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author | Paul Moore <paul@paul-moore.com> | 2021-02-16 19:46:48 -0500 |
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committer | Paul Moore <paul@paul-moore.com> | 2021-09-19 22:10:44 -0400 |
commit | 5bd2182d58e9d9c6279b7a8a2f9b41add0e7f9cb (patch) | |
tree | 8379b5d74f9451d64246386513135e62b4a37efa /kernel/audit.h | |
parent | 12c5e81d3fd0a690c49dfe1c3a99bf80a24075c7 (diff) | |
download | linux-5bd2182d58e9d9c6279b7a8a2f9b41add0e7f9cb.tar.bz2 |
audit,io_uring,io-wq: add some basic audit support to io_uring
This patch adds basic auditing to io_uring operations, regardless of
their context. This is accomplished by allocating audit_context
structures for the io-wq worker and io_uring SQPOLL kernel threads
as well as explicitly auditing the io_uring operations in
io_issue_sqe(). Individual io_uring operations can bypass auditing
through the "audit_skip" field in the struct io_op_def definition for
the operation; although great care must be taken so that security
relevant io_uring operations do not bypass auditing; please contact
the audit mailing list (see the MAINTAINERS file) with any questions.
The io_uring operations are audited using a new AUDIT_URINGOP record,
an example is shown below:
type=UNKNOWN[1336] msg=audit(1631800225.981:37289):
uring_op=19 success=yes exit=0 items=0 ppid=15454 pid=15681
uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0
subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
key=(null)
Thanks to Richard Guy Briggs for review and feedback.
Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'kernel/audit.h')
-rw-r--r-- | kernel/audit.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/audit.h b/kernel/audit.h index 13abc48de0bd..d1161e3b83e2 100644 --- a/kernel/audit.h +++ b/kernel/audit.h @@ -103,10 +103,12 @@ struct audit_context { enum { AUDIT_CTX_UNUSED, /* audit_context is currently unused */ AUDIT_CTX_SYSCALL, /* in use by syscall */ + AUDIT_CTX_URING, /* in use by io_uring */ } context; enum audit_state state, current_state; unsigned int serial; /* serial number for record */ int major; /* syscall number */ + int uring_op; /* uring operation */ struct timespec64 ctime; /* time of syscall entry */ unsigned long argv[4]; /* syscall arguments */ long return_code;/* syscall return code */ |