github-mirror/lkmpg
github-mirror/lkmpg
2
0
Fork 0
mirror of https://github.com/sysprog21/lkmpg.git synced 2025-02-21 18:01:02 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge pull request #237 from heartofrain/master

Browse Source 
Revise the depiction of return type of proc_create().
This commit is contained in:
Jim Huang 2023-10-07 17:12:27 +08:00 committed by GitHub
commit eaecd29037
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
lkmpg.tex
View File

@ -1145,7 +1145,7 @@ This is the HelloWorld for the \verb|/proc| filesystem.
There are three parts: create the file \verb|/proc/helloworld| in the function \cpp|init_module|, return a value (and a buffer) when the file \verb|/proc/helloworld| is read in the callback function \cpp|procfile_read|, and delete the file \verb|/proc/helloworld| in the function \cpp|cleanup_module|.
The \verb|/proc/helloworld| is created when the module is loaded with the function \cpp|proc_create|.
The return value is a \cpp|struct proc_dir_entry|, and it will be used to configure the file \verb|/proc/helloworld| (for example, the owner of this file).
The return value is a pointer to \cpp|struct proc_dir_entry|, and it will be used to configure the file \verb|/proc/helloworld| (for example, the owner of this file).
A null return value means that the creation has failed.
Every time the file \verb|/proc/helloworld| is read, the function \cpp|procfile_read| is called.