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| author | Miklos Szeredi <mszeredi@suse.cz> | 2008-03-27 13:06:24 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2008-04-23 00:04:57 -0400 |
| commit | a1a2c409b666befc58c2db9c7fbddf200f153470 (patch) | |
| tree | 3ea8e4c8f1311436939492d70de23dcf185994de /fs/namespace.c | |
| parent | 719f5d7f0b90ac2c8f8ca4232eb322b266fea01e (diff) | |
| download | lwn-a1a2c409b666befc58c2db9c7fbddf200f153470.tar.gz lwn-a1a2c409b666befc58c2db9c7fbddf200f153470.zip | |
[patch 5/7] vfs: mountinfo: allow using process root
Allow /proc/<pid>/mountinfo to use the root of <pid> to calculate
mountpoints.
- move definition of 'struct proc_mounts' to <linux/mnt_namespace.h>
- add the process's namespace and root to this structure
- pass a pointer to 'struct proc_mounts' into seq_operations
In addition the following cleanups are made:
- use a common open function for /proc/<pid>/{mounts,mountstat}
- surround namespace.c part of these proc files with #ifdef CONFIG_PROC_FS
- make the seq_operations structures const
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namespace.c')
| -rw-r--r-- | fs/namespace.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index cefa1d9939b0..dfdf51e81c1c 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -724,20 +724,21 @@ void save_mount_options(struct super_block *sb, char *options) } EXPORT_SYMBOL(save_mount_options); +#ifdef CONFIG_PROC_FS /* iterator */ static void *m_start(struct seq_file *m, loff_t *pos) { - struct mnt_namespace *n = m->private; + struct proc_mounts *p = m->private; down_read(&namespace_sem); - return seq_list_start(&n->list, *pos); + return seq_list_start(&p->ns->list, *pos); } static void *m_next(struct seq_file *m, void *v, loff_t *pos) { - struct mnt_namespace *n = m->private; + struct proc_mounts *p = m->private; - return seq_list_next(v, &n->list, pos); + return seq_list_next(v, &p->ns->list, pos); } static void m_stop(struct seq_file *m, void *v) @@ -794,7 +795,7 @@ static int show_vfsmnt(struct seq_file *m, void *v) return err; } -struct seq_operations mounts_op = { +const struct seq_operations mounts_op = { .start = m_start, .next = m_next, .stop = m_stop, @@ -833,12 +834,13 @@ static int show_vfsstat(struct seq_file *m, void *v) return err; } -struct seq_operations mountstats_op = { +const struct seq_operations mountstats_op = { .start = m_start, .next = m_next, .stop = m_stop, .show = show_vfsstat, }; +#endif /* CONFIG_PROC_FS */ /** * may_umount_tree - check if a mount tree is busy |