我的openwrt学习笔记（三十三）：Openwrt 之lua 在ubuntu中的测试
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我的openwrt学习笔记（三十三）：Openwrt之lua 在ubuntu中的测试
Lua[1] 是一个小巧的脚本语言。是巴西里约热内卢天主教大学（Pontifical Catholic University of Rio de Janeiro）里的一个研究小组，由Roberto Ierusalimschy、WaldemarCeles和 Luiz Henrique de Figueiredo所组成并于1993年开发。其设计目的是为了嵌入应用程序中，从而为应用程序提供灵活的扩展和定制功能。Lua由标准C编写而成，几乎在所有操作系统和平台上都可以编译，运行。Lua并没有提供强大的库，这是由它的定位决定的。所以Lua不适合作为开发独立应用程序的语言。Lua有一个同时进行的JIT项目，提供在特定平台上的即时编译功能。
编译
linux@ubuntu:~/linux_c/lua/lua-5.1.5$ make linux
cd src && make linux
make[1]: Entering directory `/home/linux/linux_c/lua/lua-5.1.5/src'
make all MYCFLAGS=-DLUA_USE_LINUX MYLIBS="-Wl,-E -ldl -lreadline -lhistory -lncurses"
make[2]: Entering directory `/home/linux/linux_c/lua/lua-5.1.5/src'
gcc -o lua lua.o liblua.a -lm -Wl,-E -ldl -lreadline -lhistory -lncurses
/usr/bin/ld: cannot find -lreadline
/usr/bin/ld: cannot find -lhistory
collect2: ld returned 1 exit status
make[2]: *** [lua] Error 1
make[2]: Leaving directory `/home/linux/linux_c/lua/lua-5.1.5/src'
make[1]: *** [linux] Error 2
make[1]: Leaving directory `/home/linux/linux_c/lua/lua-5.1.5/src'
make: *** [linux] Error 2
linux@ubuntu:~/linux_c/lua/lua-5.1.5$ ldconfig -p ｜ grep readline
/sbin/ldconfig.real: relative path `｜' used to build cache
linux@ubuntu:~/linux_c/lua/lua-5.1.5$sudo apt-get install libreadline5linux@ubuntu:~/linux_c/lua/lua-5.1.5$ sudo apt-get install libreadline-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
libreadline6-dev
The following NEW packages will be installed:
libreadline-dev libreadline6-dev
0 upgraded, 2 newly installed, 0 to remove and 623 not upgraded.
Need to get 250 kB of archives.
After this operation, 637 kB of additional disk space will be used.
Do you want to continue [Y/n]? y
Get:1 http://cn.archive.ubuntu.com/ubuntu/ precise/main libreadline6-dev i386 6.2-8 [249 kB]
Get:2 http://cn.archive.ubuntu.com/ubuntu/ precise/main libreadline-dev i386 6.2-8 [932 B]
Fetched 250 kB in 0s (975 kB/s)
Selecting previously unselected package libreadline6-dev.
(Reading database ... 149096 files and directories currently installed.)
Unpacking libreadline6-dev (from .../libreadline6-dev_6.2-8_i386.deb) ...
Selecting previously unselected package libreadline-dev.
Unpacking libreadline-dev (from .../libreadline-dev_6.2-8_i386.deb) ...
Processing triggers for install-info ...
Setting up libreadline6-dev (6.2-8) ...
Setting up libreadline-dev (6.2-8) ...
linux@ubuntu:~/linux_c/lua/lua-5.1.5$ make linux
cd src && make linux
make[1]: Entering directory `/home/linux/linux_c/lua/lua-5.1.5/src'
make all MYCFLAGS=-DLUA_USE_LINUX MYLIBS="-Wl,-E -ldl -lreadline -lhistory -lncurses"
make[2]: Entering directory `/home/linux/linux_c/lua/lua-5.1.5/src'
gcc -o lua lua.o liblua.a -lm -Wl,-E -ldl -lreadline -lhistory -lncurses
gcc -O2 -Wall -DLUA_USE_LINUX -c -o luac.o luac.c
gcc -O2 -Wall -DLUA_USE_LINUX -c -o print.o print.c
gcc -o luac luac.o print.o liblua.a -lm -Wl,-E -ldl -lreadline -lhistory -lncurses
make[2]: Leaving directory `/home/linux/linux_c/lua/lua-5.1.5/src'
make[1]: Leaving directory `/home/linux/linux_c/lua/lua-5.1.5/src'
安装
linux@ubuntu:~/linux_c/lua/lua-5.1.5$ sudo make install
cd src && mkdir -p /usr/local/bin /usr/local/include /usr/local/lib /usr/local/man/man1 /usr/local/share/lua/5.1 /usr/local/lib/lua/5.1
cd src && install -p -m 0755 lua luac /usr/local/bin
cd src && install -p -m 0644 lua.h luaconf.h lualib.h lauxlib.h ../etc/lua.hpp /usr/local/include
cd src && install -p -m 0644 liblua.a /usr/local/lib
cd doc && install -p -m 0644 lua.1 luac.1 /usr/local/man/man1
linux@ubuntu:~/linux_c/lua/lua-5.1.5$ which lua
/usr/local/bin/lua
linux@ubuntu:~/linux_c/lua/lua-5.1.5$ which luac
/usr/local/bin/luac
测试是否安装成功
linux@ubuntu:~/linux_c/lua/lua-5.1.5$ lua
Lua 5.1.5 Copyright (C) 1994-2012 Lua.org, PUC-Rio
>
或
linux@ubuntu:~/linux_c/lua/lua-5.1.5$ lua -v
Lua 5.1.5 Copyright (C) 1994-2012 Lua.org, PUC-Rio
例子1：
#!/usr/bin/lua
--hello world lua program
print ("Hello World!")
linux@ubuntu:~/linux_c/lua/lua-5.1.5/luca_study$ lua test1.lua
Hello World!
改进
..是lua中字符串的连接符，为了规范，使用的时候前后必须
有空格，例如:print(10 .. 20) --> 1020
#!/usr/bin/lua
--hello world lua program
print ("Hello World!")
str = "Hello World!"
print (str)
if str == "Hello World!" then
print "ok"
end
~
linux@ubuntu:~/linux_c/lua/lua-5.1.5/luca_study$ lua test1.lua
Hello World!
Hello World!
Ok
Lua教程http://tech.it168.com/zt/lua/
例子二：
C语言调用LUA脚本
Hello.c
/*
**API
**
** yangj 2011-04-20
**
**
*****************************************************/
#include <stdio.h>
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
//#pragma comment(lib, "lualib.lib")
int main(void)
{
lua_State * L = lua_open(); // open lua
luaL_openlibs(L);
luaL_dofile(L, "./test1.lua");
lua_close(L);
return 0;
}
Test1.lua
#!/usr/bin/lua
--hello world lua program
print ("Hello World!")
-- the first program in every language
io.write("Hello world, from ",_VERSION,"!\n")
str = "Hello World!"
print (str)
if str == "Hello World!" then
print "ok"
end
print ("This a " .. "string.")
--[[i
/*
yunsuani
*/
]]
a={1,2}
b=a
print(a==b, a~=b) -- true, false
a={1,2}
b={1,2}
print(a==b, a~=b) -- false, true
function f(x)
return x*x*x-x-1
end
print (f(5))
--[[
t ={
Age = 27
add = function(self, n)
self.Age = self.Age+n
end
}
print(t.Age) -- 27
t.add(t, 10)
print(t.Age) -- 37
]]
linux@ubuntu:~/linux_c/lua/lua-5.1.5/luca_study$ gcc -g hello.c -llua -lm
/usr/local/lib/liblua.a(loadlib.o): In function `ll_loadfunc':
loadlib.c:(.text+0xa17): undefined reference to `dlsym'
loadlib.c:(.text+0xa74): undefined reference to `dlopen'
loadlib.c:(.text+0xa81): undefined reference to `dlerror'
loadlib.c:(.text+0xa99): undefined reference to `dlerror'
/usr/local/lib/liblua.a(loadlib.o): In function `gctm':
loadlib.c:(.text+0xe9c): undefined reference to `dlclose'
collect2: ld returned 1 exit status
linux@ubuntu:~/linux_c/lua/lua-5.1.5/luca_study$ gcc -g hello.c -llua -lm -ldl
linux@ubuntu:~/linux_c/lua/lua-5.1.5/luca_study$ ls -l
total 188
-rwxrwxr-x 1 linux linux 180460 Sep 14 18:48 a.out
-rw-rw-r-- 1 linux linux 392 Sep 14 18:47 hello.c
-rwxrwxr-x 1 linux linux 559 Sep 14 16:41 test1.lua
linux@ubuntu:~/linux_c/lua/lua-5.1.5/luca_study$ ./a.out
Hello World!
Hello world, from Lua 5.1!
Hello World!
ok
This a string.
true false
false true
119
例子三：CPP调用LUA
testcpp.cpp
#include <stdio.h>
#include <iostream>
extern "C"
{
#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"
}//在工具中包含文件的那个~~
/* Lua解释器指针 */
lua_State * L;
//#pragma comment(lib,"lua51.lib")//包含库文件~~在工具里包含不进来，上面的包含不进来的处理办法是：
//把lua51.dll 拷到项目的dubug目录下，把lua51.lib拷到项目目录的项目名的文件夹下
int main ()
{
//cout<<"cpp invoke lua example";
printf("cpp invoke lua example\n");
/* 初始化Lua */
L = lua_open();
/* 载入Lua基本库 */
luaL_openlibs(L);
/* 运行脚本 ,注意路径*/
luaL_dofile(L, "./test1.lua");
/* 清除Lua */
lua_close(L);
//printf( "Press enter to exit…" );
//getchar();
return 0;
}
C++中调用LUA
linux@ubuntu:~/linux_c/lua/lua-5.1.5/luca_study$ g++ -g testcpp.cpp -llua -lm -ldl
linux@ubuntu:~/linux_c/lua/lua-5.1.5/luca_study$ ./a.out
cpp invoke lua example
Hello World!
Hello world, from Lua 5.1!
Hello World!
ok
This a string.
true false
false true
119
linux@ubuntu:~/linux_c/lua/lua-5.1.5/luca_study$ cat /usr/local/include/lua.hpp
// lua.hpp
// Lua header files for C++
// <<extern "C">> not supplied automatically because Lua also compiles as C++
extern "C" {
#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"
}
在C++中引用C语言中的函数和变量，在包含C语言头文件（假设为cExample.h）时，需进行下列处理：
extern "C"
{
#include "cExample.h"
}
所以上述CPP文件extern "C"
{
#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"
}//在工具中包含文件的那个~~
可以替换为
#include "lua.hpp"
Openwrt 之uci 在ubuntu中的测试
UCI是Unified Configuration Interface的缩写，翻译成中文就是统一配置接口，用途就是为OpenWrt提供一个集中控制的接口。OpenWrt实现的这个工具，能够让你的不管是Lua还是PHP程序，或者SHELL程序或C程序，只要执行命令传输参数就能达到修改系统参数的目的.
Uci 在ubuntu下的使用.
UCI的配置文件被分割成/etc/config下的多个独立的文件，各个文件按名字含义对应系统的不同的功能配置。你可以通过文本编译器或者uci实用程序去修改这些配置文件，同时uci还提供了C语言/脚本/Lua等语言的应用程序接口，WEB配置页面例如Luci就是利用了uci所提供的API而实现对UCI配置文件的修改的。
不管你是采用文本编辑器还是通过命令行的方式修改了UCI配置文件，相应的服务或应用程序不会自动更新状态，这时你都必须调用一次/etc/init.d (re)start才能使刚刚对UCI配置文件的修改生效。许多兼容UCI的程序采用这样的方法来应用更新：在init.d脚本执行流中去修改自己程序的配置文件。具体说来，init.d脚本先去修改自己程序的原配置文件中的信息（如/etc/samba/smb.conf），之后重启一次应用程序，应用程序就会去读自己的配置文件（刚刚被init.d更新过的）再启动，这样应用程序的状态就更新了。仅仅重启应用程序，而不执行init.d脚本的话，/etc/config下的UCI配置文件是不会应用于应用程序的，新配置也就不生效了。
linux@ubuntu:~/linux_c/uci$ ls -l
total 56
drwxr-xr-x 5 linux linux 4096 Jul 21 09:31 uci-2014-04-11.1
-rw-rw-r-- 1 linux linux 50065 Sep 14 19:25 uci-2014-04-11.1.tar.gz
linux@ubuntu:~/linux_c/uci$ cd uci-2014-04-11.1/
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1$ ls -l
total 196
-rw-r--r-- 1 linux linux 4864 Jul 21 09:31 blob.c
-rw-r--r-- 1 linux linux 14589 Jul 21 09:31 cli.c
-rw-r--r-- 1 linux linux 1013 Jul 21 09:31 CMakeLists.txt
-rw-r--r-- 1 linux linux 10991 Jul 21 09:31 delta.c
-rw-r--r-- 1 linux linux 19524 Jul 21 09:31 file.c
-rw-r--r-- 1 linux linux 5290 Jul 21 09:31 libuci.c
-rw-r--r-- 1 linux linux 16379 Jul 21 09:31 list.c
-rw-r--r-- 1 linux linux 17600 Jul 21 09:31 list.h
drwxr-xr-x 2 linux linux 4096 Jul 21 09:31 lua
-rw-r--r-- 1 linux linux 2587 Jul 21 09:31 parse.c
drwxr-xr-x 2 linux linux 4096 Jul 21 09:31 sh
drwxr-xr-x 6 linux linux 4096 Jul 21 09:31 test
-rw-r--r-- 1 linux linux 1299 Jul 21 09:31 uci_blob.h
-rw-r--r-- 1 linux linux 59 Jul 21 09:31 uci_config.h.in
-rw-r--r-- 1 linux linux 17605 Jul 21 09:31 uci.h
-rw-r--r-- 1 linux linux 7220 Jul 21 09:31 uci_internal.h
-rw-r--r-- 1 linux linux 19146 Jul 21 09:31 ucimap.c
-rw-r--r-- 1 linux linux 9118 Jul 21 09:31 ucimap.h
-rw-r--r-- 1 linux linux 5109 Jul 21 09:31 util.c
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1$ cmake .
-- The C compiler identification is GNU
-- Check for working C compiler: /usr/bin/gcc
-- Check for working C compiler: /usr/bin/gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Configuring done
-- Generating done
-- Build files have been written to: /home/linux/linux_c/uci/uci-2014-04-11.1
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1$ make
Scanning dependencies of target uci
[ 11%] Building C object CMakeFiles/uci.dir/libuci.c.o
[ 22%] Building C object CMakeFiles/uci.dir/file.c.o
[ 33%] Building C object CMakeFiles/uci.dir/util.c.o
[ 44%] Building C object CMakeFiles/uci.dir/delta.c.o
[ 55%] Building C object CMakeFiles/uci.dir/parse.c.o
[ 66%] Building C object CMakeFiles/uci.dir/blob.c.o
Linking C shared library libuci.so
[ 66%] Built target uci
Scanning dependencies of target cli
[ 77%] Building C object CMakeFiles/cli.dir/cli.c.o
Linking C executable uci
[ 77%] Built target cli
Scanning dependencies of target ucimap
[ 88%] Building C object CMakeFiles/ucimap.dir/ucimap.c.o
Linking C static library libucimap.a
[ 88%] Built target ucimap
Scanning dependencies of target uci_lua
[100%] Building C object lua/CMakeFiles/uci_lua.dir/uci.c.o
Linking C shared module uci.so
[100%] Built target uci_lua
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1$ file uci
uci: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.24, BuildID[sha1]=0xd271be1dcdf6d41d5e6517da451263c291483673, not stripped
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1$ sudo make install
[sudo] password for linux:
[ 66%] Built target uci
[ 77%] Built target cli
[ 88%] Built target ucimap
[100%] Built target uci_lua
Install the project...
-- Install configuration: ""
-- Installing: /usr/local/include/uci.h
-- Installing: /usr/local/include/uci_config.h
-- Installing: /usr/local/include/uci_blob.h
-- Installing: /usr/local/include/ucimap.h
-- Installing: /usr/local/lib/libuci.so
-- Installing: /usr/local/bin/uci
-- Removed runtime path from "/usr/local/bin/uci"
-- Installing: /usr/local/lib/lua/5.1/uci.so
-- Removed runtime path from "/usr/local/lib/lua/5.1/uci.so"
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1$ which uci
/usr/local/bin/uci
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1$ uci -v
uci: error while loading shared libraries: libuci.so: cannot open shared object file: No such file or directory
linux@ubuntu:/usr/local/lib$ ldd /usr/local/bin/uci
linux-gate.so.1 => (0xb779f000)
libuci.so => not found
libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0xb75e7000)
/lib/ld-linux.so.2 (0xb77a0000)
linux@ubuntu:/usr/local/lib$ LD_DEBUG=libs uci -v
5877: find library=libuci.so [0]; searching
5877: search cache=/etc/ld.so.cache
5877: search path=/lib/i386-linux-gnu/tls/i686/sse2/cmov:/lib/i386-linux-gnu/tls/i686/sse2:/lib/i386-linux-gnu/tls/i686/cmov:/lib/i386-linux-gnu/tls/i686:/lib/i386-linux-gnu/tls/sse2/cmov:/lib/i386-linux-gnu/tls/sse2:/lib/i386-linux-gnu/tls/cmov:/lib/i386-linux-gnu/tls:/lib/i386-linux-gnu/i686/sse2/cmov:/lib/i386-linux-gnu/i686/sse2:/lib/i386-linux-gnu/i686/cmov:/lib/i386-linux-gnu/i686:/lib/i386-linux-gnu/sse2/cmov:/lib/i386-linux-gnu/sse2:/lib/i386-linux-gnu/cmov:/lib/i386-linux-gnu:/usr/lib/i386-linux-gnu/tls/i686/sse2/cmov:/usr/lib/i386-linux-gnu/tls/i686/sse2:/usr/lib/i386-linux-gnu/tls/i686/cmov:/usr/lib/i386-linux-gnu/tls/i686:/usr/lib/i386-linux-gnu/tls/sse2/cmov:/usr/lib/i386-linux-gnu/tls/sse2:/usr/lib/i386-linux-gnu/tls/cmov:/usr/lib/i386-linux-gnu/tls:/usr/lib/i386-linux-gnu/i686/sse2/cmov:/usr/lib/i386-linux-gnu/i686/sse2:/usr/lib/i386-linux-gnu/i686/cmov:/usr/lib/i386-linux-gnu/i686:/usr/lib/i386-linux-gnu/sse2/cmov:/usr/lib/i386-linux-gnu/sse2:/usr/lib/i386-linux-gnu/cmov:/usr/lib/i386-linux-gnu:/lib/tls/i686/sse2/cmov:/lib/tls/i686/sse2:/lib/tls/i686/cmov:/lib/tls/i686:/lib/tls/sse2/cmov:/lib/tls/sse2:/lib/tls/cmov:/lib/tls:/lib/i686/sse2/cmov:/lib/i686/sse2:/lib/i686/cmov:/lib/i686:/lib/sse2/cmov:/lib/sse2:/lib/cmov:/lib:/usr/lib/tls/i686/sse2/cmov:/usr/lib/tls/i686/sse2:/usr/lib/tls/i686/cmov:/usr/lib/tls/i686:/usr/lib/tls/sse2/cmov:/usr/lib/tls/sse2:/usr/lib/tls/cmov:/usr/lib/tls:/usr/lib/i686/sse2/cmov:/usr/lib/i686/sse2:/usr/lib/i686/cmov:/usr/lib/i686:/usr/lib/sse2/cmov:/usr/lib/sse2:/usr/lib/cmov:/usr/lib (system search path)
5877: trying file=/lib/i386-linux-gnu/tls/i686/sse2/cmov/libuci.so
5877: trying file=/lib/i386-linux-gnu/tls/i686/sse2/libuci.so
5877: trying file=/lib/i386-linux-gnu/tls/i686/cmov/libuci.so
5877: trying file=/lib/i386-linux-gnu/tls/i686/libuci.so
5877: trying file=/lib/i386-linux-gnu/tls/sse2/cmov/libuci.so
5877: trying file=/lib/i386-linux-gnu/tls/sse2/libuci.so
5877: trying file=/lib/i386-linux-gnu/tls/cmov/libuci.so
5877: trying file=/lib/i386-linux-gnu/tls/libuci.so
5877: trying file=/lib/i386-linux-gnu/i686/sse2/cmov/libuci.so
5877: trying file=/lib/i386-linux-gnu/i686/sse2/libuci.so
5877: trying file=/lib/i386-linux-gnu/i686/cmov/libuci.so
5877: trying file=/lib/i386-linux-gnu/i686/libuci.so
5877: trying file=/lib/i386-linux-gnu/sse2/cmov/libuci.so
5877: trying file=/lib/i386-linux-gnu/sse2/libuci.so
5877: trying file=/lib/i386-linux-gnu/cmov/libuci.so
5877: trying file=/lib/i386-linux-gnu/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/tls/i686/sse2/cmov/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/tls/i686/sse2/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/tls/i686/cmov/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/tls/i686/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/tls/sse2/cmov/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/tls/sse2/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/tls/cmov/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/tls/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/i686/sse2/cmov/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/i686/sse2/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/i686/cmov/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/i686/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/sse2/cmov/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/sse2/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/cmov/libuci.so
5877: trying file=/usr/lib/i386-linux-gnu/libuci.so
5877: trying file=/lib/tls/i686/sse2/cmov/libuci.so
5877: trying file=/lib/tls/i686/sse2/libuci.so
5877: trying file=/lib/tls/i686/cmov/libuci.so
5877: trying file=/lib/tls/i686/libuci.so
5877: trying file=/lib/tls/sse2/cmov/libuci.so
5877: trying file=/lib/tls/sse2/libuci.so
5877: trying file=/lib/tls/cmov/libuci.so
5877: trying file=/lib/tls/libuci.so
5877: trying file=/lib/i686/sse2/cmov/libuci.so
5877: trying file=/lib/i686/sse2/libuci.so
5877: trying file=/lib/i686/cmov/libuci.so
5877: trying file=/lib/i686/libuci.so
5877: trying file=/lib/sse2/cmov/libuci.so
5877: trying file=/lib/sse2/libuci.so
5877: trying file=/lib/cmov/libuci.so
5877: trying file=/lib/libuci.so
5877: trying file=/usr/lib/tls/i686/sse2/cmov/libuci.so
5877: trying file=/usr/lib/tls/i686/sse2/libuci.so
5877: trying file=/usr/lib/tls/i686/cmov/libuci.so
5877: trying file=/usr/lib/tls/i686/libuci.so
5877: trying file=/usr/lib/tls/sse2/cmov/libuci.so
5877: trying file=/usr/lib/tls/sse2/libuci.so
5877: trying file=/usr/lib/tls/cmov/libuci.so
5877: trying file=/usr/lib/tls/libuci.so
5877: trying file=/usr/lib/i686/sse2/cmov/libuci.so
5877: trying file=/usr/lib/i686/sse2/libuci.so
5877: trying file=/usr/lib/i686/cmov/libuci.so
5877: trying file=/usr/lib/i686/libuci.so
5877: trying file=/usr/lib/sse2/cmov/libuci.so
5877: trying file=/usr/lib/sse2/libuci.so
5877: trying file=/usr/lib/cmov/libuci.so
5877: trying file=/usr/lib/libuci.so
5877:
uci: error while loading shared libraries: libuci.so: cannot open shared object file: No such file or directory
linux@ubuntu:/usr/local/lib$ ln -s /usr/local/lib/libuci.so /usr/lib/libuci.so
ln: failed to create symbolic link `/usr/lib/libuci.so': Permission denied
linux@ubuntu:/usr/local/lib$ sudo ln -s /usr/local/lib/libuci.so /usr/lib/libuci.so
linux@ubuntu:/usr/local/lib$ ldd /usr/local/bin/uci
linux-gate.so.1 => (0xb7776000)
libuci.so => /usr/lib/libuci.so (0xb7757000)
libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0xb75b2000)
libubox.so => /usr/lib/libubox.so (0xb75a7000)
/lib/ld-linux.so.2 (0xb7777000)
librt.so.1 => /lib/i386-linux-gnu/librt.so.1 (0xb759e000)
libpthread.so.0 => /lib/i386-linux-gnu/libpthread.so.0 (0xb7583000)
OK ，test下
linux@ubuntu:/usr/local/lib$ uci --version
uci: invalid option -- '-'
Usage: uci [<options>] <command> [<arguments>]
Commands:
batch
export [<config>]
import [<config>]
changes [<config>]
commit [<config>]
add <config> <section-type>
add_list <config>.<section>.<option>=<string>
del_list <config>.<section>.<option>=<string>
show [<config>[.<section>[.<option>]]]
get <config>.<section>[.<option>]
set <config>.<section>[.<option>]=<value>
delete <config>[.<section>[[.<option>][=<id>]]]
rename <config>.<section>[.<option>]=<name>
revert <config>[.<section>[.<option>]]
reorder <config>.<section>=<position>
Options:
-c <path> set the search path for config files (default: /etc/config)
-d <str> set the delimiter for list values in uci show
-f <file> use <file> as input instead of stdin
-m when importing, merge data into an existing package
-n name unnamed sections on export (default)
-N don't name unnamed sections
-p <path> add a search path for config change files
-P <path> add a search path for config change files and use as default
-q quiet mode (don't print error messages)
-s force strict mode (stop on parser errors, default)
-S disable strict mode
-X do not use extended syntax on 'show'
Uci使用
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1/test/config$ pwd
/home/linux/linux_c/uci/uci-2014-04-11.1/test/config
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1/test/config$ ls -l
total 4
-rw-r--r-- 1 linux linux 452 Jul 21 09:31 network
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1/test/config$ cat network
config 'alias' 'a'
option 'interface' 'lan'
config 'alias' 'b'
option 'interface' 'lan'
config 'interface' 'lan'
option 'proto' 'static'
option 'ifname' 'eth0'
option 'test' '123'
option 'enabled' 'off'
option 'ipaddr' '2.3.4.5'
config 'interface' 'wan'
option 'proto' 'dhcp'
option 'ifname' 'eth1'
option 'enabled' 'on'
option 'aliases' 'c d'
config 'alias' 'c'
option 'interface' 'wan'
config 'alias' 'd'
option 'interface' 'wan'
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1/test/config$ uci show -c /home/linux/linux_c/uci/uci-2014-04-11.1/test/config
network.a=alias
network.a.interface=lan
network.b=alias
network.b.interface=lan
network.lan=interface
network.lan.proto=static
network.lan.ifname=eth0
network.lan.test=123
network.lan.enabled=off
network.lan.ipaddr=2.3.4.5
network.wan=interface
network.wan.proto=dhcp
network.wan.ifname=eth1
network.wan.enabled=on
network.wan.aliases=c d
network.c=alias
network.c.interface=wan
network.d=alias
network.d.interface=wan
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1/test/config$ uci show network.b -c /home/linux/linux_c/uci/uci-2014-04-11.1/test/config
network.b=alias
network.b.interface=lan
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1/test/config$ uci show network.lan -c /home/linux/linux_c/uci/uci-2014-04-11.1/test/config
network.lan=interface
network.lan.proto=static
network.lan.ifname=eth0
network.lan.test=123
network.lan.enabled=off
network.lan.ipaddr=2.3.4.5
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1/test/config$ uci show network.lan.test -c /home/linux/linux_c/uci/uci-2014-04-11.1/test/config
network.lan.test=123
uci add操作
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1/test/config$ uci add network test -c /home/linux/linux_c/uci/uci-2014-04-11.1/test/config
cfg0a6865
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1/test/config$ uci commit
uci: Entry not found
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1/test/config$ uci commit -c /home/linux/linux_c/uci/uci-2014-04-11.1/test/config
linux@ubuntu:~/linux_c/uci/uci-2014-04-11.1/test/config$ cat network
config alias 'a'
option interface 'lan'
config alias 'b'
option interface 'lan'
config interface 'lan'
option proto 'static'
option ifname 'eth0'
option test '123'
option enabled 'off'
option ipaddr '2.3.4.5'
config interface 'wan'
option proto 'dhcp'
option ifname 'eth1'
option enabled 'on'
option aliases 'c d'
config alias 'c'
option interface 'wan'
config alias 'd'
option interface 'wan'
config wire 'test'
config test
config test
生效修改(任何写入类的语法,最终都要执行生效修改,否则所做修改只在缓存中,切记!)
创建UCI文件并测试
默认uci搜索目录是/etc/config
linux@ubuntu:/etc/config$ sudo mkdir -p /etc/config
linux@ubuntu:/etc/config$ sudo touch test
linux@ubuntu:/etc/config$ ls -l
total 0
-rw-r--r-- 1 root root 0 Sep 15 09:51 test
linux@ubuntu:/etc/config$ sudo chown linux:linux test
linux@ubuntu:/etc/config$ ls -l
total 0
-rw-r--r-- 1 linux linux 0 Sep 15 09:51 test
linux@ubuntu:/etc/config$ chmod 777 test
linux@ubuntu:/etc/config$ vi test
linux@ubuntu:/etc/config$ uci show
test.abc=test
test.abc.test_var=value
test.abc.test_var2=value22
linux@ubuntu:/etc/config$ cat test
config 'test' 'abc'
option 'test_var' 'value'
option 'test_var2' 'value22'
参考
总结：
1. 和共享库相关的一些错误如何处理：
1> LD_DEBUG命令：
LD_DEBUG 是 glibc中的 loader 为了方便自身调试而设置的一个环境变量。通过设置这个环境变量，可以方便的看到 loader 的加载过程。
UCI API的使用
C中调用UCI API
http://blog.chinaunix.net/uid-26675482-id-4633889.html
好了 ,lua 学习 , uci也学习了，接下来就是luci
Lua中使用UCI 例子：
Luci文件源代码：
linux@ubuntu:~/linux_c/lua/lua-5.1.5/luca_study$cat test1.luci
#!/usr/bin/lua
--helloworld lua program
print("Hello World!")
require("uci")
-- Get asection type or an option
x =uci.cursor()
a =x:get("test", "abc", "test_var")
print(a)
-- Getthe configuration directory
b =x:get_confdir()
print(b)
-- Getall sections of a config or all values of a section
d =x:get_all("test", "abc")
print(d)
print(d["test_var"])
print(d["test_var2"])
uci 文件具体内容
linux@ubuntu:/etc/config$pwd
/etc/config
linux@ubuntu:/etc/config$cat test
config'test' 'abc'
option 'test_var' 'value'
option 'test_var2' 'value22'
执行测试输出结果：
linux@ubuntu:~/linux_c/lua/lua-5.1.5/luca_study$lua test1.luci
HelloWorld!
value
/etc/config
table:0x9190018
value
value22
Luci api
http://luci.subsignal.org/api/luci/
http://wiki.openwrt.org/doc/techref/uci#api
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