linD026 1a6fb67cf2

Fix potential concurrent access problems with VFS (#108) ...

Since Linux v3.14, the read, write and seek operations of "struct file" are
guaranteed for thread safety [1][2]. This patch added an explanation.

Here are the potential problems:
chardev.c:
- Move the "msg_ptr" pointer into the read function to remove unnecessary usage.
- List the clear states of "already_open" by using mnemonic enumeration.

chardev2.c:
- The "buffer" in the write function is user space data. It cannot use in the
  kernel space.
- Reduce the redundant type transformation.
- List the states of "already_open". Same as chardev.c.

[1] https://lore.kernel.org/lkml/20140303210359.26624.qmail@science.horizon.com/T/#u
[2] 9c225f2655

2021-09-23 12:20:10 +08:00

..

other

Enforce consistent style for directory "other" (#89)

2021-09-02 16:26:29 +08:00

.clang-format

Enforce Linux kernel coding style (#88)

2021-09-02 15:15:07 +08:00

bottomhalf.c

Fix the warnings raised by Sparse (#92)

2021-09-04 17:53:29 +08:00

chardev2.c

Fix potential concurrent access problems with VFS (#108)

2021-09-23 12:20:10 +08:00

chardev.c

Fix potential concurrent access problems with VFS (#108)

2021-09-23 12:20:10 +08:00

chardev.h

Enforce Linux kernel coding style (#88)

2021-09-02 15:15:07 +08:00

completions.c

Fix the warnings raised by Sparse (#92)

2021-09-04 17:53:29 +08:00

cryptosha256.c

Fix the warnings raised by Sparse (#92)

2021-09-04 17:53:29 +08:00

cryptosk.c

Fix the warnings raised by Sparse (#92)

2021-09-04 17:53:29 +08:00

devicemodel.c

Enforce Linux kernel coding style (#88)

2021-09-02 15:15:07 +08:00

example_atomic.c

CI: Run static analysis with Cppcheck (#105)

2021-09-14 00:52:04 +08:00

example_mutex.c

Fix the warnings raised by Sparse (#92)

2021-09-04 17:53:29 +08:00

example_rwlock.c

Fix the warnings raised by Sparse (#92)

2021-09-04 17:53:29 +08:00

example_spinlock.c

Fix the warnings raised by Sparse (#92)

2021-09-04 17:53:29 +08:00

example_tasklet.c

Fix the warnings raised by Sparse (#92)

2021-09-04 17:53:29 +08:00

hello-1.c

Mention pr_info() rather than KERN_INFO

2021-08-16 21:53:22 +02:00

hello-2.c

Enforce Linux kernel coding style (#88)

2021-09-02 15:15:07 +08:00

hello-3.c

Enforce Linux kernel coding style (#88)

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hello-4.c

Enforce Linux kernel coding style (#88)

2021-09-02 15:15:07 +08:00

hello-5.c

Enforce Linux kernel coding style (#88)

2021-09-02 15:15:07 +08:00

hello-sysfs.c

Enforce Linux kernel coding style (#88)

2021-09-02 15:15:07 +08:00

intrpt.c

Enforce Linux kernel coding style (#88)

2021-09-02 15:15:07 +08:00

ioctl.c

CI: Run static analysis with Cppcheck (#105)

2021-09-14 00:52:04 +08:00

kbleds.c

Adapt the timer API Usage (#98)

2021-09-10 12:29:48 +08:00

Makefile

Improve CI pipeline to automate module testing (#95)

2021-09-08 20:38:50 +08:00

print_string.c

Enforce Linux kernel coding style (#88)

2021-09-02 15:15:07 +08:00

procfs1.c

Fix the warnings raised by Sparse (#92)

2021-09-04 17:53:29 +08:00

procfs2.c

Fix the warnings raised by Sparse (#92)

2021-09-04 17:53:29 +08:00

procfs3.c

Fix the warnings raised by Sparse (#92)

2021-09-04 17:53:29 +08:00

procfs4.c

suppress warning: no newline at end of file

2021-09-08 22:23:02 +08:00

sched.c

Enforce Linux kernel coding style (#88)

2021-09-02 15:15:07 +08:00

sleep.c

Avoid unexpected concurrent access (#94)

2021-09-07 23:42:06 +08:00

start.c

Apply editorial changes

2021-08-08 01:24:59 +08:00

stop.c

Fix the warnings raised by Sparse (#92)

2021-09-04 17:53:29 +08:00

syscall.c

Fix the warnings raised by Sparse (#92)

2021-09-04 17:53:29 +08:00