Bug#1008507: libc6: pathconf("mountpont of FAT filesystem", _PC_LINK_MAX) returns 127, expected 1
Package: libc6
Version: All of them
Severity: normal
Tags: newcomer
Dear Maintainer,
what lead up to the situation is well-described in my stackoverflow post:
https://stackoverflow.com/questions/71641957/how-to-check-if-a-filesystem-supports-hard-links-in-linux
Since posting it, I have traced the bug through the glibc sources and found that it's bugged.
There's cases for common filesystems that have nonstandard values, but you almost never care
what the actual value is.
On the other hand, there are no cases for writable filesystems that simply don't have hard links.
(FAT). EXFAT would also fall into this but that only exists as a FUSE module right now.
These turn out to be the ones we care about becasue they are three of the four widely supported
filesystems on removable media (with the fourth being UDF).
Writing a patch is trivial. Getting it into glibc, well I'm gonna try but you may have more luck.
-- System Information:
Debian Release: 10.11
APT prefers oldstable-updates
APT policy: (500, 'oldstable-updates'), (500, 'oldstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.19.0-18-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1), LANGUAGE=en_US (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit-sysv
LSM: AppArmor: enabled
Reply to: