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authorJosh Poimboeuf <jpoimboe@redhat.com>2015-12-15 09:39:33 -0600
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-12-16 16:09:39 -0300
commitce99091730c92bf560712baa0696ea5a461b1fe8 (patch)
tree98730b87cc0131c5d213625d67fe8ba6f58f492a /tools/lib
parent1925459b4d92d92e62d67ddc763cda650d2aa79c (diff)
perf tools: Move strlcpy() from perf to tools/lib/string.c
strlcpy() will be needed by the subcmd library. Move it to the shared tools/lib/string.c file which can be used by other tools. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/71e2804b973bf39ad3d3b9be10f99f2ea630be46.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib')
-rw-r--r--tools/lib/string.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/tools/lib/string.c b/tools/lib/string.c
index 065e54f42d8f..bd239bc1d557 100644
--- a/tools/lib/string.c
+++ b/tools/lib/string.c
@@ -16,6 +16,7 @@
#include <string.h>
#include <errno.h>
#include <linux/string.h>
+#include <linux/compiler.h>
/**
* memdup - duplicate region of memory
@@ -60,3 +61,29 @@ int strtobool(const char *s, bool *res)
}
return 0;
}
+
+/**
+ * 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.
+ *
+ * If libc has strlcpy() then that version will override this
+ * implementation:
+ */
+size_t __weak 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;
+}