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fs: fsconfig: intercept non-new mount API in advance for FSCONFIG_CMD_CREATE_EXCL command

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fsconfig with FSCONFIG_CMD_CREATE_EXCL command requires the new mount api,
here we should return -EOPNOTSUPP in advance to avoid extra procedure.

Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Link: https://lore.kernel.org/r/20240522030422.315892-1-lihongbo22@huawei.com
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Hongbo Li 2024-05-22 11:04:22 +08:00 committed by Christian Brauner
parent 3aa63a569c
commit ef44c8ab06
1 changed files with 1 additions and 4 deletions
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5
fs/fsopen.c
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@ -220,10 +220,6 @@ static int vfs_cmd_create(struct fs_context *fc, bool exclusive)
if (!mount_capable(fc)) if (!mount_capable(fc))
return -EPERM; return -EPERM;
/* require the new mount api */
if (exclusive && fc->ops == &legacy_fs_context_ops)
return -EOPNOTSUPP;
fc->phase = FS_CONTEXT_CREATING; fc->phase = FS_CONTEXT_CREATING;
fc->exclusive = exclusive; fc->exclusive = exclusive;
@ -411,6 +407,7 @@ SYSCALL_DEFINE5(fsconfig,
case FSCONFIG_SET_PATH: case FSCONFIG_SET_PATH:
case FSCONFIG_SET_PATH_EMPTY: case FSCONFIG_SET_PATH_EMPTY:
case FSCONFIG_SET_FD: case FSCONFIG_SET_FD:
case FSCONFIG_CMD_CREATE_EXCL:
ret = -EOPNOTSUPP; ret = -EOPNOTSUPP;
goto out_f; goto out_f;
} }