[Crash-utility] [PATCH] Extend the SIAL built-in functions to include memset function.

[Aravinda Prasad]

The memset function will be used to specify the virtual address
and the length of the data to be scrubbed in the dump file when
the SIAL macro is used with the makedumpfile command. The
makedumpfile command is currently being enhanced to accept SIAL
macros to scrub data in the dump file.

When used with crash, SIAL macro using memset function will
have no effect (as intended as dump file should not be modified).
This is because the API_PUTMEM call back function implemented
in crash extension layer is a no-op.

Signed-off-by: Aravinda Prasad <aravinda at linux.vnet.ibm.com>
---
 extensions/libsial/sial_builtin.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/extensions/libsial/sial_builtin.c b/extensions/libsial/sial_builtin.c
index e189f5e..05228a4 100644
--- a/extensions/libsial/sial_builtin.c
+++ b/extensions/libsial/sial_builtin.c
@@ -192,6 +192,18 @@ char p[1024];
 	return sial_setstrval(sial_newval(), p);
 }
 
+value_t *
+sial_memset(value_t* vaddr, value_t* vch, value_t* vlen)
+{
+ull addr=sial_getval(vaddr);
+int len=sial_getval(vlen);
+ull ch=sial_getval(vch);
+
+	API_PUTMEM(addr, (void *)ch, len);
+	return sial_makebtype(1);
+}
+
+
 static builtin *bfuncs=0;
 
 /*
@@ -334,6 +346,7 @@ static btspec_t sialbfuncs[] = {
 	{ "void prarr(string name, int i)",     bcast(sial_prarr)},
 	{ "int member(void*, string name)",     bcast(sial_ismember)},
 	{ "string findsym(string)",		bcast(sial_findsym)},
+	{ "int memset(char*, int, int)",	bcast(sial_memset)},
 };