[lttng-tools.git] / src / common / runas.c

/*
 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
 *                      Mathieu Desnoyers <mathieu.desnoyers@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.
 */

#define _GNU_SOURCE
#define _LGPL_SOURCE
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <sched.h>
#include <sys/signal.h>

#include <common/common.h>
#include <common/utils.h>
#include <common/compat/mman.h>
#include <common/compat/clone.h>
#include <common/compat/getenv.h>

#include "runas.h"

#define RUNAS_CHILD_STACK_SIZE	10485760

#ifndef MAP_STACK
#define MAP_STACK		0
#endif

#ifdef __FreeBSD__
/* FreeBSD MAP_STACK always return -ENOMEM */
#define LTTNG_MAP_STACK		0
#else
#define LTTNG_MAP_STACK		MAP_STACK
#endif

#ifndef MAP_GROWSDOWN
#define MAP_GROWSDOWN		0
#endif

#ifndef MAP_ANONYMOUS
#define MAP_ANONYMOUS		MAP_ANON
#endif

struct run_as_data {
	int (*cmd)(void *data);
	void *data;
	uid_t uid;
	gid_t gid;
	int retval_pipe;
};

struct run_as_mkdir_data {
	const char *path;
	mode_t mode;
};

struct run_as_open_data {
	const char *path;
	int flags;
	mode_t mode;
};

struct run_as_unlink_data {
	const char *path;
};

struct run_as_recursive_rmdir_data {
	const char *path;
};

struct run_as_ret {
	int ret;
	int _errno;
};

#ifdef VALGRIND
static
int use_clone(void)
{
	return 0;
}
#else
static
int use_clone(void)
{
	return !lttng_secure_getenv("LTTNG_DEBUG_NOCLONE");
}
#endif

LTTNG_HIDDEN
int _utils_mkdir_recursive_unsafe(const char *path, mode_t mode);

/*
 * Create recursively directory using the FULL path.
 */
static
int _mkdir_recursive(void *_data)
{
	struct run_as_mkdir_data *data = _data;
	const char *path;
	mode_t mode;

	path = data->path;
	mode = data->mode;

	/* Safe to call as we have transitioned to the requested uid/gid. */
	return _utils_mkdir_recursive_unsafe(path, mode);
}

static
int _mkdir(void *_data)
{
	struct run_as_mkdir_data *data = _data;

	return mkdir(data->path, data->mode);
}

static
int _open(void *_data)
{
	struct run_as_open_data *data = _data;

	return open(data->path, data->flags, data->mode);
}

static
int _unlink(void *_data)
{
	struct run_as_unlink_data *data = _data;

	return unlink(data->path);
}

static
int _recursive_rmdir(void *_data)
{
	struct run_as_recursive_rmdir_data *data = _data;

	return utils_recursive_rmdir(data->path);
}

static
int child_run_as(void *_data)
{
	int ret;
	struct run_as_data *data = _data;
	ssize_t writelen;
	struct run_as_ret sendret;

	/*
	 * Child: it is safe to drop egid and euid while sharing the
	 * file descriptors with the parent process, since we do not
	 * drop "uid": therefore, the user we are dropping egid/euid to
	 * cannot attach to this process with, e.g. ptrace, nor map this
	 * process memory.
	 */
	if (data->gid != getegid()) {
		ret = setegid(data->gid);
		if (ret < 0) {
			PERROR("setegid");
			goto write_return;
		}
	}
	if (data->uid != geteuid()) {
		ret = seteuid(data->uid);
		if (ret < 0) {
			PERROR("seteuid");
			goto write_return;
		}
	}
	/*
	 * Also set umask to 0 for mkdir executable bit.
	 */
	umask(0);
	ret = (*data->cmd)(data->data);

write_return:
	sendret.ret = ret;
	sendret._errno = errno;
	/* send back return value */
	writelen = lttng_write(data->retval_pipe, &sendret, sizeof(sendret));
	if (writelen < sizeof(sendret)) {
		PERROR("lttng_write error");
		return EXIT_FAILURE;
	} else {
		return EXIT_SUCCESS;
	}
}

static
int run_as_clone(int (*cmd)(void *data), void *data, uid_t uid, gid_t gid)
{
	struct run_as_data run_as_data;
	int ret = 0;
	ssize_t readlen;
	int status;
	pid_t pid;
	int retval_pipe[2];
	void *child_stack;
	struct run_as_ret recvret;

	/*
	 * If we are non-root, we can only deal with our own uid.
	 */
	if (geteuid() != 0) {
		if (uid != geteuid()) {
			recvret.ret = -1;
			recvret._errno = EPERM;
			ERR("Client (%d)/Server (%d) UID mismatch (and sessiond is not root)",
				uid, geteuid());
			goto end;
		}
	}

	ret = pipe(retval_pipe);
	if (ret < 0) {
		recvret.ret = -1;
		recvret._errno = errno;
		PERROR("pipe");
		goto end;
	}
	run_as_data.data = data;
	run_as_data.cmd = cmd;
	run_as_data.uid = uid;
	run_as_data.gid = gid;
	run_as_data.retval_pipe = retval_pipe[1];	/* write end */
	child_stack = mmap(NULL, RUNAS_CHILD_STACK_SIZE,
		PROT_WRITE | PROT_READ,
		MAP_PRIVATE | MAP_GROWSDOWN | MAP_ANONYMOUS | LTTNG_MAP_STACK,
		-1, 0);
	if (child_stack == MAP_FAILED) {
		recvret.ret = -1;
		recvret._errno = ENOMEM;
		PERROR("mmap");
		goto close_pipe;
	}
	/*
	 * Pointing to the middle of the stack to support architectures
	 * where the stack grows up (HPPA).
	 */
	pid = lttng_clone_files(child_run_as, child_stack + (RUNAS_CHILD_STACK_SIZE / 2),
		&run_as_data);
	if (pid < 0) {
		recvret.ret = -1;
		recvret._errno = errno;
		PERROR("clone");
		goto unmap_stack;
	}
	/* receive return value */
	readlen = lttng_read(retval_pipe[0], &recvret, sizeof(recvret));
	if (readlen < sizeof(recvret)) {
		recvret.ret = -1;
		recvret._errno = errno;
	}

	/*
	 * Parent: wait for child to return, in which case the
	 * shared memory map will have been created.
	 */
	pid = waitpid(pid, &status, 0);
	if (pid < 0 || !WIFEXITED(status) || WEXITSTATUS(status) != 0) {
		recvret.ret = -1;
		recvret._errno = errno;
		PERROR("wait");
	}
unmap_stack:
	ret = munmap(child_stack, RUNAS_CHILD_STACK_SIZE);
	if (ret < 0) {
		recvret.ret = -1;
		recvret._errno = errno;
		PERROR("munmap");
	}
close_pipe:
	ret = close(retval_pipe[0]);
	if (ret) {
		recvret.ret = -1;
		recvret._errno = errno;
		PERROR("close");
	}
	ret = close(retval_pipe[1]);
	if (ret) {
		recvret.ret = -1;
		recvret._errno = errno;
		PERROR("close");
	}
end:
	errno = recvret._errno;
	return recvret.ret;
}

/*
 * To be used on setups where gdb has issues debugging programs using
 * clone/rfork. Note that this is for debuging ONLY, and should not be
 * considered secure.
 */
static
int run_as_noclone(int (*cmd)(void *data), void *data, uid_t uid, gid_t gid)
{
	int ret, saved_errno;
	mode_t old_mask;

	old_mask = umask(0);
	ret = cmd(data);
	saved_errno = errno;
	umask(old_mask);
	errno = saved_errno;

	return ret;
}

static
int run_as(int (*cmd)(void *data), void *data, uid_t uid, gid_t gid)
{
	if (use_clone()) {
		int ret;

		DBG("Using run_as_clone");
		pthread_mutex_lock(&lttng_libc_state_lock);
		ret = run_as_clone(cmd, data, uid, gid);
		pthread_mutex_unlock(&lttng_libc_state_lock);
		return ret;
	} else {
		DBG("Using run_as_noclone");
		return run_as_noclone(cmd, data, uid, gid);
	}
}

LTTNG_HIDDEN
int run_as_mkdir_recursive(const char *path, mode_t mode, uid_t uid, gid_t gid)
{
	struct run_as_mkdir_data data;

	DBG3("mkdir() recursive %s with mode %d for uid %d and gid %d",
			path, mode, uid, gid);
	data.path = path;
	data.mode = mode;
	return run_as(_mkdir_recursive, &data, uid, gid);
}

LTTNG_HIDDEN
int run_as_mkdir(const char *path, mode_t mode, uid_t uid, gid_t gid)
{
	struct run_as_mkdir_data data;

	DBG3("mkdir() %s with mode %d for uid %d and gid %d",
			path, mode, uid, gid);
	data.path = path;
	data.mode = mode;
	return run_as(_mkdir, &data, uid, gid);
}

/*
 * Note: open_run_as is currently not working. We'd need to pass the fd
 * opened in the child to the parent.
 */
LTTNG_HIDDEN
int run_as_open(const char *path, int flags, mode_t mode, uid_t uid, gid_t gid)
{
	struct run_as_open_data data;

	DBG3("open() %s with flags %X mode %d for uid %d and gid %d",
			path, flags, mode, uid, gid);
	data.path = path;
	data.flags = flags;
	data.mode = mode;
	return run_as(_open, &data, uid, gid);
}

LTTNG_HIDDEN
int run_as_unlink(const char *path, uid_t uid, gid_t gid)
{
	struct run_as_unlink_data data;

	DBG3("unlink() %s with for uid %d and gid %d",
			path, uid, gid);
	data.path = path;
	return run_as(_unlink, &data, uid, gid);
}

LTTNG_HIDDEN
int run_as_recursive_rmdir(const char *path, uid_t uid, gid_t gid)
{
	struct run_as_recursive_rmdir_data data;

	DBG3("recursive_rmdir() %s with for uid %d and gid %d",
			path, uid, gid);
	data.path = path;
	return run_as(_recursive_rmdir, &data, uid, gid);
}
Commit	Line	Data
60b6c79c MD	1	/*
	2	* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
	3	* Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	4	*
d14d33bf AM	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License, version 2 only,
	7	* as published by the Free Software Foundation.
60b6c79c MD	8	*
	9	* This program is distributed in the hope that it will be useful, but WITHOUT
	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
d14d33bf	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
60b6c79c MD	12	* more details.
60b6c79c MD	13	*
d14d33bf AM	14	* You should have received a copy of the GNU General Public License along
	15	* with this program; if not, write to the Free Software Foundation, Inc.,
	16	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
60b6c79c MD	17	*/
	18
	19	#define _GNU_SOURCE
6c1c0768	20	#define _LGPL_SOURCE
60b6c79c MD	21	#include <errno.h>
	22	#include <limits.h>
	23	#include <stdio.h>
	24	#include <stdlib.h>
	25	#include <string.h>
	26	#include <sys/wait.h>
	27	#include <sys/types.h>
	28	#include <sys/stat.h>
	29	#include <unistd.h>
	30	#include <fcntl.h>
c2b75c49	31	#include <sched.h>
730389d9	32	#include <sys/signal.h>
60b6c79c	33
90e535ef	34	#include <common/common.h>
3fd15a74	35	#include <common/utils.h>
730389d9 DG	36	#include <common/compat/mman.h>
730389d9 DG	37	#include <common/compat/clone.h>
e8fa9fb0	38	#include <common/compat/getenv.h>
60b6c79c	39
0857097f DG	40	#include "runas.h"
0857097f DG	41
e11d277b	42	#define RUNAS_CHILD_STACK_SIZE 10485760
c2b75c49	43
1e4035fc AS	44	#ifndef MAP_STACK
	45	#define MAP_STACK 0
	46	#endif
	47
0756d557 MD	48	#ifdef __FreeBSD__
	49	/* FreeBSD MAP_STACK always return -ENOMEM */
	50	#define LTTNG_MAP_STACK 0
	51	#else
	52	#define LTTNG_MAP_STACK MAP_STACK
059e1d3d MD	53	#endif
059e1d3d MD	54
a5ae566a	55	#ifndef MAP_GROWSDOWN
edb025e8	56	#define MAP_GROWSDOWN 0
a5ae566a MD	57	#endif
	58
	59	#ifndef MAP_ANONYMOUS
	60	#define MAP_ANONYMOUS MAP_ANON
	61	#endif
	62
c2b75c49 MD	63	struct run_as_data {
	64	int (cmd)(void data);
	65	void *data;
	66	uid_t uid;
	67	gid_t gid;
	68	int retval_pipe;
	69	};
	70
e11d277b	71	struct run_as_mkdir_data {
60b6c79c MD	72	const char *path;
	73	mode_t mode;
	74	};
	75
e11d277b	76	struct run_as_open_data {
60b6c79c MD	77	const char *path;
	78	int flags;
	79	mode_t mode;
	80	};
	81
4628484a MD	82	struct run_as_unlink_data {
	83	const char *path;
	84	};
	85
	86	struct run_as_recursive_rmdir_data {
	87	const char *path;
	88	};
	89
df5b86c8 MD	90	struct run_as_ret {
	91	int ret;
	92	int _errno;
	93	};
	94
8f0044bf MD	95	#ifdef VALGRIND
	96	static
	97	int use_clone(void)
	98	{
	99	return 0;
	100	}
	101	#else
	102	static
	103	int use_clone(void)
	104	{
e8fa9fb0	105	return !lttng_secure_getenv("LTTNG_DEBUG_NOCLONE");
8f0044bf MD	106	}
	107	#endif
	108
d77dded2 JG	109	LTTNG_HIDDEN
	110	int _utils_mkdir_recursive_unsafe(const char *path, mode_t mode);
	111
60b6c79c MD	112	/*
	113	* Create recursively directory using the FULL path.
	114	*/
	115	static
	116	int _mkdir_recursive(void *_data)
	117	{
e11d277b	118	struct run_as_mkdir_data *data = _data;
60b6c79c	119	const char *path;
60b6c79c	120	mode_t mode;
60b6c79c MD	121
	122	path = data->path;
	123	mode = data->mode;
	124
d77dded2 JG	125	/* Safe to call as we have transitioned to the requested uid/gid. */
d77dded2 JG	126	return _utils_mkdir_recursive_unsafe(path, mode);
60b6c79c MD	127	}
	128
	129	static
	130	int _mkdir(void *_data)
	131	{
e11d277b	132	struct run_as_mkdir_data *data = _data;
7ce36756	133
df5b86c8	134	return mkdir(data->path, data->mode);
60b6c79c MD	135	}
	136
	137	static
	138	int _open(void *_data)
	139	{
e11d277b	140	struct run_as_open_data *data = _data;
df5b86c8	141
60b6c79c MD	142	return open(data->path, data->flags, data->mode);
	143	}
	144
4628484a MD	145	static
	146	int _unlink(void *_data)
	147	{
4628484a MD	148	struct run_as_unlink_data *data = _data;
4628484a MD	149
df5b86c8	150	return unlink(data->path);
4628484a MD	151	}
	152
	153	static
	154	int _recursive_rmdir(void *_data)
	155	{
4628484a MD	156	struct run_as_recursive_rmdir_data *data = _data;
4628484a MD	157
df5b86c8	158	return utils_recursive_rmdir(data->path);
4628484a MD	159	}
4628484a MD	160
c2b75c49 MD	161	static
	162	int child_run_as(void *_data)
	163	{
6775595e	164	int ret;
c2b75c49	165	struct run_as_data *data = _data;
6775595e	166	ssize_t writelen;
df5b86c8	167	struct run_as_ret sendret;
c2b75c49 MD	168
	169	/*
	170	* Child: it is safe to drop egid and euid while sharing the
	171	* file descriptors with the parent process, since we do not
	172	* drop "uid": therefore, the user we are dropping egid/euid to
	173	* cannot attach to this process with, e.g. ptrace, nor map this
	174	* process memory.
	175	*/
1576d582 MD	176	if (data->gid != getegid()) {
	177	ret = setegid(data->gid);
	178	if (ret < 0) {
4c462e79	179	PERROR("setegid");
6d73c4ef	180	goto write_return;
1576d582	181	}
c2b75c49	182	}
1576d582 MD	183	if (data->uid != geteuid()) {
	184	ret = seteuid(data->uid);
	185	if (ret < 0) {
4c462e79	186	PERROR("seteuid");
6d73c4ef	187	goto write_return;
1576d582	188	}
c2b75c49 MD	189	}
	190	/*
	191	* Also set umask to 0 for mkdir executable bit.
	192	*/
	193	umask(0);
df5b86c8	194	ret = (*data->cmd)(data->data);
6d73c4ef MD	195
6d73c4ef MD	196	write_return:
df5b86c8 MD	197	sendret.ret = ret;
df5b86c8 MD	198	sendret._errno = errno;
c2b75c49	199	/* send back return value */
6cd525e8 MD	200	writelen = lttng_write(data->retval_pipe, &sendret, sizeof(sendret));
	201	if (writelen < sizeof(sendret)) {
	202	PERROR("lttng_write error");
	203	return EXIT_FAILURE;
	204	} else {
	205	return EXIT_SUCCESS;
	206	}
c2b75c49 MD	207	}
c2b75c49 MD	208
60b6c79c	209	static
2d85a600	210	int run_as_clone(int (cmd)(void data), void *data, uid_t uid, gid_t gid)
60b6c79c	211	{
c2b75c49	212	struct run_as_data run_as_data;
60b6c79c	213	int ret = 0;
6cd525e8	214	ssize_t readlen;
c2b75c49	215	int status;
60b6c79c	216	pid_t pid;
c2b75c49	217	int retval_pipe[2];
d5bd7573	218	void *child_stack;
df5b86c8	219	struct run_as_ret recvret;
60b6c79c MD	220
	221	/*
	222	* If we are non-root, we can only deal with our own uid.
	223	*/
	224	if (geteuid() != 0) {
	225	if (uid != geteuid()) {
df5b86c8 MD	226	recvret.ret = -1;
df5b86c8 MD	227	recvret._errno = EPERM;
60b6c79c MD	228	ERR("Client (%d)/Server (%d) UID mismatch (and sessiond is not root)",
60b6c79c MD	229	uid, geteuid());
df5b86c8	230	goto end;
60b6c79c	231	}
60b6c79c MD	232	}
60b6c79c MD	233
c2b75c49 MD	234	ret = pipe(retval_pipe);
c2b75c49 MD	235	if (ret < 0) {
df5b86c8 MD	236	recvret.ret = -1;
df5b86c8 MD	237	recvret._errno = errno;
4c462e79	238	PERROR("pipe");
60b6c79c	239	goto end;
c2b75c49 MD	240	}
	241	run_as_data.data = data;
	242	run_as_data.cmd = cmd;
	243	run_as_data.uid = uid;
	244	run_as_data.gid = gid;
	245	run_as_data.retval_pipe = retval_pipe[1]; /* write end */
e11d277b	246	child_stack = mmap(NULL, RUNAS_CHILD_STACK_SIZE,
d5bd7573	247	PROT_WRITE \| PROT_READ,
0756d557	248	MAP_PRIVATE \| MAP_GROWSDOWN \| MAP_ANONYMOUS \| LTTNG_MAP_STACK,
d5bd7573 MD	249	-1, 0);
d5bd7573 MD	250	if (child_stack == MAP_FAILED) {
df5b86c8 MD	251	recvret.ret = -1;
df5b86c8 MD	252	recvret._errno = ENOMEM;
4c462e79	253	PERROR("mmap");
d5bd7573 MD	254	goto close_pipe;
	255	}
	256	/*
	257	* Pointing to the middle of the stack to support architectures
	258	* where the stack grows up (HPPA).
	259	*/
89831a74 MD	260	pid = lttng_clone_files(child_run_as, child_stack + (RUNAS_CHILD_STACK_SIZE / 2),
89831a74 MD	261	&run_as_data);
c2b75c49	262	if (pid < 0) {
df5b86c8 MD	263	recvret.ret = -1;
df5b86c8 MD	264	recvret._errno = errno;
4c462e79	265	PERROR("clone");
d5bd7573	266	goto unmap_stack;
c2b75c49 MD	267	}
c2b75c49 MD	268	/* receive return value */
df5b86c8 MD	269	readlen = lttng_read(retval_pipe[0], &recvret, sizeof(recvret));
	270	if (readlen < sizeof(recvret)) {
	271	recvret.ret = -1;
	272	recvret._errno = errno;
6cd525e8	273	}
c2b75c49 MD	274
	275	/*
	276	* Parent: wait for child to return, in which case the
	277	* shared memory map will have been created.
	278	*/
47fb7563	279	pid = waitpid(pid, &status, 0);
c2b75c49	280	if (pid < 0 \|\| !WIFEXITED(status) \|\| WEXITSTATUS(status) != 0) {
df5b86c8 MD	281	recvret.ret = -1;
df5b86c8 MD	282	recvret._errno = errno;
4c462e79	283	PERROR("wait");
60b6c79c	284	}
d5bd7573	285	unmap_stack:
e11d277b	286	ret = munmap(child_stack, RUNAS_CHILD_STACK_SIZE);
d5bd7573	287	if (ret < 0) {
df5b86c8 MD	288	recvret.ret = -1;
df5b86c8 MD	289	recvret._errno = errno;
4c462e79	290	PERROR("munmap");
d5bd7573	291	}
c2b75c49	292	close_pipe:
4c462e79 MD	293	ret = close(retval_pipe[0]);
4c462e79 MD	294	if (ret) {
df5b86c8 MD	295	recvret.ret = -1;
df5b86c8 MD	296	recvret._errno = errno;
4c462e79 MD	297	PERROR("close");
	298	}
	299	ret = close(retval_pipe[1]);
	300	if (ret) {
df5b86c8 MD	301	recvret.ret = -1;
df5b86c8 MD	302	recvret._errno = errno;
4c462e79 MD	303	PERROR("close");
4c462e79 MD	304	}
60b6c79c	305	end:
df5b86c8 MD	306	errno = recvret._errno;
df5b86c8 MD	307	return recvret.ret;
60b6c79c MD	308	}
60b6c79c MD	309
2d85a600 MD	310	/*
	311	* To be used on setups where gdb has issues debugging programs using
	312	* clone/rfork. Note that this is for debuging ONLY, and should not be
	313	* considered secure.
	314	*/
	315	static
	316	int run_as_noclone(int (cmd)(void data), void *data, uid_t uid, gid_t gid)
	317	{
df5b86c8	318	int ret, saved_errno;
5b73926f DG	319	mode_t old_mask;
	320
	321	old_mask = umask(0);
	322	ret = cmd(data);
df5b86c8	323	saved_errno = errno;
5b73926f	324	umask(old_mask);
df5b86c8	325	errno = saved_errno;
5b73926f DG	326
5b73926f DG	327	return ret;
2d85a600 MD	328	}
	329
	330	static
	331	int run_as(int (cmd)(void data), void *data, uid_t uid, gid_t gid)
	332	{
8f0044bf	333	if (use_clone()) {
9ef70f87 MD	334	int ret;
9ef70f87 MD	335
2d85a600	336	DBG("Using run_as_clone");
9ef70f87 MD	337	pthread_mutex_lock(&lttng_libc_state_lock);
	338	ret = run_as_clone(cmd, data, uid, gid);
	339	pthread_mutex_unlock(&lttng_libc_state_lock);
	340	return ret;
2d85a600 MD	341	} else {
	342	DBG("Using run_as_noclone");
	343	return run_as_noclone(cmd, data, uid, gid);
	344	}
	345	}
	346
90e535ef	347	LTTNG_HIDDEN
e11d277b	348	int run_as_mkdir_recursive(const char *path, mode_t mode, uid_t uid, gid_t gid)
60b6c79c	349	{
e11d277b	350	struct run_as_mkdir_data data;
60b6c79c MD	351
	352	DBG3("mkdir() recursive %s with mode %d for uid %d and gid %d",
	353	path, mode, uid, gid);
	354	data.path = path;
	355	data.mode = mode;
	356	return run_as(_mkdir_recursive, &data, uid, gid);
	357	}
	358
90e535ef	359	LTTNG_HIDDEN
e11d277b	360	int run_as_mkdir(const char *path, mode_t mode, uid_t uid, gid_t gid)
60b6c79c	361	{
e11d277b	362	struct run_as_mkdir_data data;
60b6c79c MD	363
	364	DBG3("mkdir() %s with mode %d for uid %d and gid %d",
	365	path, mode, uid, gid);
	366	data.path = path;
	367	data.mode = mode;
	368	return run_as(_mkdir, &data, uid, gid);
	369	}
	370
	371	/*
	372	* Note: open_run_as is currently not working. We'd need to pass the fd
	373	* opened in the child to the parent.
	374	*/
90e535ef	375	LTTNG_HIDDEN
e11d277b	376	int run_as_open(const char *path, int flags, mode_t mode, uid_t uid, gid_t gid)
60b6c79c	377	{
e11d277b	378	struct run_as_open_data data;
c2b75c49	379
47fb7563 MD	380	DBG3("open() %s with flags %X mode %d for uid %d and gid %d",
47fb7563 MD	381	path, flags, mode, uid, gid);
60b6c79c MD	382	data.path = path;
	383	data.flags = flags;
	384	data.mode = mode;
	385	return run_as(_open, &data, uid, gid);
60b6c79c	386	}
4628484a MD	387
	388	LTTNG_HIDDEN
	389	int run_as_unlink(const char *path, uid_t uid, gid_t gid)
	390	{
	391	struct run_as_unlink_data data;
	392
	393	DBG3("unlink() %s with for uid %d and gid %d",
	394	path, uid, gid);
	395	data.path = path;
	396	return run_as(_unlink, &data, uid, gid);
	397	}
	398
	399	LTTNG_HIDDEN
	400	int run_as_recursive_rmdir(const char *path, uid_t uid, gid_t gid)
	401	{
	402	struct run_as_recursive_rmdir_data data;
	403
	404	DBG3("recursive_rmdir() %s with for uid %d and gid %d",
	405	path, uid, gid);
	406	data.path = path;
	407	return run_as(_recursive_rmdir, &data, uid, gid);
	408	}