setup: fix windows path buffer over-stepping

[thirdparty/git.git] / sha1_file.c

diff --git a/sha1_file.c b/sha1_file.c
index f80bbe467437a4ffc161a4cdd09f97cf5436d4f9..760dd60031bc4de7f0155303da5938c1571a2378 100644 (file)
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -2483,15 +2483,18 @@ static int sha1_loose_object_info(const unsigned char *sha1,
 
        /*
         * If we don't care about type or size, then we don't
-        * need to look inside the object at all.
+        * need to look inside the object at all. Note that we
+        * do not optimize out the stat call, even if the
+        * caller doesn't care about the disk-size, since our
+        * return value implicitly indicates whether the
+        * object even exists.
         */
        if (!oi->typep && !oi->sizep) {
-               if (oi->disk_sizep) {
-                       struct stat st;
-                       if (stat_sha1_file(sha1, &st) < 0)
-                               return -1;
+               struct stat st;
+               if (stat_sha1_file(sha1, &st) < 0)
+                       return -1;
+               if (oi->disk_sizep)
                        *oi->disk_sizep = st.st_size;
-               }
                return 0;
        }
 
@@ -2514,7 +2517,6 @@ static int sha1_loose_object_info(const unsigned char *sha1,
        return 0;
 }
 
-/* returns enum object_type or negative */
 int sha1_object_info_extended(const unsigned char *sha1, struct object_info *oi)
 {
        struct cached_object *co;
@@ -2563,6 +2565,7 @@ int sha1_object_info_extended(const unsigned char *sha1, struct object_info *oi)
        return 0;
 }
 
+/* returns enum object_type or negative */
 int sha1_object_info(const unsigned char *sha1, unsigned long *sizep)
 {
        enum object_type type;
@@ -2857,7 +2860,9 @@ static int create_tmpfile(char *buffer, size_t bufsiz, const char *filename)
                /* Make sure the directory exists */
                memcpy(buffer, filename, dirlen);
                buffer[dirlen-1] = 0;
-               if (mkdir(buffer, 0777) || adjust_shared_perm(buffer))
+               if (mkdir(buffer, 0777) && errno != EEXIST)
+                       return -1;
+               if (adjust_shared_perm(buffer))
                        return -1;
 
                /* Try again */