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author | David S. Miller <davem@davemloft.net> | 2010-10-06 19:11:17 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2010-10-06 19:11:17 -0700 |
commit | 12e94471b2be5ef9b55b10004a3a2cd819490036 (patch) | |
tree | f84ae818687dc7c35bd54f11bfb9717278d28a4e /security/apparmor/path.c | |
parent | 79315068f4560f3f7bd6e9790190dcb43059770c (diff) | |
parent | cb655d0f3d57c23db51b981648e452988c0223f9 (diff) | |
download | kernel_samsung_smdk4412-12e94471b2be5ef9b55b10004a3a2cd819490036.zip kernel_samsung_smdk4412-12e94471b2be5ef9b55b10004a3a2cd819490036.tar.gz kernel_samsung_smdk4412-12e94471b2be5ef9b55b10004a3a2cd819490036.tar.bz2 |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'security/apparmor/path.c')
-rw-r--r-- | security/apparmor/path.c | 38 |
1 files changed, 11 insertions, 27 deletions
diff --git a/security/apparmor/path.c b/security/apparmor/path.c index 19358dc..8239605 100644 --- a/security/apparmor/path.c +++ b/security/apparmor/path.c @@ -59,8 +59,7 @@ static int d_namespace_path(struct path *path, char *buf, int buflen, { struct path root, tmp; char *res; - int deleted, connected; - int error = 0; + int connected, error = 0; /* Get the root we want to resolve too, released below */ if (flags & PATH_CHROOT_REL) { @@ -74,19 +73,8 @@ static int d_namespace_path(struct path *path, char *buf, int buflen, } spin_lock(&dcache_lock); - /* There is a race window between path lookup here and the - * need to strip the " (deleted) string that __d_path applies - * Detect the race and relookup the path - * - * The stripping of (deleted) is a hack that could be removed - * with an updated __d_path - */ - do { - tmp = root; - deleted = d_unlinked(path->dentry); - res = __d_path(path, &tmp, buf, buflen); - - } while (deleted != d_unlinked(path->dentry)); + tmp = root; + res = __d_path(path, &tmp, buf, buflen); spin_unlock(&dcache_lock); *name = res; @@ -98,21 +86,17 @@ static int d_namespace_path(struct path *path, char *buf, int buflen, *name = buf; goto out; } - if (deleted) { - /* On some filesystems, newly allocated dentries appear to the - * security_path hooks as a deleted dentry except without an - * inode allocated. - * - * Remove the appended deleted text and return as string for - * normal mediation, or auditing. The (deleted) string is - * guaranteed to be added in this case, so just strip it. - */ - buf[buflen - 11] = 0; /* - (len(" (deleted)") +\0) */ - if (path->dentry->d_inode && !(flags & PATH_MEDIATE_DELETED)) { + /* Handle two cases: + * 1. A deleted dentry && profile is not allowing mediation of deleted + * 2. On some filesystems, newly allocated dentries appear to the + * security_path hooks as a deleted dentry except without an inode + * allocated. + */ + if (d_unlinked(path->dentry) && path->dentry->d_inode && + !(flags & PATH_MEDIATE_DELETED)) { error = -ENOENT; goto out; - } } /* Determine if the path is connected to the expected root */ |