lib/psm.c

Go to the documentation of this file.

#include "system.h"

#include <rpmio_internal.h>
#include <rpmlib.h>
#include <rpmmacro.h>
#include <rpmurl.h>
#include <rpmlua.h>

#include "cpio.h"
#include "fsm.h"                /* XXX CPIO_FOO/FSM_FOO constants */
#include "psm.h"

#define _RPMEVR_INTERNAL
#include "rpmds.h"

#define _RPMFI_INTERNAL
#include "rpmfi.h"

#define _RPMTE_INTERNAL
#include "rpmte.h"

#define _RPMTS_INTERNAL         /* XXX ts->notify */
#include "rpmts.h"

#include "rpmlead.h"            /* writeLead proto */
#include "signature.h"          /* signature constants */
#include "legacy.h"             /* XXX rpmfiBuildFNames() */
#include "misc.h"               /* XXX stripTrailingChar() */
#include "rpmdb.h"              /* XXX for db_chrootDone */
#include "debug.h"

#define _PSM_DEBUG      0
/*@unchecked@*/
int _psm_debug = _PSM_DEBUG;
/*@unchecked@*/
int _psm_threads = 0;

/*@access FD_t @*/              /* XXX void ptr args */
/*@access rpmpsm @*/

/*@access rpmfi @*/
/*@access rpmte @*/     /* XXX rpmInstallSourcePackage */
/*@access rpmts @*/     /* XXX ts->notify */

/*@access rpmluav @*/

int rpmVersionCompare(Header first, Header second)
{
    const char * one, * two;
    int_32 * epochOne, * epochTwo;
    static int_32 zero = 0;
    int rc;

    if (!headerGetEntry(first, RPMTAG_EPOCH, NULL, (void **) &epochOne, NULL))
        epochOne = &zero;
    if (!headerGetEntry(second, RPMTAG_EPOCH, NULL, (void **) &epochTwo, NULL))
        epochTwo = &zero;

/*@-boundsread@*/
    if (*epochOne < *epochTwo)
        return -1;
    else if (*epochOne > *epochTwo)
        return 1;
/*@=boundsread@*/

    rc = headerGetEntry(first, RPMTAG_VERSION, NULL, (void **) &one, NULL);
    rc = headerGetEntry(second, RPMTAG_VERSION, NULL, (void **) &two, NULL);

    rc = rpmvercmp(one, two);
    if (rc)
        return rc;

    rc = headerGetEntry(first, RPMTAG_RELEASE, NULL, (void **) &one, NULL);
    rc = headerGetEntry(second, RPMTAG_RELEASE, NULL, (void **) &two, NULL);

    return rpmvercmp(one, two);
}

/*@-bounds@*/
static rpmRC markReplacedFiles(const rpmpsm psm)
        /*@globals rpmGlobalMacroContext, h_errno, fileSystem, internalState @*/
        /*@modifies psm, rpmGlobalMacroContext, fileSystem, internalState @*/
{
    const rpmts ts = psm->ts;
    rpmfi fi = psm->fi;
    HGE_t hge = (HGE_t)fi->hge;
    sharedFileInfo replaced = fi->replaced;
    sharedFileInfo sfi;
    rpmdbMatchIterator mi;
    Header h;
    unsigned int * offsets;
    unsigned int prev;
    int num, xx;

    if (!(rpmfiFC(fi) > 0 && fi->replaced))
        return RPMRC_OK;

    num = prev = 0;
    for (sfi = replaced; sfi->otherPkg; sfi++) {
        if (prev && prev == sfi->otherPkg)
            continue;
        prev = sfi->otherPkg;
        num++;
    }
    if (num == 0)
        return RPMRC_OK;

    offsets = alloca(num * sizeof(*offsets));
    offsets[0] = 0;
    num = prev = 0;
    for (sfi = replaced; sfi->otherPkg; sfi++) {
        if (prev && prev == sfi->otherPkg)
            continue;
        prev = sfi->otherPkg;
        offsets[num++] = sfi->otherPkg;
    }

    mi = rpmtsInitIterator(ts, RPMDBI_PACKAGES, NULL, 0);
    xx = rpmdbAppendIterator(mi, offsets, num);
    xx = rpmdbSetIteratorRewrite(mi, 1);

    sfi = replaced;
    while ((h = rpmdbNextIterator(mi)) != NULL) {
        char * secStates;
        int modified;
        int count;

        modified = 0;

        if (!hge(h, RPMTAG_FILESTATES, NULL, (void **)&secStates, &count))
            continue;
        
        prev = rpmdbGetIteratorOffset(mi);
        num = 0;
        while (sfi->otherPkg && sfi->otherPkg == prev) {
            assert(sfi->otherFileNum < count);
            if (secStates[sfi->otherFileNum] != RPMFILE_STATE_REPLACED) {
                secStates[sfi->otherFileNum] = RPMFILE_STATE_REPLACED;
                if (modified == 0) {
                    /* Modified header will be rewritten. */
                    modified = 1;
                    xx = rpmdbSetIteratorModified(mi, modified);
                }
                num++;
            }
            sfi++;
        }
    }
    mi = rpmdbFreeIterator(mi);

    return RPMRC_OK;
}
/*@=bounds@*/

rpmRC rpmInstallSourcePackage(rpmts ts, FD_t fd,
                const char ** specFilePtr, const char ** cookie)
{
    int scareMem = 1;   /* XXX fi->h is needed */
    rpmfi fi = NULL;
    const char * _sourcedir = NULL;
    const char * _specdir = NULL;
    const char * specFile = NULL;
    HGE_t hge;
    HFD_t hfd;
    Header h = NULL;
    struct rpmpsm_s psmbuf;
    rpmpsm psm = &psmbuf;
    int isSource;
    rpmRC rpmrc;
    int i;

    memset(psm, 0, sizeof(*psm));
    psm->ts = rpmtsLink(ts, "InstallSourcePackage");

    rpmrc = rpmReadPackageFile(ts, fd, "InstallSourcePackage", &h);
    switch (rpmrc) {
    case RPMRC_NOTTRUSTED:
    case RPMRC_NOKEY:
    case RPMRC_OK:
        break;
    default:
        goto exit;
        /*@notreached@*/ break;
    }
    if (h == NULL)
        goto exit;

    rpmrc = RPMRC_OK;

    isSource = (headerIsEntry(h, RPMTAG_SOURCERPM) == 0);

    if (!isSource) {
        rpmError(RPMERR_NOTSRPM, _("source package expected, binary found\n"));
        rpmrc = RPMRC_FAIL;
        goto exit;
    }

    (void) rpmtsAddInstallElement(ts, h, NULL, 0, NULL);

    fi = rpmfiNew(ts, h, RPMTAG_BASENAMES, scareMem);
    h = headerFree(h);

    if (fi == NULL) {   /* XXX can't happen */
        rpmrc = RPMRC_FAIL;
        goto exit;
    }

/*@-onlytrans@*/        /* FIX: te reference */
    fi->te = rpmtsElement(ts, 0);
/*@=onlytrans@*/
    if (fi->te == NULL) {       /* XXX can't happen */
        rpmrc = RPMRC_FAIL;
        goto exit;
    }

assert(fi->h != NULL);
    fi->te->h = headerLink(fi->h);
    fi->te->fd = fdLink(fd, "installSourcePackage");
    hge = fi->hge;
    hfd = fi->hfd;

/*@i@*/ (void) headerMacrosLoad(fi->h);

    psm->fi = rpmfiLink(fi, NULL);
    /*@-assignexpose -usereleased @*/
    psm->te = fi->te;
    /*@=assignexpose =usereleased @*/

    if (cookie) {
        *cookie = NULL;
        if (hge(fi->h, RPMTAG_COOKIE, NULL, (void **) cookie, NULL))
            *cookie = xstrdup(*cookie);
    }

    /* XXX FIXME: don't do per-file mapping, force global flags. */
    fi->fmapflags = _free(fi->fmapflags);
    fi->mapflags = CPIO_MAP_PATH | CPIO_MAP_MODE | CPIO_MAP_UID | CPIO_MAP_GID;

    fi->uid = getuid();
    fi->gid = getgid();
    fi->astriplen = 0;
    fi->striplen = 0;

    for (i = 0; i < fi->fc; i++)
        fi->actions[i] = FA_CREATE;

    i = fi->fc;

    if (fi->h != NULL) {        /* XXX can't happen */
        rpmfiBuildFNames(fi->h, RPMTAG_BASENAMES, &fi->apath, NULL);

        if (headerIsEntry(fi->h, RPMTAG_COOKIE))
            for (i = 0; i < fi->fc; i++)
                if (fi->fflags[i] & RPMFILE_SPECFILE) break;
    }

    if (i == fi->fc) {
        /* Find the spec file by name. */
        for (i = 0; i < fi->fc; i++) {
            const char * t = fi->apath[i];
            t += strlen(fi->apath[i]) - 5;
            if (!strcmp(t, ".spec")) break;
        }
    }

    _sourcedir = rpmGenPath(rpmtsRootDir(ts), "%{_sourcedir}", "");
    rpmrc = rpmMkdirPath(_sourcedir, "sourcedir");
    if (rpmrc) {
        rpmrc = RPMRC_FAIL;
        goto exit;
    }
    if (Access(_sourcedir, W_OK)) {
        rpmError(RPMERR_CREATE, _("cannot write to %%%s %s\n"),
                "_sourcedir", _sourcedir);
        rpmrc = RPMRC_FAIL;
        goto exit;
    }

    _specdir = rpmGenPath(rpmtsRootDir(ts), "%{_specdir}", "");
    rpmrc = rpmMkdirPath(_specdir, "specdir");
    if (rpmrc) {
        rpmrc = RPMRC_FAIL;
        goto exit;
    }
    if (Access(_specdir, W_OK)) {
        rpmError(RPMERR_CREATE, _("cannot write to %%%s %s\n"),
                "_specdir", _specdir);
        rpmrc = RPMRC_FAIL;
        goto exit;
    }

    /* Build dnl/dil with {_sourcedir, _specdir} as values. */
    if (i < fi->fc) {
        int speclen = strlen(_specdir) + 2;
        int sourcelen = strlen(_sourcedir) + 2;
        char * t;

/*@i@*/ fi->dnl = hfd(fi->dnl, -1);

        fi->dc = 2;
        fi->dnl = xmalloc(fi->dc * sizeof(*fi->dnl)
                        + fi->fc * sizeof(*fi->dil)
                        + speclen + sourcelen);
        /*@-dependenttrans@*/
        fi->dil = (int *)(fi->dnl + fi->dc);
        /*@=dependenttrans@*/
        memset(fi->dil, 0, fi->fc * sizeof(*fi->dil));
        fi->dil[i] = 1;
        /*@-dependenttrans@*/
        fi->dnl[0] = t = (char *)(fi->dil + fi->fc);
        fi->dnl[1] = t = stpcpy( stpcpy(t, _sourcedir), "/") + 1;
        /*@=dependenttrans@*/
        (void) stpcpy( stpcpy(t, _specdir), "/");

        t = xmalloc(speclen + strlen(fi->bnl[i]) + 1);
        (void) stpcpy( stpcpy( stpcpy(t, _specdir), "/"), fi->bnl[i]);
        specFile = t;
    } else {
        rpmError(RPMERR_NOSPEC, _("source package contains no .spec file\n"));
        rpmrc = RPMRC_FAIL;
        goto exit;
    }

    psm->goal = PSM_PKGINSTALL;

    /*@-compmempass@*/  /* FIX: psm->fi->dnl should be owned. */
    rpmrc = rpmpsmStage(psm, PSM_PROCESS);

    (void) rpmpsmStage(psm, PSM_FINI);
    /*@=compmempass@*/

    if (rpmrc) rpmrc = RPMRC_FAIL;

exit:
    if (specFilePtr && specFile && rpmrc == RPMRC_OK)
        *specFilePtr = specFile;
    else
        specFile = _free(specFile);

    _specdir = _free(_specdir);
    _sourcedir = _free(_sourcedir);

    psm->fi = rpmfiFree(psm->fi);
    psm->te = NULL;

    if (h != NULL) h = headerFree(h);

    /*@-branchstate@*/
    if (fi != NULL) {
        fi->te->h = headerFree(fi->te->h);
        if (fi->te->fd != NULL)
            (void) Fclose(fi->te->fd);
        fi->te->fd = NULL;
        fi->te = NULL;
        fi = rpmfiFree(fi);
    }
    /*@=branchstate@*/

    /* XXX nuke the added package(s). */
    rpmtsClean(ts);

    psm->ts = rpmtsFree(psm->ts);

    return rpmrc;
}

/*@observer@*/ /*@unchecked@*/
static char * SCRIPT_PATH = "PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin";

static /*@observer@*/ const char * tag2sln(int tag)
        /*@*/
{
    switch (tag) {
    case RPMTAG_PRETRANS:       return "%pretrans";
    case RPMTAG_TRIGGERPREIN:   return "%triggerprein";
    case RPMTAG_PREIN:          return "%pre";
    case RPMTAG_POSTIN:         return "%post";
    case RPMTAG_TRIGGERIN:      return "%triggerin";
    case RPMTAG_TRIGGERUN:      return "%triggerun";
    case RPMTAG_PREUN:          return "%preun";
    case RPMTAG_POSTUN:         return "%postun";
    case RPMTAG_POSTTRANS:      return "%posttrans";
    case RPMTAG_TRIGGERPOSTUN:  return "%triggerpostun";
    case RPMTAG_VERIFYSCRIPT:   return "%verify";
    }
    return "%unknownscript";
}

static rpmScriptID tag2slx(int tag)
        /*@*/
{
    switch (tag) {
    case RPMTAG_PRETRANS:       return RPMSCRIPT_PRETRANS;
    case RPMTAG_TRIGGERPREIN:   return RPMSCRIPT_TRIGGERPREIN;
    case RPMTAG_PREIN:          return RPMSCRIPT_PREIN;
    case RPMTAG_POSTIN:         return RPMSCRIPT_POSTIN;
    case RPMTAG_TRIGGERIN:      return RPMSCRIPT_TRIGGERIN;
    case RPMTAG_TRIGGERUN:      return RPMSCRIPT_TRIGGERUN;
    case RPMTAG_PREUN:          return RPMSCRIPT_PREUN;
    case RPMTAG_POSTUN:         return RPMSCRIPT_POSTUN;
    case RPMTAG_POSTTRANS:      return RPMSCRIPT_POSTTRANS;
    case RPMTAG_TRIGGERPOSTUN:  return RPMSCRIPT_TRIGGERPOSTUN;
    case RPMTAG_VERIFYSCRIPT:   return RPMSCRIPT_VERIFY;
    }
    return RPMSCRIPT_UNKNOWN;
}

static pid_t psmWait(rpmpsm psm)
        /*@globals fileSystem, internalState @*/
        /*@modifies psm, fileSystem, internalState @*/
{
    const rpmts ts = psm->ts;
    rpmtime_t msecs;

    (void) rpmsqWait(&psm->sq);
    msecs = psm->sq.op.usecs/1000;
    (void) rpmswAdd(rpmtsOp(ts, RPMTS_OP_SCRIPTLETS), &psm->sq.op);

    rpmMessage(RPMMESS_DEBUG,
        _("%s: waitpid(%d) rc %d status %x secs %u.%03u\n"),
        psm->stepName, (unsigned)psm->sq.child,
        (unsigned)psm->sq.reaped, psm->sq.status,
        (unsigned)msecs/1000, (unsigned)msecs%1000);

    if (psm->sstates != NULL)
    {   int * ssp = psm->sstates + tag2slx(psm->scriptTag);
        *ssp &= ~0xffff;
        *ssp |= (psm->sq.status & 0xffff);
        *ssp |= RPMSCRIPT_STATE_REAPED;
    }

    return psm->sq.reaped;
}

#ifdef WITH_LUA

static rpmRC runLuaScript(rpmpsm psm, Header h, const char *sln,
                   int progArgc, const char **progArgv,
                   const char *script, int arg1, int arg2)
        /*@globals h_errno, fileSystem, internalState @*/
        /*@modifies psm, fileSystem, internalState @*/
{
    const rpmts ts = psm->ts;
    int rootFdno = -1;
    const char *n, *v, *r;
    rpmRC rc = RPMRC_OK;
    int i;
    int xx;
    rpmlua lua = NULL; /* Global state. */
    rpmluav var;
    int * ssp = NULL;

    if (psm->sstates != NULL)
        ssp = psm->sstates + tag2slx(psm->scriptTag);
    if (ssp != NULL)
        *ssp |= (RPMSCRIPT_STATE_LUA|RPMSCRIPT_STATE_EXEC);

    xx = headerNVR(h, &n, &v, &r);

    /* Save the current working directory. */
/*@-nullpass@*/
    rootFdno = open(".", O_RDONLY, 0);
/*@=nullpass@*/

    /* Get into the chroot. */
    if (!rpmtsChrootDone(ts)) {
        const char *rootDir = rpmtsRootDir(ts);
        /*@-superuser -noeffect @*/
        if (rootDir != NULL && strcmp(rootDir, "/") && *rootDir == '/') {
            xx = Chroot(rootDir);
        /*@=superuser =noeffect @*/
            xx = rpmtsSetChrootDone(ts, 1);
        }
    }

    /* All lua scripts run with CWD == "/". */
    xx = Chdir("/");

    /* Create arg variable */
    rpmluaPushTable(lua, "arg");
    var = rpmluavNew();
    rpmluavSetListMode(var, 1);
/*@+relaxtypes@*/
    if (progArgv) {
        for (i = 0; i < progArgc && progArgv[i]; i++) {
            rpmluavSetValue(var, RPMLUAV_STRING, progArgv[i]);
            rpmluaSetVar(lua, var);
        }
    }
    if (arg1 >= 0) {
        rpmluavSetValueNum(var, arg1);
        rpmluaSetVar(lua, var);
    }
    if (arg2 >= 0) {
        rpmluavSetValueNum(var, arg2);
        rpmluaSetVar(lua, var);
    }
/*@=relaxtypes@*/
/*@-moduncon@*/
    var = rpmluavFree(var);
/*@=moduncon@*/
    rpmluaPop(lua);

    {
        char buf[BUFSIZ];
        xx = snprintf(buf, BUFSIZ, "%s(%s-%s-%s)", sln, n, v, r);
        xx = rpmluaRunScript(lua, script, buf);
        if (xx == -1)
            rc = RPMRC_FAIL;
        if (ssp != NULL) {
            *ssp &= ~0xffff;
            *ssp |= (xx & 0xffff);
            *ssp |= RPMSCRIPT_STATE_REAPED;
        }
    }

    rpmluaDelVar(lua, "arg");

    /* Get out of chroot. */
    if (rpmtsChrootDone(ts)) {
        const char *rootDir = rpmtsRootDir(ts);
        xx = fchdir(rootFdno);
        /*@-superuser -noeffect @*/
        if (rootDir != NULL && strcmp(rootDir, "/") && *rootDir == '/') {
            xx = Chroot(".");
        /*@=superuser =noeffect @*/
            xx = rpmtsSetChrootDone(ts, 0);
        }
    } else
        xx = fchdir(rootFdno);

    xx = close(rootFdno);

    return rc;
}
#endif

/*@unchecked@*/
static int ldconfig_done = 0;

/*@unchecked@*/ /*@observer@*/ /*@null@*/
static const char * ldconfig_path = "/sbin/ldconfig";

static rpmRC runScript(rpmpsm psm, Header h, const char * sln,
                int progArgc, const char ** progArgv,
                const char * script, int arg1, int arg2)
        /*@globals ldconfig_done, rpmGlobalMacroContext, h_errno,
                fileSystem, internalState@*/
        /*@modifies psm, ldconfig_done, rpmGlobalMacroContext,
                fileSystem, internalState @*/
{
    const rpmts ts = psm->ts;
    rpmfi fi = psm->fi;
    HGE_t hge = fi->hge;
    HFD_t hfd = (fi->hfd ? fi->hfd : headerFreeData);
    const char ** argv = NULL;
    int argc = 0;
    const char ** prefixes = NULL;
    int numPrefixes;
    rpmTagType ipt;
    const char * oldPrefix;
    int maxPrefixLength;
    int len;
    char * prefixBuf = NULL;
    const char * fn = NULL;
    int xx;
    int i;
    int freePrefixes = 0;
    FD_t scriptFd;
    FD_t out;
    rpmRC rc = RPMRC_OK;
    const char *n, *v, *r, *a;
    int * ssp = NULL;

    if (psm->sstates != NULL)
        ssp = psm->sstates + tag2slx(psm->scriptTag);
    if (ssp != NULL)
        *ssp = RPMSCRIPT_STATE_UNKNOWN;

    if (progArgv == NULL && script == NULL)
        return rc;

    /* XXX FIXME: except for %verifyscript, rpmteNEVR can be used. */
    xx = headerNVR(h, &n, &v, &r);
    xx = hge(h, RPMTAG_ARCH, NULL, (void **) &a, NULL);

    if (progArgv && strcmp(progArgv[0], "<lua>") == 0) {
#ifdef WITH_LUA
        rpmMessage(RPMMESS_DEBUG,
                _("%s: %s(%s-%s-%s.%s) running <lua> scriptlet.\n"),
                psm->stepName, tag2sln(psm->scriptTag), n, v, r, a);
        return runLuaScript(psm, h, sln, progArgc, progArgv,
                            script, arg1, arg2);
#else
        return RPMRC_FAIL;
#endif
    }

    psm->sq.reaper = 1;

    /* XXX bash must have functional libtermcap.so.2 */
    if (!strcmp(n, "libtermcap"))
        ldconfig_done = 0;

    /*
     * If a successor node, and ldconfig was just run, don't bother.
     */
    if (ldconfig_path && progArgv != NULL && psm->unorderedSuccessor) {
        if (ldconfig_done && !strcmp(progArgv[0], ldconfig_path)) {
            rpmMessage(RPMMESS_DEBUG,
                _("%s: %s(%s-%s-%s.%s) skipping redundant \"%s\".\n"),
                psm->stepName, tag2sln(psm->scriptTag), n, v, r, a,
                progArgv[0]);
            return rc;
        }
    }

    rpmMessage(RPMMESS_DEBUG,
                _("%s: %s(%s-%s-%s.%s) %ssynchronous scriptlet start\n"),
                psm->stepName, tag2sln(psm->scriptTag), n, v, r, a,
                (psm->unorderedSuccessor ? "a" : ""));

    if (!progArgv) {
        argv = alloca(5 * sizeof(*argv));
        argv[0] = "/bin/sh";
        argc = 1;
        ldconfig_done = 0;
    } else {
        argv = alloca((progArgc + 4) * sizeof(*argv));
        memcpy(argv, progArgv, progArgc * sizeof(*argv));
        argc = progArgc;
        ldconfig_done = (ldconfig_path && !strcmp(argv[0], ldconfig_path)
                ? 1 : 0);
    }

#if __ia64__
    /* XXX This assumes that all interpreters are elf executables. */
    if ((a != NULL && a[0] == 'i' && a[1] != '\0' && a[2] == '8' && a[3] == '6')
     && strcmp(argv[0], "/sbin/ldconfig"))
    {
        const char * fmt = rpmGetPath("%{?_autorelocate_path}", NULL);
        const char * errstr;
        char * newPath;
        char * t;

        newPath = headerSprintf(h, fmt, rpmTagTable, rpmHeaderFormats, &errstr);
        fmt = _free(fmt);

        /* XXX On ia64, change leading /emul/ix86 -> /emul/ia32, ick. */
        if (newPath != NULL && *newPath != '\0'
         && strlen(newPath) >= (sizeof("/emul/i386")-1)
         && newPath[0] == '/' && newPath[1] == 'e' && newPath[2] == 'm'
         && newPath[3] == 'u' && newPath[4] == 'l' && newPath[5] == '/'
         && newPath[6] == 'i' && newPath[8] == '8' && newPath[9] == '6')
        {
            newPath[7] = 'a';
            newPath[8] = '3';
            newPath[9] = '2';
        }

        t = alloca(strlen(newPath) + strlen(argv[0]) + 1);
        *t = '\0';
        (void) stpcpy( stpcpy(t, newPath), argv[0]);
        newPath = _free(newPath);
        argv[0] = t;
    }
#endif

    if (hge(h, RPMTAG_INSTPREFIXES, &ipt, (void **) &prefixes, &numPrefixes)) {
        freePrefixes = 1;
    } else if (hge(h, RPMTAG_INSTALLPREFIX, NULL, (void **) &oldPrefix, NULL)) {
        prefixes = &oldPrefix;
        numPrefixes = 1;
    } else {
        numPrefixes = 0;
    }

    maxPrefixLength = 0;
    if (prefixes != NULL)
    for (i = 0; i < numPrefixes; i++) {
        len = strlen(prefixes[i]);
        if (len > maxPrefixLength) maxPrefixLength = len;
    }
    prefixBuf = alloca(maxPrefixLength + 50);

    if (script) {
        const char * rootDir = rpmtsRootDir(ts);
        FD_t fd;

        /*@-branchstate@*/
        if (makeTempFile((!rpmtsChrootDone(ts) ? rootDir : "/"), &fn, &fd)) {
            if (prefixes != NULL && freePrefixes) free(prefixes);
            return RPMRC_FAIL;
        }
        /*@=branchstate@*/

        if (rpmIsDebug() &&
            (!strcmp(argv[0], "/bin/sh") || !strcmp(argv[0], "/bin/bash")))
        {
            static const char set_x[] = "set -x\n";
            xx = Fwrite(set_x, sizeof(set_x[0]), sizeof(set_x)-1, fd);
        }

        if (ldconfig_path && strstr(script, ldconfig_path) != NULL)
            ldconfig_done = 1;

        xx = Fwrite(script, sizeof(script[0]), strlen(script), fd);
        xx = Fclose(fd);

        {   const char * sn = fn;
            if (!rpmtsChrootDone(ts) && rootDir != NULL &&
                !(rootDir[0] == '/' && rootDir[1] == '\0'))
            {
                sn += strlen(rootDir)-1;
            }
            argv[argc++] = sn;
        }

        if (arg1 >= 0) {
            char *av = alloca(20);
            sprintf(av, "%d", arg1);
            argv[argc++] = av;
        }
        if (arg2 >= 0) {
            char *av = alloca(20);
            sprintf(av, "%d", arg2);
            argv[argc++] = av;
        }
    }

    argv[argc] = NULL;

    scriptFd = rpmtsScriptFd(ts);
    if (scriptFd != NULL) {
        if (rpmIsVerbose()) {
            out = fdDup(Fileno(scriptFd));
        } else {
            out = Fopen("/dev/null", "w.fdio");
            if (Ferror(out)) {
                out = fdDup(Fileno(scriptFd));
            }
        }
    } else {
        out = fdDup(STDOUT_FILENO);
    }
    if (out == NULL) return RPMRC_FAIL; /* XXX can't happen */

    /*@-branchstate@*/
    xx = rpmsqFork(&psm->sq);
    if (psm->sq.child == 0) {
        const char * rootDir;
        int pipes[2];
        int flag;
        int fdno;

        pipes[0] = pipes[1] = 0;
        /* make stdin inaccessible */
        xx = pipe(pipes);
        xx = close(pipes[1]);
        xx = dup2(pipes[0], STDIN_FILENO);
        xx = close(pipes[0]);

        /* XXX Force FD_CLOEXEC on 1st 100 inherited fdno's. */
        for (fdno = 3; fdno < 100; fdno++) {
            flag = fcntl(fdno, F_GETFD);
            if (flag == -1 || (flag & FD_CLOEXEC))
                continue;
            xx = fcntl(fdno, F_SETFD, FD_CLOEXEC);
            /* XXX W2DO? debug msg for inheirited fdno w/o FD_CLOEXEC */
        }

        if (scriptFd != NULL) {
            int sfdno = Fileno(scriptFd);
            int ofdno = Fileno(out);
            if (sfdno != STDERR_FILENO)
                xx = dup2(sfdno, STDERR_FILENO);
            if (ofdno != STDOUT_FILENO)
                xx = dup2(ofdno, STDOUT_FILENO);
            /* make sure we don't close stdin/stderr/stdout by mistake! */
            if (ofdno > STDERR_FILENO && ofdno != sfdno)
                xx = Fclose (out);
            if (sfdno > STDERR_FILENO)
                xx = Fclose (scriptFd);
            else {
/*@-usereleased@*/
                xx = Fclose(out);
/*@=usereleased@*/
            }
        }

        {   const char *ipath = rpmExpand("PATH=%{_install_script_path}", NULL);
            const char *path = SCRIPT_PATH;

            if (ipath && ipath[5] != '%')
                path = ipath;

            xx = doputenv(path);
            /*@-modobserver@*/
            ipath = _free(ipath);
            /*@=modobserver@*/
        }

        if (prefixes != NULL)
        for (i = 0; i < numPrefixes; i++) {
            sprintf(prefixBuf, "RPM_INSTALL_PREFIX%d=%s", i, prefixes[i]);
            xx = doputenv(prefixBuf);

            /* backwards compatibility */
            if (i == 0) {
                sprintf(prefixBuf, "RPM_INSTALL_PREFIX=%s", prefixes[i]);
                xx = doputenv(prefixBuf);
            }
        }

        rootDir = ts->rootDir;  /* HACK: rootDir = rpmtsRootDir(ts); instead */
        if (rootDir  != NULL)   /* XXX can't happen */
        switch(urlIsURL(rootDir)) {
        case URL_IS_PATH:
            rootDir += sizeof("file://") - 1;
            rootDir = strchr(rootDir, '/');
            /*@fallthrough@*/
        case URL_IS_UNKNOWN:
            if (!rpmtsChrootDone(ts) &&
                !(rootDir[0] == '/' && rootDir[1] == '\0'))
            {
                /*@-superuser -noeffect @*/
                xx = Chroot(rootDir);
                /*@=superuser =noeffect @*/
            }
            xx = Chdir("/");
            rpmMessage(RPMMESS_DEBUG, _("%s: %s(%s-%s-%s.%s)\texecv(%s) pid %d\n"),
                        psm->stepName, sln, n, v, r, a,
                        argv[0], (unsigned)getpid());

            /* XXX Don't mtrace into children. */
            unsetenv("MALLOC_CHECK_");

            if (ssp != NULL)
                *ssp |= RPMSCRIPT_STATE_EXEC;

            /* Permit libselinux to do the scriptlet exec. */
            if (rpmtsSELinuxEnabled(ts) == 1) { 
                if (ssp != NULL)
                    *ssp |= RPMSCRIPT_STATE_SELINUX;
/*@-moduncon@*/
                xx = rpm_execcon(0, argv[0], argv, environ);
/*@=moduncon@*/
                if (xx != 0)
                    break;
            }

/*@-nullstate@*/
            xx = execv(argv[0], (char *const *)argv);
/*@=nullstate@*/
            break;
        case URL_IS_HTTPS:
        case URL_IS_HTTP:
        case URL_IS_FTP:
        case URL_IS_DASH:
        case URL_IS_HKP:
        default:
            break;
        }

        if (ssp != NULL)
            *ssp &= ~RPMSCRIPT_STATE_EXEC;

        _exit(-1);
        /*@notreached@*/
    }
    /*@=branchstate@*/

    (void) psmWait(psm);

  /* XXX filter order dependent multilib "other" arch helper error. */
  if (!(psm->sq.reaped >= 0 && !strcmp(argv[0], "/usr/sbin/glibc_post_upgrade") && WEXITSTATUS(psm->sq.status) == 110)) {
    if (psm->sq.reaped < 0) {
        rpmError(RPMERR_SCRIPT,
                _("%s(%s-%s-%s.%s) scriptlet failed, waitpid(%d) rc %d: %s\n"),
                 sln, n, v, r, a, psm->sq.child, psm->sq.reaped, strerror(errno));
        rc = RPMRC_FAIL;
    } else
    if (!WIFEXITED(psm->sq.status) || WEXITSTATUS(psm->sq.status)) {
      if (WIFSIGNALED(psm->sq.status)) {
        rpmError(RPMERR_SCRIPT,
                 _("%s(%s-%s-%s.%s) scriptlet failed, signal %d\n"),
                 sln, n, v, r, a, WTERMSIG(psm->sq.status));
      } else {
        rpmError(RPMERR_SCRIPT,
                _("%s(%s-%s-%s.%s) scriptlet failed, exit status %d\n"),
                sln, n, v, r, a, WEXITSTATUS(psm->sq.status));
      }
        rc = RPMRC_FAIL;
    }
  }

    if (freePrefixes) prefixes = hfd(prefixes, ipt);

    xx = Fclose(out);   /* XXX dup'd STDOUT_FILENO */

    /*@-branchstate@*/
    if (script) {
        if (!rpmIsDebug())
            xx = unlink(fn);
        fn = _free(fn);
    }
    /*@=branchstate@*/

    return rc;
}

static rpmRC runInstScript(rpmpsm psm)
        /*@globals rpmGlobalMacroContext, h_errno, fileSystem, internalState @*/
        /*@modifies psm, rpmGlobalMacroContext, fileSystem, internalState @*/
{
    rpmfi fi = psm->fi;
    HGE_t hge = fi->hge;
    HFD_t hfd = (fi->hfd ? fi->hfd : headerFreeData);
    void ** progArgv = NULL;
    int progArgc;
    const char * argv0 = NULL;
    const char ** argv;
    rpmTagType ptt, stt;
    const char * script;
    rpmRC rc = RPMRC_OK;
    int xx;

assert(fi->h != NULL);
    xx = hge(fi->h, psm->scriptTag, &stt, (void **) &script, NULL);
    xx = hge(fi->h, psm->progTag, &ptt, (void **) &progArgv, &progArgc);
    if (progArgv == NULL && script == NULL)
        goto exit;

    /*@-branchstate@*/
    if (progArgv && ptt == RPM_STRING_TYPE) {
        argv = alloca(sizeof(*argv));
        *argv = (const char *) progArgv;
    } else {
        argv = (const char **) progArgv;
    }
    /*@=branchstate@*/

    if (argv[0][0] == '%')
        argv[0] = argv0 = rpmExpand(argv[0], NULL);

    if (fi->h != NULL)  /* XXX can't happen */
    rc = runScript(psm, fi->h, tag2sln(psm->scriptTag), progArgc, argv,
                script, psm->scriptArg, -1);

exit:
    argv0 = _free(argv0);
    progArgv = hfd(progArgv, ptt);
    script = hfd(script, stt);
    return rc;
}

static rpmRC handleOneTrigger(const rpmpsm psm,
                        Header sourceH, Header triggeredH,
                        int arg2, unsigned char * triggersAlreadyRun)
        /*@globals rpmGlobalMacroContext, h_errno, fileSystem, internalState@*/
        /*@modifies psm, sourceH, triggeredH, *triggersAlreadyRun,
                rpmGlobalMacroContext, fileSystem, internalState @*/
{
    int scareMem = 0;
    const rpmts ts = psm->ts;
    rpmfi fi = psm->fi;
    HGE_t hge = fi->hge;
    HFD_t hfd = (fi->hfd ? fi->hfd : headerFreeData);
    rpmds trigger = NULL;
    const char ** triggerScripts;
    const char ** triggerProgs;
    int_32 * triggerIndices;
    const char * sourceName;
    const char * triggerName;