[Sanitizer] Move ReadFileToBuffer to sanitizer_common.

llvm-svn: 158138

2 files changed, 0 insertions, 38 deletions

diff --git a/compiler-rt/lib/asan/asan_internal.h b/compiler-rt/lib/asan/asan_internal.h
index c832d30023d..9dad2130919 100644
--- a/compiler-rt/lib/asan/asan_internal.h
+++ b/compiler-rt/lib/asan/asan_internal.h
@@ -146,13 +146,6 @@ void AsanTSDInit(void (*destructor)(void *tsd));
 void *AsanTSDGet();
 void AsanTSDSet(void *tsd);
 
-// Opens the file 'file_name" and reads up to 'max_len' bytes.
-// The resulting buffer is mmaped and stored in '*buff'.
-// The size of the mmaped region is stored in '*buff_size',
-// Returns the number of read bytes or 0 if file can not be opened.
-uptr ReadFileToBuffer(const char *file_name, char **buff,
-                        uptr *buff_size, uptr max_len);
-
 void AppendToErrorMessageBuffer(const char *buffer);
 // asan_printf.cc
 void AsanPrintf(const char *format, ...);
diff --git a/compiler-rt/lib/asan/asan_rtl.cc b/compiler-rt/lib/asan/asan_rtl.cc
index df5c1fe3650..96078ebd3fd 100644
--- a/compiler-rt/lib/asan/asan_rtl.cc
+++ b/compiler-rt/lib/asan/asan_rtl.cc
@@ -109,37 +109,6 @@ static void PrintBytes(const char *before, uptr *a) {
   AsanPrintf("\n");
 }
 
-uptr ReadFileToBuffer(const char *file_name, char **buff,
-                         uptr *buff_size, uptr max_len) {
-  const uptr kMinFileLen = kPageSize;
-  uptr read_len = 0;
-  *buff = 0;
-  *buff_size = 0;
-  // The files we usually open are not seekable, so try different buffer sizes.
-  for (uptr size = kMinFileLen; size <= max_len; size *= 2) {
-    fd_t fd = internal_open(file_name, /*write*/ false);
-    if (fd < 0) return 0;
-    UnmapOrDie(*buff, *buff_size);
-    *buff = (char*)MmapOrDie(size, __FUNCTION__);
-    *buff_size = size;
-    // Read up to one page at a time.
-    read_len = 0;
-    bool reached_eof = false;
-    while (read_len + kPageSize <= size) {
-      uptr just_read = internal_read(fd, *buff + read_len, kPageSize);
-      if (just_read == 0) {
-        reached_eof = true;
-        break;
-      }
-      read_len += just_read;
-    }
-    internal_close(fd);
-    if (reached_eof)  // We've read the whole file.
-      break;
-  }
-  return read_len;
-}
-
 void AppendToErrorMessageBuffer(const char *buffer) {
   if (error_message_buffer) {
     uptr length = (uptr)internal_strlen(buffer);