[patch 6/7] vfs: mountinfo: add /proc/<pid>/mountinfo

[mirror_ubuntu-zesty-kernel.git] / fs / proc / base.c

diff --git a/fs/proc/base.c b/fs/proc/base.c
index a04b3db7a296f8017913adbbbada28569241e587..c5e412a00b170e5294964505726b85f6cff93309 100644 (file)
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -604,6 +604,19 @@ static const struct file_operations proc_mounts_operations = {
        .poll           = mounts_poll,
 };
 
+static int mountinfo_open(struct inode *inode, struct file *file)
+{
+       return mounts_open_common(inode, file, &mountinfo_op);
+}
+
+static const struct file_operations proc_mountinfo_operations = {
+       .open           = mountinfo_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = mounts_release,
+       .poll           = mounts_poll,
+};
+
 static int mountstats_open(struct inode *inode, struct file *file)
 {
        return mounts_open_common(inode, file, &mountstats_op);
@@ -2303,6 +2316,7 @@ static const struct pid_entry tgid_base_stuff[] = {
        LNK("root",       root),
        LNK("exe",        exe),
        REG("mounts",     S_IRUGO, mounts),
+       REG("mountinfo",  S_IRUGO, mountinfo),
        REG("mountstats", S_IRUSR, mountstats),
 #ifdef CONFIG_PROC_PAGE_MONITOR
        REG("clear_refs", S_IWUSR, clear_refs),
@@ -2635,6 +2649,7 @@ static const struct pid_entry tid_base_stuff[] = {
        LNK("root",      root),
        LNK("exe",       exe),
        REG("mounts",    S_IRUGO, mounts),
+       REG("mountinfo",  S_IRUGO, mountinfo),
 #ifdef CONFIG_PROC_PAGE_MONITOR
        REG("clear_refs", S_IWUSR, clear_refs),
        REG("smaps",     S_IRUGO, smaps),