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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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This might be needed externally for things like hard link detection.
For the unix implementation, store the actual inode number here.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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To the sqfs_data_reader_t is added, an sqfs_istream_t implementation
that internally reads through the data reader. The uses of the
data_reader_dump function are removed and the function is subsequently
removed from libcommon.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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The recursive part and the filter part are split up, the recursive
iterator wrapper is moved into libsquashfs and the libio iterator
is modified to use that internally instead of implementig the
recursion step.
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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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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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Using --exclude or -E it is now possible to exclude
files from the input tar stream.
The options can be used multiple times.
Signed-off-by: Richard Weinberger <richard@nod.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Exact operation performed:
git ls-files -z | \
xargs -0 sed -i -e 's/dir_entry_t/sqfs_dir_entry_t/g
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Exact operation performed:
git ls-files -z | \
xargs -0 sed -i -e 's/sqfs_dir_entry_t/sqfs_dir_node_t/g'
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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There are several ad-hoc int/uint parsers scattered around the code,
add a single helper function for that task and replace the multiple
instances. A simple white-box test case is added for the utility
function.
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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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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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Start with a common prefix "sqfs_native_file_*"
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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It is mainly a very thin wrapper on top of the block processor so far.
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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By adding additional close/duplicate primitives, the remaining, mostly
identical istream/ostream/file code is mostly identical between Windows
and Unix and be merged, mostly without stitches.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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On Unix like OSes, this saves/restores errno, on Windows both errno
and GetLastError state are saved/restored.
This should make it simpler to preserve that across function calls.
Additionally, while tracking down uses of GetLastError, some places
where the error code was printed out directly where replaced with
instances of w32_perror.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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- The ostream creation functions already have flag arguments,
but make them an sqfs_u32 instead of int.
- Add flag arguments to the istream functions, sanitzie and forward
them when opening the handle.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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When dropping the parent iterator, update the state _first_.
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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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Report an error number from the implementations, change the users to
forward that error number (which also means libtar write header/link
now returns an error code) and all subsequent binaries to use
sqfs_perror() instead of relying on the function to print an error
internally.
Also, make sure to preserve errno/GetLastError() in the implementations
and print out a stringified error in sqfs_perror() if the error code
indicates an I/O error.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Having a function to interpret the flags and open a native file handle
simplifies the istream/ostream/file code which shares that decoding
part, particularly on windows where the character set needs to be
transformed.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Similar to the sqfs_istream_t & sqfs_ostream_t interfaces.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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For now, only the interfaces and helper functions are moved, the
concrete implementations remain in libio.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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istream_t becomes sqfs_istream_t and ostream_t becomes sqfs_ostream_t
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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Instead of "open sparse", make that the default and turn it into
a "no sparse" flag.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Instead of a separate append-sparse function, simply accept NULL
as an input for append. For both Unix and Win32, a fallback needs
to be implemented. For XFRM, we can just memset the input buffer
to zero, same for the libsquashfs data writer.
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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For the backends, this simplifies the code as both paths (open file
and open stdio) use the same basic code. Even when merging them only
in the backend, it would be done in a similar way. Making the
functions public allows other uses as well.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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- Reorder dependencies for tar2sqfs
- Fix istream_t implementation issue
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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Since the user has to call istream_get_buffered_data afterwards anyway,
we can do the precache lazily.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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This properly maps to all of our use cases and makes istream_precache
obsolete.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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As soon as we no longer have any data to read, unlock/drop the
parent iterator_t object. Also, make sure we get the buffer
count right, not all data might have been consumed yet when
precache is called. Remove the precache/read loop in the non-sparse
case, we have already established that there is data available. If
it is insufficient, the user will simply call precache again once
it's used up, which istream_get_buffered_data forwards to a precache
call in the underlying stream.
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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Instead, go through helper functions, which in a next step can be
moved inside the implementation.
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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The common pattern is used in rdsquashfs and sqfs2tar, move the code
to libsquashfs.
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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The structure and functions are renamed to sqfs_xattr_* instead,
an additional helper is added to accept an encoded xattr.
Documentation and unit test are added as well.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Remove redundant initializations, reduce variable scope. At exist of
the function, try to shrink the buffer to the actual size if it got
trimmed.
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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The istream_get_line function is supposed to remove the line break,
inclduing CR+LF if used. The previous implementation simply checked
the buffer when the LF was found, missing the case where the CR was
alraedy added and the LF is at the beginning of the newly loaded
data.
This commit modifies the check to inspect the line itself when it
was found, and remove the CR after the fact.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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