* [PATCH 1/1 V2] command: crc: add -V option to check the crc store in a file
@ 2013-09-19 12:47 Jean-Christophe PLAGNIOL-VILLARD
2013-09-20 6:34 ` Sascha Hauer
0 siblings, 1 reply; 2+ messages in thread
From: Jean-Christophe PLAGNIOL-VILLARD @ 2013-09-19 12:47 UTC (permalink / raw)
To: barebox
the format is %08x
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
v2:
improve help description
Best Regards,
J.
commands/crc.c | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/commands/crc.c b/commands/crc.c
index a0071b0..ee8dacf 100644
--- a/commands/crc.c
+++ b/commands/crc.c
@@ -82,6 +82,19 @@ out:
return ret;
}
+static int crc_from_file(const char* file, ulong *crc)
+{
+ char * buf;
+
+ buf= read_file(file, NULL);
+
+ if (!buf)
+ return -ENOMEM;
+
+ *crc = simple_strtoul(buf, NULL, 16);
+ return 0;
+}
+
static int do_crc(int argc, char *argv[])
{
loff_t start = 0, size = ~0;
@@ -92,7 +105,7 @@ static int do_crc(int argc, char *argv[])
#endif
int opt, err = 0, filegiven = 0, verify = 0;
- while((opt = getopt(argc, argv, "f:F:v:")) > 0) {
+ while((opt = getopt(argc, argv, "f:F:v:V:")) > 0) {
switch(opt) {
case 'f':
filename = optarg;
@@ -108,6 +121,10 @@ static int do_crc(int argc, char *argv[])
verify = 1;
vcrc = simple_strtoul(optarg, NULL, 0);
break;
+ case 'V':
+ if (!crc_from_file(optarg, &vcrc))
+ verify = 1;
+ break;
default:
return COMMAND_ERROR_USAGE;
}
@@ -153,6 +170,7 @@ BAREBOX_CMD_HELP_OPT ("-f <file>", "Use file instead of memory.\n")
BAREBOX_CMD_HELP_OPT ("-F <file>", "Use file to compare.\n")
#endif
BAREBOX_CMD_HELP_OPT ("-v <crc>", "Verify\n")
+BAREBOX_CMD_HELP_OPT ("-V <file>", "Verify with crc read from <file>\n")
BAREBOX_CMD_HELP_END
BAREBOX_CMD_START(crc32)
--
1.8.4.rc1
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2013-09-19 12:47 [PATCH 1/1 V2] command: crc: add -V option to check the crc store in a file Jean-Christophe PLAGNIOL-VILLARD
2013-09-20 6:34 ` Sascha Hauer
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