X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Ftal%2Fpath%2Fpath.c;h=b50120667c0759649d35292578f627ef644988c3;hb=7d1f0c73e4d321561abb74f82c8be97f10d69836;hp=e6e94dbe080dca24fcdb5ec02a4701381029647b;hpb=15ed4f453713f1a7bdeec22b53704819fa3d447f;p=ccan

diff --git a/ccan/tal/path/path.c b/ccan/tal/path/path.c
index e6e94dbe..b5012066 100644
--- a/ccan/tal/path/path.c
+++ b/ccan/tal/path/path.c
@@ -1,7 +1,6 @@
 /* Licensed under BSD-MIT - see LICENSE file for details */
 #include <ccan/tal/path/path.h>
 #include <ccan/str/str.h>
-#include <ccan/take/take.h>
 #include <ccan/tal/str/str.h>
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -12,9 +11,6 @@
 #include <errno.h>
 #include <assert.h>
 
-#define PATH_SEP_STR "/"
-#define PATH_SEP (PATH_SEP_STR[0])
-
 char *path_cwd(const tal_t *ctx)
 {
 	size_t len = 64;
@@ -50,10 +46,10 @@ char *path_join(const tal_t *ctx, const char *base, const char *a)
 		goto out;
 
 	len = strlen(base);
-	ret = tal_dup(ctx, char, base, len, 1 + strlen(a) + 1);
+	ret = tal_dup_arr(ctx, char, base, len, 1 + strlen(a) + 1);
 	if (!ret)
 		goto out;
-	if (ret[len-1] != PATH_SEP)
+	if (len != 0 && ret[len-1] != PATH_SEP)
 		ret[len++] = PATH_SEP;
 	strcpy(ret + len, a);
 
@@ -244,8 +240,10 @@ char *path_rel(const tal_t *ctx, const char *from, const char *to)
 
 	/* This frees to if we're supposed to take it. */
 	cto = path_canon(tmpctx, to);
-	if (!cto)
+	if (!cto) {
+		ret = NULL;
 		goto out;
+	}
 
 	/* How much is in common? */
 	for (common = i = 0; cfrom[i] && cto[i]; i++) {
@@ -323,7 +321,9 @@ fail_take_to:
 			goto fail;
 	}
 
-	ret[len] = '\0';
+	if (ret)
+		ret[len] = '\0';
+
 out:
 	if (taken(linkname))
 		tal_free(linkname);
@@ -461,7 +461,7 @@ char *path_basename(const tal_t *ctx, const char *path)
 static char *fixed_string(const tal_t *ctx,
 			  const char *str, const char *path)
 {
-	char *ret = tal_dup(ctx, char, path, 0, strlen(str)+1);
+	char *ret = tal_dup_arr(ctx, char, path, 0, strlen(str)+1);
 	if (ret)
 		strcpy(ret, str);
 	return ret;