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docs: reference NAME_MAX where we talk about filenames

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Lennart Poettering 2021-03-08 22:43:41 +01:00
parent b775b1828d
commit 932401fd61
1 changed files with 2 additions and 2 deletions
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docs/USER_NAMES.md
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@ -87,8 +87,8 @@ hyphen. A size limit is enforced: the minimum of `sysconf(_SC_LOGIN_NAME_MAX)`
(typically 256 on Linux; rationale: this is how POSIX suggests to detect the
limit), `UT_NAMESIZE-1` (typically 31 on Linux; rationale: names longer than
this cannot correctly appear in `utmp`/`wtmp` and create ambiguity with login
accounting) and `FILENAME_MAX` (4096 on Linux; rationale: user names typically
appear in directory names, i.e. the home directory), thus MIN(256, 31, 4096) =
accounting) and `NAME_MAX` (255 on Linux; rationale: user names typically
appear in directory names, i.e. the home directory), thus MIN(256, 31, 255) =
31.
Note that these rules are both more strict and more relaxed than all of the