diff --git a/CPPLINT.cfg b/CPPLINT.cfg
new file mode 100644
index 0000000..560d791
--- /dev/null
+++ b/CPPLINT.cfg
@@ -0,0 +1,2 @@
+set noparent
+filter=-build/header_guard,-runtime/int,-readability/function
diff --git a/libc/Android.mk b/libc/Android.mk
index 691017a..fe7b116 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -69,6 +69,7 @@
     bionic/__FD_chk.cpp \
     bionic/__fgets_chk.cpp \
     bionic/__memmove_chk.cpp \
+    bionic/__poll_chk.cpp \
     bionic/__read_chk.cpp \
     bionic/__recvfrom_chk.cpp \
     bionic/__stpcpy_chk.cpp \
@@ -115,6 +116,8 @@
     bionic/error.cpp \
     bionic/eventfd_read.cpp \
     bionic/eventfd_write.cpp \
+    bionic/fchmod.cpp \
+    bionic/fchmodat.cpp \
     bionic/ffs.cpp \
     bionic/flockfile.cpp \
     bionic/fork.cpp \
diff --git a/libc/SYSCALLS.TXT b/libc/SYSCALLS.TXT
index 0fa2a1e..d68a00f 100644
--- a/libc/SYSCALLS.TXT
+++ b/libc/SYSCALLS.TXT
@@ -113,7 +113,7 @@
 int         __fcntl64:fcntl64(int, int, void*)  arm,mips,x86
 int         fcntl(int, int, void*)  arm64,mips64,x86_64
 int         flock(int, int)   all
-int         fchmod(int, mode_t)  all
+int         __fchmod:fchmod(int, mode_t)  all
 int         dup(int)  all
 int         pipe2(int*, int) all
 int         dup3(int, int, int)   all
@@ -131,7 +131,7 @@
 
 int __openat:openat(int, const char*, int, mode_t) all
 int faccessat(int, const char*, int, int)  all
-int fchmodat(int, const char*, mode_t, int)  all
+int __fchmodat:fchmodat(int, const char*, mode_t)  all
 int fchownat(int, const char*, uid_t, gid_t, int)  all
 int fstatat64|fstatat:fstatat64(int, const char*, struct stat*, int)   arm,mips,x86
 int fstatat64|fstatat:newfstatat(int, const char*, struct stat*, int)  arm64,x86_64
diff --git a/libc/arch-arm/syscalls/fchmod.S b/libc/arch-arm/syscalls/__fchmod.S
similarity index 89%
rename from libc/arch-arm/syscalls/fchmod.S
rename to libc/arch-arm/syscalls/__fchmod.S
index 5675f0a..ff888a1 100644
--- a/libc/arch-arm/syscalls/fchmod.S
+++ b/libc/arch-arm/syscalls/__fchmod.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmod)
+ENTRY(__fchmod)
     mov     ip, r7
     ldr     r7, =__NR_fchmod
     swi     #0
@@ -11,4 +11,4 @@
     bxls    lr
     neg     r0, r0
     b       __set_errno_internal
-END(fchmod)
+END(__fchmod)
diff --git a/libc/arch-arm/syscalls/fchmodat.S b/libc/arch-arm/syscalls/__fchmodat.S
similarity index 88%
rename from libc/arch-arm/syscalls/fchmodat.S
rename to libc/arch-arm/syscalls/__fchmodat.S
index 3f7e0ee..4d10f00 100644
--- a/libc/arch-arm/syscalls/fchmodat.S
+++ b/libc/arch-arm/syscalls/__fchmodat.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmodat)
+ENTRY(__fchmodat)
     mov     ip, r7
     ldr     r7, =__NR_fchmodat
     swi     #0
@@ -11,4 +11,4 @@
     bxls    lr
     neg     r0, r0
     b       __set_errno_internal
-END(fchmodat)
+END(__fchmodat)
diff --git a/libc/arch-arm64/syscalls/fchmod.S b/libc/arch-arm64/syscalls/__fchmod.S
similarity index 82%
rename from libc/arch-arm64/syscalls/fchmod.S
rename to libc/arch-arm64/syscalls/__fchmod.S
index 83a8060..05c67fc 100644
--- a/libc/arch-arm64/syscalls/fchmod.S
+++ b/libc/arch-arm64/syscalls/__fchmod.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmod)
+ENTRY(__fchmod)
     mov     x8, __NR_fchmod
     svc     #0
 
@@ -11,4 +11,5 @@
     b.hi    __set_errno_internal
 
     ret
-END(fchmod)
+END(__fchmod)
+.hidden __fchmod
diff --git a/libc/arch-arm64/syscalls/fchmodat.S b/libc/arch-arm64/syscalls/__fchmodat.S
similarity index 81%
rename from libc/arch-arm64/syscalls/fchmodat.S
rename to libc/arch-arm64/syscalls/__fchmodat.S
index 8c5bb0e..2406ea8 100644
--- a/libc/arch-arm64/syscalls/fchmodat.S
+++ b/libc/arch-arm64/syscalls/__fchmodat.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmodat)
+ENTRY(__fchmodat)
     mov     x8, __NR_fchmodat
     svc     #0
 
@@ -11,4 +11,5 @@
     b.hi    __set_errno_internal
 
     ret
-END(fchmodat)
+END(__fchmodat)
+.hidden __fchmodat
diff --git a/libc/arch-mips/syscalls/fchmod.S b/libc/arch-mips/syscalls/__fchmod.S
similarity index 89%
rename from libc/arch-mips/syscalls/fchmod.S
rename to libc/arch-mips/syscalls/__fchmod.S
index 2a95cc3..9bc491c 100644
--- a/libc/arch-mips/syscalls/fchmod.S
+++ b/libc/arch-mips/syscalls/__fchmod.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmod)
+ENTRY(__fchmod)
     .set noreorder
     .cpload t9
     li v0, __NR_fchmod
@@ -16,4 +16,4 @@
     j t9
     nop
     .set reorder
-END(fchmod)
+END(__fchmod)
diff --git a/libc/arch-mips/syscalls/fchmodat.S b/libc/arch-mips/syscalls/__fchmodat.S
similarity index 88%
rename from libc/arch-mips/syscalls/fchmodat.S
rename to libc/arch-mips/syscalls/__fchmodat.S
index d9de036..07ea8f8 100644
--- a/libc/arch-mips/syscalls/fchmodat.S
+++ b/libc/arch-mips/syscalls/__fchmodat.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmodat)
+ENTRY(__fchmodat)
     .set noreorder
     .cpload t9
     li v0, __NR_fchmodat
@@ -16,4 +16,4 @@
     j t9
     nop
     .set reorder
-END(fchmodat)
+END(__fchmodat)
diff --git a/libc/arch-mips64/syscalls/fchmod.S b/libc/arch-mips64/syscalls/__fchmod.S
similarity index 88%
rename from libc/arch-mips64/syscalls/fchmod.S
rename to libc/arch-mips64/syscalls/__fchmod.S
index a877b78..94dd0a1 100644
--- a/libc/arch-mips64/syscalls/fchmod.S
+++ b/libc/arch-mips64/syscalls/__fchmod.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmod)
+ENTRY(__fchmod)
     .set push
     .set noreorder
     li v0, __NR_fchmod
@@ -22,4 +22,5 @@
     j t9
     move ra, t0
     .set pop
-END(fchmod)
+END(__fchmod)
+.hidden __fchmod
diff --git a/libc/arch-mips64/syscalls/fchmodat.S b/libc/arch-mips64/syscalls/__fchmodat.S
similarity index 86%
rename from libc/arch-mips64/syscalls/fchmodat.S
rename to libc/arch-mips64/syscalls/__fchmodat.S
index 151492a..79f453f 100644
--- a/libc/arch-mips64/syscalls/fchmodat.S
+++ b/libc/arch-mips64/syscalls/__fchmodat.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmodat)
+ENTRY(__fchmodat)
     .set push
     .set noreorder
     li v0, __NR_fchmodat
@@ -22,4 +22,5 @@
     j t9
     move ra, t0
     .set pop
-END(fchmodat)
+END(__fchmodat)
+.hidden __fchmodat
diff --git a/libc/arch-x86/syscalls/fchmod.S b/libc/arch-x86/syscalls/__fchmod.S
similarity index 94%
rename from libc/arch-x86/syscalls/fchmod.S
rename to libc/arch-x86/syscalls/__fchmod.S
index 37851ff..7ad213e 100644
--- a/libc/arch-x86/syscalls/fchmod.S
+++ b/libc/arch-x86/syscalls/__fchmod.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmod)
+ENTRY(__fchmod)
     pushl   %ebx
     .cfi_def_cfa_offset 8
     .cfi_rel_offset ebx, 0
@@ -23,4 +23,4 @@
     popl    %ecx
     popl    %ebx
     ret
-END(fchmod)
+END(__fchmod)
diff --git a/libc/arch-x86/syscalls/fchmodat.S b/libc/arch-x86/syscalls/__fchmodat.S
similarity index 70%
rename from libc/arch-x86/syscalls/fchmodat.S
rename to libc/arch-x86/syscalls/__fchmodat.S
index f515512..f03c03f 100644
--- a/libc/arch-x86/syscalls/fchmodat.S
+++ b/libc/arch-x86/syscalls/__fchmodat.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmodat)
+ENTRY(__fchmodat)
     pushl   %ebx
     .cfi_def_cfa_offset 8
     .cfi_rel_offset ebx, 0
@@ -12,13 +12,9 @@
     pushl   %edx
     .cfi_adjust_cfa_offset 4
     .cfi_rel_offset edx, 0
-    pushl   %esi
-    .cfi_adjust_cfa_offset 4
-    .cfi_rel_offset esi, 0
-    mov     20(%esp), %ebx
-    mov     24(%esp), %ecx
-    mov     28(%esp), %edx
-    mov     32(%esp), %esi
+    mov     16(%esp), %ebx
+    mov     20(%esp), %ecx
+    mov     24(%esp), %edx
     movl    $__NR_fchmodat, %eax
     int     $0x80
     cmpl    $-MAX_ERRNO, %eax
@@ -28,9 +24,8 @@
     call    __set_errno_internal
     addl    $4, %esp
 1:
-    popl    %esi
     popl    %edx
     popl    %ecx
     popl    %ebx
     ret
-END(fchmodat)
+END(__fchmodat)
diff --git a/libc/arch-x86_64/syscalls/fchmod.S b/libc/arch-x86_64/syscalls/__fchmod.S
similarity index 84%
rename from libc/arch-x86_64/syscalls/fchmod.S
rename to libc/arch-x86_64/syscalls/__fchmod.S
index b35bd21..ba75f74 100644
--- a/libc/arch-x86_64/syscalls/fchmod.S
+++ b/libc/arch-x86_64/syscalls/__fchmod.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmod)
+ENTRY(__fchmod)
     movl    $__NR_fchmod, %eax
     syscall
     cmpq    $-MAX_ERRNO, %rax
@@ -12,4 +12,5 @@
     call    __set_errno_internal
 1:
     ret
-END(fchmod)
+END(__fchmod)
+.hidden __fchmod
diff --git a/libc/arch-x86_64/syscalls/fchmodat.S b/libc/arch-x86_64/syscalls/__fchmodat.S
similarity index 82%
rename from libc/arch-x86_64/syscalls/fchmodat.S
rename to libc/arch-x86_64/syscalls/__fchmodat.S
index 2d78d8e..a8fae95 100644
--- a/libc/arch-x86_64/syscalls/fchmodat.S
+++ b/libc/arch-x86_64/syscalls/__fchmodat.S
@@ -2,8 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmodat)
-    movq    %rcx, %r10
+ENTRY(__fchmodat)
     movl    $__NR_fchmodat, %eax
     syscall
     cmpq    $-MAX_ERRNO, %rax
@@ -13,4 +12,5 @@
     call    __set_errno_internal
 1:
     ret
-END(fchmodat)
+END(__fchmodat)
+.hidden __fchmodat
diff --git a/libc/bionic/__poll_chk.cpp b/libc/bionic/__poll_chk.cpp
new file mode 100644
index 0000000..3acac4e
--- /dev/null
+++ b/libc/bionic/__poll_chk.cpp
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#undef _FORTIFY_SOURCE
+#include <poll.h>
+#include "private/libc_logging.h"
+
+#include <stdio.h>
+
+extern "C" int __poll_chk(struct pollfd* fds, nfds_t fd_count, int timeout, size_t fds_size) {
+fprintf(stderr, "__poll_chk %p %i %i %i\n", fds, (int)fd_count, timeout, (int) fds_size);
+  if (__predict_false(fds_size / sizeof(*fds) < fd_count)) {
+    __fortify_chk_fail("poll: pollfd array smaller than fd count", 0);
+  }
+  return poll(fds, fd_count, timeout);
+}
+
+extern "C" int __ppoll_chk(struct pollfd* fds, nfds_t fd_count, const struct timespec* timeout, const sigset_t* mask, size_t fds_size) {
+fprintf(stderr, "__ppoll_chk %p %i %p %p %i\n", fds, (int)fd_count, timeout, mask, (int) fds_size);
+  if (__predict_false(fds_size / sizeof(*fds) < fd_count)) {
+    __fortify_chk_fail("ppoll: pollfd array smaller than fd count", 0);
+  }
+  return ppoll(fds, fd_count, timeout, mask);
+}
diff --git a/libc/bionic/fchmod.cpp b/libc/bionic/fchmod.cpp
new file mode 100644
index 0000000..6e020b6
--- /dev/null
+++ b/libc/bionic/fchmod.cpp
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+
+extern "C" int __fchmod(int, mode_t);
+
+int fchmod(int fd, mode_t mode) {
+  int saved_errno = errno;
+  int result = __fchmod(fd, mode);
+
+  if ((result == 0) || (errno != EBADF)) {
+    return result;
+  }
+
+  // fd could be an O_PATH file descriptor, and the kernel
+  // may not directly support fchmod() on such a file descriptor.
+  // Use /proc/self/fd instead to emulate this support.
+  // https://sourceware.org/bugzilla/show_bug.cgi?id=14578
+  //
+  // As of February 2015, there are no kernels which support fchmod
+  // on an O_PATH file descriptor, and "man open" documents fchmod
+  // on O_PATH file descriptors as returning EBADF.
+  int fd_flag = fcntl(fd, F_GETFL);
+  if ((fd_flag == -1) || ((fd_flag & O_PATH) == 0)) {
+    errno = EBADF;
+    return -1;
+  }
+
+  char buf[40];
+  snprintf(buf, sizeof(buf), "/proc/self/fd/%d", fd);
+  errno = saved_errno;
+  result = chmod(buf, mode);
+  if ((result == -1) && (errno == ELOOP)) {
+    // Linux does not support changing the mode of a symlink.
+    // For fchmodat(AT_SYMLINK_NOFOLLOW), POSIX requires a return
+    // value of ENOTSUP. Assume that's true here too.
+    errno = ENOTSUP;
+  }
+
+  return result;
+}
diff --git a/libc/bionic/fchmodat.cpp b/libc/bionic/fchmodat.cpp
new file mode 100644
index 0000000..c28e15a
--- /dev/null
+++ b/libc/bionic/fchmodat.cpp
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include "private/ErrnoRestorer.h"
+
+extern "C" int __fchmodat(int, const char*, mode_t);
+
+int fchmodat(int dirfd, const char* pathname, mode_t mode, int flags) {
+  if ((flags & ~AT_SYMLINK_NOFOLLOW) != 0) {
+    errno = EINVAL;
+    return -1;
+  }
+
+  if (flags & AT_SYMLINK_NOFOLLOW) {
+    // Emulate AT_SYMLINK_NOFOLLOW using the mechanism described
+    // at https://sourceware.org/bugzilla/show_bug.cgi?id=14578
+    // comment #10
+
+    int fd = openat(dirfd, pathname, O_PATH | O_NOFOLLOW | O_CLOEXEC);
+    if (fd == -1) {
+      return -1; // returns errno from openat
+    }
+
+    // POSIX requires that ENOTSUP be returned when the system
+    // doesn't support setting the mode of a symbolic link.
+    // This is true for all Linux kernels.
+    // We rely on the O_PATH compatibility layer added in the
+    // fchmod() function to get errno correct.
+    int result = fchmod(fd, mode);
+    ErrnoRestorer errno_restorer; // don't let close() clobber errno
+    close(fd);
+    return result;
+  }
+
+  return __fchmodat(dirfd, pathname, mode);
+}
diff --git a/libc/bionic/jemalloc.h b/libc/bionic/jemalloc.h
index feb1f43..98ea0ee 100644
--- a/libc/bionic/jemalloc.h
+++ b/libc/bionic/jemalloc.h
@@ -18,6 +18,7 @@
 #define LIBC_BIONIC_JEMALLOC_H_
 
 #include <jemalloc/jemalloc.h>
+#include <malloc.h>  // For struct mallinfo.
 
 // Need to wrap memalign since je_memalign fails on non-power of 2 alignments.
 #define je_memalign je_memalign_round_up_boundary
diff --git a/libc/bionic/libc_logging.cpp b/libc/bionic/libc_logging.cpp
index 49a3762..76bc46d 100644
--- a/libc/bionic/libc_logging.cpp
+++ b/libc/bionic/libc_logging.cpp
@@ -438,7 +438,7 @@
   vec[1].iov_base = const_cast<char*>(": ");
   vec[1].iov_len = 2;
   vec[2].iov_base = const_cast<char*>(msg);
-  vec[2].iov_len = strlen(msg) + 1;
+  vec[2].iov_len = strlen(msg);
   vec[3].iov_base = const_cast<char*>("\n");
   vec[3].iov_len = 1;
 
@@ -448,8 +448,7 @@
 }
 
 #ifdef TARGET_USES_LOGD
-static int __libc_open_log_socket()
-{
+static int __libc_open_log_socket() {
   // ToDo: Ideally we want this to fail if the gid of the current
   // process is AID_LOGD, but will have to wait until we have
   // registered this in private/android_filesystem_config.h. We have
@@ -491,7 +490,6 @@
 static int __libc_write_log(int priority, const char* tag, const char* msg) {
 #ifdef TARGET_USES_LOGD
   int main_log_fd = __libc_open_log_socket();
-
   if (main_log_fd == -1) {
     // Try stderr instead.
     return __libc_write_stderr(tag, msg);
@@ -515,9 +513,9 @@
   vec[3].iov_base = &priority;
   vec[3].iov_len = 1;
   vec[4].iov_base = const_cast<char*>(tag);
-  vec[4].iov_len = strlen(tag) + 1;
+  vec[4].iov_len = strlen(tag);
   vec[5].iov_base = const_cast<char*>(msg);
-  vec[5].iov_len = strlen(msg) + 1;
+  vec[5].iov_len = strlen(msg);
 #else
   int main_log_fd = TEMP_FAILURE_RETRY(open("/dev/log/main", O_CLOEXEC | O_WRONLY));
   if (main_log_fd == -1) {
@@ -532,9 +530,9 @@
   vec[0].iov_base = &priority;
   vec[0].iov_len = 1;
   vec[1].iov_base = const_cast<char*>(tag);
-  vec[1].iov_len = strlen(tag) + 1;
+  vec[1].iov_len = strlen(tag);
   vec[2].iov_base = const_cast<char*>(msg);
-  vec[2].iov_len = strlen(msg) + 1;
+  vec[2].iov_len = strlen(msg);
 #endif
 
   int result = TEMP_FAILURE_RETRY(writev(main_log_fd, vec, sizeof(vec) / sizeof(vec[0])));
@@ -614,7 +612,7 @@
   if (tag != 0) {
     __libc_android_log_event_uid(tag);
   }
-  __libc_fatal("FORTIFY_SOURCE: %s. Calling abort().", msg);
+  __libc_fatal("FORTIFY: %s", msg);
 }
 
 static void __libc_fatal(const char* format, va_list args) {
@@ -622,12 +620,12 @@
   BufferOutputStream os(msg, sizeof(msg));
   out_vformat(os, format, args);
 
-  // log to stderr for the benefit of "adb shell" users.
+  // Log to stderr for the benefit of "adb shell" users.
   struct iovec iov[2] = {
-    {msg, strlen(msg)},
-    {const_cast<void*>(static_cast<const void*>("\n")), 1},
+    { msg, os.total },
+    { const_cast<char*>("\n"), 1 },
   };
-  writev(2, iov, 2);
+  TEMP_FAILURE_RETRY(writev(2, iov, 2));
 
   // Log to the log for the benefit of regular app developers (whose stdout and stderr are closed).
   __libc_write_log(ANDROID_LOG_FATAL, "libc", msg);
diff --git a/libc/bionic/poll.cpp b/libc/bionic/poll.cpp
index d267229..23ef90a 100644
--- a/libc/bionic/poll.cpp
+++ b/libc/bionic/poll.cpp
@@ -26,6 +26,7 @@
  * SUCH DAMAGE.
  */
 
+#undef _FORTIFY_SOURCE
 #include <errno.h>
 #include <sys/poll.h>
 #include <sys/select.h>
diff --git a/libc/dns/resolv/res_cache.c b/libc/dns/resolv/res_cache.c
index 573fcbe..5a78450 100644
--- a/libc/dns/resolv/res_cache.c
+++ b/libc/dns/resolv/res_cache.c
@@ -104,10 +104,6 @@
  */
 #define  CONFIG_ENV  "BIONIC_DNSCACHE"
 
-/* entries older than CONFIG_SECONDS seconds are always discarded.
- */
-#define  CONFIG_SECONDS    (60*10)    /* 10 minutes */
-
 /* default number of entries kept in the cache. This value has been
  * determined by browsing through various sites and counting the number
  * of corresponding requests. Keep in mind that our framework is currently
diff --git a/libc/include/android/legacy_errno_inlines.h b/libc/include/android/legacy_errno_inlines.h
new file mode 100644
index 0000000..71096fc
--- /dev/null
+++ b/libc/include/android/legacy_errno_inlines.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _ANDROID_LEGACY_ERRNO_INLINES_H
+#define _ANDROID_LEGACY_ERRNO_INLINES_H
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+static __inline int __attribute__((deprecated)) __set_errno(int n) {
+  errno = n;
+  return -1;
+}
+
+__END_DECLS
+
+#endif /* _ANDROID_LEGACY_ERRNO_INLINES_H */
diff --git a/libc/include/android/legacy_signal_inlines.h b/libc/include/android/legacy_signal_inlines.h
new file mode 100644
index 0000000..1b6e687
--- /dev/null
+++ b/libc/include/android/legacy_signal_inlines.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _ANDROID_LEGACY_SIGNAL_INLINES_H_
+#define _ANDROID_LEGACY_SIGNAL_INLINES_H_
+
+#include <string.h>
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+extern sighandler_t bsd_signal(int signum, sighandler_t handler);
+
+static __inline int sigismember(sigset_t *set, int signum) {
+  /* Signal numbers start at 1, but bit positions start at 0. */
+  int bit = signum - 1;
+  const unsigned long *local_set = (const unsigned long *)set;
+  if (set == NULL || bit < 0 || bit >= (int)(8 * sizeof(sigset_t))) {
+    errno = EINVAL;
+    return -1;
+  }
+  return (int)((local_set[bit / LONG_BIT] >> (bit % LONG_BIT)) & 1);
+}
+
+static __inline int sigaddset(sigset_t *set, int signum) {
+  /* Signal numbers start at 1, but bit positions start at 0. */
+  int bit = signum - 1;
+  unsigned long *local_set = (unsigned long *)set;
+  if (set == NULL || bit < 0 || bit >= (int)(8 * sizeof(sigset_t))) {
+    errno = EINVAL;
+    return -1;
+  }
+  local_set[bit / LONG_BIT] |= 1UL << (bit % LONG_BIT);
+  return 0;
+}
+
+static __inline int sigdelset(sigset_t *set, int signum) {
+  /* Signal numbers start at 1, but bit positions start at 0. */
+  int bit = signum - 1;
+  unsigned long *local_set = (unsigned long *)set;
+  if (set == NULL || bit < 0 || bit >= (int)(8 * sizeof(sigset_t))) {
+    errno = EINVAL;
+    return -1;
+  }
+  local_set[bit / LONG_BIT] &= ~(1UL << (bit % LONG_BIT));
+  return 0;
+}
+
+static __inline int sigemptyset(sigset_t *set) {
+  if (set == NULL) {
+    errno = EINVAL;
+    return -1;
+  }
+  memset(set, 0, sizeof(sigset_t));
+  return 0;
+}
+
+static __inline int sigfillset(sigset_t *set) {
+  if (set == NULL) {
+    errno = EINVAL;
+    return -1;
+  }
+  memset(set, ~0, sizeof(sigset_t));
+  return 0;
+}
+
+static __inline sighandler_t signal(int s, sighandler_t f) {
+  return bsd_signal(s, f);
+}
+
+__END_DECLS
+
+#endif /* _ANDROID_LEGACY_SIGNAL_INLINES_H_ */
diff --git a/libc/include/android/legacy_stdlib_inlines.h b/libc/include/android/legacy_stdlib_inlines.h
new file mode 100644
index 0000000..58a2a9e
--- /dev/null
+++ b/libc/include/android/legacy_stdlib_inlines.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _ANDROID_LEGACY_STDLIB_INLINES_H_
+#define _ANDROID_LEGACY_STDLIB_INLINES_H_
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+static __inline float strtof(const char *nptr, char **endptr) {
+  return (float)strtod(nptr, endptr);
+}
+
+static __inline double atof(const char *nptr) { return (strtod(nptr, NULL)); }
+
+static __inline int abs(int __n) { return (__n < 0) ? -__n : __n; }
+
+static __inline long labs(long __n) { return (__n < 0L) ? -__n : __n; }
+
+static __inline long long llabs(long long __n) {
+  return (__n < 0LL) ? -__n : __n;
+}
+
+static __inline int rand(void) { return (int)lrand48(); }
+
+static __inline void srand(unsigned int __s) { srand48(__s); }
+
+static __inline long random(void) { return lrand48(); }
+
+static __inline void srandom(unsigned int __s) { srand48(__s); }
+
+static __inline int grantpt(int __fd __attribute((unused))) {
+  return 0; /* devpts does this all for us! */
+}
+
+__END_DECLS
+
+#endif /* _ANDROID_LEGACY_STDLIB_INLINES_H_ */
diff --git a/libc/include/android/legacy_sys_atomics_inlines.h b/libc/include/android/legacy_sys_atomics_inlines.h
new file mode 100644
index 0000000..85cbade
--- /dev/null
+++ b/libc/include/android/legacy_sys_atomics_inlines.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _ANDROID_LEGACY_SYS_ATOMICS_INLINES_H_
+#define _ANDROID_LEGACY_SYS_ATOMICS_INLINES_H_
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+/* Note: atomic operations that were exported by the C library didn't
+ *       provide any memory barriers, which created potential issues on
+ *       multi-core devices. We now define them as inlined calls to
+ *       GCC sync builtins, which always provide a full barrier.
+ *
+ *       NOTE: The C library still exports atomic functions by the same
+ *              name to ensure ABI stability for existing NDK machine code.
+ *
+ *       If you are an NDK developer, we encourage you to rebuild your
+ *       unmodified sources against this header as soon as possible.
+ */
+#define __ATOMIC_INLINE__ static __inline __attribute__((always_inline))
+
+__ATOMIC_INLINE__ int __atomic_cmpxchg(int old, int _new, volatile int *ptr) {
+  /* We must return 0 on success */
+  return __sync_val_compare_and_swap(ptr, old, _new) != old;
+}
+
+__ATOMIC_INLINE__ int __atomic_swap(int _new, volatile int *ptr) {
+  int prev;
+  do {
+    prev = *ptr;
+  } while (__sync_val_compare_and_swap(ptr, prev, _new) != prev);
+  return prev;
+}
+
+__ATOMIC_INLINE__ int __atomic_dec(volatile int *ptr) {
+  return __sync_fetch_and_sub(ptr, 1);
+}
+
+__ATOMIC_INLINE__ int __atomic_inc(volatile int *ptr) {
+  return __sync_fetch_and_add(ptr, 1);
+}
+
+__END_DECLS
+
+#endif /* _ANDROID_LEGACY_SYS_ATOMICS_INLINES_H_ */
diff --git a/libc/include/android/legacy_sys_stat_inlines.h b/libc/include/android/legacy_sys_stat_inlines.h
new file mode 100644
index 0000000..f6d3c0f
--- /dev/null
+++ b/libc/include/android/legacy_sys_stat_inlines.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _ANDROID_LEGACY_SYS_STAT_INLINES_H_
+#define _ANDROID_LEGACY_SYS_STAT_INLINES_H_
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+static __inline int mkfifo(const char *__p, mode_t __m) {
+  return mknod(__p, (__m & ~S_IFMT) | S_IFIFO, (dev_t)0);
+}
+
+__END_DECLS
+
+#endif /* _ANDROID_LEGACY_SYS_STAT_INLINES_H_ */
diff --git a/libc/include/android/legacy_termios_inlines.h b/libc/include/android/legacy_termios_inlines.h
new file mode 100644
index 0000000..fb61f27
--- /dev/null
+++ b/libc/include/android/legacy_termios_inlines.h
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _ANDROID_LEGACY_TERMIOS_INLINES_H_
+#define _ANDROID_LEGACY_TERMIOS_INLINES_H_
+
+#include <linux/termios.h>
+#include <sys/cdefs.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+
+__BEGIN_DECLS
+
+static __inline int tcgetattr(int fd, struct termios *s) {
+  return ioctl(fd, TCGETS, s);
+}
+
+static __inline int tcsetattr(int fd, int __opt, const struct termios *s) {
+  return ioctl(fd, __opt, (void *)s);
+}
+
+static __inline int tcflow(int fd, int action) {
+  return ioctl(fd, TCXONC, (void *)(intptr_t)action);
+}
+
+static __inline int tcflush(int fd, int __queue) {
+  return ioctl(fd, TCFLSH, (void *)(intptr_t)__queue);
+}
+
+static __inline pid_t tcgetsid(int fd) {
+  pid_t _pid;
+  return ioctl(fd, TIOCGSID, &_pid) ? (pid_t)-1 : _pid;
+}
+
+static __inline int tcsendbreak(int fd, int __duration) {
+  return ioctl(fd, TCSBRKP, (void *)(uintptr_t)__duration);
+}
+
+static __inline speed_t cfgetospeed(const struct termios *s) {
+  return (speed_t)(s->c_cflag & CBAUD);
+}
+
+static __inline int cfsetospeed(struct termios *s, speed_t speed) {
+  s->c_cflag = (s->c_cflag & ~CBAUD) | (speed & CBAUD);
+  return 0;
+}
+
+static __inline speed_t cfgetispeed(const struct termios *s) {
+  return (speed_t)(s->c_cflag & CBAUD);
+}
+
+static __inline int cfsetispeed(struct termios *s, speed_t speed) {
+  s->c_cflag = (s->c_cflag & ~CBAUD) | (speed & CBAUD);
+  return 0;
+}
+
+static __inline void cfmakeraw(struct termios *s) {
+  s->c_iflag &=
+      ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
+  s->c_oflag &= ~OPOST;
+  s->c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
+  s->c_cflag &= ~(CSIZE | PARENB);
+  s->c_cflag |= CS8;
+}
+
+__END_DECLS
+
+#endif /* _ANDROID_LEGACY_TERMIOS_INLINES_H_ */
diff --git a/libc/include/ctype.h b/libc/include/ctype.h
index d05a952..83b5ba7 100644
--- a/libc/include/ctype.h
+++ b/libc/include/ctype.h
@@ -43,36 +43,37 @@
 #include <sys/cdefs.h>
 #include <xlocale.h>
 
-#define	_CTYPE_U	0x01
-#define	_CTYPE_L	0x02
-#define	_CTYPE_D	0x04
-#define	_CTYPE_S	0x08
-#define	_CTYPE_P	0x10
-#define	_CTYPE_C	0x20
-#define	_CTYPE_X	0x40
-#define	_CTYPE_B	0x80
-#define	_CTYPE_R	(_CTYPE_P|_CTYPE_U|_CTYPE_L|_CTYPE_D|_CTYPE_B)
-#define	_CTYPE_A	(_CTYPE_L|_CTYPE_U)
+#define _CTYPE_U 0x01
+#define _CTYPE_L 0x02
+#define _CTYPE_D 0x04
+#define _CTYPE_S 0x08
+#define _CTYPE_P 0x10
+#define _CTYPE_C 0x20
+#define _CTYPE_X 0x40
+#define _CTYPE_B 0x80
+#define _CTYPE_R (_CTYPE_P|_CTYPE_U|_CTYPE_L|_CTYPE_D|_CTYPE_B)
+#define _CTYPE_A (_CTYPE_L|_CTYPE_U)
 
 __BEGIN_DECLS
 
 extern const char	*_ctype_;
 
 #if defined(__GNUC__) || defined(_ANSI_LIBRARY) || defined(lint)
-int	isalnum(int);
-int	isalpha(int);
-int	iscntrl(int);
-int	isdigit(int);
-int	isgraph(int);
-int	islower(int);
-int	isprint(int);
-int	ispunct(int);
-int	isspace(int);
-int	isupper(int);
-int	isxdigit(int);
-int	tolower(int);
-int	toupper(int);
+int isalnum(int);
+int isalpha(int);
+int iscntrl(int);
+int isdigit(int);
+int isgraph(int);
+int islower(int);
+int isprint(int);
+int ispunct(int);
+int isspace(int);
+int isupper(int);
+int isxdigit(int);
+int tolower(int);
+int toupper(int);
 
+#if __ANDROID_API__ >= 21
 int isalnum_l(int, locale_t);
 int isalpha_l(int, locale_t);
 int isblank_l(int, locale_t);
@@ -87,17 +88,18 @@
 int isxdigit_l(int, locale_t);
 int tolower_l(int, locale_t);
 int toupper_l(int, locale_t);
+#endif /* __ANDROID_API__ >= 21 */
 
 #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 || __POSIX_VISIBLE > 200112 \
     || __XPG_VISIBLE > 600
-int	isblank(int);
+int isblank(int);
 #endif
 
 #if __BSD_VISIBLE || __XPG_VISIBLE
-int	isascii(int);
-int	toascii(int);
-int	_tolower(int);
-int	_toupper(int);
+int isascii(int);
+int toascii(int);
+int _tolower(int);
+int _toupper(int);
 #endif /* __BSD_VISIBLE || __XPG_VISIBLE */
 
 #endif /* __GNUC__ || _ANSI_LIBRARY || lint */
diff --git a/libc/include/errno.h b/libc/include/errno.h
index 1a36b7a..82f4b42 100644
--- a/libc/include/errno.h
+++ b/libc/include/errno.h
@@ -46,6 +46,10 @@
 /* a macro expanding to the errno l-value */
 #define  errno   (*__errno())
 
+#if __ANDROID_API__ < 21
+#include <android/legacy_errno_inlines.h>
+#endif
+
 __END_DECLS
 
 #endif /* _ERRNO_H */
diff --git a/libc/include/poll.h b/libc/include/poll.h
index 0199cab..7c16d81 100644
--- a/libc/include/poll.h
+++ b/libc/include/poll.h
@@ -38,8 +38,52 @@
 
 typedef unsigned int nfds_t;
 
-extern int poll(struct pollfd*, nfds_t, int);
-extern int ppoll(struct pollfd*, nfds_t, const struct timespec*, const sigset_t*);
+int poll(struct pollfd*, nfds_t, int);
+int ppoll(struct pollfd*, nfds_t, const struct timespec*, const sigset_t*);
+
+int __poll_chk(struct pollfd*, nfds_t, int, size_t);
+int __poll_real(struct pollfd*, nfds_t, int) __RENAME(poll);
+__errordecl(__poll_too_small_error, "poll: pollfd array smaller than fd count");
+
+int __ppoll_chk(struct pollfd*, nfds_t, const struct timespec*, const sigset_t*, size_t);
+int __ppoll_real(struct pollfd*, nfds_t, const struct timespec*, const sigset_t*) __RENAME(ppoll);
+__errordecl(__ppoll_too_small_error, "ppoll: pollfd array smaller than fd count");
+
+#if defined(__BIONIC_FORTIFY)
+
+__BIONIC_FORTIFY_INLINE
+int poll(struct pollfd* fds, nfds_t fd_count, int timeout) {
+#if defined(__clang__)
+  return __poll_chk(fds, fd_count, timeout, __bos(fds));
+#else
+  if (__bos(fds) != __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+    if (!__builtin_constant_p(fd_count)) {
+      return __poll_chk(fds, fd_count, timeout, __bos(fds));
+    } else if (__bos(fds) / sizeof(*fds) < fd_count) {
+      __poll_too_small_error();
+    }
+  }
+  return __poll_real(fds, fd_count, timeout);
+#endif
+}
+
+__BIONIC_FORTIFY_INLINE
+int ppoll(struct pollfd* fds, nfds_t fd_count, const struct timespec* timeout, const sigset_t* mask) {
+#if defined(__clang__)
+  return __ppoll_chk(fds, fd_count, timeout, mask, __bos(fds));
+#else
+  if (__bos(fds) != __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+    if (!__builtin_constant_p(fd_count)) {
+      return __ppoll_chk(fds, fd_count, timeout, mask, __bos(fds));
+    } else if (__bos(fds) / sizeof(*fds) < fd_count) {
+      __ppoll_too_small_error();
+    }
+  }
+  return __ppoll_real(fds, fd_count, timeout, mask);
+#endif
+}
+
+#endif
 
 __END_DECLS
 
diff --git a/libc/include/signal.h b/libc/include/signal.h
index 39d37e9..554e0ac 100644
--- a/libc/include/signal.h
+++ b/libc/include/signal.h
@@ -105,15 +105,15 @@
 
 extern int sigaction(int, const struct sigaction*, struct sigaction*);
 
-extern sighandler_t signal(int, sighandler_t);
+_BIONIC_NOT_BEFORE_21(extern sighandler_t signal(int, sighandler_t);)
 
 extern int siginterrupt(int, int);
 
-extern int sigaddset(sigset_t*, int);
-extern int sigdelset(sigset_t*, int);
-extern int sigemptyset(sigset_t*);
-extern int sigfillset(sigset_t*);
-extern int sigismember(const sigset_t*, int);
+_BIONIC_NOT_BEFORE_21(extern int sigaddset(sigset_t*, int);)
+_BIONIC_NOT_BEFORE_21(extern int sigdelset(sigset_t*, int);)
+_BIONIC_NOT_BEFORE_21(extern int sigemptyset(sigset_t*);)
+_BIONIC_NOT_BEFORE_21(extern int sigfillset(sigset_t*);)
+_BIONIC_NOT_BEFORE_21(extern int sigismember(const sigset_t*, int);)
 
 extern int sigpending(sigset_t*) __nonnull((1));
 extern int sigprocmask(int, const sigset_t*, sigset_t*);
@@ -136,6 +136,10 @@
 extern int sigtimedwait(const sigset_t*, siginfo_t*, const struct timespec*);
 extern int sigwaitinfo(const sigset_t*, siginfo_t*);
 
+#if __ANDROID_API__ < 21
+#include <android/legacy_signal_inlines.h>
+#endif
+
 __END_DECLS
 
 #endif /* _SIGNAL_H_ */
diff --git a/libc/include/stdio.h b/libc/include/stdio.h
index c0dac1a..b04aa24 100644
--- a/libc/include/stdio.h
+++ b/libc/include/stdio.h
@@ -207,16 +207,9 @@
 #define	L_tmpnam	1024	/* XXX must be == PATH_MAX */
 #define	TMP_MAX		308915776
 
-/* Always ensure that these are consistent with <fcntl.h> and <unistd.h>! */
-#ifndef SEEK_SET
-#define	SEEK_SET	0	/* set file offset to offset */
-#endif
-#ifndef SEEK_CUR
-#define	SEEK_CUR	1	/* set file offset to current plus offset */
-#endif
-#ifndef SEEK_END
-#define	SEEK_END	2	/* set file offset to EOF plus offset */
-#endif
+#define SEEK_SET 0
+#define SEEK_CUR 1
+#define SEEK_END 2
 
 /*
  * Functions defined in ANSI C standard.
diff --git a/libc/include/stdlib.h b/libc/include/stdlib.h
index 4cb288d..cbd7aeb 100644
--- a/libc/include/stdlib.h
+++ b/libc/include/stdlib.h
@@ -76,10 +76,10 @@
 
 extern int posix_memalign(void **memptr, size_t alignment, size_t size);
 
-extern double atof(const char*);
+_BIONIC_NOT_BEFORE_21(extern double atof(const char*);)
 
 extern double strtod(const char*, char**) __LIBC_ABI_PUBLIC__;
-extern float strtof(const char*, char**) __LIBC_ABI_PUBLIC__;
+_BIONIC_NOT_BEFORE_21(extern float strtof(const char*, char**) __LIBC_ABI_PUBLIC__;)
 extern long double strtold(const char*, char**) __LIBC_ABI_PUBLIC__;
 
 extern long double strtold_l(const char *, char **, locale_t) __LIBC_ABI_PUBLIC__;
@@ -90,12 +90,12 @@
 extern long atol(const char*) __purefunc;
 extern long long atoll(const char*) __purefunc;
 
-extern int abs(int) __pure2;
-extern long labs(long) __pure2;
-extern long long llabs(long long) __pure2;
+_BIONIC_NOT_BEFORE_21(extern int abs(int) __pure2;)
+_BIONIC_NOT_BEFORE_21(extern long labs(long) __pure2;)
+_BIONIC_NOT_BEFORE_21(extern long long llabs(long long) __pure2;)
 
 extern char * realpath(const char *path, char *resolved);
-extern int system(const char * string);
+extern int system(const char *string);
 
 extern void * bsearch(const void *key, const void *base0,
 	size_t nmemb, size_t size,
@@ -109,9 +109,9 @@
 
 #define RAND_MAX 0x7fffffff
 
-int rand(void);
+_BIONIC_NOT_BEFORE_21(int rand(void);)
 int rand_r(unsigned int*);
-void srand(unsigned int);
+_BIONIC_NOT_BEFORE_21(void srand(unsigned int);)
 
 double drand48(void);
 double erand48(unsigned short[3]);
@@ -124,12 +124,12 @@
 void srand48(long);
 
 char* initstate(unsigned int, char*, size_t);
-long random(void);
+_BIONIC_NOT_BEFORE_21(long random(void);)
 char* setstate(char*);
-void srandom(unsigned int);
+_BIONIC_NOT_BEFORE_21(void srandom(unsigned int);)
 
 int getpt(void);
-int grantpt(int);
+_BIONIC_NOT_BEFORE_21(int grantpt(int);)
 int posix_openpt(int);
 char* ptsname(int);
 int ptsname_r(int, char*, size_t);
@@ -172,6 +172,10 @@
 extern size_t __ctype_get_mb_cur_max(void);
 #define MB_CUR_MAX __ctype_get_mb_cur_max()
 
+#if __ANDROID_API__ < 21
+#include <android/legacy_stdlib_inlines.h>
+#endif
+
 __END_DECLS
 
 #endif /* _STDLIB_H */
diff --git a/libc/include/string.h b/libc/include/string.h
index 4ca77ae..d67928c 100644
--- a/libc/include/string.h
+++ b/libc/include/string.h
@@ -31,7 +31,6 @@
 
 #include <sys/cdefs.h>
 #include <stddef.h>
-#include <malloc.h>
 #include <xlocale.h>
 
 __BEGIN_DECLS
diff --git a/libc/include/sys/atomics.h b/libc/include/sys/atomics.h
new file mode 100644
index 0000000..38ab366
--- /dev/null
+++ b/libc/include/sys/atomics.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _SYS_ATOMICS_H_
+#define _SYS_ATOMICS_H_
+
+/*
+ * These got proper out of line definitions in L. Putting the inline definitions
+ * back for old targets brings us closer to being able to use one set of headers
+ * for all API levels.
+ *
+ * The other inlines we put back went in to their appropriate headers, but the
+ * sys/atomics.h header was removed, so we'll just add these somewhere we can be
+ * sure they will be included.
+ */
+#if __ANDROID_API__ < 21
+#include <android/legacy_sys_atomics_inlines.h>
+#endif
+
+#endif /* _SYS_ATOMICS_H_ */
diff --git a/libc/include/sys/cdefs.h b/libc/include/sys/cdefs.h
index 21d59fa..48763d7 100644
--- a/libc/include/sys/cdefs.h
+++ b/libc/include/sys/cdefs.h
@@ -556,4 +556,10 @@
 /* Used to rename functions so that the compiler emits a call to 'x' rather than the function this was applied to. */
 #define __RENAME(x) __asm__(#x)
 
+#if __ANDROID_API__ >= 21
+#define _BIONIC_NOT_BEFORE_21(x) x
+#else
+#define _BIONIC_NOT_BEFORE_21(x)
+#endif /* __ANDROID_API__ >= 21 */
+
 #endif /* !_SYS_CDEFS_H_ */
diff --git a/libc/include/sys/select.h b/libc/include/sys/select.h
index 553050b..0c4a823 100644
--- a/libc/include/sys/select.h
+++ b/libc/include/sys/select.h
@@ -31,7 +31,6 @@
 
 #include <linux/time.h>
 #include <signal.h>
-#include <string.h>
 #include <sys/cdefs.h>
 #include <sys/types.h>
 
@@ -49,7 +48,14 @@
 #define __FDMASK(fd) (1UL << ((fd) % NFDBITS))
 #define __FDS_BITS(set) (((fd_set*)(set))->fds_bits)
 
-#define FD_ZERO(set) (memset(set, 0, sizeof(*(fd_set*)(set))))
+/* Inline loop so we don't have to declare memset. */
+#define FD_ZERO(set) \
+  do { \
+    size_t __i; \
+    for (__i = 0; __i < __FDSET_LONGS; ++__i) { \
+      (set)->fds_bits[__i] = 0; \
+    } \
+  } while (0)
 
 extern void __FD_CLR_chk(int, fd_set*, size_t);
 extern void __FD_SET_chk(int, fd_set*, size_t);
diff --git a/libc/include/sys/stat.h b/libc/include/sys/stat.h
index eb9bf2e..c22516f 100644
--- a/libc/include/sys/stat.h
+++ b/libc/include/sys/stat.h
@@ -171,7 +171,7 @@
 }
 #endif /* defined(__BIONIC_FORTIFY) */
 
-extern int mkfifo(const char*, mode_t);
+_BIONIC_NOT_BEFORE_21(extern int mkfifo(const char*, mode_t);)
 extern int mkfifoat(int, const char*, mode_t);
 
 extern int fchmodat(int, const char*, mode_t, int);
@@ -183,6 +183,10 @@
 extern int utimensat(int fd, const char *path, const struct timespec times[2], int flags);
 extern int futimens(int fd, const struct timespec times[2]);
 
+#if __ANDROID_API__ < 21
+#include <android/legacy_sys_stat_inlines.h>
+#endif
+
 __END_DECLS
 
 #endif /* _SYS_STAT_H_ */
diff --git a/libc/include/termios.h b/libc/include/termios.h
index b9685ca..683fde2 100644
--- a/libc/include/termios.h
+++ b/libc/include/termios.h
@@ -35,6 +35,7 @@
 
 __BEGIN_DECLS
 
+#if __ANDROID_API__ >= 21
 speed_t cfgetispeed(const struct termios*);
 speed_t cfgetospeed(const struct termios*);
 void cfmakeraw(struct termios*);
@@ -48,6 +49,9 @@
 pid_t tcgetsid(int);
 int tcsendbreak(int, int);
 int tcsetattr(int, int, const struct termios*);
+#else
+#include <android/legacy_termios_inlines.h>
+#endif
 
 __END_DECLS
 
diff --git a/libc/include/unistd.h b/libc/include/unistd.h
index c755715..6403d4a 100644
--- a/libc/include/unistd.h
+++ b/libc/include/unistd.h
@@ -35,14 +35,19 @@
 #include <sys/select.h>
 #include <sys/sysconf.h>
 
+#include <machine/posix_limits.h>
+
 __BEGIN_DECLS
 
-/* Standard file descriptor numbers. */
 #define STDIN_FILENO	0
 #define STDOUT_FILENO	1
 #define STDERR_FILENO	2
 
-/* Values for whence in fseek and lseek */
+#define F_OK 0
+#define X_OK 1
+#define W_OK 2
+#define R_OK 4
+
 #define SEEK_SET 0
 #define SEEK_CUR 1
 #define SEEK_END 2
@@ -68,8 +73,6 @@
 #define _PC_PRIO_IO 18
 #define _PC_SYNC_IO 19
 
-#include <machine/posix_limits.h>
-
 extern char** environ;
 
 extern __noreturn void _exit(int);
@@ -121,13 +124,6 @@
 extern long fpathconf(int, int);
 extern long pathconf(const char*, int);
 
-
-/* Macros for access() */
-#define R_OK  4  /* Read */
-#define W_OK  2  /* Write */
-#define X_OK  1  /* Execute */
-#define F_OK  0  /* Existence */
-
 extern int access(const char*, int);
 extern int faccessat(int, const char*, int, int);
 extern int link(const char*, const char*);
diff --git a/libc/tools/zoneinfo/update-tzdata.py b/libc/tools/zoneinfo/update-tzdata.py
index 330f166..4847356 100755
--- a/libc/tools/zoneinfo/update-tzdata.py
+++ b/libc/tools/zoneinfo/update-tzdata.py
@@ -117,13 +117,20 @@
   # Build the ICU tools.
   print 'Configuring ICU tools...'
   subprocess.check_call(['%s/runConfigureICU' % icu_dir, 'Linux'])
-  print 'Making ICU tools...'
-  subprocess.check_call(['make', '-j32'])
 
   # Run the ICU tools.
   os.chdir('tools/tzcode')
+
+  # The tz2icu tool only picks up icuregions and icuzones in they are in the CWD
+  for icu_data_file in [ 'icuregions', 'icuzones']:
+    icu_data_file_source = '%s/tools/tzcode/%s' % (icu_dir, icu_data_file)
+    icu_data_file_symlink = './%s' % icu_data_file
+    os.symlink(icu_data_file_source, icu_data_file_symlink)
+
   shutil.copyfile('%s/%s' % (original_working_dir, data_filename), data_filename)
   print 'Making ICU data...'
+  # The Makefile assumes the existence of the bin directory.
+  os.mkdir('%s/bin' % icu_working_dir)
   subprocess.check_call(['make'])
 
   # Copy the source file to its ultimate destination.
diff --git a/tests/Android.mk b/tests/Android.mk
index 82a92f0..bd4695f 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -329,6 +329,7 @@
 bionic-unit-tests-glibc_whole_static_libraries := \
     libBionicStandardTests \
     libBionicGtestMain \
+    $(fortify_libs) \
 
 bionic-unit-tests-glibc_ldlibs := \
     -lrt -ldl -lutil \
diff --git a/tests/fortify_test.cpp b/tests/fortify_test.cpp
index 48764aa..6cbc695 100644
--- a/tests/fortify_test.cpp
+++ b/tests/fortify_test.cpp
@@ -19,6 +19,7 @@
 
 #include <fcntl.h>
 #include <malloc.h>
+#include <poll.h>
 #include <signal.h>
 #include <stdarg.h>
 #include <string.h>
@@ -26,6 +27,12 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 
+#if __BIONIC__
+#define ASSERT_FORTIFY(expr) ASSERT_EXIT(expr, testing::KilledBySignal(SIGABRT), "FORTIFY")
+#else
+#define ASSERT_FORTIFY(expr) ASSERT_EXIT(expr, testing::KilledBySignal(SIGABRT), "")
+#endif
+
 // Fortify test code needs to run multiple times, so TEST_NAME macro is used to
 // distinguish different tests. TEST_NAME is defined in compilation command.
 #define DEATHTEST_PASTER(name) name##_DeathTest
@@ -48,8 +55,7 @@
 TEST_F(DEATHTEST, stpncpy_fortified2) {
   foo myfoo;
   int copy_amt = atoi("11");
-  ASSERT_EXIT(stpncpy(myfoo.a, "01234567890", copy_amt),
-              testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(stpncpy(myfoo.a, "01234567890", copy_amt));
 }
 #endif
 
@@ -60,8 +66,7 @@
   foo myfoo;
   memset(&myfoo, 0, sizeof(myfoo));
   myfoo.one[0] = 'A'; // not null terminated string
-  ASSERT_EXIT(stpncpy(myfoo.b, myfoo.one, sizeof(myfoo.b)),
-              testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(stpncpy(myfoo.b, myfoo.one, sizeof(myfoo.b)));
 }
 #endif
 
@@ -71,8 +76,7 @@
 TEST_F(DEATHTEST, strncpy_fortified2) {
   foo myfoo;
   int copy_amt = atoi("11");
-  ASSERT_EXIT(strncpy(myfoo.a, "01234567890", copy_amt),
-              testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strncpy(myfoo.a, "01234567890", copy_amt));
 }
 #endif
 
@@ -83,8 +87,7 @@
   foo myfoo;
   memset(&myfoo, 0, sizeof(myfoo));
   myfoo.one[0] = 'A'; // not null terminated string
-  ASSERT_EXIT(strncpy(myfoo.b, myfoo.one, sizeof(myfoo.b)),
-              testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strncpy(myfoo.b, myfoo.one, sizeof(myfoo.b)));
 }
 #endif
 
@@ -95,8 +98,7 @@
   foo myfoo;
   char source_buf[15];
   memcpy(source_buf, "12345678901234", 15);
-  ASSERT_EXIT(sprintf(myfoo.a, "%s", source_buf),
-              testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(sprintf(myfoo.a, "%s", source_buf));
 }
 #endif
 
@@ -105,8 +107,7 @@
 // this buffer overflow. TODO: Fix clang.
 TEST_F(DEATHTEST, sprintf2_fortified2) {
   foo myfoo;
-  ASSERT_EXIT(sprintf(myfoo.a, "0123456789"),
-              testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(sprintf(myfoo.a, "0123456789"));
 }
 #endif
 
@@ -125,11 +126,11 @@
 }
 
 TEST_F(DEATHTEST, vsprintf_fortified2) {
-  ASSERT_EXIT(vsprintf_helper2("%s", "0123456789"), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(vsprintf_helper2("%s", "0123456789"));
 }
 
 TEST_F(DEATHTEST, vsprintf2_fortified2) {
-  ASSERT_EXIT(vsprintf_helper2("0123456789"), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(vsprintf_helper2("0123456789"));
 }
 #endif
 
@@ -149,11 +150,11 @@
 }
 
 TEST_F(DEATHTEST, vsnprintf_fortified2) {
-  ASSERT_EXIT(vsnprintf_helper2("%s", "0123456789"), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(vsnprintf_helper2("%s", "0123456789"));
 }
 
 TEST_F(DEATHTEST, vsnprintf2_fortified2) {
-  ASSERT_EXIT(vsnprintf_helper2("0123456789"), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(vsnprintf_helper2("0123456789"));
 }
 #endif
 
@@ -165,8 +166,7 @@
 #if defined(__BIONIC__)
   foo myfoo;
   char* src = strdup("");
-  ASSERT_EXIT(stpcpy(myfoo.empty, src),
-              testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(stpcpy(myfoo.empty, src));
   free(src);
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -182,8 +182,7 @@
 #if defined(__BIONIC__)
   foo myfoo;
   char* src = strdup("");
-  ASSERT_EXIT(strcpy(myfoo.empty, src),
-              testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strcpy(myfoo.empty, src));
   free(src);
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -199,8 +198,7 @@
 #if defined(__BIONIC__)
   foo myfoo;
   char* src = strdup("1");
-  ASSERT_EXIT(strcpy(myfoo.empty, src),
-              testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strcpy(myfoo.empty, src));
   free(src);
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -216,8 +214,7 @@
 #if defined(__BIONIC__)
   foo myfoo;
   char* src = strdup("12");
-  ASSERT_EXIT(strcpy(myfoo.one, src),
-              testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strcpy(myfoo.one, src));
   free(src);
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -233,8 +230,7 @@
   foo myfoo;
   memcpy(myfoo.a, "0123456789", sizeof(myfoo.a));
   myfoo.b[0] = '\0';
-  ASSERT_EXIT(printf("%s", strchr(myfoo.a, 'a')),
-              testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(printf("%s", strchr(myfoo.a, 'a')));
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif // __BIONIC__
@@ -249,8 +245,7 @@
   foo myfoo;
   memcpy(myfoo.a, "0123456789", 10);
   memcpy(myfoo.b, "01234", 6);
-  ASSERT_EXIT(printf("%s", strrchr(myfoo.a, 'a')),
-              testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(printf("%s", strrchr(myfoo.a, 'a')));
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif // __BIONIC__
@@ -265,8 +260,7 @@
   foo myfoo;
   strcpy(myfoo.a, "01");
   size_t n = strlen(myfoo.a);
-  ASSERT_EXIT(strlcpy(myfoo.one, myfoo.a, n),
-              testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strlcpy(myfoo.one, myfoo.a, n));
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif // __BIONIC__
@@ -282,8 +276,7 @@
   strcpy(myfoo.a, "01");
   myfoo.one[0] = '\0';
   size_t n = strlen(myfoo.a);
-  ASSERT_EXIT(strlcat(myfoo.one, myfoo.a, n),
-              testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strlcat(myfoo.one, myfoo.a, n));
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif // __BIONIC__
@@ -297,7 +290,7 @@
   foo myfoo;
   size_t n = atoi("10"); // avoid compiler optimizations
   strncpy(myfoo.a, "012345678", n);
-  ASSERT_EXIT(strncat(myfoo.a, "9", n), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strncat(myfoo.a, "9", n));
 }
 #endif
 
@@ -308,7 +301,7 @@
   foo myfoo;
   myfoo.a[0] = '\0';
   size_t n = atoi("10"); // avoid compiler optimizations
-  ASSERT_EXIT(strncat(myfoo.a, "0123456789", n), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strncat(myfoo.a, "0123456789", n));
 }
 #endif
 
@@ -317,7 +310,7 @@
   memcpy(myfoo.a, "0123456789", sizeof(myfoo.a)); // unterminated string
   myfoo.b[0] = '\0';
   size_t n = atoi("10"); // avoid compiler optimizations
-  ASSERT_EXIT(strncat(myfoo.b, myfoo.a, n), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strncat(myfoo.b, myfoo.a, n));
 }
 
 #ifndef __clang__
@@ -328,7 +321,7 @@
   strcpy(src, "0123456789");
   foo myfoo;
   myfoo.a[0] = '\0';
-  ASSERT_EXIT(strcat(myfoo.a, src), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strcat(myfoo.a, src));
 }
 #endif
 
@@ -336,21 +329,21 @@
   foo myfoo;
   memcpy(myfoo.a, "0123456789", sizeof(myfoo.a)); // unterminated string
   myfoo.b[0] = '\0';
-  ASSERT_EXIT(strcat(myfoo.b, myfoo.a), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strcat(myfoo.b, myfoo.a));
 }
 
 TEST_F(DEATHTEST, snprintf_fortified2) {
   foo myfoo;
   strcpy(myfoo.a, "012345678");
   size_t n = strlen(myfoo.a) + 2;
-  ASSERT_EXIT(snprintf(myfoo.b, n, "a%s", myfoo.a), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(snprintf(myfoo.b, n, "a%s", myfoo.a));
 }
 
 TEST_F(DEATHTEST, bzero_fortified2) {
   foo myfoo;
   memcpy(myfoo.b, "0123456789", sizeof(myfoo.b));
   size_t n = atoi("11");
-  ASSERT_EXIT(bzero(myfoo.b, n), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(bzero(myfoo.b, n));
 }
 
 #endif /* defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE=2 */
@@ -360,7 +353,7 @@
 #if defined(__BIONIC__)
   char buf[10];
   char *orig = strdup("0123456789");
-  ASSERT_EXIT(strcpy(buf, orig), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strcpy(buf, orig));
   free(orig);
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -372,7 +365,7 @@
 #if defined(__BIONIC__)
   char buf[0];
   char *orig = strdup("");
-  ASSERT_EXIT(strcpy(buf, orig), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strcpy(buf, orig));
   free(orig);
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -384,7 +377,7 @@
 #if defined(__BIONIC__)
   char buf[0];
   char *orig = strdup("1");
-  ASSERT_EXIT(strcpy(buf, orig), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strcpy(buf, orig));
   free(orig);
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -396,7 +389,7 @@
 #if defined(__BIONIC__)
   char buf[1];
   char *orig = strdup("12");
-  ASSERT_EXIT(strcpy(buf, orig), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strcpy(buf, orig));
   free(orig);
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
@@ -407,7 +400,7 @@
 #if defined(__BIONIC__)
   char buf[10];
   memcpy(buf, "0123456789", sizeof(buf));
-  ASSERT_EXIT(printf("%zd", strlen(buf)), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(printf("%zd", strlen(buf)));
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif // __BIONIC__
@@ -417,7 +410,7 @@
 #if defined(__BIONIC__)
   char buf[10];
   memcpy(buf, "0123456789", sizeof(buf));
-  ASSERT_EXIT(printf("%s", strchr(buf, 'a')), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(printf("%s", strchr(buf, 'a')));
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif // __BIONIC__
@@ -427,7 +420,7 @@
 #if defined(__BIONIC__)
   char buf[10];
   memcpy(buf, "0123456789", sizeof(buf));
-  ASSERT_EXIT(printf("%s", strrchr(buf, 'a')), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(printf("%s", strrchr(buf, 'a')));
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif // __BIONIC__
@@ -439,7 +432,7 @@
   char bufb[10];
   strcpy(bufa, "01234567890123");
   size_t n = strlen(bufa);
-  ASSERT_EXIT(strlcpy(bufb, bufa, n), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strlcpy(bufb, bufa, n));
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif // __BIONIC__
@@ -452,7 +445,7 @@
   bufb[0] = '\0';
   strcpy(bufa, "01234567890123");
   size_t n = strlen(bufa);
-  ASSERT_EXIT(strlcat(bufb, bufa, n), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strlcat(bufb, bufa, n));
 #else // __BIONIC__
   GTEST_LOG_(INFO) << "This test does nothing.\n";
 #endif // __BIONIC__
@@ -462,7 +455,7 @@
   char buf[10];
   char source_buf[15];
   memcpy(source_buf, "12345678901234", 15);
-  ASSERT_EXIT(sprintf(buf, "%s", source_buf), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(sprintf(buf, "%s", source_buf));
 }
 
 #ifndef __clang__
@@ -472,14 +465,14 @@
   char* buf = (char *) malloc(10);
   char source_buf[11];
   memcpy(source_buf, "1234567890", 11);
-  ASSERT_EXIT(sprintf(buf, "%s", source_buf), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(sprintf(buf, "%s", source_buf));
   free(buf);
 }
 #endif
 
 TEST_F(DEATHTEST, sprintf2_fortified) {
   char buf[5];
-  ASSERT_EXIT(sprintf(buf, "aaaaa"), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(sprintf(buf, "aaaaa"));
 }
 
 static int vsprintf_helper(const char *fmt, ...) {
@@ -494,11 +487,11 @@
 }
 
 TEST_F(DEATHTEST, vsprintf_fortified) {
-  ASSERT_EXIT(vsprintf_helper("%s", "0123456789"), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(vsprintf_helper("%s", "0123456789"));
 }
 
 TEST_F(DEATHTEST, vsprintf2_fortified) {
-  ASSERT_EXIT(vsprintf_helper("0123456789"), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(vsprintf_helper("0123456789"));
 }
 
 static int vsnprintf_helper(const char *fmt, ...) {
@@ -514,25 +507,25 @@
 }
 
 TEST_F(DEATHTEST, vsnprintf_fortified) {
-  ASSERT_EXIT(vsnprintf_helper("%s", "0123456789"), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(vsnprintf_helper("%s", "0123456789"));
 }
 
 TEST_F(DEATHTEST, vsnprintf2_fortified) {
-  ASSERT_EXIT(vsnprintf_helper("0123456789"), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(vsnprintf_helper("0123456789"));
 }
 
 TEST_F(DEATHTEST, strncat_fortified) {
   char buf[10];
   size_t n = atoi("10"); // avoid compiler optimizations
   strncpy(buf, "012345678", n);
-  ASSERT_EXIT(strncat(buf, "9", n), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strncat(buf, "9", n));
 }
 
 TEST_F(DEATHTEST, strncat2_fortified) {
   char buf[10];
   buf[0] = '\0';
   size_t n = atoi("10"); // avoid compiler optimizations
-  ASSERT_EXIT(strncat(buf, "0123456789", n), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strncat(buf, "0123456789", n));
 }
 
 TEST_F(DEATHTEST, strcat_fortified) {
@@ -540,14 +533,14 @@
   strcpy(src, "0123456789");
   char buf[10];
   buf[0] = '\0';
-  ASSERT_EXIT(strcat(buf, src), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strcat(buf, src));
 }
 
 TEST_F(DEATHTEST, memmove_fortified) {
   char buf[20];
   strcpy(buf, "0123456789");
   size_t n = atoi("10");
-  ASSERT_EXIT(memmove(buf + 11, buf, n), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(memmove(buf + 11, buf, n));
 }
 
 TEST_F(DEATHTEST, memcpy_fortified) {
@@ -555,7 +548,7 @@
   char bufb[10];
   strcpy(bufa, "012345678");
   size_t n = atoi("11");
-  ASSERT_EXIT(memcpy(bufb, bufa, n), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(memcpy(bufb, bufa, n));
 }
 
 TEST_F(DEATHTEST, stpncpy_fortified) {
@@ -563,14 +556,14 @@
   char bufb[10];
   strcpy(bufa, "01234567890123");
   size_t n = strlen(bufa);
-  ASSERT_EXIT(stpncpy(bufb, bufa, n), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(stpncpy(bufb, bufa, n));
 }
 
 TEST_F(DEATHTEST, stpncpy2_fortified) {
   char dest[11];
   char src[10];
   memcpy(src, "0123456789", sizeof(src)); // src is not null terminated
-  ASSERT_EXIT(stpncpy(dest, src, sizeof(dest)), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(stpncpy(dest, src, sizeof(dest)));
 }
 
 TEST_F(DEATHTEST, strncpy_fortified) {
@@ -578,7 +571,7 @@
   char bufb[10];
   strcpy(bufa, "01234567890123");
   size_t n = strlen(bufa);
-  ASSERT_EXIT(strncpy(bufb, bufa, n), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strncpy(bufb, bufa, n));
 }
 
 
@@ -586,7 +579,7 @@
   char dest[11];
   char src[10];
   memcpy(src, "0123456789", sizeof(src)); // src is not null terminated
-  ASSERT_EXIT(strncpy(dest, src, sizeof(dest)), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(strncpy(dest, src, sizeof(dest)));
 }
 
 TEST_F(DEATHTEST, snprintf_fortified) {
@@ -594,55 +587,46 @@
   char bufb[10];
   strcpy(bufa, "0123456789");
   size_t n = strlen(bufa) + 1;
-  ASSERT_EXIT(snprintf(bufb, n, "%s", bufa), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(snprintf(bufb, n, "%s", bufa));
 }
 
 TEST_F(DEATHTEST, bzero_fortified) {
   char buf[10];
   memcpy(buf, "0123456789", sizeof(buf));
   size_t n = atoi("11");
-  ASSERT_EXIT(bzero(buf, n), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(bzero(buf, n));
 }
 
 TEST_F(DEATHTEST, umask_fortified) {
   mode_t mask = atoi("1023");  // 01777 in octal
-  ASSERT_EXIT(umask(mask), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(umask(mask));
 }
 
 TEST_F(DEATHTEST, recv_fortified) {
   size_t data_len = atoi("11"); // suppress compiler optimizations
   char buf[10];
-  ASSERT_EXIT(recv(0, buf, data_len, 0), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(recv(0, buf, data_len, 0));
 }
 
 TEST_F(DEATHTEST, FD_ISSET_fortified) {
 #if defined(__BIONIC__) // glibc catches this at compile-time.
   fd_set set;
   memset(&set, 0, sizeof(set));
-  ASSERT_EXIT(FD_ISSET(-1, &set), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(FD_ISSET(-1, &set));
 #endif
 }
 
 TEST_F(DEATHTEST, FD_ISSET_2_fortified) {
   char buf[1];
   fd_set* set = (fd_set*) buf;
-  ASSERT_EXIT(FD_ISSET(0, set), testing::KilledBySignal(SIGABRT), "");
-}
-
-// gtest's ASSERT_EXIT needs a valid expression, but glibc has a do-while macro.
-static void FD_ZERO_function(fd_set* s) { FD_ZERO(s); }
-
-TEST_F(DEATHTEST, FD_ZERO_fortified) {
-  char buf[1];
-  fd_set* set = (fd_set*) buf;
-  ASSERT_EXIT(FD_ZERO_function(set), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(FD_ISSET(0, set));
 }
 
 TEST_F(DEATHTEST, read_fortified) {
   char buf[1];
   size_t ct = atoi("2"); // prevent optimizations
   int fd = open("/dev/null", O_RDONLY);
-  ASSERT_EXIT(read(fd, buf, ct), testing::KilledBySignal(SIGABRT), "");
+  ASSERT_FORTIFY(read(fd, buf, ct));
   close(fd);
 }
 
@@ -950,3 +934,15 @@
   sprintf(BUF_AND_CONTENTS(buf));
   EXPECT_STREQ(CONTENTS, buf);
 }
+
+TEST_F(DEATHTEST, poll_fortified) {
+  nfds_t fd_count = atoi("2"); // suppress compiler optimizations
+  pollfd buf[1] = {{0, POLLIN, 0}};
+  ASSERT_FORTIFY(poll(buf, fd_count, -1));
+}
+
+TEST_F(DEATHTEST, ppoll_fortified) {
+  nfds_t fd_count = atoi("2"); // suppress compiler optimizations
+  pollfd buf[1] = {{0, POLLIN, 0}};
+  ASSERT_FORTIFY(ppoll(buf, fd_count, NULL, NULL));
+}
diff --git a/tests/sys_stat_test.cpp b/tests/sys_stat_test.cpp
index e465774..7bbb7c6 100644
--- a/tests/sys_stat_test.cpp
+++ b/tests/sys_stat_test.cpp
@@ -95,3 +95,127 @@
   ASSERT_EQ(0, fstat64(fd, &sb));
   close(fd);
 }
+
+TEST(sys_stat, fchmodat_EFAULT_file) {
+  ASSERT_EQ(-1, fchmodat(AT_FDCWD, (char *) 0x1, 0751, 0));
+  ASSERT_EQ(EFAULT, errno);
+}
+
+TEST(sys_stat, fchmodat_AT_SYMLINK_NOFOLLOW_EFAULT_file) {
+  ASSERT_EQ(-1, fchmodat(AT_FDCWD, (char *) 0x1, 0751, AT_SYMLINK_NOFOLLOW));
+#if defined(__BIONIC__)
+  ASSERT_EQ(EFAULT, errno);
+#else
+  // glibc 2.19 does not implement AT_SYMLINK_NOFOLLOW and always
+  // returns ENOTSUP
+  ASSERT_EQ(ENOTSUP, errno);
+#endif
+}
+
+TEST(sys_stat, fchmodat_bad_flags) {
+  ASSERT_EQ(-1, fchmodat(AT_FDCWD, "/blah", 0751, ~AT_SYMLINK_NOFOLLOW));
+  ASSERT_EQ(EINVAL, errno);
+}
+
+TEST(sys_stat, fchmodat_bad_flags_ALL) {
+  ASSERT_EQ(-1, fchmodat(AT_FDCWD, "/blah", 0751, ~0));
+  ASSERT_EQ(EINVAL, errno);
+}
+
+TEST(sys_stat, fchmodat_nonexistant_file) {
+  ASSERT_EQ(-1, fchmodat(AT_FDCWD, "/blah", 0751, 0));
+  ASSERT_EQ(ENOENT, errno);
+}
+
+TEST(sys_stat, fchmodat_AT_SYMLINK_NOFOLLOW_nonexistant_file) {
+  ASSERT_EQ(-1, fchmodat(AT_FDCWD, "/blah", 0751, AT_SYMLINK_NOFOLLOW));
+#if defined(__BIONIC__)
+  ASSERT_EQ(ENOENT, errno);
+#else
+  // glibc 2.19 does not implement AT_SYMLINK_NOFOLLOW and always
+  // returns ENOTSUP
+  ASSERT_EQ(ENOTSUP, errno);
+#endif
+}
+
+TEST(sys_stat, fchmodat_file) {
+  TemporaryFile tf;
+  struct stat sb;
+
+  ASSERT_EQ(0, fchmodat(AT_FDCWD, tf.filename, 0751, 0));
+  ASSERT_EQ(0, fstat(tf.fd, &sb));
+  ASSERT_TRUE(0751 == (sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO)));
+}
+
+TEST(sys_stat, fchmodat_AT_SYMLINK_NOFOLLOW_file) {
+  TemporaryFile tf;
+  errno = 0;
+  int result = fchmodat(AT_FDCWD, tf.filename, 0751, AT_SYMLINK_NOFOLLOW);
+
+#if defined(__BIONIC__)
+  struct stat sb;
+  ASSERT_EQ(0, result);
+  ASSERT_EQ(0, errno);
+  ASSERT_EQ(0, fstat(tf.fd, &sb));
+  ASSERT_TRUE(0751 == (sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO)));
+#else
+  // glibc 2.19 does not implement AT_SYMLINK_NOFOLLOW and always
+  // returns ENOTSUP
+  ASSERT_EQ(-1, result);
+  ASSERT_EQ(ENOTSUP, errno);
+#endif
+}
+
+TEST(sys_stat, fchmodat_symlink) {
+  TemporaryFile tf;
+  char linkname[255];
+  struct stat sb;
+
+  snprintf(linkname, sizeof(linkname), "%s.link", tf.filename);
+
+  ASSERT_EQ(0, symlink(tf.filename, linkname));
+  ASSERT_EQ(0, fchmodat(AT_FDCWD, linkname, 0751, 0));
+  ASSERT_EQ(0, fstat(tf.fd, &sb));
+  ASSERT_TRUE(0751 == (sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO)));
+  unlink(linkname);
+}
+
+TEST(sys_stat, fchmodat_dangling_symlink) {
+  TemporaryFile tf;
+  char linkname[255];
+  char target[255];
+
+  snprintf(linkname, sizeof(linkname), "%s.link", tf.filename);
+  snprintf(target, sizeof(target), "%s.doesnotexist", tf.filename);
+
+  ASSERT_EQ(0, symlink(target, linkname));
+  ASSERT_EQ(-1, fchmodat(AT_FDCWD, linkname, 0751, 0));
+  ASSERT_EQ(ENOENT, errno);
+  unlink(linkname);
+}
+
+TEST(sys_stat, fchmodat_AT_SYMLINK_NOFOLLOW_with_symlink) {
+  TemporaryFile tf;
+  char linkname[255];
+
+  snprintf(linkname, sizeof(linkname), "%s.link", tf.filename);
+
+  ASSERT_EQ(0, symlink(tf.filename, linkname));
+  ASSERT_EQ(-1, fchmodat(AT_FDCWD, linkname, 0751, AT_SYMLINK_NOFOLLOW));
+  ASSERT_EQ(ENOTSUP, errno);
+  unlink(linkname);
+}
+
+TEST(sys_stat, fchmodat_AT_SYMLINK_NOFOLLOW_with_dangling_symlink) {
+  TemporaryFile tf;
+  char linkname[255];
+  char target[255];
+
+  snprintf(linkname, sizeof(linkname), "%s.link", tf.filename);
+  snprintf(target, sizeof(target), "%s.doesnotexist", tf.filename);
+
+  ASSERT_EQ(0, symlink(target, linkname));
+  ASSERT_EQ(-1, fchmodat(AT_FDCWD, linkname, 0751, AT_SYMLINK_NOFOLLOW));
+  ASSERT_EQ(ENOTSUP, errno);
+  unlink(linkname);
+}