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| author | Peter Korsgaard <peter@korsgaard.com> | 2016-08-25 23:47:16 +0200 |
|---|---|---|
| committer | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2016-08-26 15:39:42 +0200 |
| commit | 9c67af2c524ad2b6585af2f5e43f76dacd7cc109 (patch) | |
| tree | 644aec09e2077d6ab5d4aa0218217b3ca5df034a /system/skeleton | |
| parent | bacff38e08a3cf7c5ead0e5de59011134e009931 (diff) | |
| download | buildroot-9c67af2c524ad2b6585af2f5e43f76dacd7cc109.tar.gz buildroot-9c67af2c524ad2b6585af2f5e43f76dacd7cc109.zip | |
system/skeleton: use uid/gid 65534 for nobody/nogroup
As recently discussed on lwn.net: https://lwn.net/Articles/695478/
The kernel has special behaviour for uid/gid 65534:
1. The kernel maps UIDs > 65535 to it when some subsystem/API/fs
only supports 16bit UIDs, but a 32bit UID is passed to it.
2. it's used by the kernel's user namespacing as the internal UID
that external UIDs are mapped to that don't have any local mapping.
3. It's used by NFS for all user IDs that cannot be mapped locally if
UID mapping is enabled.
Most distributions already map (or are in the progress of changing)
nobody/nogroup to the 65534 uid/gid, so lets do so as well.
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Diffstat (limited to 'system/skeleton')
| -rw-r--r-- | system/skeleton/etc/group | 2 | ||||
| -rw-r--r-- | system/skeleton/etc/passwd | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/system/skeleton/etc/group b/system/skeleton/etc/group index c813da2022..76346b35f2 100644 --- a/system/skeleton/etc/group +++ b/system/skeleton/etc/group @@ -22,5 +22,5 @@ plugdev:x:46: staff:x:50: lock:x:54: netdev:x:82: -nogroup:x:99: users:x:100: +nogroup:x:65534: diff --git a/system/skeleton/etc/passwd b/system/skeleton/etc/passwd index 883265ad6f..d8281d2585 100644 --- a/system/skeleton/etc/passwd +++ b/system/skeleton/etc/passwd @@ -6,4 +6,4 @@ sync:x:4:100:sync:/bin:/bin/sync mail:x:8:8:mail:/var/spool/mail:/bin/false www-data:x:33:33:www-data:/var/www:/bin/false operator:x:37:37:Operator:/var:/bin/false -nobody:x:99:99:nobody:/home:/bin/false +nobody:x:65534:65534:nobody:/home:/bin/false |
