145 lines
3.8 KiB
C
145 lines
3.8 KiB
C
#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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/** \ingroup payload
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* @note CPIO_CHECK_ERRNO bit is set only if errno is valid.
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*/
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#define CPIOERR_CHECK_ERRNO 0x00008000
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/** \ingroup payload
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*/
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enum cpioErrorReturns {
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CPIOERR_BAD_MAGIC = 2,
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CPIOERR_BAD_HEADER = 3,
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CPIOERR_OPEN_FAILED = 4 | CPIOERR_CHECK_ERRNO,
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CPIOERR_CHMOD_FAILED = 5 | CPIOERR_CHECK_ERRNO,
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CPIOERR_CHOWN_FAILED = 6 | CPIOERR_CHECK_ERRNO,
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CPIOERR_WRITE_FAILED = 7 | CPIOERR_CHECK_ERRNO,
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CPIOERR_UTIME_FAILED = 8 | CPIOERR_CHECK_ERRNO,
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CPIOERR_UNLINK_FAILED = 9 | CPIOERR_CHECK_ERRNO,
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CPIOERR_RENAME_FAILED = 10 | CPIOERR_CHECK_ERRNO,
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CPIOERR_SYMLINK_FAILED = 11 | CPIOERR_CHECK_ERRNO,
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CPIOERR_STAT_FAILED = 12 | CPIOERR_CHECK_ERRNO,
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CPIOERR_LSTAT_FAILED = 13 | CPIOERR_CHECK_ERRNO,
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CPIOERR_MKDIR_FAILED = 14 | CPIOERR_CHECK_ERRNO,
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CPIOERR_RMDIR_FAILED = 15 | CPIOERR_CHECK_ERRNO,
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CPIOERR_MKNOD_FAILED = 16 | CPIOERR_CHECK_ERRNO,
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CPIOERR_MKFIFO_FAILED = 17 | CPIOERR_CHECK_ERRNO,
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CPIOERR_LINK_FAILED = 18 | CPIOERR_CHECK_ERRNO,
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CPIOERR_READLINK_FAILED = 19 | CPIOERR_CHECK_ERRNO,
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CPIOERR_READ_FAILED = 20 | CPIOERR_CHECK_ERRNO,
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CPIOERR_COPY_FAILED = 21 | CPIOERR_CHECK_ERRNO,
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CPIOERR_LSETFCON_FAILED = 22 | CPIOERR_CHECK_ERRNO,
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CPIOERR_HDR_SIZE = 23,
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CPIOERR_HDR_TRAILER = 24,
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CPIOERR_UNKNOWN_FILETYPE= 25,
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CPIOERR_MISSING_HARDLINK= 26,
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CPIOERR_DIGEST_MISMATCH = 27,
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CPIOERR_INTERNAL = 28,
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CPIOERR_UNMAPPED_FILE = 29,
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CPIOERR_ENOENT = 30,
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CPIOERR_ENOTEMPTY = 31,
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CPIOERR_SETCAP_FAILED = 32 | CPIOERR_CHECK_ERRNO,
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CPIOERR_FILE_SIZE = 33,
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};
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/*
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* Size limit for individual files in "new ascii format" cpio archives.
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* The max size of the entire archive is unlimited from cpio POV,
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* but subject to filesystem limitations.
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*/
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#define CPIO_FILESIZE_MAX UINT32_MAX
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#define CPIO_NEWC_MAGIC "070701"
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#define CPIO_CRC_MAGIC "070702"
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#define CPIO_TRAILER "TRAILER!!!"
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/** \ingroup payload
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* Cpio archive header information.
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*/
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struct cpioCrcPhysicalHeader {
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char magic[6];
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char inode[8];
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char mode[8];
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char uid[8];
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char gid[8];
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char nlink[8];
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char mtime[8];
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char filesize[8];
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char devMajor[8];
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char devMinor[8];
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char rdevMajor[8];
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char rdevMinor[8];
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char namesize[8];
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char checksum[8]; /* ignored !! */
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};
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#define PHYS_HDR_SIZE 110 /* Don't depend on sizeof(struct) */
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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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* @retval fsm file path and stat info
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* @param st
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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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ssize_t rpmcpioWrite(rpmcpio_t cpio, void * buf, size_t size);
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/**
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* Read cpio header.
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* @retval fsm file path and stat info
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* @retval st
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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, struct stat * st);
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ssize_t rpmcpioRead(rpmcpio_t cpio, void * buf, size_t size);
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/** \ingroup payload
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* Return formatted error message on payload handling failure.
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* @param rc error code
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* @return formatted error string
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*/
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/* XXX should be RPM_GNUC_INTERNAL too but build/pack.c uses */
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const char * rpmcpioStrerror(int rc);
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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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