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525a177c16
A uzip image has a 128-byte header, historically, this header could be executed as a shell script to mount the uzip image to a user provided mountpoint. The embedded shell commands only work for uzip images that were created with zlib or zstd compression that contained an ISO-9660 file system. Given the limited space available in the uzip header, it is not practical to extend this feature to include other file systems or to provide sensible error handling and error messages to the user. For these reasons, abandon the embedded shell script in the uzip image header. To maintain backwards compatibility, the shebang and shell must reside in the 128-byte header. This change of behavior is documented in mkuzip(8) and an example has been provided for creating/mounting uzip images. PR: 276174
34 lines
1.6 KiB
C
34 lines
1.6 KiB
C
/*
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* Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#define DEFAULT_SUFX_ZLIB ".uzip"
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#define CLOOP_MAGIC_ZLIB "#!/bin/sh\n#V2.0 Format\n"
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size_t mkuz_zlib_cbound(size_t);
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void *mkuz_zlib_init(int *);
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void mkuz_zlib_compress(void *, const struct mkuz_blk *, struct mkuz_blk *);
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