File libtar-1.2.20-fix-resource-leaks.patch of Package libtar

Overview Repositories Revisions Requests Users Attributes Meta

File libtar-1.2.20-fix-resource-leaks.patch of Package libtar

From abd0274e6b2f708e9eaa29414b07b3f542cec694 Mon Sep 17 00:00:00 2001
From: Kamil Dudka <kdudka@redhat.com>
Date: Tue, 15 Oct 2013 19:48:41 -0400
Subject: [PATCH 1/3] fix file descriptor leaks reported by cppcheck

Bug: https://bugzilla.redhat.com/785760
---
 lib/append.c    |   14 +++++++++-----
 lib/extract.c   |    4 ++++
 libtar/libtar.c |    3 +++
 3 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/lib/append.c b/lib/append.c
index e8bd89d..ff58532 100644
--- a/lib/append.c
+++ b/lib/append.c
@@ -216,6 +216,7 @@ tar_append_regfile(TAR *t, const char *realname)
 	int filefd;
 	int i, j;
 	size_t size;
+	int rv = -1;
 
 	filefd = open(realname, O_RDONLY);
 	if (filefd == -1)
@@ -234,25 +235,28 @@ tar_append_regfile(TAR *t, const char *realname)
 		{
 			if (j != -1)
 				errno = EINVAL;
-			return -1;
+			goto fail;
 		}
 		if (tar_block_write(t, &block) == -1)
-			return -1;
+			goto fail;
 	}
 
 	if (i > 0)
 	{
 		j = read(filefd, &block, i);
 		if (j == -1)
-			return -1;
+			goto fail;
 		memset(&(block[i]), 0, T_BLOCKSIZE - i);
 		if (tar_block_write(t, &block) == -1)
-			return -1;
+			goto fail;
 	}
 
+	/* success! */
+	rv = 0;
+fail:
 	close(filefd);
 
-	return 0;
+	return rv;
 }
 
 
diff --git a/lib/extract.c b/lib/extract.c
index 36357e7..9fc6ad5 100644
--- a/lib/extract.c
+++ b/lib/extract.c
@@ -228,13 +228,17 @@ tar_extract_regfile(TAR *t, char *realname)
 		{
 			if (k != -1)
 				errno = EINVAL;
+			close(fdout);
 			return -1;
 		}
 
 		/* write block to output file */
 		if (write(fdout, buf,
 			  ((i > T_BLOCKSIZE) ? T_BLOCKSIZE : i)) == -1)
+		{
+			close(fdout);
 			return -1;
+		}
 	}
 
 	/* close output file */
diff --git a/libtar/libtar.c b/libtar/libtar.c
index 9fa92b2..bb5644c 100644
--- a/libtar/libtar.c
+++ b/libtar/libtar.c
@@ -83,7 +83,10 @@ gzopen_frontend(char *pathname, int oflags, int mode)
 		return -1;
 
 	if ((oflags & O_CREAT) && fchmod(fd, mode))
+	{
+		close(fd);
 		return -1;
+	}
 
 	gzf = gzdopen(fd, gzoflags);
 	if (!gzf)
-- 
1.7.1

From 36629a41208375f5105427e98078127551692028 Mon Sep 17 00:00:00 2001
From: Huzaifa Sidhpurwala <huzaifas@fedoraproject.org>
Date: Tue, 15 Oct 2013 20:02:58 -0400
Subject: [PATCH 2/3] fix memleak on tar_open() failure

---
 lib/handle.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/lib/handle.c b/lib/handle.c
index 33a262c..002d23c 100644
--- a/lib/handle.c
+++ b/lib/handle.c
@@ -82,6 +82,7 @@ tar_open(TAR **t, const char *pathname, tartype_t *type,
 	(*t)->fd = (*((*t)->type->openfunc))(pathname, oflags, mode);
 	if ((*t)->fd == -1)
 	{
+		libtar_hash_free((*t)->h, NULL);
 		free(*t);
 		return -1;
 	}
-- 
1.7.1

From f3c711cf3054ff366a1a3500cdc8c64ecc2d2da6 Mon Sep 17 00:00:00 2001
From: Huzaifa Sidhpurwala <huzaifas@fedoraproject.org>
Date: Tue, 15 Oct 2013 20:05:04 -0400
Subject: [PATCH 3/3] fix memleaks in libtar sample program

---
 libtar/libtar.c |   29 ++++++++++++++++++-----------
 1 files changed, 18 insertions(+), 11 deletions(-)

diff --git a/libtar/libtar.c b/libtar/libtar.c
index bb5644c..23f8741 100644
--- a/libtar/libtar.c
+++ b/libtar/libtar.c
@@ -253,6 +253,7 @@ extract(char *tarfile, char *rootdir)
 	if (tar_extract_all(t, rootdir) != 0)
 	{
 		fprintf(stderr, "tar_extract_all(): %s\n", strerror(errno));
+		tar_close(t);
 		return -1;
 	}
 
@@ -270,12 +271,13 @@ extract(char *tarfile, char *rootdir)
 
 
 void
-usage()
+usage(void *rootdir)
 {
 	printf("Usage: %s [-C rootdir] [-g] [-z] -x|-t filename.tar\n",
 	       progname);
 	printf("       %s [-C rootdir] [-g] [-z] -c filename.tar ...\n",
 	       progname);
+	free(rootdir);
 	exit(-1);
 }
 
@@ -292,6 +294,7 @@ main(int argc, char *argv[])
 	int c;
 	int mode = 0;
 	libtar_list_t *l;
+	int return_code = -2;
 
 	progname = basename(argv[0]);
 
@@ -313,17 +316,17 @@ main(int argc, char *argv[])
 			break;
 		case 'c':
 			if (mode)
-				usage();
+				usage(rootdir);
 			mode = MODE_CREATE;
 			break;
 		case 'x':
 			if (mode)
-				usage();
+				usage(rootdir);
 			mode = MODE_EXTRACT;
 			break;
 		case 't':
 			if (mode)
-				usage();
+				usage(rootdir);
 			mode = MODE_LIST;
 			break;
 #ifdef HAVE_LIBZ
@@ -332,7 +335,7 @@ main(int argc, char *argv[])
 			break;
 #endif /* HAVE_LIBZ */
 		default:
-			usage();
+			usage(rootdir);
 		}
 
 	if (!mode || ((argc - optind) < (mode == MODE_CREATE ? 2 : 1)))
@@ -341,7 +344,7 @@ main(int argc, char *argv[])
 		printf("argc - optind == %d\tmode == %d\n", argc - optind,
 		       mode);
 #endif
-		usage();
+		usage(rootdir);
 	}
 
 #ifdef DEBUG
@@ -351,21 +354,25 @@ main(int argc, char *argv[])
 	switch (mode)
 	{
 	case MODE_EXTRACT:
-		return extract(argv[optind], rootdir);
+		return_code = extract(argv[optind], rootdir);
+		break;
 	case MODE_CREATE:
 		tarfile = argv[optind];
 		l = libtar_list_new(LIST_QUEUE, NULL);
 		for (c = optind + 1; c < argc; c++)
 			libtar_list_add(l, argv[c]);
-		return create(tarfile, rootdir, l);
+		return_code = create(tarfile, rootdir, l);
+		libtar_list_free(l, NULL);
+		break;
 	case MODE_LIST:
-		return list(argv[optind]);
+		return_code = list(argv[optind]);
+		break;
 	default:
 		break;
 	}
 
-	/* NOTREACHED */
-	return -2;
+	free(rootdir);
+	return return_code;
 }
 
 
-- 
1.7.1

Places

File libtar-1.2.20-fix-resource-leaks.patch of Package libtar

Places