[PATCH] D24375: [sanitizer] Add interceptor for ttyname_r

[Keno Fischer via llvm-commits]

loladiro created this revision.
loladiro added a reviewer: eugenis.
loladiro added a subscriber: llvm-commits.
loladiro set the repository for this revision to rL LLVM.
Herald added a subscriber: kubabrecka.

Repository:
  rL LLVM

https://reviews.llvm.org/D24375

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
@@ -235,6 +235,7 @@
 #define SANITIZER_INTERCEPT_PTHREAD_BARRIERATTR_GETPSHARED SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_TMPNAM SI_NOT_WINDOWS
 #define SANITIZER_INTERCEPT_TMPNAM_R SI_LINUX_NOT_ANDROID
+#define SANITIZER_INTERCEPT_TTYNAME_R SI_NOT_WINDOWS
 #define SANITIZER_INTERCEPT_TEMPNAM SI_NOT_WINDOWS
 #define SANITIZER_INTERCEPT_SINCOS SI_LINUX
 #define SANITIZER_INTERCEPT_REMQUO SI_NOT_WINDOWS
Index: lib/sanitizer_common/sanitizer_common_interceptors.inc
===================================================================
--- lib/sanitizer_common/sanitizer_common_interceptors.inc
+++ lib/sanitizer_common/sanitizer_common_interceptors.inc
@@ -4183,6 +4183,19 @@
 #define INIT_TMPNAM_R
 #endif
 
+#if SANITIZER_INTERCEPT_TTYNAME_R
+INTERCEPTOR(int, ttyname_r, int fd, char *name, SIZE_T namesize) {
+  void *ctx;
+  COMMON_INTERCEPTOR_ENTER(ctx, ttyname_r, fd, name, namesize);
+  int res = REAL(ttyname_r)(fd, name, namesize);
+  if (res == 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, REAL(strlen)(name) + 1);
+  return res;
+}
+#define INIT_TTYNAME_R COMMON_INTERCEPT_FUNCTION(ttyname_r);
+#else
+#define INIT_TTYNAME_R
+#endif
+
 #if SANITIZER_INTERCEPT_TEMPNAM
 INTERCEPTOR(char *, tempnam, char *dir, char *pfx) {
   void *ctx;
@@ -6008,6 +6021,7 @@
   INIT_PTHREAD_BARRIERATTR_GETPSHARED;
   INIT_TMPNAM;
   INIT_TMPNAM_R;
+  INIT_TTYNAME_R;
   INIT_TEMPNAM;
   INIT_PTHREAD_SETNAME_NP;
   INIT_SINCOS;


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