On Sat, Feb 13, 2021 at 8:56 PM Tiago Daitx <tiago.da...@canonical.com> wrote: > > Hi, > > This particular exception is being thrown by the call to unlinkat [1] > which calls native unlinkat. Man page for unlinkat describes EISDIR > error [2] as: > "EISDIR pathname refers to a directory, and AT_REMOVEDIR was not > specified in flags." > > Assuming unlinkat is telling the truth and this is indeed a directory, > it can be seen from the stacktrace that deleteRecursivelySecure is > calling deleteFile [3] instead of deleteDir (deleteDir does set > AT_REMOVERDIR). > > This seems to indicate that the isDirectory call [4] is getting wrong > file attributes. Following the trail, those file attributes come from > a fstatat call [5] which ultimately come from the native stack in > UnixNativeDispatcher.c [6]. The actual way that fstatat is called > depends on the build flags and defines from the arch, so somebody with > better knowledge might want to take a look at UnixNativeDispatcher.c > [6] and tell if OpenJDK is picking the right function to call for > mips64el. > > References: > [1] unlinkat call > https://sources.debian.org/src/openjdk-11/11.0.10+9-1/src/java.base/unix/classes/sun/nio/fs/UnixSecureDirectoryStream.java/#L200 > [2] EISDIR in OpenJDK: > https://sources.debian.org/src/openjdk-11/11.0.10+9-1/src/hotspot/share/runtime/os.cpp/#L1504 > [3] > https://salsa.debian.org/java-team/guava-libraries/-/blob/master/guava/src/com/google/common/io/MoreFiles.java#L630 > [4] > https://salsa.debian.org/java-team/guava-libraries/-/blob/master/guava/src/com/google/common/io/MoreFiles.java#L335 > [5] > https://sources.debian.org/src/openjdk-11/11.0.10+9-1/src/java.base/unix/classes/sun/nio/fs/UnixFileAttributes.java/#L90
I missed the most important reference [6] https://sources.debian.org/src/openjdk-11/11.0.10+9-1/src/java.base/unix/native/libnio/fs/UnixNativeDispatcher.c/ -- Tiago Stürmer Daitx Software Engineer tiago.da...@canonical.com PGP Key: 4096R/F5B213BE (hkp://keyserver.ubuntu.com) Fingerprint = 45D0 FE5A 8109 1E91 866E 8CA4 1931 8D5E F5B2 13BE
