[PATCH] D42053: Add new NetBSD interceptors: devname(3), devname_r(3)

[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.

name=1
       devname, devname_r - get device name
  
  LIBRARY
       Standard C Library (libc, -lc)
  
  SYNOPSIS
       #include <stdlib.h>
       #include <sys/stat.h>
  
       char *
       devname(dev_t dev, mode_t type);
  
       int
       devname_r(dev_t dev, mode_t type, char *path, size_t len);

Sponsored by <The NetBSD Foundation>


Repository:
  rL LLVM

https://reviews.llvm.org/D42053

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 +432,7 @@
 #define SANITIZER_INTERCEPT_SIGNAL_AND_SIGACTION (!SI_WINDOWS && SI_NOT_FUCHSIA)
 #define SANITIZER_INTERCEPT_BSD_SIGNAL SI_ANDROID
 
+#define SANITIZER_INTERCEPT_DEVNAME SI_NETBSD
+#define SANITIZER_INTERCEPT_DEVNAME_R 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 +6463,35 @@
 #define INIT_WCSCAT
 #endif
 
+#if SANITIZER_INTERCEPT_DEVNAME
+INTERCEPTOR(char *, devname, u64 dev, u32 type) {
+  void *ctx;
+  char *name;
+  COMMON_INTERCEPTOR_ENTER(ctx, devname, dev, type);
+  name = REAL(devname)(dev, type);
+  if (name)
+    COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, REAL(strlen)(name) + 1);
+  return name;
+}
+#define INIT_DEVNAME COMMON_INTERCEPT_FUNCTION(devname);
+#else
+#define INIT_DEVNAME
+#endif
+
+#if SANITIZER_INTERCEPT_DEVNAME_R
+INTERCEPTOR(int, devname_r, u64 dev, u32 type, char *path, uptr len) {
+  void *ctx;
+  int res;
+  COMMON_INTERCEPTOR_ENTER(ctx, devname_r, dev, type, path, len);
+  res = REAL(devname_r)(dev, type, path, len);
+  if (!res)
+    COMMON_INTERCEPTOR_WRITE_RANGE(ctx, path, REAL(strlen)(path) + 1);
+  return res;
+}
+#define INIT_DEVNAME_R COMMON_INTERCEPT_FUNCTION(devname_r);
+#else
+#define INIT_DEVNAME_R
+
 static void InitializeCommonInterceptors() {
   static u64 metadata_mem[sizeof(MetadataHashMap) / sizeof(u64) + 1];
   interceptor_metadata_map = new((void *)&metadata_mem) MetadataHashMap();
@@ -6674,6 +6703,8 @@
   INIT_GETLOADAVG;
   INIT_WCSLEN;
   INIT_WCSCAT;
+  INIT_DEVNAME;
+  INIT_DEVNAME_R;
 
 #if SANITIZER_NETBSD
   COMMON_INTERCEPT_FUNCTION(__libc_mutex_lock);


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