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umd: Stop using split_argv
There is exactly one argument so there is nothing to split. All split_argv does now is cause confusion and avoid the need for a cast when passing a "const char *" string to call_usermodehelper_setup. So avoid confusion and the possibility of an odd driver name causing problems by just using a fixed argv array with a cast in the call to call_usermodehelper_setup. v1: https://lkml.kernel.org/r/87sged3a9n.fsf_-_@x220.int.ebiederm.org Link: https://lkml.kernel.org/r/20200702164140.4468-16-ebiederm@xmission.com Acked-by: Alexei Starovoitov <ast@kernel.org> Tested-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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parent
8c2f526639
commit
33c326014f
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@ -160,27 +160,21 @@ static void umd_cleanup(struct subprocess_info *info)
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int fork_usermode_driver(struct umd_info *info)
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{
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struct subprocess_info *sub_info;
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char **argv = NULL;
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const char *argv[] = { info->driver_name, NULL };
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int err;
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if (WARN_ON_ONCE(info->tgid))
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return -EBUSY;
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err = -ENOMEM;
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argv = argv_split(GFP_KERNEL, info->driver_name, NULL);
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if (!argv)
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goto out;
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sub_info = call_usermodehelper_setup(info->driver_name, argv, NULL,
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GFP_KERNEL,
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sub_info = call_usermodehelper_setup(info->driver_name,
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(char **)argv, NULL, GFP_KERNEL,
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umd_setup, umd_cleanup, info);
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if (!sub_info)
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goto out;
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err = call_usermodehelper_exec(sub_info, UMH_WAIT_EXEC);
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out:
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if (argv)
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argv_free(argv);
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return err;
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}
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EXPORT_SYMBOL_GPL(fork_usermode_driver);
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