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    Contents of /trunk/mkinitrd-magellan/busybox/libbb/bb_pwd.c

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    Revision 984 - (show annotations) (download)
    Sun May 30 11:32:42 2010 UTC (13 years, 11 months ago) by niro
    File MIME type: text/plain
    File size: 2199 byte(s) 
    -updated to busybox-1.16.1 and enabled blkid/uuid support in default config
    1 /* vi: set sw=4 ts=4: */
    2 /*
    3 * password utility routines.
    4 *
    5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
    6 * Copyright (C) 2008 by Tito Ragusa <farmatito@tiscali.it>
    7 *
    8 * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
    9 */
    10
    11 #include "libbb.h"
    12
    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)
    16 */
    17
    18 struct passwd* FAST_FUNC xgetpwnam(const char *name)
    19 {
    20 struct passwd *pw = getpwnam(name);
    21 if (!pw)
    22 bb_error_msg_and_die("unknown user %s", name);
    23 return pw;
    24 }
    25
    26 struct group* FAST_FUNC xgetgrnam(const char *name)
    27 {
    28 struct group *gr = getgrnam(name);
    29 if (!gr)
    30 bb_error_msg_and_die("unknown group %s", name);
    31 return gr;
    32 }
    33
    34
    35 struct passwd* FAST_FUNC xgetpwuid(uid_t uid)
    36 {
    37 struct passwd *pw = getpwuid(uid);
    38 if (!pw)
    39 bb_error_msg_and_die("unknown uid %u", (unsigned)uid);
    40 return pw;
    41 }
    42
    43 struct group* FAST_FUNC xgetgrgid(gid_t gid)
    44 {
    45 struct group *gr = getgrgid(gid);
    46 if (!gr)
    47 bb_error_msg_and_die("unknown gid %u", (unsigned)gid);
    48 return gr;
    49 }
    50
    51 char* FAST_FUNC xuid2uname(uid_t uid)
    52 {
    53 struct passwd *pw = xgetpwuid(uid);
    54 return pw->pw_name;
    55 }
    56
    57 char* FAST_FUNC xgid2group(gid_t gid)
    58 {
    59 struct group *gr = xgetgrgid(gid);
    60 return gr->gr_name;
    61 }
    62
    63 char* FAST_FUNC uid2uname(uid_t uid)
    64 {
    65 struct passwd *pw = getpwuid(uid);
    66 return (pw) ? pw->pw_name : NULL;
    67 }
    68
    69 char* FAST_FUNC gid2group(gid_t gid)
    70 {
    71 struct group *gr = getgrgid(gid);
    72 return (gr) ? gr->gr_name : NULL;
    73 }
    74
    75 char* FAST_FUNC uid2uname_utoa(long uid)
    76 {
    77 char *name = uid2uname(uid);
    78 return (name) ? name : utoa(uid);
    79 }
    80
    81 char* FAST_FUNC gid2group_utoa(long gid)
    82 {
    83 char *name = gid2group(gid);
    84 return (name) ? name : utoa(gid);
    85 }
    86
    87 long FAST_FUNC xuname2uid(const char *name)
    88 {
    89 struct passwd *myuser;
    90
    91 myuser = xgetpwnam(name);
    92 return myuser->pw_uid;
    93 }
    94
    95 long FAST_FUNC xgroup2gid(const char *name)
    96 {
    97 struct group *mygroup;
    98
    99 mygroup = xgetgrnam(name);
    100 return mygroup->gr_gid;
    101 }
    102
    103 unsigned long FAST_FUNC get_ug_id(const char *s,
    104 long FAST_FUNC (*xname2id)(const char *))
    105 {
    106 unsigned long r;
    107
    108 r = bb_strtoul(s, NULL, 10);
    109 if (errno)
    110 return xname2id(s);
    111 return r;
    112 }