Remove scattered checks for malloc success.

malloc should never fail, and if it does it is unlikely
that anything else useful can be done.  Best approach is to
abort and let some super-daemon restart.

So define xmalloc, xcalloc, xrealloc, xstrdup which don't
fail but just print a message and exit.  Then use those
removing all the tests for failure.

Also replace all "malloc;memset" sequences with 'xcalloc'.

Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 1 insertions, 12 deletions

diff --git a/bitmap.c b/bitmap.c
index 351f08a0..4144977b 100644
--- a/bitmap.c
+++ b/bitmap.c
@@ -138,18 +138,7 @@ bitmap_info_t *bitmap_fd_read(int fd, int brief)
 	}
 	n = read(fd, buf, 8192);
 
-	info = malloc(sizeof(*info));
-	if (info == NULL) {
-#if __GNUC__ < 3
-		pr_err("failed to allocate %d bytes\n",
-				(int)sizeof(*info));
-#else
-		pr_err("failed to allocate %zd bytes\n",
-				sizeof(*info));
-#endif
-		free(buf);
-		return NULL;
-	}
+	info = xmalloc(sizeof(*info));
 
 	if (n < sizeof(info->sb)) {
 		pr_err("failed to read superblock of bitmap "