diff options
Diffstat (limited to 'meta-rcar-gen2/recipes-kernel/linux/linux-renesas/smack/0047-smack-introduce-a-special-case-for-tmpfs-in-smack_d_.patch')
| -rw-r--r-- | meta-rcar-gen2/recipes-kernel/linux/linux-renesas/smack/0047-smack-introduce-a-special-case-for-tmpfs-in-smack_d_.patch | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/meta-rcar-gen2/recipes-kernel/linux/linux-renesas/smack/0047-smack-introduce-a-special-case-for-tmpfs-in-smack_d_.patch b/meta-rcar-gen2/recipes-kernel/linux/linux-renesas/smack/0047-smack-introduce-a-special-case-for-tmpfs-in-smack_d_.patch new file mode 100644 index 0000000..255da99 --- /dev/null +++ b/meta-rcar-gen2/recipes-kernel/linux/linux-renesas/smack/0047-smack-introduce-a-special-case-for-tmpfs-in-smack_d_.patch @@ -0,0 +1,56 @@ +From 11d11ff47a952f09a85be5ed85c83ee19f8a74d2 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?=C5=81ukasz=20Stelmach?= <l.stelmach@samsung.com> +Date: Tue, 16 Dec 2014 16:53:08 +0100 +Subject: [PATCH 47/54] smack: introduce a special case for tmpfs in + smack_d_instantiate() +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Files created with __shmem_file_stup() appear to have somewhat fake +dentries which make them look like root directories and not get +the label the current process or ("*") star meant for tmpfs files. + +Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com> +--- + security/smack/smack_lsm.c | 16 ++++++++++++++-- + 1 file changed, 14 insertions(+), 2 deletions(-) + +diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c +index 2ec6cdb..bc43227 100644 +--- a/security/smack/smack_lsm.c ++++ b/security/smack/smack_lsm.c +@@ -3037,7 +3037,8 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode) + * of the superblock. + */ + if (opt_dentry->d_parent == opt_dentry) { +- if (sbp->s_magic == CGROUP_SUPER_MAGIC) { ++ switch (sbp->s_magic) { ++ case CGROUP_SUPER_MAGIC: + /* + * The cgroup filesystem is never mounted, + * so there's no opportunity to set the mount +@@ -3045,8 +3046,19 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode) + */ + sbsp->smk_root = &smack_known_star; + sbsp->smk_default = &smack_known_star; ++ isp->smk_inode = sbsp->smk_root; ++ break; ++ case TMPFS_MAGIC: ++ /* ++ * What about shmem/tmpfs anonymous files with dentry ++ * obtained from d_alloc_pseudo()? ++ */ ++ isp->smk_inode = smk_of_current(); ++ break; ++ default: ++ isp->smk_inode = sbsp->smk_root; ++ break; + } +- isp->smk_inode = sbsp->smk_root; + isp->smk_flags |= SMK_INODE_INSTANT; + goto unlockandout; + } +-- +2.1.4 + |