From ce99091730c92bf560712baa0696ea5a461b1fe8 Mon Sep 17 00:00:00 2001 From: Josh Poimboeuf Date: Tue, 15 Dec 2015 09:39:33 -0600 Subject: 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 Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/71e2804b973bf39ad3d3b9be10f99f2ea630be46.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/string.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'tools/lib/string.c') 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 #include #include +#include /** * 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; +} -- cgit v1.2.3-59-g8ed1b