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authorSebastian Huber <sebastian.huber@embedded-brains.de>2013-12-16 13:44:13 +0100
committerSebastian Huber <sebastian.huber@embedded-brains.de>2013-12-20 10:31:53 +0100
commit2f68778f08471fb7f13a8634ebb48c6db13c0f69 (patch)
treeeae0deea88cc0d81052f8497a668dfaeecd6de40 /cpukit/libfs/src/nfsclient/src/nfs.c
parentlibcsupport: Add and use rtems_libio_iovec_eval() (diff)
downloadrtems-2f68778f08471fb7f13a8634ebb48c6db13c0f69.tar.bz2
Filesystem: Add readv/writev handlers
The readv() and writev() support was implemented in terms of multiple calls to the read and write handlers. This imposes a problem on device files which use an IO vector as single request entity. For example a low-level network device (e.g. BPF(4)) may use an IO vector to create one frame from multiple protocol layers each with its own IO vector entry.
Diffstat (limited to 'cpukit/libfs/src/nfsclient/src/nfs.c')
-rw-r--r--cpukit/libfs/src/nfsclient/src/nfs.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/cpukit/libfs/src/nfsclient/src/nfs.c b/cpukit/libfs/src/nfsclient/src/nfs.c
index 99e34d5ac7..c2495228ef 100644
--- a/cpukit/libfs/src/nfsclient/src/nfs.c
+++ b/cpukit/libfs/src/nfsclient/src/nfs.c
@@ -2869,7 +2869,9 @@ struct _rtems_filesystem_file_handlers_r nfs_file_file_handlers = {
.ftruncate_h = nfs_file_ftruncate,
.fsync_h = rtems_filesystem_default_fsync_or_fdatasync,
.fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
- .fcntl_h = rtems_filesystem_default_fcntl
+ .fcntl_h = rtems_filesystem_default_fcntl,
+ .readv_h = rtems_filesystem_default_readv,
+ .writev_h = rtems_filesystem_default_writev
};
/* the directory handlers table */
@@ -2885,7 +2887,9 @@ struct _rtems_filesystem_file_handlers_r nfs_dir_file_handlers = {
.ftruncate_h = rtems_filesystem_default_ftruncate_directory,
.fsync_h = rtems_filesystem_default_fsync_or_fdatasync,
.fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
- .fcntl_h = rtems_filesystem_default_fcntl
+ .fcntl_h = rtems_filesystem_default_fcntl,
+ .readv_h = rtems_filesystem_default_readv,
+ .writev_h = rtems_filesystem_default_writev
};
/* the link handlers table */
@@ -2901,7 +2905,9 @@ struct _rtems_filesystem_file_handlers_r nfs_link_file_handlers = {
.ftruncate_h = rtems_filesystem_default_ftruncate,
.fsync_h = rtems_filesystem_default_fsync_or_fdatasync,
.fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
- .fcntl_h = rtems_filesystem_default_fcntl
+ .fcntl_h = rtems_filesystem_default_fcntl,
+ .readv_h = rtems_filesystem_default_readv,
+ .writev_h = rtems_filesystem_default_writev
};
/* we need a dummy driver entry table to get a