235 lines
6.6 KiB
C
235 lines
6.6 KiB
C
#ifndef H_FSM
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#define H_FSM
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/** \ingroup payload
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* \file lib/fsm.h
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* File state machine to handle a payload within an rpm package.
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*/
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#include <rpm/rpmfi.h>
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extern int _fsm_debug;
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/**
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*/
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#define FSM_VERBOSE 0x8000
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#define FSM_INTERNAL 0x4000
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#define FSM_SYSCALL 0x2000
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#define FSM_DEAD 0x1000
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#define _fv(_a) ((_a) | FSM_VERBOSE)
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#define _fi(_a) ((_a) | FSM_INTERNAL)
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#define _fs(_a) ((_a) | (FSM_INTERNAL | FSM_SYSCALL))
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#define _fd(_a) ((_a) | (FSM_INTERNAL | FSM_DEAD))
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typedef enum fileStage_e {
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FSM_UNKNOWN = 0,
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FSM_INIT = _fd(1),
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FSM_PRE = _fd(2),
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FSM_PROCESS = _fv(3),
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FSM_POST = _fd(4),
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FSM_UNDO = 5,
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FSM_FINI = 6,
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FSM_PKGINSTALL = _fd(7),
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FSM_PKGERASE = _fd(8),
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FSM_PKGBUILD = _fd(9),
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FSM_PKGUNDO = _fd(11),
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FSM_CREATE = _fd(17),
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FSM_MAP = _fd(18),
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FSM_MKDIRS = _fi(19),
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FSM_RMDIRS = _fi(20),
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FSM_MKLINKS = _fi(21),
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FSM_NOTIFY = _fd(22),
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FSM_DESTROY = _fd(23),
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FSM_VERIFY = _fd(24),
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FSM_COMMIT = _fd(25),
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FSM_UNLINK = _fs(33),
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FSM_RENAME = _fs(34),
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FSM_MKDIR = _fs(35),
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FSM_RMDIR = _fs(36),
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FSM_LSETFCON= _fs(39),
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FSM_CHOWN = _fs(40),
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FSM_LCHOWN = _fs(41),
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FSM_CHMOD = _fs(42),
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FSM_UTIME = _fs(43),
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FSM_SYMLINK = _fs(44),
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FSM_LINK = _fs(45),
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FSM_MKFIFO = _fs(46),
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FSM_MKNOD = _fs(47),
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FSM_LSTAT = _fs(48),
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FSM_STAT = _fs(49),
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FSM_READLINK= _fs(50),
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FSM_SETCAP = _fs(52),
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FSM_NEXT = _fd(65),
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FSM_EAT = _fd(66),
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FSM_POS = _fd(67),
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FSM_PAD = _fd(68),
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FSM_TRAILER = _fd(69),
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FSM_HREAD = _fd(70),
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FSM_HWRITE = _fd(71),
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FSM_DREAD = _fs(72),
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FSM_DWRITE = _fs(73),
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FSM_ROPEN = _fs(129),
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FSM_READ = _fs(130),
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FSM_RCLOSE = _fs(131),
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FSM_WOPEN = _fs(132),
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FSM_WRITE = _fs(133),
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FSM_WCLOSE = _fs(134)
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} fileStage;
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#undef _fv
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#undef _fi
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#undef _fs
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#undef _fd
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/** \ingroup payload
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*/
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enum cpioMapFlags_e {
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CPIO_MAP_PATH = (1 << 0),
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CPIO_MAP_MODE = (1 << 1),
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CPIO_MAP_UID = (1 << 2),
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CPIO_MAP_GID = (1 << 3),
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CPIO_FOLLOW_SYMLINKS= (1 << 4), /*!< only for building. */
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CPIO_MAP_ABSOLUTE = (1 << 5),
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CPIO_MAP_ADDDOT = (1 << 6),
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CPIO_ALL_HARDLINKS = (1 << 7), /*!< fail if hardlinks are missing. */
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CPIO_MAP_TYPE = (1 << 8), /*!< only for building. */
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CPIO_SBIT_CHECK = (1 << 9)
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};
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typedef rpmFlags cpioMapFlags;
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typedef struct fsmIterator_s * FSMI_t;
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typedef struct fsm_s * FSM_t;
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typedef struct rpmpsm_s * rpmpsm;
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typedef struct hardLink_s * hardLink_t;
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/** \ingroup payload
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* File name and stat information.
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*/
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struct fsm_s {
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char * path; /*!< Current file name. */
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char * opath; /*!< Original file name. */
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FD_t cfd; /*!< Payload file handle. */
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FD_t rfd; /*!< read: File handle. */
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char * rdbuf; /*!< read: Buffer. */
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char * rdb; /*!< read: Buffer allocated. */
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size_t rdsize; /*!< read: Buffer allocated size. */
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size_t rdlen; /*!< read: Number of bytes requested.*/
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size_t rdnb; /*!< read: Number of bytes returned. */
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FD_t wfd; /*!< write: File handle. */
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char * wrbuf; /*!< write: Buffer. */
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char * wrb; /*!< write: Buffer allocated. */
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size_t wrsize; /*!< write: Buffer allocated size. */
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size_t wrlen; /*!< write: Number of bytes requested.*/
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size_t wrnb; /*!< write: Number of bytes returned. */
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FSMI_t iter; /*!< File iterator. */
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int ix; /*!< Current file iterator index. */
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hardLink_t links; /*!< Pending hard linked file(s). */
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hardLink_t li; /*!< Current hard linked file(s). */
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rpm_loff_t * archiveSize; /*!< Pointer to archive size. */
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rpm_loff_t archivePos; /*!< Current archive position. */
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rpm_loff_t cpioPos;
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char ** failedFile; /*!< First file name that failed. */
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const char * subdir; /*!< Current file sub-directory. */
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const char * osuffix; /*!< Old, preserved, file suffix. */
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const char * nsuffix; /*!< New, created, file suffix. */
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const char * suffix; /*!< Current file suffix. */
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char sufbuf[64]; /* XXX eliminate */
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short * dnlx; /*!< Last dirpath verified indexes. */
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char * ldn; /*!< Last dirpath verified. */
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int ldnlen; /*!< Last dirpath current length. */
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int ldnalloc; /*!< Last dirpath allocated length. */
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int postpone; /*!< Skip remaining stages? */
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int diskchecked; /*!< Has stat(2) been performed? */
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int exists; /*!< Does current file exist on disk? */
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int mkdirsdone; /*!< Have "orphan" dirs been created? */
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int rc; /*!< External file stage return code. */
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cpioMapFlags mapFlags; /*!< Bit(s) to control mapping. */
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const char * dirName; /*!< File directory name. */
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const char * baseName; /*!< File base name. */
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const unsigned char * digest; /*!< Binary digest (NULL disables). */
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security_context_t fcontext;/*!< File security context (NULL disables). */
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void *fcaps; /*!< File capabilities */
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pgpHashAlgo digestalgo; /*!< File digest algorithm */
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unsigned fflags; /*!< File flags. */
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rpmFileAction action; /*!< File disposition. */
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fileStage goal; /*!< Package state machine goal. */
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fileStage stage; /*!< External file stage. */
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fileStage nstage; /*!< Next file stage. */
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struct stat sb; /*!< Current file stat(2) info. */
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struct stat osb; /*!< Original file stat(2) info. */
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rpmpsm psm; /*!< "parent" package state machine */
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};
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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 file state machine instance.
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* @param mapflags CPIO map flags to use
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* @return file state machine
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*/
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RPM_GNUC_INTERNAL
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FSM_t newFSM(cpioMapFlags mapflags);
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/**
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* Destroy file state machine instance.
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* @param fsm file state machine
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* @return always NULL
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*/
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RPM_GNUC_INTERNAL
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FSM_t freeFSM(FSM_t fsm);
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/**
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* Load external data into file state machine.
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* @param fsm file state machine
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* @param goal
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* @param ts transaction set
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* @param fi transaction element file info
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* @param cfd
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* @param psm owner psm (or NULL)
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* @retval archiveSize pointer to archive size
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* @retval failedFile pointer to first file name that failed (malloced)
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* @return 0 on success
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*/
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int fsmSetup(FSM_t fsm, fileStage goal,
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rpmts ts,
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rpmte te,
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rpmfi fi,
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FD_t cfd,
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rpmpsm psm,
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rpm_loff_t * archiveSize,
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char ** failedFile);
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/**
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* Clean file state machine.
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* @param fsm file state machine
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* @return 0 on success
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*/
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int fsmTeardown(FSM_t fsm);
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/**
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* File state machine driver.
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* @param fsm file state machine
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* @param nstage next stage
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* @return 0 on success
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*/
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RPM_GNUC_INTERNAL
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int fsmNext(FSM_t fsm, fileStage nstage);
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RPM_GNUC_INTERNAL
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void rpmpsmNotify(rpmpsm psm, int what, rpm_loff_t amount);
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#ifdef __cplusplus
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}
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#endif
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#endif /* H_FSM */
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