Ping again.
Eric, could you take a look at this patch and ack it if it is okay?
Thanks!
On 10/22/19 8:05 PM, Yonghong Song wrote:
>
> Hi, Eric,
>
> Could you take a look at this patch the series as well?
> If it looks good, could you ack the patch #1?
>
> Thanks!
>
> On 10/22/19 12:17 PM, Carlos Neira wrote:
>> ns_match returns true if the namespace inode and dev_t matches the ones
>> provided by the caller.
>>
>> Signed-off-by: Carlos Neira <cneirabustos@xxxxxxxxx>
>> ---
>> fs/nsfs.c | 14 ++++++++++++++
>> include/linux/proc_ns.h | 2 ++
>> 2 files changed, 16 insertions(+)
>>
>> diff --git a/fs/nsfs.c b/fs/nsfs.c
>> index a0431642c6b5..ef59cf347285 100644
>> --- a/fs/nsfs.c
>> +++ b/fs/nsfs.c
>> @@ -245,6 +245,20 @@ struct file *proc_ns_fget(int fd)
>> return ERR_PTR(-EINVAL);
>> }
>>
>> +/**
>> + * ns_match() - Returns true if current namespace matches dev/ino provided.
>> + * @ns_common: current ns
>> + * @dev: dev_t from nsfs that will be matched against current nsfs
>> + * @ino: ino_t from nsfs that will be matched against current nsfs
>> + *
>> + * Return: true if dev and ino matches the current nsfs.
>> + */
>> +bool ns_match(const struct ns_common *ns, dev_t dev, ino_t ino)
>> +{
>> + return (ns->inum == ino) && (nsfs_mnt->mnt_sb->s_dev == dev);
>> +}
>> +
>> +
>> static int nsfs_show_path(struct seq_file *seq, struct dentry *dentry)
>> {
>> struct inode *inode = d_inode(dentry);
>> diff --git a/include/linux/proc_ns.h b/include/linux/proc_ns.h
>> index d31cb6215905..1da9f33489f3 100644
>> --- a/include/linux/proc_ns.h
>> +++ b/include/linux/proc_ns.h
>> @@ -82,6 +82,8 @@ typedef struct ns_common *ns_get_path_helper_t(void *);
>> extern void *ns_get_path_cb(struct path *path, ns_get_path_helper_t ns_get_cb,
>> void *private_data);
>>
>> +extern bool ns_match(const struct ns_common *ns, dev_t dev, ino_t ino);
>> +
>> extern int ns_get_name(char *buf, size_t size, struct task_struct *task,
>> const struct proc_ns_operations *ns_ops);
>> extern void nsfs_init(void);
>>
