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sysctl: Add ctl_table chains into cstring paths

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For any component of table passed to __register_sysctl_paths
that actually serves as a path, add that to the cstring path
that is passed to __register_sysctl_table.

The result is that for most calls to __register_sysctl_paths
we only pass a table to __register_sysctl_table that contains
no child directories.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2012-01-21 12:35:23 -08:00
parent 6e9d516415
commit ec6a52668d
1 changed files with 9 additions and 0 deletions
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9
fs/proc/proc_sysctl.c
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@ -1076,6 +1076,7 @@ struct ctl_table_header *__register_sysctl_paths(
struct nsproxy *namespaces, struct nsproxy *namespaces,
const struct ctl_path *path, struct ctl_table *table) const struct ctl_path *path, struct ctl_table *table)
{ {
struct ctl_table *ctl_table_arg = table;
struct ctl_table_header *header = NULL; struct ctl_table_header *header = NULL;
const struct ctl_path *component; const struct ctl_path *component;
char *new_path, *pos; char *new_path, *pos;
@ -1090,7 +1091,15 @@ struct ctl_table_header *__register_sysctl_paths(
if (!pos) if (!pos)
goto out; goto out;
} }
while (table->procname && table->child && !table[1].procname) {
pos = append_path(new_path, pos, table->procname);
if (!pos)
goto out;
table = table->child;
}
header = __register_sysctl_table(root, namespaces, new_path, table); header = __register_sysctl_table(root, namespaces, new_path, table);
if (header)
header->ctl_table_arg = ctl_table_arg;
out: out:
kfree(new_path); kfree(new_path);
return header; return header;