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Improve the description of finding syscall table

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Presently, the representation of showing which version will use the
method to find out the system call table is vague.

Related discussion:
* sysprog21/lkmpg: https://github.com/sysprog21/lkmpg/pull/142
This commit is contained in:
linD026 2022-03-16 23:17:31 +08:00
parent 19521bc60a
commit 85ee0ec67b
1 changed files with 3 additions and 3 deletions
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6
examples/syscall.c
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@ -24,9 +24,9 @@
#include <linux/uaccess.h>
/* The way we access "sys_call_table" varies as kernel internal changes.
* - ver <= 5.4 : manual symbol lookup
* - 5.4 < ver < 5.7 : kallsyms_lookup_name
* - 5.7 <= ver : Kprobes or specific kernel module parameter
* - Prior to v5.4 : manual symbol lookup
* - v5.5 to v5.6 : use kallsyms_lookup_name()
* - v5.7+ : Kprobes or specific kernel module parameter
*/
/* The in-kernel calls to the ksys_close() syscall were removed in Linux v5.11+.