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authorMasahiro Yamada <yamada.m@jp.panasonic.com>2014-11-20 21:20:32 +0900
committerSimon Glass <sjg@chromium.org>2014-12-11 13:18:41 -0700
commit80d9ef8d40b2aa35c4a3483f5cf3549215187a7c (patch)
tree15663071cb0f6fc98f997053ee36f676d548fe4f /lib/string.c
parent9b416a9f4ca7cf5ac4d5f7143d67edde7f7d7326 (diff)
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lib: string: move strlcpy() to a common place
Move strlcpy() definition from drivers/usb/gadget/ether.c to lib/string.c because it is a very useful function. Let's add the prototype to include/linux/string.h too. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'lib/string.c')
-rw-r--r--lib/string.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/lib/string.c b/lib/string.c
index 29c2ca7..87c9a40 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -102,6 +102,31 @@ char * strncpy(char * dest,const char *src,size_t count)
}
#endif
+#ifndef __HAVE_ARCH_STRLCPY
+/**
+ * strlcpy - Copy a C-string into a sized buffer
+ * @dest: Where to copy the string to
+ * @src: Where to copy the string from
+ * @size: size of destination buffer
+ *
+ * Compatible with *BSD: the result is always a valid
+ * NUL-terminated string that fits in the buffer (unless,
+ * of course, the buffer size is zero). It does not pad
+ * out the result like strncpy() does.
+ */
+size_t strlcpy(char *dest, const char *src, size_t size)
+{
+ size_t ret = strlen(src);
+
+ if (size) {
+ size_t len = (ret >= size) ? size - 1 : ret;
+ memcpy(dest, src, len);
+ dest[len] = '\0';
+ }
+ return ret;
+}
+#endif
+
#ifndef __HAVE_ARCH_STRCAT
/**
* strcat - Append one %NUL-terminated string to another