ops_pcfs.c revision 310490
138494Sobrien/* 2310490Scy * Copyright (c) 1997-2014 Erez Zadok 338494Sobrien * Copyright (c) 1990 Jan-Simon Pendry 438494Sobrien * Copyright (c) 1990 Imperial College of Science, Technology & Medicine 538494Sobrien * Copyright (c) 1990 The Regents of the University of California. 638494Sobrien * All rights reserved. 738494Sobrien * 838494Sobrien * This code is derived from software contributed to Berkeley by 938494Sobrien * Jan-Simon Pendry at Imperial College, London. 1038494Sobrien * 1138494Sobrien * Redistribution and use in source and binary forms, with or without 1238494Sobrien * modification, are permitted provided that the following conditions 1338494Sobrien * are met: 1438494Sobrien * 1. Redistributions of source code must retain the above copyright 1538494Sobrien * notice, this list of conditions and the following disclaimer. 1638494Sobrien * 2. Redistributions in binary form must reproduce the above copyright 1738494Sobrien * notice, this list of conditions and the following disclaimer in the 1838494Sobrien * documentation and/or other materials provided with the distribution. 19310490Scy * 3. Neither the name of the University nor the names of its contributors 2038494Sobrien * may be used to endorse or promote products derived from this software 2138494Sobrien * without specific prior written permission. 2238494Sobrien * 2338494Sobrien * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2438494Sobrien * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2538494Sobrien * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2638494Sobrien * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2738494Sobrien * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2838494Sobrien * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2938494Sobrien * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3038494Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3138494Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3238494Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3338494Sobrien * SUCH DAMAGE. 3438494Sobrien * 3538494Sobrien * 36174313Sobrien * File: am-utils/amd/ops_pcfs.c 3738494Sobrien * 3838494Sobrien */ 3938494Sobrien 4038494Sobrien/* 4138494Sobrien * PC (MS-DOS) file system 4238494Sobrien */ 4338494Sobrien 4438494Sobrien#ifdef HAVE_CONFIG_H 4538494Sobrien# include <config.h> 4638494Sobrien#endif /* HAVE_CONFIG_H */ 4738494Sobrien#include <am_defs.h> 4838494Sobrien#include <amd.h> 4938494Sobrien 5038494Sobrien/* forward definitions */ 5138494Sobrienstatic char *pcfs_match(am_opts *fo); 52174313Sobrienstatic int pcfs_mount(am_node *am, mntfs *mf); 53174313Sobrienstatic int pcfs_umount(am_node *am, mntfs *mf); 5438494Sobrien 5538494Sobrien/* 5638494Sobrien * Ops structure 5738494Sobrien */ 5838494Sobrienam_ops pcfs_ops = 5938494Sobrien{ 6038494Sobrien "pcfs", 6138494Sobrien pcfs_match, 6238494Sobrien 0, /* pcfs_init */ 63174313Sobrien pcfs_mount, 64174313Sobrien pcfs_umount, 65174313Sobrien amfs_error_lookup_child, 66174313Sobrien amfs_error_mount_child, 6738494Sobrien amfs_error_readdir, 6838494Sobrien 0, /* pcfs_readlink */ 6938494Sobrien 0, /* pcfs_mounted */ 7038494Sobrien 0, /* pcfs_umounted */ 71174313Sobrien amfs_generic_find_srvr, 72174313Sobrien 0, /* pcfs_get_wchan */ 73174313Sobrien FS_MKMNT | FS_UBACKGROUND | FS_AMQINFO, /* nfs_fs_flags */ 74174313Sobrien#ifdef HAVE_FS_AUTOFS 75174313Sobrien AUTOFS_PCFS_FS_FLAGS, 76174313Sobrien#endif /* HAVE_FS_AUTOFS */ 7738494Sobrien}; 7838494Sobrien 7938494Sobrien 8038494Sobrien 8138494Sobrien/* 8238494Sobrien * PCFS needs remote filesystem. 8338494Sobrien */ 8438494Sobrienstatic char * 8538494Sobrienpcfs_match(am_opts *fo) 8638494Sobrien{ 8738494Sobrien if (!fo->opt_dev) { 8838494Sobrien plog(XLOG_USER, "pcfs: no source device specified"); 8938494Sobrien return 0; 9038494Sobrien } 9138494Sobrien dlog("PCFS: mounting device \"%s\" on \"%s\"", fo->opt_dev, fo->opt_fs); 9238494Sobrien 9338494Sobrien /* 9438494Sobrien * Determine magic cookie to put in mtab 9538494Sobrien */ 96310490Scy return xstrdup(fo->opt_dev); 9738494Sobrien} 9838494Sobrien 9938494Sobrien 10038494Sobrienstatic int 101174313Sobrienmount_pcfs(char *mntdir, char *fs_name, char *opts, int on_autofs) 10238494Sobrien{ 10338494Sobrien pcfs_args_t pcfs_args; 10438494Sobrien mntent_t mnt; 10538494Sobrien int flags; 106174313Sobrien#if defined(HAVE_PCFS_ARGS_T_MASK) || defined(HAVE_PCFS_ARGS_T_DIRMASK) 107174313Sobrien int mask; 108174313Sobrien#endif /* defined(HAVE_PCFS_ARGS_T_MASK) || defined(HAVE_PCFS_ARGS_T_DIRMASK) */ 109174313Sobrien#if defined(HAVE_PCFS_ARGS_T_UID) || defined(HAVE_PCFS_ARGS_T_UID) 110174313Sobrien char *str; 111174313Sobrien#endif /* defined(HAVE_PCFS_ARGS_T_UID) || defined(HAVE_PCFS_ARGS_T_UID) */ 11238494Sobrien 11338494Sobrien /* 11438494Sobrien * Figure out the name of the file system type. 11538494Sobrien */ 11638494Sobrien MTYPE_TYPE type = MOUNT_TYPE_PCFS; 11738494Sobrien 11838494Sobrien memset((voidp) &pcfs_args, 0, sizeof(pcfs_args)); /* Paranoid */ 11938494Sobrien 12038494Sobrien /* 12138494Sobrien * Fill in the mount structure 12238494Sobrien */ 12338494Sobrien memset((voidp) &mnt, 0, sizeof(mnt)); 124174313Sobrien mnt.mnt_dir = mntdir; 12538494Sobrien mnt.mnt_fsname = fs_name; 12638494Sobrien mnt.mnt_type = MNTTAB_TYPE_PCFS; 12738494Sobrien mnt.mnt_opts = opts; 12838494Sobrien 12938494Sobrien flags = compute_mount_flags(&mnt); 130174313Sobrien#ifdef HAVE_FS_AUTOFS 131174313Sobrien if (on_autofs) 132174313Sobrien flags |= autofs_compute_mount_flags(&mnt); 133174313Sobrien#endif /* HAVE_FS_AUTOFS */ 134174313Sobrien if (amuDebug(D_TRACE)) 135174313Sobrien plog(XLOG_DEBUG, "mount_pcfs: flags=0x%x", (u_int) flags); 13638494Sobrien 137119679Smbr#ifdef HAVE_PCFS_ARGS_T_FSPEC 13838494Sobrien pcfs_args.fspec = fs_name; 139119679Smbr#endif /* HAVE_PCFS_ARGS_T_FSPEC */ 14038494Sobrien 141119679Smbr#ifdef HAVE_PCFS_ARGS_T_MASK 14238494Sobrien pcfs_args.mask = 0777; /* this may be the msdos file modes */ 143174313Sobrien if ((mask = hasmntval(&mnt, MNTTAB_OPT_MASK)) > 0) 144174313Sobrien pcfs_args.mask = mask; 145174313Sobrien if (amuDebug(D_TRACE)) 146174313Sobrien plog(XLOG_DEBUG, "mount_pcfs: mask=%o (octal)", (u_int) pcfs_args.mask); 147119679Smbr#endif /* HAVE_PCFS_ARGS_T_MASK */ 14838494Sobrien 149131709Smbr#ifdef HAVE_PCFS_ARGS_T_DIRMASK 150174313Sobrien pcfs_args.dirmask = 0777; /* this may be the msdos dir modes */ 151174313Sobrien if ((mask = hasmntval(&mnt, MNTTAB_OPT_DIRMASK)) > 0) 152174313Sobrien pcfs_args.dirmask = mask; 153174313Sobrien if (amuDebug(D_TRACE)) 154174313Sobrien plog(XLOG_DEBUG, "mount_pcfs: dirmask=%o (octal)", (u_int) pcfs_args.dirmask); 155131709Smbr#endif /* HAVE_PCFS_ARGS_T_DIRMASK */ 156131709Smbr 157119679Smbr#ifdef HAVE_PCFS_ARGS_T_UID 158174313Sobrien pcfs_args.uid = 0; /* default to root */ 159174313Sobrien if ((str = hasmntstr(&mnt, MNTTAB_OPT_USER)) != NULL) { 160174313Sobrien struct passwd *pw; 161174313Sobrien if ((pw = getpwnam(str)) != NULL) 162174313Sobrien pcfs_args.uid = pw->pw_uid; 163174313Sobrien else /* maybe used passed a UID number, not user name */ 164174313Sobrien pcfs_args.uid = atoi(str); /* atoi returns '0' if it failed */ 165174313Sobrien XFREE(str); 166174313Sobrien } 167174313Sobrien if (amuDebug(D_TRACE)) 168174313Sobrien plog(XLOG_DEBUG, "mount_pcfs: uid=%d", (int) pcfs_args.uid); 169119679Smbr#endif /* HAVE_PCFS_ARGS_T_UID */ 17038494Sobrien 171119679Smbr#ifdef HAVE_PCFS_ARGS_T_GID 172174313Sobrien pcfs_args.gid = 0; /* default to wheel/root group */ 173174313Sobrien if ((str = hasmntstr(&mnt, MNTTAB_OPT_GROUP)) != NULL) { 174174313Sobrien struct group *gr; 175174313Sobrien if ((gr = getgrnam(str)) != NULL) 176174313Sobrien pcfs_args.gid = gr->gr_gid; 177174313Sobrien else /* maybe used passed a GID number, not group name */ 178174313Sobrien pcfs_args.gid = atoi(str); /* atoi returns '0' if it failed */ 179174313Sobrien XFREE(str); 180174313Sobrien } 181174313Sobrien if (amuDebug(D_TRACE)) 182174313Sobrien plog(XLOG_DEBUG, "mount_pcfs: gid=%d", (int) pcfs_args.gid); 183119679Smbr#endif /* HAVE_PCFS_ARGS_T_GID */ 18438494Sobrien 185119679Smbr#ifdef HAVE_PCFS_ARGS_T_SECONDSWEST 18638494Sobrien pcfs_args.secondswest = 0; /* XXX: fill in correct values */ 187119679Smbr#endif /* HAVE_PCFS_ARGS_T_SECONDSWEST */ 188119679Smbr#ifdef HAVE_PCFS_ARGS_T_DSTTIME 18938494Sobrien pcfs_args.dsttime = 0; /* XXX: fill in correct values */ 190119679Smbr#endif /* HAVE_PCFS_ARGS_T_DSTTIME */ 19138494Sobrien 19238494Sobrien /* 19338494Sobrien * Call generic mount routine 19438494Sobrien */ 195174313Sobrien return mount_fs(&mnt, flags, (caddr_t) & pcfs_args, 0, type, 0, NULL, mnttab_file_name, on_autofs); 19638494Sobrien} 19738494Sobrien 19838494Sobrien 19938494Sobrienstatic int 200174313Sobrienpcfs_mount(am_node *am, mntfs *mf) 20138494Sobrien{ 202174313Sobrien int on_autofs = mf->mf_flags & MFF_ON_AUTOFS; 20338494Sobrien int error; 20438494Sobrien 205174313Sobrien error = mount_pcfs(mf->mf_mount, mf->mf_info, mf->mf_mopts, on_autofs); 20638494Sobrien if (error) { 20738494Sobrien errno = error; 20838494Sobrien plog(XLOG_ERROR, "mount_pcfs: %m"); 20938494Sobrien return error; 21038494Sobrien } 21138494Sobrien 21238494Sobrien return 0; 21338494Sobrien} 21438494Sobrien 21538494Sobrien 21638494Sobrienstatic int 217174313Sobrienpcfs_umount(am_node *am, mntfs *mf) 21838494Sobrien{ 219174313Sobrien int unmount_flags = (mf->mf_flags & MFF_ON_AUTOFS) ? AMU_UMOUNT_AUTOFS : 0; 220174313Sobrien 221174313Sobrien return UMOUNT_FS(mf->mf_mount, mnttab_file_name, unmount_flags); 22238494Sobrien} 223