1 files changed, 46 insertions, 3 deletions

diff --git a/checkout-cache.c b/checkout-cache.c
index b561ef487e..18729374fc 100644
--- a/checkout-cache.c
+++ b/checkout-cache.c
@@ -32,6 +32,8 @@
  * of "-a" causing problems (not possible in the above example,
  * but get used to it in scripting!).
  */
+#include <sys/types.h>
+#include <dirent.h>
 #include "cache.h"
 
 static int force = 0, quiet = 0, not_new = 0;
@@ -46,20 +48,61 @@ static void create_directories(const char *path)
 		len = slash - path;
 		memcpy(buf, path, len);
 		buf[len] = 0;
-		mkdir(buf, 0755);
+		if (mkdir(buf, 0755)) {
+			if (errno == EEXIST) {
+				struct stat st;
+				if (!lstat(buf, &st) && S_ISDIR(st.st_mode))
+					continue; /* ok */
+				if (force && !unlink(buf) && !mkdir(buf, 0755))
+					continue;
+			}
+			die("cannot create directory at %s", buf);
+		}
 	}
 	free(buf);
 }
 
+static void remove_subtree(const char *path)
+{
+	DIR *dir = opendir(path);
+	struct dirent *de;
+	char pathbuf[PATH_MAX];
+	char *name;
+	
+	if (!dir)
+		die("cannot opendir %s", path);
+	strcpy(pathbuf, path);
+	name = pathbuf + strlen(path);
+	*name++ = '/';
+	while ((de = readdir(dir)) != NULL) {
+		struct stat st;
+		if ((de->d_name[0] == '.') &&
+		    ((de->d_name[1] == 0) ||
+		     ((de->d_name[1] == '.') && de->d_name[2] == 0)))
+			continue;
+		strcpy(name, de->d_name);
+		if (lstat(pathbuf, &st))
+			die("cannot lstat %s", pathbuf);
+		if (S_ISDIR(st.st_mode))
+			remove_subtree(pathbuf);
+		else if (unlink(pathbuf))
+			die("cannot unlink %s", pathbuf);
+	}
+	closedir(dir);
+	if (rmdir(path))
+		die("cannot rmdir %s", path);
+}
+
 static int create_file(const char *path, unsigned int mode)
 {
 	int fd;
 
 	mode = (mode & 0100) ? 0777 : 0666;
+	create_directories(path);
 	fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode);
 	if (fd < 0) {
-		if (errno == ENOENT) {
-			create_directories(path);
+		if (errno == EISDIR && force) {
+			remove_subtree(path);
 			fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode);
 		}
 	}