vfs: ignore EPERM at os.utime, which avoids ambiguity at renaming (issue5418)
According to POSIX specification, just having group write access to a
file causes EPERM at invocation of os.utime() with an explicit time
information (e.g. working on the repository shared by group access
permission).
To ignore EPERM at renaming in such case, this patch makes
vfs.rename() use filestat.avoidambig() introduced by previous patch.
--- a/mercurial/scmutil.py Sun Nov 13 06:06:23 2016 +0900
+++ b/mercurial/scmutil.py Sun Nov 13 06:11:56 2016 +0900
@@ -390,8 +390,7 @@
newstat = util.filestat(dstpath)
if newstat.isambig(oldstat):
# stat of renamed file is ambiguous to original one
- advanced = (oldstat.stat.st_mtime + 1) & 0x7fffffff
- os.utime(dstpath, (advanced, advanced))
+ newstat.avoidambig(dstpath, oldstat)
return ret
return util.rename(self.join(src), dstpath)