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 GPLv2 or later, see file LICENSE in this source tree.
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 struct passwd* FAST_FUNC xgetpwnam(const char *name)
20 struct passwd *pw = getpwnam(name);
22 bb_error_msg_and_die("unknown user %s", name);
26 struct group* FAST_FUNC xgetgrnam(const char *name)
28 struct group *gr = getgrnam(name);
30 bb_error_msg_and_die("unknown group %s", name);
34 struct passwd* FAST_FUNC xgetpwuid(uid_t uid)
36 /* Note: used in nofork applets (whoami), be careful not to leak anything */
37 struct passwd *pw = getpwuid(uid);
39 bb_error_msg_and_die("unknown uid %u", (unsigned)uid);
43 struct group* FAST_FUNC xgetgrgid(gid_t gid)
45 struct group *gr = getgrgid(gid);
47 bb_error_msg_and_die("unknown gid %u", (unsigned)gid);
51 char* FAST_FUNC xuid2uname(uid_t uid)
53 /* Note: used in nofork applets (whoami), be careful not to leak anything */
54 struct passwd *pw = xgetpwuid(uid);
58 char* FAST_FUNC xgid2group(gid_t gid)
60 struct group *gr = xgetgrgid(gid);
64 char* FAST_FUNC uid2uname(uid_t uid)
66 struct passwd *pw = getpwuid(uid);
67 return (pw) ? pw->pw_name : NULL;
70 char* FAST_FUNC gid2group(gid_t gid)
72 struct group *gr = getgrgid(gid);
73 return (gr) ? gr->gr_name : NULL;
76 char* FAST_FUNC uid2uname_utoa(uid_t uid)
78 char *name = uid2uname(uid);
79 return (name) ? name : utoa(uid);
82 char* FAST_FUNC gid2group_utoa(gid_t gid)
84 char *name = gid2group(gid);
85 return (name) ? name : utoa(gid);
88 long FAST_FUNC xuname2uid(const char *name)
90 struct passwd *myuser;
92 myuser = xgetpwnam(name);
93 return myuser->pw_uid;
96 long FAST_FUNC xgroup2gid(const char *name)
98 struct group *mygroup;
100 mygroup = xgetgrnam(name);
101 return mygroup->gr_gid;
104 unsigned long FAST_FUNC get_ug_id(const char *s,
105 long FAST_FUNC (*xname2id)(const char *))
109 r = bb_strtoul(s, NULL, 10);