The patch titled
Subject: lib/string.c: introduce strreplace()
has been added to the -mm tree. Its filename is
lib-string-introduce-strreplace.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/lib-string-introduce-strreplace.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/lib-string-introduce-strreplace.patch
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------------------------------------------------------
From: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Subject: lib/string.c: introduce strreplace()
Strings are sometimes sanitized by replacing a certain character (often
'/') by another (often '!'). In a few places, this is done the same way
Schlemiel the Painter would do it. Others are slightly smarter but still
do multiple strchr() calls. Introduce strreplace() to do this using a
single function call and a single pass over the string.
One would expect the return value to be one of three things: void, s, or
the number of replacements made. I chose the fourth, returning a pointer
to the end of the string. This is more likely to be useful (for example
allowing the caller to avoid a strlen call).
Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Cc: "Theodore Ts'o" <tytso@xxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Neil Brown <neilb@xxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Joe Perches <joe@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/string.h | 1 +
lib/string.c | 17 +++++++++++++++++
2 files changed, 18 insertions(+)
diff -puN include/linux/string.h~lib-string-introduce-strreplace include/linux/string.h
--- a/include/linux/string.h~lib-string-introduce-strreplace
+++ a/include/linux/string.h
@@ -111,6 +111,7 @@ extern int memcmp(const void *,const voi
extern void * memchr(const void *,int,__kernel_size_t);
#endif
void *memchr_inv(const void *s, int c, size_t n);
+char *strreplace(char *s, char old, char new);
extern void kfree_const(const void *x);
diff -puN lib/string.c~lib-string-introduce-strreplace lib/string.c
--- a/lib/string.c~lib-string-introduce-strreplace
+++ a/lib/string.c
@@ -849,3 +849,20 @@ void *memchr_inv(const void *start, int
return check_bytes8(start, value, bytes % 8);
}
EXPORT_SYMBOL(memchr_inv);
+
+/**
+ * strreplace - Replace all occurrences of character in string.
+ * @s: The string to operate on.
+ * @old: The character being replaced.
+ * @new: The character @old is replaced with.
+ *
+ * Returns pointer to the nul byte at the end of @s.
+ */
+char *strreplace(char *s, char old, char new)
+{
+ for (; *s; ++s)
+ if (*s == old)
+ *s = new;
+ return s;
+}
+EXPORT_SYMBOL(strreplace);
_
Patches currently in -mm which might be from linux@xxxxxxxxxxxxxxxxxx are
linux-slabh-fix-three-off-by-one-typos-in-comment.patch
mm-only-define-hashdist-variable-when-needed.patch
__bitmap_parselist-fix-bug-in-empty-string-handling.patch
lib-sort-add-64-bit-swap-function.patch
lib-sort-add-64-bit-swap-function-v2.patch
lib-sort-add-64-bit-swap-function-v2-fix.patch
lib-string-introduce-strreplace.patch
kernel-trace-trace_events_filterc-use-strreplace.patch
blktrace-use-strreplace-in-do_blk_trace_setup.patch
lib-kobjectc-use-strreplace.patch
drivers-base-corec-use-strreplace.patch
drivers-md-mdc-use-strreplace.patch
fs-jbd2-journalc-use-strreplace.patch
fs-ext4-superc-use-strreplace-in-ext4_fill_super.patch
checkpatch-avoid-not_unified_diff-errors-on-cover-letterpatch-files.patch
linux-next.patch
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