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| author | Christian Brauner <brauner@kernel.org> | 2026-10-12 10:58:36 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2026-10-12 10:58:36 +0200 |
| commit | 96bd708bdab49bea550070d935198ad4f2028a73 (patch) | |
| tree | 5d2aafa00da31c5e3edd3133addf0894069f9ef5 /tools/lib/python | |
| parent | 24a19b953e2a3d0ea5a8c4951a0ab8f32720c907 (diff) | |
| parent | 1f47b275d5d5aca297ef66a438f160a904789699 (diff) | |
| download | linux-next-96bd708bdab49bea550070d935198ad4f2028a73.tar.gz linux-next-96bd708bdab49bea550070d935198ad4f2028a73.zip | |
Merge patch series "net: support thread-specific pidfds for send and connect"
Andrew Halaney <andrew@amutable.com> says:
SO_PASSPIDFD/SCM_PIDFD and SO_PEERPIDFD allow to retrieve a pidfd for
the thread-group leader. The coredump server using the coredump socket
cannot get a handle on the task that took the signal and is writing the
coredump easily. Workloads interested in per-thread authentification
have similar problems.
Add SO_PASSPIDFD_THREAD/SCM_PIDFD_THREAD and SO_PEERPIDFD_THREAD. We
record the sending and the connecting thread in addition to the
thread-group leader.
SO_PASSPIDFD_THREAD functions like SO_PASSPIDFD but instead of an
SCM_PIDFD message for the thread-group leader, SCM_PIDFD_THREAD sends a
pidfd for the specific thread. SO_PASSPIDFD / SO_PASSPIDFD_THREAD are
independent, allowing callers to get both styles of pidfd back in their
cmsg.
SO_PEERPIDFD_THREAD allows to retrieve a pidfd for the specific thread
that called connect(), listen(), or socketpair().
pidfs_coredump() now also stamps the dumping thread's struct pid so a
pidfd for that thread reports the coredump like the pidfd of the
thread-group leader does.
* patches from https://patch.msgid.link/20261005-work-unix-passpidfd-v4-0-350183b6e02a@amutable.com:
selftests/coredump: check the dumping thread's pidfd
pidfs: record the coredump on the dumping thread's pid too
selftests/net: SO_PEERPIDFD_THREAD
net: add SO_PEERPIDFD_THREAD to get a thread-specific pidfd
af_unix: record the pid of the connecting thread
net: turn sk_peer_pid into an array indexed by pid type
selftests/net: SO_PASSPIDFD_THREAD
net: add SO_PASSPIDFD_THREAD to get a thread-specific SCM_PIDFD
af_unix: record the pid of the sending thread
pid: add helpers to operate on a struct pid array
Link: https://patch.msgid.link/20261005-work-unix-passpidfd-v4-0-350183b6e02a@amutable.com
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Diffstat (limited to 'tools/lib/python')
| -rw-r--r-- | tools/lib/python/kdoc/xforms_lists.py | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/lib/python/kdoc/xforms_lists.py b/tools/lib/python/kdoc/xforms_lists.py index e3dda2fe8a53..e792785a15ec 100644 --- a/tools/lib/python/kdoc/xforms_lists.py +++ b/tools/lib/python/kdoc/xforms_lists.py @@ -45,6 +45,7 @@ class CTransforms: (CMatch("DECLARE_HASHTABLE"), r"unsigned long \1[1 << ((\2) - 1)]"), (CMatch("DECLARE_KFIFO"), r"\2 *\1"), (CMatch("DECLARE_KFIFO_PTR"), r"\2 *\1"), + (CMatch("DECLARE_PIDS"), r"struct pid *\1[(\2) + 1]"), (CMatch("(?:__)?DECLARE_FLEX_ARRAY"), r"\1 \2[]"), (CMatch("DEFINE_DMA_UNMAP_ADDR"), r"dma_addr_t \1"), (CMatch("DEFINE_DMA_UNMAP_LEN"), r"__u32 \1"), |