Add new NetBSD interceptors: devname(3), devname_r(3)

[krytarowski]

Summary

devname, devname_r - get device name

Sponsored by <The NetBSD Foundation>

[krytarowski]

• rebase to HEAD
• add tests

[vitalybuka]

test/sanitizer_common/TestCases/NetBSD/devname_r.cc

2

here and above
// RUN: %clangxx -O0 -g %s -o %t && %run %t 2>&1 | FileCheck

[krytarowski]

correct tests

[vitalybuka]

test/sanitizer_common/TestCases/NetBSD/devname_r.cc

2

FileCheck %s, I guess

[krytarowski]

test/sanitizer_common/TestCases/NetBSD/devname_r.cc

2

I will fix it!

[krytarowski]

test/sanitizer_common/TestCases/NetBSD/devname_r.cc

2

SVN r. 324121

lib/sanitizer_common/sanitizer_common_interceptors.inc

 }
 #define INIT_STRLCPY \
   COMMON_INTERCEPT_FUNCTION(strlcpy); \
   COMMON_INTERCEPT_FUNCTION(strlcat);
 #else
 #define INIT_STRLCPY
 #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
+#endif
+
 static void InitializeCommonInterceptors() {
   static u64 metadata_mem[sizeof(MetadataHashMap) / sizeof(u64) + 1];
   interceptor_metadata_map = new((void *)&metadata_mem) MetadataHashMap();
 
   INIT_TEXTDOMAIN;
   INIT_STRLEN;
   INIT_STRNLEN;
   INIT_STRNDUP;
static void InitializeCommonInterceptors() {
   INIT_ACCESS;
   INIT_FACCESSAT;
   INIT_GETGROUPLIST;
   INIT_READLINK;
   INIT_READLINKAT;
   INIT_NAME_TO_HANDLE_AT;
   INIT_OPEN_BY_HANDLE_AT;
   INIT_STRLCPY;
+  INIT_DEVNAME;
+  INIT_DEVNAME_R;
 
 #if SANITIZER_NETBSD
   COMMON_INTERCEPT_FUNCTION(__libc_mutex_lock);
   COMMON_INTERCEPT_FUNCTION(__libc_mutex_unlock);
   COMMON_INTERCEPT_FUNCTION(__libc_thr_setcancelstate);
 #endif
 
   INIT___PRINTF_CHK;
 }

lib/sanitizer_common/sanitizer_platform_interceptors.h

#if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \
     __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101000
 # define SI_MAC_DEPLOYMENT_BELOW_10_10 1
 #else
 # define SI_MAC_DEPLOYMENT_BELOW_10_10 0
 #endif
 #define SANITIZER_INTERCEPT_READLINKAT \
   (SI_POSIX && !SI_MAC_DEPLOYMENT_BELOW_10_10)
 
+#define SANITIZER_INTERCEPT_DEVNAME SI_NETBSD
+#define SANITIZER_INTERCEPT_DEVNAME_R SI_NETBSD
+
 #endif  // #ifndef SANITIZER_PLATFORM_INTERCEPTORS_H

test/sanitizer_common/TestCases/NetBSD/devname.cc

+// RUN: %clangxx -O0 -g %s -o %t && %run %t 2>&1 | FileCheck
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+
+int main(void) {
+  struct stat st;
+  char *name;
+
+  if (stat("/dev/null", &st))
+    exit(1);
+
+  if (!(name = devname(st.st_rdev, S_ISCHR(st.st_mode) ? S_IFCHR : S_IFBLK)))
+    exit(1);
+
+  printf("%s\n", name);
+
+  // CHECK: null
+
+  return 0;
+}

test/sanitizer_common/TestCases/NetBSD/devname_r.cc

+// RUN: %clangxx -O0 -g %s -o %t && %run %t 2>&1 | FileCheck
+
+#include <sys/cdefs.h>
+#include <sys/stat.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void) {
+  struct stat st;
+  char name[10];
+  mode_t type;
+
+  if (stat("/dev/null", &st))
+    exit(1);
+
+  type = S_ISCHR(st.st_mode) ? S_IFCHR : S_IFBLK;
+
+  if (devname_r(st.st_rdev, type, name, __arraycount(name)))
+    exit(1);
+
+  printf("%s\n", name);
+
+  // CHECK: null
+
+  return 0;
+}