[PATCH] scripts: bareboxcrc32 as host and target userspacetool
Michael Grzeschik
m.grzeschik at pengutronix.de
Tue Dec 3 18:06:38 EST 2013
This patch adds the crc32 command to be build
as host and optionally as target tool.
Signed-off-by: Michael Grzeschik <m.grzeschik at pengutronix.de>
---
commands/crc.c | 63 ++++----------------------------------------------
common/Kconfig | 7 ++++++
crypto/crc32.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++
include/common.h | 2 ++
scripts/Makefile | 2 ++
scripts/bareboxcrc32.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++
scripts/bareboxenv.c | 19 ---------------
scripts/compiler.h | 25 ++++++++++++++++++++
8 files changed, 160 insertions(+), 78 deletions(-)
create mode 100644 scripts/bareboxcrc32.c
diff --git a/commands/crc.c b/commands/crc.c
index ee8dacf..824dda4 100644
--- a/commands/crc.c
+++ b/commands/crc.c
@@ -21,66 +21,8 @@
#include <command.h>
#include <fs.h>
#include <getopt.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <xfuncs.h>
#include <malloc.h>
-#include <linux/ctype.h>
-
-static int file_crc(char* filename, ulong start, ulong size, ulong *crc,
- ulong *total)
-{
- int fd, now;
- int ret = 0;
- char *buf;
-
- *total = 0;
- *crc = 0;
-
- fd = open(filename, O_RDONLY);
- if (fd < 0) {
- printf("open %s: %s\n", filename, errno_str());
- return fd;
- }
-
- if (start > 0) {
- off_t lseek_ret;
- errno = 0;
- lseek_ret = lseek(fd, start, SEEK_SET);
- if (lseek_ret == (off_t)-1 && errno) {
- perror("lseek");
- ret = -1;
- goto out;
- }
- }
-
- buf = xmalloc(4096);
-
- while (size) {
- now = min((ulong)4096, size);
- now = read(fd, buf, now);
- if (now < 0) {
- ret = now;
- perror("read");
- goto out_free;
- }
- if (!now)
- break;
- *crc = crc32(*crc, buf, now);
- size -= now;
- *total += now;
- }
-
- printf ("CRC32 for %s 0x%08lx ... 0x%08lx ==> 0x%08lx",
- filename, start, start + *total - 1, *crc);
-
-out_free:
- free(buf);
-out:
- close(fd);
-
- return ret;
-}
+#include <environment.h>
static int crc_from_file(const char* file, ulong *crc)
{
@@ -143,6 +85,9 @@ static int do_crc(int argc, char *argv[])
if (file_crc(filename, start, size, &crc, &total) < 0)
return 1;
+ printf("CRC32 for %s 0x%08lx ... 0x%08lx ==> 0x%08lx",
+ filename, (ulong)start, (ulong)start + total - 1, crc);
+
#ifdef CONFIG_CMD_CRC_CMP
if (vfilename) {
size = total;
diff --git a/common/Kconfig b/common/Kconfig
index 4e46005..ce426f2 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -620,6 +620,13 @@ config BAREBOXENV_TARGET
'bareboxenv' is a tool to access the barebox environment from a running Linux
system. Say yes here to build it for the target.
+config BAREBOXCRC32_TARGET
+ bool
+ prompt "build bareboxcrc32 tool for target"
+ help
+ 'bareboxcrc32' is a userspacetool to generate the crc32 checksums the same way
+ barebox does. Say yes here to build it for the target.
+
config POLLER
bool "generic polling infrastructure"
diff --git a/crypto/crc32.c b/crypto/crc32.c
index 275edb4..2821c9c 100644
--- a/crypto/crc32.c
+++ b/crypto/crc32.c
@@ -10,6 +10,12 @@
#ifdef __BAREBOX__ /* Shut down "ANSI does not permit..." warnings */
#include <common.h>
+#include <xfuncs.h>
+#include <fs.h>
+#include <fcntl.h>
+#include <malloc.h>
+#include <linux/ctype.h>
+#include <errno.h>
#endif
#ifdef CONFIG_DYNAMIC_CRC_TABLE
@@ -178,3 +184,57 @@ uint32_t crc32_no_comp(uint32_t crc, const void *_buf, unsigned int len)
return crc;
}
+int file_crc(char *filename, ulong start, ulong size, ulong *crc,
+ ulong *total)
+{
+ int fd, now;
+ int ret = 0;
+ char *buf;
+
+ *total = 0;
+ *crc = 0;
+
+ fd = open(filename, O_RDONLY);
+ if (fd < 0) {
+ printf("open %s: %d\n", filename, errno);
+ return fd;
+ }
+
+ if (start > 0) {
+ off_t lseek_ret;
+ errno = 0;
+ lseek_ret = lseek(fd, start, SEEK_SET);
+ if (lseek_ret == (off_t)-1 && errno) {
+ perror("lseek");
+ ret = -1;
+ goto out;
+ }
+ }
+
+ buf = xmalloc(4096);
+
+ while (size) {
+ now = min((ulong)4096, size);
+ now = read(fd, buf, now);
+ if (now < 0) {
+ ret = now;
+ perror("read");
+ goto out_free;
+ }
+ if (!now)
+ break;
+ *crc = crc32(*crc, buf, now);
+ size -= now;
+ *total += now;
+ }
+
+out_free:
+ free(buf);
+out:
+ close(fd);
+
+ return ret;
+}
+#ifdef __BAREBOX__
+EXPORT_SYMBOL(file_crc);
+#endif
diff --git a/include/common.h b/include/common.h
index 00f1642..293f504 100644
--- a/include/common.h
+++ b/include/common.h
@@ -115,6 +115,8 @@ long simple_strtol(const char *cp,char **endp,unsigned int base);
/* lib_generic/crc32.c */
uint32_t crc32(uint32_t, const void*, unsigned int);
uint32_t crc32_no_comp(uint32_t, const void*, unsigned int);
+int file_crc(char *filename, ulong start, ulong size, ulong *crc,
+ ulong *total);
/* common/console.c */
int ctrlc (void);
diff --git a/scripts/Makefile b/scripts/Makefile
index 2f78c4b..55190f6 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -8,6 +8,7 @@ hostprogs-y += bin2c
hostprogs-y += mkimage
hostprogs-y += fix_size
hostprogs-y += bareboxenv
+hostprogs-y += bareboxcrc32
hostprogs-y += kernel-install
hostprogs-$(CONFIG_KALLSYMS) += kallsyms
hostprogs-$(CONFIG_ARCH_MVEBU) += kwbimage kwboot
@@ -25,6 +26,7 @@ subdir-$(CONFIG_X86) += setupmbr
subdir-$(CONFIG_DTC) += dtc
targetprogs-$(CONFIG_BAREBOXENV_TARGET) += bareboxenv-target
+targetprogs-$(CONFIG_BAREBOXCRC32_TARGET) += bareboxcrc32-target
targetprogs-$(CONFIG_KERNEL_INSTALL_TARGET) += kernel-install-target
# Let clean descend into subdirs
diff --git a/scripts/bareboxcrc32.c b/scripts/bareboxcrc32.c
new file mode 100644
index 0000000..e00ffaf
--- /dev/null
+++ b/scripts/bareboxcrc32.c
@@ -0,0 +1,60 @@
+/*
+ * bareboxcrc32.c - generate crc32 checksum in little endian
+ *
+ * Copyright (c) 2013 Michael Grzeschik <mgr at pengutronix.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <limits.h>
+#include <errno.h>
+#include <dirent.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+#include <libgen.h>
+
+#include "compiler.h"
+
+#define debug(...)
+
+#include "../crypto/crc32.c"
+
+int main(int argc, char *argv[])
+{
+ loff_t start = 0, size = ~0;
+ ulong crc = 0, total = 0;
+ char *filename = NULL;
+ int i;
+
+ if (!filename && argc < 2) {
+ printf("usage: %s filename\n", argv[0]);
+ exit(1);
+ }
+
+ for (i = 1; i < argc; i++) {
+ filename = argv[i];
+ if (file_crc(filename, start, size, &crc, &total) < 0)
+ exit(1);
+ printf("%08lx\t%s\n", crc, filename);
+ }
+
+ exit(0);
+
+}
diff --git a/scripts/bareboxenv.c b/scripts/bareboxenv.c
index f372685..da420db 100644
--- a/scripts/bareboxenv.c
+++ b/scripts/bareboxenv.c
@@ -35,25 +35,6 @@
#define debug(...)
-static void *xmalloc(size_t size)
-{
- void *p = NULL;
-
- if (!(p = malloc(size))) {
- printf("ERROR: out of memory\n");
- exit(1);
- }
-
- return p;
-}
-
-static void *xzalloc(size_t size)
-{
- void *p = xmalloc(size);
- memset(p, 0, size);
- return p;
-}
-
/* Find out if the last character of a string matches the one given.
* Don't underrun the buffer if the string length is 0.
*/
diff --git a/scripts/compiler.h b/scripts/compiler.h
index 53f84b6..0891c3b 100644
--- a/scripts/compiler.h
+++ b/scripts/compiler.h
@@ -107,4 +107,29 @@ typedef uint32_t __u32;
# define be64_to_cpu(x) (x)
#endif
+#define min(x, y) ({ \
+ typeof(x) _min1 = (x); \
+ typeof(y) _min2 = (y); \
+ (void) (&_min1 == &_min2); \
+ _min1 < _min2 ? _min1 : _min2; })
+
+inline void *xmalloc(size_t size)
+{
+ void *p = NULL;
+
+ if (!(p = malloc(size))) {
+ printf("ERROR: out of memory\n");
+ exit(1);
+ }
+
+ return p;
+}
+
+inline void *xzalloc(size_t size)
+{
+ void *p = xmalloc(size);
+ memset(p, 0, size);
+ return p;
+}
+
#endif
--
1.8.4.3
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