android mknod mtd
我们知道该命令是产生一个特殊文件的，我的问题是它是如何对应pv/或PP的? 楼下的怎么使用啊，能否详细点？ [ 本帖最后由 Angelsliu 于 2008-11-5 17:04 编辑 ]
http://www.linux-mtd.infradead.org/faq/general.html Unix traditionally only knew block devices and character devices. Character devices were things like keyboards or mice, that you could read current data from, but couldn't be seek-ed and didn't have a size. Block devices had a fixed size and could be seek-ed. They also happened to be organized in blocks of multiple bytes, usually 512. ...
我在系统里面键入cat /proc/mtd能看到如下信息 dev: size erasesize name mtd0: 02000000 00040000 "NOR flash on EDB9315" mtd1: 00040000 00040000 "RedBoot" mtd2: 001c0000 00040000 "zImage" mtd3: 00800000 00040000 "ramdisk" mtd4: 01580000 00040000 "app" mtd5: 00001000 00040000 "RedBoot config" mtd6: 00040000 00040000 "FIS directory" 这些分区是redboot下建立的。我想在系统启动后访问mtd4，也就是app分区...
在kernel.2.4.26中的cfi_cmdset_0002.c文件中 static int cfi_amdstd_write_buffers (struct mtd_info *mtd, loff_t to , size_t len, size_t *retlen, const u_char *buf) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; int wbufsize = CFIDEV_INTERLEAVE << cfi->cfiq->MaxBufWriteSize;//根据芯片决定buf大小 int ret = 0; int chipnum; unsigned long ofs; /* code derived from...
mknod ,mkfifo 有何区别， 还有就是mknod的主要作用是什么？在建立设备文件，还有什么？ 在建立设备文件时，主设备，次设备怎么确定？能给个详细的例子吗？谢谢
after install freebsd5.1 with vmware,I didn't found ttyS0 in /dev dir---I have added a physical serial port to freebsd before install , so ,I try to mknod,but failed,anybody can help? #mknod ttyS0 c 4 64 mknod: ttyS0: No such file or dir thanks.
由于在使用mknod 创建的时候少输入一个字符，导致vgcreate 的时候出错，请各位大侠帮忙怎么才能修改 # mkdir /dev/zxinvg # mknod /dev/zxinvg/group c 64 0x01000－－－－－输入错误，少了一个0 # ls -l /dev/*/group crw-r----- 1 root sys 64 0x000000 Apr 17 09:22 /dev/vg00/group crw-rw-rw- 1 root sys 64 0x001000 Aug 28 19:13 /dev/zxinvg/group # pvcreate /dev/rdsk/c4t0d0 Physical...
遇到一个问题，两台unix机器 A: HP-UX B.11.11 U 9000/800 9000/800/L3000-7x B: HP-UX B.11.00 U 9000/800 9000/800/L2000-44 A机器不能是否mknod asdf p命令创建管道 B机器却可以 请问：是否有权限要求啊？还是有目录的要求(即某种类型的文件系统或裸设备不能使用管道) 两台机器上运行man mknod都有信息表名两台机器上都可以使用mknod啊
