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| author | Johannes Schindelin <johannes.schindelin@gmx.de> | 2023-03-28 10:17:14 +0200 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2023-03-28 12:18:14 +0200 |
| commit | 27376c60a9b870e7ba456551165897a7408b5886 (patch) | |
| tree | 5b04ff2a43c51419dd0b4928c82a2dd99116d8d9 /winsup/doc | |
| parent | fc6e89c937c1bcdf2b0efc6806e29960c448b756 (diff) | |
| download | newlib-27376c60a9b870e7ba456551165897a7408b5886.zip newlib-27376c60a9b870e7ba456551165897a7408b5886.tar.gz newlib-27376c60a9b870e7ba456551165897a7408b5886.tar.bz2 | |
Allow deriving the current user's home directory via the HOME variable
This patch hails from Git for Windows (where the Cygwin runtime is used
in the form of a slightly modified MSYS2 runtime), where it is a
well-established technique to let the `$HOME` variable define where the
current user's home directory is, falling back to `$HOMEDRIVE$HOMEPATH`
and `$USERPROFILE`.
The idea is that we want to share user-specific settings between
programs, whether they be Cygwin, MSYS2 or not. Unfortunately, we
cannot blindly activate the "db_home: windows" setting because in some
setups, the user's home directory is set to a hidden directory via an
UNC path (\\share\some\hidden\folder$) -- something many programs
cannot handle correctly, e.g. `cmd.exe` and other native Windows
applications that users want to employ as Git helpers.
The established technique is to allow setting the user's home directory
via the environment variables mentioned above: `$HOMEDRIVE$HOMEPATH` or
`$USERPROFILE`. This has the additional advantage that it is much
faster than querying the Windows user database.
Of course this scheme needs to be opt-in. For that reason, it needs
to be activated explicitly via `db_home: env` in `/etc/nsswitch.conf`.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Diffstat (limited to 'winsup/doc')
| -rw-r--r-- | winsup/doc/ntsec.xml | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/winsup/doc/ntsec.xml b/winsup/doc/ntsec.xml index c6871ec..1678ff6 100644 --- a/winsup/doc/ntsec.xml +++ b/winsup/doc/ntsec.xml @@ -1203,6 +1203,17 @@ schemata are the following: See <xref linkend="ntsec-mapping-nsswitch-desc"></xref> for a more detailed description.</listitem> </varlistentry> + <varlistentry> + <term><literal>env</literal></term> + <listitem>Derives the home directory of the current user from the + environment variable <literal>HOME</literal> (falling back to + <literal>HOMEDRIVE\HOMEPATH</literal> and + <literal>USERPROFILE</literal>, in that order). This is faster + than the <term><literal>windows</literal></term> schema at the + expense of determining only the current user's home directory + correctly. This schema is skipped for any other account. + </listitem> + </varlistentry> </variablelist> <para> @@ -1336,6 +1347,17 @@ of each schema when used with <literal>db_home:</literal> for a detailed description.</listitem> </varlistentry> <varlistentry> + <term><literal>env</literal></term> + <listitem>Derives the home directory of the current user from the + environment variable <literal>HOME</literal> (falling back to + <literal>HOMEDRIVE\HOMEPATH</literal> and + <literal>USERPROFILE</literal>, in that order). This is faster + than the <term><literal>windows</literal></term> schema at the + expense of determining only the current user's home directory + correctly. This schema is skipped for any other account. + </listitem> + </varlistentry> + <varlistentry> <term><literal>@ad_attribute</literal></term> <listitem>AD only: The user's home directory is set to the path given in the <literal>ad_attribute</literal> attribute. The path |