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Some of the on-disk format internals are moved to a separate header
and some of the stuff from internal.h is moved to that format header.
C++ guards are added in addtion.
Everything PAX related is moved to pax_header.c, some internal
functions are marked as static.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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This is a fully automated search and replace, i.e. I ran this:
git grep -l uint8_t | xargs sed -i 's/uint8_t/sqfs_u8/g'
git grep -l uint16_t | xargs sed -i 's/uint16_t/sqfs_u16/g'
git grep -l uint32_t | xargs sed -i 's/uint32_t/sqfs_u32/g'
git grep -l uint64_t | xargs sed -i 's/uint64_t/sqfs_u64/g'
git grep -l int8_t | xargs sed -i 's/int8_t/sqfs_s8/g'
git grep -l int16_t | xargs sed -i 's/int16_t/sqfs_s16/g'
git grep -l int32_t | xargs sed -i 's/int32_t/sqfs_s32/g'
git grep -l int64_t | xargs sed -i 's/int64_t/sqfs_s64/g'
and than added the appropriate definitions to sqfs/predef.h
The whole point being better compatibillity with platforms that may
not have an stdint.h with the propper definitions.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Requires that config.h be included before other headers, since the macro
_FILE_OFFSET_BITS changes the definitions of things like 'struct stat'.
I chose to simply include it at the top of every C file and at
immediately after the double-inclusion guards of every header.
Signed-off-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Until now, the tar checksum verification simply copied the header,
recomputed the checksum and compared it byte-for-byte with the
original.
However, not all implementations store the checksum the same way. For
instance, git-archive generates tar balls that use the same format as
for other octal numbers.
This patch makes the checksum verification more lenient by parsing the
checksum from the header and comparing it with the computed value
instead of copying the entire block and insisting on byte-for-byte
equivalence.
The result is better interoperabillity with existing tools and perhaps
slightly faster processing since the block doesn't have to be copied.
Reported-by: Matt Turner <mattst88@gmail.com>
Suggested-by: René Scharfe <l.s.r@web.de>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Some experiments seem to indicate that the various GNU extensions are
more widely supported than their POSIX equivalents[1]. Possibly because
they are easier to implement and possibly because of the wide spread
use of GNU tar.
This commit replaces the PAX writer in the write_tar_header implementation
with a GNU extension based writer.
The writer is also cleaned up by removing all global state. The record
counter is moved outside into the tar2sqfs program and passed in as
function argument.
[1] https://dev.gentoo.org/~mgorny/articles/portability-of-tar-features.html
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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This commit attempts to split some of the monolitic tar parsing code up
into multiple functions in seperate files. Also, some code duplication
(like reading a record into memory which was implemented twice) is
removed.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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