EDOTDOT
Linux / POSIXERRORCriticalFilesystemHIGH confidence
RFS Specific Error
Production Risk
Very rare; RFS-specific, not seen on modern Linux.
What this means
EDOTDOT (errno 73) is an RFS (Remote File Sharing) specific error related to ".." directory entry handling in distributed filesystems.
Why it happens
- 1RFS-specific ".." directory traversal error
How to reproduce
RFS directory traversal error (historical).
trigger — this will error
trigger — this will error
// errno = EDOTDOT from RFS ".." handling
expected output
RFS specific error (EDOTDOT)
Fix
Use NFS instead of RFS
WHEN On modern Linux systems
Use NFS instead of RFS
# RFS is obsolete — use NFS mount -t nfs server:/export /mnt
Why this works
RFS is a historical UNIX mechanism; NFS handles ".." traversal correctly.
Sources
Official documentation ↗
Linux Programmer Manual errno(3)
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