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clamav/clamav-0.96-disable-jit.patch

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Index: clamav-0.96.1/clamd/clamd.c
===================================================================
--- clamav-0.96.1.orig/clamd/clamd.c
+++ clamav-0.96.1/clamd/clamd.c
@@ -434,6 +434,9 @@ int main(int argc, char **argv)
if((opt = optget(opts,"BytecodeTimeout"))->enabled) {
cl_engine_set_num(engine, CL_ENGINE_BYTECODE_TIMEOUT, opt->numarg);
}
+ if((opt = optget(opts,"BytecodeDisableJIT"))->enabled) {
+ cl_engine_set_num(engine, CL_ENGINE_BYTECODE_DISABLEJIT, opt->numarg);
+ }
if(optget(opts,"PhishingScanURLs")->enabled)
dboptions |= CL_DB_PHISHING_URLS;
Index: clamav-0.96.1/clamscan/manager.c
===================================================================
--- clamav-0.96.1.orig/clamscan/manager.c
+++ clamav-0.96.1/clamscan/manager.c
@@ -404,6 +404,8 @@ int scanmanager(const struct optstruct *
cl_engine_set_num(engine, CL_ENGINE_BYTECODE_SECURITY, CL_BYTECODE_TRUST_ALL);
if((opt = optget(opts,"bytecode-timeout"))->enabled)
cl_engine_set_num(engine, CL_ENGINE_BYTECODE_TIMEOUT, opt->numarg);
+ if((opt = optget(opts,"bytecode-disable-jit"))->enabled)
+ cl_engine_set_num(engine, CL_ENGINE_BYTECODE_DISABLEJIT, opt->numarg);
if((opt = optget(opts, "tempdir"))->enabled) {
if((ret = cl_engine_set_str(engine, CL_ENGINE_TMPDIR, opt->strarg))) {
Index: clamav-0.96.1/docs/man/clamd.conf.5.in
===================================================================
--- clamav-0.96.1.orig/docs/man/clamd.conf.5.in
+++ clamav-0.96.1/docs/man/clamd.conf.5.in
@@ -253,6 +253,12 @@ Default: TrustSigned
Set bytecode timeout in milliseconds.
.br
Default: 60000
+.TP
+\fBBytecodeDisableJIT BOOL\fR
+Disable the JIT and fallback to interpreter mode.
+WARNING: disabling the JIT affects performance!
+.br
+Default: No
.TP
\fBDetectPUA BOOL\fR
Detect Possibly Unwanted Applications.
Index: clamav-0.96.1/docs/man/clamscan.1.in
===================================================================
--- clamav-0.96.1.orig/docs/man/clamscan.1.in
+++ clamav-0.96.1/docs/man/clamscan.1.in
@@ -86,6 +86,10 @@ This option disables safety checks and m
.TP
\fB\-\-bytecode\-timeout=N\fR
Set bytecode timeout in milliseconds (default: 60000 = 60s)
+.TP
+\fB\-\-bytecode\-disable\-jit\fR
+Disable the JIT and fallback to interpreter mode.
+WARNING: disable the JIT affects performance!
.TP
\fB\-\-detect\-pua[=yes/no(*)]\fR
Detect Possibly Unwanted Applications.
Index: clamav-0.96.1/etc/clamd.conf
===================================================================
--- clamav-0.96.1.orig/etc/clamd.conf
+++ clamav-0.96.1/etc/clamd.conf
@@ -472,3 +472,8 @@ Example
#
# Default: 60000
# BytecodeTimeout 60000
+
+# Disable JIT and fallback to interpreter. WARNING: disabling JIT affects performance.
+#
+# Default: no
+#BytecodeDisableJIT no
Index: clamav-0.96.1/libclamav/clamav.h
===================================================================
--- clamav-0.96.1.orig/libclamav/clamav.h
+++ clamav-0.96.1/libclamav/clamav.h
@@ -144,7 +144,8 @@ enum cl_engine_field {
CL_ENGINE_TMPDIR, /* (char *) */
CL_ENGINE_KEEPTMP, /* uint32_t */
CL_ENGINE_BYTECODE_SECURITY, /* uint32_t */
- CL_ENGINE_BYTECODE_TIMEOUT /* uint32_t */
+ CL_ENGINE_BYTECODE_TIMEOUT, /* uint32_t */
+ CL_ENGINE_BYTECODE_DISABLEJIT /* uint32_t */
};
enum bytecode_security {
Index: clamav-0.96.1/libclamav/others.c
===================================================================
--- clamav-0.96.1.orig/libclamav/others.c
+++ clamav-0.96.1/libclamav/others.c
@@ -301,6 +301,7 @@ struct cl_engine *cl_engine_new(void)
new->bytecode_security = CL_BYTECODE_TRUST_SIGNED;
/* 5 seconds timeout */
new->bytecode_timeout = 60000;
+ new->disablejit = 0;
new->refcount = 1;
new->ac_only = 0;
new->ac_mindepth = CLI_DEFAULT_AC_MINDEPTH;
@@ -399,6 +400,9 @@ int cl_engine_set_num(struct cl_engine *
case CL_ENGINE_BYTECODE_TIMEOUT:
engine->bytecode_timeout = num;
break;
+ case CL_ENGINE_BYTECODE_DISABLEJIT:
+ engine->disablejit = num;
+ break;
default:
cli_errmsg("cl_engine_set_num: Incorrect field number\n");
return CL_EARG;
Index: clamav-0.96.1/libclamav/others.h
===================================================================
--- clamav-0.96.1.orig/libclamav/others.h
+++ clamav-0.96.1/libclamav/others.h
@@ -253,6 +253,7 @@ struct cl_engine {
unsigned hook_lsig_ids;
enum bytecode_security bytecode_security;
uint32_t bytecode_timeout;
+ unsigned disablejit;
};
struct cl_settings {
Index: clamav-0.96.1/libclamav/readdb.c
===================================================================
--- clamav-0.96.1.orig/libclamav/readdb.c
+++ clamav-0.96.1/libclamav/readdb.c
@@ -2595,7 +2595,10 @@ int cl_load(const char *path, struct cl_
return ret;
if((dboptions & CL_DB_BYTECODE) && !engine->bcs.engine && (engine->dconf->bytecode & BYTECODE_ENGINE_MASK)) {
- if((ret = cli_bytecode_init(&engine->bcs, engine->dconf->bytecode)))
+ unsigned dconfmask = engine->dconf->bytecode;
+ if (engine->disablejit)
+ dconfmask &= BYTECODE_INTERPRETER;
+ if((ret = cli_bytecode_init(&engine->bcs, dconfmask)))
return ret;
} else {
cli_dbgmsg("Bytecode engine disabled\n");
Index: clamav-0.96.1/shared/optparser.c
===================================================================
--- clamav-0.96.1.orig/shared/optparser.c
+++ clamav-0.96.1/shared/optparser.c
@@ -252,6 +252,9 @@ const struct clam_option __clam_options[
"Set bytecode security level.\nPossible values:\n\tNone - no security at all, meant for debugging. DO NOT USE THIS ON PRODUCTION SYSTEMS\n\tTrustSigned - trust bytecode loaded from signed .c[lv]d files,\n\t\t insert runtime safety checks for bytecode loaded from other sources\n\tParanoid - don't trust any bytecode, insert runtime checks for all\nRecommended: TrustSigned, because bytecode in .cvd files already has these checks\n","TrustSigned"},
{ "BytecodeTimeout", "bytecode-timeout", 0, TYPE_NUMBER, MATCH_NUMBER, 60000, NULL, 0, OPT_CLAMD | OPT_CLAMSCAN,
"Set bytecode timeout in miliseconds.\n","60000"},
+ { "BytecodeDisableJIT", "bytecode-disable-jit", 0, TYPE_BOOL, MATCH_BOOL, 0, NULL, 0, OPT_CLAMD | OPT_CLAMSCAN,
+ "Disable JIT and fallback to interpreter. WARNING: disabling JIT affects performance.\n","no"},
+
{ "DetectPUA", "detect-pua", 0, TYPE_BOOL, MATCH_BOOL, 0, NULL, 0, OPT_CLAMD | OPT_CLAMSCAN, "Detect Potentially Unwanted Applications.", "yes" },
{ "ExcludePUA", "exclude-pua", 0, TYPE_STRING, NULL, -1, NULL, FLAG_MULTIPLE, OPT_CLAMD | OPT_CLAMSCAN, "Exclude a specific PUA category. This directive can be used multiple times.\nSee http://www.clamav.net/support/pua for the complete list of PUA\ncategories.", "NetTool\nPWTool" },
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