From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Saravana Kannan <saravanak@google.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Stephen Boyd <sboyd@kernel.org>,
Dario Binacchi <dario.binacchi@amarulasolutions.com>,
Tony Lindgren <tony@atomide.com>,
linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org,
linux-tegra@vger.kernel.org, linux-omap@vger.kernel.org
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
Peter De Schrijver <pdeschrijver@nvidia.com>,
Prashant Gaikwad <pgaikwad@nvidia.com>,
Michael Turquette <mturquette@baylibre.com>,
Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Tero Kristo <kristo@kernel.org>,
Andy Shevchenko <andy@kernel.org>
Subject: [PATCH v1 1/4] lib/string_helpers: Add kstrdup_and_replace() helper
Date: Wed, 28 Jun 2023 18:32:08 +0300 [thread overview]
Message-ID: <20230628153211.52988-2-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20230628153211.52988-1-andriy.shevchenko@linux.intel.com>
Duplicate a NULL-terminated string and replace all occurrences of
the old character with a new one. In other words, provide functionality
of kstrdup() + strreplace().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
include/linux/string_helpers.h | 2 ++
lib/string_helpers.c | 15 +++++++++++++++
2 files changed, 17 insertions(+)
diff --git a/include/linux/string_helpers.h b/include/linux/string_helpers.h
index 789ab30045da..9d1f5bb74dd5 100644
--- a/include/linux/string_helpers.h
+++ b/include/linux/string_helpers.h
@@ -109,6 +109,8 @@ char *kstrdup_quotable(const char *src, gfp_t gfp);
char *kstrdup_quotable_cmdline(struct task_struct *task, gfp_t gfp);
char *kstrdup_quotable_file(struct file *file, gfp_t gfp);
+char *kstrdup_and_replace(const char *src, char old, char new, gfp_t gfp);
+
char **kasprintf_strarray(gfp_t gfp, const char *prefix, size_t n);
void kfree_strarray(char **array, size_t n);
diff --git a/lib/string_helpers.c b/lib/string_helpers.c
index d3b1dd718daf..9982344cca34 100644
--- a/lib/string_helpers.c
+++ b/lib/string_helpers.c
@@ -719,6 +719,21 @@ char *kstrdup_quotable_file(struct file *file, gfp_t gfp)
}
EXPORT_SYMBOL_GPL(kstrdup_quotable_file);
+/*
+ * Returns duplicate string in which the @old characters are replaced by @new.
+ */
+char *kstrdup_and_replace(const char *src, char old, char new, gfp_t gfp)
+{
+ char *dst;
+
+ dst = kstrdup(src, gfp);
+ if (!dst)
+ return NULL;
+
+ return strreplace(dst, old, new);
+}
+EXPORT_SYMBOL_GPL(kstrdup_and_replace);
+
/**
* kasprintf_strarray - allocate and fill array of sequential strings
* @gfp: flags for the slab allocator
--
2.40.0.1.gaa8946217a0b
next prev parent reply other threads:[~2023-06-28 15:32 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-28 15:32 [PATCH v1 0/4] clk: Add kstrdup_and_replace() helper and use it Andy Shevchenko
2023-06-28 15:32 ` Andy Shevchenko [this message]
2023-06-28 15:32 ` [PATCH v1 2/4] driver core: Replace kstrdup() + strreplace() with kstrdup_and_replace() Andy Shevchenko
2023-08-04 14:10 ` Greg Kroah-Hartman
2023-08-04 14:30 ` Andy Shevchenko
2023-08-04 14:46 ` Andy Shevchenko
2023-06-28 15:32 ` [PATCH v1 3/4] clk: tegra: " Andy Shevchenko
2023-06-28 15:32 ` [PATCH v1 4/4] clk: ti: " Andy Shevchenko
[not found] ` <ad13bab23313ca4bdfd405528a76ac37.sboyd@kernel.org>
2023-07-20 8:32 ` [PATCH v1 0/4] clk: Add kstrdup_and_replace() helper and use it Andy Shevchenko
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