[PATCH] D42066: Add new interceptor: acct(2)

[Kamil Rytarowski via Phabricator via llvm-commits]

krytarowski created this revision.
krytarowski added reviewers: joerg, vitalybuka.
krytarowski added a project: Sanitizers.
Herald added a subscriber: kubamracek.

  ACCT(2)                       System Calls Manual                      ACCT(2)
  
  NAME
       acct - enable or disable process accounting
  
  LIBRARY
       Standard C Library (libc, -lc)
  
  SYNOPSIS
       #include <unistd.h>
  
       int
       acct(const char *file);

Sponsored by <The NetBSD Foundation>


Repository:
  rL LLVM

https://reviews.llvm.org/D42066

Files:
  lib/sanitizer_common/sanitizer_common_interceptors.inc
  lib/sanitizer_common/sanitizer_platform_interceptors.h


Index: lib/sanitizer_common/sanitizer_platform_interceptors.h
===================================================================
--- lib/sanitizer_common/sanitizer_platform_interceptors.h
+++ lib/sanitizer_common/sanitizer_platform_interceptors.h
@@ -432,4 +432,6 @@
 #define SANITIZER_INTERCEPT_SIGNAL_AND_SIGACTION (!SI_WINDOWS && SI_NOT_FUCHSIA)
 #define SANITIZER_INTERCEPT_BSD_SIGNAL SI_ANDROID
 
+#define SANITIZER_INTERCEPT_ACCT SI_NETBSD
+
 #endif  // #ifndef SANITIZER_PLATFORM_INTERCEPTORS_H
Index: lib/sanitizer_common/sanitizer_common_interceptors.inc
===================================================================
--- lib/sanitizer_common/sanitizer_common_interceptors.inc
+++ lib/sanitizer_common/sanitizer_common_interceptors.inc
@@ -6463,6 +6463,20 @@
 #define INIT_WCSCAT
 #endif
 
+#if SANITIZER_INTERCEPT_ACCT
+INTERCEPTOR(int, acct, char *file) {
+  void *ctx;
+  COMMON_INTERCEPTOR_ENTER(ctx, acct, file);
+  if (file) {
+    COMMON_INTERCEPTOR_READ_RANGE(ctx, file, REAL(strlen)(file) + 1);
+  }
+  return REAL(acct)(file);
+}
+#define INIT_ACCT COMMON_INTERCEPT_FUNCTION(acct)
+#else
+#define INIT_ACCT
+#endif
+
 static void InitializeCommonInterceptors() {
   static u64 metadata_mem[sizeof(MetadataHashMap) / sizeof(u64) + 1];
   interceptor_metadata_map = new((void *)&metadata_mem) MetadataHashMap();
@@ -6674,6 +6688,7 @@
   INIT_GETLOADAVG;
   INIT_WCSLEN;
   INIT_WCSCAT;
+  INIT_ACCT;
 
 #if SANITIZER_NETBSD
   COMMON_INTERCEPT_FUNCTION(__libc_mutex_lock);


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