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#ifndef _H_RPMLEAD
#define _H_RPMLEAD
/** \ingroup lead
* \file lib/rpmlead.h
* Routines to read and write an rpm lead structure for a a package.
*/
#ifdef __cplusplus
extern "C" {
#endif
#define RPMLEAD_BINARY 0
#define RPMLEAD_SOURCE 1
#define RPMLEAD_MAGIC0 0xed
#define RPMLEAD_MAGIC1 0xab
#define RPMLEAD_MAGIC2 0xee
#define RPMLEAD_MAGIC3 0xdb
#define RPMLEAD_SIZE 96 /*!< Don't rely on sizeof(struct) */
typedef struct rpmlead_s * rpmlead;
/** \ingroup lead
* Initialize a lead structure
* @return Pointer to empty lead structure
*/
rpmlead rpmLeadNew(void);
/** \ingroup lead
* Initialize a lead structure from header
* param h Header
* @return Pointer to populated lead structure (malloced)
*/
rpmlead rpmLeadFromHeader(Header h);
/** \ingroup lead
* Free a lead structure
* @param lead Pointer to lead structure
* @return NULL always
*/
rpmlead rpmLeadFree(rpmlead lead);
/** \ingroup lead
* Write lead to file handle.
* @param fd file handle
* @param lead package lead
* @return RPMRC_OK on success, RPMRC_FAIL on error
*/
rpmRC rpmLeadWrite(FD_t fd, rpmlead lead);
/** \ingroup lead
* Read lead from file handle.
* @param fd file handle
* @retval lead package lead
* @return RPMRC_OK on success, RPMRC_FAIL/RPMRC_NOTFOUND on error
*/
rpmRC rpmLeadRead(FD_t fd, rpmlead lead);
/** \ingroup lead
* Check lead for compatibility.
* @param lead Pointer to lead handle
* @retval fn Pointer to error message, NULL on success
* @return RPMRC_OK on success,
* RPMRC_NOTFOUND if not an rpm,
* RPMRC_FAIL on invalid/incompatible rpm
*/
rpmRC rpmLeadCheck(rpmlead lead, const char **msg);
/** \ingroup lead
* Returen type (source vs binary) of lead
* @param lead Pointer to lead handle
* @return RPMLEAD_BINARY or RPMLEAD_SOURCE, -1 on invalid
*/
int rpmLeadType(rpmlead lead);
#ifdef __cplusplus
}
#endif
#endif /* _H_RPMLEAD */
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