ktonibud' imeet opyt po napisaniju caskada? karakter-orientirowannyx driverov?

nashol primer http://web.wrox.com/0764543733/2971.tar.gz -> chapter21 - schar.c

pri compiljacii wydajot:

[root@localhost schar]# make
gcc -D__KERNEL__ -I/usr/src/linux/include -DMODULE -Wall -O2 -c -o
schar.o schar.c
schar.c:41: warning: initialization from incompatible pointer type
schar.c:42: warning: initialization from incompatible pointer type
schar.c:44: warning: initialization from incompatible pointer type
schar.c:45: warning: initialization from incompatible pointer type
schar.c:46: warning: initialization from incompatible pointer type
schar.c:47: warning: initialization from incompatible pointer type
schar.c:49: warning: initialization from incompatible pointer type
schar.c: In function `schar_mmap':
schar.c:167: structure has no member named `vm_offset'
schar.c: In function `init_module':
schar.c:449: warning: implicit declaration of function `MAP_NR'
schar.c:449: invalid type argument of `->'
schar.c:461: structure has no member named `fill_inode'
schar.c: In function `cleanup_module':
schar.c:482: invalid type argument of `->'
make: *** [schar.o] Error 1


dobawil w bibliotecu mm.h

unsigned long vm_offset; // sjuda bol'she ne zhaluetsja
-> schar.c:167: structure has no member named `vm_offset'

eto tozhe legko le4itsja putjom komentarija ;)

schar.c: In function `init_module':
schar.c:449: warning: implicit declaration of function `MAP_NR'
schar.c:449: invalid type argument of `->'
schar.c:461: structure has no member named `fill_inode'
schar.c: In function `cleanup_module':
schar.c:482: invalid type argument of `->'

eto ne le4itsja ni kak ->
schar.c:41: warning: initialization from incompatible pointer type
....

xotja kompiliruetsja ... no ne rabotaet... kak nado...

.....
sdelal ssylku na driver w /dev/schar ->
mknod /dev/schar c 42 0

modul' podgruzhaetsja....

pri popytki tuda 4tonibud'pisat'
cp /root/url /dev/schar
wydajot:
cp: writing '/dev/schar' : Invalid argument
....

mozhet kto stalkiwalsja s podobnoj problemoj...?

zaranee blagodaren

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