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Diffstat (limited to 'results/classifier/gemma3:12b/permissions/1299')
| -rw-r--r-- | results/classifier/gemma3:12b/permissions/1299 | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/results/classifier/gemma3:12b/permissions/1299 b/results/classifier/gemma3:12b/permissions/1299 new file mode 100644 index 000000000..565146549 --- /dev/null +++ b/results/classifier/gemma3:12b/permissions/1299 @@ -0,0 +1,25 @@ + +User networking with an SMB Share while not running as root +Description of problem: +When attempting to write a file to the qemu share, Samba always responds with NT_STATUS_ACCESS_DENIED. + +This only happens on the MacOS version of Samba, on Linux it appears to work without issues for now. +Steps to reproduce: +1. Start a VM with a SMB share attached to it +2. Create a test file to upload `touch test-file.txt` +3. Upload the test file `smbclient //10.0.2.4/qemu -c 'put test-file.txt' +Additional information: +QEMU has been using Samba for it's SMB shares for quite some time now. +But in the 4.17.x release a bug has appeared in the MacOS Build of Samba. + +I've filed a bug with Samba, and suggested a fix for it. +https://bugzilla.samba.org/show_bug.cgi?id=15215 + +The origin of the bug lies in the fact that when running SMBD as a non-root user, a function sets `errno` unexpectedly. +But after discussing this with Samba, they concluded that running smbd as an un-privileged user is not a supported use case. + +Whilst this is not a QEMU bug per se, it is caused by the fact that QEMU is running smbd in an unsupported manner. + +As a side note, on Linux this bug does not appear to exist as of yet. +The Linux version of `unbecome_root` doesn't seem to set `errno`. (tested on a recent ArchLinux install). +But I think this depends on the LibC implementation of setuid/seteuid/setreuid/etc. so I can't say it won't happen in the future, or with a different LibC implementation. |