1 | /* Copyright (C) 1991,92,95,96,97,98,99,2000,01 Free Software Foundation, Inc.
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2 | This file is part of the GNU C Library.
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3 |
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4 | The GNU C Library is free software; you can redistribute it and/or
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5 | modify it under the terms of the GNU Lesser General Public
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6 | License as published by the Free Software Foundation; either
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7 | version 2.1 of the License, or (at your option) any later version.
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8 |
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9 | The GNU C Library is distributed in the hope that it will be useful,
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10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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12 | Lesser General Public License for more details.
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13 |
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14 | You should have received a copy of the GNU Lesser General Public
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15 | License along with the GNU C Library; if not, write to the Free
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16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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17 | 02111-1307 USA. */
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18 |
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19 | /*
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20 | * POSIX Standard: 9.2.1 Group Database Access <grp.h>
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21 | */
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22 |
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23 |
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24 | #if !defined CONFIG_USE_BB_PWD_GRP
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25 | #include <grp.h>
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26 |
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27 | #else
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28 |
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29 | #ifndef _GRP_H
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30 | #define _GRP_H 1
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31 |
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32 |
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33 | #include <sys/types.h>
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34 | #include <features.h>
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35 | #include <stdio.h>
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36 |
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37 |
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38 | /* The group structure. */
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39 | struct group
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40 | {
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41 | char *gr_name; /* Group name. */
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42 | char *gr_passwd; /* Password. */
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43 | gid_t gr_gid; /* Group ID. */
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44 | char **gr_mem; /* Member list. */
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45 | };
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46 |
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47 |
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48 | /* Rewind the group-file stream. */
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49 | extern void setgrent (void);
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50 |
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51 | /* Close the group-file stream. */
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52 | extern void endgrent (void);
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53 |
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54 | /* Read an entry from the group-file stream, opening it if necessary. */
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55 | extern struct group *getgrent (void);
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56 |
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57 | /* Read a group entry from STREAM. */
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58 | extern struct group *fgetgrent (FILE *__stream);
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59 |
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60 | /* Write the given entry onto the given stream. */
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61 | extern int putgrent (__const struct group *__restrict __p,
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62 | FILE *__restrict __f);
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63 |
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64 | /* Search for an entry with a matching group ID. */
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65 | extern struct group *getgrgid (gid_t __gid);
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66 |
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67 | /* Search for an entry with a matching group name. */
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68 | extern struct group *getgrnam (__const char *__name);
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69 |
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70 | /* Reentrant versions of some of the functions above.
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71 |
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72 | PLEASE NOTE: the `getgrent_r' function is not (yet) standardized.
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73 | The interface may change in later versions of this library. But
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74 | the interface is designed following the principals used for the
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75 | other reentrant functions so the chances are good this is what the
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76 | POSIX people would choose. */
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77 |
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78 | extern int getgrent_r (struct group *__restrict __resultbuf,
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79 | char *__restrict __buffer, size_t __buflen,
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80 | struct group **__restrict __result);
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81 |
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82 | /* Search for an entry with a matching group ID. */
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83 | extern int getgrgid_r (gid_t __gid, struct group *__restrict __resultbuf,
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84 | char *__restrict __buffer, size_t __buflen,
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85 | struct group **__restrict __result);
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86 |
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87 | /* Search for an entry with a matching group name. */
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88 | extern int getgrnam_r (__const char *__restrict __name,
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89 | struct group *__restrict __resultbuf,
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90 | char *__restrict __buffer, size_t __buflen,
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91 | struct group **__restrict __result);
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92 |
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93 | /* Read a group entry from STREAM. This function is not standardized
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94 | an probably never will. */
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95 | extern int fgetgrent_r (FILE *__restrict __stream,
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96 | struct group *__restrict __resultbuf,
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97 | char *__restrict __buffer, size_t __buflen,
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98 | struct group **__restrict __result);
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99 |
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100 | /* Set the group set for the current user to GROUPS (N of them). */
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101 | extern int setgroups (size_t __n, __const gid_t *__groups);
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102 |
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103 | /* Store at most *NGROUPS members of the group set for USER into
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104 | *GROUPS. Also include GROUP. The actual number of groups found is
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105 | returned in *NGROUPS. Return -1 if the if *NGROUPS is too small. */
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106 | extern int getgrouplist (__const char *__user, gid_t __group,
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107 | gid_t *__groups, int *__ngroups);
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108 |
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109 | /* Initialize the group set for the current user
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110 | by reading the group database and using all groups
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111 | of which USER is a member. Also include GROUP. */
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112 | extern int initgroups (__const char *__user, gid_t __group);
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113 |
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114 |
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115 | #endif /* grp.h */
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116 | #endif
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