View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000180 | file | General | public | 2020-08-15 05:30 | 2021-04-27 19:35 |
| Reporter | EuphCat | Assigned To | christos | ||
| Priority | normal | Severity | trivial | Reproducibility | always |
| Status | resolved | Resolution | fixed | ||
| Product Version | 5.39 | ||||
| Fixed in Version | 5.40 | ||||
| Summary | 0000180: A file filled with 0xFF gets reported to be ISO-8859 | ||||
| Description | * I don't know how the parser works, or how file types are managed. I'm okay with NOTABUG A file filled with 0xFF gets reported to be ISO-8859. I find this misleading. | ||||
| Steps To Reproduce | $ dd if=/dev/zero ibs=1k count=1 | tr "\000" "\377" > 0xFFfile.bin 1+0 records in 2+0 records out 1024 bytes (1.0 kB, 1.0 KiB) copied, 0.000256375 s, 4.0 MB/s $ xxd ./0xFFfile.bin | head 00000000: ffff ffff ffff ffff ffff ffff ffff ffff ................ 00000010: ffff ffff ffff ffff ffff ffff ffff ffff ................ 00000020: ffff ffff ffff ffff ffff ffff ffff ffff ................ 00000030: ffff ffff ffff ffff ffff ffff ffff ffff ................ 00000040: ffff ffff ffff ffff ffff ffff ffff ffff ................ 00000050: ffff ffff ffff ffff ffff ffff ffff ffff ................ 00000060: ffff ffff ffff ffff ffff ffff ffff ffff ................ 00000070: ffff ffff ffff ffff ffff ffff ffff ffff ................ 00000080: ffff ffff ffff ffff ffff ffff ffff ffff ................ 00000090: ffff ffff ffff ffff ffff ffff ffff ffff ................ $ file 0xFFfile.bin 0xFFfile.bin: ISO-8859 text, with very long lines, with no line terminators | ||||
| Additional Information | Because of this issue, mkfs.ext4 reports false positive on file validity confirmation. "/dev/sda2 contains `ISO-8859 text, with very long lines, with no line terminators` Proceed anyway? (y,N)" | ||||
| Tags | No tags attached. | ||||
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Fixed by requiring at least 3 distinct character values. |
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Reverted the fix. Breaks other tests. A file can have the same character repeated many times and that should not change how file detects it. Heuristics just add confusion to the behavior. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2020-08-15 05:30 | EuphCat | New Issue | |
| 2020-08-15 12:06 | christos | Assigned To | => christos |
| 2020-08-15 12:06 | christos | Status | new => assigned |
| 2020-08-15 12:06 | christos | Status | assigned => resolved |
| 2020-08-15 12:06 | christos | Resolution | open => fixed |
| 2020-08-15 12:06 | christos | Fixed in Version | => 5.40 |
| 2020-08-15 12:06 | christos | Note Added: 0003447 | |
| 2021-04-27 19:35 | christos | Note Added: 0003602 |
