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Diffstat (limited to 'kernel/auditfilter.c')
-rw-r--r--kernel/auditfilter.c83
1 files changed, 46 insertions, 37 deletions
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index cd4f41397c7e..a71ff9965cba 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -434,6 +434,7 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
bufp = data->buf;
for (i = 0; i < data->field_count; i++) {
struct audit_field *f = &entry->rule.fields[i];
+ u32 f_val;
err = -EINVAL;
@@ -442,12 +443,12 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
goto exit_free;
f->type = data->fields[i];
- f->val = data->values[i];
+ f_val = data->values[i];
/* Support legacy tests for a valid loginuid */
- if ((f->type == AUDIT_LOGINUID) && (f->val == AUDIT_UID_UNSET)) {
+ if ((f->type == AUDIT_LOGINUID) && (f_val == AUDIT_UID_UNSET)) {
f->type = AUDIT_LOGINUID_SET;
- f->val = 0;
+ f_val = 0;
entry->rule.pflags |= AUDIT_LOGINUID_LEGACY;
}
@@ -463,7 +464,7 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
case AUDIT_SUID:
case AUDIT_FSUID:
case AUDIT_OBJ_UID:
- f->uid = make_kuid(current_user_ns(), f->val);
+ f->uid = make_kuid(current_user_ns(), f_val);
if (!uid_valid(f->uid))
goto exit_free;
break;
@@ -472,11 +473,12 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
case AUDIT_SGID:
case AUDIT_FSGID:
case AUDIT_OBJ_GID:
- f->gid = make_kgid(current_user_ns(), f->val);
+ f->gid = make_kgid(current_user_ns(), f_val);
if (!gid_valid(f->gid))
goto exit_free;
break;
case AUDIT_ARCH:
+ f->val = f_val;
entry->rule.arch_f = f;
break;
case AUDIT_SUBJ_USER:
@@ -489,11 +491,13 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
case AUDIT_OBJ_TYPE:
case AUDIT_OBJ_LEV_LOW:
case AUDIT_OBJ_LEV_HIGH:
- str = audit_unpack_string(&bufp, &remain, f->val);
- if (IS_ERR(str))
+ str = audit_unpack_string(&bufp, &remain, f_val);
+ if (IS_ERR(str)) {
+ err = PTR_ERR(str);
goto exit_free;
- entry->rule.buflen += f->val;
-
+ }
+ entry->rule.buflen += f_val;
+ f->lsm_str = str;
err = security_audit_rule_init(f->type, f->op, str,
(void **)&f->lsm_rule);
/* Keep currently invalid fields around in case they
@@ -502,68 +506,71 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
pr_warn("audit rule for LSM \'%s\' is invalid\n",
str);
err = 0;
- }
- if (err) {
- kfree(str);
+ } else if (err)
goto exit_free;
- } else
- f->lsm_str = str;
break;
case AUDIT_WATCH:
- str = audit_unpack_string(&bufp, &remain, f->val);
- if (IS_ERR(str))
+ str = audit_unpack_string(&bufp, &remain, f_val);
+ if (IS_ERR(str)) {
+ err = PTR_ERR(str);
goto exit_free;
- entry->rule.buflen += f->val;
-
- err = audit_to_watch(&entry->rule, str, f->val, f->op);
+ }
+ err = audit_to_watch(&entry->rule, str, f_val, f->op);
if (err) {
kfree(str);
goto exit_free;
}
+ entry->rule.buflen += f_val;
break;
case AUDIT_DIR:
- str = audit_unpack_string(&bufp, &remain, f->val);
- if (IS_ERR(str))
+ str = audit_unpack_string(&bufp, &remain, f_val);
+ if (IS_ERR(str)) {
+ err = PTR_ERR(str);
goto exit_free;
- entry->rule.buflen += f->val;
-
+ }
err = audit_make_tree(&entry->rule, str, f->op);
kfree(str);
if (err)
goto exit_free;
+ entry->rule.buflen += f_val;
break;
case AUDIT_INODE:
+ f->val = f_val;
err = audit_to_inode(&entry->rule, f);
if (err)
goto exit_free;
break;
case AUDIT_FILTERKEY:
- if (entry->rule.filterkey || f->val > AUDIT_MAX_KEY_LEN)
+ if (entry->rule.filterkey || f_val > AUDIT_MAX_KEY_LEN)
goto exit_free;
- str = audit_unpack_string(&bufp, &remain, f->val);
- if (IS_ERR(str))
+ str = audit_unpack_string(&bufp, &remain, f_val);
+ if (IS_ERR(str)) {
+ err = PTR_ERR(str);
goto exit_free;
- entry->rule.buflen += f->val;
+ }
+ entry->rule.buflen += f_val;
entry->rule.filterkey = str;
break;
case AUDIT_EXE:
- if (entry->rule.exe || f->val > PATH_MAX)
+ if (entry->rule.exe || f_val > PATH_MAX)
goto exit_free;
- str = audit_unpack_string(&bufp, &remain, f->val);
+ str = audit_unpack_string(&bufp, &remain, f_val);
if (IS_ERR(str)) {
err = PTR_ERR(str);
goto exit_free;
}
- entry->rule.buflen += f->val;
-
- audit_mark = audit_alloc_mark(&entry->rule, str, f->val);
+ audit_mark = audit_alloc_mark(&entry->rule, str, f_val);
if (IS_ERR(audit_mark)) {
kfree(str);
err = PTR_ERR(audit_mark);
goto exit_free;
}
+ entry->rule.buflen += f_val;
entry->rule.exe = audit_mark;
break;
+ default:
+ f->val = f_val;
+ break;
}
}
@@ -1095,22 +1102,24 @@ int audit_rule_change(int type, __u32 portid, int seq, void *data,
int err = 0;
struct audit_entry *entry;
- entry = audit_data_to_entry(data, datasz);
- if (IS_ERR(entry))
- return PTR_ERR(entry);
-
switch (type) {
case AUDIT_ADD_RULE:
+ entry = audit_data_to_entry(data, datasz);
+ if (IS_ERR(entry))
+ return PTR_ERR(entry);
err = audit_add_rule(entry);
audit_log_rule_change("add_rule", &entry->rule, !err);
break;
case AUDIT_DEL_RULE:
+ entry = audit_data_to_entry(data, datasz);
+ if (IS_ERR(entry))
+ return PTR_ERR(entry);
err = audit_del_rule(entry);
audit_log_rule_change("remove_rule", &entry->rule, !err);
break;
default:
- err = -EINVAL;
WARN_ON(1);
+ return -EINVAL;
}
if (err || type == AUDIT_DEL_RULE) {
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-01 18:40:26 +0000