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authorRasmus Villemoes <linux@rasmusvillemoes.dk>2015-06-26 01:02:22 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-26 03:00:40 +0300
commit94df290404cd0da8016698bf3f398410f29d9a64 (patch)
tree3a1af17ab47e65b86d51f3d6511b1f5dc0ed4bc0 /include/linux/string.h
parent9d2a8da006fcbf2dea663c095f0a0088dfbbec15 (diff)
downloadlinux-94df290404cd0da8016698bf3f398410f29d9a64.tar.xz
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@rasmusvillemoes.dk> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Neil Brown <neilb@suse.de> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/string.h')
-rw-r--r--include/linux/string.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/string.h b/include/linux/string.h
index e40099e585c9..a8d90db9c4b0 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -111,6 +111,7 @@ extern int memcmp(const void *,const void *,__kernel_size_t);
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);