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authorChristian Brauner <brauner@kernel.org>2022-06-26 18:06:01 +0200
committerChristian Brauner (Microsoft) <brauner@kernel.org>2022-10-26 10:03:19 +0200
commit5e26a01e56fd03647d14b4461eeb69abde88a4e3 (patch)
tree24c7151042372ef13ac666d835b67a87eb72e3d3
parentb7c9b6751242fec703c1b7d1bcfea1d80fe00c8d (diff)
apparmor: use type safe idmapping helpers
We already ported most parts and filesystems over for v6.0 to the new vfs{g,u}id_t type and associated helpers for v6.0. Convert the remaining places so we can remove all the old helpers. This is a non-functional change. Reviewed-by: Seth Forshee (DigitalOcean) <sforshee@kernel.org> Acked-by: John Johansen <john.johansen@canonical.com> Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
-rw-r--r--security/apparmor/domain.c8
-rw-r--r--security/apparmor/file.c4
-rw-r--r--security/apparmor/lsm.c25
3 files changed, 24 insertions, 13 deletions
diff --git a/security/apparmor/domain.c b/security/apparmor/domain.c
index 91689d34d281..7bafb4c4767c 100644
--- a/security/apparmor/domain.c
+++ b/security/apparmor/domain.c
@@ -859,10 +859,10 @@ int apparmor_bprm_creds_for_exec(struct linux_binprm *bprm)
const char *info = NULL;
int error = 0;
bool unsafe = false;
- kuid_t i_uid = i_uid_into_mnt(file_mnt_user_ns(bprm->file),
- file_inode(bprm->file));
+ vfsuid_t vfsuid = i_uid_into_vfsuid(file_mnt_user_ns(bprm->file),
+ file_inode(bprm->file));
struct path_cond cond = {
- i_uid,
+ vfsuid_into_kuid(vfsuid),
file_inode(bprm->file)->i_mode
};
@@ -970,7 +970,7 @@ audit:
error = fn_for_each(label, profile,
aa_audit_file(profile, &nullperms, OP_EXEC, MAY_EXEC,
bprm->filename, NULL, new,
- i_uid, info, error));
+ vfsuid_into_kuid(vfsuid), info, error));
aa_put_label(new);
goto done;
}
diff --git a/security/apparmor/file.c b/security/apparmor/file.c
index e1b7e93602e4..d43679894d23 100644
--- a/security/apparmor/file.c
+++ b/security/apparmor/file.c
@@ -510,8 +510,10 @@ static int __file_path_perm(const char *op, struct aa_label *label,
{
struct aa_profile *profile;
struct aa_perms perms = {};
+ vfsuid_t vfsuid = i_uid_into_vfsuid(file_mnt_user_ns(file),
+ file_inode(file));
struct path_cond cond = {
- .uid = i_uid_into_mnt(file_mnt_user_ns(file), file_inode(file)),
+ .uid = vfsuid_into_kuid(vfsuid),
.mode = file_inode(file)->i_mode
};
char *buffer;
diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index f56070270c69..f34675f7c3df 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -225,8 +225,10 @@ static int common_perm(const char *op, const struct path *path, u32 mask,
static int common_perm_cond(const char *op, const struct path *path, u32 mask)
{
struct user_namespace *mnt_userns = mnt_user_ns(path->mnt);
+ vfsuid_t vfsuid = i_uid_into_vfsuid(mnt_userns,
+ d_backing_inode(path->dentry));
struct path_cond cond = {
- i_uid_into_mnt(mnt_userns, d_backing_inode(path->dentry)),
+ vfsuid_into_kuid(vfsuid),
d_backing_inode(path->dentry)->i_mode
};
@@ -270,11 +272,13 @@ static int common_perm_rm(const char *op, const struct path *dir,
struct inode *inode = d_backing_inode(dentry);
struct user_namespace *mnt_userns = mnt_user_ns(dir->mnt);
struct path_cond cond = { };
+ vfsuid_t vfsuid;
if (!inode || !path_mediated_fs(dentry))
return 0;
- cond.uid = i_uid_into_mnt(mnt_userns, inode);
+ vfsuid = i_uid_into_vfsuid(mnt_userns, inode);
+ cond.uid = vfsuid_into_kuid(vfsuid);
cond.mode = inode->i_mode;
return common_perm_dir_dentry(op, dir, dentry, mask, &cond);
@@ -368,20 +372,23 @@ static int apparmor_path_rename(const struct path *old_dir, struct dentry *old_d
label = begin_current_label_crit_section();
if (!unconfined(label)) {
struct user_namespace *mnt_userns = mnt_user_ns(old_dir->mnt);
+ vfsuid_t vfsuid;
struct path old_path = { .mnt = old_dir->mnt,
.dentry = old_dentry };
struct path new_path = { .mnt = new_dir->mnt,
.dentry = new_dentry };
struct path_cond cond = {
- i_uid_into_mnt(mnt_userns, d_backing_inode(old_dentry)),
- d_backing_inode(old_dentry)->i_mode
+ .mode = d_backing_inode(old_dentry)->i_mode
};
+ vfsuid = i_uid_into_vfsuid(mnt_userns, d_backing_inode(old_dentry));
+ cond.uid = vfsuid_into_kuid(vfsuid);
if (flags & RENAME_EXCHANGE) {
struct path_cond cond_exchange = {
- i_uid_into_mnt(mnt_userns, d_backing_inode(new_dentry)),
- d_backing_inode(new_dentry)->i_mode
+ .mode = d_backing_inode(new_dentry)->i_mode,
};
+ vfsuid = i_uid_into_vfsuid(mnt_userns, d_backing_inode(old_dentry));
+ cond_exchange.uid = vfsuid_into_kuid(vfsuid);
error = aa_path_perm(OP_RENAME_SRC, label, &new_path, 0,
MAY_READ | AA_MAY_GETATTR | MAY_WRITE |
@@ -447,10 +454,12 @@ static int apparmor_file_open(struct file *file)
if (!unconfined(label)) {
struct user_namespace *mnt_userns = file_mnt_user_ns(file);
struct inode *inode = file_inode(file);
+ vfsuid_t vfsuid;
struct path_cond cond = {
- i_uid_into_mnt(mnt_userns, inode),
- inode->i_mode
+ .mode = inode->i_mode,
};
+ vfsuid = i_uid_into_vfsuid(mnt_userns, inode);
+ cond.uid = vfsuid_into_kuid(vfsuid);
error = aa_path_perm(OP_OPEN, label, &file->f_path, 0,
aa_map_file_to_perms(file), &cond);