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author | 2017-07-05 16:25:23 +0100 | |
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committer | 2017-07-11 06:06:18 -0400 | |
commit | 677018a6ce620c8ca85abae1a07a41d66247d420 (patch) | |
tree | ad8d2985111d9f98756dcce72e2dc65a43bf063c /fs | |
parent | affs: Implement show_options (diff) | |
download | linux-677018a6ce620c8ca85abae1a07a41d66247d420.tar.gz linux-677018a6ce620c8ca85abae1a07a41d66247d420.tar.bz2 linux-677018a6ce620c8ca85abae1a07a41d66247d420.zip |
afs: Implement show_options
Implement the show_options superblock op for afs as part of a bid to get
rid of s_options and generic_show_options() to make it easier to implement
a context-based mount where the mount options can be passed individually
over a file descriptor.
Also implement the show_devname op to display the correct device name and thus
avoid the need to display the cell= and volume= options.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-afs@lists.infradead.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/afs/super.c | 45 |
1 files changed, 43 insertions, 2 deletions
diff --git a/fs/afs/super.c b/fs/afs/super.c index c79633e5cfd8..35d7e550b29c 100644 --- a/fs/afs/super.c +++ b/fs/afs/super.c @@ -37,6 +37,8 @@ static void afs_kill_super(struct super_block *sb); static struct inode *afs_alloc_inode(struct super_block *sb); static void afs_destroy_inode(struct inode *inode); static int afs_statfs(struct dentry *dentry, struct kstatfs *buf); +static int afs_show_devname(struct seq_file *m, struct dentry *root); +static int afs_show_options(struct seq_file *m, struct dentry *root); struct file_system_type afs_fs_type = { .owner = THIS_MODULE, @@ -53,7 +55,8 @@ static const struct super_operations afs_super_ops = { .drop_inode = afs_drop_inode, .destroy_inode = afs_destroy_inode, .evict_inode = afs_evict_inode, - .show_options = generic_show_options, + .show_devname = afs_show_devname, + .show_options = afs_show_options, }; static struct kmem_cache *afs_inode_cachep; @@ -136,6 +139,45 @@ void __exit afs_fs_exit(void) } /* + * Display the mount device name in /proc/mounts. + */ +static int afs_show_devname(struct seq_file *m, struct dentry *root) +{ + struct afs_super_info *as = root->d_sb->s_fs_info; + struct afs_volume *volume = as->volume; + struct afs_cell *cell = volume->cell; + const char *suf = ""; + char pref = '%'; + + switch (volume->type) { + case AFSVL_RWVOL: + break; + case AFSVL_ROVOL: + pref = '#'; + if (volume->type_force) + suf = ".readonly"; + break; + case AFSVL_BACKVOL: + pref = '#'; + suf = ".backup"; + break; + } + + seq_printf(m, "%c%s:%s%s", pref, cell->name, volume->vlocation->vldb.name, suf); + return 0; +} + +/* + * Display the mount options in /proc/mounts. + */ +static int afs_show_options(struct seq_file *m, struct dentry *root) +{ + if (test_bit(AFS_VNODE_AUTOCELL, &AFS_FS_I(d_inode(root))->flags)) + seq_puts(m, "autocell"); + return 0; +} + +/* * parse the mount options * - this function has been shamelessly adapted from the ext3 fs which * shamelessly adapted it from the msdos fs @@ -426,7 +468,6 @@ static struct dentry *afs_mount(struct file_system_type *fs_type, deactivate_locked_super(sb); goto error; } - save_mount_options(sb, new_opts); sb->s_flags |= MS_ACTIVE; } else { _debug("reuse"); |