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boards/boardctl.c and libs/libc/builtin: The BINFS file system uses the same builtin library and builtin arrays as does NSH. The builtin arrays are simple name-value pairs that map builtin function names with the user-space entry point. In the FLAT build, the builtin arrays are available everywhere via the backdoor left open by the FLAT address space. In the PROTECTED build, however, the kernel must maintain its own reference to the user-space builtin array. This commits adds those kernel globals and a new boardctl(BOARDIOC_BUILTINS) that can be used by applications to the provide the builtin list reference to the kernel.

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This commit is contained in:
Gregory Nutt
2019-08-25 16:58:43 -06:00
parent decd07725f
commit f751aff7fe
6 changed files with 224 additions and 15 deletions
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include/sys/boardctl.h
+38 -7
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@@ -111,6 +111,25 @@
* CONFIGURATION: CONFIG_BOARDCTL_OS_SYMTAB
* DEPENDENCIES: None
*
* CMD: BOARDIOC_BUILTINS
* DESCRIPTION: Provide the user-space list of built-in applications for
* use by BINFS in protected mode. Normally this is small
* set of globals provided by user-space logic. It provides
* name-value pairs for associating built-in application
* names with user-space entry point addresses. These
* globals are only needed for use by BINFS which executes
* built-in applications from kernel-space in PROTECTED mode.
* In the FLAT build, the user space globals are readily
* available. (BINFS is not supportable in KERNEL mode since
* user-space address have no general meaning that
* configuration).
* ARG: A pointer to an instance of struct boardioc_builtin_s
* CONFIGURATION: This BOARDIOC command is always available when
* CONFIG_BUILTIN is enabled, but does nothing unless
* CONFIG_BUILD_PROTECTED and CONFIG_FS_BINFS are also
* selected.
* DEPENDENCIES: None
*
* CMD: BOARDIOC_USBDEV_CONTROL
* DESCRIPTION: Manage USB device classes
* ARG: A pointer to an instance of struct boardioc_usbdev_ctrl_s
@@ -163,12 +182,13 @@
#define BOARDIOC_UNIQUEID _BOARDIOC(0x0005)
#define BOARDIOC_APP_SYMTAB _BOARDIOC(0x0006)
#define BOARDIOC_OS_SYMTAB _BOARDIOC(0x0007)
#define BOARDIOC_USBDEV_CONTROL _BOARDIOC(0x0008)
#define BOARDIOC_NX_START _BOARDIOC(0x0009)
#define BOARDIOC_VNC_START _BOARDIOC(0x000a)
#define BOARDIOC_NXTERM _BOARDIOC(0x000b)
#define BOARDIOC_NXTERM_IOCTL _BOARDIOC(0x000c)
#define BOARDIOC_TESTSET _BOARDIOC(0x000d)
#define BOARDIOC_BUILTINS _BOARDIOC(0x0008)
#define BOARDIOC_USBDEV_CONTROL _BOARDIOC(0x0009)
#define BOARDIOC_NX_START _BOARDIOC(0x000a)
#define BOARDIOC_VNC_START _BOARDIOC(0x000b)
#define BOARDIOC_NXTERM _BOARDIOC(0x000c)
#define BOARDIOC_NXTERM_IOCTL _BOARDIOC(0x000d)
#define BOARDIOC_TESTSET _BOARDIOC(0x000e)
/* If CONFIG_BOARDCTL_IOCTL=y, then board-specific commands will be support.
* In this case, all commands not recognized by boardctl() will be forwarded
@@ -190,13 +210,24 @@
* required.
*/
struct symtab_s; /* Forward reference */
struct symtab_s; /* Forward reference */
struct boardioc_symtab_s
{
FAR struct symtab_s *symtab;
int nsymbols;
};
#ifdef CONFIG_BUILTIN
/* Arguments passed with the BOARDIOC_BUILTIN command */
struct builtin_s; /* Forward reference */
struct boardioc_builtin_s
{
FAR char * const *builtins;
int count;
};
#endif
#ifdef CONFIG_BOARDCTL_USBDEVCTRL
/* This structure provides the argument BOARDIOC_USBDEV_CONTROL and
* describes which device should be controlled and what should be