Return to filesys-os.c CVS log

Up to [local] / src / usr.bin / rdistd

rcsid[] and sccsid[] and copyright[] are essentially unmaintained (and
unmaintainable).  these days, people use source.  these id's do not provide
any benefit, and do hurt the small install media
(the 33,000 line diff is essentially mechanical)
ok with the idea millert, ok dms

/*	$OpenBSD: filesys-os.c,v 1.10 2009/10/27 23:59:42 deraadt Exp $	*/

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * 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 University 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 REGENTS 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 REGENTS 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.
 */

#include "defs.h"

/*
 * OS specific file system routines
 */

#if 	FSI_TYPE == FSI_GETFSSTAT
static struct statfs   *mnt = NULL;
#endif	/* FSI_GETFSSTAT */

#if	FSI_TYPE == FSI_MNTCTL
static struct vmount   *mnt = NULL;
#endif	/* FSI_MNTCTL */

#if	(FSI_TYPE == FSI_MNTCTL) || (FSI_TYPE == FSI_GETFSSTAT)
static char 	       *mntbuf = NULL;
static int 		entries_left;
#endif	/* FSI_MNTCTL || FSI_GETFSSTAT */

#if	FSI_TYPE == FSI_MNTCTL
/*
 * AIX version of setmountent()
 */
FILE *
setmountent(const char *file, const char *mode)
{
	ulong size;

	if (mntbuf)
		(void) free(mntbuf);

	mntctl(MCTL_QUERY, sizeof(size), &size);
	mntbuf = (char *) xmalloc(size);

	entries_left = mntctl(MCTL_QUERY, size, mntbuf);
	if (!entries_left)
		return(NULL);

	mnt = (struct vmount *)mntbuf;
	return((FILE *) 1);
}
#endif	/* FSI_MNTCTL */

#if	FSI_TYPE == FSI_GETFSSTAT
/*
 * getfsstat() version of get mount info routines.
 */
FILE *
setmountent(const char *file, const char *mode)
{
	long size;

	if (mntbuf)
		(void) free(mntbuf);

	size = getfsstat(NULL, 0, MNT_WAIT);
	if (size == -1)
		return (NULL);
	size *= sizeof(struct statfs);
	mntbuf = (char *) xmalloc(size);

	entries_left = getfsstat((struct statfs *)mntbuf, size, MNT_WAIT);
	if (entries_left == -1)
		return(NULL);

	mnt = (struct statfs *) mntbuf;

	return((FILE *) 1);
}
#endif	/* FSI_GETFSSTAT */

#if	FSI_TYPE == FSI_MNTCTL
/* 
 * AIX version of getmountent() 
 */
/*
 * Iterate over mount entries
 */
mntent_t *
getmountent(FILE *fptr)
{
	static mntent_t mntstruct;

	if (!entries_left)
		return((mntent_t*)0);

	bzero((char *) &mntstruct, sizeof(mntstruct));

	if (mnt->vmt_flags & MNT_READONLY)
		mntstruct.me_flags |= MEFLAG_READONLY;

	mntstruct.me_path = vmt2dataptr(mnt, VMT_STUB);
	switch ((ulong)(struct vmount*)mnt->vmt_gfstype) {
	      case MNT_NFS:
		mntstruct.me_type = METYPE_NFS;
		break;
	      default:
		mntstruct.me_type = METYPE_OTHER;
		break;
	}

	mnt = (struct vmount*)((mnt->vmt_length)+(char *)mnt);
	entries_left--;

	return(&mntstruct);
}
#endif	/* FSI_MNTCTL */

#if	FSI_TYPE == FSI_GETFSSTAT
/*
 * getfsstat() version of getmountent()
 */
mntent_t *
getmountent(FILE *fptr)
{
	static mntent_t mntstruct;
	static char remote_dev[MAXHOSTNAMELEN+MAXPATHLEN+1];

	if (!entries_left)
		return((mntent_t*)0);

	bzero((char *) &mntstruct, sizeof(mntstruct));

#if	defined(MNT_RDONLY)
	if (mnt->f_flags & MNT_RDONLY)
		mntstruct.me_flags |= MEFLAG_READONLY;
#endif
#if	defined(M_RDONLY)
	if (mnt->f_flags & M_RDONLY)
		mntstruct.me_flags |= MEFLAG_READONLY;
#endif

#ifdef HAVE_FSTYPENAME
	if (strcmp(mnt->f_fstypename, "nfs") == 0)
#else
	if (mnt->f_type == MOUNT_NFS)
#endif	/* HAVE_FSTYPENAME */
	{
		strlcpy(remote_dev, mnt->f_mntfromname, sizeof(remote_dev));
		mntstruct.me_path = remote_dev;
		mntstruct.me_type = METYPE_NFS;
	} else {
		mntstruct.me_path = mnt->f_mntonname;
		mntstruct.me_type = METYPE_OTHER;
	}

	mnt++;
	entries_left--;

	return(&mntstruct);
}
#endif

#if	(FSI_TYPE == FSI_MNTCTL) || (FSI_TYPE == FSI_GETFSSTAT)
/*
 * Done with iterations
 */
void
endmountent(FILE *fptr)
{
	mnt = NULL;

	if (mntbuf) {
		(void) free(mntbuf);
		mntbuf = NULL;
	}
}
#endif	/* FSI_MNTCTL || FSI_GETFSSTAT */

#if	FSI_TYPE == FSI_GETMNTENT2
/*
 * Prepare to iterate over mounted filesystem list
 */
FILE *
setmountent(const char *file, const char *mode)
{
	return(fopen(file, mode));
}

/*
 * Done with iteration
 */
void
endmountent(FILE *fptr)
{
	fclose(fptr);
}

/*
 * Iterate over mount entries
 */
mntent_t *
getmountent(FILE *fptr)
{
	static mntent_t me;
	static struct mnttab mntent;

	bzero((char *)&me, sizeof(mntent_t));

#if     defined(UNICOS)
        if (getmntent(fptr, &mntent) != NULL) {
#else
        if (getmntent(fptr, &mntent) != -1) {
#endif
		me.me_path = mntent.mnt_mountp;
		me.me_type = mntent.mnt_fstype;
		if (mntent.mnt_mntopts && hasmntopt(&mntent, MNTOPT_RO))
			me.me_flags |= MEFLAG_READONLY;

#if	defined(MNTTYPE_IGNORE)
		if (strcmp(mntent.mnt_fstype, MNTTYPE_IGNORE) == 0)
			me.me_flags |= MEFLAG_IGNORE;
#endif	/* MNTTYPE_IGNORE */
#if	defined(MNTTYPE_SWAP)
		if (strcmp(mntent.mnt_fstype, MNTTYPE_SWAP) == 0)
			me.me_flags |= MEFLAG_IGNORE;
#endif	/* MNTTYPE_SWAP */

		return(&me);
	} else
		return(NULL);
}
#endif	/* FSI_GETMNTNET2 */

#if	FSI_TYPE == FSI_GETMNTENT
/*
 * Prepare to iterate over mounted filesystem list
 */
FILE *
setmountent(const char *file, const char *mode)
{
	return(setmntent(file, mode));
}

/*
 * Done with iteration
 */
void
endmountent(FILE *fptr)
{
	endmntent(fptr);
}

/*
 * Iterate over mount entries
 */
mntent_t *
getmountent(FILE *fptr)
{
	static mntent_t me;
	struct mntent *mntent;

	bzero((char *)&me, sizeof(mntent_t));

	if ((mntent = getmntent(fptr)) != NULL) {
		me.me_path = mntent->mnt_dir;
		me.me_type = mntent->mnt_type;
		if (mntent->mnt_opts && hasmntopt(mntent, MNTOPT_RO))
			me.me_flags |= MEFLAG_READONLY;

#if	defined(MNTTYPE_IGNORE)
		if (strcmp(mntent->mnt_type, MNTTYPE_IGNORE) == 0)
			me.me_flags |= MEFLAG_IGNORE;
#endif	/* MNTTYPE_IGNORE */
#if	defined(MNTTYPE_SWAP)
		if (strcmp(mntent->mnt_type, MNTTYPE_SWAP) == 0)
			me.me_flags |= MEFLAG_IGNORE;
#endif	/* MNTTYPE_SWAP */

		return(&me);
	} else
		return(NULL);
}
#endif	/* FSI_GETMNTNET */

#if	FSI_TYPE == FSI_GETMNT
/*
 * getmnt() interface (Ultrix)
 */

#include <sys/fs_types.h>

static int startmounts = 0;

FILE *
setmountent(const char *file, const char *mode)
{
	startmounts = 0;
	return((FILE *) 1);
}

void
endmountent(FILE *fptr)
{
	/* NOOP */
}

/*
 * Iterate over mounted filesystems using getmnt()
 */
mntent_t *
getmountent(FILE *fptr)
{
	struct fs_data fs_data;
	static mntent_t me;

	if (getmnt(&startmounts, &fs_data, sizeof(fs_data), NOSTAT_MANY, 
		   NULL) <= 0)
		return(NULL);

	bzero((char *)&me, sizeof(mntent_t));
	me.me_path = fs_data.fd_path;
	if (fs_data.fd_fstype == GT_NFS)
		me.me_type = METYPE_NFS;
	else
		me.me_type = METYPE_OTHER;

	if (fs_data.fd_flags & M_RONLY)
		me.me_flags |= MEFLAG_READONLY;

	return(&me);
}
#endif	/* FSI_GETMNT */

/*
 * Make a new (copy) of a mntent structure.
 */
mntent_t *
newmountent(const mntent_t *old)
{
	mntent_t *new;

	if (!old)
		return(NULL);

	new = (mntent_t *) xcalloc(1, sizeof(mntent_t));
	new->me_path = xstrdup(old->me_path);
	new->me_type = xstrdup(old->me_type);
	new->me_flags = old->me_flags;

	return(new);
}