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authorLuis Chamberlain <mcgrof@kernel.org>2022-07-15 22:16:22 +0300
committerPaul Moore <paul@paul-moore.com>2022-08-26 18:19:43 +0300
commit2a5840124009f133bd09fd855963551fb2cefe22 (patch)
treea5d4322412e3fb7e7b372039fca8fbf6841a8893 /security
parent568035b01cfb107af8d2e4bd2fb9aea22cf5b868 (diff)
downloadlinux-2a5840124009f133bd09fd855963551fb2cefe22.tar.xz
lsm,io_uring: add LSM hooks for the new uring_cmd file op
io-uring cmd support was added through ee692a21e9bf ("fs,io_uring: add infrastructure for uring-cmd"), this extended the struct file_operations to allow a new command which each subsystem can use to enable command passthrough. Add an LSM specific for the command passthrough which enables LSMs to inspect the command details. This was discussed long ago without no clear pointer for something conclusive, so this enables LSMs to at least reject this new file operation. [0] https://lkml.kernel.org/r/8adf55db-7bab-f59d-d612-ed906b948d19@schaufler-ca.com Cc: stable@vger.kernel.org Fixes: ee692a21e9bf ("fs,io_uring: add infrastructure for uring-cmd") Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> Acked-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'security')
-rw-r--r--security/security.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/security/security.c b/security/security.c
index 14d30fec8a00..4b95de24bc8d 100644
--- a/security/security.c
+++ b/security/security.c
@@ -2660,4 +2660,8 @@ int security_uring_sqpoll(void)
{
return call_int_hook(uring_sqpoll, 0);
}
+int security_uring_cmd(struct io_uring_cmd *ioucmd)
+{
+ return call_int_hook(uring_cmd, 0, ioucmd);
+}
#endif /* CONFIG_IO_URING */