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libc: print unknown fcntl command in hex
This skimps the manual conversion step and eases diagnostic operations. Issue #5167.
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@ -2066,7 +2066,7 @@ int Libc::Vfs_plugin::fcntl(File_descriptor *fd, int cmd, long arg)
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break;
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}
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error("fcntl(): command ", cmd, " not supported - vfs");
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error("fcntl(): command ", Hex(cmd), " not supported - vfs");
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return Errno(EINVAL);
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}
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