projects / unix-history / blame
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|---|---|---|
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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 | |
| 44c5e2d6 | 12 | static char sccsid[] = "@(#)move.c 5.2 (Berkeley) %G%"; |
| 5fa1c8be KB |
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 | ||
| 44c5e2d6 | 92 | eval = 0; |
| 5fa1c8be KB |
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 | } |