[PATCH 2/3] db: avoid to use NULL pointer

[zhanchengbin <zhanchengbin1@huawei.com>]

Changed malloc to xmalloc.

Signed-off-by: zhanchengbin <zhanchengbin1@huawei.com>
---
  db/block.c | 2 +-
  db/check.c | 4 ++--
  db/faddr.c | 6 +++---
  db/namei.c | 2 +-
  4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/db/block.c b/db/block.c
index f31f9544..349cf6ec 100644
--- a/db/block.c
+++ b/db/block.c
@@ -180,7 +180,7 @@ dblock_f(
  		return 0;
  	}
  	nex = nb = type == TYP_DIR2 ? mp->m_dir_geo->fsbcount : 1;
-	bmp = malloc(nb * sizeof(*bmp));
+	bmp = xmalloc(nb * sizeof(*bmp));
  	bmap(bno, nb, XFS_DATA_FORK, &nex, bmp);
  	if (nex == 0) {
  		dbprintf(_("file data block is unmapped\n"));
diff --git a/db/check.c b/db/check.c
index a9c6e632..cc3c7832 100644
--- a/db/check.c
+++ b/db/check.c
@@ -1782,7 +1782,7 @@ dir_hash_add(
  	dirhash_t		*p;

  	i = DIR_HASH_FUNC(hash, addr);
-	p = malloc(sizeof(*p));
+	p = xmalloc(sizeof(*p));
  	p->next = dirhash[i];
  	dirhash[i] = p;
  	p->hashval = hash;
@@ -3094,7 +3094,7 @@ process_leaf_node_dir_v2(
  	v2 = verbose || id->ilist;
  	v = parent = 0;
  	dbno = NULLFILEOFF;
-	freetab = malloc(FREETAB_SIZE(dirsize / mp->m_dir_geo->blksize));
+	freetab = xmalloc(FREETAB_SIZE(dirsize / mp->m_dir_geo->blksize));
  	freetab->naents = (int)(dirsize / mp->m_dir_geo->blksize);
  	freetab->nents = 0;
  	for (i = 0; i < freetab->naents; i++)
diff --git a/db/faddr.c b/db/faddr.c
index 0127c5d1..cc21faaf 100644
--- a/db/faddr.c
+++ b/db/faddr.c
@@ -137,7 +137,7 @@ fa_cfileoffd(
  		return;
  	}
  	nex = nb = next == TYP_DIR2 ? mp->m_dir_geo->fsbcount : 1;
-	bmp = malloc(nb * sizeof(*bmp));
+	bmp = xmalloc(nb * sizeof(*bmp));
  	bmap(bno, nb, XFS_DATA_FORK, &nex, bmp);
  	if (nex == 0) {
  		dbprintf(_("file block is unmapped\n"));
@@ -221,7 +221,7 @@ fa_dfiloffd(
  		return;
  	}
  	nex = nb = next == TYP_DIR2 ? mp->m_dir_geo->fsbcount : 1;
-	bmp = malloc(nb * sizeof(*bmp));
+	bmp = xmalloc(nb * sizeof(*bmp));
  	bmap(bno, nb, XFS_DATA_FORK, &nex, bmp);
  	if (nex == 0) {
  		dbprintf(_("file block is unmapped\n"));
@@ -274,7 +274,7 @@ fa_dirblock(
  		return;
  	}
  	nex = mp->m_dir_geo->fsbcount;
-	bmp = malloc(nex * sizeof(*bmp));
+	bmp = xmalloc(nex * sizeof(*bmp));
  	bmap(bno, mp->m_dir_geo->fsbcount, XFS_DATA_FORK, &nex, bmp);
  	if (nex == 0) {
  		dbprintf(_("directory block is unmapped\n"));
diff --git a/db/namei.c b/db/namei.c
index e44667a9..d1a9904b 100644
--- a/db/namei.c
+++ b/db/namei.c
@@ -266,7 +266,7 @@ dir_emit(
  		 * copy the string to a buffer so that we can add the null
  		 * terminator.
  		 */
-		display_name = malloc(namelen + 1);
+		display_name = xmalloc(namelen + 1);
  		memcpy(display_name, name, namelen);
  		display_name[namelen] = 0;
  		xname.len = namelen;
-- 
2.27.0