bpf: Add bpf_copy_from_user_task_str kfunc #8326
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added 2 commits
January 8, 2025 09:44
This new kfunc will be able to copy a string from another process's/task's address space. This is similar to `bpf_copy_from_user_str` but accepts a `struct task_struct*` argument. This required adding an additional function in memory.c, namely `copy_str_from_process_vm`, which works similar to `access_process_vm` but utilizes the `strncpy_from_user` helper and only supports reading/copying and not writing. Signed-off-by: Jordan Rome <[email protected]>
This adds tests for both the happy path and the error path (with and without the BPF_F_PAD_ZEROS flag). Signed-off-by: Jordan Rome <[email protected]>
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At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=922717 expired. Closing PR. |
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Pull request for series with
subject: bpf: Add bpf_copy_from_user_task_str kfunc
version: 2
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=922717