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| author | Peter Oberparleiter <peter.oberparleiter@de.ibm.com> | 2007-02-13 14:13:54 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-02-17 02:19:17 +0300 |
| commit | 66f5496393dcc9f9d05c46f00ed93d5040d6035b (patch) | |
| tree | d5952a691e346b2715252d8b8cd2100d6c804a39 /fs/debugfs/file.c | |
| parent | b92be9f1ecd3c8b16e9bb22d55bb97b3d89f091a (diff) | |
| download | linux-66f5496393dcc9f9d05c46f00ed93d5040d6035b.tar.xz | |
debugfs: implement symbolic links
debugfs: implement symbolic links
Implement a new function debugfs_create_symlink() which can be used
to create symbolic links in debugfs. This function can be useful
for people moving functionality from /proc to debugfs (e.g. the
gcov-kernel patch).
Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/debugfs/file.c')
| -rw-r--r-- | fs/debugfs/file.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c index 8d130cc85322..682f928b7f4d 100644 --- a/fs/debugfs/file.c +++ b/fs/debugfs/file.c @@ -16,6 +16,7 @@ #include <linux/module.h> #include <linux/fs.h> #include <linux/pagemap.h> +#include <linux/namei.h> #include <linux/debugfs.h> static ssize_t default_read_file(struct file *file, char __user *buf, @@ -44,6 +45,17 @@ const struct file_operations debugfs_file_operations = { .open = default_open, }; +static void *debugfs_follow_link(struct dentry *dentry, struct nameidata *nd) +{ + nd_set_link(nd, dentry->d_inode->i_private); + return NULL; +} + +const struct inode_operations debugfs_link_operations = { + .readlink = generic_readlink, + .follow_link = debugfs_follow_link, +}; + static void debugfs_u8_set(void *data, u64 val) { *(u8 *)data = val; |