1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Hugh Smith at The University of Guelph. 7 * 8 * %sccs.include.redist.c% 9 */ 10 11 #ifndef lint 12 static char sccsid[] = "@(#)move.c 5.2 (Berkeley) 01/21/91"; 13 #endif /* not lint */ 14 15 #include <sys/param.h> 16 #include <sys/stat.h> 17 #include <fcntl.h> 18 #include <unistd.h> 19 #include <dirent.h> 20 #include <stdio.h> 21 #include <ar.h> 22 #include "archive.h" 23 #include "pathnames.h" 24 25 extern CHDR chdr; /* converted header */ 26 extern char *archive; /* archive name */ 27 extern char *tname; /* temporary file "name" */ 28 29 /* 30 * move -- 31 * Change location of named members in archive - if 'b' or 'i' option 32 * selected then named members are placed before 'posname'. If 'a' 33 * option selected members go after 'posname'. If no options, members 34 * are moved to end of archive. 35 */ 36 move(argv) 37 char **argv; 38 { 39 extern char *posname; /* positioning file name */ 40 CF cf; 41 off_t size, tsize; 42 int afd, curfd, eval, mods, tfd1, tfd2, tfd3; 43 44 afd = open_archive(O_RDWR); 45 mods = options & (AR_A|AR_B); 46 47 tfd1 = tmp(); /* Files before key file. */ 48 tfd2 = tmp(); /* Files selected by user. */ 49 tfd3 = tmp(); /* Files after key file. */ 50 51 /* 52 * Break archive into three parts -- selected entries and entries 53 * before and after the key entry. If positioning before the key, 54 * place the key at the beginning of the after key entries and if 55 * positioning after the key, place the key at the end of the before 56 * key entries. Put it all back together at the end. 57 */ 58 SETCF(afd, archive, 0, tname, RPAD|WPAD); 59 for (curfd = tfd1; get_header(afd);) { 60 if (*argv && files(argv)) { 61 if (options & AR_V) 62 (void)printf("m - %s\n", chdr.name); 63 cf.wfd = tfd2; 64 put_header(&cf, (struct stat *)NULL); 65 copyfile(&cf, chdr.size); 66 continue; 67 } 68 if (mods && compare(posname)) { 69 mods = 0; 70 if (options & AR_B) 71 curfd = tfd3; 72 cf.wfd = curfd; 73 put_header(&cf, (struct stat *)NULL); 74 copyfile(&cf, chdr.size); 75 if (options & AR_A) 76 curfd = tfd3; 77 } else { 78 cf.wfd = curfd; 79 put_header(&cf, (struct stat *)NULL); 80 copyfile(&cf, chdr.size); 81 } 82 } 83 84 if (mods) { 85 (void)fprintf(stderr, "ar: %s: archive member not found.\n", 86 posname); 87 close_archive(afd); 88 return(1); 89 } 90 (void)lseek(afd, (off_t)SARMAG, SEEK_SET); 91 92 eval = 0; 93 ORPHANS; 94 95 SETCF(tfd1, tname, afd, archive, RPAD|WPAD); 96 tsize = size = lseek(tfd1, (off_t)0, SEEK_CUR); 97 (void)lseek(tfd1, (off_t)0, SEEK_SET); 98 copyfile(&cf, size); 99 100 tsize += size = lseek(tfd2, (off_t)0, SEEK_CUR); 101 (void)lseek(tfd2, (off_t)0, SEEK_SET); 102 cf.rfd = tfd2; 103 copyfile(&cf, size); 104 105 tsize += size = lseek(tfd3, (off_t)0, SEEK_CUR); 106 (void)lseek(tfd3, (off_t)0, SEEK_SET); 107 cf.rfd = tfd3; 108 copyfile(&cf, size); 109 110 (void)ftruncate(afd, tsize + SARMAG); 111 close_archive(afd); 112 return(eval); 113 } 114