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#ifndef H_CPIO
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#define H_CPIO
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/** \ingroup payload
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* \file lib/cpio.h
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* Structures used to handle cpio payloads within rpm packages.
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*
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* @warning Rpm's cpio implementation may be different than standard cpio.
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* The implementation is pretty close, but it has some behaviors which are
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* more to RPM's liking. I tried to document the differing behavior in cpio.c,
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* but I may have missed some (ewt).
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*
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*/
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typedef struct rpmcpio_s * rpmcpio_t;
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Create CPIO file object
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* @param fd file
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* @param mode XXX
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* @return CPIO object
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**/
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rpmcpio_t rpmcpioOpen(FD_t fd, char mode);
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int rpmcpioClose(rpmcpio_t cpio);
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off_t rpmcpioTell(rpmcpio_t cpio);
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rpmcpio_t rpmcpioFree(rpmcpio_t cpio);
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/**
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* Write cpio header.
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* @param cpio cpio archive
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* @param path file name
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* @param st stat struct with meta data
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* @return 0 on success
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*/
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RPM_GNUC_INTERNAL
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int rpmcpioHeaderWrite(rpmcpio_t cpio, char * path, struct stat * st);
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RPM_GNUC_INTERNAL
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int rpmcpioStrippedHeaderWrite(rpmcpio_t cpio, int fx, off_t fsize);
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ssize_t rpmcpioWrite(rpmcpio_t cpio, const void * buf, size_t size);
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/**
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* Read cpio header. Iff fx is returned as -1 a cpio header was read
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* and the file name is found in path. Otherwise a stripped header was read
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* and the fx is the number of the file in the header/rpmfi. In this case
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* rpmcpioSetExpectedFileSize() needs to be called with the file size of the
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* payload content - with may be zero for hard links, directory or other
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* special files.
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* @retval fsm file path and stat info
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* @retval path path of the file
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* @retval fx number in the header of the file read
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* @return 0 on success
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*/
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RPM_GNUC_INTERNAL
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int rpmcpioHeaderRead(rpmcpio_t cpio, char ** path, int * fx);
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/**
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* Tell the cpio object the expected file size in the payload.
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* The size must be zero for all but the last of hard linked files,
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* directories and special files.
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* This is needed after reading a stripped cpio header! See above.
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*/
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RPM_GNUC_INTERNAL
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void rpmcpioSetExpectedFileSize(rpmcpio_t cpio, off_t fsize);
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ssize_t rpmcpioRead(rpmcpio_t cpio, void * buf, size_t size);
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#ifdef __cplusplus
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}
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#endif
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#endif /* H_CPIO */
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