libsyscall/wrappers/persona.c

   1 /*
   2  * Copyright (c) 2015 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 #include <sys/cdefs.h>
  24 #include <sys/types.h>
  25 #include <stdarg.h>
  26 #include <stdint.h>
  27 #include <sys/persona.h>
  28
  29 #include "strings.h"
  30
  31 /* syscall entry point */
  32 int __persona(uint32_t operation, uint32_t flags, struct kpersona_info *info, uid_t *id, size_t *idlen, char *path);
  33
  34 int
  35 kpersona_alloc(struct kpersona_info *info, uid_t *id)
  36 {
  37         size_t idlen = 1;
  38         return __persona(PERSONA_OP_ALLOC, 0, info, id, &idlen, NULL);
  39 }
  40
  41 int
  42 kpersona_palloc(struct kpersona_info *info, uid_t *id, char path[MAXPATHLEN])
  43 {
  44         size_t idlen = 1;
  45         return __persona(PERSONA_OP_PALLOC, 0, info, id, &idlen, path);
  46 }
  47
  48 int
  49 kpersona_dealloc(uid_t id)
  50 {
  51         size_t idlen = 1;
  52         return __persona(PERSONA_OP_DEALLOC, 0, NULL, &id, &idlen, NULL);
  53 }
  54
  55 int
  56 kpersona_get(uid_t *id)
  57 {
  58         size_t idlen = 1;
  59         return __persona(PERSONA_OP_GET, 0, NULL, id, &idlen, NULL);
  60 }
  61
  62 int
  63 kpersona_getpath(uid_t id, char path[MAXPATHLEN])
  64 {
  65         size_t idlen = 1;
  66         return __persona(PERSONA_OP_GETPATH, 0, NULL, &id, &idlen, path);
  67 }
  68
  69 int
  70 kpersona_info(uid_t id, struct kpersona_info *info)
  71 {
  72         size_t idlen = 1;
  73         return __persona(PERSONA_OP_INFO, 0, info, &id, &idlen, NULL);
  74 }
  75
  76 int
  77 kpersona_pidinfo(pid_t pid, struct kpersona_info *info)
  78 {
  79         size_t idlen = 1;
  80         uid_t id = (uid_t)pid;
  81         return __persona(PERSONA_OP_PIDINFO, 0, info, &id, &idlen, NULL);
  82 }
  83
  84 int
  85 kpersona_find(const char *name, uid_t uid, uid_t *id, size_t *idlen)
  86 {
  87         int ret;
  88         struct kpersona_info kinfo;
  89         kinfo.persona_info_version = PERSONA_INFO_V1;
  90         kinfo.persona_id = uid;
  91         kinfo.persona_type = 0;
  92         kinfo.persona_gid = 0;
  93         kinfo.persona_ngroups = 0;
  94         kinfo.persona_groups[0] = 0;
  95         kinfo.persona_name[0] = 0;
  96         if (name) {
  97                 strlcpy(kinfo.persona_name, name, sizeof(kinfo.persona_name));
  98         }
  99         ret = __persona(PERSONA_OP_FIND, 0, &kinfo, id, idlen, NULL);
 100         if (ret < 0) {
 101                 return ret;
 102         }
 103         return (int)(*idlen);
 104 }
 105
 106 int
 107 kpersona_find_by_type(int persona_type, uid_t *id, size_t *idlen)
 108 {
 109         int ret;
 110         struct kpersona_info kinfo;
 111         kinfo.persona_info_version = PERSONA_INFO_V1;
 112         kinfo.persona_type = persona_type;
 113         kinfo.persona_id = -1;
 114         kinfo.persona_gid = 0;
 115         kinfo.persona_ngroups = 0;
 116         kinfo.persona_groups[0] = 0;
 117         kinfo.persona_name[0] = 0;
 118         ret = __persona(PERSONA_OP_FIND_BY_TYPE, 0, &kinfo, id, idlen, NULL);
 119         if (ret < 0) {
 120                 return ret;
 121         }
 122         return (int)(*idlen);
 123 }