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| author | Richard Guy Briggs <rgb@redhat.com> | 2021-05-19 22:00:22 +0200 |
|---|---|---|
| committer | Paul Moore <paul@paul-moore.com> | 2021-10-04 18:09:27 +0200 |
| commit | 571e5c0efcb29c5dac8cf2949d3eed84ec43056c (patch) | |
| tree | 6ad3d7bc38e60d5478c64e87846808c2e46bd906 /kernel/auditsc.c | |
| parent | audit: add support for the openat2 syscall (diff) | |
| download | linux-571e5c0efcb29c5dac8cf2949d3eed84ec43056c.tar.xz linux-571e5c0efcb29c5dac8cf2949d3eed84ec43056c.zip | |
audit: add OPENAT2 record to list "how" info
Since the openat2(2) syscall uses a struct open_how pointer to communicate
its parameters they are not usefully recorded by the audit SYSCALL record's
four existing arguments.
Add a new audit record type OPENAT2 that reports the parameters in its
third argument, struct open_how with fields oflag, mode and resolve.
The new record in the context of an event would look like:
time->Wed Mar 17 16:28:53 2021
type=PROCTITLE msg=audit(1616012933.531:184): proctitle=
73797363616C6C735F66696C652F6F70656E617432002F746D702F61756469742D
7465737473756974652D737641440066696C652D6F70656E617432
type=PATH msg=audit(1616012933.531:184): item=1 name="file-openat2"
inode=29 dev=00:1f mode=0100600 ouid=0 ogid=0 rdev=00:00
obj=unconfined_u:object_r:user_tmp_t:s0 nametype=CREATE
cap_fp=0 cap_fi=0 cap_fe=0 cap_fver=0 cap_frootid=0
type=PATH msg=audit(1616012933.531:184):
item=0 name="/root/rgb/git/audit-testsuite/tests"
inode=25 dev=00:1f mode=040700 ouid=0 ogid=0 rdev=00:00
obj=unconfined_u:object_r:user_tmp_t:s0 nametype=PARENT
cap_fp=0 cap_fi=0 cap_fe=0 cap_fver=0 cap_frootid=0
type=CWD msg=audit(1616012933.531:184):
cwd="/root/rgb/git/audit-testsuite/tests"
type=OPENAT2 msg=audit(1616012933.531:184):
oflag=0100302 mode=0600 resolve=0xa
type=SYSCALL msg=audit(1616012933.531:184): arch=c000003e syscall=437
success=yes exit=4 a0=3 a1=7ffe315f1c53 a2=7ffe315f1550 a3=18
items=2 ppid=528 pid=540 auid=0 uid=0 gid=0 euid=0 suid=0
fsuid=0 egid=0 sgid=0 fsgid=0 tty=ttyS0 ses=1 comm="openat2"
exe="/root/rgb/git/audit-testsuite/tests/syscalls_file/openat2"
subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
key="testsuite-1616012933-bjAUcEPO"
Link: https://lore.kernel.org/r/d23fbb89186754487850367224b060e26f9b7181.1621363275.git.rgb@redhat.com
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
[PM: tweak subject, wrap example, move AUDIT_OPENAT2 to 1337]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'kernel/auditsc.c')
| -rw-r--r-- | kernel/auditsc.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 8c4335a35274..a4ba53f5354e 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -63,7 +63,7 @@ #include <linux/fsnotify_backend.h> #include <uapi/linux/limits.h> #include <uapi/linux/netfilter/nf_tables.h> -#include <uapi/linux/openat2.h> +#include <uapi/linux/openat2.h> // struct open_how #include "audit.h" @@ -1306,6 +1306,12 @@ static void show_special(struct audit_context *context, int *call_panic) audit_log_format(ab, "fd=%d flags=0x%x", context->mmap.fd, context->mmap.flags); break; + case AUDIT_OPENAT2: + audit_log_format(ab, "oflag=0%llo mode=0%llo resolve=0x%llx", + context->openat2.flags, + context->openat2.mode, + context->openat2.resolve); + break; case AUDIT_EXECVE: audit_log_execve_info(context, &ab); break; @@ -2536,6 +2542,16 @@ void __audit_mmap_fd(int fd, int flags) context->type = AUDIT_MMAP; } +void __audit_openat2_how(struct open_how *how) +{ + struct audit_context *context = audit_context(); + + context->openat2.flags = how->flags; + context->openat2.mode = how->mode; + context->openat2.resolve = how->resolve; + context->type = AUDIT_OPENAT2; +} + void __audit_log_kern_module(char *name) { struct audit_context *context = audit_context(); |