kernel/linux.git/include/linux/cred.h, branch v6.18.21

copy_process: pass clone_flags as u64 across calltree

2025-09-01T13:31:34+00:00

With the introduction of clone3 in commit 7f192e3cd316 ("fork: add clone3") the effective bit width of clone_flags on all architectures was increased from 32-bit to 64-bit, with a new type of u64 for the flags. However, for most consumers of clone_flags the interface was not changed from the previous type of unsigned long. While this works fine as long as none of the new 64-bit flag bits (CLONE_CLEAR_SIGHAND and CLONE_INTO_CGROUP) are evaluated, this is still undesirable in terms of the principle of least surprise. Thus, this commit fixes all relevant interfaces of callees to sys_clone3/copy_process (excluding the architecture-specific copy_thread) to consistently pass clone_flags as u64, so that no truncation to 32-bit integers occurs on 32-bit architectures. Signed-off-by: Simon Schuster Link: https://lore.kernel.org/20250901-nios2-implement-clone3-v2-2-53fcf5577d57@siemens-energy.com Acked-by: David Hildenbrand Reviewed-by: Lorenzo Stoakes Reviewed-by: Arnd Bergmann Signed-off-by: Christian Brauner

cred: add auto cleanup method

2025-07-07T10:24:50+00:00

Add a simple auto cleanup method for struct cred. Link: https://lore.kernel.org/20250612-work-coredump-massage-v1-19-315c0c34ba94@kernel.org Signed-off-by: Christian Brauner

cred: Fix RCU warnings in override/revert_creds

2025-03-02T11:57:37+00:00

Fix RCU warnings in override_creds and revert_creds by turning the RCU pointer into a normal pointer using rcu_replace_pointer. These warnings were previously private to the cred code, but due to the move into the header file they are now polluting unrelated subsystems. Fixes: 49dffdfde462 ("cred: Add a light version of override/revert_creds()") Signed-off-by: Herbert Xu Link: https://lore.kernel.org/r/Z8QGQGW0IaSklKG7@gondor.apana.org.au Signed-off-by: Christian Brauner

cred: fold get_new_cred_many() into get_cred_many()

2024-12-02T10:25:15+00:00

There's no need for this to be a separate helper. Link: https://lore.kernel.org/r/20241126-zaunpfahl-wovon-c3979b990a63@brauner Reviewed-by: Jens Axboe Signed-off-by: Christian Brauner

cred: remove unused get_new_cred()

2024-12-02T10:25:14+00:00

This helper is not used anymore so remove it. Link: https://lore.kernel.org/r/20241125-work-cred-v2-29-68b9d38bb5b2@kernel.org Reviewed-by: Jeff Layton Reviewed-by: Jens Axboe Signed-off-by: Christian Brauner

tree-wide: s/revert_creds_light()/revert_creds()/g

2024-12-02T10:25:09+00:00

Rename all calls to revert_creds_light() back to revert_creds(). Link: https://lore.kernel.org/r/20241125-work-cred-v2-6-68b9d38bb5b2@kernel.org Reviewed-by: Jeff Layton Reviewed-by: Jens Axboe Signed-off-by: Christian Brauner

tree-wide: s/override_creds_light()/override_creds()/g

2024-12-02T10:25:09+00:00

Rename all calls to override_creds_light() back to overrid_creds(). Link: https://lore.kernel.org/r/20241125-work-cred-v2-5-68b9d38bb5b2@kernel.org Reviewed-by: Jeff Layton Reviewed-by: Jens Axboe Signed-off-by: Christian Brauner

cred: remove old {override,revert}_creds() helpers

2024-12-02T10:25:09+00:00

They are now unused. Link: https://lore.kernel.org/r/20241125-work-cred-v2-4-68b9d38bb5b2@kernel.org Reviewed-by: Jeff Layton Reviewed-by: Jens Axboe Signed-off-by: Christian Brauner

cred: return old creds from revert_creds_light()

2024-12-02T10:25:08+00:00

So we can easily convert revert_creds() callers over to drop the reference count explicitly. Link: https://lore.kernel.org/r/20241125-work-cred-v2-2-68b9d38bb5b2@kernel.org Reviewed-by: Jeff Layton Reviewed-by: Jens Axboe Signed-off-by: Christian Brauner

tree-wide: s/override_creds()/override_creds_light(get_new_cred())/g

2024-12-02T10:25:08+00:00

Convert all callers from override_creds() to override_creds_light(get_new_cred()) in preparation of making override_creds() not take a separate reference at all. Link: https://lore.kernel.org/r/20241125-work-cred-v2-1-68b9d38bb5b2@kernel.org Reviewed-by: Jeff Layton Reviewed-by: Jens Axboe Signed-off-by: Christian Brauner