34 lines
1.1 KiB
Diff
34 lines
1.1 KiB
Diff
From b3108cabb7ff97f8bb8b8398842cb2e8c623664c Mon Sep 17 00:00:00 2001
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From: zgzxx <zhangguangzhi3@huawei.com>
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Date: Wed, 6 Dec 2023 16:13:13 +0800
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Subject: creatfile check op intent value
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---
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observer_agent/ebpf/file_ebpf/file_fentry.bpf.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/observer_agent/ebpf/file_ebpf/file_fentry.bpf.c b/observer_agent/ebpf/file_ebpf/file_fentry.bpf.c
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index 7afb7e2..f4e7e44 100644
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--- a/observer_agent/ebpf/file_ebpf/file_fentry.bpf.c
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+++ b/observer_agent/ebpf/file_ebpf/file_fentry.bpf.c
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@@ -12,6 +12,7 @@
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#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
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#define O_CREAT 100
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+#define LOOKUP_CREATE 0x0200
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char LICENSE[] SEC("license") = "Dual BSD/GPL";
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@@ -107,7 +108,7 @@ int BPF_PROG(do_filp_open_exit, int dfd, struct filename *pathname, const struct
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struct ebpf_event *e = NULL;
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RETURN_ZERO_IF_OURSELF();
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- if (op && !(op->open_flag & O_CREAT))
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+ if (op && (!(op->open_flag & O_CREAT) || !(op->intent & LOOKUP_CREATE)))
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return 0;
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if (!S_ISREG(ret_file->f_inode->i_mode))
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return 0;
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--
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2.33.0
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