[Nginx] fixing startup crashes (#4425)

* fixing startup crashes

* Removed whitespaces

projects/nginx/build.sh

@@ -24,7 +24,7 @@ rm -rf genfiles && mkdir genfiles && $SRC/LPM/external.protobuf/bin/protoc http_
 cd ../..
 
 auto/configure \
-    --with-ld-opt="-Wl,--wrap=listen -Wl,--wrap=setsockopt -Wl,--wrap=bind -Wl,--wrap=shutdown -Wl,--wrap=connect -Wl,--wrap=getpwnam -Wl,--wrap=getgrnam" \
+    --with-ld-opt="-Wl,--wrap=listen -Wl,--wrap=setsockopt -Wl,--wrap=bind -Wl,--wrap=shutdown -Wl,--wrap=connect -Wl,--wrap=getpwnam -Wl,--wrap=getgrnam -Wl,--wrap=chmod -Wl,--wrap=chown" \
     --with-http_v2_module
 make -f objs/Makefile fuzzers
 

projects/nginx/fuzz/http_request_fuzzer.cc

@@ -30,7 +30,6 @@ extern "C" {
 #include "libprotobuf-mutator/src/libfuzzer/libfuzzer_macro.h"
 
 static char configuration[] =
-"user root;\n"
 "error_log stderr emerg;\n"
 "events {\n"
 "    use epoll;\n"

projects/nginx/fuzz/wrappers.c

@@ -15,6 +15,7 @@
 ////////////////////////////////////////////////////////////////////////////////
 #include <sys/socket.h>
 #include <sys/types.h>
+#include <sys/stat.h>
 #include <grp.h>
 #include <pwd.h>
 
@@ -35,6 +36,14 @@ int __wrap_setsockopt(int fd, int level, int optname, const void *optval,
   return 0;
 }
 
+int __wrap_chmod(const char *pathname, mode_t mode){
+  return 0;
+}
+
+int __wrap_chown(const char *pathname, uid_t owner, gid_t group){
+  return 0;
+}
+
 struct passwd *__wrap_getpwnam(const char *name){
   struct passwd *pwd = (struct passwd *) calloc(1, sizeof(struct passwd));
   pwd->pw_uid = 1;