From 9e7adb8f14303edf0262744cea7a7f0a650f8ca2 Mon Sep 17 00:00:00 2001
From: Panu Matilainen <pmatilai@redhat.com>
Date: Fri, 14 Sep 2012 08:41:01 +0300
Subject: Change fpLookup() to return malloced memory (on first call)

- If the fingerprint pointer passed to it is NULL then allocate space
  for a new fingerprint, otherwise reuse the previous space. This should
  allow optimizing the case where repeatedly calling and directory
  doesn't change inside fpc so callers dont need special-case code
  for this. For now, we dont care about optimizations, other than
  making it possible later.
---
 lib/fprint.c      | 17 +++++++++++++----
 lib/fprint.h      |  2 +-
 lib/rpmdb.c       |  5 +++--
 lib/transaction.c | 12 +++---------
 4 files changed, 20 insertions(+), 16 deletions(-)

diff --git a/lib/fprint.c b/lib/fprint.c
index a31e54619..a0aef4a5b 100644
--- a/lib/fprint.c
+++ b/lib/fprint.c
@@ -108,7 +108,7 @@ static const struct fprintCacheEntry_s * cacheContainsDirectory(
     return NULL;
 }
 
-int fpLookup(fingerPrintCache cache,
+static int doLookup(fingerPrintCache cache,
 	     const char * dirName, const char * baseName, int scareMemory,
 	     fingerPrint *fp)
 {
@@ -230,6 +230,15 @@ exit:
     return 0;
 }
 
+int fpLookup(fingerPrintCache cache,
+             const char * dirName, const char * baseName, int scareMemory,
+             fingerPrint **fp)
+{
+    if (*fp == NULL)
+	*fp = xcalloc(1, sizeof(**fp));
+    return doLookup(cache, dirName, baseName, scareMemory, *fp);
+}
+
 /**
  * Return hash value for a finger print.
  * Hash based on dev and inode only!
@@ -277,7 +286,7 @@ int fpLookupEquals(fingerPrintCache cache, fingerPrint *fp,
 	          const char * dirName, const char * baseName)
 {
     struct fingerPrint_s ofp;
-    fpLookup(cache, dirName, baseName, 1, &ofp);
+    doLookup(cache, dirName, baseName, 1, &ofp);
     return FP_EQUAL(*fp, ofp);
 }
 
@@ -297,7 +306,7 @@ fingerPrint * fpLookupList(fingerPrintCache cache, rpmstrPool pool,
 	    fps[i].subDir = fps[i - 1].subDir;
 	    fps[i].baseName = rpmstrPoolStr(pool, baseNames[i]);
 	} else {
-	    fpLookup(cache,
+	    doLookup(cache,
 		     rpmstrPoolStr(pool, dirNames[dirIndexes[i]]),
 		     rpmstrPoolStr(pool, baseNames[i]),
 		     1, &fps[i]);
@@ -364,7 +373,7 @@ static void fpLookupSubdir(rpmFpHash symlinks, fingerPrintCache fpc, rpmte p, in
 			rstrscat(&link, endbasename+1, "/", NULL);
 		   }
 
-		   fpLookup(fpc, link, fp->baseName, 0, fp);
+		   doLookup(fpc, link, fp->baseName, 0, fp);
 
 		   free(link);
 		   free(currentsubdir);
diff --git a/lib/fprint.h b/lib/fprint.h
index 148675354..2a2b7cf03 100644
--- a/lib/fprint.h
+++ b/lib/fprint.h
@@ -84,7 +84,7 @@ dev_t fpEntryDev(fingerPrintCache cache, fingerPrint *fp);
 RPM_GNUC_INTERNAL
 int fpLookup(fingerPrintCache cache,
 	     const char * dirName, const char * baseName, int scareMemory,
-	     fingerPrint *fp);
+	     fingerPrint **fp);
 
 /**
  * Compare two finger print entries.
diff --git a/lib/rpmdb.c b/lib/rpmdb.c
index a6600cd31..22d2fe762 100644
--- a/lib/rpmdb.c
+++ b/lib/rpmdb.c
@@ -933,7 +933,7 @@ static int rpmdbFindByFile(rpmdb db, dbiIndex dbi, const char *filespec,
     char * dirName = NULL;
     const char * baseName;
     fingerPrintCache fpc = NULL;
-    fingerPrint fp1;
+    fingerPrint * fp1 = NULL;
     dbiIndexSet allMatches = NULL;
     unsigned int i;
     int rc = -2; /* assume error */
@@ -997,7 +997,7 @@ static int rpmdbFindByFile(rpmdb db, dbiIndex dbi, const char *filespec,
 
 	    if (!skip) {
 		const char *dirName = dirNames[dirIndexes[num]];
-		if (fpLookupEquals(fpc, &fp1, dirName, baseNames[num])) {
+		if (fpLookupEquals(fpc, fp1, dirName, baseNames[num])) {
 		    struct dbiIndexItem rec = { 
 			.hdrNum = dbiIndexRecordOffset(allMatches, i),
 			.tagNum = dbiIndexRecordFileNumber(allMatches, i),
@@ -1020,6 +1020,7 @@ static int rpmdbFindByFile(rpmdb db, dbiIndex dbi, const char *filespec,
 	headerFree(h);
     }
 
+    free(fp1);
     fpCacheFree(fpc);
 
     if ((*matches)->count == 0) {
diff --git a/lib/transaction.c b/lib/transaction.c
index 8bcf5aac3..1b00194a1 100644
--- a/lib/transaction.c
+++ b/lib/transaction.c
@@ -971,7 +971,7 @@ void checkInstalledFiles(rpmts ts, uint64_t fileCount, fingerPrintCache fpc)
     while (h != NULL) {
 	headerGetFlags hgflags = HEADERGET_MINMEM;
 	struct rpmtd_s bnames, dnames, dindexes, ostates;
-	fingerPrint fp, *fpp;
+	fingerPrint *fpp = NULL;
 	unsigned int installedPkg;
 	int beingRemoved = 0;
 	rpmfi otherFi = NULL;
@@ -1014,14 +1014,7 @@ void checkInstalledFiles(rpmts ts, uint64_t fileCount, fingerPrintCache fpc)
 		dirName = rpmtdGetString(&dnames);
 		baseName = rpmtdGetString(&bnames);
 
-		if (dirName == oldDir) {
-		    /* directory is the same as last round */
-		    fp.baseName = baseName;
-		} else {
-		    fpLookup(fpc, dirName, baseName, 1, &fp);
-		    oldDir = dirName;
-		}
-		fpp = &fp;
+		fpLookup(fpc, dirName, baseName, 1, &fpp);
 	    } else {
 		fpp = rpmfiFpsIndex(otherFi, fileNum);
 	    }
@@ -1063,6 +1056,7 @@ void checkInstalledFiles(rpmts ts, uint64_t fileCount, fingerPrintCache fpc)
 	    rpmtdFreeData(&bnames);
 	    rpmtdFreeData(&dnames);
 	    rpmtdFreeData(&dindexes);
+	    free(fpp);
 	}
 	headerFree(h);
 	h = newheader;
-- 
cgit v1.2.3