_fop = &proc_tgid_base_operations; 2605 inode->i_fop = &proc_tgid_base_operations;
2587 inode->i_flags|=S_IMMUTABLE; 2606 inode->i_flags|=S_IMMUTABLE;
2588 inode->i_nlink = 5; 2607
2589#ifdef CONFIG_SECURITY 2608 inode->i_nlink = 2 + pid_entry_count_dirs(tgid_base_stuff,
2590 inode->i_nlink += 1; 2609 ARRAY_SIZE(tgid_base_stuff));
2591#endif
2592 2610
2593 dentry->d_op = &pid_dentry_operations; 2611 dentry->d_op = &pid_dentry_operations;
2594 2612
@@ -2816,10 +2834,9 @@ static struct dentry *proc_task_instantiate(struct inode *dir,
2816 inode->i_op = &proc_tid_base_inode_operations; 2834 inode->i_op = &proc_tid_base_inode_operations;
2817 inode->i_fop = &proc_tid_base_operations; 2835 inode->i_fop = &proc_tid_base_operations;
2818 inode->i_flags|=S_IMMUTABLE; 2836 inode->i_flags|=S_IMMUTABLE;
2819 inode->i_nlink = 4; 2837
2820#ifdef CONFIG_SECURITY 2838 inode->i_nlink = 2 + pid_entry_count_dirs(tid_base_stuff,
2821 inode->i_nlink += 1; 2839 ARRAY_SIZE(tid_base_stuff));
2822#endif
2823 2840
2824 dentry->d_op = &pid_dentry_operations; 2841 dentry->d_op = &pid_dentry_operations;
2825 2842