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#ifndef H_HEADER_INTERNAL
#define H_HEADER_INTERNAL
/** \ingroup header
* \file lib/header_internal.h
*/
#include <netinet/in.h>
#include <rpm/header.h>
#define INDEX_MALLOC_SIZE 8
/*
* Teach header.c about legacy tags.
*/
#define HEADER_OLDFILENAMES 1027
#define HEADER_BASENAMES 1117
/** \ingroup header
* Description of tag data.
*/
typedef struct entryInfo_s * entryInfo;
struct entryInfo_s {
rpmTag tag; /*!< Tag identifier. */
rpmTagType type; /*!< Tag data type. */
int32_t offset; /*!< Offset into data segment (ondisk only). */
rpm_count_t count; /*!< Number of tag elements. */
};
#define REGION_TAG_TYPE RPM_BIN_TYPE
#define REGION_TAG_COUNT sizeof(struct entryInfo_s)
#define ENTRY_IS_REGION(_e) \
(((_e)->info.tag >= HEADER_IMAGE) && ((_e)->info.tag < HEADER_REGIONS))
#define ENTRY_IN_REGION(_e) ((_e)->info.offset < 0)
/** \ingroup header
* A single tag from a Header.
*/
typedef struct indexEntry_s * indexEntry;
struct indexEntry_s {
struct entryInfo_s info; /*!< Description of tag data. */
rpm_data_t data; /*!< Location of tag data. */
int length; /*!< No. bytes of data. */
int rdlen; /*!< No. bytes of data in region. */
};
/** \ingroup header
* The Header data structure.
*/
struct headerToken_s {
void * blob; /*!< Header region blob. */
indexEntry index; /*!< Array of tags. */
int indexUsed; /*!< Current size of tag array. */
int indexAlloced; /*!< Allocated size of tag array. */
unsigned int instance; /*!< Rpmdb instance (offset) */
int flags;
#define HEADERFLAG_SORTED (1 << 0) /*!< Are header entries sorted? */
#define HEADERFLAG_ALLOCATED (1 << 1) /*!< Is 1st header region allocated? */
#define HEADERFLAG_LEGACY (1 << 2) /*!< Header came from legacy source? */
#define HEADERFLAG_DEBUG (1 << 3) /*!< Debug this header? */
int nrefs; /*!< Reference count. */
};
/**
* Sanity check on no. of tags.
* This check imposes a limit of 65K tags, more than enough.
*/
#define hdrchkTags(_ntags) ((_ntags) & 0xffff0000)
/**
* Sanity check on type values.
*/
#define hdrchkType(_type) ((_type) < RPM_MIN_TYPE || (_type) > RPM_MAX_TYPE)
/**
* Sanity check on data size and/or offset and/or count.
* This check imposes a limit of 16 MB, more than enough.
*/
#define hdrchkData(_nbytes) ((_nbytes) & 0xff000000)
/**
* Sanity check on data alignment for data type.
*/
#define hdrchkAlign(_type, _off) ((_off) & (typeAlign[_type]-1))
/**
* Sanity check on range of data offset.
*/
#define hdrchkRange(_dl, _off) ((_off) < 0 || (_off) > (_dl))
#ifdef __cplusplus
extern "C" {
#endif
/** \ingroup header
* Conver a 64bit value to network byte order.
* @param n a number
* @return number in network byte order
*/
RPM_GNUC_INTERNAL
uint64_t htonll( uint64_t n );
/** \ingroup header
* Set header instance (rpmdb record number)
* @param h header
* @param instance record number
*/
RPM_GNUC_INTERNAL
void headerSetInstance(Header h, unsigned int instance);
/** \ingroup header
* Return array of locales found in header.
* The array is terminated with a NULL sentinel.
* @param h header
* @return array of locales (or NULL on error)
*/
char ** headerGetLangs(Header h);
/** \ingroup header
* Retrieve tag value with type match.
* If *type is RPM_NULL_TYPE any type will match, otherwise only *type will
* match.
*
* @param h header
* @param tag tag
* @retval type address of tag value data type (or NULL)
* @retval p address of pointer to tag value(s) (or NULL)
* @retval c address of number of values (or NULL)
* @return 1 on success, 0 on failure
*/
int headerGetRawEntry(Header h, rpmTag tag,
rpmTagType * type,
rpm_data_t * p,
rpm_count_t * c);
/** \ingroup header
* Return header reference count.
* @param h header
* @return no. of references
*/
/* FIX: cast? */
static inline int headerUsageCount(Header h) {
return h->nrefs;
}
/** \ingroup header
* Dump a header in human readable format (for debugging).
* @param h header
* @param f file handle
* @param flags 0 or HEADER_DUMP_INLINE
*/
void headerDump(Header h, FILE *f, int flags);
#define HEADER_DUMP_INLINE 1
#ifdef __cplusplus
}
#endif
#endif /* H_HEADER_INTERNAL */
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