database/postgres
database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-04-22 23:02:54 +03:00
Code

pg_dump: Fix ArchiveEntry handling of some empty values

Browse Source 
Commit f831d4acc changed what pg_dump emits for some empty fields: they
were output as empty strings before, NULL pointer afterwards.  That
makes old pg_restore unable to work (crash) with such files, which is
unacceptable.  Return to the original representation by explicitly
setting those struct members to "" where needed; remove some no longer
needed checks for NULL input.

We can declutter the code a little by returning to NULLs when we next
update the archive version, so add a note to remind us later.

Discussion: https://postgr.es/m/20190225074539.az6j3u464cvsoxh6@depesz.com
Reported-by: hubert depesz lubaczewski
Author: Dmitry Dolgov
This commit is contained in:
Alvaro Herrera 2019-02-28 17:16:08 -03:00
parent 3f61999cc9
commit 19455c9f56
3 changed files with 58 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
src/bin/pg_dump/pg_backup_archiver.c
View File

@ -1090,10 +1090,10 @@ ArchiveEntry(Archive *AHX, CatalogId catalogId, DumpId dumpId,
newToc->tag = pg_strdup(opts->tag);
newToc->namespace = opts->namespace ? pg_strdup(opts->namespace) : NULL;
newToc->tablespace = opts->tablespace ? pg_strdup(opts->tablespace) : NULL;
newToc->owner = opts->owner ? pg_strdup(opts->owner) : NULL;
newToc->owner = pg_strdup(opts->owner);
newToc->desc = pg_strdup(opts->description);
newToc->defn = opts->createStmt ? pg_strdup(opts->createStmt) : NULL;
newToc->dropStmt = opts->dropStmt ? pg_strdup(opts->dropStmt) : NULL;
newToc->defn = pg_strdup(opts->createStmt);
newToc->dropStmt = pg_strdup(opts->dropStmt);
newToc->copyStmt = opts->copyStmt ? pg_strdup(opts->copyStmt) : NULL;
if (opts->nDeps > 0)
@ -3600,7 +3600,7 @@ _printTocEntry(ArchiveHandle *AH, TocEntry *te, bool isData)
}
else
{
if (te->defn && strlen(te->defn) > 0)
if (strlen(te->defn) > 0)
ahprintf(AH, "%s\n\n", te->defn);
}
@ -3611,8 +3611,7 @@ _printTocEntry(ArchiveHandle *AH, TocEntry *te, bool isData)
* with DROP commands must appear in one list or the other.
*/
if (!ropt->noOwner && !ropt->use_setsessauth &&
te->owner && strlen(te->owner) > 0 &&
te->dropStmt && strlen(te->dropStmt) > 0)
strlen(te->owner) > 0 && strlen(te->dropStmt) > 0)
{
if (strcmp(te->desc, "AGGREGATE") == 0 ||
strcmp(te->desc, "BLOB") == 0 ||

7
src/bin/pg_dump/pg_backup_archiver.h
View File

@ -95,7 +95,12 @@ typedef z_stream *z_streamp;
#define K_VERS_1_13 MAKE_ARCHIVE_VERSION(1, 13, 0) /* change search_path
* behavior */
/* Current archive version number (the format we can output) */
/*
* Current archive version number (the format we can output)
*
* Note: If you update the current archive version, consider
* https://postgr.es/m/20190227123217.GA27552@alvherre.pgsql
*/
#define K_VERS_MAJOR 1
#define K_VERS_MINOR 13
#define K_VERS_REV 0

56
src/bin/pg_dump/pg_dump.c
View File

@ -2165,6 +2165,8 @@ dumpTableData(Archive *fout, TableDataInfo *tdinfo)
.owner = tbinfo->rolname,
.description = "TABLE DATA",
.section = SECTION_DATA,
.createStmt = "",
.dropStmt = "",
.copyStmt = copyStmt,
.deps = &(tbinfo->dobj.dumpId),
.nDeps = 1,
@ -2219,6 +2221,7 @@ refreshMatViewData(Archive *fout, TableDataInfo *tdinfo)
.description = "MATERIALIZED VIEW DATA",
.section = SECTION_POST_DATA,
.createStmt = q->data,
.dropStmt = "",
.deps = tdinfo->dobj.dependencies,
.nDeps = tdinfo->dobj.nDeps));
@ -2784,6 +2787,7 @@ dumpDatabase(Archive *fout)
.description = "COMMENT",
.section = SECTION_NONE,
.createStmt = dbQry->data,
.dropStmt = "",
.deps = &dbDumpId,
.nDeps = 1));
}
@ -2813,6 +2817,7 @@ dumpDatabase(Archive *fout)
.description = "SECURITY LABEL",
.section = SECTION_NONE,
.createStmt = seclabelQry->data,
.dropStmt = "",
.deps = &dbDumpId,
.nDeps = 1));
destroyPQExpBuffer(seclabelQry);
@ -2929,8 +2934,10 @@ dumpDatabase(Archive *fout)
ArchiveEntry(fout, nilCatalogId, createDumpId(),
ARCHIVE_OPTS(.tag = "pg_largeobject",
.description = "pg_largeobject",
.owner = "",
.section = SECTION_PRE_DATA,
.createStmt = loOutQry->data));
.createStmt = loOutQry->data,
.dropStmt = ""));
PQclear(lo_res);
@ -3038,8 +3045,10 @@ dumpEncoding(Archive *AH)
ArchiveEntry(AH, nilCatalogId, createDumpId(),
ARCHIVE_OPTS(.tag = "ENCODING",
.description = "ENCODING",
.owner = "",
.section = SECTION_PRE_DATA,
.createStmt = qry->data));
.createStmt = qry->data,
.dropStmt = ""));
destroyPQExpBuffer(qry);
}
@ -3064,8 +3073,10 @@ dumpStdStrings(Archive *AH)
ArchiveEntry(AH, nilCatalogId, createDumpId(),
ARCHIVE_OPTS(.tag = "STDSTRINGS",
.description = "STDSTRINGS",
.owner = "",
.section = SECTION_PRE_DATA,
.createStmt = qry->data));
.createStmt = qry->data,
.dropStmt = ""));
destroyPQExpBuffer(qry);
}
@ -3119,8 +3130,10 @@ dumpSearchPath(Archive *AH)
ArchiveEntry(AH, nilCatalogId, createDumpId(),
ARCHIVE_OPTS(.tag = "SEARCHPATH",
.description = "SEARCHPATH",
.owner = "",
.section = SECTION_PRE_DATA,
.createStmt = qry->data));
.createStmt = qry->data,
.dropStmt = ""));
/* Also save it in AH->searchpath, in case we're doing plain text dump */
AH->searchpath = pg_strdup(qry->data);
@ -3601,6 +3614,7 @@ dumpPolicy(Archive *fout, PolicyInfo *polinfo)
.description = "ROW SECURITY",
.section = SECTION_POST_DATA,
.createStmt = query->data,
.dropStmt = "",
.deps = &(tbinfo->dobj.dumpId),
.nDeps = 1));
@ -3968,8 +3982,10 @@ dumpPublicationTable(Archive *fout, PublicationRelInfo *pubrinfo)
ARCHIVE_OPTS(.tag = tag,
.namespace = tbinfo->dobj.namespace->dobj.name,
.description = "PUBLICATION TABLE",
.owner = "",
.section = SECTION_POST_DATA,
.createStmt = query->data));
.createStmt = query->data,
.dropStmt = ""));
free(tag);
destroyPQExpBuffer(query);
@ -9393,6 +9409,7 @@ dumpComment(Archive *fout, const char *type, const char *name,
.description = "COMMENT",
.section = SECTION_NONE,
.createStmt = query->data,
.dropStmt = "",
.deps = &dumpId,
.nDeps = 1));
@ -9462,6 +9479,7 @@ dumpTableComment(Archive *fout, TableInfo *tbinfo,
.description = "COMMENT",
.section = SECTION_NONE,
.createStmt = query->data,
.dropStmt = "",
.deps = &(tbinfo->dobj.dumpId),
.nDeps = 1));
}
@ -9487,6 +9505,7 @@ dumpTableComment(Archive *fout, TableInfo *tbinfo,
.description = "COMMENT",
.section = SECTION_NONE,
.createStmt = query->data,
.dropStmt = "",
.deps = &(tbinfo->dobj.dumpId),
.nDeps = 1));
}
@ -9767,8 +9786,11 @@ dumpDumpableObject(Archive *fout, DumpableObject *dobj)
te = ArchiveEntry(fout, dobj->catId, dobj->dumpId,
ARCHIVE_OPTS(.tag = dobj->name,
.description = "BLOBS",
.owner = "",
.section = SECTION_DATA,
.dumpFn = dumpBlobs));
.dumpFn = dumpBlobs,
.createStmt = "",
.dropStmt = ""));
/*
* Set the TocEntry's dataLength in case we are doing a
@ -9973,6 +9995,7 @@ dumpExtension(Archive *fout, ExtensionInfo *extinfo)
ArchiveEntry(fout, extinfo->dobj.catId, extinfo->dobj.dumpId,
ARCHIVE_OPTS(.tag = extinfo->dobj.name,
.description = "EXTENSION",
.owner = "",
.section = SECTION_PRE_DATA,
.createStmt = q->data,
.dropStmt = delq->data));
@ -11116,6 +11139,7 @@ dumpCompositeTypeColComments(Archive *fout, TypeInfo *tyinfo)
.description = "COMMENT",
.section = SECTION_NONE,
.createStmt = query->data,
.dropStmt = "",
.deps = &(tyinfo->dobj.dumpId),
.nDeps = 1));
}
@ -11171,7 +11195,8 @@ dumpShellType(Archive *fout, ShellTypeInfo *stinfo)
.owner = stinfo->baseType->rolname,
.description = "SHELL TYPE",
.section = SECTION_PRE_DATA,
.createStmt = q->data));
.createStmt = q->data,
.dropStmt = ""));
destroyPQExpBuffer(q);
}
@ -12116,6 +12141,7 @@ dumpCast(Archive *fout, CastInfo *cast)
ArchiveEntry(fout, cast->dobj.catId, cast->dobj.dumpId,
ARCHIVE_OPTS(.tag = labelq->data,
.description = "CAST",
.owner = "",
.section = SECTION_PRE_DATA,
.createStmt = defqry->data,
.dropStmt = delqry->data));
@ -12243,6 +12269,7 @@ dumpTransform(Archive *fout, TransformInfo *transform)
ArchiveEntry(fout, transform->dobj.catId, transform->dobj.dumpId,
ARCHIVE_OPTS(.tag = labelq->data,
.description = "TRANSFORM",
.owner = "",
.section = SECTION_PRE_DATA,
.createStmt = defqry->data,
.dropStmt = delqry->data,
@ -12626,6 +12653,7 @@ dumpAccessMethod(Archive *fout, AccessMethodInfo *aminfo)
ArchiveEntry(fout, aminfo->dobj.catId, aminfo->dobj.dumpId,
ARCHIVE_OPTS(.tag = aminfo->dobj.name,
.description = "ACCESS METHOD",
.owner = "",
.section = SECTION_PRE_DATA,
.createStmt = q->data,
.dropStmt = delq->data));
@ -14077,6 +14105,7 @@ dumpTSParser(Archive *fout, TSParserInfo *prsinfo)
ARCHIVE_OPTS(.tag = prsinfo->dobj.name,
.namespace = prsinfo->dobj.namespace->dobj.name,
.description = "TEXT SEARCH PARSER",
.owner = "",
.section = SECTION_PRE_DATA,
.createStmt = q->data,
.dropStmt = delq->data));
@ -14215,6 +14244,7 @@ dumpTSTemplate(Archive *fout, TSTemplateInfo *tmplinfo)
ARCHIVE_OPTS(.tag = tmplinfo->dobj.name,
.namespace = tmplinfo->dobj.namespace->dobj.name,
.description = "TEXT SEARCH TEMPLATE",
.owner = "",
.section = SECTION_PRE_DATA,
.createStmt = q->data,
.dropStmt = delq->data));
@ -14684,7 +14714,8 @@ dumpDefaultACL(Archive *fout, DefaultACLInfo *daclinfo)
.owner = daclinfo->defaclrole,
.description = "DEFAULT ACL",
.section = SECTION_POST_DATA,
.createStmt = q->data));
.createStmt = q->data,
.dropStmt = ""));
destroyPQExpBuffer(tag);
destroyPQExpBuffer(q);
@ -14782,6 +14813,7 @@ dumpACL(Archive *fout, CatalogId objCatId, DumpId objDumpId,
.description = "ACL",
.section = SECTION_NONE,
.createStmt = sql->data,
.dropStmt = "",
.deps = &objDumpId,
.nDeps = 1));
destroyPQExpBuffer(tag);
@ -14871,6 +14903,7 @@ dumpSecLabel(Archive *fout, const char *type, const char *name,
.description = "SECURITY LABEL",
.section = SECTION_NONE,
.createStmt = query->data,
.dropStmt = "",
.deps = &dumpId,
.nDeps = 1));
destroyPQExpBuffer(tag);
@ -14954,6 +14987,7 @@ dumpTableSecLabel(Archive *fout, TableInfo *tbinfo, const char *reltypename)
.description = "SECURITY LABEL",
.section = SECTION_NONE,
.createStmt = query->data,
.dropStmt = "",
.deps = &(tbinfo->dobj.dumpId),
.nDeps = 1));
}
@ -16313,8 +16347,10 @@ dumpIndexAttach(Archive *fout, IndexAttachInfo *attachinfo)
ARCHIVE_OPTS(.tag = attachinfo->dobj.name,
.namespace = attachinfo->dobj.namespace->dobj.name,
.description = "INDEX ATTACH",
.owner = "",
.section = SECTION_POST_DATA,
.createStmt = q->data));
.createStmt = q->data,
.dropStmt = ""));
destroyPQExpBuffer(q);
}
@ -16944,6 +16980,7 @@ dumpSequence(Archive *fout, TableInfo *tbinfo)
.description = "SEQUENCE OWNED BY",
.section = SECTION_PRE_DATA,
.createStmt = query->data,
.dropStmt = "",
.deps = &(tbinfo->dobj.dumpId),
.nDeps = 1));
}
@ -17012,6 +17049,7 @@ dumpSequenceData(Archive *fout, TableDataInfo *tdinfo)
.description = "SEQUENCE SET",
.section = SECTION_DATA,
.createStmt = query->data,
.dropStmt = "",
.deps = &(tbinfo->dobj.dumpId),
.nDeps = 1));