1 /* 2 * Copyright (c) 1987 Regents of the University of California. 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 the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 char copyright[] = 36 "@(#) Copyright (c) 1987 Regents of the University of California.\n\ 37 All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static char sccsid[] = "@(#)vipw.c 5.16 (Berkeley) 3/3/91"; 42 #endif /* not lint */ 43 44 #include <sys/types.h> 45 #include <sys/stat.h> 46 #include <pwd.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 51 char *progname = "vipw"; 52 char *tempname; 53 54 main() 55 { 56 register int pfd, tfd; 57 struct stat begin, end; 58 59 pw_init(); 60 pfd = pw_lock(); 61 tfd = pw_tmp(); 62 copyfile(pfd, tfd); 63 (void)close(tfd); 64 65 for (;;) { 66 if (stat(tempname, &begin)) 67 pw_error(tempname, 1, 1); 68 pw_edit(0); 69 if (stat(tempname, &end)) 70 pw_error(tempname, 1, 1); 71 if (begin.st_mtime == end.st_mtime) { 72 (void)fprintf(stderr, "vipw: no changes made\n"); 73 pw_error((char *)NULL, 0, 0); 74 } 75 if (pw_mkdb()) 76 break; 77 pw_prompt(); 78 } 79 exit(0); 80 } 81 82 copyfile(from, to) 83 register int from, to; 84 { 85 register int nr, nw, off; 86 char buf[8*1024]; 87 88 while ((nr = read(from, buf, sizeof(buf))) > 0) 89 for (off = 0; off < nr; nr -= nw, off += nw) 90 if ((nw = write(to, buf + off, nr)) < 0) 91 pw_error(tempname, 1, 1); 92 if (nr < 0) 93 pw_error(_PATH_MASTERPASSWD, 1, 1); 94 } 95