systemd/0012-util-try-to-be-a-bit-more-NFS-compatible-when-checki.patch

37 lines
1.1 KiB
Diff

From 70421bdce2719d76efffd8afdc28433c75aac5a2 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 18 Aug 2014 23:15:51 +0200
Subject: [PATCH] util: try to be a bit more NFS compatible when checking
whether an FS is writable
https://bugs.freedesktop.org/show_bug.cgi?id=81169
---
src/shared/path-util.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git src/shared/path-util.c src/shared/path-util.c
index 57554cd..67566bc 100644
--- src/shared/path-util.c
+++ src/shared/path-util.c
@@ -533,7 +533,16 @@ int path_is_read_only_fs(const char *path) {
if (statvfs(path, &st) < 0)
return -errno;
- return !!(st.f_flag & ST_RDONLY);
+ if (st.f_flag & ST_RDONLY)
+ return true;
+
+ /* On NFS, statvfs() might not reflect whether we can actually
+ * write to the remote share. Let's try again with
+ * access(W_OK) which is more reliable, at least sometimes. */
+ if (access(path, W_OK) < 0 && errno == EROFS)
+ return true;
+
+ return false;
}
int path_is_os_tree(const char *path) {
--
1.7.9.2