From: Chuhong Yuan <hslester96@gmail.com>
Cc: Len Brown <len.brown@intel.com>, Petr Mladek <pmladek@suse.com>,
Peter Zijlstra <peterz@infradead.org>,
Chuhong Yuan <hslester96@gmail.com>,
linux-pm@vger.kernel.org,
"Rafael J . Wysocki" <rjw@rjwysocki.net>,
linux-kernel@vger.kernel.org,
Steven Rostedt <rostedt@goodmis.org>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
iommu@lists.linux-foundation.org, Ingo Molnar <mingo@redhat.com>,
Pavel Machek <pavel@ucw.cz>, Jessica Yu <jeyu@kernel.org>,
Joe Perches <joe@perches.com>,
Robin Murphy <robin.murphy@arm.com>,
Christoph Hellwig <hch@lst.de>
Subject: [PATCH v3 0/8] Replace strncmp with str_has_prefix
Date: Mon, 5 Aug 2019 20:22:04 +0800 [thread overview]
Message-ID: <20190805122204.12823-1-hslester96@gmail.com> (raw)
The commit 72921427d46b
("string.h: Add str_has_prefix() helper function")
introduced str_has_prefix() to substitute error-prone
strncmp(str, const, len).
strncmp(str, const, len) is easy to have error in len
because of counting error or sizeof(const) without - 1.
These patches replace such pattern with str_has_prefix()
to avoid hard coded constant length and sizeof.
Besides, str_has_prefix() returns the length of prefix
when the comparison returns true.
We can use this return value to substitute some hard-coding.
Changelog:
v1 -> v2:
- Revise the description.
- Use the return value of str_has_prefix() to eliminate
hard coding.
- Remove possible false positives and add newly detected
one in upstream.
v2 -> v3:
- Revise the description.
- Remove else uses in printk.c.
Chuhong Yuan (8):
dma: debug: Replace strncmp with str_has_prefix
module: Replace strncmp with str_has_prefix
PM/sleep: Replace strncmp with str_has_prefix
printk: Replace strncmp with str_has_prefix
reboot: Replace strncmp with str_has_prefix
sched: Replace strncmp with str_has_prefix
userns: Replace strncmp with str_has_prefix
watchdog: Replace strncmp with str_has_prefix
kernel/dma/debug.c | 2 +-
kernel/module.c | 2 +-
kernel/power/main.c | 2 +-
kernel/printk/braille.c | 10 ++++++----
kernel/printk/printk.c | 19 +++++++++++++------
kernel/reboot.c | 6 ++++--
kernel/sched/debug.c | 5 +++--
kernel/sched/isolation.c | 9 +++++----
kernel/user_namespace.c | 10 +++++-----
kernel/watchdog.c | 8 ++++----
10 files changed, 43 insertions(+), 30 deletions(-)
--
2.20.1
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