drivers/mkrd.c: Forgot to add file in last commit.
This commit is contained in:
Gregory Nutt
parent
be325924fb
commit
03bf18d097
49
TODO
49
TODO
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@ -37,7 +37,7 @@ apps/ and other Add-Ons:
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(1) System libraries apps/system (apps/system)
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(1) Modbus (apps/modbus)
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(1) Pascal add-on (pcode/)
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(4) Other Applications & Tests (apps/examples/)
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(5) Other Applications & Tests (apps/examples/)
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o Task/Scheduler (sched/)
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^^^^^^^^^^^^^^^^^^^^^^^
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@ -927,20 +927,21 @@ o Kernel/Protected Build
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^^^^^^^^^^^^^^^^^^^^^^
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Title: NSH PARTITIONING.
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Description: There are issues with several NSH commands in the NuttX kernel
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and protected build modes (where NuttX is built as a monolithic
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kernel and user code must trap into the protected kernel via
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syscalls). The current NSH implementation has several commands
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that call directly into kernel internal functions for which
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there is no syscall available. The commands cause link failures
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in the kernel/protected build mode and must currently be disabled.
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Here are known problems that must be fixed:
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Description: There are issues with NSH in the NuttX kernel and protected
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build modes (where NuttX is built as a monolithic kernel and
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user code must trap into the protected kernel via syscalls).
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This can cause link failures in the kernel/protected build
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mode and must currently be disabled.
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COMMAND KERNEL INTERFACE(s)
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-------- ----------------------------------------------
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mkrd ramdisk_register()
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Many such issues have been fixed. Here are the known
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remaingin problems that must be fixed:
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See http://www.nuttx.org/doku.php?id=wiki:howtos:protected-ramdisk
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- apps/nshlib/nsh_romfsetc.c: The function nsh_romfsetc()
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calles romdisk_register() directly in order to register
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the application ROMFS file system. This logic needs to
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be redesigned. The best solution would simply to be to
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to create the romdisk in the board start-up logic. This
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would, however, have impacts to NuttX users.
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Status: Open
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Priority: Medium/High -- the kernel build configuration is not fully fielded
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@ -2734,6 +2735,8 @@ o Network Utilities (apps/netutils/)
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o NuttShell (NSH) (apps/nshlib)
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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See some NHS issues under "Kernel/Protected Build" as well.
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Title: IFCONFIG AND MULTIPLE NETWORK INTERFACES
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Description: The ifconfig command will not behave correctly if an interface
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is provided and there are multiple interfaces. It should only
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@ -2840,3 +2843,23 @@ o Other Applications & Tests (apps/examples/)
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the artifact is larger.
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Status: Open
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Priority: Medium.
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Title: ILLEGAL CALLS TO romdisk_register()
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Desription: Several examples (and other things under apps/) make illegal
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calls to romdisk_register(). This both violates the portable
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POSIX OS interface and makes these applications un-usable in
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PROTECTED and KERNEL build modes.
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Non-compliant examples include:
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examples/bastest, examples/elf, examples/module,
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examples/nxflat, examples/posix_spawn, examples/romfs,
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examples/sotest, examples/thttpd, examples/unionfs
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Other non-compliant logic:
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graphics/traveler/trv_romfs.c, nshlib/nsh_romfsetc.c
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The NSH issue is listed under"Kernel/Protected Build" as well.
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Status: Open
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Priority: Medium.
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@ -0,0 +1,102 @@
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/****************************************************************************
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* drivers/mkrd.c
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*
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* Copyright (C) 2019 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/kmalloc.h>
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#include <nuttx/drivers/ramdisk.h>
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#ifdef CONFIG_FS_WRITABLE
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: mkrd
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*
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* Description:
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* This is a wrapper function around ramdisk_register. It combines the
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* necessary operations to create a RAM disk into a single callable
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* function. Memory for the RAM disk is allocated, appropriated, from
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* the kernel heap (in build modes where there is a distinct kernel heap).
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*
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* Input Parameters:
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* minor: Selects suffix of device named /dev/ramN, N={1,2,3...}
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* nsectors: Number of sectors on device
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* sectize: The size of one sector
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* rdflags: See RDFLAG_* definitions. Typically
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* RDFLAG_WRENABLED | RDFLAG_FUNLINK
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*
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* Returned Value:
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* Zero on success; a negated errno value on failure.
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*
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****************************************************************************/
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int mkrd(int minor, uint32_t nsectors, uint16_t sectsize, uint8_t rdflags)
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{
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FAR uint8_t *buffer;
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int ret;
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/* Allocate the memory backing up the ramdisk from the kernel heap */
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buffer = (FAR uint8_t *)kmm_malloc(sectsize * nsectors);
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if (buffer == NULL)
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{
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return -ENOMEM;
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}
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#ifdef CONFIG_DEBUG_INFO
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memset(buffer, 0, sectsize * nsectors);
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#endif
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finfo("RAMDISK at %p\n", buffer);
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/* Then register the ramdisk */
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ret = ramdisk_register(minor, buffer, nsectors, sectsize, rdflags);
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if (ret < 0)
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{
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ferr("ERROR: ramdisk_register() failed: %d\n", ret);
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free(buffer);
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}
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return ret;
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}
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#endif /* CONFIG_FS_WRITABLE */
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