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31 lines
700 B
Go
31 lines
700 B
Go
// +build selinux,linux
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package selinux
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import (
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"golang.org/x/sys/unix"
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)
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// Returns a []byte slice if the xattr is set and nil otherwise
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// Requires path and its attribute as arguments
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func lgetxattr(path string, attr string) ([]byte, error) {
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// Start with a 128 length byte array
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dest := make([]byte, 128)
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sz, errno := unix.Lgetxattr(path, attr, dest)
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for errno == unix.ERANGE {
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// Buffer too small, use zero-sized buffer to get the actual size
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sz, errno = unix.Lgetxattr(path, attr, []byte{})
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if errno != nil {
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return nil, errno
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}
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dest = make([]byte, sz)
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sz, errno = unix.Lgetxattr(path, attr, dest)
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}
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if errno != nil {
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return nil, errno
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}
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return dest[:sz], nil
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}
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