[PATCH -V16 10/12] vfs: Export file system uuid via /proc/<pid>mountinfo
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From: Aneesh Kumar K.V on 12 Jul 2010 02:40 We add a per superblock uuid field. File systems should update the uuid in the fill_super callback Signed-off-by: Aneesh Kumar K.V <aneesh.kumar(a)linux.vnet.ibm.com> --- fs/namespace.c | 3 +++ include/linux/fs.h | 1 + 2 files changed, 4 insertions(+), 0 deletions(-) diff --git a/fs/namespace.c b/fs/namespace.c index 88058de..5dbdbd6 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -871,6 +871,9 @@ static int show_mountinfo(struct seq_file *m, void *v) if (IS_MNT_UNBINDABLE(mnt)) seq_puts(m, " unbindable"); + /* print the uuid */ + seq_printf(m, " uuid:%pU", mnt->mnt_sb->s_uuid); + /* Filesystem specific data */ seq_puts(m, " - "); show_type(m, sb); diff --git a/include/linux/fs.h b/include/linux/fs.h index 3103c39..5f43472 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1367,6 +1367,7 @@ struct super_block { wait_queue_head_t s_wait_unfrozen; char s_id[32]; /* Informational name */ + u8 s_uuid[16]; /* UUID */ void *s_fs_info; /* Filesystem private info */ fmode_t s_mode; -- 1.7.2.rc1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |