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-rw-r--r--fs/autofs/root.c67
1 files changed, 64 insertions, 3 deletions
diff --git a/fs/autofs/root.c b/fs/autofs/root.c
index 9a0520b50663..11b1ea786d00 100644
--- a/fs/autofs/root.c
+++ b/fs/autofs/root.c
@@ -16,6 +16,7 @@
#include <linux/slab.h>
#include <linux/param.h>
#include <linux/time.h>
+#include <linux/compat.h>
#include <linux/smp_lock.h>
#include "autofs_i.h"
@@ -25,13 +26,17 @@ static int autofs_root_symlink(struct inode *,struct dentry *,const char *);
static int autofs_root_unlink(struct inode *,struct dentry *);
static int autofs_root_rmdir(struct inode *,struct dentry *);
static int autofs_root_mkdir(struct inode *,struct dentry *,int);
-static int autofs_root_ioctl(struct inode *, struct file *,unsigned int,unsigned long);
+static long autofs_root_ioctl(struct file *,unsigned int,unsigned long);
+static long autofs_root_compat_ioctl(struct file *,unsigned int,unsigned long);
const struct file_operations autofs_root_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = autofs_root_readdir,
- .ioctl = autofs_root_ioctl,
+ .unlocked_ioctl = autofs_root_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = autofs_root_compat_ioctl,
+#endif
};
const struct inode_operations autofs_root_inode_operations = {
@@ -492,6 +497,25 @@ static int autofs_root_mkdir(struct inode *dir, struct dentry *dentry, int mode)
}
/* Get/set timeout ioctl() operation */
+#ifdef CONFIG_COMPAT
+static inline int autofs_compat_get_set_timeout(struct autofs_sb_info *sbi,
+ unsigned int __user *p)
+{
+ unsigned long ntimeout;
+
+ if (get_user(ntimeout, p) ||
+ put_user(sbi->exp_timeout / HZ, p))
+ return -EFAULT;
+
+ if (ntimeout > UINT_MAX/HZ)
+ sbi->exp_timeout = 0;
+ else
+ sbi->exp_timeout = ntimeout * HZ;
+
+ return 0;
+}
+#endif
+
static inline int autofs_get_set_timeout(struct autofs_sb_info *sbi,
unsigned long __user *p)
{
@@ -546,7 +570,7 @@ static inline int autofs_expire_run(struct super_block *sb,
* ioctl()'s on the root directory is the chief method for the daemon to
* generate kernel reactions
*/
-static int autofs_root_ioctl(struct inode *inode, struct file *filp,
+static int autofs_do_root_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
struct autofs_sb_info *sbi = autofs_sbi(inode->i_sb);
@@ -571,6 +595,10 @@ static int autofs_root_ioctl(struct inode *inode, struct file *filp,
return 0;
case AUTOFS_IOC_PROTOVER: /* Get protocol version */
return autofs_get_protover(argp);
+#ifdef CONFIG_COMPAT
+ case AUTOFS_IOC_SETTIMEOUT32:
+ return autofs_compat_get_set_timeout(sbi, argp);
+#endif
case AUTOFS_IOC_SETTIMEOUT:
return autofs_get_set_timeout(sbi, argp);
case AUTOFS_IOC_EXPIRE:
@@ -579,4 +607,37 @@ static int autofs_root_ioctl(struct inode *inode, struct file *filp,
default:
return -ENOSYS;
}
+
+}
+
+static long autofs_root_ioctl(struct file *filp,
+ unsigned int cmd, unsigned long arg)
+{
+ int ret;
+
+ lock_kernel();
+ ret = autofs_do_root_ioctl(filp->f_path.dentry->d_inode,
+ filp, cmd, arg);
+ unlock_kernel();
+
+ return ret;
+}
+
+#ifdef CONFIG_COMPAT
+static long autofs_root_compat_ioctl(struct file *filp,
+ unsigned int cmd, unsigned long arg)
+{
+ struct inode *inode = filp->f_path.dentry->d_inode;
+ int ret;
+
+ lock_kernel();
+ if (cmd == AUTOFS_IOC_READY || cmd == AUTOFS_IOC_FAIL)
+ ret = autofs_do_root_ioctl(inode, filp, cmd, arg);
+ else
+ ret = autofs_do_root_ioctl(inode, filp, cmd,
+ (unsigned long)compat_ptr(arg));
+ unlock_kernel();
+
+ return ret;
}
+#endif