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

8 files changed, 8 insertions, 0 deletions

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