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The idea is to iterate over a (canonicalized) path with forward
slashes by components, i.e. file and directory names. Each name
is then looked at by iterating over components, i.e. everything
between dots.
If a component is an illegal name, like COM1 or AUX, we add an
underscore. If it contains illegal characters, like : or \, we
re-map that character into unicode private use area.
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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mksquashfs generates extended inodes if a directory contains 256
entries. libsquashfs so far only generated extended inodes if there
is no other way to encode it. Mimic the behaviour of mksquashfs by
adding a threshold.
For this to work, the "sqfs_inode_set_xattr_index" function has to
be changed to not immediately try to demote inodes to basic types.
The fstree serialization is modified to do that itself if the index
is 0xFFFFFFFF and the target is not a directory inode.
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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Print a proper error description instead of just an error code.
If the error is ERROR_FILE_EXISTS, print out a hint that this might
be caused by a case in-sensitivity issue.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Propperly set the parent eof flag and not a local one that isn't
accessed at all.
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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Instead of abusing the directory tree of another test case, add a
proper dummy hierarchy. This also fixes issues with parallel tests,
where another test generates squashfs images in the target path.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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- Force all tests into their proper sub directory
- Temporarily remove the corpora tests. They have been used for
regression tests before releases and are disabled by default, so
we should not ship them either. A script should be added for that,
downloading what is needed.
- The "pack a directory" test is also removed. It was rather hacky
and there already is a test case for the fstree_from_dir function,
which isn't ideal either. Something should be added to the
regression test suite.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Instead of sleeping in the worker thread, busy-loop-wait on a ticket
counter to try and serialize the workers in backward order.
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 "from dir" and from "from file" code, as well as the "sort file"
code is specific to gensquashfs, so move them there and the test
cases as well.
The medium term idea is to reduce libfstree to a stub, merge it into
the generic writer and ultimately hoist that into 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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On Linux or BSD distributions we have a native version installed
via package manager. On Windows, we can just build it from source
like the other libraries.
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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- When printing an error, specify the filename and line number
- Always print an error, including out of memory conditions
- Fail if we encounter a line that we don't recognize
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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The xattr values are not strings, they are arbitrary byte blobs.
To be on the safe side tough, we should still allocate the space for
the extra null byte and propperly initialize the buffer.
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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It's just too darn big, crossing the maximum guaranteed by C99.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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The help text should provide a short, concise explanation, for
quickly lookup up how to use the programs. For the input
formats, this is mostly covered by the examples themselves.
The detailed description can remain in the man page.
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 line-by-line reading function in the io library was specifically
added for this kind of use case, so we don't have to handle trimming
of lines, don't have to touch getline() and it's convoluted error
handling (return value -1 could mean either EOF or error).
The code that searches for '\n' and replaces it with '\0' can be
removed as well and a memory leak involving "line" is removed along
the way.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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- Some of the error/cleanup paths are merged.
- Struct fields don't have to be set to NULL if the entire struct is
free'd immediately after.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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When (during fragment deduplication) a fragment block is read back
from disk and unpacked, it can happen that it is _exactly_ the
given block size. The bounds check did '>=' instead of '>' and
failed in that case with a "data corruption" error.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Initialize the output compressor pointer to NULL, so if the function
fails, the value is propperly initialized to a NULL pointer instead
of relying on the function user to initialize it.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Similar to the hex blob decoder, we need this once for tar and
once for the filemap xattr parser.
Simply add a single, central implementation to libutil, with a
simple unit test, and then use it in both libtar and gensquashfs.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Since we need it twice (once for tar, once for the filemap xattr
parser), add a single, central implementation to libutil, add a
unit test for that implementation and then use it in both libtar
and gensquashfs.
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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Not all CPUs may be available for the current process. Some CPUs
may be offline, others may not be included in the process affinity
mask. In such cases too many threads will be created, which will
then compete unnecessarily for CPU time.
Use sched_getaffinity() to determine the correct number of threads
to create.
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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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Slightly modify the byte-for-byte comparison function to compare an
arbitrary range in a file and move it to libutil. Instead of calling
it for each block in the block writer, simply let it check an entire
range in the block writer and compute the range position/size of the
reference ahead, before looking for potential matches.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Instead of open coding it, use the array_t type from libutil.
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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A directory listing starts with a header that specifies a reference
inode number. Each entry then specifies a difference from that
reference value.
While the difference is _signed_, the reference value is _unsigned_.
This is handled correctly in the code, but was pointent out wrongly
in the documentation.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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The zlib library uses a typedef'd uInt type for ranges which may be
smaller than size_t.
The complicated clamping to the uInt range is technically not needed,
as the buffer size can grow at most to BUFSZ anyway, and it also
confuses coverity.
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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Instead of printing error messages to stderr, simply return an error
number instead, that the caller then prints out using sqfs_perror.
The underlying rbtree already uses sqfs error numbers, so little
change is needed here.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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- Make the script faster by unpacking everything at once instead
of file-by-file
- Also compare symlinks and directories
- More verbose output
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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