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syscall: rename module name to syscall_steal

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In Debian, the name syscall conflicts with this patch:
in debian kernel source tree:
debian/patches/features/x86/x86-make-x32-syscall-support-conditional.patch
mailing list url:
https://lore.kernel.org/lkml/1415245982.3398.53.camel@decadent.org.uk/T/#u
which introduces a parameter named syscall.x32. So change our name.
This commit is contained in:
keytouch 2023-12-21 22:12:24 +08:00
parent 3490cd7c41
commit a60e84a060
3 changed files with 7 additions and 7 deletions
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2
examples/Makefile
View File

@ -16,7 +16,7 @@ obj-m += print_string.o
obj-m += kbleds.o obj-m += kbleds.o
obj-m += sched.o obj-m += sched.o
obj-m += chardev2.o obj-m += chardev2.o
obj-m += syscall.o obj-m += syscall_steal.o
obj-m += intrpt.o obj-m += intrpt.o
obj-m += cryptosha256.o obj-m += cryptosha256.o
obj-m += cryptosk.o obj-m += cryptosk.o

10
examples/syscall.c → examples/syscall_steal.c
View File

@ -1,5 +1,5 @@
/* /*
* syscall.c * syscall_steal.c
* *
* System call "stealing" sample. * System call "stealing" sample.
* *
@ -206,7 +206,7 @@ static void disable_write_protection(void)
__write_cr0(cr0); __write_cr0(cr0);
} }
static int __init syscall_start(void) static int __init syscall_steal_start(void)
{ {
if (!(sys_call_table = acquire_sys_call_table())) if (!(sys_call_table = acquire_sys_call_table()))
return -1; return -1;
@ -226,7 +226,7 @@ static int __init syscall_start(void)
return 0; return 0;
} }
static void __exit syscall_end(void) static void __exit syscall_steal_end(void)
{ {
if (!sys_call_table) if (!sys_call_table)
return; return;
@ -246,7 +246,7 @@ static void __exit syscall_end(void)
msleep(2000); msleep(2000);
} }
module_init(syscall_start); module_init(syscall_steal_start);
module_exit(syscall_end); module_exit(syscall_steal_end);
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");

2
lkmpg.tex
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@ -1491,7 +1491,7 @@ $ sudo grep sys_call_table /proc/kallsyms
ffffffff82000280 R x32_sys_call_table ffffffff82000280 R x32_sys_call_table
ffffffff820013a0 R sys_call_table ffffffff820013a0 R sys_call_table
ffffffff820023e0 R ia32_sys_call_table ffffffff820023e0 R ia32_sys_call_table
$ sudo insmod syscall.ko sym=0xffffffff820013a0 $ sudo insmod syscall_steal.ko sym=0xffffffff820013a0
\end{verbatim} \end{verbatim}
Using the address from \verb|/boot/System.map|, be careful about \verb|KASLR| (Kernel Address Space Layout Randomization). Using the address from \verb|/boot/System.map|, be careful about \verb|KASLR| (Kernel Address Space Layout Randomization).