3 Commits

Author	SHA1	Message	Date
Azeem Shaikh	20d099756b	block: Replace all non-returning strlcpy with strscpy ... strlcpy() reads the entire source buffer first. This read may exceed the destination size limit. This is both inefficient and can lead to linear read overflows if a source string is not NUL-terminated [1]. In an effort to remove strlcpy() completely [2], replace strlcpy() here with strscpy(). No return values were used, so direct replacement is safe. [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy [2] https://github.com/KSPP/linux/issues/89 Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230530155608.272266-1-azeemshaikh38@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>	2023-06-01 09:13:31 -06:00
Michal Koutný	fa7e439cf9	cgroup: Homogenize cgroup_get_from_id() return value ... Cgroup id is user provided datum hence extend its return domain to include possible error reason (similar to cgroup_get_from_fd()). This change also fixes commit d4ccaf58a8 ("bpf: Introduce cgroup iter") that would use NULL instead of proper error handling in d4ccaf58a8 ("bpf: Introduce cgroup iter"). Additionally, neither of: fc_appid_store, bpf_iter_attach_cgroup, mem_cgroup_get_from_ino (callers of cgroup_get_from_fd) is built without CONFIG_CGROUPS (depends via CONFIG_BLK_CGROUP, direct, transitive CONFIG_MEMCG respectively) transitive, so drop the singular definition not needed with !CONFIG_CGROUPS. Fixes: d4ccaf58a8 ("bpf: Introduce cgroup iter") Signed-off-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org>	2022-08-26 10:57:41 -10:00
Christoph Hellwig	db05628435	blk-cgroup: move blkcg_{get,set}_fc_appid out of line ... No need to have these helpers inline. Also remove the stubs and just use an IS_ENABLED for the get side (the set side already is only built conditionlly). Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Tejun Heo <tj@kernel.org> Link: https://lore.kernel.org/r/20220420042723.1010598-5-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>	2022-05-02 14:06:20 -06:00