diff options
| author | David S. Miller <davem@davemloft.net> | 2013-04-01 13:36:50 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-04-01 13:36:50 -0400 |
| commit | a210576cf891e9e6d2c238eabcf5c1286b1e7526 (patch) | |
| tree | 0fa81a901cf628b25e6ee79057700cf39e59818a /kernel/user_namespace.c | |
| parent | 7d4c04fc170087119727119074e72445f2bb192b (diff) | |
| parent | 3658f3604066d5500ebd73a04084f127dc779441 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
net/mac80211/sta_info.c
net/wireless/core.h
Two minor conflicts in wireless. Overlapping additions of extern
declarations in net/wireless/core.h and a bug fix overlapping with
the addition of a boolean parameter to __ieee80211_key_free().
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/user_namespace.c')
| -rw-r--r-- | kernel/user_namespace.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c index b14f4d34204..a54f26f82eb 100644 --- a/kernel/user_namespace.c +++ b/kernel/user_namespace.c @@ -61,6 +61,15 @@ int create_user_ns(struct cred *new) kgid_t group = new->egid; int ret; + /* + * Verify that we can not violate the policy of which files + * may be accessed that is specified by the root directory, + * by verifing that the root directory is at the root of the + * mount namespace which allows all files to be accessed. + */ + if (current_chrooted()) + return -EPERM; + /* The creator needs a mapping in the parent user namespace * or else we won't be able to reasonably tell userspace who * created a user_namespace. @@ -87,6 +96,8 @@ int create_user_ns(struct cred *new) set_cred_user_ns(new, ns); + update_mnt_policy(ns); + return 0; } |