| Message ID | 20230316130751.334227-1-omosnace@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [RESEND] fs_context: drop the unused lsm_flags member | expand |
From: Christian Brauner (Microsoft) <brauner@kernel.org> On Thu, 16 Mar 2023 14:07:51 +0100, Ondrej Mosnacek wrote: > This isn't ever used by VFS now, and it couldn't even work. Any FS that > uses the SECURITY_LSM_NATIVE_LABELS flag needs to also process the > value returned back from the LSM, so it needs to do its > security_sb_set_mnt_opts() call on its own anyway. > > Seems indeed unused currently. I don't see fc->lsm_flags being used after having been set. So applied. Please yell, if there's some subtle place where this should matter after all, tree: git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping.git branch: fs.misc [1/1] fs_context: drop the unused lsm_flags member commit: 4e04143c869c5b6d499fbd5083caa860d5c942c3
diff --git a/Documentation/filesystems/mount_api.rst b/Documentation/filesystems/mount_api.rst index 63204d2094fdf..9aaf6ef75eb53 100644 --- a/Documentation/filesystems/mount_api.rst +++ b/Documentation/filesystems/mount_api.rst @@ -79,7 +79,6 @@ context. This is represented by the fs_context structure:: unsigned int sb_flags; unsigned int sb_flags_mask; unsigned int s_iflags; - unsigned int lsm_flags; enum fs_context_purpose purpose:8; ... }; diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 05ae23657527d..397c096d874eb 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -1274,9 +1274,6 @@ int nfs_get_tree_common(struct fs_context *fc) if (ctx->clone_data.sb->s_flags & SB_SYNCHRONOUS) fc->sb_flags |= SB_SYNCHRONOUS; - if (server->caps & NFS_CAP_SECURITY_LABEL) - fc->lsm_flags |= SECURITY_LSM_NATIVE_LABELS; - /* Get a superblock - note that we may end up sharing one that already exists */ fc->s_fs_info = server; s = sget_fc(fc, compare_super, nfs_set_super); diff --git a/include/linux/fs_context.h b/include/linux/fs_context.h index 5469ffee21c73..ff6341e09925b 100644 --- a/include/linux/fs_context.h +++ b/include/linux/fs_context.h @@ -104,7 +104,6 @@ struct fs_context { unsigned int sb_flags; /* Proposed superblock flags (SB_*) */ unsigned int sb_flags_mask; /* Superblock flags that were changed */ unsigned int s_iflags; /* OR'd with sb->s_iflags */ - unsigned int lsm_flags; /* Information flags from the fs to the LSM */ enum fs_context_purpose purpose:8; enum fs_context_phase phase:8; /* The phase the context is in */ bool need_free:1; /* Need to call ops->free() */ diff --git a/include/linux/security.h b/include/linux/security.h index 5984d0d550b41..db9b659b02b91 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -68,7 +68,7 @@ struct watch_notification; /* If capable is being called by a setid function */ #define CAP_OPT_INSETID BIT(2) -/* LSM Agnostic defines for fs_context::lsm_flags */ +/* LSM Agnostic defines for security_sb_set_mnt_opts() flags */ #define SECURITY_LSM_NATIVE_LABELS 1 struct ctl_table;
This isn't ever used by VFS now, and it couldn't even work. Any FS that uses the SECURITY_LSM_NATIVE_LABELS flag needs to also process the value returned back from the LSM, so it needs to do its security_sb_set_mnt_opts() call on its own anyway. Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com> --- Resending because of no response for almost 2 years... Previous submission: https://lore.kernel.org/linux-fsdevel/20210409111234.271707-1-omosnace@redhat.com/ Documentation/filesystems/mount_api.rst | 1 - fs/nfs/super.c | 3 --- include/linux/fs_context.h | 1 - include/linux/security.h | 2 +- 4 files changed, 1 insertion(+), 6 deletions(-)