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spufs: Implement show_options 

Implement the show_options superblock op for spufs 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.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Jeremy Kerr <jk@ozlabs.org>
cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
David Howells 2017-07-05 16:24:56 +01:00 committed by Al Viro
parent 4cc7c1864b
commit a66ca4146f
1 changed files with 19 additions and 3 deletions
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22
arch/powerpc/platforms/cell/spufs/inode.c
View File

@ -605,6 +605,24 @@ static const match_table_t spufs_tokens = {
{ Opt_err, NULL },
};
static int spufs_show_options(struct seq_file *m, struct dentry *root)
{
struct spufs_sb_info *sbi = spufs_get_sb_info(root->d_sb);
struct inode *inode = root->d_inode;
if (!uid_eq(inode->i_uid, GLOBAL_ROOT_UID))
seq_printf(m, ",uid=%u",
from_kuid_munged(&init_user_ns, inode->i_uid));
if (!gid_eq(inode->i_gid, GLOBAL_ROOT_GID))
seq_printf(m, ",gid=%u",
from_kgid_munged(&init_user_ns, inode->i_gid));
if ((inode->i_mode & S_IALLUGO) != 0775)
seq_printf(m, ",mode=%o", inode->i_mode);
if (sbi->debug)
seq_puts(m, ",debug");
return 0;
}
static int
spufs_parse_options(struct super_block *sb, char *options, struct inode *root)
{
@ -724,11 +742,9 @@ spufs_fill_super(struct super_block *sb, void *data, int silent)
.destroy_inode = spufs_destroy_inode,
.statfs = simple_statfs,
.evict_inode = spufs_evict_inode,
.show_options = generic_show_options,
.show_options = spufs_show_options,
};
save_mount_options(sb, data);
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;