[xen staging] vtpmmgr: Fix owner_auth & srk_auth parsing

[patchbot@xxxxxxx]

commit c8d8a1e2e6a1fdba45dd9e9fb993d79d1e5a097c
Author:     Jason Andryuk <jandryuk@xxxxxxxxx>
AuthorDate: Thu May 6 09:59:21 2021 -0400
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Mon May 10 14:50:33 2021 +0100

    vtpmmgr: Fix owner_auth & srk_auth parsing
    
    Argument parsing only matches to before ':' and then the string with
    leading ':' is passed to parse_auth_string which fails to parse.  Extend
    the length to include the seperator in the match.
    
    While here, switch the seperator to "=".  The man page documented "="
    and the other tpm.* arguments already use "=".  Since it didn't work
    before, we don't need to worry about backwards compatibility.
    
    Signed-off-by: Jason Andryuk <jandryuk@xxxxxxxxx>
    Reviewed-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
    Reviewed-by: Daniel P. Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx>
---
 stubdom/vtpmmgr/init.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/stubdom/vtpmmgr/init.c b/stubdom/vtpmmgr/init.c
index 4ae34a4fcb..62dc5994de 100644
--- a/stubdom/vtpmmgr/init.c
+++ b/stubdom/vtpmmgr/init.c
@@ -289,16 +289,16 @@ int parse_cmdline_opts(int argc, char** argv, struct 
Opts* opts)
    memcpy(vtpm_globals.srk_auth, WELLKNOWN_AUTH, sizeof(TPM_AUTHDATA));
 
    for(i = 1; i < argc; ++i) {
-      if(!strncmp(argv[i], "owner_auth:", 10)) {
-         if((rc = parse_auth_string(argv[i] + 10, vtpm_globals.owner_auth)) < 
0) {
+      if(!strncmp(argv[i], "owner_auth=", 11)) {
+         if((rc = parse_auth_string(argv[i] + 11, vtpm_globals.owner_auth)) < 
0) {
             goto err_invalid;
          }
          if(rc == 1) {
             opts->gen_owner_auth = 1;
          }
       }
-      else if(!strncmp(argv[i], "srk_auth:", 8)) {
-         if((rc = parse_auth_string(argv[i] + 8, vtpm_globals.srk_auth)) != 0) 
{
+      else if(!strncmp(argv[i], "srk_auth=", 9)) {
+         if((rc = parse_auth_string(argv[i] + 9, vtpm_globals.srk_auth)) != 0) 
{
             goto err_invalid;
          }
       }
--
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