fat_shellcmd.c 文件参考

浏览源代码.

函数
int	osShellCmdFormat (int argc, char **argv)
	SHELLCMD_ENTRY (format_shellcmd, CMD_TYPE_EX, "format", XARGS,(CmdCallBackFunc) osShellCmdFormat)

函数说明

osShellCmdFormat()

int osShellCmdFormat	(	int	argc,
		char **	argv
	)

在文件 fat_shellcmd.c 第 42 行定义.

{
    if (argc < 3) { /* 3, at least 3 params for this shell command. */
        perror("format error");
        PRINTK("Usage  :\n");
        PRINTK("        format <dev_vnodename> <sectors> <option> <label>\n");
        PRINTK("        dev_vnodename : the name of dev\n");
        PRINTK("        sectors       : Size of allocation unit in unit of byte or sector, ");
        PRINTK("0 instead of default size\n");
        PRINTK("        options       : Index of filesystem. 1 for FAT filesystem, ");
        PRINTK("2 for FAT32 filesystem, 7 for any, 8 for erase\n");
        PRINTK("        label         : The volume of device. It will be emptyed when this parameter is null\n");
        PRINTK("Example:\n");
        PRINTK("        format /dev/mmcblk0 128 2\n");
 
        set_errno(EINVAL);
        return 0;
    }
 
    if (argc == 4) { /* 4, if the params count is equal to 4, then do this. */
        /* 3, get the param and check. */
        if (strncmp(argv[3], "NULL", strlen(argv[3])) == 0 || strncmp(argv[3], "null", strlen(argv[3])) == 0) {
            set_label(NULL);
        } else {
            set_label(argv[3]);
        }
    }
        /* 0, 1, 2, get the param and check it. */
    if (format(argv[0], atoi(argv[1]), atoi(argv[2])) == 0) {
        PRINTK("format %s Success \n", argv[0]);
    } else {
        perror("format error");
    }
 
    return 0;
}

函数调用图:

SHELLCMD_ENTRY()

SHELLCMD_ENTRY	(	format_shellcmd	,
		CMD_TYPE_EX	,
		"format"	,
		XARGS	,
		(CmdCallBackFunc)	osShellCmdFormat
	)