projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 490019cf A |
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); | |
| 33 | ||
| 34 | int kpersona_alloc(struct kpersona_info *info, uid_t *id) | |
| 35 | { | |
| 36 | size_t idlen = 1; | |
| 37 | return __persona(PERSONA_OP_ALLOC, 0, info, id, &idlen); | |
| 38 | } | |
| 39 | ||
| 40 | int kpersona_dealloc(uid_t id) | |
| 41 | { | |
| 42 | size_t idlen = 1; | |
| 43 | return __persona(PERSONA_OP_DEALLOC, 0, NULL, &id, &idlen); | |
| 44 | } | |
| 45 | ||
| 46 | int kpersona_get(uid_t *id) | |
| 47 | { | |
| 48 | /* persona is a process-static identifier: cache it in a global */ | |
| 49 | static uid_t p_id = PERSONA_ID_NONE; | |
| 50 | if (p_id == PERSONA_ID_NONE) { | |
| 51 | int ret = 0; | |
| 52 | size_t idlen = 1; | |
| 53 | ret = __persona(PERSONA_OP_GET, 0, NULL, &p_id, &idlen); | |
| 54 | if (ret != 0) | |
| 55 | return ret; | |
| 56 | } | |
| 57 | *id = p_id; | |
| 58 | return 0; | |
| 59 | } | |
| 60 | ||
| 61 | int kpersona_info(uid_t id, struct kpersona_info *info) | |
| 62 | { | |
| 63 | size_t idlen = 1; | |
| 64 | return __persona(PERSONA_OP_INFO, 0, info, &id, &idlen); | |
| 65 | } | |
| 66 | ||
| 67 | int kpersona_pidinfo(pid_t pid, struct kpersona_info *info) | |
| 68 | { | |
| 69 | size_t idlen = 1; | |
| 70 | uid_t id = (uid_t)pid; | |
| 71 | return __persona(PERSONA_OP_PIDINFO, 0, info, &id, &idlen); | |
| 72 | } | |
| 73 | ||
| 74 | int kpersona_find(const char *name, uid_t uid, uid_t *id, size_t *idlen) | |
| 75 | { | |
| 76 | int ret; | |
| 77 | struct kpersona_info kinfo; | |
| 78 | kinfo.persona_info_version = PERSONA_INFO_V1; | |
| 79 | kinfo.persona_id = uid; | |
| 80 | kinfo.persona_type = 0; | |
| 81 | kinfo.persona_gid = 0; | |
| 82 | kinfo.persona_ngroups = 0; | |
| 83 | kinfo.persona_groups[0] = 0; | |
| 84 | kinfo.persona_name[0] = 0; | |
| 85 | if (name) | |
| 86 | strlcpy(kinfo.persona_name, name, sizeof(kinfo.persona_name)); | |
| 87 | ret = __persona(PERSONA_OP_FIND, 0, &kinfo, id, idlen); | |
| 88 | if (ret < 0) | |
| 89 | return ret; | |
| 90 | return (int)(*idlen); | |
| 91 | } |