Merge "Add fileno_unlocked to support thread sanitizer."

libc/include/stdio.h

@@ -270,6 +270,7 @@ int	 vasprintf(char ** __restrict, const char * __restrict,
 void clearerr_unlocked(FILE*);
 int feof_unlocked(FILE*);
 int ferror_unlocked(FILE*);
+int fileno_unlocked(FILE*);
 
 /*
  * Stdio function-access interface.

libc/libc.arm.map

@@ -1310,6 +1310,7 @@ LIBC_N {
     __pwrite_chk;
     __pwrite64_chk;
     __write_chk;
+    fileno_unlocked;
     getgrgid_r;
     getgrnam_r;
     preadv;

libc/libc.arm64.map

@@ -1156,6 +1156,7 @@ LIBC_N {
     __pwrite_chk;
     __pwrite64_chk;
     __write_chk;
+    fileno_unlocked;
     getgrgid_r;
     getgrnam_r;
     preadv;

libc/libc.map.txt

@@ -1337,6 +1337,7 @@ LIBC_N {
     __pwrite_chk;
     __pwrite64_chk;
     __write_chk;
+    fileno_unlocked;
     getgrgid_r;
     getgrnam_r;
     preadv;

libc/libc.mips.map

@@ -1273,6 +1273,7 @@ LIBC_N {
     __pwrite_chk;
     __pwrite64_chk;
     __write_chk;
+    fileno_unlocked;
     getgrgid_r;
     getgrnam_r;
     preadv;

libc/libc.mips64.map

@@ -1156,6 +1156,7 @@ LIBC_N {
     __pwrite_chk;
     __pwrite64_chk;
     __write_chk;
+    fileno_unlocked;
     getgrgid_r;
     getgrnam_r;
     preadv;

libc/libc.x86.map

@@ -1271,6 +1271,7 @@ LIBC_N {
     __pwrite_chk;
     __pwrite64_chk;
     __write_chk;
+    fileno_unlocked;
     getgrgid_r;
     getgrnam_r;
     preadv;

libc/libc.x86_64.map

@@ -1156,6 +1156,7 @@ LIBC_N {
     __pwrite_chk;
     __pwrite64_chk;
     __write_chk;
+    fileno_unlocked;
     getgrgid_r;
     getgrnam_r;
     preadv;

libc/stdio/stdio_ext.cpp

@@ -99,3 +99,7 @@ int feof_unlocked(FILE* fp) {
 int ferror_unlocked(FILE* fp) {
   return __sferror(fp);
 }
+
+int fileno_unlocked(FILE* fp) {
+  return __sfileno(fp);
+}