1 /* vi: set sw=4 ts=4: */
3 * password utility routines.
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6 * Copyright (C) 2008 by Tito Ragusa <farmatito@tiscali.it>
8 * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
13 /* TODO: maybe change API to return malloced data?
14 * This will allow to stop using libc functions returning
15 * pointers to static data (getpwuid)
18 /* TODO: add xgetpwnam, this construct is used a lot */
20 struct passwd* FAST_FUNC xgetpwuid(uid_t uid)
22 struct passwd *pw = getpwuid(uid);
24 bb_error_msg_and_die("unknown uid %u", (unsigned)uid);
28 struct group* FAST_FUNC xgetgrgid(gid_t gid)
30 struct group *gr = getgrgid(gid);
32 bb_error_msg_and_die("unknown gid %u", (unsigned)gid);
36 char* FAST_FUNC xuid2uname(uid_t uid)
38 struct passwd *pw = xgetpwuid(uid);
42 char* FAST_FUNC xgid2group(gid_t gid)
44 struct group *gr = xgetgrgid(gid);
48 char* FAST_FUNC uid2uname(uid_t uid)
50 struct passwd *pw = getpwuid(uid);
51 return (pw) ? pw->pw_name : NULL;
54 char* FAST_FUNC gid2group(gid_t gid)
56 struct group *gr = getgrgid(gid);
57 return (gr) ? gr->gr_name : NULL;
60 char* FAST_FUNC uid2uname_utoa(long uid)
62 char *name = uid2uname(uid);
63 return (name) ? name : utoa(uid);
66 char* FAST_FUNC gid2group_utoa(long gid)
68 char *name = gid2group(gid);
69 return (name) ? name : utoa(gid);
72 long FAST_FUNC xuname2uid(const char *name)
74 struct passwd *myuser;
76 myuser = getpwnam(name);
78 bb_error_msg_and_die("unknown user %s", name);
80 return myuser->pw_uid;
83 long FAST_FUNC xgroup2gid(const char *name)
85 struct group *mygroup;
87 mygroup = getgrnam(name);
89 bb_error_msg_and_die("unknown group %s", name);
91 return mygroup->gr_gid;
94 unsigned long FAST_FUNC get_ug_id(const char *s,
95 long FAST_FUNC (*xname2id)(const char *))
99 r = bb_strtoul(s, NULL, 10);