[Sanitizer] Enable pututxline interception

[devnexen]

Did not update the unit tests purposely. Most likely one of the last interceptions before the branching next week.

[krytarowski]

lib/sanitizer_common/sanitizer_common_interceptors.inc

6577 ↗

(On Diff #180849)

shouldn't we use WRITE_RANGE?

[devnexen]

lib/sanitizer_common/sanitizer_common_interceptors.inc

6577 ↗

(On Diff #180849)

Yes indeed.

compiler-rt/trunk/lib/sanitizer_common/sanitizer_common_interceptors.inc

 #define getpwnam __getpwnam50
 #define getpwnam_r __getpwnam_r50
 #define getpwuid __getpwuid50
 #define getpwuid_r __getpwuid_r50
 #define getutent __getutent50
 #define getutxent __getutxent50
 #define getutxid __getutxid50
 #define getutxline __getutxline50
+#define pututxline __pututxline50
 #define glob __glob30
 #define gmtime __gmtime50
 #define gmtime_r __gmtime_r50
 #define localtime __locatime50
 #define localtime_r __localtime_r50
 #define mktime __mktime50
 #define lstat __lstat50
 #define opendir __opendir30

 INTERCEPTOR(void *, getutxline, void *ut) {
   void *ctx;
   COMMON_INTERCEPTOR_ENTER(ctx, getutxline, ut);
   void *res = REAL(getutxline)(ut);
   if (res)
     COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz);
   return res;
 }
+INTERCEPTOR(void *, pututxline, const void *ut) {
+  void *ctx;
+  COMMON_INTERCEPTOR_ENTER(ctx, pututxline, ut);
+  if (ut)
+    COMMON_INTERCEPTOR_READ_RANGE(ctx, ut, __sanitizer::struct_utmpx_sz);
+  void *res = REAL(pututxline)(ut);
+  if (res)
+    COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer::struct_utmpx_sz);
+  return res;
+}
 #define INIT_UTMPX                      \
   COMMON_INTERCEPT_FUNCTION(getutxent); \
   COMMON_INTERCEPT_FUNCTION(getutxid);  \
-  COMMON_INTERCEPT_FUNCTION(getutxline);
+  COMMON_INTERCEPT_FUNCTION(getutxline); \
+  COMMON_INTERCEPT_FUNCTION(pututxline);
 #else
 #define INIT_UTMPX
 #endif
 
 #if SANITIZER_INTERCEPT_GETLOADAVG
 INTERCEPTOR(int, getloadavg, double *loadavg, int nelem) {
   void *ctx;
   COMMON_INTERCEPTOR_ENTER(ctx, getloadavg, loadavg, nelem);