Use sha1_file.c's mkdir-like routine in apply.c.

As far as I can see, create_subdirectories() in apply.c just
duplicates the functionality of safe_create_leading_directories() from
sha1_file.c.  The former has a warm, fuzzy const parameter, but that's
not important.

The potential problem with EEXIST and creating directories should
never occur here, but will be removed by future
safe_create_leading_directories() changes.  Other uses of EEXIST in
apply.c should be fine barring intentionally malicious behavior.

Signed-off-by: Jason Riedy <ejr@cs.berkeley.edu>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/apply.c b/apply.c
index 79e23a7..2ad47fb 100644 (file)
--- a/apply.c
+++ b/apply.c
@@ -1564,24 +1564,6 @@ static void add_index_file(const char *path, unsigned mode, void *buf, unsigned
                die("unable to add cache entry for %s", path);
 }
 
-static void create_subdirectories(const char *path)
-{
-       int len = strlen(path);
-       char *buf = xmalloc(len + 1);
-       const char *slash = path;
-
-       while ((slash = strchr(slash+1, '/')) != NULL) {
-               len = slash - path;
-               memcpy(buf, path, len);
-               buf[len] = 0;
-               if (mkdir(buf, 0777) < 0) {
-                       if (errno != EEXIST)
-                               break;
-               }
-       }
-       free(buf);
-}
-
 static int try_create_file(const char *path, unsigned int mode, const char *buf, unsigned long size)
 {
        int fd;
@@ -1610,13 +1592,14 @@ static int try_create_file(const char *path, unsigned int mode, const char *buf,
  * which is true 99% of the time anyway. If they don't,
  * we create them and try again.
  */
-static void create_one_file(const char *path, unsigned mode, const char *buf, unsigned long size)
+static void create_one_file(char *path, unsigned mode, const char *buf, unsigned long size)
 {
        if (!try_create_file(path, mode, buf, size))
                return;
 
        if (errno == ENOENT) {
-               create_subdirectories(path);
+               if (safe_create_leading_directories(path))
+                       return;
                if (!try_create_file(path, mode, buf, size))
                        return;
        }
@@ -1643,7 +1626,7 @@ static void create_one_file(const char *path, unsigned mode, const char *buf, un
 
 static void create_file(struct patch *patch)
 {
-       const char *path = patch->new_name;
+       char *path = patch->new_name;
        unsigned mode = patch->new_mode;
        unsigned long size = patch->resultsize;
        char *buf = patch->result;