diff options
| author | Miklos Szeredi <mszeredi@suse.cz> | 2008-02-08 04:21:43 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-08 09:22:40 -0800 |
| commit | dd2cc4dff3b08ab54c4c177a080046bcc84ac41d (patch) | |
| tree | 251643860af975f96701685729cfdec03a8b5ad5 | |
| parent | d1875dbaa58e4894f7d9321d1c280fb23ca9f9e5 (diff) | |
mount options: fix hostfs
Add the "host path" option to /proc/mounts for UML hostfs filesystems.
The mount source (mnt_devname) should really be used for this, but not
easy to change now in a backward compatible way.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/hostfs/hostfs_kern.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index 2b9b35733aa..d0549cb4fb2 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -11,6 +11,7 @@ #include <linux/mm.h> #include <linux/pagemap.h> #include <linux/statfs.h> +#include <linux/seq_file.h> #include "hostfs.h" #include "init.h" #include "kern.h" @@ -322,12 +323,25 @@ static void hostfs_destroy_inode(struct inode *inode) kfree(HOSTFS_I(inode)); } +static int hostfs_show_options(struct seq_file *seq, struct vfsmount *vfs) +{ + struct inode *root = vfs->mnt_sb->s_root->d_inode; + const char *root_path = HOSTFS_I(root)->host_filename; + size_t offset = strlen(root_ino) + 1; + + if (strlen(root_path) > offset) + seq_printf(seq, ",%s", root_path + offset); + + return 0; +} + static const struct super_operations hostfs_sbops = { .alloc_inode = hostfs_alloc_inode, .drop_inode = generic_delete_inode, .delete_inode = hostfs_delete_inode, .destroy_inode = hostfs_destroy_inode, .statfs = hostfs_statfs, + .show_options = hostfs_show_options, }; int hostfs_readdir(struct file *file, void *ent, filldir_t filldir) |