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authorMike Frysinger <vapier@gentoo.org>2010-09-30 01:27:38 -0400
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2010-09-30 08:54:05 +0300
commitb2dc086600f64d5a2db179fb6bed79a0a78228e4 (patch)
tree9a49989ca2ec2b2ee74f1399be1d9d8469ef8af7
parent94a20240f9d6776619d7652013bb10131ddad1fc (diff)
mtd-utils: new memory wrappers
The mkfs.jffs2 program has local wrappers for memory related functions that are useful beyond mkfs.jffs2, so break them out into a common header. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
-rw-r--r--include/common.h8
-rw-r--r--include/xalloc.h80
-rw-r--r--mkfs.jffs2.c41
3 files changed, 88 insertions, 41 deletions
diff --git a/include/common.h b/include/common.h
index 472315e..9f49f55 100644
--- a/include/common.h
+++ b/include/common.h
@@ -58,6 +58,9 @@ extern "C" {
fprintf(stderr, "%s: error!: " fmt "\n", PROGRAM_NAME, ##__VA_ARGS__); \
-1; \
})
+#define errmsg_die(fmt, ...) do { \
+ exit(errmsg(fmt, ##__VA_ARGS__)); \
+} while(0)
/* System error messages */
#define sys_errmsg(fmt, ...) ({ \
@@ -69,6 +72,9 @@ extern "C" {
fprintf(stderr, "error %d (%s)\n", _err, strerror(_err)); \
-1; \
})
+#define sys_errmsg_die(fmt, ...) do { \
+ exit(sys_errmsg(fmt, ##__VA_ARGS__)); \
+} while(0)
/* Warnings */
#define warnmsg(fmt, ...) do { \
@@ -103,6 +109,8 @@ simple_strtoX(strtoll, long int)
simple_strtoX(strtoul, unsigned long int)
simple_strtoX(strtoull, unsigned long int)
+#include "xalloc.h"
+
#ifdef __cplusplus
}
#endif
diff --git a/include/xalloc.h b/include/xalloc.h
new file mode 100644
index 0000000..5d145d9
--- /dev/null
+++ b/include/xalloc.h
@@ -0,0 +1,80 @@
+/*
+ * memory wrappers
+ *
+ * Copyright (c) Artem Bityutskiy, 2007, 2008
+ * Copyright 2001, 2002 Red Hat, Inc.
+ * 2001 David A. Schleef <ds@lineo.com>
+ * 2002 Axis Communications AB
+ * 2001, 2002 Erik Andersen <andersen@codepoet.org>
+ * 2004 University of Szeged, Hungary
+ * 2006 KaiGai Kohei <kaigai@ak.jp.nec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __MTD_UTILS_XALLOC_H__
+#define __MTD_UTILS_XALLOC_H__
+
+#include <stdlib.h>
+#include <string.h>
+
+/*
+ * Mark these functions as unused so that gcc does not emit warnings
+ * when people include this header but don't use every function.
+ */
+
+__attribute__((unused))
+static void *xmalloc(size_t size)
+{
+ void *ptr = malloc(size);
+
+ if (ptr == NULL && size != 0)
+ sys_errmsg_die("malloc(%zu) failed", size);
+ return ptr;
+}
+
+__attribute__((unused))
+static void *xcalloc(size_t nmemb, size_t size)
+{
+ void *ptr = calloc(nmemb, size);
+
+ if (ptr == NULL && nmemb != 0 && size != 0)
+ sys_errmsg_die("calloc(%zu, %zu) failed", nmemb, size);
+ return ptr;
+}
+
+__attribute__((unused))
+static void *xrealloc(void *ptr, size_t size)
+{
+ ptr = realloc(ptr, size);
+ if (ptr == NULL && size != 0)
+ sys_errmsg_die("realloc(%p, %zu) failed", ptr, size);
+ return ptr;
+}
+
+__attribute__((unused))
+static char *xstrdup(const char *s)
+{
+ char *t;
+
+ if (s == NULL)
+ return NULL;
+ t = strdup(s);
+ if (t == NULL)
+ sys_errmsg_die("strdup(%p) failed", s);
+ return t;
+}
+
+#endif /* !__MTD_UTILS_XALLOC_H__ */
diff --git a/mkfs.jffs2.c b/mkfs.jffs2.c
index 1abe09c..1ea3598 100644
--- a/mkfs.jffs2.c
+++ b/mkfs.jffs2.c
@@ -110,7 +110,6 @@ static int squash_uids = 0;
static int squash_perms = 0;
static int fake_times = 0;
int target_endian = __BYTE_ORDER;
-static const char *const memory_exhausted = "memory exhausted";
uint32_t find_hardlink(struct filesystem_entry *e)
{
@@ -197,46 +196,6 @@ static void perror_msg_and_die(const char *s, ...)
exit(EXIT_FAILURE);
}
-#ifndef DMALLOC
-extern void *xmalloc(size_t size)
-{
- void *ptr = malloc(size);
-
- if (ptr == NULL && size != 0)
- error_msg_and_die(memory_exhausted);
- return ptr;
-}
-
-extern void *xcalloc(size_t nmemb, size_t size)
-{
- void *ptr = calloc(nmemb, size);
-
- if (ptr == NULL && nmemb != 0 && size != 0)
- error_msg_and_die(memory_exhausted);
- return ptr;
-}
-
-extern void *xrealloc(void *ptr, size_t size)
-{
- ptr = realloc(ptr, size);
- if (ptr == NULL && size != 0)
- error_msg_and_die(memory_exhausted);
- return ptr;
-}
-
-extern char *xstrdup(const char *s)
-{
- char *t;
-
- if (s == NULL)
- return NULL;
- t = strdup(s);
- if (t == NULL)
- error_msg_and_die(memory_exhausted);
- return t;
-}
-#endif
-
extern char *xreadlink(const char *path)
{
static const int GROWBY = 80; /* how large we will grow strings by */