1 /* 2 * Copyright (c) 1987 Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 char copyright[] = 10 "@(#) Copyright (c) 1987 Regents of the University of California.\n\ 11 All rights reserved.\n"; 12 #endif /* not lint */ 13 14 #ifndef lint 15 static char sccsid[] = "@(#)vipw.c 5.16 (Berkeley) 03/03/91"; 16 #endif /* not lint */ 17 18 #include <sys/types.h> 19 #include <sys/stat.h> 20 #include <pwd.h> 21 #include <stdio.h> 22 #include <stdlib.h> 23 #include <string.h> 24 25 char *progname = "vipw"; 26 char *tempname; 27 28 main() 29 { 30 register int pfd, tfd; 31 struct stat begin, end; 32 33 pw_init(); 34 pfd = pw_lock(); 35 tfd = pw_tmp(); 36 copyfile(pfd, tfd); 37 (void)close(tfd); 38 39 for (;;) { 40 if (stat(tempname, &begin)) 41 pw_error(tempname, 1, 1); 42 pw_edit(0); 43 if (stat(tempname, &end)) 44 pw_error(tempname, 1, 1); 45 if (begin.st_mtime == end.st_mtime) { 46 (void)fprintf(stderr, "vipw: no changes made\n"); 47 pw_error((char *)NULL, 0, 0); 48 } 49 if (pw_mkdb()) 50 break; 51 pw_prompt(); 52 } 53 exit(0); 54 } 55 56 copyfile(from, to) 57 register int from, to; 58 { 59 register int nr, nw, off; 60 char buf[8*1024]; 61 62 while ((nr = read(from, buf, sizeof(buf))) > 0) 63 for (off = 0; off < nr; nr -= nw, off += nw) 64 if ((nw = write(to, buf + off, nr)) < 0) 65 pw_error(tempname, 1, 1); 66 if (nr < 0) 67 pw_error(_PATH_MASTERPASSWD, 1, 1); 68 } 69