pioctl.c (e6305c43eda10ebfd2ad9e35d6e172ccc7bb3695) pioctl.c (2d8f30380ab8c706f4e0a8f1aaa22b5886e9ac8a)
1/*
2 * Pioctl operations for Coda.
3 * Original version: (C) 1996 Peter Braam
4 * Rewritten for Linux 2.1: (C) 1997 Carnegie Mellon University
5 *
6 * Carnegie Mellon encourages users of this code to contribute improvements
7 * to the Coda project. Contact Peter Braam <coda@cs.cmu.edu>.
8 */

--- 35 unchanged lines hidden (view full) ---

44static int coda_ioctl_permission(struct inode *inode, int mask)
45{
46 return 0;
47}
48
49static int coda_pioctl(struct inode * inode, struct file * filp,
50 unsigned int cmd, unsigned long user_data)
51{
1/*
2 * Pioctl operations for Coda.
3 * Original version: (C) 1996 Peter Braam
4 * Rewritten for Linux 2.1: (C) 1997 Carnegie Mellon University
5 *
6 * Carnegie Mellon encourages users of this code to contribute improvements
7 * to the Coda project. Contact Peter Braam <coda@cs.cmu.edu>.
8 */

--- 35 unchanged lines hidden (view full) ---

44static int coda_ioctl_permission(struct inode *inode, int mask)
45{
46 return 0;
47}
48
49static int coda_pioctl(struct inode * inode, struct file * filp,
50 unsigned int cmd, unsigned long user_data)
51{
52 struct nameidata nd;
52 struct path path;
53 int error;
54 struct PioctlData data;
55 struct inode *target_inode = NULL;
56 struct coda_inode_info *cnp;
57
58 /* get the Pioctl data arguments from user space */
59 if (copy_from_user(&data, (void __user *)user_data, sizeof(data))) {
60 return -EINVAL;
61 }
62
63 /*
64 * Look up the pathname. Note that the pathname is in
65 * user memory, and namei takes care of this
66 */
53 int error;
54 struct PioctlData data;
55 struct inode *target_inode = NULL;
56 struct coda_inode_info *cnp;
57
58 /* get the Pioctl data arguments from user space */
59 if (copy_from_user(&data, (void __user *)user_data, sizeof(data))) {
60 return -EINVAL;
61 }
62
63 /*
64 * Look up the pathname. Note that the pathname is in
65 * user memory, and namei takes care of this
66 */
67 if ( data.follow ) {
68 error = user_path_walk(data.path, &nd);
67 if (data.follow) {
68 error = user_path(data.path, &path);
69 } else {
69 } else {
70 error = user_path_walk_link(data.path, &nd);
70 error = user_lpath(data.path, &path);
71 }
72
73 if ( error ) {
74 return error;
75 } else {
71 }
72
73 if ( error ) {
74 return error;
75 } else {
76 target_inode = nd.path.dentry->d_inode;
76 target_inode = path.dentry->d_inode;
77 }
78
79 /* return if it is not a Coda inode */
80 if ( target_inode->i_sb != inode->i_sb ) {
77 }
78
79 /* return if it is not a Coda inode */
80 if ( target_inode->i_sb != inode->i_sb ) {
81 path_put(&nd.path);
81 path_put(&path);
82 return -EINVAL;
83 }
84
85 /* now proceed to make the upcall */
86 cnp = ITOC(target_inode);
87
88 error = venus_pioctl(inode->i_sb, &(cnp->c_fid), cmd, &data);
89
82 return -EINVAL;
83 }
84
85 /* now proceed to make the upcall */
86 cnp = ITOC(target_inode);
87
88 error = venus_pioctl(inode->i_sb, &(cnp->c_fid), cmd, &data);
89
90 path_put(&nd.path);
90 path_put(&path);
91 return error;
92}
93
91 return error;
92}
93