History log of /system/core/libsparse/sparse.c
Revision Date Author Comments (<<< Hide modified files) (Show modified files >>>)
f1ec8ac84a8540b92a16f187bfa92b2f3c63917e 24-Jul-2012 Colin Cross <ccross@android.com> libsparse: fix 32 bit overflow when calculating last chunk

last_block * s->block_size can overflow when writing large filesystems,
cast to 64 bits before multiplying.

Change-Id: I3e54097852ce7d0fd271eab53d65e666284898e4
b43828b247fd4f1e0373584de0504004c69eeac9 09-Jun-2012 Colin Cross <ccross@android.com> libsparse: rename symbols that conflict with libext4_utils

Until ext4_utils switches to using libsparse, libext4_utils defines some
of the same symbols as libsparse. Fastboot links statically against
both of them, and there is no easy way to make the symbols hidden, so
just rename them in libsparse.

Change-Id: Idc2cfe20efe3c3a7fb8233f453a89bbbeb0dcc8b
317a09e2d47257df5e0972c85f14c2a6ffdbbfd2 25-May-2012 Colin Cross <ccross@android.com> libsparse: add sparse_file_len

Add sparse_file_len, which will compute the size of data that would
be produced if sparse_file_write was called. Useful combined with

Change-Id: I1a156d1071760f5559483954a5c62ffc20298703
bdc6d39ed6c09199a5d806f29b71b44cbb27c5c2 03-May-2012 Colin Cross <ccross@android.com> libsparse: add function to resparse a file and a utility to use it

Add sparse_file_repsarse, which splits chunks in an existing sparse
file such that the maximum size of a chunk, plus a header and footer,
is smaller than the given size. This will allow multiple smaller
sparse files to result in the same data as a large sparse file.

Change-Id: I177abdb958a23d5afd394ff265c5b0c6a3ff22fa
1e17b313a6257b7b5081e178e81435c09d60378e 22-May-2012 Colin Cross <ccross@android.com> libsparse: add callback output file type

Add a new output file subclass that will call a callback for
each block as it is written. Will be used to measure the space
used by each sparse block to allow resparsing files.

Also add sparse_file_callback, which will write out a sparse
file by calling the provided write function.

Change-Id: I18707bd9c357b68da319cc07982e93d1c2b2bee2
be8ddcb35a459481c0bcf5bfe645c1fefe963f5c 26-Apr-2012 Colin Cross <ccross@android.com> libsparse: merge adjacent blocks of the same type

When a block is added that is adjacent to another block and of the same
type, merge it. This will be useful for converting regular images to
sparse images, allowing the reader to add a single block at a time and
letting libsparse optimize into larger blocks as it goes.

Does not support merge two blocks that are backed by a data pointer,
only blocks that are backed by a file for now.

Change-Id: I95aa231714cbe01ac194e868c21385806c0bdb97
a21930b6b0dbb04a52948566d58fb48c6db58bab 26-Apr-2012 Colin Cross <ccross@android.com> libsparse: add error reporting functions

Change-Id: I2f21355b6c5339d1d724b4c121ea30d575b2d366
9e1f17e926fa20255c5f4b4d2f68aa98a964253a 26-Apr-2012 Colin Cross <ccross@android.com> libsparse: add support for including fds

Add sparse_file_add_fd to include all or part of the contents
of an fd in the output file. Will be useful for re-sparsing files
where fd will point to the input sparse file.

Change-Id: I5d4ab07fb37231e8e9c1912f62a2968c8b0a00ef
b55dceea986ab24f8b836b5116b389ed619c816e 25-Apr-2012 Colin Cross <ccross@android.com> libsparse: cleanups

Move block loops into sparse.c with iterator helpers in backed_block.c.
Simplify chunk writing by moving skip chunk calls from output_file.c to
Rename variables to be consistent with new naming.
Remove use of u8, u32, u64.

Change-Id: Ic138ad58bef9f96239266ccee12ee83ea285e7eb
411619e921904b896eddae81c086c1f687c8304d 25-Apr-2012 Colin Cross <ccross@android.com> libsparse: remove static variables

Removes static variables in backed_block.c to allow multiple
sparse files to be open at the same time.

Change-Id: I012d8a424c6e21a7352408416adb7c72ee8add21
28fa5bc347390480fe190294c6c385b6a9f0d68b 20-May-2012 Colin Cross <ccross@android.com> system/core: move libsparse into system/core

This moves an exact copy of libsparse from
system/extras/ext4_utils/libsparse to system/core/libsparse in
preparation for linking tools in system/core against it.

Change-Id: If664e4fcfd6612844ac745589beb1517e7f9fe58