| Message ID | 20230904133415.1799503-2-roberto.sassu@huaweicloud.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Paul Moore |
| Headers | show |
| Series | security: Move IMA and EVM to the LSM infrastructure | expand |
On Mon, 2023-09-04 at 15:33 +0200, Roberto Sassu wrote: > From: Roberto Sassu <roberto.sassu@huawei.com> > > Change ima_inode_post_setattr() definition, so that it can be registered as > implementation of the inode_post_setattr hook. Please indicate inode_post_settattr() is a new hook. In general it should be stated on first usage. In 02/25 the wording "(to be introduced)" is used, but not on first usage. Please add "(to be introduced)" after inode_post_setattr. Adding a new security hook argument would be to support both IMA and EVM, which have different options. Mimi > Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com> > Reviewed-by: Stefan Berger <stefanb@linux.ibm.com> > --- > fs/attr.c | 2 +- > include/linux/ima.h | 4 ++-- > security/integrity/ima/ima_appraise.c | 3 ++- > 3 files changed, 5 insertions(+), 4 deletions(-) > > diff --git a/fs/attr.c b/fs/attr.c > index d60dc1edb526..7d4553c1208d 100644 > --- a/fs/attr.c > +++ b/fs/attr.c > @@ -486,7 +486,7 @@ int notify_change(struct mnt_idmap *idmap, struct dentry *dentry, > > if (!error) { > fsnotify_change(dentry, ia_valid); > - ima_inode_post_setattr(idmap, dentry); > + ima_inode_post_setattr(idmap, dentry, ia_valid); > evm_inode_post_setattr(dentry, ia_valid); > } > > diff --git a/include/linux/ima.h b/include/linux/ima.h > index 86b57757c7b1..910a2f11a906 100644 > --- a/include/linux/ima.h > +++ b/include/linux/ima.h > @@ -186,7 +186,7 @@ static inline void ima_post_key_create_or_update(struct key *keyring, > #ifdef CONFIG_IMA_APPRAISE > extern bool is_ima_appraise_enabled(void); > extern void ima_inode_post_setattr(struct mnt_idmap *idmap, > - struct dentry *dentry); > + struct dentry *dentry, int ia_valid); > extern int ima_inode_setxattr(struct dentry *dentry, const char *xattr_name, > const void *xattr_value, size_t xattr_value_len); > extern int ima_inode_set_acl(struct mnt_idmap *idmap, > @@ -206,7 +206,7 @@ static inline bool is_ima_appraise_enabled(void) > } > h > static inline void ima_inode_post_setattr(struct mnt_idmap *idmap, > - struct dentry *dentry) > + struct dentry *dentry, int ia_valid) > { > return; > } > diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c > index 491c1aca0b1c..6b032bce4fe7 100644 > --- a/security/integrity/ima/ima_appraise.c > +++ b/security/integrity/ima/ima_appraise.c > @@ -627,6 +627,7 @@ void ima_update_xattr(struct integrity_iint_cache *iint, struct file *file) > * ima_inode_post_setattr - reflect file metadata changes > * @idmap: idmap of the mount the inode was found from > * @dentry: pointer to the affected dentry > + * @ia_valid: for the UID and GID status > * > * Changes to a dentry's metadata might result in needing to appraise. > * > @@ -634,7 +635,7 @@ void ima_update_xattr(struct integrity_iint_cache *iint, struct file *file) > * to lock the inode's i_mutex. > */ > void ima_inode_post_setattr(struct mnt_idmap *idmap, > - struct dentry *dentry) > + struct dentry *dentry, int ia_valid) > { > struct inode *inode = d_backing_inode(dentry); > struct integrity_iint_cache *iint;
diff --git a/fs/attr.c b/fs/attr.c index d60dc1edb526..7d4553c1208d 100644 --- a/fs/attr.c +++ b/fs/attr.c @@ -486,7 +486,7 @@ int notify_change(struct mnt_idmap *idmap, struct dentry *dentry, if (!error) { fsnotify_change(dentry, ia_valid); - ima_inode_post_setattr(idmap, dentry); + ima_inode_post_setattr(idmap, dentry, ia_valid); evm_inode_post_setattr(dentry, ia_valid); } diff --git a/include/linux/ima.h b/include/linux/ima.h index 86b57757c7b1..910a2f11a906 100644 --- a/include/linux/ima.h +++ b/include/linux/ima.h @@ -186,7 +186,7 @@ static inline void ima_post_key_create_or_update(struct key *keyring, #ifdef CONFIG_IMA_APPRAISE extern bool is_ima_appraise_enabled(void); extern void ima_inode_post_setattr(struct mnt_idmap *idmap, - struct dentry *dentry); + struct dentry *dentry, int ia_valid); extern int ima_inode_setxattr(struct dentry *dentry, const char *xattr_name, const void *xattr_value, size_t xattr_value_len); extern int ima_inode_set_acl(struct mnt_idmap *idmap, @@ -206,7 +206,7 @@ static inline bool is_ima_appraise_enabled(void) } static inline void ima_inode_post_setattr(struct mnt_idmap *idmap, - struct dentry *dentry) + struct dentry *dentry, int ia_valid) { return; } diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c index 491c1aca0b1c..6b032bce4fe7 100644 --- a/security/integrity/ima/ima_appraise.c +++ b/security/integrity/ima/ima_appraise.c @@ -627,6 +627,7 @@ void ima_update_xattr(struct integrity_iint_cache *iint, struct file *file) * ima_inode_post_setattr - reflect file metadata changes * @idmap: idmap of the mount the inode was found from * @dentry: pointer to the affected dentry + * @ia_valid: for the UID and GID status * * Changes to a dentry's metadata might result in needing to appraise. * @@ -634,7 +635,7 @@ void ima_update_xattr(struct integrity_iint_cache *iint, struct file *file) * to lock the inode's i_mutex. */ void ima_inode_post_setattr(struct mnt_idmap *idmap, - struct dentry *dentry) + struct dentry *dentry, int ia_valid) { struct inode *inode = d_backing_inode(dentry); struct integrity_iint_cache *iint;