Import ealloc.c from ubase

Makefile

@@ -21,6 +21,7 @@ LIB = \
 	util/concat.o    \
 	util/cp.o        \
 	util/crypt.o     \
+	util/ealloc.o    \
 	util/enmasse.o   \
 	util/eprintf.o   \
 	util/estrtod.o   \

util.h

@@ -17,14 +17,19 @@ extern char *argv0;
 char *agetcwd(void);
 void apathmax(char **, long *);
 void enmasse(int, char **, int (*)(const char *, const char *));
+void *ecalloc(size_t, size_t);
+void *emalloc(size_t size);
+void *erealloc(void *, size_t);
 void eprintf(const char *, ...);
 void enprintf(int, const char *, ...);
+char *estrdup(const char *);
 double estrtod(const char *);
 long estrtol(const char *, int);
 void fnck(const char *, const char *, int (*)(const char *, const char *));
 char *humansize(double);
 void putword(const char *);
 void recurse(const char *, void (*)(const char *));
+
 #undef strlcat
 size_t strlcat(char *, const char *, size_t);
 #undef strlcpy

util/ealloc.c

@@ -0,0 +1,47 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdlib.h>
+#include <string.h>
+
+#include "../util.h"
+
+void *
+ecalloc(size_t nmemb, size_t size)
+{
+	void *p;
+
+	p = calloc(nmemb, size);
+	if (!p)
+		eprintf("calloc: out of memory\n");
+	return p;
+}
+
+void *
+emalloc(size_t size)
+{
+	void *p;
+
+	p = malloc(size);
+	if (!p)
+		eprintf("malloc: out of memory\n");
+	return p;
+}
+
+void *
+erealloc(void *p, size_t size)
+{
+	p = realloc(p, size);
+	if (!p)
+		eprintf("realloc: out of memory\n");
+	return p;
+}
+
+char *
+estrdup(const char *s)
+{
+	char *p;
+
+	p = strdup(s);
+	if (!p)
+		eprintf("strdup: out of memory\n");
+	return p;
+}