/** \ingroup payload * \file lib/fsm.c * File state machine to handle a payload from a package. */ #include "system.h" #include #include #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 "lib/cpio.h" #include "debug.h" #define _FSM_DEBUG 0 int _fsm_debug = _FSM_DEBUG; extern int _fsm_debug; /** \ingroup payload */ enum cpioMapFlags_e { CPIO_MAP_PATH = (1 << 0), CPIO_MAP_MODE = (1 << 1), CPIO_MAP_UID = (1 << 2), CPIO_MAP_GID = (1 << 3), CPIO_FOLLOW_SYMLINKS= (1 << 4), /*!< only for building. */ CPIO_MAP_ABSOLUTE = (1 << 5), CPIO_MAP_ADDDOT = (1 << 6), CPIO_MAP_TYPE = (1 << 8), /*!< only for building. */ CPIO_SBIT_CHECK = (1 << 9) }; typedef rpmFlags cpioMapFlags; typedef struct fsmIterator_s * FSMI_t; typedef struct fsm_s * FSM_t; typedef struct hardLink_s * hardLink_t; typedef enum fileStage_e { FSM_PKGINSTALL, FSM_PKGERASE, FSM_PKGBUILD, } fileStage; /* 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 { rpmfs fs; /*!< file state info. */ rpmfi fi; /*!< transaction element file info. */ int reverse; /*!< reversed traversal? */ int isave; /*!< last returned iterator index. */ int i; /*!< iterator index. */ }; /** \ingroup payload * File name and stat information. */ struct fsm_s { char * path; /*!< Current file name. */ char * buf; /*!< read: Buffer. */ size_t bufsize; /*!< read: Buffer allocated size. */ FSMI_t iter; /*!< File iterator. */ int ix; /*!< Current file iterator index. */ hardLink_t links; /*!< Pending hard linked file(s). */ hardLink_t li; /*!< Current hard linked file(s). */ char ** failedFile; /*!< First file name that failed. */ const char * osuffix; /*!< Old, preserved, file suffix. */ const char * nsuffix; /*!< New, created, file suffix. */ char * suffix; /*!< Current file suffix. */ int postpone; /*!< Skip remaining stages? */ int diskchecked; /*!< Has stat(2) been performed? */ int exists; /*!< Does current file exist on disk? */ cpioMapFlags mapFlags; /*!< Bit(s) to control mapping. */ const char * dirName; /*!< File directory name. */ const char * baseName; /*!< File base name. */ struct selabel_handle *sehandle; /*!< SELinux label handle (if any). */ unsigned fflags; /*!< File flags. */ rpmFileAction action; /*!< File disposition. */ fileStage goal; /*!< Package state machine goal. */ struct stat sb; /*!< Current file stat(2) info. */ struct stat osb; /*!< Original file stat(2) info. */ }; /** * 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 rpmfs fsmGetFs(const FSM_t fsm) { const FSMI_t iter = fsm->iter; return (iter ? iter->fs : 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 * fileActionString(rpmFileAction a); /** \ingroup payload * Build path to file from file info, optionally ornamented with suffix. * @param fsm file state machine data * @param isDir directory or regular path? * @param suffix suffix to use (NULL disables) * @retval path to file (malloced) */ static char * fsmFsPath(const FSM_t fsm, int isDir, const char * suffix) { return rstrscat(NULL, fsm->dirName, fsm->baseName, (!isDir && suffix) ? suffix : "", NULL); } /** \ingroup payload * Destroy file info iterator. * @param p file info iterator * @retval NULL always */ static FSMI_t mapFreeIterator(FSMI_t iter) { if (iter) { iter->fs = NULL; /* rpmfs is not refcounted */ iter->fi = rpmfiFree(iter->fi); free(iter); } return NULL; } /** \ingroup payload * Create file info iterator. * @param fi transaction element file info * @return file info iterator */ static FSMI_t mapInitIterator(rpmfs fs, rpmfi fi, int reverse) { FSMI_t iter = NULL; iter = xcalloc(1, sizeof(*iter)); iter->fs = fs; /* rpmfs is not refcounted */ iter->fi = rpmfiLink(fi); iter->reverse = reverse; 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 * Create directory name iterator. * @param fi file info set * @param fs file state set * @param reverse traverse directory names in reverse order? * @return directory name iterator */ static DNLI_t dnlInitIterator(rpmfi fi, rpmfs fs, int reverse) { 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; } /** * 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)) { rpmfs fs = fsmGetFs(fsm); /* 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); /* Never create backup for %ghost files. */ if (fsm->goal != FSM_PKGBUILD && !(fsm->fflags & RPMFILE_GHOST)) { switch (fsm->action) { case FA_ALTNAME: fsm->nsuffix = SUFFIX_RPMNEW; break; case FA_SAVE: fsm->osuffix = SUFFIX_RPMSAVE; break; case FA_BACKUP: fsm->osuffix = (fsm->goal == FSM_PKGINSTALL) ? SUFFIX_RPMORIG : SUFFIX_RPMSAVE; break; default: break; } } if ((fsm->mapFlags & CPIO_MAP_PATH) || fsm->nsuffix) { fsm->path = _free(fsm->path); fsm->path = fsmFsPath(fsm, S_ISDIR(fsm->sb.st_mode), (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; hardLink_t *tailp; /* Find hard link set. */ for (tailp = &fsm->links; (fsm->li = *tailp) != NULL; tailp = &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; *tailp = fsm->li; /* append to tail of linked list */ } 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 = fsmGetFs(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; } /* Check for hard links missing from payload, also freeing the data (eh?) */ static int checkHardLinks(FSM_t fsm) { int rc = 0; while ((fsm->li = fsm->links) != NULL) { fsm->links = fsm->li->next; fsm->li->next = NULL; if (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; } } fsm->li = freeHardLink(fsm->li); } return rc; } static FSM_t fsmNew(fileStage goal, rpmfs fs, rpmfi fi, char ** failedFile) { FSM_t fsm = xcalloc(1, sizeof(*fsm)); fsm->ix = -1; fsm->goal = goal; fsm->iter = mapInitIterator(fs, fi, (goal == FSM_PKGERASE)); /* common flags for all modes */ fsm->mapFlags = CPIO_MAP_PATH | CPIO_MAP_MODE | CPIO_MAP_UID | CPIO_MAP_GID; if (fsm->goal == FSM_PKGINSTALL || fsm->goal == FSM_PKGBUILD) { fsm->bufsize = 8 * BUFSIZ; fsm->buf = xmalloc(fsm->bufsize); } fsm->failedFile = failedFile; if (fsm->failedFile) *fsm->failedFile = NULL; return fsm; } static FSM_t fsmFree(FSM_t fsm) { fsm->buf = _free(fsm->buf); fsm->bufsize = 0; fsm->iter = mapFreeIterator(fsm->iter); fsm->failedFile = NULL; fsm->path = _free(fsm->path); fsm->suffix = _free(fsm->suffix); while ((fsm->li = fsm->links) != NULL) { fsm->links = fsm->li->next; fsm->li->next = NULL; fsm->li = freeHardLink(fsm->li); } free(fsm); return NULL; } /* Find and set file security context */ static int fsmSetSELabel(struct selabel_handle *sehandle, const char *path, mode_t mode) { int rc = 0; #if WITH_SELINUX if (sehandle) { security_context_t scon = NULL; if (selabel_lookup_raw(sehandle, &scon, path, mode) == 0) { rc = lsetfilecon(path, scon); if (_fsm_debug) { rpmlog(RPMLOG_DEBUG, " %8s (%s, %s) %s\n", __func__, path, scon, (rc < 0 ? strerror(errno) : "")); } if (rc < 0 && errno == EOPNOTSUPP) rc = 0; } freecon(scon); } #endif return rc ? CPIOERR_LSETFCON_FAILED : 0; } static int fsmSetFCaps(const char *path, const char *captxt) { int rc = 0; #if WITH_CAP if (captxt && *captxt != '\0') { cap_t fcaps = cap_from_text(captxt); if (fcaps == NULL || cap_set_file(path, fcaps) != 0) { rc = CPIOERR_SETCAP_FAILED; } cap_free(fcaps); } #endif return rc; } /** * 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)) { ino_t finalInode = rpmfiFInodeIndex(fi, i); 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_ino = finalInode; 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; } return 0; } /** \ingroup payload * Create file from payload stream. * @param fsm file state machine data * @param archive payload archive * @return 0 on success */ static int expandRegular(FSM_t fsm, rpmpsm psm, rpmcpio_t archive, int nodigest) { FD_t wfd = NULL; const struct stat * st = &fsm->sb; rpm_loff_t left = st->st_size; const unsigned char * fidigest = NULL; pgpHashAlgo digestalgo = 0; int rc = 0; wfd = Fopen(fsm->path, "w.ufdio"); if (Ferror(wfd)) { rc = CPIOERR_OPEN_FAILED; goto exit; } if (!nodigest) { rpmfi fi = fsmGetFi(fsm); digestalgo = rpmfiDigestAlgo(fi); fidigest = rpmfiFDigestIndex(fi, fsm->ix, NULL, NULL); } if (st->st_size > 0 && fidigest) fdInitDigest(wfd, digestalgo, 0); while (left) { size_t len; len = (left > fsm->bufsize ? fsm->bufsize : left); if (rpmcpioRead(archive, fsm->buf, len) != len) { rc = CPIOERR_READ_FAILED; goto exit; } if ((Fwrite(fsm->buf, sizeof(*fsm->buf), len, wfd) != len) || Ferror(wfd)) { rc = CPIOERR_WRITE_FAILED; goto exit; } left -= len; /* don't call this with fileSize == fileComplete */ if (!rc && left) rpmpsmNotify(psm, RPMCALLBACK_INST_PROGRESS, rpmcpioTell(archive)); } if (st->st_size > 0 && fidigest) { void * digest = NULL; (void) Fflush(wfd); fdFiniDigest(wfd, digestalgo, &digest, NULL, 0); if (digest != NULL && fidigest != NULL) { size_t diglen = rpmDigestLength(digestalgo); if (memcmp(digest, fidigest, diglen)) { rc = CPIOERR_DIGEST_MISMATCH; } } else { rc = CPIOERR_DIGEST_MISMATCH; } free(digest); } exit: if (wfd) { int myerrno = errno; Fclose(wfd); errno = myerrno; } return rc; } static int fsmReadLink(const char *path, char *buf, size_t bufsize, size_t *linklen) { ssize_t llen = readlink(path, buf, bufsize - 1); int rc = CPIOERR_READLINK_FAILED; if (_fsm_debug) { rpmlog(RPMLOG_DEBUG, " %8s (%s, buf, %d) %s\n", __func__, path, (int)(bufsize -1), (llen < 0 ? strerror(errno) : "")); } if (llen >= 0) { buf[llen] = '\0'; rc = 0; *linklen = llen; } return rc; } /** \ingroup payload * Write next item to payload stream. * @param fsm file state machine data * @param writeData should data be written? * @param archive payload archive * @return 0 on success */ static int writeFile(FSM_t fsm, int writeData, rpmcpio_t archive) { FD_t rfd = NULL; char * path = fsm->path; struct stat * st = &fsm->sb; struct stat * ost = &fsm->osb; char * symbuf = NULL; rpm_loff_t left; int rc = 0; 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. */ size_t linklen; rc = fsmReadLink(fsm->path, fsm->buf, fsm->bufsize, &linklen); if (rc) goto exit; st->st_size = linklen; rstrcat(&symbuf, fsm->buf); /* 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 = rpmcpioHeaderWrite(archive, fsm->path, st); _free(fsm->path); fsm->path = path; if (rc) goto exit; if (writeData && S_ISREG(st->st_mode)) { size_t len; rfd = Fopen(fsm->path, "r.ufdio"); if (Ferror(rfd)) { rc = CPIOERR_OPEN_FAILED; goto exit; } left = st->st_size; while (left) { len = (left > fsm->bufsize ? fsm->bufsize : left); if (Fread(fsm->buf, sizeof(*fsm->buf), len, rfd) != len || Ferror(rfd)) { rc = CPIOERR_READ_FAILED; goto exit; } if (rpmcpioWrite(archive, fsm->buf, len) != len) { rc = CPIOERR_WRITE_FAILED; goto exit; } left -= len; } } else if (writeData && S_ISLNK(st->st_mode)) { size_t len = strlen(symbuf); if (rpmcpioWrite(archive, symbuf, len) != len) { rc = CPIOERR_WRITE_FAILED; goto exit; } } exit: if (rfd) { /* preserve any prior errno across close */ int myerrno = errno; Fclose(rfd); errno = myerrno; } fsm->path = path; free(symbuf); return rc; } /** \ingroup payload * Write set of linked files to payload stream. * @param fsm file state machine data * @param archive payload archive * @return 0 on success */ static int writeLinkedFile(FSM_t fsm, rpmcpio_t archive) { 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), archive); 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 writeLinks(FSM_t fsm, rpmcpio_t archive) { int j, rc = 0; nlink_t i, nlink; 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, archive); fsm->li = freeHardLink(fsm->li); } return rc; } static int fsmStat(const char *path, int dolstat, struct stat *sb) { int rc; if (dolstat){ rc = lstat(path, sb); } else { rc = stat(path, sb); } if (_fsm_debug && rc && errno != ENOENT) rpmlog(RPMLOG_DEBUG, " %8s (%s, ost) %s\n", __func__, path, (rc < 0 ? strerror(errno) : "")); if (rc < 0) { rc = (errno == ENOENT ? CPIOERR_ENOENT : CPIOERR_LSTAT_FAILED); /* WTH is this, and is it really needed, still? */ memset(sb, 0, sizeof(*sb)); /* 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 = NULL; 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; fsm->ix = fsm->li->filex[fsm->li->createdPath]; rc = fsmMapPath(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(opath, fsm->path) */ rc = link(opath, fsm->path); if (_fsm_debug) rpmlog(RPMLOG_DEBUG, " %8s (%s, %s) %s\n", __func__, 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); free(opath); fsm->ix = iterIndex; fsm->nsuffix = nsuffix; fsm->path = path; return ec; } static int fsmCommit(FSM_t fsm); /** \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 = fsmCommit(fsm); fsm->path = _free(fsm->path); fsm->li->filex[i] = -1; } fsm->ix = iterIndex; fsm->nsuffix = nsuffix; fsm->path = path; return rc; } static int fsmRmdir(const char *path) { int rc = rmdir(path); if (_fsm_debug) rpmlog(RPMLOG_DEBUG, " %8s (%s) %s\n", __func__, 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 fsmMkdir(const char *path, mode_t mode) { int rc = mkdir(path, (mode & 07777)); if (_fsm_debug) rpmlog(RPMLOG_DEBUG, " %8s (%s, 0%04o) %s\n", __func__, path, (unsigned)(mode & 07777), (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_MKDIR_FAILED; return rc; } static int fsmMkfifo(const char *path, mode_t mode) { int rc = mkfifo(path, (mode & 07777)); if (_fsm_debug) { rpmlog(RPMLOG_DEBUG, " %8s (%s, 0%04o) %s\n", __func__, path, (unsigned)(mode & 07777), (rc < 0 ? strerror(errno) : "")); } if (rc < 0) rc = CPIOERR_MKFIFO_FAILED; return rc; } static int fsmMknod(const char *path, mode_t mode, dev_t dev) { /* FIX: check S_IFIFO or dev != 0 */ int rc = mknod(path, (mode & ~07777), dev); if (_fsm_debug) { rpmlog(RPMLOG_DEBUG, " %8s (%s, 0%o, 0x%x) %s\n", __func__, path, (unsigned)(mode & ~07777), (unsigned)dev, (rc < 0 ? strerror(errno) : "")); } if (rc < 0) rc = CPIOERR_MKNOD_FAILED; return rc; } /** * Create (if necessary) directories not explicitly included in package. * @param dnli file state machine data * @param sehandle selinux label handle (bah) * @return 0 on success */ static int fsmMkdirs(rpmfi fi, rpmfs fs, struct selabel_handle *sehandle) { DNLI_t dnli = dnlInitIterator(fi, fs, 0); struct stat sb; const char *dpath; int dc = rpmfiDC(fi); int rc = 0; int i; int ldnlen = 0; int ldnalloc = 0; char * ldn = NULL; short * dnlx = NULL; dnlx = (dc ? xcalloc(dc, sizeof(*dnlx)) : NULL); if (dnlx != NULL) while ((dpath = dnlNextIterator(dnli)) != NULL) { size_t dnlen = strlen(dpath); char * te, dn[dnlen+1]; dc = dnli->isave; if (dc < 0) continue; dnlx[dc] = dnlen; if (dnlen <= 1) continue; if (dnlen <= ldnlen && rstreq(dpath, ldn)) continue; /* Copy as we need to modify the string */ (void) stpcpy(dn, dpath); /* 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 < ldnlen && (ldn[i] == '/' || ldn[i] == '\0') && rstreqn(dn, ldn, i)) { *te = '/'; /* Move pre-existing path marker forward. */ dnlx[dc] = (te - dn); continue; } /* Validate next component of path. */ rc = fsmStat(dn, 1, &sb); /* lstat */ *te = '/'; /* Directory already exists? */ if (rc == 0 && S_ISDIR(sb.st_mode)) { /* Move pre-existing path marker forward. */ dnlx[dc] = (te - dn); } else if (rc == CPIOERR_ENOENT) { *te = '\0'; mode_t mode = S_IFDIR | (_dirPerms & 07777); rc = fsmMkdir(dn, mode); if (!rc) { rc = fsmSetSELabel(sehandle, dn, mode); rpmlog(RPMLOG_DEBUG, "%s directory created with perms %04o\n", dn, (unsigned)(mode & 07777)); } *te = '/'; } if (rc) break; } if (rc) break; /* Save last validated path. */ if (ldnalloc < (dnlen + 1)) { ldnalloc = dnlen + 100; ldn = xrealloc(ldn, ldnalloc); } if (ldn != NULL) { /* XXX can't happen */ strcpy(ldn, dn); ldnlen = dnlen; } } free(dnlx); free(ldn); dnlFreeIterator(dnli); 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 void fsmReset(FSM_t fsm) { fsm->path = _free(fsm->path); fsm->postpone = 0; fsm->diskchecked = fsm->exists = 0; fsm->action = FA_UNKNOWN; fsm->osuffix = NULL; fsm->nsuffix = NULL; memset(&(fsm->sb), 0, sizeof(fsm->sb)); memset(&(fsm->osb), 0, sizeof(fsm->sb)); } static int fsmInit(FSM_t fsm) { int rc = 0; /* 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))) { int dolstat = !(fsm->mapFlags & CPIO_FOLLOW_SYMLINKS); rc = fsmStat(fsm->path, dolstat, &fsm->osb); 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); } rpmlog(RPMLOG_DEBUG, "%-10s %06o%3d (%4d,%4d)%6d %s\n", fileActionString(fsm->action), (int)fsm->sb.st_mode, (int)fsm->sb.st_nlink, (int)fsm->sb.st_uid, (int)fsm->sb.st_gid, (int)fsm->sb.st_size, (fsm->path ? fsm->path : "")); return rc; } static int fsmSymlink(const char *opath, const char *path) { int rc = symlink(opath, path); if (_fsm_debug) { rpmlog(RPMLOG_DEBUG, " %8s (%s, %s) %s\n", __func__, opath, path, (rc < 0 ? strerror(errno) : "")); } if (rc < 0) rc = CPIOERR_SYMLINK_FAILED; return rc; } static int fsmUnlink(const char *path, cpioMapFlags mapFlags) { int rc = 0; if (mapFlags & CPIO_SBIT_CHECK) removeSBITS(path); rc = unlink(path); if (_fsm_debug) rpmlog(RPMLOG_DEBUG, " %8s (%s) %s\n", __func__, path, (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = (errno == ENOENT ? CPIOERR_ENOENT : CPIOERR_UNLINK_FAILED); return rc; } static int fsmRename(const char *opath, const char *path, cpioMapFlags mapFlags) { if (mapFlags & CPIO_SBIT_CHECK) removeSBITS(path); int rc = rename(opath, path); #if defined(ETXTBSY) && defined(__HPUX__) /* XXX HP-UX (and other os'es) don't permit rename to busy files. */ if (rc && errno == ETXTBSY) { char *rmpath = NULL; rstrscat(&rmpath, path, "-RPMDELETE", NULL); rc = rename(path, rmpath); if (!rc) rc = rename(opath, path); free(rmpath); } #endif if (_fsm_debug) rpmlog(RPMLOG_DEBUG, " %8s (%s, %s) %s\n", __func__, opath, path, (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_RENAME_FAILED; return rc; } static int fsmChown(const char *path, uid_t uid, gid_t gid) { int rc = chown(path, uid, gid); if (rc < 0) { struct stat st; if (lstat(path, &st) == 0 && st.st_uid == uid && st.st_gid == gid) rc = 0; } if (_fsm_debug) rpmlog(RPMLOG_DEBUG, " %8s (%s, %d, %d) %s\n", __func__, path, (int)uid, (int)gid, (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_CHOWN_FAILED; return rc; } static int fsmLChown(const char *path, uid_t uid, gid_t gid) { int rc = lchown(path, uid, gid); if (rc < 0) { struct stat st; if (lstat(path, &st) == 0 && st.st_uid == uid && st.st_gid == gid) rc = 0; } if (_fsm_debug) rpmlog(RPMLOG_DEBUG, " %8s (%s, %d, %d) %s\n", __func__, path, (int)uid, (int)gid, (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_CHOWN_FAILED; return rc; } static int fsmChmod(const char *path, mode_t mode) { int rc = chmod(path, (mode & 07777)); if (rc < 0) { struct stat st; if (lstat(path, &st) == 0 && (st.st_mode & 07777) == (mode & 07777)) rc = 0; } if (_fsm_debug) rpmlog(RPMLOG_DEBUG, " %8s (%s, 0%04o) %s\n", __func__, path, (unsigned)(mode & 07777), (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_CHMOD_FAILED; return rc; } static int fsmUtime(const char *path, time_t mtime) { int rc = 0; struct utimbuf stamp; stamp.actime = mtime; stamp.modtime = mtime; rc = utime(path, &stamp); if (_fsm_debug) rpmlog(RPMLOG_DEBUG, " %8s (%s, 0x%x) %s\n", __func__, path, (unsigned)mtime, (rc < 0 ? strerror(errno) : "")); if (rc < 0) rc = CPIOERR_UTIME_FAILED; return rc; } 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)) { /* HP-UX (and other os'es) don't permit unlink on busy files. */ char *rmpath = rstrscat(NULL, fsm->path, "-RPMDELETE", NULL); rc = fsmRename(fsm->path, rmpath, fsm->mapFlags); /* XXX shouldn't we take unlink return code here? */ if (!rc) (void) fsmUnlink(rmpath, fsm->mapFlags); else rc = CPIOERR_UNLINK_FAILED; free(rmpath); 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->path, 0, &fsm->osb); 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)) { char buf[8 * BUFSIZ]; size_t len; rc = fsmReadLink(fsm->path, buf, 8 * BUFSIZ, &len); errno = saveerrno; if (rc) return rc; /* FSM_PROCESS puts link target to fsm->buf. */ if (rstreq(fsm->buf, buf)) 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 = fsmUnlink(fsm->path, fsm->mapFlags); 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] == ';')) /* Rename pre-existing modified or unmanaged file. */ static int fsmBackup(FSM_t fsm) { int rc = 0; /* FIXME: %ghost can have backup action but no suffix */ if ((fsm->action == FA_SAVE || fsm->action == FA_BACKUP) && fsm->osuffix) { char * opath = fsmFsPath(fsm, S_ISDIR(fsm->sb.st_mode), NULL); char * path = fsmFsPath(fsm, 0, fsm->osuffix); rc = fsmRename(opath, path, fsm->mapFlags); if (!rc) { rpmlog(RPMLOG_WARNING, _("%s saved as %s\n"), opath, path); fsm->exists = 0; /* it doesn't exist anymore... */ } free(path); free(opath); } return rc; } static int fsmCommit(FSM_t fsm) { int rc = 0; struct stat * st = &fsm->sb; /* XXX Special case /dev/log, which shouldn't be packaged anyways */ if (!S_ISSOCK(st->st_mode) && !IS_DEV_LOG(fsm->path)) { /* Backup on-disk file if needed. Directories are handled earlier */ if (!S_ISDIR(st->st_mode)) rc = fsmBackup(fsm); /* Rename temporary to final file name. */ if (!S_ISDIR(st->st_mode) && (fsm->suffix || fsm->nsuffix)) { char *npath = fsmFsPath(fsm, 0, fsm->nsuffix); rc = fsmRename(fsm->path, npath, fsm->mapFlags); if (!rc && fsm->nsuffix) { char * opath = fsmFsPath(fsm, 0, NULL); rpmlog(RPMLOG_WARNING, _("%s created as %s\n"), opath, npath); free(opath); } free(fsm->path); fsm->path = npath; } /* Set file security context (if enabled) */ if (!rc && !getuid()) { rc = fsmSetSELabel(fsm->sehandle, fsm->path, fsm->sb.st_mode); } if (S_ISLNK(st->st_mode)) { if (!rc && !getuid()) rc = fsmLChown(fsm->path, fsm->sb.st_uid, fsm->sb.st_gid); } else { rpmfi fi = fsmGetFi(fsm); if (!rc && !getuid()) rc = fsmChown(fsm->path, fsm->sb.st_uid, fsm->sb.st_gid); if (!rc) rc = fsmChmod(fsm->path, fsm->sb.st_mode); if (!rc) { rc = fsmUtime(fsm->path, rpmfiFMtimeIndex(fi, fsm->ix)); /* utime error is not critical for directories */ if (rc && S_ISDIR(st->st_mode)) rc = 0; } /* Set file capabilities (if enabled) */ if (!rc && !S_ISDIR(st->st_mode) && !getuid()) { rc = fsmSetFCaps(fsm->path, rpmfiFCapsIndex(fi, fsm->ix)); } } } if (rc && fsm->failedFile && *fsm->failedFile == NULL) { *fsm->failedFile = fsm->path; fsm->path = NULL; } 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 "???"; } } /* Remember any non-regular file state for recording in the rpmdb */ static void setFileState(rpmfs fs, int i, rpmFileAction action) { switch (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; default: break; } } int rpmPackageFilesInstall(rpmts ts, rpmte te, rpmfi fi, FD_t cfd, rpmpsm psm, char ** failedFile) { rpmfs fs = rpmteGetFileStates(te); FSM_t fsm = fsmNew(FSM_PKGINSTALL, fs, fi, failedFile); rpmcpio_t archive = rpmcpioOpen(cfd, O_RDONLY); struct stat * st = &fsm->sb; int saveerrno = errno; int rc = 0; int nodigest = (rpmtsFlags(ts) & RPMTRANS_FLAG_NOFILEDIGEST); if (!rpmteIsSource(te)) fsm->mapFlags |= CPIO_SBIT_CHECK; if (archive == NULL) rc = CPIOERR_INTERNAL; fsm->sehandle = rpmtsSELabelHandle(ts); /* transaction id used for temporary path suffix while installing */ rasprintf(&fsm->suffix, ";%08x", (unsigned)rpmtsGetTid(ts)); /* Detect and create directories not explicitly in package. */ if (!rc) { rc = fsmMkdirs(fi, rpmteGetFileStates(te), fsm->sehandle); } while (!rc) { /* Clean fsm, free'ing memory. */ fsmReset(fsm); /* Read next payload header. */ rc = rpmcpioHeaderRead(archive, &(fsm->path), &(fsm->sb)); /* Detect and exit on end-of-payload. */ if (rc == CPIOERR_HDR_TRAILER) { rc = 0; break; } if (rc) break; /* Identify mapping index. */ fsm->ix = mapFind(fsm->iter, fsm->path); /* Mapping error */ if (fsm->ix < 0) { if (fsm->failedFile && *fsm->failedFile == NULL) *fsm->failedFile = xstrdup(fsm->path); rc = CPIOERR_UNMAPPED_FILE; break; } rc = fsmInit(fsm); /* Exit on error. */ if (rc) { fsm->postpone = 1; break; } setFileState(rpmteGetFileStates(te), fsm->ix, fsm->action); if (!fsm->postpone) { if (S_ISREG(st->st_mode)) { rc = fsmVerify(fsm); if (!(rc == CPIOERR_ENOENT)) return rc; rc = expandRegular(fsm, psm, archive, nodigest); } else if (S_ISDIR(st->st_mode)) { /* Directories replacing something need early backup */ rc = fsmBackup(fsm); rc = fsmVerify(fsm); if (rc == CPIOERR_ENOENT) { mode_t mode = st->st_mode; mode &= ~07777; mode |= 00700; rc = fsmMkdir(fsm->path, mode); } } else if (S_ISLNK(st->st_mode)) { if ((st->st_size + 1) > fsm->bufsize) { rc = CPIOERR_HDR_SIZE; } else if (rpmcpioRead(archive, fsm->buf, st->st_size) != st->st_size) { rc = CPIOERR_READ_FAILED; } else { fsm->buf[st->st_size] = '\0'; /* fsmVerify() assumes link target in fsm->buf */ rc = fsmVerify(fsm); if (rc == CPIOERR_ENOENT) { rc = fsmSymlink(fsm->buf, fsm->path); } } } else if (S_ISFIFO(st->st_mode)) { /* This mimics cpio S_ISSOCK() behavior but probably isnt' right */ rc = fsmVerify(fsm); if (rc == CPIOERR_ENOENT) { rc = fsmMkfifo(fsm->path, 0000); } } else if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode) || S_ISSOCK(st->st_mode)) { rc = fsmVerify(fsm); if (rc == CPIOERR_ENOENT) { rc = fsmMknod(fsm->path, fsm->sb.st_mode, fsm->sb.st_rdev); } } 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); } } if (rc) { if (!fsm->postpone) { /* XXX only erase if temp fn w suffix is in use */ if (fsm->suffix) { if (S_ISDIR(st->st_mode)) { (void) fsmRmdir(fsm->path); } else { (void) fsmUnlink(fsm->path, fsm->mapFlags); } } errno = saveerrno; if (fsm->failedFile && *fsm->failedFile == NULL) *fsm->failedFile = xstrdup(fsm->path); } break; } /* Notify on success. */ rpmpsmNotify(psm, RPMCALLBACK_INST_PROGRESS, rpmcpioTell(archive)); if (!fsm->postpone) { rc = ((S_ISREG(st->st_mode) && st->st_nlink > 1) ? fsmCommitLinks(fsm) : fsmCommit(fsm)); } if (rc) { break; } } if (!rc) rc = checkHardLinks(fsm); /* No need to bother with close errors on read */ rpmcpioFree(archive); fsmFree(fsm); return rc; } int rpmPackageFilesRemove(rpmts ts, rpmte te, rpmfi fi, rpmpsm psm, char ** failedFile) { rpmfs fs = rpmteGetFileStates(te); FSM_t fsm = fsmNew(FSM_PKGERASE, fs, fi, failedFile); int rc = 0; if (!rpmteIsSource(te)) fsm->mapFlags |= CPIO_SBIT_CHECK; while (!rc) { /* Clean fsm, free'ing memory. */ fsmReset(fsm); /* Identify mapping index. */ fsm->ix = mapNextIterator(fsm->iter); /* Exit on end-of-payload. */ if (fsm->ix < 0) break; rc = fsmInit(fsm); if (!fsm->postpone) rc = fsmBackup(fsm); /* Remove erased files. */ if (!fsm->postpone && fsm->action == FA_ERASE) { int missingok = (fsm->fflags & (RPMFILE_MISSINGOK | RPMFILE_GHOST)); if (S_ISDIR(fsm->sb.st_mode)) { rc = fsmRmdir(fsm->path); } else { rc = fsmUnlink(fsm->path, fsm->mapFlags); } /* * Missing %ghost or %missingok entries are not errors. * XXX: Are non-existent files ever an actual error here? Afterall * that's exactly what we're trying to accomplish here, * and complaining about job already done seems like kinderkarten * level "But it was MY turn!" whining... */ if (rc == CPIOERR_ENOENT && missingok) { rc = 0; } /* * Dont whine on non-empty directories for now. We might be able * to track at least some of the expected failures though, * such as when we knowingly left config file backups etc behind. */ if (rc == CPIOERR_ENOTEMPTY) { rc = 0; } if (rc) { int lvl = strict_erasures ? RPMLOG_ERR : RPMLOG_WARNING; rpmlog(lvl, _("%s %s: remove failed: %s\n"), S_ISDIR(fsm->sb.st_mode) ? _("directory") : _("file"), fsm->path, strerror(errno)); } } /* XXX Failure to remove is not (yet) cause for failure. */ if (!strict_erasures) rc = 0; if (rc) break; /* Notify on success. */ /* On erase we're iterating backwards, fixup for progress */ rpm_loff_t amount = (fsm->ix >= 0) ? rpmfiFC(fsmGetFi(fsm)) - fsm->ix : 0; rpmpsmNotify(psm, RPMCALLBACK_UNINST_PROGRESS, amount); } fsmFree(fsm); return rc; } int rpmPackageFilesArchive(rpmfi fi, int isSrc, FD_t cfd, rpm_loff_t * archiveSize, char ** failedFile) { rpmfs fs = rpmfsNew(rpmfiFC(fi), 0);; FSM_t fsm = fsmNew(FSM_PKGBUILD, fs, fi, failedFile);; rpmcpio_t archive = rpmcpioOpen(cfd, O_WRONLY); int rc = 0; fsm->mapFlags |= CPIO_MAP_TYPE; if (isSrc) fsm->mapFlags |= CPIO_FOLLOW_SYMLINKS; if (archive == NULL) { rc = CPIOERR_INTERNAL; } else { int ghost, i, fc = rpmfiFC(fi); /* XXX Is this actually still needed? */ for (i = 0; i < fc; i++) { ghost = (rpmfiFFlagsIndex(fi, i) & RPMFILE_GHOST); rpmfsSetAction(fs, i, ghost ? FA_SKIP : FA_COPYOUT); } } while (!rc) { fsmReset(fsm); /* Identify mapping index. */ fsm->ix = mapNextIterator(fsm->iter); /* Exit on end-of-payload. */ if (fsm->ix < 0) break; rc = fsmInit(fsm); /* Exit on error. */ if (rc) { fsm->postpone = 1; break; } if (fsm->postpone || fsm->fflags & RPMFILE_GHOST) /* XXX Don't if %ghost file. */ continue; /* Hardlinks are handled later */ if (!(S_ISREG(fsm->sb.st_mode) && fsm->sb.st_nlink > 1)) { /* Copy file into archive. */ rc = writeFile(fsm, 1, archive); } if (rc) { if (!fsm->postpone) { if (fsm->failedFile && *fsm->failedFile == NULL) *fsm->failedFile = xstrdup(fsm->path); } break; } } /* Flush partial sets of hard linked files. */ if (!rc) rc = writeLinks(fsm, archive); /* Finish the payload stream */ if (!rc) rc = rpmcpioClose(archive); if (archiveSize) *archiveSize = (rc == 0) ? rpmcpioTell(archive) : 0; rpmcpioFree(archive); rpmfsFree(fs); fsmFree(fsm); return rc; }