| 1 | /* |
| 2 | * Copyright (C) 2011 - David Goulet <dgoulet@efficios.com> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License, version 2 only, |
| 6 | * as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 11 | * more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 16 | */ |
| 17 | |
| 18 | #ifndef _COMPAT_SOCKET_H |
| 19 | #define _COMPAT_SOCKET_H |
| 20 | |
| 21 | #include <sys/socket.h> |
| 22 | #include <sys/un.h> |
| 23 | |
| 24 | #include <common/macros.h> |
| 25 | |
| 26 | #ifdef __linux__ |
| 27 | |
| 28 | #define LTTNG_SOCK_CREDS SCM_CREDENTIALS |
| 29 | |
| 30 | typedef struct ucred lttng_sock_cred; |
| 31 | |
| 32 | #define LTTNG_SOCK_SET_UID_CRED(c, u) LTTNG_REF(c)->uid = u |
| 33 | #define LTTNG_SOCK_SET_GID_CRED(c, g) LTTNG_REF(c)->gid = g |
| 34 | #define LTTNG_SOCK_SET_PID_CRED(c, p) LTTNG_REF(c)->pid = p |
| 35 | |
| 36 | #define LTTNG_SOCK_GET_UID_CRED(c) LTTNG_REF(c)->uid |
| 37 | #define LTTNG_SOCK_GET_GID_CRED(c) LTTNG_REF(c)->gid |
| 38 | #define LTTNG_SOCK_GET_PID_CRED(c) LTTNG_REF(c)->pid |
| 39 | |
| 40 | #elif (defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__)) |
| 41 | |
| 42 | struct lttng_sock_cred { |
| 43 | uid_t uid; |
| 44 | gid_t gid; |
| 45 | }; |
| 46 | |
| 47 | typedef struct lttng_sock_cred lttng_sock_cred; |
| 48 | |
| 49 | #define LTTNG_SOCK_GET_UID_CRED(c) LTTNG_REF(c)->uid |
| 50 | #define LTTNG_SOCK_GET_GID_CRED(c) LTTNG_REF(c)->gid |
| 51 | #define LTTNG_SOCK_GET_PID_CRED(c) -1 |
| 52 | |
| 53 | #else |
| 54 | #error "Please add support for your OS." |
| 55 | #endif /* __linux__ , __FreeBSD__ */ |
| 56 | |
| 57 | |
| 58 | #ifdef __sun__ |
| 59 | |
| 60 | # ifndef CMSG_ALIGN |
| 61 | # ifdef _CMSG_DATA_ALIGN |
| 62 | # define CMSG_ALIGN(len) _CMSG_DATA_ALIGN(len) |
| 63 | # else |
| 64 | /* aligning to sizeof (long) is assumed to be portable (fd.o#40235) */ |
| 65 | # define CMSG_ALIGN(len) (((len) + sizeof (long) - 1) & ~(sizeof (long) - 1)) |
| 66 | # endif |
| 67 | # ifndef CMSG_SPACE |
| 68 | # define CMSG_SPACE(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + CMSG_ALIGN (len)) |
| 69 | # endif |
| 70 | # ifndef CMSG_LEN |
| 71 | # define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len)) |
| 72 | # endif |
| 73 | # endif |
| 74 | |
| 75 | |
| 76 | #include <ucred.h> |
| 77 | static int |
| 78 | getpeereid(int s, uid_t *euid, gid_t *gid) |
| 79 | { |
| 80 | int ret = 0; |
| 81 | ucred_t *ucred = NULL; |
| 82 | |
| 83 | ret = getpeerucred(s, &ucred); |
| 84 | if (ret == -1) { |
| 85 | goto end; |
| 86 | } |
| 87 | |
| 88 | ret = ucred_geteuid(ucred); |
| 89 | if (ret == -1) { |
| 90 | goto free; |
| 91 | } |
| 92 | *euid = ret; |
| 93 | |
| 94 | ret = ucred_getrgid(ucred); |
| 95 | if (ret == -1) { |
| 96 | goto free; |
| 97 | } |
| 98 | *gid = ret; |
| 99 | ret = 0; |
| 100 | free: |
| 101 | ucred_free(ucred); |
| 102 | end: |
| 103 | return ret; |
| 104 | } |
| 105 | |
| 106 | #endif /* __sun__ */ |
| 107 | |
| 108 | #endif /* _COMPAT_SOCKET_H */ |