Transcript Files to change in Redhat Linux

Files to change in Redhat Linux
The following list is a starting point
for adding a simple kernel service.
Possible files to change in Redhat Linux
1. /usr/src/redhat/BUILD/kernel-2.6.18/linux2.6.18.s390x/arch/s390/mm/fault.c
2. /usr/src/redhat/BUILD/kernel-2.6.18/linux2.6.18.s390x/arch/s390/kernel/syscalls.S
3. /usr/src/kernels/2.6.18-92.el5s390x/include/asm-s390/unistd.h
4. /usr/src/redhat/BUILD/kernel-2.6.18/linux2.6.18.s390x/include/asm-s390/unistd.h
5. /usr/include/asm/unistd.h
--------- The following file is for PCs only ---------/usr/src/redhat/BUILD/kernel-2.6.18/linux2.6.18.s390x/arch/i386/kernel/syscall_table.S
Contents, by number on previous slide
1. “mm/fault.c”: Your code for the service call
2. “syscalls.S”: Builds the syscall table
3. “../kernels../unistd.h”: Defines the name &
number of the call
4. “../redhat/BUILD/../unistd.h”: Same as above
5. “/usr/include/asm/unistd.h”: Contains the
include values for the kernel itself to determine
what facilities are available at compile time
---------------------------------------------6. “syscall_table.S”: Defines the name as a “long”
Names I used (for my own solution)
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…/fault.c:
sys_DJ_fault_tracker 311
…/BUILD…/unistd.h
“
/usr/include/asm
“
(this one allows the TESTING
program to use sys_DJ_fault_tracker instead of 311)
…/kernels…asm_s390\unistd.h
__NR_DJ_fault_tracker 311
(note that this one is different, but it doesn’t hurt because it isn’t referenced by
fault.c)
…/syscalls.S
(sys_DJ_fault_tracker, sys_DJ_fault_tracker, sys_DJ_fault_tracker)
The whole point of using a NAME instead of the number is that, users do not have
to use raw numbers. Raw numbers lead to errors. Names are better (for humans
anyway).
Of course, you should have your own names!!!!
Possible files to change in x86 Fedora Linux
1. /rpmbuild/BUILD/kernel-3.9.fc17/linux-3.9.10100.fc17.i686/arch/x86/mm/fault.c
2. /rpmbuild/BUILD/kernel-3.9.fc17/linux-3.9.10100.fc17.i686/arch/x86/syscalls/syscall_32.tbl
3. /rpmbuild/BUILD/kernel-3.9.fc17/linux-3.9.10100.fc17.i686/arch/x86/include/asm/unistd.h
4. /usr/include/asm/unistd.h