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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2023-08-04 17:39:07 +0300
committerStephen Boyd <sboyd@kernel.org>2023-08-04 18:21:50 -0700
commit045ad46441a1cf2ff358af0126f8c57f337804fa (patch)
tree0d8745d448f22648486c123c18e055aef20be105 /lib/string_helpers.c
parent06c2afb862f9da8dc5efa4b6076a0e48c3fbaaa5 (diff)
lib/string_helpers: Add kstrdup_and_replace() helper
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> Link: https://lore.kernel.org/r/20230804143910.15504-2-andriy.shevchenko@linux.intel.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'lib/string_helpers.c')
-rw-r--r--lib/string_helpers.c15
1 files changed, 15 insertions, 0 deletions
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