Re: [PATCH 1/2] audit: add filtering for io_uring records, addendum
From: Paul Moore <paul@paul-moore.com>
Date: 2021-06-07 23:16:25
Also in:
io-uring, linux-fsdevel, selinux
On Mon, May 31, 2021 at 9:45 AM Richard Guy Briggs [off-list ref] wrote:
The commit ("audit: add filtering for io_uring records") added support for
filtering io_uring operations.
Add checks to the audit io_uring filtering code for directory and path watches,
and to keep the list counts consistent.
Signed-off-by: Richard Guy Briggs <redacted>
---
kernel/audit_tree.c | 3 ++-
kernel/audit_watch.c | 3 ++-
kernel/auditfilter.c | 7 +++++--
3 files changed, 9 insertions(+), 4 deletions(-)Thanks for pointing these omissions out in the original patch. When a patch has obvious problems generally people just provide feedback and the patch author incorporates the fixes; this helps ensure we don't merge known broken patches, helping preserve `git bisect`. Do you mind if I incorporate these suggestions, and the one in patch 2/2, into the filtering patch in the original RFC patchset? I'll add a 'thank you' comment in the commit description as I did to the other patch where you provided feedback. I feel that is the proper way to handle this.
quoted hunk ↗ jump to hunk
diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c index 6c91902f4f45..2be285c2f069 100644 --- a/kernel/audit_tree.c +++ b/kernel/audit_tree.c@@ -727,7 +727,8 @@ int audit_make_tree(struct audit_krule *rule, char *pathname, u32 op) { if (pathname[0] != '/' || - rule->listnr != AUDIT_FILTER_EXIT || + (rule->listnr != AUDIT_FILTER_EXIT && + rule->listnr != AUDIT_FILTER_URING_EXIT) || op != Audit_equal || rule->inode_f || rule->watch || rule->tree) return -EINVAL;diff --git a/kernel/audit_watch.c b/kernel/audit_watch.c index 2acf7ca49154..698b62b4a2ec 100644 --- a/kernel/audit_watch.c +++ b/kernel/audit_watch.c@@ -183,7 +183,8 @@ int audit_to_watch(struct audit_krule *krule, char *path, int len, u32 op) return -EOPNOTSUPP; if (path[0] != '/' || path[len-1] == '/' || - krule->listnr != AUDIT_FILTER_EXIT || + (krule->listnr != AUDIT_FILTER_EXIT && + krule->listnr != AUDIT_FILTER_URING_EXIT) || op != Audit_equal || krule->inode_f || krule->watch || krule->tree) return -EINVAL;diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c index c21119c00504..bcdedfd1088c 100644 --- a/kernel/auditfilter.c +++ b/kernel/auditfilter.c@@ -153,7 +153,8 @@ char *audit_unpack_string(void **bufp, size_t *remain, size_t len) static inline int audit_to_inode(struct audit_krule *krule, struct audit_field *f) { - if (krule->listnr != AUDIT_FILTER_EXIT || + if ((krule->listnr != AUDIT_FILTER_EXIT && + krule->listnr != AUDIT_FILTER_URING_EXIT) || krule->inode_f || krule->watch || krule->tree || (f->op != Audit_equal && f->op != Audit_not_equal)) return -EINVAL;@@ -250,6 +251,7 @@ static inline struct audit_entry *audit_to_entry_common(struct audit_rule_data * pr_err("AUDIT_FILTER_ENTRY is deprecated\n"); goto exit_err; case AUDIT_FILTER_EXIT: + case AUDIT_FILTER_URING_EXIT: case AUDIT_FILTER_TASK: #endif case AUDIT_FILTER_USER:@@ -982,7 +984,8 @@ static inline int audit_add_rule(struct audit_entry *entry) } entry->rule.prio = ~0ULL; - if (entry->rule.listnr == AUDIT_FILTER_EXIT) { + if (entry->rule.listnr == AUDIT_FILTER_EXIT || + entry->rule.listnr == AUDIT_FILTER_URING_EXIT) { if (entry->rule.flags & AUDIT_FILTER_PREPEND) entry->rule.prio = ++prio_high; else --2.27.0
-- paul moore www.paul-moore.com