瞅过来~~~编译LDD3的scull驱动问题总结来了

pulbieup

由于Linux内核版本更新的原因，LDD3（v2.6.10）提供的源码无法直接使用，下面是本人编译scull源码时出现的一些问题及解决方法。
编译环境：CentOS 6.3（kernel version 2.6.32）
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编译错误：
$ n- i- b% f$ g3 e/ Dmake -C /lib/modules/2.6.32-279.14.1.el6.i686/build M=/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull LDDINC=/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/../include modules
: T2 x# p4 q, I2 j% L& K) [make[1]: Entering directory `/usr/src/kernels/2.6.32-279.14.1.el6.i686'
scripts/Makefile.build:49: *** CFLAGS was changed in "/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/Makefile". Fix it to use EXTRA_CFLAGS.  Stop.
. R" Q, C: q% h* ~! t. kmake[1]: *** [_module_/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull] Error 2
make[1]: Leaving directory `/usr/src/kernels/2.6.32-279.14.1.el6.i686'
make: *** [modules] Error 2
解决方案：
CFLAGS与Makefile.build中的CFLAGS冲突，错误提示要求将CFLAG换成EXTRA_CFLAGS重新编译即可；
% m" [- _& i! Y$ Q
编译错误：
error: linux/config.h: No such file or directory
$ A3 S. U  z# [) W+ G( w解决方案：
3 S) h: y$ o: |! ]( \5 s从linux-2.6.20起，config.h就已经被移除了.
将#include <linux/config.h>修改成如下——>
  H- T: x4 [: L$ {* n#include <linux/version.h>
; F1 {! q6 p& N. p- R8 W4 m8 [, w#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18))
! w9 t" a2 W! _( O, a. a#include <linux/config.h>
#endif
# h% `! d5 R4 \7 a2 u" x8 x9 O3 @% H
编译错误：
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c: In function ‘scull_p_read’:
- k8 {2 z7 K5 A  I/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:131: error: ‘TASK_INTERRUPTIBLE’ undeclared (first use in this function)
; X1 _5 G& R8 j9 |! O+ G* |/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:131: error: (Each undeclared identifier is reported only once
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:131: error: for each function it appears in.)
4 q' h. Z' D5 ]$ U; c+ i3 i/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:131: error: implicit declaration of function ‘signal_pending’
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:131: error: implicit declaration of function ‘schedule’
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c: In function ‘scull_getwritespace’:
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:168: error: ‘TASK_INTERRUPTIBLE’ undeclared (first use in this function)
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c: In function ‘scull_p_write’:
$ f, o; F' U! \) w7 S4 h/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:219: error: ‘TASK_INTERRUPTIBLE’ undeclared (first use in this function)
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:223: error: ‘SIGIO’ undeclared (first use in this function)
  _  f: Q* H& _! o/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.c:223: error: ‘POLL_IN’ undeclared (first use in this function)
make[2]: *** [/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/pipe.o] Error 1
) `) K' H6 {: }* `. l+ p% K% Imake[1]: *** [_module_/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull] Error 2
1 B  F3 ^7 K4 o- ]解决方案：
头文件变动原因，在pipe.c中添加
#include <linux/sched.h>

7 |- x$ |- {( x% \$ w6 x2 ~, _编译错误：
* \2 G9 r+ a$ @5 c2 t; R2 F/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c: In function ‘scull_u_open’:
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:106: error: dereferencing pointer to incomplete type
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:107: error: dereferencing pointer to incomplete type
& I3 J( z) i' B( H/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:114: error: dereferencing pointer to incomplete type
' x2 s8 [9 O  `& g- C* |( g/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c: In function ‘scull_w_available’:
/ Y! B& n  p0 U& ~, T2 d% l0 n/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:165: error: dereferencing pointer to incomplete type
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:166: error: dereferencing pointer to incomplete type
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c: In function ‘scull_w_open’:
. M" o1 \8 u; ]% m* h. R  z( b/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:179: error: ‘TASK_INTERRUPTIBLE’ undeclared (first use in this function)
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:179: error: (Each undeclared identifier is reported only once
7 F& `* A5 N/ D& R+ c+ L/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:179: error: for each function it appears in.)
7 `) r$ u- l( _" z1 {/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:179: error: implicit declaration of function ‘signal_pending’
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:179: error: implicit declaration of function ‘schedule’
2 m  Z4 `, Y% `  `8 A, `; a/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:184: error: dereferencing pointer to incomplete type
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c: In function ‘scull_w_release’:
/ H% ]5 T9 Q' X& n  _/ }+ X7 z( I/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:205: error: ‘TASK_INTERRUPTIBLE’ undeclared (first use in this function)
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c: In function ‘scull_c_open’:
  _1 y, y- L# t7 j0 {/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:277: error: dereferencing pointer to incomplete type
. f- T$ N. ~6 N* s) g/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:281: error: dereferencing pointer to incomplete type
make[2]: *** [/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.o] Error 1
make[1]: *** [_module_/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull] Error 2
+ T2 }/ ?! l' s5 y4 [make[1]: Leaving directory `/usr/src/kernels/2.6.32-279.14.1.el6.i686'
/ i8 w& G2 w/ r: Cmake: *** [modules] Error 2
+ Q. J6 T! \1 b6 _# x' X5 K解决方案：
头文件变动原因，在access.c中添加
3 j9 b# K  i9 J  d1 t7 @#include <linux/sched.h>   
1 i3 d' {/ ^7 s' v6 ~7 a7 ]. a
编译错误：
# ]( Y; y3 `8 ?: L3 H- I/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c: In function ‘scull_u_open’:
; _8 c3 y9 Q+ H6 i% K# l5 L! z: Y/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:107: error: ‘struct task_struct’ has no member named ‘uid’
) C- K. m% I+ }/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:108: error: ‘struct task_struct’ has no member named ‘euid’
, K- h9 y0 |9 v/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:115: error: ‘struct task_struct’ has no member named ‘uid’
5 |# [7 g* m3 h$ |* m9 f( t/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c: In function ‘scull_w_available’:
) h9 x1 j; Z3 r9 w/ m% e# [! e/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:166: error: ‘struct task_struct’ has no member named ‘uid’
  Z* O! {+ N5 e/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:167: error: ‘struct task_struct’ has no member named ‘euid’
/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c: In function ‘scull_w_open’:
0 j& o! i  u" F, @  U* R8 H/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.c:185: error: ‘struct task_struct’ has no member named ‘uid’
make[2]: *** [/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull/access.o] Error 1
make[1]: *** [_module_/mnt/HappyStudy/MyDesigner/Linux/LDD3/examples/scull] Error 2
# F+ N9 F1 H- Z, M% h7 u3 {$ D5 Jmake[1]: Leaving directory `/usr/src/kernels/2.6.32-279.14.1.el6.i686'
) d: g6 x5 T) g/ Q, p/ omake: *** [modules] Error 2
解决方案：
因为内核版本的升级，struct task_struct发生了变动，uid和euid放到了cred域下.
8 H" }9 P# v5 L# E9 N修改，做如下替换
+ Z* u- ~. M- j; x9 P( k( n8 qcurrent->uid 替换成current->cred->uid
3 e% s: D9 |* l2 _3 D/ n6 r) X6 dcurrent->euid替换成current->cred->euid
/ E' ]  t8 N" l/ F- ?
9 V0 w& O: A; R& k1 W6 z! L7 w重新编译，成功！
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fanichicl

谢谢分享。