Bug 6020

Summary:	ls -l (long listing format) prints UID and GID instead of names
Product:	Busybox	Reporter:	mytkalyk1990
Component:	Standard Compliance	Assignee:	unassigned
Status:	RESOLVED WORKSFORME
Severity:	major	CC:	busybox-cvs
Priority:	P5
Version:	1.12.x
Target Milestone:	---
Hardware:	Other
OS:	Linux
Host:		Target:
Build:

Description mytkalyk1990 2013-03-02 13:47:02 UTC

On Android, compiled by Stericson busybox 1.21.0 and 1.20.2

$ busybox ls -l 
gives the following output

drwxr-xr-x 3 0 0 0 Feb 28 18:16 acct

Notice the option -n was not specified.

The "$ toolbox ls -l" prints user names and group names properly.

Comment 1 Denys Vlasenko 2013-03-17 22:18:15 UTC

I need your help with debugging it further.

In ls.c, the usernames are printed by this code:

                        column += printf("%-8.8s %-8.8s ",
                                get_cached_username(dn->dn_uid),
                                get_cached_groupname(dn->dn_gid));

get_cached_username(uid), through several layers, calls getpwuid(uid).
Only if that fails (returns NULL) get_cached_username uses numeric uid.

If you have CONFIG_USE_BB_PWD_GRP=y, then it may be the reason, since IIRC android doesn't use standard /etc/passwd file, and BB_PWD_GRP code assumes they are in use. Turn CONFIG_USE_BB_PWD_GRP off.

If you _don_t_ have CONFIG_USE_BB_PWD_GRP=y, then please investigate with small test program why getpwuid(uid) fails. (Say, why getpwuid(0) doesn't return root's pw structure).