Pull fsnotify updates from Jan Kara: "Support for auditing decisions regarding fanotify permission events" * tag 'fsnotify_for_v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: fanotify,audit: Allow audit to use the full permission event response fanotify: define struct members to hold response decision context fanotify: Ensure consistent variable type for response
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| @@ -188,15 +188,43 @@ struct fanotify_event_info_error { · 187 unmodified lines | ||
| 188 | 188 | __u32 error_count; |
| 189 | 189 | }; |
| 190 | 190 | |
| 191 | +/* | |
| 192 | + * User space may need to record additional information about its decision. | |
| 193 | + * The extra information type records what kind of information is included. | |
| 194 | + * The default is none. We also define an extra information buffer whose | |
| 195 | + * size is determined by the extra information type. | |
| 196 | + * | |
| 197 | + * If the information type is Audit Rule, then the information following | |
| 198 | + * is the rule number that triggered the user space decision that | |
| 199 | + * requires auditing. | |
| 200 | + */ | |
| 201 | + | |
| 202 | +#define FAN_RESPONSE_INFO_NONE 0 | |
| 203 | +#define FAN_RESPONSE_INFO_AUDIT_RULE 1 | |
| 204 | + | |
| 191 | 205 | struct fanotify_response { |
| 192 | 206 | __s32 fd; |
| 193 | 207 | __u32 response; |
| 194 | 208 | }; |
| 195 | 209 | |
| 210 | +struct fanotify_response_info_header { | |
| 211 | + __u8 type; | |
| 212 | + __u8 pad; | |
| 213 | + __u16 len; | |
| 214 | +}; | |
| 215 | + | |
| 216 | +struct fanotify_response_info_audit_rule { | |
| 217 | + struct fanotify_response_info_header hdr; | |
| 218 | + __u32 rule_number; | |
| 219 | + __u32 subj_trust; | |
| 220 | + __u32 obj_trust; | |
| 221 | +}; | |
| 222 | + | |
| 196 | 223 | /* Legit userspace responses to a _PERM event */ |
| 197 | 224 | #define FAN_ALLOW 0x01 |
| 198 | 225 | #define FAN_DENY 0x02 |
| 199 | −#define FAN_AUDIT 0x10 /* Bit mask to create audit record for result */ | |
| 226 | +#define FAN_AUDIT 0x10 /* Bitmask to create audit record for result */ | |
| 227 | +#define FAN_INFO 0x20 /* Bitmask to indicate additional information */ | |
| 200 | 228 | |
| 201 | 229 | /* No fd set in event */ |
| 202 | 230 | #define FAN_NOFD -1 |