[dragonfly.git] / sys / emulation / dragonfly12 / dfbsd12_stat.c

/*-
 * Copyright (c) 2005 The DragonFly Project.  All rights reserved.
 * 
 * This code is derived from software contributed to The DragonFly Project
 * by Joerg Sonnenberger <joerg@bec.de>.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of The DragonFly Project nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific, prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $DragonFly: src/sys/emulation/dragonfly12/dfbsd12_stat.c,v 1.4 2008/09/17 21:44:16 dillon Exp $
 */

#include "opt_compatdf12.h"

#include <sys/param.h>
#include <sys/kern_syscall.h>
#include <sys/mount.h>
#include <sys/nlookup.h>
#include <sys/proc.h>
#include <sys/priv.h>
#include <sys/stat.h>
#include <sys/sysproto.h>
#include <sys/systm.h>
#include <sys/thread.h>
#include <sys/vnode.h>
#include <emulation/dragonfly12/stat.h>

static void
cvtstat(struct dfbsd12_stat *oldstat, struct stat *newstat)
{
	bzero(oldstat, sizeof(oldstat));

	oldstat->st_dev = newstat->st_dev;
	oldstat->st_ino = newstat->st_ino;	/* truncation */
	oldstat->st_mode = newstat->st_mode;
	oldstat->st_nlink = newstat->st_nlink;	/* truncation */
	oldstat->st_uid = newstat->st_uid;
	oldstat->st_gid = newstat->st_gid;
	oldstat->st_rdev = newstat->st_rdev;
	oldstat->st_atimespec = newstat->st_atimespec;
	oldstat->st_mtimespec = newstat->st_mtimespec;
	oldstat->st_ctimespec = newstat->st_ctimespec;
	oldstat->st_size = newstat->st_size;
	oldstat->st_blocks = newstat->st_blocks;
	oldstat->st_blksize = newstat->st_blksize;
	oldstat->st_flags = newstat->st_flags;
	oldstat->st_gen = newstat->st_gen;
}

/*
 * stat_args(char *path, struct dfbsd12_stat *ub)
 *
 * Get file status; this version follows links.
 *
 * MPALMOSTSAFE
 */
int
sys_dfbsd12_stat(struct dfbsd12_stat_args *uap)
{
	struct nlookupdata nd;
	struct dfbsd12_stat ost;
	struct stat st;
	int error;

	get_mplock();
	error = nlookup_init(&nd, uap->path, UIO_USERSPACE, NLC_FOLLOW);
	if (error == 0) {
		error = kern_stat(&nd, &st);
		if (error == 0) {
			cvtstat(&ost, &st);
			error = copyout(&ost, uap->ub, sizeof(ost));
		}
	}
	nlookup_done(&nd);
	rel_mplock();
	return (error);
}

/*
 * lstat_args(char *path, struct dfbsd12_stat *ub)
 *
 * Get file status; this version does not follow links.
 *
 * MPALMOSTSAFE
 */
int
sys_dfbsd12_lstat(struct dfbsd12_lstat_args *uap)
{
	struct nlookupdata nd;
	struct dfbsd12_stat ost;
	struct stat st;
	int error;

	get_mplock();
	error = nlookup_init(&nd, uap->path, UIO_USERSPACE, 0);
	if (error == 0) {
		error = kern_stat(&nd, &st);
		if (error == 0) {
			cvtstat(&ost, &st);
			error = copyout(&ost, uap->ub, sizeof(ost));
		}
	}
	nlookup_done(&nd);
	rel_mplock();
	return (error);
}

/*
 * fhstat_args(struct fhandle *u_fhp, struct dfbsd12_stat *sb)
 *
 * MPALMOSTSAFE
 */
int
sys_dfbsd12_fhstat(struct dfbsd12_fhstat_args *uap)
{
	struct thread *td = curthread;
	struct dfbsd12_stat osb;
	struct stat sb;
	fhandle_t fh;
	struct mount *mp;
	struct vnode *vp;
	int error;

	/*
	 * Must be super user
	 */
	error = priv_check(td, PRIV_ROOT);
	if (error)
		return (error);
	
	error = copyin(uap->u_fhp, &fh, sizeof(fhandle_t));
	if (error)
		return (error);

	get_mplock();
	if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL) {
		error = ESTALE;
		goto done;
	}
	if ((error = VFS_FHTOVP(mp, NULL, &fh.fh_fid, &vp)))
		goto done;
	error = vn_stat(vp, &sb, td->td_ucred);
	vput(vp);
	if (error)
		goto done;
	cvtstat(&osb, &sb);
	error = copyout(&osb, uap->sb, sizeof(osb));
done:
	rel_mplock();
	return (error);
}

/*
 * dfbsd12_fstat_args(int fd, struct dfbsd12_stat *sb)
 *
 * MPALMOSTSAFE
 */
int
sys_dfbsd12_fstat(struct dfbsd12_fstat_args *uap)
{
	struct dfbsd12_stat ost;
	struct stat st;
	int error;

	get_mplock();
	error = kern_fstat(uap->fd, &st);
	rel_mplock();

	if (error == 0) {
		cvtstat(&ost, &st);
		error = copyout(&ost, uap->sb, sizeof(ost));
	}
	return (error);
}
Commit	Line	Data
f91a71dd JS	1	/*-
	2	* Copyright (c) 2005 The DragonFly Project. All rights reserved.
	3	*
	4	* This code is derived from software contributed to The DragonFly Project
	5	* by Joerg Sonnenberger <joerg@bec.de>.
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that the following conditions
	9	* are met:
	10	*
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in
	15	* the documentation and/or other materials provided with the
	16	* distribution.
	17	* 3. Neither the name of The DragonFly Project nor the names of its
	18	* contributors may be used to endorse or promote products derived
	19	* from this software without specific, prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	22	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	23	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
	24	* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
	25	* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
	26	* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
	27	* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	28	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
	29	* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	30	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
	31	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	32	* SUCH DAMAGE.
	33	*
67863d04	34	* $DragonFly: src/sys/emulation/dragonfly12/dfbsd12_stat.c,v 1.4 2008/09/17 21:44:16 dillon Exp $
f91a71dd JS	35	*/
	36
	37	#include "opt_compatdf12.h"
	38
	39	#include <sys/param.h>
	40	#include <sys/kern_syscall.h>
	41	#include <sys/mount.h>
	42	#include <sys/nlookup.h>
	43	#include <sys/proc.h>
895c1f85	44	#include <sys/priv.h>
f91a71dd JS	45	#include <sys/stat.h>
	46	#include <sys/sysproto.h>
	47	#include <sys/systm.h>
	48	#include <sys/thread.h>
	49	#include <sys/vnode.h>
	50	#include <emulation/dragonfly12/stat.h>
	51
	52	static void
	53	cvtstat(struct dfbsd12_stat oldstat, struct stat newstat)
	54	{
	55	bzero(oldstat, sizeof(oldstat));
	56
	57	oldstat->st_dev = newstat->st_dev;
	58	oldstat->st_ino = newstat->st_ino; /* truncation */
	59	oldstat->st_mode = newstat->st_mode;
	60	oldstat->st_nlink = newstat->st_nlink; /* truncation */
	61	oldstat->st_uid = newstat->st_uid;
	62	oldstat->st_gid = newstat->st_gid;
	63	oldstat->st_rdev = newstat->st_rdev;
	64	oldstat->st_atimespec = newstat->st_atimespec;
	65	oldstat->st_mtimespec = newstat->st_mtimespec;
	66	oldstat->st_ctimespec = newstat->st_ctimespec;
	67	oldstat->st_size = newstat->st_size;
	68	oldstat->st_blocks = newstat->st_blocks;
	69	oldstat->st_blksize = newstat->st_blksize;
	70	oldstat->st_flags = newstat->st_flags;
	71	oldstat->st_gen = newstat->st_gen;
	72	}
	73
	74	/*
	75	* stat_args(char path, struct dfbsd12_stat ub)
	76	*
	77	* Get file status; this version follows links.
3919ced0 MD	78	*
3919ced0 MD	79	* MPALMOSTSAFE
f91a71dd JS	80	*/
f91a71dd JS	81	int
753fd850	82	sys_dfbsd12_stat(struct dfbsd12_stat_args *uap)
f91a71dd JS	83	{
	84	struct nlookupdata nd;
	85	struct dfbsd12_stat ost;
	86	struct stat st;
	87	int error;
	88
3919ced0	89	get_mplock();
f91a71dd JS	90	error = nlookup_init(&nd, uap->path, UIO_USERSPACE, NLC_FOLLOW);
	91	if (error == 0) {
	92	error = kern_stat(&nd, &st);
	93	if (error == 0) {
	94	cvtstat(&ost, &st);
	95	error = copyout(&ost, uap->ub, sizeof(ost));
	96	}
	97	}
	98	nlookup_done(&nd);
3919ced0	99	rel_mplock();
f91a71dd JS	100	return (error);
	101	}
	102
	103	/*
	104	* lstat_args(char path, struct dfbsd12_stat ub)
	105	*
	106	* Get file status; this version does not follow links.
3919ced0 MD	107	*
3919ced0 MD	108	* MPALMOSTSAFE
f91a71dd JS	109	*/
f91a71dd JS	110	int
753fd850	111	sys_dfbsd12_lstat(struct dfbsd12_lstat_args *uap)
f91a71dd JS	112	{
	113	struct nlookupdata nd;
	114	struct dfbsd12_stat ost;
	115	struct stat st;
	116	int error;
	117
3919ced0	118	get_mplock();
f91a71dd JS	119	error = nlookup_init(&nd, uap->path, UIO_USERSPACE, 0);
	120	if (error == 0) {
	121	error = kern_stat(&nd, &st);
	122	if (error == 0) {
	123	cvtstat(&ost, &st);
	124	error = copyout(&ost, uap->ub, sizeof(ost));
	125	}
	126	}
	127	nlookup_done(&nd);
3919ced0	128	rel_mplock();
f91a71dd JS	129	return (error);
	130	}
	131
	132	/*
	133	* fhstat_args(struct fhandle u_fhp, struct dfbsd12_stat sb)
3919ced0 MD	134	*
3919ced0 MD	135	* MPALMOSTSAFE
f91a71dd JS	136	*/
f91a71dd JS	137	int
753fd850	138	sys_dfbsd12_fhstat(struct dfbsd12_fhstat_args *uap)
f91a71dd JS	139	{
	140	struct thread *td = curthread;
	141	struct dfbsd12_stat osb;
	142	struct stat sb;
	143	fhandle_t fh;
	144	struct mount *mp;
	145	struct vnode *vp;
	146	int error;
	147
	148	/*
	149	* Must be super user
	150	*/
895c1f85	151	error = priv_check(td, PRIV_ROOT);
f91a71dd JS	152	if (error)
	153	return (error);
	154
	155	error = copyin(uap->u_fhp, &fh, sizeof(fhandle_t));
	156	if (error)
	157	return (error);
	158
3919ced0 MD	159	get_mplock();
	160	if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL) {
	161	error = ESTALE;
	162	goto done;
	163	}
67863d04	164	if ((error = VFS_FHTOVP(mp, NULL, &fh.fh_fid, &vp)))
3919ced0	165	goto done;
9910d07b	166	error = vn_stat(vp, &sb, td->td_ucred);
f91a71dd JS	167	vput(vp);
f91a71dd JS	168	if (error)
3919ced0	169	goto done;
f91a71dd JS	170	cvtstat(&osb, &sb);
f91a71dd JS	171	error = copyout(&osb, uap->sb, sizeof(osb));
3919ced0 MD	172	done:
3919ced0 MD	173	rel_mplock();
f91a71dd JS	174	return (error);
	175	}
	176
	177	/*
	178	* dfbsd12_fstat_args(int fd, struct dfbsd12_stat *sb)
3919ced0 MD	179	*
3919ced0 MD	180	* MPALMOSTSAFE
f91a71dd JS	181	*/
f91a71dd JS	182	int
753fd850	183	sys_dfbsd12_fstat(struct dfbsd12_fstat_args *uap)
f91a71dd JS	184	{
	185	struct dfbsd12_stat ost;
	186	struct stat st;
	187	int error;
	188
3919ced0	189	get_mplock();
f91a71dd	190	error = kern_fstat(uap->fd, &st);
3919ced0	191	rel_mplock();
f91a71dd JS	192
	193	if (error == 0) {
	194	cvtstat(&ost, &st);
	195	error = copyout(&ost, uap->sb, sizeof(ost));
	196	}
	197	return (error);
	198	}