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symbolic links from /linuxrc -> /bin/busybox in host filesystem breaks many applications #494

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jyelloz opened this issue Jan 18, 2017 · 1 comment
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symbolic links from /linuxrc -> /bin/busybox in host filesystem breaks many applications #494

jyelloz opened this issue Jan 18, 2017 · 1 comment

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@jyelloz
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jyelloz commented Jan 18, 2017

I was trying to run org.gnome.Builder and org.gnome.gitg in flatpak 0.8.1 and encountered the failure:

flatpak run org.gnome.gitg
Can't create file at /bin/busybox: Read-only file system

It turns out I had a symbolic link at /linuxrc that pointed to /bin/busybox. Once I removed /linuxrc things worked normally.

I have tested putting a symbolic link with any filename (such as /testfile, /abc, etc.) in my host filesystem root and pointing it to /bin/busybox will cause the same failure. Pointing any link in the host FS root directory to something like /bin/ls or /bin/yes doesn't seem to break things, though.
TingPing added a commit to TingPing/flatpak that referenced this issue Jan 18, 2017
@TingPing
run: Fix matching symlinks against host directory blacklist
2aca2d7 
Fixes flatpak#494
@TingPing TingPing mentioned this issue Jan 18, 2017
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TingPing added a commit to TingPing/flatpak that referenced this issue Jan 18, 2017
@TingPing
run: Fix matching symlinks against host directory blacklist
46f0149 
Fixes flatpak#494
TingPing added a commit to TingPing/flatpak that referenced this issue Jan 18, 2017
@TingPing
run: Fix matching symlinks against host directory blacklist
fe36a01 
Fixes flatpak#494
@jyelloz
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jyelloz commented Jan 18, 2017

I've applied the patch from #495 against flatpak 0.8.1 and it works for me.

alexlarsson added a commit that referenced this issue Jan 19, 2017
@alexlarsson
Don't break if exporting paths or symlinks to files in the runtime
e5346b7 
For instance like in #494
if there is a /linuxrc -> /bin/busybox symlink, and /bin/busybox
is not in the runtime then we will fail creating it as a mountpoint
for the bind mount.

Fixes #494

(cherry picked from commit 592bea2)
matthiasclasen pushed a commit to matthiasclasen/flatpak that referenced this issue Feb 21, 2017
@alexlarsson
Don't break if exporting paths or symlinks to files in the runtime
d3aef1b 
For instance like in flatpak#494
if there is a /linuxrc -> /bin/busybox symlink, and /bin/busybox
is not in the runtime then we will fail creating it as a mountpoint
for the bind mount.

Fixes flatpak#494
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@jyelloz