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| author | John Johansen <john.johansen@canonical.com> | 2012-02-16 06:28:50 -0800 |
|---|---|---|
| committer | John Johansen <john.johansen@canonical.com> | 2012-03-14 06:15:22 -0700 |
| commit | fbba8d89acea5d628d1d076b1d8962db438ff832 (patch) | |
| tree | 1e3a27cb78369676de62f8587d84d281224df1ff /security | |
| parent | 33e521acff709d275950ec5bf8dd577d873cd61e (diff) | |
| download | lwn-fbba8d89acea5d628d1d076b1d8962db438ff832.tar.gz lwn-fbba8d89acea5d628d1d076b1d8962db438ff832.zip | |
AppArmor: Retrieve the dentry_path for error reporting when path lookup fails
When __d_path and d_absolute_path fail due to the name being outside of
the current namespace no name is reported. Use dentry_path to provide
some hint as to which file was being accessed.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Kees Cook <kees@ubuntu.com>
Diffstat (limited to 'security')
| -rw-r--r-- | security/apparmor/path.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/security/apparmor/path.c b/security/apparmor/path.c index 3dd605c69970..8c90fd0f49c5 100644 --- a/security/apparmor/path.c +++ b/security/apparmor/path.c @@ -94,18 +94,21 @@ static int d_namespace_path(struct path *path, char *buf, int buflen, } else res = d_absolute_path(path, buf, buflen); - *name = res; /* handle error conditions - and still allow a partial path to * be returned. */ if (IS_ERR(res)) { - error = PTR_ERR(res); - *name = buf; - goto out; - } - if (!our_mnt(path->mnt)) + res = dentry_path_raw(path->dentry, buf, buflen); + if (IS_ERR(res)) { + error = PTR_ERR(res); + *name = buf; + goto out; + }; + } else if (!our_mnt(path->mnt)) connected = 0; + *name = res; + ok: /* Handle two cases: * 1. A deleted dentry && profile is not allowing mediation of deleted |