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rpm-build/rpmdb/db1.c

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/*@-type@*/ /* FIX: shrug */
/** \ingroup db1
* \file rpmdb/db1.c
*/
#include "system.h"
#ifdef DYING
/*@unused@*/ static int _debug = 1; /* XXX if < 0 debugging, > 0 unusual error returns */
#endif
#define _mymemset(_a, _b, _c)
#include "rpmio_internal.h"
#include "rpmlib.h"
#include "rpmmacro.h" /* XXX rpmGenPath */
#include "rpmurl.h" /* XXX urlGetPath */
#include "falloc.h"
#include "misc.h"
#include "rpmdb.h"
/* XXX must follow rpmdb.h */
#define DB_VERSION_MAJOR 1
#define DB_VERSION_MINOR 85
#define DB_VERSION_PATCH 0
struct _DBT1 {
void * data; /* data */
size_t size; /* data length */
};
#undef DBT
#define DBT struct _DBT1
#include "debug.h"
/*@access Header@*/ /* XXX compared with NULL */
/*@access rpmdb@*/
/*@access dbiIndex@*/
/*@access dbiIndexSet@*/
/*@-onlytrans@*/
#ifdef DYING
/* XXX remap DB3 types back into DB1 types */
static inline DBTYPE db3_to_dbtype(int dbitype)
{
switch(dbitype) {
case 1: return DB_BTREE;
case 2: return DB_HASH;
case 3: return DB_RECNO;
case 4: return DB_HASH; /* XXX W2DO? */
case 5: return DB_HASH; /* XXX W2DO? */
}
/*@notreached@*/ return DB_HASH;
}
/*@-shadow@*/
static /*@observer@*/ char * db_strerror(int error)
/*@=shadow@*/
{
if (error == 0)
return ("Successful return: 0");
if (error > 0)
return (strerror(error));
switch (error) {
default:
{
/*
* !!!
* Room for a 64-bit number + slop. This buffer is only used
* if we're given an unknown error, which should never happen.
* Note, however, we're no longer thread-safe if it does.
*/
static char ebuf[40];
char * t = ebuf;
*t = '\0';
t = stpcpy(t, "Unknown error: ");
sprintf(t, "%d", error);
return(ebuf);
}
}
/*@notreached@*/
}
static int cvtdberr(dbiIndex dbi, const char * msg, int error, int printit)
/*@*/
{
int rc = 0;
if (error == 0)
rc = 0;
else if (error < 0)
rc = errno;
else if (error > 0)
rc = -1;
if (printit && rc) {
if (msg)
rpmError(RPMERR_DBERR, _("db%d error(%d) from %s: %s\n"),
dbi->dbi_api, rc, msg, db_strerror(error));
else
rpmError(RPMERR_DBERR, _("db%d error(%d): %s\n"),
dbi->dbi_api, rc, db_strerror(error));
}
return rc;
}
#endif /* DYING */
static int db1sync(dbiIndex dbi, /*@unused@*/ unsigned int flags)
/*@globals fileSystem @*/
/*@modifies fileSystem @*/
{
int rc = 0;
if (dbi->dbi_db) {
if (dbi->dbi_rpmtag == RPMDBI_PACKAGES) {
FD_t pkgs = dbi->dbi_db;
int fdno = Fileno(pkgs);
if (fdno >= 0 && (rc = fsync(fdno)) != 0)
rc = errno;
}
#ifdef DYING
else {
DB * db = dbi->dbi_db;
rc = db->sync(db, flags);
rc = cvtdberr(dbi, "db->sync", rc, _debug);
}
#endif
}
return rc;
}
/*@null@*/ static void * doGetRecord(dbiIndex dbi, unsigned int offset)
/*@globals fileSystem @*/
/*@modifies dbi, fileSystem @*/
{
FD_t pkgs = dbi->dbi_db;
void * uh = NULL;
Header h = NULL;
const char ** fileNames;
int fileCount = 0;
int lasto = 0;
int i;
retry:
if (offset >= fadGetFileSize(pkgs))
goto exit;
(void)Fseek(pkgs, offset, SEEK_SET);
h = headerRead(pkgs, HEADER_MAGIC_NO);
/* let's sanity check this record a bit, otherwise just skip it */
if (h != NULL &&
!( headerIsEntry(h, RPMTAG_NAME) &&
headerIsEntry(h, RPMTAG_VERSION) &&
headerIsEntry(h, RPMTAG_RELEASE) &&
headerIsEntry(h, RPMTAG_BUILDTIME)))
{
h = headerFree(h);
}
if (h == NULL) {
/* XXX HACK: try to reconnect broken chain. */
if (lasto == 0) {
rpmMessage(RPMMESS_WARNING,
_("Broken package chain at offset %d(0x%08x), attempting to reconnect ...\n"),
(int) offset, offset);
lasto = (offset ? offset : -1);
offset = fadNextOffset(pkgs, offset);
if (offset > 0)
goto retry;
}
goto exit;
}
if (lasto) {
rpmMessage(RPMMESS_WARNING,
_("Reconnecting broken chain at offset %d(0x%08x).\n"),
(int) offset, offset);
dbi->dbi_lastoffset = offset;
}
/* Retrofit "Provide: name = EVR" for binary packages. */
providePackageNVR(h);
/*
* The RPM used to build much of RH 5.1 could produce packages whose
* file lists did not have leading /'s. Now is a good time to fix that.
*/
/*
* If this tag isn't present, either no files are in the package or
* we're dealing with a package that has just the compressed file name
* list.
*/
if (!headerGetEntryMinMemory(h, RPMTAG_OLDFILENAMES, NULL,
(const void **) &fileNames, &fileCount))
goto exit;
for (i = 0; i < fileCount; i++)
if (*fileNames[i] != '/') break;
if (i == fileCount) {
free(fileNames);
} else { /* bad header -- let's clean it up */
const char ** newFileNames = alloca(sizeof(*newFileNames) * fileCount);
for (i = 0; i < fileCount; i++) {
char * newFileName = alloca(strlen(fileNames[i]) + 2);
if (*fileNames[i] != '/') {
newFileName[0] = '/';
newFileName[1] = '\0';
} else
newFileName[0] = '\0';
strcat(newFileName, fileNames[i]);
newFileNames[i] = newFileName;
}
free(fileNames);
(void) headerModifyEntry(h, RPMTAG_OLDFILENAMES, RPM_STRING_ARRAY_TYPE,
newFileNames, fileCount);
}
/*
* The file list was moved to a more compressed format which not
* only saves memory (nice), but gives fingerprinting a nice, fat
* speed boost (very nice). Go ahead and convert old headers to
* the new style (this is a noop for new headers).
*/
compressFilelist(h);
exit:
/*@-branchstate@*/
if (h != NULL) {
uh = headerUnload(h);
h = headerFree(h);
}
/*@=branchstate@*/
return uh;
}
static int db1copen(/*@unused@*/ dbiIndex dbi,
/*@unused@*/ DBC ** dbcp, unsigned int flags)
/*@modifies *dbcp @*/
{
/* XXX per-iterator cursors need to be set to non-NULL. */
if (flags)
*dbcp = (DBC *)-1;
return 0;
}
static int db1cclose(dbiIndex dbi,
/*@unused@*/ DBC * dbcursor, /*@unused@*/ unsigned int flags)
/*@modifies dbi @*/
{
dbi->dbi_lastoffset = 0;
return 0;
}
/*@-compmempass@*/
static int db1cget(dbiIndex dbi, /*@unused@*/ DBC * dbcursor,
/*@null@*/ void ** keyp,
/*@null@*/ size_t * keylen,
/*@null@*/ void ** datap,
/*@null@*/ size_t * datalen,
/*@unused@*/ unsigned int flags)
/*@globals fileSystem @*/
/*@modifies dbi, *keyp, *keylen, *datap, *datalen, fileSystem @*/
{
DBT key, data;
int rc = 0;
if (dbi == NULL)
return EFAULT;
memset(&key, 0, sizeof(key));
memset(&data, 0, sizeof(data));
/*@-unqualifiedtrans@*/
if (keyp) key.data = *keyp;
if (keylen) key.size = *keylen;
if (datap) data.data = *datap;
if (datalen) data.size = *datalen;
/*@=unqualifiedtrans@*/
if (dbi->dbi_rpmtag == RPMDBI_PACKAGES) {
FD_t pkgs = dbi->dbi_db;
unsigned int offset;
unsigned int newSize;
if (key.data == NULL) { /* XXX simulated DB_NEXT */
if (dbi->dbi_lastoffset == 0) {
dbi->dbi_lastoffset = fadFirstOffset(pkgs);
} else {
dbi->dbi_lastoffset = fadNextOffset(pkgs, dbi->dbi_lastoffset);
}
/*@-immediatetrans@*/
key.data = &dbi->dbi_lastoffset;
/*@=immediatetrans@*/
key.size = sizeof(dbi->dbi_lastoffset);
/* Catch end-of-chain conditions. */
if (dbi->dbi_lastoffset == 0)
goto bail;
}
memcpy(&offset, key.data, sizeof(offset));
/* XXX hack to pass sizeof header to fadAlloc */
newSize = data.size;
if (offset == 0) { /* XXX simulated offset 0 record */
offset = fadAlloc(pkgs, newSize);
if (offset == 0)
return ENOMEM;
offset--; /* XXX hack: caller will increment */
/* XXX hack: return offset as data, free in db1cput */
data.data = xmalloc(sizeof(offset));
memcpy(data.data, &offset, sizeof(offset));
data.size = sizeof(offset);
} else { /* XXX simulated retrieval */
data.data = doGetRecord(dbi, offset);
data.size = 0; /* XXX WRONG */
}
}
#ifdef DYING
else {
DB * db;
int _printit;
if ((db = dbi->dbi_db) == NULL)
return EFAULT;
if (key.data == NULL) {
rc = db->seq(db, &key, &data, (dbi->dbi_lastoffset++ ? R_NEXT : R_FIRST));
_printit = (rc == 1 ? 0 : _debug);
rc = cvtdberr(dbi, "db->seq", rc, _printit);
} else {
rc = db->get(db, &key, &data, 0);
_printit = (rc == 1 ? 0 : _debug);
rc = cvtdberr(dbi, "db1cget", rc, _printit);
}
}
#else
else
rc = EINVAL;
#endif
bail:
if (rc == 0) {
if (keyp) *keyp = key.data;
if (keylen) *keylen = key.size;
if (datap) *datap = data.data;
if (datalen) *datalen = data.size;
}
/*@-nullstate@*/
return rc;
/*@=nullstate@*/
}
/*@=compmempass@*/
static int db1cdel(dbiIndex dbi, /*@unused@*/ DBC * dbcursor, const void * keyp,
size_t keylen, /*@unused@*/ unsigned int flags)
/*@globals fileSystem @*/
/*@modifies dbi, fileSystem @*/
{
DBT key;
int rc = 0;
memset(&key, 0, sizeof(key));
key.data = (void *)keyp;
key.size = keylen;
if (dbi->dbi_rpmtag == RPMDBI_PACKAGES) {
FD_t pkgs = dbi->dbi_db;
unsigned int offset;
memcpy(&offset, keyp, sizeof(offset));
fadFree(pkgs, offset);
}
#ifdef DYING
else {
DB * db = dbi->dbi_db;
if (db)
rc = db->del(db, &key, 0);
rc = cvtdberr(dbi, "db->del", rc, _debug);
}
#else
else
rc = EINVAL;
#endif
return rc;
}
static int db1cput(dbiIndex dbi, /*@unused@*/ DBC * dbcursor,
const void * keyp, size_t keylen,
const void * datap, size_t datalen,
/*@unused@*/ unsigned int flags)
/*@globals fileSystem @*/
/*@modifies dbi, datap, fileSystem @*/
{
DBT key, data;
int rc = 0;
memset(&key, 0, sizeof(key));
memset(&data, 0, sizeof(data));
key.data = (void *)keyp;
key.size = keylen;
data.data = (void *)datap;
data.size = datalen;
if (dbi->dbi_rpmtag == RPMDBI_PACKAGES) {
FD_t pkgs = dbi->dbi_db;
unsigned int offset;
memcpy(&offset, key.data, sizeof(offset));
if (offset == 0) { /* XXX simulated offset 0 record */
/* XXX hack: return offset as data, free in db1cput */
if (data.size == sizeof(offset))
/*@-unqualifiedtrans@*/ free(data.data); /*@=unqualifiedtrans@*/
} else { /* XXX simulated DB_KEYLAST */
Header h = headerLoad(data.data);
int newSize = headerSizeof(h, HEADER_MAGIC_NO);
(void)Fseek(pkgs, offset, SEEK_SET);
fdSetContentLength(pkgs, newSize);
rc = headerWrite(pkgs, h, HEADER_MAGIC_NO);
fdSetContentLength(pkgs, -1);
if (rc)
rc = EIO;
h = headerFree(h);
}
}
#ifdef DYING
else {
DB * db = dbi->dbi_db;
if (db)
rc = db->put(db, &key, &data, 0);
rc = cvtdberr(dbi, "db->put", rc, _debug);
}
#else
else
rc = EINVAL;
#endif
return rc;
}
static int db1ccount(/*@unused@*/ dbiIndex dbi, /*@unused@*/ DBC * dbcursor,
/*@unused@*/ /*@out@*/ unsigned int * countp,
/*@unused@*/ unsigned int flags)
/*@*/
{
return EINVAL;
}
static int db1byteswapped(/*@unused@*/dbiIndex dbi)
/*@*/
{
return 0;
}
static int db1stat(/*@unused@*/ dbiIndex dbi, /*@unused@*/ unsigned int flags)
/*@*/
{
return EINVAL;
}
static int db1close(/*@only@*/ dbiIndex dbi, /*@unused@*/ unsigned int flags)
/*@globals rpmGlobalMacroContext,
fileSystem @*/
/*@modifies dbi, rpmGlobalMacroContext, fileSystem @*/
{
rpmdb rpmdb = dbi->dbi_rpmdb;
const char * base = db1basename(dbi->dbi_rpmtag);
const char * urlfn = rpmGenPath(rpmdb->db_root, rpmdb->db_home, base);
const char * fn;
int rc = 0;
(void) urlPath(urlfn, &fn);
/*@-branchstate@*/
if (dbi->dbi_db) {
if (dbi->dbi_rpmtag == RPMDBI_PACKAGES) {
FD_t pkgs = dbi->dbi_db;
rc = Fclose(pkgs);
}
#ifdef DYING
else {
DB * db = dbi->dbi_db;
rc = db->close(db);
rc = cvtdberr(dbi, "db->close", rc, _debug);
}
#else
else
rc = EINVAL;
#endif
dbi->dbi_db = NULL;
}
/*@=branchstate@*/
rpmMessage(RPMMESS_DEBUG, _("closed db file %s\n"), urlfn);
/* Remove temporary databases */
if (dbi->dbi_temporary) {
rpmMessage(RPMMESS_DEBUG, _("removed db file %s\n"), urlfn);
(void) unlink(fn);
}
dbi = db3Free(dbi);
base = _free(base);
urlfn = _free(urlfn);
return rc;
}
static int db1open(/*@keep@*/ rpmdb rpmdb, int rpmtag,
/*@out@*/ dbiIndex * dbip)
/*@globals rpmGlobalMacroContext,
fileSystem @*/
/*@modifies *dbip, rpmGlobalMacroContext, fileSystem @*/
{
/*@-nestedextern@*/
extern struct _dbiVec db1vec;
/*@=nestedextern@*/
const char * base = NULL;
const char * urlfn = NULL;
const char * fn = NULL;
dbiIndex dbi = NULL;
int rc = 0;
if (dbip)
*dbip = NULL;
if ((dbi = db3New(rpmdb, rpmtag)) == NULL)
return EFAULT;
dbi->dbi_api = DB_VERSION_MAJOR;
base = db1basename(rpmtag);
urlfn = rpmGenPath(rpmdb->db_root, rpmdb->db_home, base);
(void) urlPath(urlfn, &fn);
if (!(fn && *fn != '\0')) {
rpmError(RPMERR_DBOPEN, _("bad db file %s\n"), urlfn);
rc = EFAULT;
goto exit;
}
rpmMessage(RPMMESS_DEBUG, _("opening db file %s mode 0x%x\n"),
urlfn, dbi->dbi_mode);
if (dbi->dbi_rpmtag == RPMDBI_PACKAGES) {
FD_t pkgs;
pkgs = fadOpen(fn, dbi->dbi_mode, dbi->dbi_perms);
if (Ferror(pkgs)) {
rc = errno; /* XXX check errno validity */
goto exit;
}
/* XXX HACK: fcntl lock if db3 (DB_INIT_CDB | DB_INIT_LOCK) specified */
if (dbi->dbi_lockdbfd || (dbi->dbi_eflags & 0x30)) {
struct flock l;
l.l_whence = 0;
l.l_start = 0;
l.l_len = 0;
l.l_type = (dbi->dbi_mode & O_RDWR) ? F_WRLCK : F_RDLCK;
if (Fcntl(pkgs, F_SETLK, (void *) &l)) {
rc = errno; /* XXX check errno validity */
rpmError(RPMERR_FLOCK, _("cannot get %s lock on database\n"),
((dbi->dbi_mode & O_RDWR) ? _("exclusive") : _("shared")));
goto exit;
}
}
dbi->dbi_db = pkgs;
}
#ifdef DYING
else {
void * dbopeninfo = NULL;
int dbimode = dbi->dbi_mode;
if (dbi->dbi_temporary)
dbimode |= (O_CREAT | O_RDWR);
dbi->dbi_db = dbopen(fn, dbimode, dbi->dbi_perms,
db3_to_dbtype(dbi->dbi_type), dbopeninfo);
if (dbi->dbi_db == NULL) rc = errno;
}
#else
else
rc = EINVAL;
#endif
exit:
if (rc == 0 && dbi->dbi_db != NULL && dbip) {
dbi->dbi_vec = &db1vec;
if (dbip) *dbip = dbi;
} else
(void) db1close(dbi, 0);
base = _free(base);
urlfn = _free(urlfn);
return rc;
}
/*@=onlytrans@*/
/** \ingroup db1
*/
/*@-exportheadervar@*/
/*@observer@*/ /*@unchecked@*/
struct _dbiVec db1vec = {
DB_VERSION_MAJOR, DB_VERSION_MINOR, DB_VERSION_PATCH,
db1open, db1close, db1sync, db1copen, db1cclose, db1cdel, db1cget, db1cput,
db1ccount, db1byteswapped, db1stat
};
/*@=exportheadervar@*/
/*@=type@*/
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