[tip:perf/core] perf tools: Move strlcpy() from perf to tools/lib /string.c

tip-bot for Josh Poimboeuf
2015-12-18T08:52:59Z

Commit-ID: ce99091730c92bf560712baa0696ea5a461b1fe8
Gitweb: http://git.kernel.org/tip/ce99091730c92bf560712baa0696ea5a461b1fe8
Author: Josh Poimboeuf <jpoimboe@redhat.com>
AuthorDate: Tue, 15 Dec 2015 09:39:33 -0600
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 16 Dec 2015 16:09:39 -0300

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>
---
tools/include/linux/string.h | 4 ++++
tools/lib/string.c | 27 +++++++++++++++++++++++++++
tools/perf/util/cache.h | 7 ++-----
tools/perf/util/path.c | 18 ------------------
4 files changed, 33 insertions(+), 23 deletions(-)

diff --git a/tools/include/linux/string.h b/tools/include/linux/string.h
index 2e2f736..e26223f 100644
--- a/tools/include/linux/string.h
+++ b/tools/include/linux/string.h
@@ -8,4 +8,8 @@ void *memdup(const void *src, size_t len);

int strtobool(const char *s, bool *res);

+#ifndef __UCLIBC__
+extern size_t strlcpy(char *dest, const char *src, size_t size);
+#endif
+
#endif /* _LINUX_STRING_H_ */
diff --git a/tools/lib/string.c b/tools/lib/string.c
index 065e54f..bd239bc 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;
+}
diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h
index 9ca4a58..d723ecb 100644
--- a/tools/perf/util/cache.h
+++ b/tools/perf/util/cache.h
@@ -8,6 +8,8 @@
#include "../perf.h"
#include "../ui/ui.h"

+#include <linux/string.h>
+
#define CMD_EXEC_PATH "--exec-path"
#define CMD_PERF_DIR "--perf-dir="
#define CMD_WORK_TREE "--work-tree="
@@ -67,9 +69,4 @@ extern char *perf_path(const char *fmt, ...) __attribute__((format (printf, 1, 2
extern char *perf_pathdup(const char *fmt, ...)
__attribute__((format (printf, 1, 2)));

-#ifndef __UCLIBC__
-/* Matches the libc/libbsd function attribute so we declare this unconditionally: */
-extern size_t strlcpy(char *dest, const char *src, size_t size);
-#endif
-
#endif /* __PERF_CACHE_H */
diff --git a/tools/perf/util/path.c b/tools/perf/util/path.c
index 5d13cb4..3654d96 100644
--- a/tools/perf/util/path.c
+++ b/tools/perf/util/path.c
@@ -22,24 +22,6 @@ static const char *get_perf_dir(void)
return ".";
}

-/*
- * 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;
-}
-
static char *get_pathname(void)
{
static char pathname_array[4][PATH_MAX];