[PATCH 6/5] NUL hack to create_file()
From: Junio C Hamano <hidden>
Date: 2016-06-15 22:44:39
Subsystem:
the rest · Maintainer:
Linus Torvalds
This is not meant for application to the mainline. It allows your git to refuse to create a blob whose name is "nul". --- entry.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/entry.c b/entry.c
index 222aaa3..d24b803 100644
--- a/entry.c
+++ b/entry.c@@ -81,6 +81,14 @@ static void remove_subtree(const char *path) static int create_file(const char *path, unsigned int mode) { + if (1) { + size_t len = strlen(path); + if (3 <= len && !strcmp(path + len - 3, "nul") && + (3 == len || path[len - 4] == '/')) { + errno = EPERM; + return -1; + } + } mode = (mode & 0100) ? 0777 : 0666; return open(path, O_WRONLY | O_CREAT | O_EXCL, mode); }
--
1.5.6.rc0.43.g823ea