Skip to content

Commit

Permalink
---
Browse files Browse the repository at this point in the history
yaml
---
r: 175016
b: refs/heads/master
c: d3a3b0a
h: refs/heads/master
v: v3
  • Loading branch information
Mathieu Desnoyers authored and Greg Kroah-Hartman committed Dec 11, 2009
1 parent abf74d0 commit 8ac110f
Show file tree
Hide file tree
Showing 2 changed files with 33 additions and 24 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 18ef545e47c126abd87c013b762b5fbb574858ce
refs/heads/master: d3a3b0adad0865c12e39b712ca89efbd0a3a0dbc
55 changes: 32 additions & 23 deletions trunk/fs/debugfs/inode.c
Original file line number Diff line number Diff line change
Expand Up @@ -32,7 +32,9 @@ static struct vfsmount *debugfs_mount;
static int debugfs_mount_count;
static bool debugfs_registered;

static struct inode *debugfs_get_inode(struct super_block *sb, int mode, dev_t dev)
static struct inode *debugfs_get_inode(struct super_block *sb, int mode, dev_t dev,
void *data, const struct file_operations *fops)

{
struct inode *inode = new_inode(sb);

Expand All @@ -44,14 +46,18 @@ static struct inode *debugfs_get_inode(struct super_block *sb, int mode, dev_t d
init_special_inode(inode, mode, dev);
break;
case S_IFREG:
inode->i_fop = &debugfs_file_operations;
inode->i_fop = fops ? fops : &debugfs_file_operations;
inode->i_private = data;
break;
case S_IFLNK:
inode->i_op = &debugfs_link_operations;
inode->i_fop = fops;
inode->i_private = data;
break;
case S_IFDIR:
inode->i_op = &simple_dir_inode_operations;
inode->i_fop = &simple_dir_operations;
inode->i_fop = fops ? fops : &simple_dir_operations;
inode->i_private = data;

/* directory inodes start off with i_nlink == 2
* (for "." entry) */
Expand All @@ -64,15 +70,16 @@ static struct inode *debugfs_get_inode(struct super_block *sb, int mode, dev_t d

/* SMP-safe */
static int debugfs_mknod(struct inode *dir, struct dentry *dentry,
int mode, dev_t dev)
int mode, dev_t dev, void *data,
const struct file_operations *fops)
{
struct inode *inode;
int error = -EPERM;

if (dentry->d_inode)
return -EEXIST;

inode = debugfs_get_inode(dir->i_sb, mode, dev);
inode = debugfs_get_inode(dir->i_sb, mode, dev, data, fops);
if (inode) {
d_instantiate(dentry, inode);
dget(dentry);
Expand All @@ -81,31 +88,34 @@ static int debugfs_mknod(struct inode *dir, struct dentry *dentry,
return error;
}

static int debugfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
static int debugfs_mkdir(struct inode *dir, struct dentry *dentry, int mode,
void *data, const struct file_operations *fops)
{
int res;

mode = (mode & (S_IRWXUGO | S_ISVTX)) | S_IFDIR;
res = debugfs_mknod(dir, dentry, mode, 0);
res = debugfs_mknod(dir, dentry, mode, 0, data, fops);
if (!res) {
inc_nlink(dir);
fsnotify_mkdir(dir, dentry);
}
return res;
}

static int debugfs_link(struct inode *dir, struct dentry *dentry, int mode)
static int debugfs_link(struct inode *dir, struct dentry *dentry, int mode,
void *data, const struct file_operations *fops)
{
mode = (mode & S_IALLUGO) | S_IFLNK;
return debugfs_mknod(dir, dentry, mode, 0);
return debugfs_mknod(dir, dentry, mode, 0, data, fops);
}

static int debugfs_create(struct inode *dir, struct dentry *dentry, int mode)
static int debugfs_create(struct inode *dir, struct dentry *dentry, int mode,
void *data, const struct file_operations *fops)
{
int res;

mode = (mode & S_IALLUGO) | S_IFREG;
res = debugfs_mknod(dir, dentry, mode, 0);
res = debugfs_mknod(dir, dentry, mode, 0, data, fops);
if (!res)
fsnotify_create(dir, dentry);
return res;
Expand Down Expand Up @@ -139,7 +149,9 @@ static struct file_system_type debug_fs_type = {

static int debugfs_create_by_name(const char *name, mode_t mode,
struct dentry *parent,
struct dentry **dentry)
struct dentry **dentry,
void *data,
const struct file_operations *fops)
{
int error = 0;

Expand All @@ -164,13 +176,16 @@ static int debugfs_create_by_name(const char *name, mode_t mode,
if (!IS_ERR(*dentry)) {
switch (mode & S_IFMT) {
case S_IFDIR:
error = debugfs_mkdir(parent->d_inode, *dentry, mode);
error = debugfs_mkdir(parent->d_inode, *dentry, mode,
data, fops);
break;
case S_IFLNK:
error = debugfs_link(parent->d_inode, *dentry, mode);
error = debugfs_link(parent->d_inode, *dentry, mode,
data, fops);
break;
default:
error = debugfs_create(parent->d_inode, *dentry, mode);
error = debugfs_create(parent->d_inode, *dentry, mode,
data, fops);
break;
}
dput(*dentry);
Expand Down Expand Up @@ -221,19 +236,13 @@ struct dentry *debugfs_create_file(const char *name, mode_t mode,
if (error)
goto exit;

error = debugfs_create_by_name(name, mode, parent, &dentry);
error = debugfs_create_by_name(name, mode, parent, &dentry,
data, fops);
if (error) {
dentry = NULL;
simple_release_fs(&debugfs_mount, &debugfs_mount_count);
goto exit;
}

if (dentry->d_inode) {
if (data)
dentry->d_inode->i_private = data;
if (fops)
dentry->d_inode->i_fop = fops;
}
exit:
return dentry;
}
Expand Down

0 comments on commit 8ac110f

Please sign in to comment.