/** \ingroup payload * \file lib/fsm.c * File state machine to handle a payload from a package. */ #include "system.h" #include #include #if defined(HAVE_MMAP) #include #endif #if WITH_CAP #include #endif #include #include #include #include #include "rpmio/rpmio_internal.h" /* fdInit/FiniDigest */ #include "lib/cpio.h" #include "lib/fsm.h" #define fsmUNSAFE fsmStage #include "lib/rpmfi_internal.h" /* XXX fi->apath, ... */ #include "lib/rpmte_internal.h" /* XXX rpmfs */ #include "lib/rpmts_internal.h" /* rpmtsSELabelFoo() only */ #include "lib/rpmug.h" #include "debug.h" #define _FSM_DEBUG 0 int _fsm_debug = _FSM_DEBUG; /* XXX Failure to remove is not (yet) cause for failure. */ static int strict_erasures = 0; /** \ingroup payload * Keeps track of the set of all hard links to a file in an archive. */ struct hardLink_s { hardLink_t next; const char ** nsuffix; int * filex; struct stat sb; nlink_t nlink; nlink_t linksLeft; int linkIndex; int createdPath; }; /** \ingroup payload * Iterator across package file info, forward on install, backward on erase. */ struct fsmIterator_s { rpmts ts; /*!< transaction set. */ rpmte te; /*!< transaction element. */ rpmfi fi; /*!< transaction element file info. */ int reverse; /*!< reversed traversal? */ int isave; /*!< last returned iterator index. */ int i; /*!< iterator index. */ }; /** * Retrieve transaction set from file state machine iterator. * @param fsm file state machine * @return transaction set */ static rpmts fsmGetTs(const FSM_t fsm) { const FSMI_t iter = fsm->iter; return (iter ? iter->ts : NULL); } /** * Retrieve transaction element file info from file state machine iterator. * @param fsm file state machine * @return transaction element file info */ static rpmfi fsmGetFi(const FSM_t fsm) { const FSMI_t iter = fsm->iter; return (iter ? iter->fi : NULL); } static rpmte fsmGetTe(const FSM_t fsm) { const FSMI_t iter = fsm->iter; return (iter ? iter->te : NULL); } #define SUFFIX_RPMORIG ".rpmorig" #define SUFFIX_RPMSAVE ".rpmsave" #define SUFFIX_RPMNEW ".rpmnew" /* Default directory and file permissions if not mapped */ #define _dirPerms 0755 #define _filePerms 0644 /* * XXX Forward declarations for previously exported functions to avoid moving * things around needlessly */ static const char * fileStageString(fileStage a); static const char * fileActionString(rpmFileAction a); static int fsmStage(FSM_t fsm, fileStage stage); /** \ingroup payload * Build path to file from file info, ornamented with subdir and suffix. * @param fsm file state machine data * @param st file stat info * @param subdir subdir to use (NULL disables) * @param suffix suffix to use (NULL disables) * @retval path to file (malloced) */ static char * fsmFsPath(const FSM_t fsm, const struct stat * st, const char * subdir, const char * suffix) { char * s = NULL; if (fsm) { int isDir = (st && S_ISDIR(st->st_mode)); s = rstrscat(NULL, fsm->dirName, (!isDir && subdir) ? subdir : "", fsm->baseName, (!isDir && suffix) ? suffix : "", NULL); } return s; } /** \ingroup payload * Destroy file info iterator. * @param p file info iterator * @retval NULL always */ static FSMI_t mapFreeIterator(FSMI_t iter) { if (iter) { iter->ts = rpmtsFree(iter->ts); iter->te = NULL; /* XXX rpmte is not refcounted yet */ iter->fi = rpmfiFree(iter->fi); free(iter); } return NULL; } /** \ingroup payload * Create file info iterator. * @param ts transaction set * @param fi transaction element file info * @return file info iterator */ static FSMI_t mapInitIterator(rpmts ts, rpmte te, rpmfi fi) { FSMI_t iter = NULL; iter = xcalloc(1, sizeof(*iter)); iter->ts = rpmtsLink(ts); iter->te = te; /* XXX rpmte is not refcounted yet */ iter->fi = rpmfiLink(fi); iter->reverse = (rpmteType(te) == TR_REMOVED); iter->i = (iter->reverse ? (rpmfiFC(fi) - 1) : 0); iter->isave = iter->i; return iter; } /** \ingroup payload * Return next index into file info. * @param a file info iterator * @return next index, -1 on termination */ static int mapNextIterator(FSMI_t iter) { int i = -1; if (iter) { const rpmfi fi = iter->fi; if (iter->reverse) { if (iter->i >= 0) i = iter->i--; } else { if (iter->i < rpmfiFC(fi)) i = iter->i++; } iter->isave = i; } return i; } /** \ingroup payload */ static int cpioStrCmp(const void * a, const void * b) { const char * afn = *(const char **)a; const char * bfn = *(const char **)b; /* Match rpm-4.0 payloads with ./ prefixes. */ if (afn[0] == '.' && afn[1] == '/') afn += 2; if (bfn[0] == '.' && bfn[1] == '/') bfn += 2; /* If either path is absolute, make it relative. */ if (afn[0] == '/') afn += 1; if (bfn[0] == '/') bfn += 1; return strcmp(afn, bfn); } /** \ingroup payload * Locate archive path in file info. * @param iter file info iterator * @param fsmPath archive path * @return index into file info, -1 if archive path was not found */ static int mapFind(FSMI_t iter, const char * fsmPath) { int ix = -1; if (iter) { const rpmfi fi = iter->fi; int fc = rpmfiFC(fi); if (fi && fc > 0 && fi->apath && fsmPath && *fsmPath) { char ** p = NULL; if (fi->apath != NULL) p = bsearch(&fsmPath, fi->apath, fc, sizeof(fsmPath), cpioStrCmp); if (p) { iter->i = p - fi->apath; ix = mapNextIterator(iter); } } } return ix; } /** \ingroup payload * Directory name iterator. */ typedef struct dnli_s { rpmfi fi; char * active; int reverse; int isave; int i; } * DNLI_t; /** \ingroup payload * Destroy directory name iterator. * @param a directory name iterator * @retval NULL always */ static DNLI_t dnlFreeIterator(DNLI_t dnli) { if (dnli) { if (dnli->active) free(dnli->active); free(dnli); } return NULL; } /** \ingroup payload */ static inline int dnlCount(const DNLI_t dnli) { return (dnli ? rpmfiDC(dnli->fi) : 0); } /** \ingroup payload */ static inline int dnlIndex(const DNLI_t dnli) { return (dnli ? dnli->isave : -1); } /** \ingroup payload * Create directory name iterator. * @param fsm file state machine data * @param reverse traverse directory names in reverse order? * @return directory name iterator */ static DNLI_t dnlInitIterator(const FSM_t fsm, int reverse) { rpmfi fi = fsmGetFi(fsm); rpmfs fs = rpmteGetFileStates(fsmGetTe(fsm)); DNLI_t dnli; int i, j; int dc; if (fi == NULL) return NULL; dc = rpmfiDC(fi); dnli = xcalloc(1, sizeof(*dnli)); dnli->fi = fi; dnli->reverse = reverse; dnli->i = (reverse ? dc : 0); if (dc) { dnli->active = xcalloc(dc, sizeof(*dnli->active)); int fc = rpmfiFC(fi); /* Identify parent directories not skipped. */ for (i = 0; i < fc; i++) if (!XFA_SKIPPING(rpmfsGetAction(fs, i))) dnli->active[rpmfiDIIndex(fi, i)] = 1; /* Exclude parent directories that are explicitly included. */ for (i = 0; i < fc; i++) { int dil; size_t dnlen, bnlen; if (!S_ISDIR(rpmfiFModeIndex(fi, i))) continue; dil = rpmfiDIIndex(fi, i); dnlen = strlen(rpmfiDNIndex(fi, dil)); bnlen = strlen(rpmfiBNIndex(fi, i)); for (j = 0; j < dc; j++) { const char * dnl; size_t jlen; if (!dnli->active[j] || j == dil) continue; dnl = rpmfiDNIndex(fi, j); jlen = strlen(dnl); if (jlen != (dnlen+bnlen+1)) continue; if (!rstreqn(dnl, rpmfiDNIndex(fi, dil), dnlen)) continue; if (!rstreqn(dnl+dnlen, rpmfiBNIndex(fi, i), bnlen)) continue; if (dnl[dnlen+bnlen] != '/' || dnl[dnlen+bnlen+1] != '\0') continue; /* This directory is included in the package. */ dnli->active[j] = 0; break; } } /* Print only once per package. */ if (!reverse) { j = 0; for (i = 0; i < dc; i++) { if (!dnli->active[i]) continue; if (j == 0) { j = 1; rpmlog(RPMLOG_DEBUG, "========== Directories not explicitly included in package:\n"); } rpmlog(RPMLOG_DEBUG, "%10d %s\n", i, rpmfiDNIndex(fi, i)); } if (j) rpmlog(RPMLOG_DEBUG, "==========\n"); } } return dnli; } /** \ingroup payload * Return next directory name (from file info). * @param dnli directory name iterator * @return next directory name */ static const char * dnlNextIterator(DNLI_t dnli) { const char * dn = NULL; if (dnli) { rpmfi fi = dnli->fi; int dc = rpmfiDC(fi); int i = -1; if (dnli->active) do { i = (!dnli->reverse ? dnli->i++ : --dnli->i); } while (i >= 0 && i < dc && !dnli->active[i]); if (i >= 0 && i < dc) dn = rpmfiDNIndex(fi, i); else i = -1; dnli->isave = i; } return dn; } int fsmNext(FSM_t fsm, fileStage nstage) { fsm->nstage = nstage; return fsmStage(fsm, fsm->nstage); } /** * Map next file path and action. * @param fsm file state machine */ static int fsmMapPath(FSM_t fsm) { rpmfi fi = fsmGetFi(fsm); /* XXX const except for fstates */ int rc = 0; int i; fsm->osuffix = NULL; fsm->nsuffix = NULL; fsm->action = FA_UNKNOWN; i = fsm->ix; if (fi && i >= 0 && i < rpmfiFC(fi)) { rpmte te = fsmGetTe(fsm); rpmfs fs = rpmteGetFileStates(te); /* XXX these should use rpmfiFFlags() etc */ fsm->action = rpmfsGetAction(fs, i); fsm->fflags = rpmfiFFlagsIndex(fi, i); /* src rpms have simple base name in payload. */ fsm->dirName = rpmfiDNIndex(fi, rpmfiDIIndex(fi, i)); fsm->baseName = rpmfiBNIndex(fi, i); if (rpmteType(te) == TR_ADDED) { switch (fsm->action) { case FA_SKIPNSTATE: rpmfsSetState(fs, i, RPMFILE_STATE_NOTINSTALLED); break; case FA_SKIPNETSHARED: rpmfsSetState(fs, i, RPMFILE_STATE_NETSHARED); break; case FA_SKIPCOLOR: rpmfsSetState(fs, i, RPMFILE_STATE_WRONGCOLOR); break; case FA_ALTNAME: if (!(fsm->fflags & RPMFILE_GHOST)) /* XXX Don't if %ghost file. */ fsm->nsuffix = SUFFIX_RPMNEW; break; case FA_SAVE: if (!(fsm->fflags & RPMFILE_GHOST)) /* XXX Don't if %ghost file. */ fsm->osuffix = SUFFIX_RPMSAVE; break; default: break; } } if (fsm->action == FA_BACKUP && !(fsm->fflags & RPMFILE_GHOST)) { /* XXX Don't if %ghost file. */ fsm->osuffix = (rpmteType(te) == TR_ADDED) ? SUFFIX_RPMORIG : SUFFIX_RPMSAVE; } if ((fsm->mapFlags & CPIO_MAP_PATH) || fsm->nsuffix) { const struct stat * st = &fsm->sb; fsm->path = _free(fsm->path); fsm->path = fsmFsPath(fsm, st, fsm->subdir, (fsm->suffix ? fsm->suffix : fsm->nsuffix)); } } return rc; } /** \ingroup payload * Save hard link in chain. * @param fsm file state machine data * @return Is chain only partially filled? */ static int saveHardLink(FSM_t fsm) { struct stat * st = &fsm->sb; int rc = 0; int ix = -1; int j; /* Find hard link set. */ for (fsm->li = fsm->links; fsm->li; fsm->li = fsm->li->next) { if (fsm->li->sb.st_ino == st->st_ino && fsm->li->sb.st_dev == st->st_dev) break; } /* New hard link encountered, add new link to set. */ if (fsm->li == NULL) { fsm->li = xcalloc(1, sizeof(*fsm->li)); fsm->li->next = NULL; fsm->li->sb = *st; /* structure assignment */ fsm->li->nlink = st->st_nlink; fsm->li->linkIndex = fsm->ix; fsm->li->createdPath = -1; fsm->li->filex = xcalloc(st->st_nlink, sizeof(fsm->li->filex[0])); memset(fsm->li->filex, -1, (st->st_nlink * sizeof(fsm->li->filex[0]))); fsm->li->nsuffix = xcalloc(st->st_nlink, sizeof(*fsm->li->nsuffix)); if (fsm->goal == FSM_PKGBUILD) fsm->li->linksLeft = st->st_nlink; if (fsm->goal == FSM_PKGINSTALL) fsm->li->linksLeft = 0; fsm->li->next = fsm->links; fsm->links = fsm->li; } if (fsm->goal == FSM_PKGBUILD) --fsm->li->linksLeft; fsm->li->filex[fsm->li->linksLeft] = fsm->ix; fsm->li->nsuffix[fsm->li->linksLeft] = fsm->nsuffix; if (fsm->goal == FSM_PKGINSTALL) fsm->li->linksLeft++; if (fsm->goal == FSM_PKGBUILD) return (fsm->li->linksLeft > 0); if (fsm->goal != FSM_PKGINSTALL) return 0; if (!(st->st_size || fsm->li->linksLeft == st->st_nlink)) return 1; /* Here come the bits, time to choose a non-skipped file name. */ { rpmfs fs = rpmteGetFileStates(fsmGetTe(fsm)); for (j = fsm->li->linksLeft - 1; j >= 0; j--) { ix = fsm->li->filex[j]; if (ix < 0 || XFA_SKIPPING(rpmfsGetAction(fs, ix))) continue; break; } } /* Are all links skipped or not encountered yet? */ if (ix < 0 || j < 0) return 1; /* XXX W2DO? */ /* Save the non-skipped file name and map index. */ fsm->li->linkIndex = j; fsm->path = _free(fsm->path); fsm->ix = ix; rc = fsmMapPath(fsm); return rc; } /** \ingroup payload * Destroy set of hard links. * @param li set of hard links * @return NULL always */ static hardLink_t freeHardLink(hardLink_t li) { if (li) { li->nsuffix = _free(li->nsuffix); /* XXX elements are shared */ li->filex = _free(li->filex); _free(li); } return NULL; } FSM_t newFSM(cpioMapFlags mapflags) { FSM_t fsm = xcalloc(1, sizeof(*fsm)); fsm->mapFlags = mapflags; return fsm; } FSM_t freeFSM(FSM_t fsm) { if (fsm) { fsm->path = _free(fsm->path); while ((fsm->li = fsm->links) != NULL) { fsm->links = fsm->li->next; fsm->li->next = NULL; fsm->li = freeHardLink(fsm->li); } fsm->dnlx = _free(fsm->dnlx); fsm->ldn = _free(fsm->ldn); fsm->iter = mapFreeIterator(fsm->iter); _free(fsm); } return NULL; } /* forward declaration*/ static int fsmMkdirs(FSM_t fsm); static int fsmCreate(FSM_t fsm) { int rc = 0; fsm->path = _free(fsm->path); fsm->opath = _free(fsm->opath); fsm->dnlx = _free(fsm->dnlx); fsm->ldn = _free(fsm->ldn); fsm->ldnalloc = fsm->ldnlen = 0; fsm->rdsize = fsm->wrsize = 0; fsm->rdbuf = fsm->rdb = _free(fsm->rdb); fsm->wrbuf = fsm->wrb = _free(fsm->wrb); if (fsm->goal == FSM_PKGINSTALL || fsm->goal == FSM_PKGBUILD) { fsm->rdsize = 8 * BUFSIZ; fsm->rdbuf = fsm->rdb = xmalloc(fsm->rdsize); fsm->wrsize = 8 * BUFSIZ; fsm->wrbuf = fsm->wrb = xmalloc(fsm->wrsize); } fsm->mkdirsdone = 0; fsm->ix = -1; fsm->links = NULL; fsm->li = NULL; errno = 0; /* XXX get rid of EBADF */ /* Detect and create directories not explicitly in package. */ if (fsm->goal == FSM_PKGINSTALL) { rc = fsmMkdirs(fsm); if (!rc) fsm->mkdirsdone = 1; } return rc; } int fsmSetup(FSM_t fsm, fileStage goal, rpmts ts, rpmte te, rpmfi fi, FD_t cfd, rpm_loff_t * archiveSize, char ** failedFile) { int rc, ec = 0; fsm->goal = goal; if (cfd != NULL) { fsm->cfd = fdLink(cfd); } fsm->cpioPos = 0; fsm->iter = mapInitIterator(ts, te, fi); fsm->digestalgo = rpmfiDigestAlgo(fi); if (fsm->goal == FSM_PKGINSTALL || fsm->goal == FSM_PKGBUILD) { void * ptr; fsm->archivePos = 0; ptr = rpmtsNotify(ts, te, RPMCALLBACK_INST_START, fsm->archivePos, fi->archiveSize); } fsm->archiveSize = archiveSize; if (fsm->archiveSize) *fsm->archiveSize = 0; fsm->failedFile = failedFile; if (fsm->failedFile) *fsm->failedFile = NULL; memset(fsm->sufbuf, 0, sizeof(fsm->sufbuf)); if (fsm->goal == FSM_PKGINSTALL) { if (ts && rpmtsGetTid(ts) != (rpm_tid_t)-1) sprintf(fsm->sufbuf, ";%08x", (unsigned)rpmtsGetTid(ts)); } ec = fsm->rc = 0; rc = fsmCreate(fsm); if (rc && !ec) ec = rc; rc = fsmUNSAFE(fsm, fsm->goal); if (rc && !ec) ec = rc; if (fsm->archiveSize && ec == 0) *fsm->archiveSize = fsm->cpioPos; /* FIX: *fsm->failedFile may be NULL */ return ec; } int fsmTeardown(FSM_t fsm) { int rc = fsm->rc; if (!rc) rc = fsmUNSAFE(fsm, FSM_DESTROY); fsm->iter = mapFreeIterator(fsm->iter); if (fsm->cfd != NULL) { fsm->cfd = fdFree(fsm->cfd); fsm->cfd = NULL; } fsm->failedFile = NULL; return rc; } static int fsmMapFContext(FSM_t fsm) { rpmts ts = fsmGetTs(fsm); struct stat * st; st = &fsm->sb; /* * Find file security context (if not disabled). */ fsm->fcontext = NULL; if (ts != NULL && !(rpmtsFlags(ts) & RPMTRANS_FLAG_NOCONTEXTS) && rpmtsSELabelHandle(ts)) { security_context_t scon = NULL; if (selabel_lookup_raw(rpmtsSELabelHandle(ts), &scon, fsm->path, st->st_mode) == 0 && scon != NULL) { fsm->fcontext = scon; } } return 0; } #if WITH_CAP static int fsmMapFCaps(FSM_t fsm) { rpmfi fi = fsmGetFi(fsm); const char *captxt = rpmfiFCapsIndex(fi, fsm->ix); fsm->fcaps = NULL; if (captxt && *captxt != '\0') { cap_t fcaps = cap_from_text(captxt); if (fcaps) { fsm->fcaps = fcaps; } } return 0; } #endif /** * Map file stat(2) info. * @param fsm file state machine */ static int fsmMapAttrs(FSM_t fsm) { struct stat * st = &fsm->sb; rpmfi fi = fsmGetFi(fsm); int i = fsm->ix; /* this check is pretty moot, rpmfi accessors check array bounds etc */ if (fi && i >= 0 && i < rpmfiFC(fi)) { mode_t finalMode = rpmfiFModeIndex(fi, i); dev_t finalRdev = rpmfiFRdevIndex(fi, i); time_t finalMtime = rpmfiFMtimeIndex(fi, i); const char *user = rpmfiFUserIndex(fi, i); const char *group = rpmfiFGroupIndex(fi, i); uid_t uid = 0; gid_t gid = 0; if (user && rpmugUid(user, &uid)) { if (fsm->goal == FSM_PKGINSTALL) rpmlog(RPMLOG_WARNING, _("user %s does not exist - using root\n"), user); finalMode &= ~S_ISUID; /* turn off suid bit */ } if (group && rpmugGid(group, &gid)) { if (fsm->goal == FSM_PKGINSTALL) rpmlog(RPMLOG_WARNING, _("group %s does not exist - using root\n"), group); finalMode &= ~S_ISGID; /* turn off sgid bit */ } if (fsm->mapFlags & CPIO_MAP_MODE) st->st_mode = (st->st_mode & S_IFMT) | (finalMode & ~S_IFMT); if (fsm->mapFlags & CPIO_MAP_TYPE) { st->st_mode = (st->st_mode & ~S_IFMT) | (finalMode & S_IFMT); if ((S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) && st->st_nlink == 0) st->st_nlink = 1; st->st_rdev = finalRdev; st->st_mtime = finalMtime; } if (fsm->mapFlags & CPIO_MAP_UID) st->st_uid = uid; if (fsm->mapFlags & CPIO_MAP_GID) st->st_gid = gid; { rpmts ts = fsmGetTs(fsm); /* * Set file digest (if not disabled). */ if (ts != NULL && !(rpmtsFlags(ts) & RPMTRANS_FLAG_NOFILEDIGEST)) { fsm->digest = rpmfiFDigestIndex(fi, i, NULL, NULL); } else { fsm->digest = NULL; } } } return 0; } /** \ingroup payload * Create file from payload stream. * @param fsm file state machine data * @return 0 on success */ static int expandRegular(FSM_t fsm) { const struct stat * st = &fsm->sb; rpm_loff_t left = st->st_size; int rc = 0; rc = fsmNext(fsm, FSM_WOPEN); if (rc) goto exit; if (st->st_size > 0 && fsm->digest != NULL) fdInitDigest(fsm->wfd, fsm->digestalgo, 0); while (left) { fsm->wrlen = (left > fsm->wrsize ? fsm->wrsize : left); rc = fsmNext(fsm, FSM_DREAD); if (rc) goto exit; rc = fsmNext(fsm, FSM_WRITE); if (rc) goto exit; left -= fsm->wrnb; /* don't call this with fileSize == fileComplete */ if (!rc && left) (void) fsmNext(fsm, FSM_NOTIFY); } if (st->st_size > 0 && fsm->digest) { void * digest = NULL; int asAscii = (fsm->digest == NULL ? 1 : 0); (void) Fflush(fsm->wfd); fdFiniDigest(fsm->wfd, fsm->digestalgo, &digest, NULL, asAscii); if (digest == NULL) { rc = CPIOERR_DIGEST_MISMATCH; goto exit; } if (fsm->digest != NULL) { size_t diglen = rpmDigestLength(fsm->digestalgo); if (memcmp(digest, fsm->digest, diglen)) rc = CPIOERR_DIGEST_MISMATCH; } else { rc = CPIOERR_DIGEST_MISMATCH; } digest = _free(digest); } exit: (void) fsmNext(fsm, FSM_WCLOSE); return rc; } static int fsmReadLink(FSM_t fsm) { int rc; /* XXX NUL terminated result in fsm->rdbuf, len in fsm->rdnb. */ rc = readlink(fsm->path, fsm->rdbuf, fsm->rdsize - 1); if (_fsm_debug && (FSM_READLINK & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, rdbuf, %d) %s\n", fileStageString(FSM_READLINK), fsm->path, (int)(fsm->rdsize -1), (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_READLINK_FAILED; else { fsm->rdnb = rc; fsm->rdbuf[fsm->rdnb] = '\0'; rc = 0; } return rc; } /** \ingroup payload * Write next item to payload stream. * @param fsm file state machine data * @param writeData should data be written? * @return 0 on success */ static int writeFile(FSM_t fsm, int writeData) { char * path = fsm->path; char * opath = fsm->opath; struct stat * st = &fsm->sb; struct stat * ost = &fsm->osb; char * symbuf = NULL; rpm_loff_t left; int rc; st->st_size = (writeData ? ost->st_size : 0); if (S_ISDIR(st->st_mode)) { st->st_size = 0; } else if (S_ISLNK(st->st_mode)) { /* * While linux puts the size of a symlink in the st_size field, * I don't think that's a specified standard. */ /* XXX NUL terminated result in fsm->rdbuf, len in fsm->rdnb. */ rc = fsmReadLink(fsm); if (rc) goto exit; st->st_size = fsm->rdnb; rstrcat(&symbuf, fsm->rdbuf); /* XXX save readlink return. */ } if (fsm->mapFlags & CPIO_MAP_ABSOLUTE) { fsm->path = rstrscat(NULL, (fsm->mapFlags & CPIO_MAP_ADDDOT) ? "." : "", fsm->dirName, fsm->baseName, NULL); } else if (fsm->mapFlags & CPIO_MAP_PATH) { rpmfi fi = fsmGetFi(fsm); fsm->path = xstrdup((fi->apath ? fi->apath[fsm->ix] : rpmfiBNIndex(fi, fsm->ix))); } rc = cpioHeaderWrite(fsm, st); _free(fsm->path); fsm->path = path; if (rc) goto exit; if (writeData && S_ISREG(st->st_mode)) { #ifdef HAVE_MMAP char * rdbuf = NULL; void * mapped = MAP_FAILED; size_t nmapped; int xx; #endif rc = fsmNext(fsm, FSM_ROPEN); if (rc) goto exit; /* XXX unbuffered mmap generates *lots* of fdio debugging */ #ifdef HAVE_MMAP nmapped = 0; mapped = mmap(NULL, st->st_size, PROT_READ, MAP_SHARED, Fileno(fsm->rfd), 0); if (mapped != MAP_FAILED) { rdbuf = fsm->rdbuf; fsm->rdbuf = (char *) mapped; fsm->rdlen = nmapped = st->st_size; #if defined(MADV_DONTNEED) xx = madvise(mapped, nmapped, MADV_DONTNEED); #endif } #endif left = st->st_size; while (left) { #ifdef HAVE_MMAP if (mapped != MAP_FAILED) { fsm->rdnb = nmapped; } else #endif { fsm->rdlen = (left > fsm->rdsize ? fsm->rdsize : left), rc = fsmNext(fsm, FSM_READ); if (rc) goto exit; } /* XXX DWRITE uses rdnb for I/O length. */ rc = fsmNext(fsm, FSM_DWRITE); if (rc) goto exit; left -= fsm->wrnb; } #ifdef HAVE_MMAP if (mapped != MAP_FAILED) { xx = msync(mapped, nmapped, MS_ASYNC); #if defined(MADV_DONTNEED) xx = madvise(mapped, nmapped, MADV_DONTNEED); #endif xx = munmap(mapped, nmapped); fsm->rdbuf = rdbuf; } #endif } else if (writeData && S_ISLNK(st->st_mode)) { /* XXX DWRITE uses rdnb for I/O length. */ strcpy(fsm->rdbuf, symbuf); /* XXX restore readlink buffer. */ fsm->rdnb = strlen(symbuf); rc = fsmNext(fsm, FSM_DWRITE); if (rc) goto exit; } rc = fsmNext(fsm, FSM_PAD); if (rc) goto exit; rc = 0; exit: if (fsm->rfd != NULL) (void) fsmNext(fsm, FSM_RCLOSE); fsm->opath = opath; fsm->path = path; free(symbuf); return rc; } /** \ingroup payload * Write set of linked files to payload stream. * @param fsm file state machine data * @return 0 on success */ static int writeLinkedFile(FSM_t fsm) { char * path = fsm->path; const char * nsuffix = fsm->nsuffix; int iterIndex = fsm->ix; int ec = 0; int rc; int i; fsm->path = NULL; fsm->nsuffix = NULL; fsm->ix = -1; for (i = fsm->li->nlink - 1; i >= 0; i--) { if (fsm->li->filex[i] < 0) continue; fsm->ix = fsm->li->filex[i]; rc = fsmMapPath(fsm); /* Write data after last link. */ rc = writeFile(fsm, (i == 0)); if (fsm->failedFile && rc != 0 && *fsm->failedFile == NULL) { ec = rc; *fsm->failedFile = xstrdup(fsm->path); } fsm->path = _free(fsm->path); fsm->li->filex[i] = -1; } fsm->ix = iterIndex; fsm->nsuffix = nsuffix; fsm->path = path; return ec; } static int fsmStat(FSM_t fsm, int dolstat) { int rc; if (dolstat){ rc = lstat(fsm->path, &fsm->osb); } else { rc = stat(fsm->path, &fsm->osb); } if (_fsm_debug && (FSM_STAT & FSM_SYSCALL) && rc && errno != ENOENT) rpmlog(RPMLOG_DEBUG, " %8s (%s, ost) %s\n", fileStageString(dolstat ? FSM_LSTAT : FSM_STAT), fsm->path, (rc < 0 ? strerror(errno) : "")); if (rc < 0) { rc = (errno == ENOENT ? CPIOERR_ENOENT : CPIOERR_LSTAT_FAILED); memset(&fsm->osb, 0, sizeof(fsm->osb)); /* XXX s390x hackery */ } return rc; } static int fsmVerify(FSM_t fsm); /** \ingroup payload * Create pending hard links to existing file. * @param fsm file state machine data * @return 0 on success */ static int fsmMakeLinks(FSM_t fsm) { char * path = fsm->path; char * opath = fsm->opath; const char * nsuffix = fsm->nsuffix; int iterIndex = fsm->ix; int ec = 0; int rc; int i; fsm->path = NULL; fsm->opath = NULL; fsm->nsuffix = NULL; fsm->ix = -1; fsm->ix = fsm->li->filex[fsm->li->createdPath]; rc = fsmMapPath(fsm); fsm->opath = fsm->path; fsm->path = NULL; for (i = 0; i < fsm->li->nlink; i++) { if (fsm->li->filex[i] < 0) continue; if (fsm->li->createdPath == i) continue; fsm->ix = fsm->li->filex[i]; fsm->path = _free(fsm->path); rc = fsmMapPath(fsm); if (XFA_SKIPPING(fsm->action)) continue; rc = fsmVerify(fsm); if (!rc) continue; if (!(rc == CPIOERR_ENOENT)) break; /* XXX link(fsm->opath, fsm->path) */ rc = link(fsm->opath, fsm->path); if (_fsm_debug && (FSM_LINK & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, %s) %s\n", fileStageString(FSM_LINK), fsm->opath, fsm->path, (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_LINK_FAILED; if (fsm->failedFile && rc != 0 && *fsm->failedFile == NULL) { ec = rc; *fsm->failedFile = xstrdup(fsm->path); } fsm->li->linksLeft--; } fsm->path = _free(fsm->path); fsm->opath = _free(fsm->opath); fsm->ix = iterIndex; fsm->nsuffix = nsuffix; fsm->path = path; fsm->opath = opath; return ec; } /** \ingroup payload * Commit hard linked file set atomically. * @param fsm file state machine data * @return 0 on success */ static int fsmCommitLinks(FSM_t fsm) { char * path = fsm->path; const char * nsuffix = fsm->nsuffix; int iterIndex = fsm->ix; struct stat * st = &fsm->sb; int rc = 0; nlink_t i; fsm->path = NULL; fsm->nsuffix = NULL; fsm->ix = -1; for (fsm->li = fsm->links; fsm->li; fsm->li = fsm->li->next) { if (fsm->li->sb.st_ino == st->st_ino && fsm->li->sb.st_dev == st->st_dev) break; } for (i = 0; i < fsm->li->nlink; i++) { if (fsm->li->filex[i] < 0) continue; fsm->ix = fsm->li->filex[i]; rc = fsmMapPath(fsm); if (!XFA_SKIPPING(fsm->action)) rc = fsmNext(fsm, FSM_COMMIT); fsm->path = _free(fsm->path); fsm->li->filex[i] = -1; } fsm->ix = iterIndex; fsm->nsuffix = nsuffix; fsm->path = path; return rc; } static int fsmRmdir(FSM_t fsm) { int rc = rmdir(fsm->path); if (_fsm_debug && (FSM_RMDIR & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s) %s\n", fileStageString(FSM_RMDIR), fsm->path, (rc < 0 ? strerror(errno) : "")); if (rc < 0) switch (errno) { case ENOENT: rc = CPIOERR_ENOENT; break; case ENOTEMPTY: rc = CPIOERR_ENOTEMPTY; break; default: rc = CPIOERR_RMDIR_FAILED; break; } return rc; } static int fsmLsetfcon(FSM_t fsm) { int rc = 0; if (fsm->fcontext == NULL || *fsm->fcontext == '\0' || rstreq(fsm->fcontext, "<>")) return rc; rc = lsetfilecon(fsm->path, (security_context_t)fsm->fcontext); if (_fsm_debug && (FSM_LSETFCON & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, %s) %s\n", fileStageString(FSM_LSETFCON), fsm->path, fsm->fcontext, (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = (errno == EOPNOTSUPP ? 0 : CPIOERR_LSETFCON_FAILED); return rc; } static int fsmMkdir(FSM_t fsm) { int rc = mkdir(fsm->path, (fsm->sb.st_mode & 07777)); if (_fsm_debug && (FSM_MKDIR & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, 0%04o) %s\n", fileStageString(FSM_MKDIR), fsm->path, (unsigned)(fsm->sb.st_mode & 07777), (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_MKDIR_FAILED; return rc; } /** * Create (if necessary) directories not explicitly included in package. * @param fsm file state machine data * @return 0 on success */ static int fsmMkdirs(FSM_t fsm) { struct stat * st = &fsm->sb; struct stat * ost = &fsm->osb; char * path = fsm->path; const char *dpath; mode_t st_mode = st->st_mode; DNLI_t dnli = dnlInitIterator(fsm, 0); int dc = dnlCount(dnli); int rc = 0; int i; rpmts ts = fsmGetTs(fsm); security_context_t scon = NULL; fsm->dnlx = (dc ? xcalloc(dc, sizeof(*fsm->dnlx)) : NULL); if (fsm->dnlx != NULL) while ((dpath = dnlNextIterator(dnli)) != NULL) { size_t dnlen = strlen(dpath); char * te, dn[dnlen+1]; dc = dnlIndex(dnli); if (dc < 0) continue; fsm->dnlx[dc] = dnlen; if (dnlen <= 1) continue; if (dnlen <= fsm->ldnlen && rstreq(dpath, fsm->ldn)) continue; /* Copy as we need to modify the string */ (void) stpcpy(dn, dpath); fsm->path = dn; /* Assume '/' directory exists, "mkdir -p" for others if non-existent */ for (i = 1, te = dn + 1; *te != '\0'; te++, i++) { if (*te != '/') continue; *te = '\0'; /* Already validated? */ if (i < fsm->ldnlen && (fsm->ldn[i] == '/' || fsm->ldn[i] == '\0') && rstreqn(fsm->path, fsm->ldn, i)) { *te = '/'; /* Move pre-existing path marker forward. */ fsm->dnlx[dc] = (te - dn); continue; } /* Validate next component of path. */ rc = fsmStat(fsm, 1); /* lstat */ *te = '/'; /* Directory already exists? */ if (rc == 0 && S_ISDIR(ost->st_mode)) { /* Move pre-existing path marker forward. */ fsm->dnlx[dc] = (te - dn); } else if (rc == CPIOERR_ENOENT) { *te = '\0'; st->st_mode = S_IFDIR | (_dirPerms & 07777); rc = fsmMkdir(fsm); if (!rc) { /* XXX FIXME? only new dir will have context set. */ /* Get file security context from patterns. */ if (!(rpmtsFlags(ts) & RPMTRANS_FLAG_NOCONTEXTS) && rpmtsSELabelHandle(ts)) { if (selabel_lookup_raw(rpmtsSELabelHandle(ts), &scon, fsm->path, st->st_mode) == 0 && scon != NULL) { fsm->fcontext = scon; rc = fsmLsetfcon(fsm); } } if (fsm->fcontext == NULL) rpmlog(RPMLOG_DEBUG, "%s directory created with perms %04o, no context.\n", fsm->path, (unsigned)(st->st_mode & 07777)); else { rpmlog(RPMLOG_DEBUG, "%s directory created with perms %04o, context %s.\n", fsm->path, (unsigned)(st->st_mode & 07777), fsm->fcontext); freecon(fsm->fcontext); } fsm->fcontext = NULL; } *te = '/'; } if (rc) break; } if (rc) break; /* Save last validated path. */ /* FIX: ldn/path annotations ? */ if (fsm->ldnalloc < (dnlen + 1)) { fsm->ldnalloc = dnlen + 100; fsm->ldn = xrealloc(fsm->ldn, fsm->ldnalloc); } if (fsm->ldn != NULL) { /* XXX can't happen */ strcpy(fsm->ldn, fsm->path); fsm->ldnlen = dnlen; } } dnli = dnlFreeIterator(dnli); fsm->path = path; st->st_mode = st_mode; /* XXX restore st->st_mode */ /* FIX: ldn/path annotations ? */ return rc; } static void removeSBITS(const char *path) { struct stat stb; if (lstat(path, &stb) == 0 && S_ISREG(stb.st_mode)) { if ((stb.st_mode & 06000) != 0) { (void) chmod(path, stb.st_mode & 0777); } #if WITH_CAP if (stb.st_mode & (S_IXUSR|S_IXGRP|S_IXOTH)) { (void) cap_set_file(path, NULL); } #endif } } /********************************************************************/ static int fsmInit(FSM_t fsm) { int rc = 0; fsm->path = _free(fsm->path); fsm->postpone = 0; fsm->diskchecked = fsm->exists = 0; fsm->subdir = NULL; fsm->suffix = (fsm->sufbuf[0] != '\0' ? fsm->sufbuf : NULL); fsm->action = FA_UNKNOWN; fsm->osuffix = NULL; fsm->nsuffix = NULL; if (fsm->goal == FSM_PKGINSTALL) { /* Read next header from payload, checking for end-of-payload. */ rc = fsmUNSAFE(fsm, FSM_NEXT); } if (rc) return rc; /* Identify mapping index. */ fsm->ix = ((fsm->goal == FSM_PKGINSTALL) ? mapFind(fsm->iter, fsm->path) : mapNextIterator(fsm->iter)); /* Detect end-of-loop and/or mapping error. */ if (fsm->ix < 0) { if (fsm->goal == FSM_PKGINSTALL) { #if 0 rpmlog(RPMLOG_WARNING, _("archive file %s was not found in header file list\n"), fsm->path); #endif if (fsm->failedFile && *fsm->failedFile == NULL) *fsm->failedFile = xstrdup(fsm->path); rc = CPIOERR_UNMAPPED_FILE; } else { rc = CPIOERR_HDR_TRAILER; } return rc; } /* On non-install, mode must be known so that dirs don't get suffix. */ if (fsm->goal != FSM_PKGINSTALL) { rpmfi fi = fsmGetFi(fsm); fsm->sb.st_mode = rpmfiFModeIndex(fi, fsm->ix); } /* Generate file path. */ rc = fsmMapPath(fsm); if (rc) return rc; /* Perform lstat/stat for disk file. */ if (fsm->path != NULL && !(fsm->goal == FSM_PKGINSTALL && S_ISREG(fsm->sb.st_mode))) { rc = fsmStat(fsm, (!(fsm->mapFlags & CPIO_FOLLOW_SYMLINKS))); if (rc == CPIOERR_ENOENT) { // errno = saveerrno; XXX temporary commented out rc = 0; fsm->exists = 0; } else if (rc == 0) { fsm->exists = 1; } } else { /* Skip %ghost files on build. */ fsm->exists = 0; } fsm->diskchecked = 1; if (rc) return rc; /* On non-install, the disk file stat is what's remapped. */ if (fsm->goal != FSM_PKGINSTALL) fsm->sb = fsm->osb; /* structure assignment */ /* Remap file perms, owner, and group. */ rc = fsmMapAttrs(fsm); if (rc) return rc; fsm->postpone = XFA_SKIPPING(fsm->action); if (fsm->goal == FSM_PKGINSTALL || fsm->goal == FSM_PKGBUILD) { /* FIX: saveHardLink can modify fsm */ if (S_ISREG(fsm->sb.st_mode) && fsm->sb.st_nlink > 1) fsm->postpone = saveHardLink(fsm); } return rc; } static int fsmUnlink(FSM_t fsm) { int rc = 0; if (fsm->mapFlags & CPIO_SBIT_CHECK) removeSBITS(fsm->path); rc = unlink(fsm->path); if (_fsm_debug && (FSM_UNLINK & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s) %s\n", fileStageString(FSM_UNLINK), fsm->path, (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = (errno == ENOENT ? CPIOERR_ENOENT : CPIOERR_UNLINK_FAILED); return rc; } static int fsmRename(FSM_t fsm) { if (fsm->mapFlags & CPIO_SBIT_CHECK) removeSBITS(fsm->path); int rc = rename(fsm->opath, fsm->path); #if defined(ETXTBSY) && defined(__HPUX__) if (rc && errno == ETXTBSY) { char *path = NULL; rstrscat(&path, fsm->path, "-RPMDELETE", NULL); /* * XXX HP-UX (and other os'es) don't permit rename to busy * XXX files. */ rc = rename(fsm->path, path); if (!rc) rc = rename(fsm->opath, fsm->path); free(path); } #endif if (_fsm_debug && (FSM_RENAME & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, %s) %s\n", fileStageString(FSM_RENAME), fsm->opath, fsm->path, (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_RENAME_FAILED; return rc; } static int fsmChown(FSM_t fsm) { int rc = chown(fsm->path, fsm->sb.st_uid, fsm->sb.st_gid); if (rc < 0) { struct stat st; if (lstat(fsm->path, &st) == 0 && st.st_uid == fsm->sb.st_uid && st.st_gid == fsm->sb.st_gid) rc = 0; } if (_fsm_debug && (FSM_CHOWN & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, %d, %d) %s\n", fileStageString(FSM_CHOWN), fsm->path, (int)fsm->sb.st_uid, (int)fsm->sb.st_gid, (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_CHOWN_FAILED; return rc; } static int fsmLChown(FSM_t fsm) { int rc = 0; rc = lchown(fsm->path, fsm->sb.st_uid, fsm->sb.st_gid); if (rc < 0) { struct stat st; if (lstat(fsm->path, &st) == 0 && st.st_uid == fsm->sb.st_uid && st.st_gid == fsm->sb.st_gid) rc = 0; } if (_fsm_debug && (FSM_LCHOWN & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, %d, %d) %s\n", fileStageString(FSM_LCHOWN), fsm->path, (int)fsm->sb.st_uid, (int)fsm->sb.st_gid, (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_CHOWN_FAILED; return rc; } static int fsmChmod(FSM_t fsm) { int rc = chmod(fsm->path, (fsm->sb.st_mode & 07777)); if (rc < 0) { struct stat st; if (lstat(fsm->path, &st) == 0 && (st.st_mode & 07777) == (fsm->sb.st_mode & 07777)) rc = 0; } if (_fsm_debug && (FSM_CHMOD & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, 0%04o) %s\n", fileStageString(FSM_CHMOD), fsm->path, (unsigned)(fsm->sb.st_mode & 07777), (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_CHMOD_FAILED; return rc; } static int fsmUtime(FSM_t fsm) { int rc = 0; struct utimbuf stamp; stamp.actime = fsm->sb.st_mtime; stamp.modtime = fsm->sb.st_mtime; rc = utime(fsm->path, &stamp); if (_fsm_debug && (FSM_UTIME & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, 0x%x) %s\n", fileStageString(FSM_UTIME), fsm->path, (unsigned)fsm->sb.st_mtime, (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_UTIME_FAILED; return rc; } #if WITH_CAP static int fsmSetcap(FSM_t fsm) { int rc = cap_set_file(fsm->path, fsm->fcaps); if (rc < 0) { rc = CPIOERR_SETCAP_FAILED; } return rc; } #endif /* WITH_CAP */ static int fsmVerify(FSM_t fsm) { int rc; struct stat * st = &fsm->sb; struct stat * ost = &fsm->osb; int saveerrno = errno; if (fsm->diskchecked && !fsm->exists) { return CPIOERR_ENOENT; } if (S_ISREG(st->st_mode)) { /* * XXX HP-UX (and other os'es) don't permit unlink on busy * XXX files. */ fsm->opath = fsm->path; fsm->path = rstrscat(NULL, fsm->path, "-RPMDELETE", NULL); rc = fsmRename(fsm); if (!rc) (void) fsmUnlink(fsm); else rc = CPIOERR_UNLINK_FAILED; _free(fsm->path); fsm->path = fsm->opath; fsm->opath = NULL; return (rc ? rc : CPIOERR_ENOENT); /* XXX HACK */ } else if (S_ISDIR(st->st_mode)) { if (S_ISDIR(ost->st_mode)) return 0; if (S_ISLNK(ost->st_mode)) { rc = fsmStat(fsm, 0); if (rc == CPIOERR_ENOENT) rc = 0; if (rc) return rc; errno = saveerrno; if (S_ISDIR(ost->st_mode)) return 0; } } else if (S_ISLNK(st->st_mode)) { if (S_ISLNK(ost->st_mode)) { /* XXX NUL terminated result in fsm->rdbuf, len in fsm->rdnb. */ rc = fsmReadLink(fsm); errno = saveerrno; if (rc) return rc; if (rstreq(fsm->opath, fsm->rdbuf)) return 0; } } else if (S_ISFIFO(st->st_mode)) { if (S_ISFIFO(ost->st_mode)) return 0; } else if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) { if ((S_ISCHR(ost->st_mode) || S_ISBLK(ost->st_mode)) && (ost->st_rdev == st->st_rdev)) return 0; } else if (S_ISSOCK(st->st_mode)) { if (S_ISSOCK(ost->st_mode)) return 0; } /* XXX shouldn't do this with commit/undo. */ rc = 0; if (fsm->stage == FSM_PROCESS) rc = fsmUnlink(fsm); if (rc == 0) rc = CPIOERR_ENOENT; return (rc ? rc : CPIOERR_ENOENT); /* XXX HACK */ } /********************************************************************/ #define IS_DEV_LOG(_x) \ ((_x) != NULL && strlen(_x) >= (sizeof("/dev/log")-1) && \ rstreqn((_x), "/dev/log", sizeof("/dev/log")-1) && \ ((_x)[sizeof("/dev/log")-1] == '\0' || \ (_x)[sizeof("/dev/log")-1] == ';')) /** * File state machine driver. * @param fsm file state machine * @param stage next stage * @return 0 on success */ static int fsmStage(FSM_t fsm, fileStage stage) { #ifdef UNUSED fileStage prevStage = fsm->stage; const char * const prev = fileStageString(prevStage); #endif static int modulo = 4; const char * const cur = fileStageString(stage); struct stat * st = &fsm->sb; struct stat * ost = &fsm->osb; int saveerrno = errno; int rc = fsm->rc; rpm_loff_t left; #define _fafilter(_a) \ (!((_a) == FA_CREATE || (_a) == FA_ERASE || (_a) == FA_COPYIN || (_a) == FA_COPYOUT) \ ? fileActionString(_a) : "") if (stage & FSM_DEAD) { /* do nothing */ } else if (stage & FSM_INTERNAL) { if (_fsm_debug && !(stage & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s %06o%3d (%4d,%4d)%10d %s %s\n", cur, (unsigned)st->st_mode, (int)st->st_nlink, (int)st->st_uid, (int)st->st_gid, (int)st->st_size, (fsm->path ? fsm->path : ""), _fafilter(fsm->action)); } else { fsm->stage = stage; if (_fsm_debug || !(stage & FSM_VERBOSE)) rpmlog(RPMLOG_DEBUG, "%-8s %06o%3d (%4d,%4d)%10d %s %s\n", cur, (unsigned)st->st_mode, (int)st->st_nlink, (int)st->st_uid, (int)st->st_gid, (int)st->st_size, (fsm->path ? fsm->path : ""), _fafilter(fsm->action)); } #undef _fafilter switch (stage) { case FSM_UNKNOWN: break; case FSM_PKGINSTALL: while (1) { /* Clean fsm, free'ing memory. Read next archive header. */ rc = fsmInit(fsm); /* Exit on end-of-payload. */ if (rc == CPIOERR_HDR_TRAILER) { rc = 0; break; } /* Exit on error. */ if (rc) { fsm->postpone = 1; (void) fsmNext(fsm, FSM_UNDO); break; } /* Extract file from archive. */ rc = fsmNext(fsm, FSM_PROCESS); if (rc) { (void) fsmNext(fsm, FSM_UNDO); break; } /* Notify on success. */ (void) fsmNext(fsm, FSM_NOTIFY); rc = fsmNext(fsm, FSM_FINI); if (rc) { break; } } break; case FSM_PKGERASE: while (1) { /* Clean fsm, free'ing memory. */ rc = fsmInit(fsm); /* Exit on end-of-payload. */ if (rc == CPIOERR_HDR_TRAILER) { rc = 0; break; } /* Rename/erase next item. */ if (fsmNext(fsm, FSM_FINI)) break; } break; case FSM_PKGBUILD: while (1) { rc = fsmInit(fsm); /* Exit on end-of-payload. */ if (rc == CPIOERR_HDR_TRAILER) { rc = 0; break; } /* Exit on error. */ if (rc) { fsm->postpone = 1; (void) fsmNext(fsm, FSM_UNDO); break; } /* Copy file into archive. */ rc = fsmNext(fsm, FSM_PROCESS); if (rc) { (void) fsmNext(fsm, FSM_UNDO); break; } /* Notify on success. */ (void) fsmNext(fsm, FSM_NOTIFY); if (fsmNext(fsm, FSM_FINI)) break; } /* Flush partial sets of hard linked files. */ if (!(fsm->mapFlags & CPIO_ALL_HARDLINKS)) { nlink_t i, nlink; int j; while ((fsm->li = fsm->links) != NULL) { fsm->links = fsm->li->next; fsm->li->next = NULL; /* Re-calculate link count for archive header. */ for (j = -1, nlink = 0, i = 0; i < fsm->li->nlink; i++) { if (fsm->li->filex[i] < 0) continue; nlink++; if (j == -1) j = i; } /* XXX force the contents out as well. */ if (j != 0) { fsm->li->filex[0] = fsm->li->filex[j]; fsm->li->filex[j] = -1; } fsm->li->sb.st_nlink = nlink; fsm->sb = fsm->li->sb; /* structure assignment */ fsm->osb = fsm->sb; /* structure assignment */ if (!rc) rc = writeLinkedFile(fsm); fsm->li = freeHardLink(fsm->li); } } if (!rc) rc = cpioTrailerWrite(fsm); break; case FSM_PROCESS: if (fsm->postpone) { if (fsm->goal == FSM_PKGINSTALL) rc = fsmNext(fsm, FSM_EAT); break; } if (fsm->goal == FSM_PKGBUILD) { if (fsm->fflags & RPMFILE_GHOST) /* XXX Don't if %ghost file. */ break; if (S_ISREG(st->st_mode) && st->st_nlink > 1) { hardLink_t li, prev; if (!(fsm->mapFlags & CPIO_ALL_HARDLINKS)) break; rc = writeLinkedFile(fsm); if (rc) break; /* W2DO? */ for (li = fsm->links, prev = NULL; li; prev = li, li = li->next) if (li == fsm->li) break; if (prev == NULL) fsm->links = fsm->li->next; else prev->next = fsm->li->next; fsm->li->next = NULL; fsm->li = freeHardLink(fsm->li); } else { rc = writeFile(fsm, 1); } break; } if (fsm->goal != FSM_PKGINSTALL) break; if (S_ISREG(st->st_mode)) { char * path = fsm->path; if (fsm->osuffix) fsm->path = fsmFsPath(fsm, st, NULL, NULL); rc = fsmVerify(fsm); if (rc == 0 && fsm->osuffix) { char * opath = fsm->opath; fsm->opath = fsm->path; fsm->path = fsmFsPath(fsm, st, NULL, fsm->osuffix); rc = fsmRename(fsm); if (!rc) rpmlog(RPMLOG_WARNING, _("%s saved as %s\n"), (fsm->opath ? fsm->opath : ""), (fsm->path ? fsm->path : "")); fsm->path = _free(fsm->path); fsm->opath = opath; } fsm->path = path; if (!(rc == CPIOERR_ENOENT)) return rc; rc = expandRegular(fsm); } else if (S_ISDIR(st->st_mode)) { mode_t st_mode = st->st_mode; rc = fsmVerify(fsm); if (rc == CPIOERR_ENOENT) { st->st_mode &= ~07777; /* XXX abuse st->st_mode */ st->st_mode |= 00700; rc = fsmMkdir(fsm); st->st_mode = st_mode; /* XXX restore st->st_mode */ } } else if (S_ISLNK(st->st_mode)) { char * opath = fsm->opath; if ((st->st_size + 1) > fsm->rdsize) { rc = CPIOERR_HDR_SIZE; break; } fsm->wrlen = st->st_size; rc = fsmNext(fsm, FSM_DREAD); if (!rc && fsm->rdnb != fsm->wrlen) rc = CPIOERR_READ_FAILED; if (rc) break; fsm->wrbuf[st->st_size] = '\0'; /* XXX symlink(fsm->opath, fsm->path) */ fsm->opath = fsm->wrbuf; rc = fsmVerify(fsm); if (rc == CPIOERR_ENOENT) { rc = symlink(fsm->opath, fsm->path); if (_fsm_debug && (FSM_SYMLINK & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, %s) %s\n", fileStageString(FSM_SYMLINK), fsm->opath, fsm->path, (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_SYMLINK_FAILED; } fsm->opath = opath; /* XXX restore fsm->path */ } else if (S_ISFIFO(st->st_mode)) { mode_t st_mode = st->st_mode; /* This mimics cpio S_ISSOCK() behavior but probably isnt' right */ rc = fsmVerify(fsm); if (rc == CPIOERR_ENOENT) { st->st_mode = 0000; /* XXX abuse st->st_mode */ rc = mkfifo(fsm->path, (st->st_mode & 07777)); if (_fsm_debug && (FSM_MKFIFO & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, 0%04o) %s\n", fileStageString(FSM_MKFIFO), fsm->path, (unsigned)(st->st_mode & 07777), (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_MKFIFO_FAILED; st->st_mode = st_mode; /* XXX restore st->st_mode */ } } else if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode) || S_ISSOCK(st->st_mode)) { rc = fsmVerify(fsm); if (rc == CPIOERR_ENOENT) { /* FIX: check S_IFIFO or dev != 0 */ rc = mknod(fsm->path, (fsm->sb.st_mode & ~07777), fsm->sb.st_rdev); if (_fsm_debug && (FSM_MKNOD & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, 0%o, 0x%x) %s\n", fileStageString(FSM_MKNOD), fsm->path, (unsigned)(fsm->sb.st_mode & ~07777), (unsigned)fsm->sb.st_rdev, (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_MKNOD_FAILED; } } else { /* XXX Special case /dev/log, which shouldn't be packaged anyways */ if (!IS_DEV_LOG(fsm->path)) rc = CPIOERR_UNKNOWN_FILETYPE; } if (S_ISREG(st->st_mode) && st->st_nlink > 1) { fsm->li->createdPath = fsm->li->linkIndex; rc = fsmMakeLinks(fsm); } break; case FSM_POST: break; case FSM_MKLINKS: rc = fsmMakeLinks(fsm); break; case FSM_NOTIFY: /* XXX move from fsm to psm -> tsm */ if (fsm->goal == FSM_PKGINSTALL || fsm->goal == FSM_PKGBUILD) { rpmts ts = fsmGetTs(fsm); rpmte te = fsmGetTe(fsm); rpmfi fi = fsmGetFi(fsm); void * ptr; if (fsm->cpioPos > fsm->archivePos) { fsm->archivePos = fsm->cpioPos; ptr = rpmtsNotify(ts, te, RPMCALLBACK_INST_PROGRESS, fsm->archivePos, fi->archiveSize); } } break; case FSM_UNDO: if (fsm->postpone) break; if (fsm->goal == FSM_PKGINSTALL) { /* XXX only erase if temp fn w suffix is in use */ if (fsm->sufbuf[0] != '\0') { if (S_ISDIR(st->st_mode)) { (void) fsmRmdir(fsm); } else { (void) fsmUnlink(fsm); } } errno = saveerrno; } if (fsm->failedFile && *fsm->failedFile == NULL) *fsm->failedFile = xstrdup(fsm->path); break; case FSM_FINI: if (!fsm->postpone) { if (fsm->goal == FSM_PKGINSTALL) rc = ((S_ISREG(st->st_mode) && st->st_nlink > 1) ? fsmCommitLinks(fsm) : fsmNext(fsm, FSM_COMMIT)); if (fsm->goal == FSM_PKGERASE) rc = fsmNext(fsm, FSM_COMMIT); } fsm->path = _free(fsm->path); fsm->opath = _free(fsm->opath); memset(st, 0, sizeof(*st)); memset(ost, 0, sizeof(*ost)); break; case FSM_COMMIT: /* Rename pre-existing modified or unmanaged file. */ if (fsm->osuffix && fsm->diskchecked && (fsm->exists || (fsm->goal == FSM_PKGINSTALL && S_ISREG(st->st_mode)))) { char * opath = fsm->opath; char * path = fsm->path; fsm->opath = fsmFsPath(fsm, st, NULL, NULL); fsm->path = fsmFsPath(fsm, st, NULL, fsm->osuffix); rc = fsmRename(fsm); if (!rc) { rpmlog(RPMLOG_WARNING, _("%s saved as %s\n"), (fsm->opath ? fsm->opath : ""), (fsm->path ? fsm->path : "")); } fsm->path = _free(fsm->path); fsm->path = path; fsm->opath = _free(fsm->opath); fsm->opath = opath; } /* Remove erased files. */ if (fsm->goal == FSM_PKGERASE) { if (fsm->action == FA_ERASE) { rpmte te = fsmGetTe(fsm); if (S_ISDIR(st->st_mode)) { rc = fsmRmdir(fsm); if (!rc) break; switch (rc) { case CPIOERR_ENOENT: /* XXX rmdir("/") linux 2.2.x kernel hack */ case CPIOERR_ENOTEMPTY: /* XXX make sure that build side permits %missingok on directories. */ if (fsm->fflags & RPMFILE_MISSINGOK) break; /* XXX common error message. */ rpmlog( (strict_erasures ? RPMLOG_ERR : RPMLOG_DEBUG), _("%s rmdir of %s failed: Directory not empty\n"), rpmteTypeString(te), fsm->path); break; default: rpmlog( (strict_erasures ? RPMLOG_ERR : RPMLOG_DEBUG), _("%s rmdir of %s failed: %s\n"), rpmteTypeString(te), fsm->path, strerror(errno)); break; } } else { rc = fsmUnlink(fsm); if (!rc) break; switch (rc) { case CPIOERR_ENOENT: if (fsm->fflags & RPMFILE_MISSINGOK) break; default: rpmlog( (strict_erasures ? RPMLOG_ERR : RPMLOG_DEBUG), _("%s unlink of %s failed: %s\n"), rpmteTypeString(te), fsm->path, strerror(errno)); break; } } } /* XXX Failure to remove is not (yet) cause for failure. */ if (!strict_erasures) rc = 0; break; } /* XXX Special case /dev/log, which shouldn't be packaged anyways */ if (!S_ISSOCK(st->st_mode) && !IS_DEV_LOG(fsm->path)) { /* Rename temporary to final file name. */ if (!S_ISDIR(st->st_mode) && (fsm->subdir || fsm->suffix || fsm->nsuffix)) { fsm->opath = fsm->path; fsm->path = fsmFsPath(fsm, st, NULL, fsm->nsuffix); rc = fsmRename(fsm); if (!rc && fsm->nsuffix) { char * opath = fsmFsPath(fsm, st, NULL, NULL); rpmlog(RPMLOG_WARNING, _("%s created as %s\n"), (opath ? opath : ""), (fsm->path ? fsm->path : "")); opath = _free(opath); } fsm->opath = _free(fsm->opath); } /* * Set file security context (if not disabled). */ if (!rc && !getuid()) { rc = fsmMapFContext(fsm); if (!rc) { rc = fsmLsetfcon(fsm); freecon(fsm->fcontext); } fsm->fcontext = NULL; } if (S_ISLNK(st->st_mode)) { if (!rc && !getuid()) rc = fsmLChown(fsm); } else { if (!rc && !getuid()) rc = fsmChown(fsm); if (!rc) rc = fsmChmod(fsm); if (!rc) { time_t mtime = st->st_mtime; rpmfi fi = fsmGetFi(fsm); st->st_mtime = rpmfiFMtimeIndex(fi, fsm->ix); rc = fsmUtime(fsm); st->st_mtime = mtime; /* utime error is not critical for directories */ if (rc && S_ISDIR(st->st_mode)) rc = 0; } #if WITH_CAP if (!rc && !S_ISDIR(st->st_mode) && !getuid()) { rc = fsmMapFCaps(fsm); if (!rc && fsm->fcaps) { rc = fsmSetcap(fsm); cap_free(fsm->fcaps); } fsm->fcaps = NULL; } #endif /* WITH_CAP */ } } /* Notify on success. */ if (!rc) rc = fsmNext(fsm, FSM_NOTIFY); else if (fsm->failedFile && *fsm->failedFile == NULL) { *fsm->failedFile = fsm->path; fsm->path = NULL; } break; case FSM_DESTROY: fsm->path = _free(fsm->path); /* Check for hard links missing from payload. */ while ((fsm->li = fsm->links) != NULL) { fsm->links = fsm->li->next; fsm->li->next = NULL; if (fsm->goal == FSM_PKGINSTALL && fsm->li->linksLeft) { for (nlink_t i = 0 ; i < fsm->li->linksLeft; i++) { if (fsm->li->filex[i] < 0) continue; rc = CPIOERR_MISSING_HARDLINK; if (fsm->failedFile && *fsm->failedFile == NULL) { fsm->ix = fsm->li->filex[i]; if (!fsmMapPath(fsm)) { /* Out-of-sync hardlinks handled as sub-state */ *fsm->failedFile = fsm->path; fsm->path = NULL; } } break; } } if (fsm->goal == FSM_PKGBUILD && (fsm->mapFlags & CPIO_ALL_HARDLINKS)) { rc = CPIOERR_MISSING_HARDLINK; } fsm->li = freeHardLink(fsm->li); } fsm->ldn = _free(fsm->ldn); fsm->ldnalloc = fsm->ldnlen = 0; fsm->rdbuf = fsm->rdb = _free(fsm->rdb); fsm->wrbuf = fsm->wrb = _free(fsm->wrb); break; case FSM_NEXT: rc = fsmNext(fsm, FSM_POS); if (!rc) rc = cpioHeaderRead(fsm, st); /* Read next payload header. */ if (rc) break; if (rstreq(fsm->path, CPIO_TRAILER)) { /* Detect end-of-payload. */ fsm->path = _free(fsm->path); rc = CPIOERR_HDR_TRAILER; } if (!rc) rc = fsmNext(fsm, FSM_POS); break; case FSM_EAT: for (left = st->st_size; left > 0; left -= fsm->rdnb) { fsm->wrlen = (left > fsm->wrsize ? fsm->wrsize : left); rc = fsmNext(fsm, FSM_DREAD); if (rc) break; } break; case FSM_POS: left = (modulo - (fsm->cpioPos % modulo)) % modulo; if (left) { fsm->wrlen = left; (void) fsmNext(fsm, FSM_DREAD); } break; case FSM_PAD: left = (modulo - (fsm->cpioPos % modulo)) % modulo; if (left) { memset(fsm->rdbuf, 0, left); /* XXX DWRITE uses rdnb for I/O length. */ fsm->rdnb = left; (void) fsmNext(fsm, FSM_DWRITE); } break; case FSM_DREAD: fsm->rdnb = Fread(fsm->wrbuf, sizeof(*fsm->wrbuf), fsm->wrlen, fsm->cfd); if (_fsm_debug && (stage & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, %d, cfd)\trdnb %d\n", cur, (fsm->wrbuf == fsm->wrb ? "wrbuf" : "mmap"), (int)fsm->wrlen, (int)fsm->rdnb); if (fsm->rdnb != fsm->wrlen || Ferror(fsm->cfd)) rc = CPIOERR_READ_FAILED; if (fsm->rdnb > 0) fsm->cpioPos += fsm->rdnb; break; case FSM_DWRITE: fsm->wrnb = Fwrite(fsm->rdbuf, sizeof(*fsm->rdbuf), fsm->rdnb, fsm->cfd); if (_fsm_debug && (stage & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, %d, cfd)\twrnb %d\n", cur, (fsm->rdbuf == fsm->rdb ? "rdbuf" : "mmap"), (int)fsm->rdnb, (int)fsm->wrnb); if (fsm->rdnb != fsm->wrnb || Ferror(fsm->cfd)) rc = CPIOERR_WRITE_FAILED; if (fsm->wrnb > 0) fsm->cpioPos += fsm->wrnb; break; case FSM_ROPEN: fsm->rfd = Fopen(fsm->path, "r.ufdio"); if (fsm->rfd == NULL || Ferror(fsm->rfd)) { if (fsm->rfd != NULL) (void) fsmNext(fsm, FSM_RCLOSE); fsm->rfd = NULL; rc = CPIOERR_OPEN_FAILED; break; } if (_fsm_debug && (stage & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, \"r\") rfd %p rdbuf %p\n", cur, fsm->path, fsm->rfd, fsm->rdbuf); break; case FSM_READ: fsm->rdnb = Fread(fsm->rdbuf, sizeof(*fsm->rdbuf), fsm->rdlen, fsm->rfd); if (_fsm_debug && (stage & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (rdbuf, %d, rfd)\trdnb %d\n", cur, (int)fsm->rdlen, (int)fsm->rdnb); if (fsm->rdnb != fsm->rdlen || Ferror(fsm->rfd)) rc = CPIOERR_READ_FAILED; break; case FSM_RCLOSE: if (fsm->rfd != NULL) { if (_fsm_debug && (stage & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%p)\n", cur, fsm->rfd); (void) rpmswAdd(rpmtsOp(fsmGetTs(fsm), RPMTS_OP_DIGEST), fdOp(fsm->rfd, FDSTAT_DIGEST)); (void) Fclose(fsm->rfd); errno = saveerrno; } fsm->rfd = NULL; break; case FSM_WOPEN: fsm->wfd = Fopen(fsm->path, "w.ufdio"); if (fsm->wfd == NULL || Ferror(fsm->wfd)) { if (fsm->wfd != NULL) (void) fsmNext(fsm, FSM_WCLOSE); fsm->wfd = NULL; rc = CPIOERR_OPEN_FAILED; } if (_fsm_debug && (stage & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%s, \"w\") wfd %p wrbuf %p\n", cur, fsm->path, fsm->wfd, fsm->wrbuf); break; case FSM_WRITE: fsm->wrnb = Fwrite(fsm->wrbuf, sizeof(*fsm->wrbuf), fsm->rdnb, fsm->wfd); if (_fsm_debug && (stage & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (wrbuf, %d, wfd)\twrnb %d\n", cur, (int)fsm->rdnb, (int)fsm->wrnb); if (fsm->rdnb != fsm->wrnb || Ferror(fsm->wfd)) rc = CPIOERR_WRITE_FAILED; break; case FSM_WCLOSE: if (fsm->wfd != NULL) { if (_fsm_debug && (stage & FSM_SYSCALL)) rpmlog(RPMLOG_DEBUG, " %8s (%p)\n", cur, fsm->wfd); (void) rpmswAdd(rpmtsOp(fsmGetTs(fsm), RPMTS_OP_DIGEST), fdOp(fsm->wfd, FDSTAT_DIGEST)); (void) Fclose(fsm->wfd); errno = saveerrno; } fsm->wfd = NULL; break; default: break; } if (!(stage & FSM_INTERNAL)) { fsm->rc = (rc == CPIOERR_HDR_TRAILER ? 0 : rc); } return rc; } /** * Return formatted string representation of file disposition. * @param a file dispostion * @return formatted string */ static const char * fileActionString(rpmFileAction a) { switch (a) { case FA_UNKNOWN: return "unknown"; case FA_CREATE: return "create"; case FA_COPYOUT: return "copyout"; case FA_COPYIN: return "copyin"; case FA_BACKUP: return "backup"; case FA_SAVE: return "save"; case FA_SKIP: return "skip"; case FA_ALTNAME: return "altname"; case FA_ERASE: return "erase"; case FA_SKIPNSTATE: return "skipnstate"; case FA_SKIPNETSHARED: return "skipnetshared"; case FA_SKIPCOLOR: return "skipcolor"; default: return "???"; } } /** * Return formatted string representation of file stages. * @param a file stage * @return formatted string */ static const char * fileStageString(fileStage a) { switch(a) { case FSM_UNKNOWN: return "unknown"; case FSM_PKGINSTALL:return "INSTALL"; case FSM_PKGERASE: return "ERASE"; case FSM_PKGBUILD: return "BUILD"; case FSM_PKGUNDO: return "UNDO"; case FSM_CREATE: return "create"; case FSM_INIT: return "init"; case FSM_MAP: return "map"; case FSM_MKDIRS: return "mkdirs"; case FSM_RMDIRS: return "rmdirs"; case FSM_PRE: return "pre"; case FSM_PROCESS: return "process"; case FSM_POST: return "post"; case FSM_MKLINKS: return "mklinks"; case FSM_NOTIFY: return "notify"; case FSM_UNDO: return "undo"; case FSM_FINI: return "fini"; case FSM_COMMIT: return "commit"; case FSM_DESTROY: return "destroy"; case FSM_VERIFY: return "verify"; case FSM_UNLINK: return "unlink"; case FSM_RENAME: return "rename"; case FSM_MKDIR: return "mkdir"; case FSM_RMDIR: return "rmdir"; case FSM_LSETFCON: return "lsetfcon"; case FSM_CHOWN: return "chown"; case FSM_LCHOWN: return "lchown"; case FSM_CHMOD: return "chmod"; case FSM_UTIME: return "utime"; case FSM_SYMLINK: return "symlink"; case FSM_LINK: return "link"; case FSM_MKFIFO: return "mkfifo"; case FSM_MKNOD: return "mknod"; case FSM_LSTAT: return "lstat"; case FSM_STAT: return "stat"; case FSM_READLINK: return "readlink"; case FSM_SETCAP: return "setcap"; case FSM_NEXT: return "next"; case FSM_EAT: return "eat"; case FSM_POS: return "pos"; case FSM_PAD: return "pad"; case FSM_TRAILER: return "trailer"; case FSM_HREAD: return "hread"; case FSM_HWRITE: return "hwrite"; case FSM_DREAD: return "Fread"; case FSM_DWRITE: return "Fwrite"; case FSM_ROPEN: return "Fopen"; case FSM_READ: return "Fread"; case FSM_RCLOSE: return "Fclose"; case FSM_WOPEN: return "Fopen"; case FSM_WRITE: return "Fwrite"; case FSM_WCLOSE: return "Fclose"; default: return "???"; } }