857158451b
1.Remove void cast for function because many place ignore the returned value witout cast 2.Replace void cast for variable with UNUSED macro Change-Id: Ie644129a563244a6397036789c4c3ea83c4e9b09 Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
460 lines
14 KiB
C
460 lines
14 KiB
C
/****************************************************************************
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* examples/posix_spawn/spawn_main.c
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*
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* Copyright (C) 2013, 2018 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/compiler.h>
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#include <sys/mount.h>
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#include <sys/boardctl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <spawn.h>
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#include <debug.h>
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#include <errno.h>
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#include <nuttx/drivers/ramdisk.h>
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#include <nuttx/symtab.h>
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#include "filesystem/romfs.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Check configuration. This is not all of the configuration settings that
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* are required -- only the more obvious.
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*/
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#ifdef CONFIG_BINFMT_DISABLE
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# error "The binary loader is disabled (CONFIG_BINFMT_DISABLE)!"
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#endif
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#ifndef CONFIG_ELF
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# error "You must select CONFIG_ELF in your configuration file"
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#endif
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#ifndef CONFIG_FS_ROMFS
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# error "You must select CONFIG_FS_ROMFS in your configuration file"
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#endif
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#ifdef CONFIG_DISABLE_MOUNTPOINT
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# error "You must not disable mountpoints via CONFIG_DISABLE_MOUNTPOINT in your configuration file"
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#endif
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#ifdef CONFIG_BINFMT_DISABLE
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# error "You must not disable loadable modules via CONFIG_BINFMT_DISABLE in your configuration file"
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#endif
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#ifndef CONFIG_LIB_BOARDCTL
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# error "This configuration requires CONFIG_LIB_BOARDCTL"
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#endif
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#ifndef CONFIG_BOARDCTL_APP_SYMTAB
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# error "You must enable the symobol table interface with CONFIG_BOARDCTL_APP_SYMTAB"
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#endif
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/* Describe the ROMFS file system */
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#define SECTORSIZE 512
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#define NSECTORS(b) (((b)+SECTORSIZE-1)/SECTORSIZE)
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#define MOUNTPT "/mnt/romfs"
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#ifndef CONFIG_EXAMPLES_ELF_DEVMINOR
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# define CONFIG_EXAMPLES_ELF_DEVMINOR 0
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#endif
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#ifndef CONFIG_EXAMPLES_ELF_DEVPATH
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# define CONFIG_EXAMPLES_ELF_DEVPATH "/dev/ram0"
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#endif
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/* If CONFIG_DEBUG_FEATURES is enabled, use info/err instead of printf so that the
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* output will be synchronous with the debug output.
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*/
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#ifdef CONFIG_CPP_HAVE_VARARGS
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# ifdef CONFIG_DEBUG_FEATURES
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# define message(format, ...) _info(format, ##__VA_ARGS__)
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# define errmsg(format, ...) _err(format, ##__VA_ARGS__)
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# else
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# define message(format, ...) printf(format, ##__VA_ARGS__)
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# define errmsg(format, ...) fprintf(stderr, format, ##__VA_ARGS__)
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# endif
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#else
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# ifdef CONFIG_DEBUG_FEATURES
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# define message _info
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# define errmsg _err
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# else
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# define message printf
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# define errmsg printf
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# endif
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#endif
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static unsigned int g_mminitial; /* Initial memory usage */
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static unsigned int g_mmstep; /* Memory Usage at beginning of test step */
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static const char delimiter[] =
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"****************************************************************************";
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static const char g_redirect[] = "redirect";
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static const char g_hello[] = "hello";
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static const char g_data[] = "testdata.txt";
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static char fullpath[128];
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static char * const g_argv[4] =
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{ "Argument 1", "Argument 2", "Argument 3", NULL };
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/****************************************************************************
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* Symbols from Auto-Generated Code
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****************************************************************************/
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extern const struct symtab_s g_spawn_exports[];
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extern const int g_spawn_nexports;
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: mm_update
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****************************************************************************/
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static void mm_update(FAR unsigned int *previous, FAR const char *msg)
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{
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struct mallinfo mmcurrent;
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/* Get the current memory usage */
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#ifdef CONFIG_CAN_PASS_STRUCTS
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mmcurrent = mallinfo();
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#else
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mallinfo(&mmcurrent);
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#endif
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/* Show the change from the previous time */
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printf("\nMemory Usage %s:\n", msg);
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printf(" Before: %8u After: %8u Change: %8d\n",
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*previous, mmcurrent.uordblks, (int)mmcurrent.uordblks - (int)*previous);
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/* Set up for the next test */
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*previous = mmcurrent.uordblks;
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}
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/****************************************************************************
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* Name: mm_initmonitor
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****************************************************************************/
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static void mm_initmonitor(void)
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{
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struct mallinfo mmcurrent;
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#ifdef CONFIG_CAN_PASS_STRUCTS
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mmcurrent = mallinfo();
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#else
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mallinfo(&mmcurrent);
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#endif
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g_mminitial = mmcurrent.uordblks;
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g_mmstep = mmcurrent.uordblks;
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printf("Initial memory usage: %d\n", mmcurrent.uordblks);
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}
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/****************************************************************************
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* Name: testheader
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****************************************************************************/
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static inline void testheader(FAR const char *progname)
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{
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message("\n%s\n* Executing %s\n%s\n\n", delimiter, progname, delimiter);
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: spawn_main
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****************************************************************************/
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int main(int argc, FAR char *argv[])
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{
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struct boardioc_symtab_s symdesc;
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posix_spawn_file_actions_t file_actions;
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posix_spawnattr_t attr;
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FAR const char *filepath;
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pid_t pid;
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int ret;
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/* Initialize the memory monitor */
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mm_initmonitor();
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/* Create a ROM disk for the ROMFS filesystem */
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message("Registering romdisk at /dev/ram%d\n", CONFIG_EXAMPLES_ELF_DEVMINOR);
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ret = romdisk_register(CONFIG_EXAMPLES_ELF_DEVMINOR, (FAR uint8_t *)romfs_img,
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NSECTORS(romfs_img_len), SECTORSIZE);
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if (ret < 0)
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{
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errmsg("ERROR: romdisk_register failed: %d\n", ret);
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exit(1);
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}
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mm_update(&g_mmstep, "after romdisk_register");
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/* Mount the file system */
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message("Mounting ROMFS filesystem at target=%s with source=%s\n",
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MOUNTPT, CONFIG_EXAMPLES_ELF_DEVPATH);
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ret = mount(CONFIG_EXAMPLES_ELF_DEVPATH, MOUNTPT, "romfs", MS_RDONLY, NULL);
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if (ret < 0)
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{
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errmsg("ERROR: mount(%s,%s,romfs) failed: %s\n",
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CONFIG_EXAMPLES_ELF_DEVPATH, MOUNTPT, errno);
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}
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mm_update(&g_mmstep, "after mount");
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/* Does the system support the PATH variable? Has the PATH variable
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* already been set? If YES and NO, then set the PATH variable to
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* the ROMFS mountpoint.
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*/
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#if defined(CONFIG_LIB_ENVPATH) && !defined(CONFIG_PATH_INITIAL)
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setenv("PATH", MOUNTPT, 1);
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#endif
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/* Make sure that we are using our symbol tablee */
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symdesc.symtab = (FAR struct symtab_s *)g_spawn_exports; /* Discard 'const' */
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symdesc.nsymbols = g_spawn_nexports;
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boardctl(BOARDIOC_APP_SYMTAB, (uintptr_t)&symdesc);
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/*************************************************************************
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* Case 1: Simple program with arguments
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*************************************************************************/
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/* Output a separator so that we can clearly discriminate the output of
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* this program from the others.
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*/
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testheader(g_hello);
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/* Initialize the attributes file actions structure */
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ret = posix_spawn_file_actions_init(&file_actions);
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if (ret != 0)
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{
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errmsg("ERROR: posix_spawn_file_actions_init failed: %d\n", ret);
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}
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posix_spawn_file_actions_dump(&file_actions);
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ret = posix_spawnattr_init(&attr);
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if (ret != 0)
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{
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errmsg("ERROR: posix_spawnattr_init failed: %d\n", ret);
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}
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posix_spawnattr_dump(&attr);
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mm_update(&g_mmstep, "after file_action/attr init");
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/* If the binary loader does not support the PATH variable, then
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* create the full path to the executable program. Otherwise,
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* use the relative path so that the binary loader will have to
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* search the PATH variable to find the executable.
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*/
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#ifdef CONFIG_LIB_ENVPATH
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filepath = g_hello;
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#else
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snprintf(fullpath, 128, "%s/%s", MOUNTPT, g_hello);
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filepath = fullpath;
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#endif
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/* Execute the program */
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mm_update(&g_mmstep, "before posix_spawn");
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ret = posix_spawn(&pid, filepath, &file_actions, &attr, NULL, (FAR char * const*)&g_argv);
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if (ret != 0)
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{
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errmsg("ERROR: posix_spawn failed: %d\n", ret);
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}
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sleep(4);
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mm_update(&g_mmstep, "after posix_spawn");
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/* Free attributes and file actions */
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ret = posix_spawn_file_actions_destroy(&file_actions);
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if (ret != 0)
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{
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errmsg("ERROR: posix_spawn_file_actions_destroy failed: %d\n", ret);
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}
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posix_spawn_file_actions_dump(&file_actions);
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ret = posix_spawnattr_destroy(&attr);
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if (ret != 0)
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{
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errmsg("ERROR: posix_spawnattr_destroy failed: %d\n", ret);
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}
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posix_spawnattr_dump(&attr);
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mm_update(&g_mmstep, "after file_action/attr destruction");
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/*************************************************************************
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* Case 2: Simple program with redirection of stdin to a file input
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*************************************************************************/
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/* Output a separator so that we can clearly discriminate the output of
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* this program from the others.
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*/
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testheader(g_redirect);
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/* Initialize the attributes file actions structure */
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ret = posix_spawn_file_actions_init(&file_actions);
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if (ret != 0)
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{
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errmsg("ERROR: posix_spawn_file_actions_init failed: %d\n", ret);
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}
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posix_spawn_file_actions_dump(&file_actions);
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ret = posix_spawnattr_init(&attr);
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if (ret != 0)
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{
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errmsg("ERROR: posix_spawnattr_init failed: %d\n", ret);
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}
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posix_spawnattr_dump(&attr);
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mm_update(&g_mmstep, "after file_action/attr init");
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/* Set up to close stdin (0) and open testdata.txt as the program input */
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ret = posix_spawn_file_actions_addclose(&file_actions, 0);
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if (ret != 0)
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{
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errmsg("ERROR: posix_spawn_file_actions_addclose failed: %d\n", ret);
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}
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posix_spawn_file_actions_dump(&file_actions);
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snprintf(fullpath, 128, "%s/%s", MOUNTPT, g_data);
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ret = posix_spawn_file_actions_addopen(&file_actions, 0, fullpath, O_RDONLY, 0644);
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if (ret != 0)
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{
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errmsg("ERROR: posix_spawn_file_actions_addopen failed: %d\n", ret);
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}
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posix_spawn_file_actions_dump(&file_actions);
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mm_update(&g_mmstep, "after adding file_actions");
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/* If the binary loader does not support the PATH variable, then
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* create the full path to the executable program. Otherwise,
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* use the relative path so that the binary loader will have to
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* search the PATH variable to find the executable.
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*/
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#ifdef CONFIG_LIB_ENVPATH
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filepath = g_redirect;
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#else
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snprintf(fullpath, 128, "%s/%s", MOUNTPT, g_redirect);
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filepath = fullpath;
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#endif
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/* Execute the program */
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mm_update(&g_mmstep, "before posix_spawn");
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ret = posix_spawn(&pid, filepath, &file_actions, &attr, NULL, NULL);
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if (ret != 0)
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{
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errmsg("ERROR: posix_spawn failed: %d\n", ret);
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}
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sleep(2);
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mm_update(&g_mmstep, "after posix_spawn");
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/* Free attibutes and file actions */
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ret = posix_spawn_file_actions_destroy(&file_actions);
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if (ret != 0)
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{
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errmsg("ERROR: posix_spawn_file_actions_destroy failed: %d\n", ret);
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}
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posix_spawn_file_actions_dump(&file_actions);
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ret = posix_spawnattr_destroy(&attr);
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if (ret != 0)
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{
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errmsg("ERROR: posix_spawnattr_destroy failed: %d\n", ret);
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}
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posix_spawnattr_dump(&attr);
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mm_update(&g_mmstep, "after file_action/attr destruction");
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/* Clean-up */
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mm_update(&g_mmstep, "End-of-Test");
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return 0;
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}
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