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Add missing cred.h functions 

Resolve compiler warning with kmem_free (unused len)
Add stub for byteorder.h
Add zlib shim for compress2 and uncompress functions



git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@29 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
This commit is contained in:
behlendo 2008-03-07 20:48:44 +00:00
parent b0dd3380aa
commit 3b3ba48fe9
5 changed files with 163 additions and 8 deletions
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4
include/sys/byteorder.h Normal file
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@ -0,0 +1,4 @@
#ifndef _SPL_ZMOD_H
#define _SPL_ZMOD_H
#endif /* SPL_ZMOD_H */

28
include/sys/cred.h
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@ -33,9 +33,35 @@ typedef struct cred {
/* auditinfo_addr_t cr_auinfo; audit info */
} cred_t;
#define kcred NULL
#define CRED() NULL
static __inline__ uid_t
crgetuid(cred_t *cr)
{
return 0;
}
static __inline__ gid_t
crgetgid(cred_t *cr)
{
return 0;
}
static __inline__ int
crgetngroups(cred_t *cr)
{
return 0;
}
static __inline__ gid_t *
crgetgroups(cred_t *cr)
{
return NULL;
}
#ifdef __cplusplus
}
#endif
#endif /* _SPL_CRED_H */

8
include/sys/kmem.h
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@ -58,7 +58,7 @@ extern unsigned int kmem_alloc_max;
#define kmem_free(ptr, size) \
({ \
BUG_ON(!ptr); \
BUG_ON(!ptr || size < 0); \
atomic_sub((size), &kmem_alloc_used); \
memset(ptr, 0x5a, (size)); /* Poison */ \
kfree(ptr); \
@ -70,7 +70,11 @@ extern unsigned int kmem_alloc_max;
#define kmem_alloc(size, flags) kmalloc(size, flags)
#define kmem_zalloc(size, flags) kzalloc(size, flags)
#define kmem_free(ptr, size) kfree(ptr)
#define kmem_free(ptr, size) \
({ \
BUG_ON(!ptr || size < 0); \
kfree(ptr); \
})
#endif /* DEBUG_KMEM */

11
include/sys/sysmacros.h
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@ -17,7 +17,14 @@ extern "C" {
#define TRUE 1
#define INT32_MAX INT_MAX
#define UINT64_MAX (~0ULL)
#define INT32_MIN INT_MIN
#define UINT32_MAX UINT_MAX
#define UINT32_MIN UINT_MIN
#define INT64_MAX LLONG_MAX
#define INT64_MIN LLONG_MIN
#define UINT64_MAX ULLONG_MAX
#define UINT64_MIN ULLONG_MIN
#define NBBY 8
#define ENOTSUP ENOTSUPP
@ -122,6 +129,8 @@ extern int p0;
extern int highbit(unsigned long i);
#define makedevice(maj,min) makedev(maj,min)
#define zone_dataset_visible(x, y) (1)
#define INGLOBALZONE(z) (1)
/* XXX - Borrowed from zfs project libsolcompat/include/sys/sysmacros.h */
/* common macros */

112
include/sys/zmod.h Normal file
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@ -0,0 +1,112 @@
#ifndef _SPL_ZMOD_H
#define _SPL_ZMOD_H
#include <linux/zlib.h>
/* NOTE: z_compress_level/z_uncompress are nearly identical copies of
* the compress2/uncompress functions provided by the official zlib
* package available at http://zlib.net/. The only changes made we to
* slightly adapt the functioned called to match the linux kernel
* implementation of zlib.
*/
/* ===========================================================================
* Compresses the source buffer into the destination buffer. The level
* parameter has the same meaning as in deflateInit. sourceLen is the byte
* length of the source buffer. Upon entry, destLen is the total size of the
* destination buffer, which must be at least 0.1% larger than sourceLen plus
* 12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
*
* compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
* memory, Z_BUF_ERROR if there was not enough room in the output buffer,
* Z_STREAM_ERROR if the level parameter is invalid.
*/
static __inline__ int
z_compress_level(Byte *dest, uLong *destLen, const Byte *source,
uLong sourceLen, int level)
{
z_stream stream;
int err;
stream.next_in = (Byte *)source;
stream.avail_in = (uInt)sourceLen;
#ifdef MAXSEG_64K
/* Check for source > 64K on 16-bit machine: */
if ((uLong)stream.avail_in != sourceLen)
return Z_BUF_ERROR;
#endif
stream.next_out = dest;
stream.avail_out = (uInt)*destLen;
if ((uLong)stream.avail_out != *destLen)
return Z_BUF_ERROR;
err = zlib_deflateInit(&stream, level);
if (err != Z_OK)
return err;
err = zlib_deflate(&stream, Z_FINISH);
if (err != Z_STREAM_END) {
zlib_deflateEnd(&stream);
return err == Z_OK ? Z_BUF_ERROR : err;
}
*destLen = stream.total_out;
err = zlib_deflateEnd(&stream);
return err;
} /* z_compress_level() */
/* ===========================================================================
* Decompresses the source buffer into the destination buffer. sourceLen is
* the byte length of the source buffer. Upon entry, destLen is the total
* size of the destination buffer, which must be large enough to hold the
* entire uncompressed data. (The size of the uncompressed data must have
* been saved previously by the compressor and transmitted to the decompressor
* by some mechanism outside the scope of this compression library.)
* Upon exit, destLen is the actual size of the compressed buffer.
* This function can be used to decompress a whole file at once if the
* input file is mmap'ed.
*
* uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
* enough memory, Z_BUF_ERROR if there was not enough room in the output
* buffer, or Z_DATA_ERROR if the input data was corrupted.
*/
static __inline__ int
z_uncompress(Byte *dest, uLong *destLen, const Byte *source, uLong sourceLen)
{
z_stream stream;
int err;
stream.next_in = (Byte *)source;
stream.avail_in = (uInt)sourceLen;
/* Check for source > 64K on 16-bit machine: */
if ((uLong)stream.avail_in != sourceLen)
return Z_BUF_ERROR;
stream.next_out = dest;
stream.avail_out = (uInt)*destLen;
if ((uLong)stream.avail_out != *destLen)
return Z_BUF_ERROR;
err = zlib_inflateInit(&stream);
if (err != Z_OK)
return err;
err = zlib_inflate(&stream, Z_FINISH);
if (err != Z_STREAM_END) {
zlib_inflateEnd(&stream);
if (err == Z_NEED_DICT ||
(err == Z_BUF_ERROR && stream.avail_in == 0))
return Z_DATA_ERROR;
return err;
}
*destLen = stream.total_out;
err = zlib_inflateEnd(&stream);
return err;
} /* z_uncompress() */
#endif /* SPL_ZMOD_H */