[lttng-tools.git] / src / common / compat / socket.h

/*
 * Copyright (C) 2011 - David Goulet <dgoulet@efficios.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2 only,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef _COMPAT_SOCKET_H
#define _COMPAT_SOCKET_H

#include <sys/socket.h>
#include <sys/un.h>

#include <common/macros.h>

#ifdef __linux__

#define LTTNG_SOCK_CREDS SCM_CREDENTIALS

typedef struct ucred lttng_sock_cred;

#define LTTNG_SOCK_SET_UID_CRED(c, u) LTTNG_REF(c)->uid = u
#define LTTNG_SOCK_SET_GID_CRED(c, g) LTTNG_REF(c)->gid = g
#define LTTNG_SOCK_SET_PID_CRED(c, p) LTTNG_REF(c)->pid = p

#define LTTNG_SOCK_GET_UID_CRED(c) LTTNG_REF(c)->uid
#define LTTNG_SOCK_GET_GID_CRED(c) LTTNG_REF(c)->gid
#define LTTNG_SOCK_GET_PID_CRED(c) LTTNG_REF(c)->pid

#elif (defined(__FreeBSD__) || defined(__CYGWIN__) || defined(__sun__))

struct lttng_sock_cred {
	uid_t uid;
	gid_t gid;
};

typedef struct lttng_sock_cred lttng_sock_cred;

#define LTTNG_SOCK_GET_UID_CRED(c) LTTNG_REF(c)->uid
#define LTTNG_SOCK_GET_GID_CRED(c) LTTNG_REF(c)->gid
#define LTTNG_SOCK_GET_PID_CRED(c) -1

#else
#error "Please add support for your OS."
#endif /* __linux__ , __FreeBSD__ */


#ifdef __sun__

# ifndef CMSG_ALIGN
#  ifdef _CMSG_DATA_ALIGN
#   define CMSG_ALIGN(len) _CMSG_DATA_ALIGN(len)
#  else
    /* aligning to sizeof (long) is assumed to be portable (fd.o#40235) */
#   define CMSG_ALIGN(len) (((len) + sizeof (long) - 1) & ~(sizeof (long) - 1))
#  endif
#  ifndef CMSG_SPACE
#    define CMSG_SPACE(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + CMSG_ALIGN (len))
#  endif
#  ifndef CMSG_LEN
#    define CMSG_LEN(len) (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
#  endif
# endif


#include <ucred.h>
static int
getpeereid(int s, uid_t *euid, gid_t *gid)
{
	int ret = 0;
	ucred_t *ucred = NULL;

	ret = getpeerucred(s, &ucred);
	if (ret == -1) {
		goto end;
	}

	ret = ucred_geteuid(ucred);
	if (ret == -1) {
		goto free;
	}
	*euid = ret;

	ret = ucred_getrgid(ucred);
	if (ret == -1) {
		goto free;
	}
	*gid = ret;
	ret = 0;
free:
	ucred_free(ucred);
end:
	return ret;
}

#endif /* __sun__ */

#endif /* _COMPAT_SOCKET_H */
Commit	Line	Data
	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 */