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bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
#include <linux/zutil.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/vmalloc.h>
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/* Utility function: initialize zlib, unpack binary blob, clean up zlib,
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* return len or negative error code.
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*/
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int zlib_inflate_blob(void *gunzip_buf, unsigned int sz,
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const void *buf, unsigned int len)
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{
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const u8 *zbuf = buf;
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struct z_stream_s *strm;
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int rc;
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rc = -ENOMEM;
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strm = kmalloc_obj(*strm);
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if (strm == NULL)
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goto gunzip_nomem1;
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strm->workspace = kmalloc(zlib_inflate_workspacesize(), GFP_KERNEL);
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if (strm->workspace == NULL)
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goto gunzip_nomem2;
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/* gzip header (1f,8b,08... 10 bytes total + possible asciz filename)
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* expected to be stripped from input
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*/
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strm->next_in = zbuf;
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strm->avail_in = len;
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strm->next_out = gunzip_buf;
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strm->avail_out = sz;
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rc = zlib_inflateInit2(strm, -MAX_WBITS);
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if (rc == Z_OK) {
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rc = zlib_inflate(strm, Z_FINISH);
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/* after Z_FINISH, only Z_STREAM_END is "we unpacked it all" */
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if (rc == Z_STREAM_END)
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rc = sz - strm->avail_out;
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else
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rc = -EINVAL;
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zlib_inflateEnd(strm);
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} else
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rc = -EINVAL;
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kfree(strm->workspace);
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gunzip_nomem2:
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kfree(strm);
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gunzip_nomem1:
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return rc; /* returns Z_OK (0) if successful */
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}
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