1 /* 2 * Copyright (c) 2000, Boris Popov 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Boris Popov. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $Id: file.c,v 1.4 2004/12/13 00:25:21 lindak Exp $ 33 */ 34 35 #pragma ident "%Z%%M% %I% %E% SMI" 36 37 #include <sys/param.h> 38 #include <sys/ioctl.h> 39 #include <sys/time.h> 40 #include <sys/mount.h> 41 #include <fcntl.h> 42 #include <ctype.h> 43 #include <errno.h> 44 #include <stdio.h> 45 #include <string.h> 46 #include <strings.h> 47 #include <stdlib.h> 48 #include <pwd.h> 49 #include <grp.h> 50 #include <unistd.h> 51 52 #include <sys/types.h> 53 extern uid_t real_uid, eff_uid; 54 55 #include <netsmb/smb_lib.h> 56 #include <cflib.h> 57 58 int 59 smb_read(struct smb_ctx *ctx, smbfh fh, off_t offset, size_t count, char *dst) 60 { 61 struct smbioc_rw rwrq; 62 63 bzero(&rwrq, sizeof (rwrq)); 64 rwrq.ioc_fh = fh; 65 rwrq.ioc_base = dst; 66 rwrq.ioc_cnt = count; 67 rwrq.ioc_offset = offset; 68 seteuid(eff_uid); 69 if (ioctl(ctx->ct_fd, SMBIOC_READ, &rwrq) == -1) { 70 seteuid(real_uid); /* and back to real user */ 71 return (-1); 72 } 73 seteuid(real_uid); /* and back to real user */ 74 return (rwrq.ioc_cnt); 75 } 76 77 int 78 smb_write(struct smb_ctx *ctx, smbfh fh, off_t offset, size_t count, 79 const char *src) 80 { 81 struct smbioc_rw rwrq; 82 83 bzero(&rwrq, sizeof (rwrq)); 84 rwrq.ioc_fh = fh; 85 rwrq.ioc_base = (char *)src; 86 rwrq.ioc_cnt = count; 87 rwrq.ioc_offset = offset; 88 seteuid(eff_uid); 89 if (ioctl(ctx->ct_fd, SMBIOC_WRITE, &rwrq) == -1) { 90 seteuid(real_uid); /* and back to real user */ 91 return (-1); 92 } 93 seteuid(real_uid); /* and back to real user */ 94 return (rwrq.ioc_cnt); 95 } 96