diff options
| author | Mike Salvatore <mike.salvatore@canonical.com> | 2020-03-30 16:43:29 -0400 |
|---|---|---|
| committer | John Johansen <john.johansen@canonical.com> | 2022-10-03 14:49:02 -0700 |
| commit | 408d53e923bd852d5d80243a642004163db53a87 (patch) | |
| tree | 9c3b52675bc86ff7dde78510078f199443642144 /security/apparmor/include | |
| parent | 2218d08123362c63bab257caf5ec3bc1a6e87ae9 (diff) | |
| download | linux-408d53e923bd852d5d80243a642004163db53a87.tar.bz2 | |
apparmor: compute file permissions on profile load
Rather than computing file permissions for each file access, file
permissions can be computed once on profile load and stored for lookup.
Signed-off-by: Mike Salvatore <mike.salvatore@canonical.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Diffstat (limited to 'security/apparmor/include')
| -rw-r--r-- | security/apparmor/include/file.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/security/apparmor/include/file.h b/security/apparmor/include/file.h index 029cb20e322d..ab201d625a34 100644 --- a/security/apparmor/include/file.h +++ b/security/apparmor/include/file.h @@ -181,11 +181,13 @@ struct aa_file_rules { /* struct perms perms; */ struct aa_domain trans; /* TODO: add delegate table */ + struct aa_perms *fperms_table; }; -struct aa_perms aa_compute_fperms(struct aa_dfa *dfa, unsigned int state, - struct path_cond *cond); -unsigned int aa_str_perms(struct aa_dfa *dfa, unsigned int start, +void aa_compute_fperms(struct aa_file_rules *file_rules); +struct aa_perms *aa_lookup_fperms(struct aa_file_rules *file_rules, + unsigned int state, struct path_cond *cond); +unsigned int aa_str_perms(struct aa_file_rules *file_rules, unsigned int start, const char *name, struct path_cond *cond, struct aa_perms *perms); @@ -204,10 +206,17 @@ int aa_file_perm(const char *op, struct aa_label *label, struct file *file, void aa_inherit_files(const struct cred *cred, struct files_struct *files); +static inline void aa_free_fperms_table(struct aa_perms *fperms_table) +{ + if (fperms_table) + kvfree(fperms_table); +} + static inline void aa_free_file_rules(struct aa_file_rules *rules) { aa_put_dfa(rules->dfa); aa_free_domain_entries(&rules->trans); + aa_free_fperms_table(rules->fperms_table); } /** |