posix/mmap: Add support for file handler and MAP_ANON

Added a mmap file handler to struct _rtems_filesystem_file_handlers_r.
Updated each file handler object to support the default mmap handler.
Updated mmap() to call the mmap handler for MAP_SHARED.
Added a mmap file handler for shm

Added support for MAP_ANON in mmap().

Updates #2859

20 files changed, 63 insertions, 0 deletions

diff --git a/cpukit/libfs/Makefile.am b/cpukit/libfs/Makefile.am
index 2a09aaa62d..0985b2ffb4 100644
--- a/cpukit/libfs/Makefile.am
+++ b/cpukit/libfs/Makefile.am
@@ -33,6 +33,7 @@ libdefaultfs_a_SOURCES = \
     src/defaults/default_ftruncate_directory.c \
     src/defaults/default_handlers.c src/defaults/default_ops.c
 libdefaultfs_a_SOURCES += src/defaults/default_kqfilter.c
+libdefaultfs_a_SOURCES += src/defaults/default_mmap.c
 libdefaultfs_a_SOURCES += src/defaults/default_poll.c
 libdefaultfs_a_SOURCES += src/defaults/default_readv.c
 libdefaultfs_a_SOURCES += src/defaults/default_writev.c
diff --git a/cpukit/libfs/src/defaults/default_handlers.c b/cpukit/libfs/src/defaults/default_handlers.c
index 903cddc7f3..3730f6c283 100644
--- a/cpukit/libfs/src/defaults/default_handlers.c
+++ b/cpukit/libfs/src/defaults/default_handlers.c
@@ -34,6 +34,7 @@ const rtems_filesystem_file_handlers_r rtems_filesystem_handlers_default = {
   .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
   .fcntl_h = rtems_filesystem_default_fcntl,
   .kqfilter_h = rtems_filesystem_default_kqfilter,
+  .mmap_h = rtems_filesystem_default_mmap,
   .poll_h = rtems_filesystem_default_poll,
   .readv_h = rtems_filesystem_default_readv,
   .writev_h = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/defaults/default_mmap.c b/cpukit/libfs/src/defaults/default_mmap.c
new file mode 100644
index 0000000000..08534eef31
--- /dev/null
+++ b/cpukit/libfs/src/defaults/default_mmap.c
@@ -0,0 +1,40 @@
+/**
+ * @file
+ *
+ * @brief Default MMAP Handler
+ *
+ * @ingroup LibIOFSHandler
+ */
+
+/*
+ * Copyright (c) 2017 Kevin Kirspel (kirspkt@gmail.com)
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+  #include "config.h"
+#endif
+
+#include <rtems/libio_.h>
+
+int rtems_filesystem_default_mmap(
+  rtems_libio_t  *iop,
+  void          **addr,
+  size_t          len,
+  int             prot,
+  off_t           off
+)
+{
+  rtems_set_errno_and_return_minus_one( ENOTSUP );
+}
+
+int rtems_termios_mmap(
+  rtems_libio_t  *iop,
+  void          **addr,
+  size_t          len,
+  int             prot,
+  off_t           off
+) RTEMS_WEAK_ALIAS( rtems_filesystem_default_mmap );
diff --git a/cpukit/libfs/src/devfs/devfs_init.c b/cpukit/libfs/src/devfs/devfs_init.c
index cb5099cd0c..1e960d2b5a 100644
--- a/cpukit/libfs/src/devfs/devfs_init.c
+++ b/cpukit/libfs/src/devfs/devfs_init.c
@@ -52,6 +52,7 @@ const rtems_filesystem_file_handlers_r devFS_file_handlers = {
   .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
   .fcntl_h = rtems_filesystem_default_fcntl,
   .kqfilter_h = rtems_filesystem_default_kqfilter,
+  .mmap_h = rtems_filesystem_default_mmap,
   .poll_h = rtems_filesystem_default_poll,
   .readv_h = rtems_filesystem_default_readv,
   .writev_h = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/dosfs/msdos_handlers_dir.c b/cpukit/libfs/src/dosfs/msdos_handlers_dir.c
index 1365ca13e3..bc2d8961c9 100644
--- a/cpukit/libfs/src/dosfs/msdos_handlers_dir.c
+++ b/cpukit/libfs/src/dosfs/msdos_handlers_dir.c
@@ -34,6 +34,7 @@ const rtems_filesystem_file_handlers_r msdos_dir_handlers = {
   .fdatasync_h = msdos_sync,
   .fcntl_h = rtems_filesystem_default_fcntl,
   .kqfilter_h = rtems_filesystem_default_kqfilter,
+  .mmap_h = rtems_filesystem_default_mmap,
   .poll_h = rtems_filesystem_default_poll,
   .readv_h = rtems_filesystem_default_readv,
   .writev_h = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/dosfs/msdos_handlers_file.c b/cpukit/libfs/src/dosfs/msdos_handlers_file.c
index 0bea6e15dc..ed72fb6512 100644
--- a/cpukit/libfs/src/dosfs/msdos_handlers_file.c
+++ b/cpukit/libfs/src/dosfs/msdos_handlers_file.c
@@ -34,6 +34,7 @@ const rtems_filesystem_file_handlers_r msdos_file_handlers = {
   .fdatasync_h = msdos_sync,
   .fcntl_h = rtems_filesystem_default_fcntl,
   .kqfilter_h = rtems_filesystem_default_kqfilter,
+  .mmap_h = rtems_filesystem_default_mmap,
   .poll_h = rtems_filesystem_default_poll,
   .readv_h = rtems_filesystem_default_readv,
   .writev_h = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/imfs/imfs_dir_default.c b/cpukit/libfs/src/imfs/imfs_dir_default.c
index b31a50e784..a1fc2439fb 100644
--- a/cpukit/libfs/src/imfs/imfs_dir_default.c
+++ b/cpukit/libfs/src/imfs/imfs_dir_default.c
@@ -130,6 +130,7 @@ static const rtems_filesystem_file_handlers_r IMFS_dir_default_handlers = {
   .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync_success,
   .fcntl_h = rtems_filesystem_default_fcntl,
   .kqfilter_h = rtems_filesystem_default_kqfilter,
+  .mmap_h = rtems_filesystem_default_mmap,
   .poll_h = rtems_filesystem_default_poll,
   .readv_h = rtems_filesystem_default_readv,
   .writev_h = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/imfs/imfs_dir_minimal.c b/cpukit/libfs/src/imfs/imfs_dir_minimal.c
index 3ef5173535..e97468d0d7 100644
--- a/cpukit/libfs/src/imfs/imfs_dir_minimal.c
+++ b/cpukit/libfs/src/imfs/imfs_dir_minimal.c
@@ -32,6 +32,7 @@ static const rtems_filesystem_file_handlers_r IMFS_dir_minimal_handlers = {
   .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync_success,
   .fcntl_h = rtems_filesystem_default_fcntl,
   .kqfilter_h = rtems_filesystem_default_kqfilter,
+  .mmap_h = rtems_filesystem_default_mmap,
   .poll_h = rtems_filesystem_default_poll,
   .readv_h = rtems_filesystem_default_readv,
   .writev_h = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/imfs/imfs_fifo.c b/cpukit/libfs/src/imfs/imfs_fifo.c
index d6c2187055..b97694e38a 100644
--- a/cpukit/libfs/src/imfs/imfs_fifo.c
+++ b/cpukit/libfs/src/imfs/imfs_fifo.c
@@ -127,6 +127,7 @@ static const rtems_filesystem_file_handlers_r IMFS_fifo_handlers = {
   .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
   .fcntl_h = rtems_filesystem_default_fcntl,
   .kqfilter_h = rtems_filesystem_default_kqfilter,
+  .mmap_h = rtems_filesystem_default_mmap,
   .poll_h = rtems_filesystem_default_poll,
   .readv_h = rtems_filesystem_default_readv,
   .writev_h = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/imfs/imfs_handlers_device.c b/cpukit/libfs/src/imfs/imfs_handlers_device.c
index 0a7cb5f722..df9f6fce5b 100644
--- a/cpukit/libfs/src/imfs/imfs_handlers_device.c
+++ b/cpukit/libfs/src/imfs/imfs_handlers_device.c
@@ -45,6 +45,7 @@ static const rtems_filesystem_file_handlers_r IMFS_device_handlers = {
   .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
   .fcntl_h = rtems_filesystem_default_fcntl,
   .kqfilter_h = rtems_filesystem_default_kqfilter,
+  .mmap_h = rtems_filesystem_default_mmap,
   .poll_h = rtems_filesystem_default_poll,
   .readv_h = rtems_filesystem_default_readv,
   .writev_h = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/imfs/imfs_linfile.c b/cpukit/libfs/src/imfs/imfs_linfile.c
index 5840c16d98..57e106d85a 100644
--- a/cpukit/libfs/src/imfs/imfs_linfile.c
+++ b/cpukit/libfs/src/imfs/imfs_linfile.c
@@ -87,6 +87,7 @@ static const rtems_filesystem_file_handlers_r IMFS_linfile_handlers = {
   .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync_success,
   .fcntl_h = rtems_filesystem_default_fcntl,
   .kqfilter_h = rtems_filesystem_default_kqfilter,
+  .mmap_h = rtems_filesystem_default_mmap,
   .poll_h = rtems_filesystem_default_poll,
   .readv_h = rtems_filesystem_default_readv,
   .writev_h = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/imfs/imfs_link.c b/cpukit/libfs/src/imfs/imfs_link.c
index 06794af682..add93e4562 100644
--- a/cpukit/libfs/src/imfs/imfs_link.c
+++ b/cpukit/libfs/src/imfs/imfs_link.c
@@ -93,6 +93,7 @@ static const rtems_filesystem_file_handlers_r IMFS_link_handlers = {
   .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
   .fcntl_h = rtems_filesystem_default_fcntl,
   .kqfilter_h = rtems_filesystem_default_kqfilter,
+  .mmap_h = rtems_filesystem_default_mmap,
   .poll_h = rtems_filesystem_default_poll,
   .readv_h = rtems_filesystem_default_readv,
   .writev_h = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/imfs/imfs_memfile.c b/cpukit/libfs/src/imfs/imfs_memfile.c
index 2b6a49698a..2227bba6af 100644
--- a/cpukit/libfs/src/imfs/imfs_memfile.c
+++ b/cpukit/libfs/src/imfs/imfs_memfile.c
@@ -844,6 +844,7 @@ static const rtems_filesystem_file_handlers_r IMFS_memfile_handlers = {
   .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync_success,
   .fcntl_h = rtems_filesystem_default_fcntl,
   .kqfilter_h = rtems_filesystem_default_kqfilter,
+  .mmap_h = rtems_filesystem_default_mmap,
   .poll_h = rtems_filesystem_default_poll,
   .readv_h = rtems_filesystem_default_readv,
   .writev_h = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/imfs/imfs_symlink.c b/cpukit/libfs/src/imfs/imfs_symlink.c
index 0f0644622b..4358ad6885 100644
--- a/cpukit/libfs/src/imfs/imfs_symlink.c
+++ b/cpukit/libfs/src/imfs/imfs_symlink.c
@@ -95,6 +95,7 @@ static const rtems_filesystem_file_handlers_r IMFS_link_handlers = {
   .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
   .fcntl_h = rtems_filesystem_default_fcntl,
   .kqfilter_h = rtems_filesystem_default_kqfilter,
+  .mmap_h = rtems_filesystem_default_mmap,
   .poll_h = rtems_filesystem_default_poll,
   .readv_h = rtems_filesystem_default_readv,
   .writev_h = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/jffs2/src/fs-rtems.c b/cpukit/libfs/src/jffs2/src/fs-rtems.c
index 8084776659..5e702ce5ec 100644
--- a/cpukit/libfs/src/jffs2/src/fs-rtems.c
+++ b/cpukit/libfs/src/jffs2/src/fs-rtems.c
@@ -606,6 +606,7 @@ static const rtems_filesystem_file_handlers_r rtems_jffs2_directory_handlers = {
 	.fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
 	.fcntl_h = rtems_filesystem_default_fcntl,
 	.kqfilter_h = rtems_filesystem_default_kqfilter,
+	.mmap_h = rtems_filesystem_default_mmap,
 	.poll_h = rtems_filesystem_default_poll,
 	.readv_h = rtems_filesystem_default_readv,
 	.writev_h = rtems_filesystem_default_writev
@@ -748,6 +749,7 @@ static const rtems_filesystem_file_handlers_r rtems_jffs2_file_handlers = {
 	.fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
 	.fcntl_h = rtems_filesystem_default_fcntl,
 	.kqfilter_h = rtems_filesystem_default_kqfilter,
+	.mmap_h = rtems_filesystem_default_mmap,
 	.poll_h = rtems_filesystem_default_poll,
 	.readv_h = rtems_filesystem_default_readv,
 	.writev_h = rtems_filesystem_default_writev
@@ -766,6 +768,7 @@ static const rtems_filesystem_file_handlers_r rtems_jffs2_link_handlers = {
 	.fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
 	.fcntl_h = rtems_filesystem_default_fcntl,
 	.kqfilter_h = rtems_filesystem_default_kqfilter,
+	.mmap_h = rtems_filesystem_default_mmap,
 	.poll_h = rtems_filesystem_default_poll,
 	.readv_h = rtems_filesystem_default_readv,
 	.writev_h = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/nfsclient/src/nfs.c b/cpukit/libfs/src/nfsclient/src/nfs.c
index 5673a248a6..87fef54ac0 100644
--- a/cpukit/libfs/src/nfsclient/src/nfs.c
+++ b/cpukit/libfs/src/nfsclient/src/nfs.c
@@ -2884,6 +2884,7 @@ struct _rtems_filesystem_file_handlers_r nfs_file_file_handlers = {
 	.fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
 	.fcntl_h     = rtems_filesystem_default_fcntl,
 	.kqfilter_h  = rtems_filesystem_default_kqfilter,
+	.mmap_h      = rtems_filesystem_default_mmap,
 	.poll_h      = rtems_filesystem_default_poll,
 	.readv_h     = rtems_filesystem_default_readv,
 	.writev_h    = rtems_filesystem_default_writev
@@ -2904,6 +2905,7 @@ struct _rtems_filesystem_file_handlers_r nfs_dir_file_handlers = {
 	.fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
 	.fcntl_h     = rtems_filesystem_default_fcntl,
 	.kqfilter_h  = rtems_filesystem_default_kqfilter,
+	.mmap_h      = rtems_filesystem_default_mmap,
 	.poll_h      = rtems_filesystem_default_poll,
 	.readv_h     = rtems_filesystem_default_readv,
 	.writev_h    = rtems_filesystem_default_writev
@@ -2924,6 +2926,7 @@ struct _rtems_filesystem_file_handlers_r nfs_link_file_handlers = {
 	.fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
 	.fcntl_h     = rtems_filesystem_default_fcntl,
 	.kqfilter_h  = rtems_filesystem_default_kqfilter,
+	.mmap_h      = rtems_filesystem_default_mmap,
 	.poll_h      = rtems_filesystem_default_poll,
 	.readv_h     = rtems_filesystem_default_readv,
 	.writev_h    = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/rfs/rtems-rfs-rtems-dev.c b/cpukit/libfs/src/rfs/rtems-rfs-rtems-dev.c
index a8ba126f16..3c69eaa30e 100644
--- a/cpukit/libfs/src/rfs/rtems-rfs-rtems-dev.c
+++ b/cpukit/libfs/src/rfs/rtems-rfs-rtems-dev.c
@@ -195,6 +195,7 @@ const rtems_filesystem_file_handlers_r rtems_rfs_rtems_device_handlers = {
   .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
   .fcntl_h     = rtems_filesystem_default_fcntl,
   .kqfilter_h  = rtems_filesystem_default_kqfilter,
+  .mmap_h      = rtems_filesystem_default_mmap,
   .poll_h      = rtems_filesystem_default_poll,
   .readv_h     = rtems_filesystem_default_readv,
   .writev_h    = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/rfs/rtems-rfs-rtems-dir.c b/cpukit/libfs/src/rfs/rtems-rfs-rtems-dir.c
index df0e639dfa..ab4e56f53d 100644
--- a/cpukit/libfs/src/rfs/rtems-rfs-rtems-dir.c
+++ b/cpukit/libfs/src/rfs/rtems-rfs-rtems-dir.c
@@ -164,6 +164,7 @@ const rtems_filesystem_file_handlers_r rtems_rfs_rtems_dir_handlers = {
   .fdatasync_h = rtems_rfs_rtems_fdatasync,
   .fcntl_h     = rtems_filesystem_default_fcntl,
   .kqfilter_h  = rtems_filesystem_default_kqfilter,
+  .mmap_h      = rtems_filesystem_default_mmap,
   .poll_h      = rtems_filesystem_default_poll,
   .readv_h     = rtems_filesystem_default_readv,
   .writev_h    = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/rfs/rtems-rfs-rtems-file.c b/cpukit/libfs/src/rfs/rtems-rfs-rtems-file.c
index 31df78acf1..99782db72b 100644
--- a/cpukit/libfs/src/rfs/rtems-rfs-rtems-file.c
+++ b/cpukit/libfs/src/rfs/rtems-rfs-rtems-file.c
@@ -348,6 +348,7 @@ const rtems_filesystem_file_handlers_r rtems_rfs_rtems_file_handlers = {
   .fdatasync_h = rtems_rfs_rtems_fdatasync,
   .fcntl_h     = rtems_filesystem_default_fcntl,
   .kqfilter_h  = rtems_filesystem_default_kqfilter,
+  .mmap_h      = rtems_filesystem_default_mmap,
   .poll_h      = rtems_filesystem_default_poll,
   .readv_h     = rtems_filesystem_default_readv,
   .writev_h    = rtems_filesystem_default_writev
diff --git a/cpukit/libfs/src/rfs/rtems-rfs-rtems.c b/cpukit/libfs/src/rfs/rtems-rfs-rtems.c
index 5ce526a8ed..45455eb85c 100644
--- a/cpukit/libfs/src/rfs/rtems-rfs-rtems.c
+++ b/cpukit/libfs/src/rfs/rtems-rfs-rtems.c
@@ -701,6 +701,7 @@ const rtems_filesystem_file_handlers_r rtems_rfs_rtems_link_handlers =
   .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
   .fcntl_h     = rtems_filesystem_default_fcntl,
   .kqfilter_h  = rtems_filesystem_default_kqfilter,
+  .mmap_h      = rtems_filesystem_default_mmap,
   .poll_h      = rtems_filesystem_default_poll,
   .readv_h     = rtems_filesystem_default_readv,
   .writev_h    = rtems_filesystem_default_writev