Messages in this thread | | | Date | Mon, 6 Mar 2023 14:45:49 -0500 | Subject | Re: [PATCH 20/28] security: Introduce inode_post_set_acl hook | From | Stefan Berger <> |
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On 3/3/23 13:18, Roberto Sassu wrote: > From: Roberto Sassu <roberto.sassu@huawei.com> > > In preparation for moving IMA and EVM to the LSM infrastructure, introduce > the inode_post_set_acl hook. > > Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com> > --- > fs/posix_acl.c | 1 + > include/linux/lsm_hook_defs.h | 2 ++ > include/linux/security.h | 7 +++++++ > security/security.c | 17 +++++++++++++++++ > 4 files changed, 27 insertions(+) > > diff --git a/fs/posix_acl.c b/fs/posix_acl.c > index 5a76fb35923..acddf2dff4c 100644 > --- a/fs/posix_acl.c > +++ b/fs/posix_acl.c > @@ -1102,6 +1102,7 @@ int vfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, > error = -EOPNOTSUPP; > if (!error) { > fsnotify_xattr(dentry); > + security_inode_post_set_acl(dentry, acl_name, kacl); > evm_inode_post_set_acl(dentry, acl_name, kacl); > } > > diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h > index 5dc2a7c3d9a..9a3e14db0af 100644 > --- a/include/linux/lsm_hook_defs.h > +++ b/include/linux/lsm_hook_defs.h > @@ -156,6 +156,8 @@ LSM_HOOK(void, LSM_RET_VOID, inode_post_removexattr, struct dentry *dentry, > const char *name) > LSM_HOOK(int, 0, inode_set_acl, struct mnt_idmap *idmap, > struct dentry *dentry, const char *acl_name, struct posix_acl *kacl) > +LSM_HOOK(void, LSM_RET_VOID, inode_post_set_acl, struct dentry *dentry, > + const char *acl_name, struct posix_acl *kacl) > LSM_HOOK(int, 0, inode_get_acl, struct mnt_idmap *idmap, > struct dentry *dentry, const char *acl_name) > LSM_HOOK(int, 0, inode_remove_acl, struct mnt_idmap *idmap, > diff --git a/include/linux/security.h b/include/linux/security.h > index b3e201404dc..b0691bf7237 100644 > --- a/include/linux/security.h > +++ b/include/linux/security.h > @@ -366,6 +366,8 @@ int security_inode_setxattr(struct mnt_idmap *idmap, > int security_inode_set_acl(struct mnt_idmap *idmap, > struct dentry *dentry, const char *acl_name, > struct posix_acl *kacl); > +void security_inode_post_set_acl(struct dentry *dentry, const char *acl_name, > + struct posix_acl *kacl); > int security_inode_get_acl(struct mnt_idmap *idmap, > struct dentry *dentry, const char *acl_name); > int security_inode_remove_acl(struct mnt_idmap *idmap, > @@ -893,6 +895,11 @@ static inline int security_inode_set_acl(struct mnt_idmap *idmap, > return 0; > } > > +static inline void security_inode_post_set_acl(struct dentry *dentry, > + const char *acl_name, > + struct posix_acl *kacl) > +{ } > + > static inline int security_inode_get_acl(struct mnt_idmap *idmap, > struct dentry *dentry, > const char *acl_name) > diff --git a/security/security.c b/security/security.c > index 8883082b686..fc11d70bb02 100644 > --- a/security/security.c > +++ b/security/security.c > @@ -2310,6 +2310,23 @@ int security_inode_set_acl(struct mnt_idmap *idmap, > return evm_inode_set_acl(idmap, dentry, acl_name, kacl); > } > > +/** > + * security_inode_post_set_acl() - Update inode sec after set_acl operation
'sec' because 'security' doesn't let this fit into 80 characters for the line?
Update inode security after set_acl op :-/ Update inode security after set_acl() :-)
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
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