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cmd: hash: fix param count check

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Add correct check for parameter count.

This fixes this issue when `hash` cmd is invoked without params:

=> hash
data abort
pc : [<bf739204>]	   lr : [<ba6effa8>]
reloc pc : [<60019204>]	   lr : [<5afcffa8>]
sp : ba6dd9c8  ip : bf7391f0	 fp : bf74ec14
r10: 00000001  r9 : ba6dfea0	 r8 : bf7ea030
r7 : 00000000  r6 : ba6effa8	 r5 : 00000000  r4 : ffffffff
r3 : bf7c257c  r2 : 00000001	 r1 : 00000000  r0 : bf7e6e34
Flags: nZCv  IRQs off  FIQs on  Mode SVC_32
Code: e5934004 e1a0e003 e59f3050 e2444001 (e5f4c001)
Resetting CPU ...

resetting ...

Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
This commit is contained in:
Igor Opaniuk 2024-02-07 01:01:32 +01:00 • committed by Tom Rini
parent ef473d541d
commit 348ea87850
1 changed files with 10 additions and 9 deletions
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19
cmd/hash.c
View file

@ -14,15 +14,22 @@
#include <hash.h>
#include <linux/ctype.h>
#if IS_ENABLED(CONFIG_HASH_VERIFY)
#define HARGS 6
#else
#define HARGS 5
#endif
static int do_hash(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
char *s;
int flags = HASH_FLAG_ENV;
#ifdef CONFIG_HASH_VERIFY
if (argc < 4)
if (argc < (HARGS - 1))
return CMD_RET_USAGE;
#if IS_ENABLED(CONFIG_HASH_VERIFY)
if (!strcmp(argv[1], "-v")) {
flags |= HASH_FLAG_VERIFY;
argc--;
@ -37,18 +44,12 @@ static int do_hash(struct cmd_tbl *cmdtp, int flag, int argc,
return hash_command(*argv, flags, cmdtp, flag, argc - 1, argv + 1);
}
#ifdef CONFIG_HASH_VERIFY
#define HARGS 6
#else
#define HARGS 5
#endif
U_BOOT_CMD(
hash, HARGS, 1, do_hash,
"compute hash message digest",
"algorithm address count [[*]hash_dest]\n"
" - compute message digest [save to env var / *address]"
#ifdef CONFIG_HASH_VERIFY
#if IS_ENABLED(CONFIG_HASH_VERIFY)
"\nhash -v algorithm address count [*]hash\n"
" - verify message digest of memory area to immediate value, \n"
" env var or *address"