Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 2 | /* |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 3 | * Mini tar implementation for busybox |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 4 | * |
Eric Andersen | aff114c | 2004-04-14 17:51:38 +0000 | [diff] [blame] | 5 | * Modified to use common extraction code used by ar, cpio, dpkg-deb, dpkg |
Denis Vlasenko | 0beaff8 | 2007-09-21 13:16:32 +0000 | [diff] [blame] | 6 | * by Glenn McGrath |
Glenn L McGrath | 2e772ed | 2001-10-05 02:58:48 +0000 | [diff] [blame] | 7 | * |
Erik Andersen | 61677fe | 2000-04-13 01:18:56 +0000 | [diff] [blame] | 8 | * Note, that as of BusyBox-0.43, tar has been completely rewritten from the |
Eric Andersen | aff114c | 2004-04-14 17:51:38 +0000 | [diff] [blame] | 9 | * ground up. It still has remnants of the old code lying about, but it is |
Eric Andersen | 77d9268 | 2001-05-23 20:32:09 +0000 | [diff] [blame] | 10 | * very different now (i.e., cleaner, less global variables, etc.) |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 11 | * |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 12 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> |
Eric Andersen | 96bcfd3 | 1999-11-12 01:30:18 +0000 | [diff] [blame] | 13 | * |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 14 | * Based in part in the tar implementation in sash |
| 15 | * Copyright (c) 1999 by David I. Bell |
| 16 | * Permission is granted to use, distribute, or modify this source, |
| 17 | * provided that this copyright notice remains intact. |
| 18 | * Permission to distribute sash derived code under the GPL has been granted. |
| 19 | * |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 20 | * Based in part on the tar implementation from busybox-0.28 |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 21 | * Copyright (C) 1995 Bruce Perens |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 22 | * |
Bernhard Reutner-Fischer | d9cf7ac | 2006-04-12 18:39:58 +0000 | [diff] [blame] | 23 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 24 | */ |
| 25 | |
Rob Landley | 1bfca7b | 2006-09-10 03:20:37 +0000 | [diff] [blame] | 26 | #include <fnmatch.h> |
Denis Vlasenko | b6adbf1 | 2007-05-26 19:00:18 +0000 | [diff] [blame] | 27 | #include "libbb.h" |
Denis Vlasenko | 218f2f4 | 2007-01-24 22:02:01 +0000 | [diff] [blame] | 28 | #include "unarchive.h" |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 29 | |
Denis Vlasenko | 87cf2ee | 2008-02-13 17:06:53 +0000 | [diff] [blame] | 30 | /* FIXME: Stop using this non-standard feature */ |
| 31 | #ifndef FNM_LEADING_DIR |
| 32 | #define FNM_LEADING_DIR 0 |
| 33 | #endif |
| 34 | |
Denis Vlasenko | 431a7c9 | 2008-02-19 11:26:28 +0000 | [diff] [blame] | 35 | |
Denis Vlasenko | 74324c8 | 2007-06-04 10:16:52 +0000 | [diff] [blame] | 36 | #define block_buf bb_common_bufsiz1 |
| 37 | |
Denis Vlasenko | 431a7c9 | 2008-02-19 11:26:28 +0000 | [diff] [blame] | 38 | |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 39 | #if !ENABLE_FEATURE_SEAMLESS_GZ && !ENABLE_FEATURE_SEAMLESS_BZ2 |
Denis Vlasenko | 431a7c9 | 2008-02-19 11:26:28 +0000 | [diff] [blame] | 40 | /* Do not pass gzip flag to writeTarFile() */ |
| 41 | #define writeTarFile(tar_fd, verboseFlag, dereferenceFlag, include, exclude, gzip) \ |
| 42 | writeTarFile(tar_fd, verboseFlag, dereferenceFlag, include, exclude) |
| 43 | #endif |
| 44 | |
| 45 | |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 46 | #if ENABLE_FEATURE_TAR_CREATE |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 47 | |
Glenn L McGrath | 2e772ed | 2001-10-05 02:58:48 +0000 | [diff] [blame] | 48 | /* Tar file constants */ |
Glenn L McGrath | 2e772ed | 2001-10-05 02:58:48 +0000 | [diff] [blame] | 49 | |
Rob Landley | 3ee6c24 | 2005-10-15 03:06:21 +0000 | [diff] [blame] | 50 | #define TAR_BLOCK_SIZE 512 |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 51 | |
Erik Andersen | 298854f | 2000-03-23 01:09:18 +0000 | [diff] [blame] | 52 | /* POSIX tar Header Block, from POSIX 1003.1-1990 */ |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 53 | #define NAME_SIZE 100 |
| 54 | #define NAME_SIZE_STR "100" |
Denis Vlasenko | 218f2f4 | 2007-01-24 22:02:01 +0000 | [diff] [blame] | 55 | typedef struct TarHeader TarHeader; |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 56 | struct TarHeader { /* byte offset */ |
| 57 | char name[NAME_SIZE]; /* 0-99 */ |
| 58 | char mode[8]; /* 100-107 */ |
| 59 | char uid[8]; /* 108-115 */ |
| 60 | char gid[8]; /* 116-123 */ |
| 61 | char size[12]; /* 124-135 */ |
| 62 | char mtime[12]; /* 136-147 */ |
| 63 | char chksum[8]; /* 148-155 */ |
| 64 | char typeflag; /* 156-156 */ |
| 65 | char linkname[NAME_SIZE]; /* 157-256 */ |
Denis Vlasenko | 8512862 | 2007-11-16 20:35:30 +0000 | [diff] [blame] | 66 | /* POSIX: "ustar" NUL "00" */ |
| 67 | /* GNU tar: "ustar " NUL */ |
Paul Fox | 16aec39 | 2007-11-17 19:11:05 +0000 | [diff] [blame] | 68 | /* Normally it's defined as magic[6] followed by |
| 69 | * version[2], but we put them together to save code. |
| 70 | */ |
Denis Vlasenko | 8512862 | 2007-11-16 20:35:30 +0000 | [diff] [blame] | 71 | char magic[8]; /* 257-264 */ |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 72 | char uname[32]; /* 265-296 */ |
| 73 | char gname[32]; /* 297-328 */ |
| 74 | char devmajor[8]; /* 329-336 */ |
| 75 | char devminor[8]; /* 337-344 */ |
| 76 | char prefix[155]; /* 345-499 */ |
Paul Fox | 16aec39 | 2007-11-17 19:11:05 +0000 | [diff] [blame] | 77 | char padding[12]; /* 500-512 (pad to exactly TAR_BLOCK_SIZE) */ |
Erik Andersen | 298854f | 2000-03-23 01:09:18 +0000 | [diff] [blame] | 78 | }; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 79 | |
Eric Andersen | 3d957c8 | 2000-12-07 00:34:58 +0000 | [diff] [blame] | 80 | /* |
Denis Vlasenko | 4fbb584 | 2006-11-24 14:55:23 +0000 | [diff] [blame] | 81 | ** writeTarFile(), writeFileToTarball(), and writeTarHeader() are |
Eric Andersen | 3d957c8 | 2000-12-07 00:34:58 +0000 | [diff] [blame] | 82 | ** the only functions that deal with the HardLinkInfo structure. |
| 83 | ** Even these functions use the xxxHardLinkInfo() functions. |
| 84 | */ |
| 85 | typedef struct HardLinkInfo HardLinkInfo; |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 86 | struct HardLinkInfo { |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 87 | HardLinkInfo *next; /* Next entry in list */ |
| 88 | dev_t dev; /* Device number */ |
| 89 | ino_t ino; /* Inode number */ |
| 90 | short linkCount; /* (Hard) Link Count */ |
| 91 | char name[1]; /* Start of filename (must be last) */ |
Eric Andersen | 3d957c8 | 2000-12-07 00:34:58 +0000 | [diff] [blame] | 92 | }; |
| 93 | |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 94 | /* Some info to be carried along when creating a new tarball */ |
Denis Vlasenko | 218f2f4 | 2007-01-24 22:02:01 +0000 | [diff] [blame] | 95 | typedef struct TarBallInfo TarBallInfo; |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 96 | struct TarBallInfo { |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 97 | int tarFd; /* Open-for-write file descriptor |
| 98 | * for the tarball */ |
| 99 | struct stat statBuf; /* Stat info for the tarball, letting |
| 100 | * us know the inode and device that the |
| 101 | * tarball lives, so we can avoid trying |
| 102 | * to include the tarball into itself */ |
| 103 | int verboseFlag; /* Whether to print extra stuff or not */ |
| 104 | const llist_t *excludeList; /* List of files to not include */ |
| 105 | HardLinkInfo *hlInfoHead; /* Hard Link Tracking Information */ |
| 106 | HardLinkInfo *hlInfo; /* Hard Link Info for the current file */ |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 107 | }; |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 108 | |
Glenn L McGrath | 2e772ed | 2001-10-05 02:58:48 +0000 | [diff] [blame] | 109 | /* A nice enum with all the possible tar file content types */ |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 110 | enum TarFileType { |
| 111 | REGTYPE = '0', /* regular file */ |
| 112 | REGTYPE0 = '\0', /* regular file (ancient bug compat) */ |
| 113 | LNKTYPE = '1', /* hard link */ |
| 114 | SYMTYPE = '2', /* symbolic link */ |
| 115 | CHRTYPE = '3', /* character special */ |
| 116 | BLKTYPE = '4', /* block special */ |
| 117 | DIRTYPE = '5', /* directory */ |
| 118 | FIFOTYPE = '6', /* FIFO special */ |
| 119 | CONTTYPE = '7', /* reserved */ |
| 120 | GNULONGLINK = 'K', /* GNU long (>100 chars) link name */ |
| 121 | GNULONGNAME = 'L', /* GNU long (>100 chars) file name */ |
Glenn L McGrath | 2e772ed | 2001-10-05 02:58:48 +0000 | [diff] [blame] | 122 | }; |
| 123 | typedef enum TarFileType TarFileType; |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 124 | |
Eric Andersen | 3d957c8 | 2000-12-07 00:34:58 +0000 | [diff] [blame] | 125 | /* Might be faster (and bigger) if the dev/ino were stored in numeric order;) */ |
Denis Vlasenko | 7e0fbf9 | 2007-09-04 19:33:22 +0000 | [diff] [blame] | 126 | static void addHardLinkInfo(HardLinkInfo **hlInfoHeadPtr, |
Glenn L McGrath | f66de64 | 2002-11-25 23:57:27 +0000 | [diff] [blame] | 127 | struct stat *statbuf, |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 128 | const char *fileName) |
Eric Andersen | 3d957c8 | 2000-12-07 00:34:58 +0000 | [diff] [blame] | 129 | { |
| 130 | /* Note: hlInfoHeadPtr can never be NULL! */ |
| 131 | HardLinkInfo *hlInfo; |
| 132 | |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 133 | hlInfo = xmalloc(sizeof(HardLinkInfo) + strlen(fileName)); |
Glenn L McGrath | f66de64 | 2002-11-25 23:57:27 +0000 | [diff] [blame] | 134 | hlInfo->next = *hlInfoHeadPtr; |
| 135 | *hlInfoHeadPtr = hlInfo; |
| 136 | hlInfo->dev = statbuf->st_dev; |
| 137 | hlInfo->ino = statbuf->st_ino; |
| 138 | hlInfo->linkCount = statbuf->st_nlink; |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 139 | strcpy(hlInfo->name, fileName); |
Eric Andersen | 3d957c8 | 2000-12-07 00:34:58 +0000 | [diff] [blame] | 140 | } |
| 141 | |
Denis Vlasenko | 7e0fbf9 | 2007-09-04 19:33:22 +0000 | [diff] [blame] | 142 | static void freeHardLinkInfo(HardLinkInfo **hlInfoHeadPtr) |
Eric Andersen | 3d957c8 | 2000-12-07 00:34:58 +0000 | [diff] [blame] | 143 | { |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 144 | HardLinkInfo *hlInfo; |
| 145 | HardLinkInfo *hlInfoNext; |
Eric Andersen | 3d957c8 | 2000-12-07 00:34:58 +0000 | [diff] [blame] | 146 | |
| 147 | if (hlInfoHeadPtr) { |
| 148 | hlInfo = *hlInfoHeadPtr; |
| 149 | while (hlInfo) { |
| 150 | hlInfoNext = hlInfo->next; |
| 151 | free(hlInfo); |
| 152 | hlInfo = hlInfoNext; |
| 153 | } |
| 154 | *hlInfoHeadPtr = NULL; |
| 155 | } |
Eric Andersen | 3d957c8 | 2000-12-07 00:34:58 +0000 | [diff] [blame] | 156 | } |
| 157 | |
| 158 | /* Might be faster (and bigger) if the dev/ino were stored in numeric order;) */ |
Denis Vlasenko | 7e0fbf9 | 2007-09-04 19:33:22 +0000 | [diff] [blame] | 159 | static HardLinkInfo *findHardLinkInfo(HardLinkInfo *hlInfo, struct stat *statbuf) |
Eric Andersen | 3d957c8 | 2000-12-07 00:34:58 +0000 | [diff] [blame] | 160 | { |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 161 | while (hlInfo) { |
Glenn L McGrath | f66de64 | 2002-11-25 23:57:27 +0000 | [diff] [blame] | 162 | if ((statbuf->st_ino == hlInfo->ino) && (statbuf->st_dev == hlInfo->dev)) |
Eric Andersen | 3d957c8 | 2000-12-07 00:34:58 +0000 | [diff] [blame] | 163 | break; |
| 164 | hlInfo = hlInfo->next; |
| 165 | } |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 166 | return hlInfo; |
Eric Andersen | 3d957c8 | 2000-12-07 00:34:58 +0000 | [diff] [blame] | 167 | } |
| 168 | |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 169 | /* Put an octal string into the specified buffer. |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 170 | * The number is zero padded and possibly null terminated. |
Denis Vlasenko | 87cd4a8 | 2006-11-25 23:47:32 +0000 | [diff] [blame] | 171 | * Stores low-order bits only if whole value does not fit. */ |
| 172 | static void putOctal(char *cp, int len, off_t value) |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 173 | { |
Denis Vlasenko | f2408e6 | 2006-11-25 14:48:09 +0000 | [diff] [blame] | 174 | char tempBuffer[sizeof(off_t)*3+1]; |
Erik Andersen | 5661fe0 | 2000-04-05 01:00:52 +0000 | [diff] [blame] | 175 | char *tempString = tempBuffer; |
Denis Vlasenko | f2408e6 | 2006-11-25 14:48:09 +0000 | [diff] [blame] | 176 | int width; |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 177 | |
Denis Vlasenko | f2408e6 | 2006-11-25 14:48:09 +0000 | [diff] [blame] | 178 | width = sprintf(tempBuffer, "%0*"OFF_FMT"o", len, value); |
| 179 | tempString += (width - len); |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 180 | |
Denis Vlasenko | f2408e6 | 2006-11-25 14:48:09 +0000 | [diff] [blame] | 181 | /* If string has leading zeroes, we can drop one */ |
| 182 | /* and field will have trailing '\0' */ |
| 183 | /* (increases chances of compat with other tars) */ |
| 184 | if (tempString[0] == '0') |
| 185 | tempString++; |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 186 | |
Denis Vlasenko | f2408e6 | 2006-11-25 14:48:09 +0000 | [diff] [blame] | 187 | /* Copy the string to the field */ |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 188 | memcpy(cp, tempString, len); |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 189 | } |
Denis Vlasenko | 7725d0f | 2006-11-25 23:56:50 +0000 | [diff] [blame] | 190 | #define PUT_OCTAL(a, b) putOctal((a), sizeof(a), (b)) |
| 191 | |
| 192 | static void chksum_and_xwrite(int fd, struct TarHeader* hp) |
| 193 | { |
Denis Vlasenko | dcbd51d | 2007-03-03 20:06:59 +0000 | [diff] [blame] | 194 | /* POSIX says that checksum is done on unsigned bytes |
Denis Vlasenko | 940494f | 2007-03-04 18:09:50 +0000 | [diff] [blame] | 195 | * (Sun and HP-UX gets it wrong... more details in |
Denis Vlasenko | dcbd51d | 2007-03-03 20:06:59 +0000 | [diff] [blame] | 196 | * GNU tar source) */ |
Denis Vlasenko | 7725d0f | 2006-11-25 23:56:50 +0000 | [diff] [blame] | 197 | const unsigned char *cp; |
| 198 | int chksum, size; |
| 199 | |
| 200 | strcpy(hp->magic, "ustar "); |
| 201 | |
| 202 | /* Calculate and store the checksum (i.e., the sum of all of the bytes of |
| 203 | * the header). The checksum field must be filled with blanks for the |
| 204 | * calculation. The checksum field is formatted differently from the |
| 205 | * other fields: it has 6 digits, a null, then a space -- rather than |
| 206 | * digits, followed by a null like the other fields... */ |
| 207 | memset(hp->chksum, ' ', sizeof(hp->chksum)); |
| 208 | cp = (const unsigned char *) hp; |
| 209 | chksum = 0; |
| 210 | size = sizeof(*hp); |
| 211 | do { chksum += *cp++; } while (--size); |
| 212 | putOctal(hp->chksum, sizeof(hp->chksum)-1, chksum); |
| 213 | |
| 214 | /* Now write the header out to disk */ |
| 215 | xwrite(fd, hp, sizeof(*hp)); |
| 216 | } |
| 217 | |
| 218 | #if ENABLE_FEATURE_TAR_GNU_EXTENSIONS |
| 219 | static void writeLongname(int fd, int type, const char *name, int dir) |
| 220 | { |
| 221 | static const struct { |
| 222 | char mode[8]; /* 100-107 */ |
| 223 | char uid[8]; /* 108-115 */ |
| 224 | char gid[8]; /* 116-123 */ |
| 225 | char size[12]; /* 124-135 */ |
| 226 | char mtime[12]; /* 136-147 */ |
| 227 | } prefilled = { |
| 228 | "0000000", |
| 229 | "0000000", |
| 230 | "0000000", |
| 231 | "00000000000", |
| 232 | "00000000000", |
| 233 | }; |
| 234 | struct TarHeader header; |
| 235 | int size; |
| 236 | |
| 237 | dir = !!dir; /* normalize: 0/1 */ |
| 238 | size = strlen(name) + 1 + dir; /* GNU tar uses strlen+1 */ |
| 239 | /* + dir: account for possible '/' */ |
| 240 | |
Bernhard Reutner-Fischer | 6f0540e | 2006-12-12 11:50:44 +0000 | [diff] [blame] | 241 | memset(&header, 0, sizeof(header)); |
Denis Vlasenko | 7725d0f | 2006-11-25 23:56:50 +0000 | [diff] [blame] | 242 | strcpy(header.name, "././@LongLink"); |
| 243 | memcpy(header.mode, prefilled.mode, sizeof(prefilled)); |
| 244 | PUT_OCTAL(header.size, size); |
| 245 | header.typeflag = type; |
| 246 | chksum_and_xwrite(fd, &header); |
| 247 | |
| 248 | /* Write filename[/] and pad the block. */ |
| 249 | /* dir=0: writes 'name<NUL>', pads */ |
| 250 | /* dir=1: writes 'name', writes '/<NUL>', pads */ |
| 251 | dir *= 2; |
| 252 | xwrite(fd, name, size - dir); |
| 253 | xwrite(fd, "/", dir); |
| 254 | size = (-size) & (TAR_BLOCK_SIZE-1); |
Bernhard Reutner-Fischer | 6f0540e | 2006-12-12 11:50:44 +0000 | [diff] [blame] | 255 | memset(&header, 0, size); |
Denis Vlasenko | 7725d0f | 2006-11-25 23:56:50 +0000 | [diff] [blame] | 256 | xwrite(fd, &header, size); |
| 257 | } |
| 258 | #endif |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 259 | |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 260 | /* Write out a tar header for the specified file/directory/whatever */ |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 261 | void BUG_tar_header_size(void); |
Rob Landley | 88621d7 | 2006-08-29 19:41:06 +0000 | [diff] [blame] | 262 | static int writeTarHeader(struct TarBallInfo *tbInfo, |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 263 | const char *header_name, const char *fileName, struct stat *statbuf) |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 264 | { |
Erik Andersen | 5661fe0 | 2000-04-05 01:00:52 +0000 | [diff] [blame] | 265 | struct TarHeader header; |
Erik Andersen | 3364d78 | 2000-03-28 00:58:14 +0000 | [diff] [blame] | 266 | |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 267 | if (sizeof(header) != 512) |
| 268 | BUG_tar_header_size(); |
| 269 | |
Bernhard Reutner-Fischer | 6f0540e | 2006-12-12 11:50:44 +0000 | [diff] [blame] | 270 | memset(&header, 0, sizeof(struct TarHeader)); |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 271 | |
Denis Vlasenko | 7725d0f | 2006-11-25 23:56:50 +0000 | [diff] [blame] | 272 | strncpy(header.name, header_name, sizeof(header.name)); |
Erik Andersen | ecd5124 | 2000-04-08 03:08:21 +0000 | [diff] [blame] | 273 | |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 274 | /* POSIX says to mask mode with 07777. */ |
Denis Vlasenko | f2408e6 | 2006-11-25 14:48:09 +0000 | [diff] [blame] | 275 | PUT_OCTAL(header.mode, statbuf->st_mode & 07777); |
| 276 | PUT_OCTAL(header.uid, statbuf->st_uid); |
| 277 | PUT_OCTAL(header.gid, statbuf->st_gid); |
Denis Vlasenko | b8a8e60 | 2006-11-24 14:59:45 +0000 | [diff] [blame] | 278 | memset(header.size, '0', sizeof(header.size)-1); /* Regular file size is handled later */ |
Denis Vlasenko | f2408e6 | 2006-11-25 14:48:09 +0000 | [diff] [blame] | 279 | PUT_OCTAL(header.mtime, statbuf->st_mtime); |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 280 | |
Denis Vlasenko | c50f370 | 2006-11-24 14:57:31 +0000 | [diff] [blame] | 281 | /* Enter the user and group names */ |
| 282 | safe_strncpy(header.uname, get_cached_username(statbuf->st_uid), sizeof(header.uname)); |
| 283 | safe_strncpy(header.gname, get_cached_groupname(statbuf->st_gid), sizeof(header.gname)); |
Erik Andersen | 5661fe0 | 2000-04-05 01:00:52 +0000 | [diff] [blame] | 284 | |
Eric Andersen | 3d957c8 | 2000-12-07 00:34:58 +0000 | [diff] [blame] | 285 | if (tbInfo->hlInfo) { |
| 286 | /* This is a hard link */ |
| 287 | header.typeflag = LNKTYPE; |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 288 | strncpy(header.linkname, tbInfo->hlInfo->name, |
| 289 | sizeof(header.linkname)); |
Denis Vlasenko | 7725d0f | 2006-11-25 23:56:50 +0000 | [diff] [blame] | 290 | #if ENABLE_FEATURE_TAR_GNU_EXTENSIONS |
| 291 | /* Write out long linkname if needed */ |
| 292 | if (header.linkname[sizeof(header.linkname)-1]) |
| 293 | writeLongname(tbInfo->tarFd, GNULONGLINK, |
| 294 | tbInfo->hlInfo->name, 0); |
| 295 | #endif |
Eric Andersen | 3d957c8 | 2000-12-07 00:34:58 +0000 | [diff] [blame] | 296 | } else if (S_ISLNK(statbuf->st_mode)) { |
Denis Vlasenko | 6ca0444 | 2007-02-11 16:19:28 +0000 | [diff] [blame] | 297 | char *lpath = xmalloc_readlink_or_warn(fileName); |
| 298 | if (!lpath) |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 299 | return FALSE; |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 300 | header.typeflag = SYMTYPE; |
| 301 | strncpy(header.linkname, lpath, sizeof(header.linkname)); |
Denis Vlasenko | 7725d0f | 2006-11-25 23:56:50 +0000 | [diff] [blame] | 302 | #if ENABLE_FEATURE_TAR_GNU_EXTENSIONS |
| 303 | /* Write out long linkname if needed */ |
| 304 | if (header.linkname[sizeof(header.linkname)-1]) |
| 305 | writeLongname(tbInfo->tarFd, GNULONGLINK, lpath, 0); |
| 306 | #else |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 307 | /* If it is larger than 100 bytes, bail out */ |
Denis Vlasenko | 7725d0f | 2006-11-25 23:56:50 +0000 | [diff] [blame] | 308 | if (header.linkname[sizeof(header.linkname)-1]) { |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 309 | free(lpath); |
| 310 | bb_error_msg("names longer than "NAME_SIZE_STR" chars not supported"); |
| 311 | return FALSE; |
| 312 | } |
Denis Vlasenko | 7725d0f | 2006-11-25 23:56:50 +0000 | [diff] [blame] | 313 | #endif |
Mark Whitley | 8a63326 | 2001-04-30 18:17:00 +0000 | [diff] [blame] | 314 | free(lpath); |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 315 | } else if (S_ISDIR(statbuf->st_mode)) { |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 316 | header.typeflag = DIRTYPE; |
Denis Vlasenko | 7725d0f | 2006-11-25 23:56:50 +0000 | [diff] [blame] | 317 | /* Append '/' only if there is a space for it */ |
| 318 | if (!header.name[sizeof(header.name)-1]) |
| 319 | header.name[strlen(header.name)] = '/'; |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 320 | } else if (S_ISCHR(statbuf->st_mode)) { |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 321 | header.typeflag = CHRTYPE; |
Denis Vlasenko | f2408e6 | 2006-11-25 14:48:09 +0000 | [diff] [blame] | 322 | PUT_OCTAL(header.devmajor, major(statbuf->st_rdev)); |
| 323 | PUT_OCTAL(header.devminor, minor(statbuf->st_rdev)); |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 324 | } else if (S_ISBLK(statbuf->st_mode)) { |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 325 | header.typeflag = BLKTYPE; |
Denis Vlasenko | f2408e6 | 2006-11-25 14:48:09 +0000 | [diff] [blame] | 326 | PUT_OCTAL(header.devmajor, major(statbuf->st_rdev)); |
| 327 | PUT_OCTAL(header.devminor, minor(statbuf->st_rdev)); |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 328 | } else if (S_ISFIFO(statbuf->st_mode)) { |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 329 | header.typeflag = FIFOTYPE; |
Erik Andersen | 5661fe0 | 2000-04-05 01:00:52 +0000 | [diff] [blame] | 330 | } else if (S_ISREG(statbuf->st_mode)) { |
Denis Vlasenko | 87cd4a8 | 2006-11-25 23:47:32 +0000 | [diff] [blame] | 331 | if (sizeof(statbuf->st_size) > 4 |
| 332 | && statbuf->st_size > (off_t)0777777777777LL |
Denis Vlasenko | f2408e6 | 2006-11-25 14:48:09 +0000 | [diff] [blame] | 333 | ) { |
| 334 | bb_error_msg_and_die("cannot store file '%s' " |
| 335 | "of size %"OFF_FMT"d, aborting", |
| 336 | fileName, statbuf->st_size); |
| 337 | } |
Denis Vlasenko | 87cd4a8 | 2006-11-25 23:47:32 +0000 | [diff] [blame] | 338 | header.typeflag = REGTYPE; |
| 339 | PUT_OCTAL(header.size, statbuf->st_size); |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 340 | } else { |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 341 | bb_error_msg("%s: unknown file type", fileName); |
| 342 | return FALSE; |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 343 | } |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 344 | |
Denis Vlasenko | 7725d0f | 2006-11-25 23:56:50 +0000 | [diff] [blame] | 345 | #if ENABLE_FEATURE_TAR_GNU_EXTENSIONS |
| 346 | /* Write out long name if needed */ |
| 347 | /* (we, like GNU tar, output long linkname *before* long name) */ |
| 348 | if (header.name[sizeof(header.name)-1]) |
| 349 | writeLongname(tbInfo->tarFd, GNULONGNAME, |
| 350 | header_name, S_ISDIR(statbuf->st_mode)); |
| 351 | #endif |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 352 | |
Erik Andersen | 5661fe0 | 2000-04-05 01:00:52 +0000 | [diff] [blame] | 353 | /* Now write the header out to disk */ |
Denis Vlasenko | 7725d0f | 2006-11-25 23:56:50 +0000 | [diff] [blame] | 354 | chksum_and_xwrite(tbInfo->tarFd, &header); |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 355 | |
Erik Andersen | 5661fe0 | 2000-04-05 01:00:52 +0000 | [diff] [blame] | 356 | /* Now do the verbose thing (or not) */ |
Robert Griebl | f2f26e7 | 2002-07-23 22:05:47 +0000 | [diff] [blame] | 357 | if (tbInfo->verboseFlag) { |
Eric Andersen | fdd5103 | 2000-08-02 18:48:26 +0000 | [diff] [blame] | 358 | FILE *vbFd = stdout; |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 359 | |
Denis Vlasenko | ab6b446 | 2008-12-12 02:14:35 +0000 | [diff] [blame] | 360 | /* If archive goes to stdout, verbose goes to stderr */ |
| 361 | if (tbInfo->tarFd == STDOUT_FILENO) |
Eric Andersen | fdd5103 | 2000-08-02 18:48:26 +0000 | [diff] [blame] | 362 | vbFd = stderr; |
Denis Vlasenko | 3feb2fc | 2006-11-24 21:55:55 +0000 | [diff] [blame] | 363 | /* GNU "tar cvvf" prints "extended" listing a-la "ls -l" */ |
| 364 | /* We don't have such excesses here: for us "v" == "vv" */ |
Denis Vlasenko | 7725d0f | 2006-11-25 23:56:50 +0000 | [diff] [blame] | 365 | /* '/' is probably a GNUism */ |
| 366 | fprintf(vbFd, "%s%s\n", header_name, |
| 367 | S_ISDIR(statbuf->st_mode) ? "/" : ""); |
Eric Andersen | fdd5103 | 2000-08-02 18:48:26 +0000 | [diff] [blame] | 368 | } |
Erik Andersen | 3364d78 | 2000-03-28 00:58:14 +0000 | [diff] [blame] | 369 | |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 370 | return TRUE; |
Erik Andersen | 3364d78 | 2000-03-28 00:58:14 +0000 | [diff] [blame] | 371 | } |
| 372 | |
Denis Vlasenko | 218f2f4 | 2007-01-24 22:02:01 +0000 | [diff] [blame] | 373 | #if ENABLE_FEATURE_TAR_FROM |
Rob Landley | 88621d7 | 2006-08-29 19:41:06 +0000 | [diff] [blame] | 374 | static int exclude_file(const llist_t *excluded_files, const char *file) |
Glenn L McGrath | 2e772ed | 2001-10-05 02:58:48 +0000 | [diff] [blame] | 375 | { |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 376 | while (excluded_files) { |
| 377 | if (excluded_files->data[0] == '/') { |
| 378 | if (fnmatch(excluded_files->data, file, |
Glenn L McGrath | 2e772ed | 2001-10-05 02:58:48 +0000 | [diff] [blame] | 379 | FNM_PATHNAME | FNM_LEADING_DIR) == 0) |
| 380 | return 1; |
| 381 | } else { |
| 382 | const char *p; |
| 383 | |
| 384 | for (p = file; p[0] != '\0'; p++) { |
| 385 | if ((p == file || p[-1] == '/') && p[0] != '/' && |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 386 | fnmatch(excluded_files->data, p, |
Glenn L McGrath | 2e772ed | 2001-10-05 02:58:48 +0000 | [diff] [blame] | 387 | FNM_PATHNAME | FNM_LEADING_DIR) == 0) |
| 388 | return 1; |
| 389 | } |
| 390 | } |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 391 | excluded_files = excluded_files->link; |
Glenn L McGrath | 2e772ed | 2001-10-05 02:58:48 +0000 | [diff] [blame] | 392 | } |
| 393 | |
| 394 | return 0; |
| 395 | } |
Denis Vlasenko | 218f2f4 | 2007-01-24 22:02:01 +0000 | [diff] [blame] | 396 | #else |
"Vladimir N. Oleynik" | a62b0e7 | 2005-12-06 12:20:57 +0000 | [diff] [blame] | 397 | #define exclude_file(excluded_files, file) 0 |
Denis Vlasenko | 218f2f4 | 2007-01-24 22:02:01 +0000 | [diff] [blame] | 398 | #endif |
Erik Andersen | 3364d78 | 2000-03-28 00:58:14 +0000 | [diff] [blame] | 399 | |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 400 | static int FAST_FUNC writeFileToTarball(const char *fileName, struct stat *statbuf, |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 401 | void *userData, int depth UNUSED_PARAM) |
Erik Andersen | 3364d78 | 2000-03-28 00:58:14 +0000 | [diff] [blame] | 402 | { |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 403 | struct TarBallInfo *tbInfo = (struct TarBallInfo *) userData; |
Matt Kraai | e80a263 | 2000-12-19 20:45:49 +0000 | [diff] [blame] | 404 | const char *header_name; |
Rob Landley | e569553 | 2006-01-09 03:07:44 +0000 | [diff] [blame] | 405 | int inputFileFd = -1; |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 406 | |
Denis Vlasenko | e9b3321 | 2007-09-24 19:32:53 +0000 | [diff] [blame] | 407 | /* Strip leading '/' (must be before memorizing hardlink's name) */ |
Matt Kraai | e80a263 | 2000-12-19 20:45:49 +0000 | [diff] [blame] | 408 | header_name = fileName; |
| 409 | while (header_name[0] == '/') { |
Denis Vlasenko | 931de89 | 2007-06-21 12:43:45 +0000 | [diff] [blame] | 410 | static smallint warned; |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 411 | |
Denis Vlasenko | 931de89 | 2007-06-21 12:43:45 +0000 | [diff] [blame] | 412 | if (!warned) { |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 413 | bb_error_msg("removing leading '/' from member names"); |
Denis Vlasenko | 931de89 | 2007-06-21 12:43:45 +0000 | [diff] [blame] | 414 | warned = 1; |
Matt Kraai | a1f9775 | 2000-12-19 06:24:08 +0000 | [diff] [blame] | 415 | } |
Matt Kraai | e80a263 | 2000-12-19 20:45:49 +0000 | [diff] [blame] | 416 | header_name++; |
Matt Kraai | a1f9775 | 2000-12-19 06:24:08 +0000 | [diff] [blame] | 417 | } |
| 418 | |
Denis Vlasenko | 86e0a22 | 2007-09-24 19:07:57 +0000 | [diff] [blame] | 419 | if (header_name[0] == '\0') |
| 420 | return TRUE; |
| 421 | |
Denis Vlasenko | e9b3321 | 2007-09-24 19:32:53 +0000 | [diff] [blame] | 422 | /* It is against the rules to archive a socket */ |
| 423 | if (S_ISSOCK(statbuf->st_mode)) { |
| 424 | bb_error_msg("%s: socket ignored", fileName); |
| 425 | return TRUE; |
| 426 | } |
| 427 | |
Denis Vlasenko | 86e0a22 | 2007-09-24 19:07:57 +0000 | [diff] [blame] | 428 | /* |
| 429 | * Check to see if we are dealing with a hard link. |
| 430 | * If so - |
| 431 | * Treat the first occurance of a given dev/inode as a file while |
| 432 | * treating any additional occurances as hard links. This is done |
| 433 | * by adding the file information to the HardLinkInfo linked list. |
| 434 | */ |
| 435 | tbInfo->hlInfo = NULL; |
| 436 | if (statbuf->st_nlink > 1) { |
| 437 | tbInfo->hlInfo = findHardLinkInfo(tbInfo->hlInfoHead, statbuf); |
| 438 | if (tbInfo->hlInfo == NULL) |
| 439 | addHardLinkInfo(&tbInfo->hlInfoHead, statbuf, header_name); |
| 440 | } |
| 441 | |
Denis Vlasenko | 86e0a22 | 2007-09-24 19:07:57 +0000 | [diff] [blame] | 442 | /* It is a bad idea to store the archive we are in the process of creating, |
| 443 | * so check the device and inode to be sure that this particular file isn't |
| 444 | * the new tarball */ |
| 445 | if (tbInfo->statBuf.st_dev == statbuf->st_dev |
| 446 | && tbInfo->statBuf.st_ino == statbuf->st_ino |
| 447 | ) { |
| 448 | bb_error_msg("%s: file is the archive; skipping", fileName); |
| 449 | return TRUE; |
| 450 | } |
| 451 | |
| 452 | if (exclude_file(tbInfo->excludeList, header_name)) |
| 453 | return SKIP; |
| 454 | |
Denis Vlasenko | 7725d0f | 2006-11-25 23:56:50 +0000 | [diff] [blame] | 455 | #if !ENABLE_FEATURE_TAR_GNU_EXTENSIONS |
Denis Vlasenko | 86e0a22 | 2007-09-24 19:07:57 +0000 | [diff] [blame] | 456 | if (strlen(header_name) >= NAME_SIZE) { |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 457 | bb_error_msg("names longer than "NAME_SIZE_STR" chars not supported"); |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 458 | return TRUE; |
Eric Andersen | 1b1cfde | 2000-09-24 00:54:37 +0000 | [diff] [blame] | 459 | } |
Denis Vlasenko | 7725d0f | 2006-11-25 23:56:50 +0000 | [diff] [blame] | 460 | #endif |
Eric Andersen | 1b1cfde | 2000-09-24 00:54:37 +0000 | [diff] [blame] | 461 | |
Rob Landley | e569553 | 2006-01-09 03:07:44 +0000 | [diff] [blame] | 462 | /* Is this a regular file? */ |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 463 | if (tbInfo->hlInfo == NULL && S_ISREG(statbuf->st_mode)) { |
Erik Andersen | 5661fe0 | 2000-04-05 01:00:52 +0000 | [diff] [blame] | 464 | /* open the file we want to archive, and make sure all is well */ |
Denis Vlasenko | 50f7f44 | 2007-04-11 23:20:53 +0000 | [diff] [blame] | 465 | inputFileFd = open_or_warn(fileName, O_RDONLY); |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 466 | if (inputFileFd < 0) { |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 467 | return FALSE; |
Erik Andersen | 5661fe0 | 2000-04-05 01:00:52 +0000 | [diff] [blame] | 468 | } |
Rob Landley | e569553 | 2006-01-09 03:07:44 +0000 | [diff] [blame] | 469 | } |
| 470 | |
| 471 | /* Add an entry to the tarball */ |
| 472 | if (writeTarHeader(tbInfo, header_name, fileName, statbuf) == FALSE) { |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 473 | return FALSE; |
Rob Landley | e569553 | 2006-01-09 03:07:44 +0000 | [diff] [blame] | 474 | } |
| 475 | |
| 476 | /* If it was a regular file, write out the body */ |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 477 | if (inputFileFd >= 0) { |
Denis Vlasenko | 714701c | 2006-12-22 00:21:07 +0000 | [diff] [blame] | 478 | size_t readSize; |
Denis Vlasenko | 50f7f44 | 2007-04-11 23:20:53 +0000 | [diff] [blame] | 479 | /* Write the file to the archive. */ |
Denis Vlasenko | 714701c | 2006-12-22 00:21:07 +0000 | [diff] [blame] | 480 | /* We record size into header first, */ |
| 481 | /* and then write out file. If file shrinks in between, */ |
| 482 | /* tar will be corrupted. So we don't allow for that. */ |
| 483 | /* NB: GNU tar 1.16 warns and pads with zeroes */ |
| 484 | /* or even seeks back and updates header */ |
| 485 | bb_copyfd_exact_size(inputFileFd, tbInfo->tarFd, statbuf->st_size); |
| 486 | ////off_t readSize; |
| 487 | ////readSize = bb_copyfd_size(inputFileFd, tbInfo->tarFd, statbuf->st_size); |
| 488 | ////if (readSize != statbuf->st_size && readSize >= 0) { |
| 489 | //// bb_error_msg_and_die("short read from %s, aborting", fileName); |
| 490 | ////} |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 491 | |
Denis Vlasenko | 4fbb584 | 2006-11-24 14:55:23 +0000 | [diff] [blame] | 492 | /* Check that file did not grow in between? */ |
Denis Vlasenko | 714701c | 2006-12-22 00:21:07 +0000 | [diff] [blame] | 493 | /* if (safe_read(inputFileFd, 1) == 1) warn but continue? */ |
| 494 | |
Rob Landley | e569553 | 2006-01-09 03:07:44 +0000 | [diff] [blame] | 495 | close(inputFileFd); |
Glenn L McGrath | 7ffe133 | 2003-11-21 22:24:57 +0000 | [diff] [blame] | 496 | |
Erik Andersen | 5661fe0 | 2000-04-05 01:00:52 +0000 | [diff] [blame] | 497 | /* Pad the file up to the tar block size */ |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 498 | /* (a few tricks here in the name of code size) */ |
Denis Vlasenko | 714701c | 2006-12-22 00:21:07 +0000 | [diff] [blame] | 499 | readSize = (-(int)statbuf->st_size) & (TAR_BLOCK_SIZE-1); |
Denis Vlasenko | 74324c8 | 2007-06-04 10:16:52 +0000 | [diff] [blame] | 500 | memset(block_buf, 0, readSize); |
| 501 | xwrite(tbInfo->tarFd, block_buf, readSize); |
Erik Andersen | 5661fe0 | 2000-04-05 01:00:52 +0000 | [diff] [blame] | 502 | } |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 503 | |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 504 | return TRUE; |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 505 | } |
| 506 | |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 507 | #if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2 |
| 508 | #if !(ENABLE_FEATURE_SEAMLESS_GZ && ENABLE_FEATURE_SEAMLESS_BZ2) |
Denis Vlasenko | 7a762f9 | 2008-06-14 19:38:35 +0000 | [diff] [blame] | 509 | #define vfork_compressor(tar_fd, gzip) vfork_compressor(tar_fd) |
| 510 | #endif |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 511 | /* Don't inline: vfork scares gcc and pessimizes code */ |
| 512 | static void NOINLINE vfork_compressor(int tar_fd, int gzip) |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 513 | { |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 514 | pid_t gzipPid; |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 515 | #if ENABLE_FEATURE_SEAMLESS_GZ && ENABLE_FEATURE_SEAMLESS_BZ2 |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 516 | const char *zip_exec = (gzip == 1) ? "gzip" : "bzip2"; |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 517 | #elif ENABLE_FEATURE_SEAMLESS_GZ |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 518 | const char *zip_exec = "gzip"; |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 519 | #else /* only ENABLE_FEATURE_SEAMLESS_BZ2 */ |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 520 | const char *zip_exec = "bzip2"; |
| 521 | #endif |
| 522 | // On Linux, vfork never unpauses parent early, although standard |
| 523 | // allows for that. Do we want to waste bytes checking for it? |
| 524 | #define WAIT_FOR_CHILD 0 |
| 525 | volatile int vfork_exec_errno = 0; |
| 526 | struct fd_pair gzipDataPipe; |
| 527 | #if WAIT_FOR_CHILD |
| 528 | struct fd_pair gzipStatusPipe; |
| 529 | xpiped_pair(gzipStatusPipe); |
| 530 | #endif |
| 531 | xpiped_pair(gzipDataPipe); |
| 532 | |
| 533 | signal(SIGPIPE, SIG_IGN); /* we only want EPIPE on errors */ |
| 534 | |
| 535 | #if defined(__GNUC__) && __GNUC__ |
| 536 | /* Avoid vfork clobbering */ |
| 537 | (void) &zip_exec; |
| 538 | #endif |
| 539 | |
Denis Vlasenko | 82604e9 | 2008-07-01 15:59:42 +0000 | [diff] [blame] | 540 | gzipPid = vfork(); |
| 541 | if (gzipPid < 0) |
Denis Vlasenko | fa0b56d | 2008-07-01 16:09:07 +0000 | [diff] [blame] | 542 | bb_perror_msg_and_die("vfork"); |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 543 | |
| 544 | if (gzipPid == 0) { |
| 545 | /* child */ |
| 546 | /* NB: close _first_, then move fds! */ |
| 547 | close(gzipDataPipe.wr); |
| 548 | #if WAIT_FOR_CHILD |
| 549 | close(gzipStatusPipe.rd); |
| 550 | /* gzipStatusPipe.wr will close only on exec - |
| 551 | * parent waits for this close to happen */ |
| 552 | fcntl(gzipStatusPipe.wr, F_SETFD, FD_CLOEXEC); |
| 553 | #endif |
| 554 | xmove_fd(gzipDataPipe.rd, 0); |
| 555 | xmove_fd(tar_fd, 1); |
| 556 | /* exec gzip/bzip2 program/applet */ |
| 557 | BB_EXECLP(zip_exec, zip_exec, "-f", NULL); |
| 558 | vfork_exec_errno = errno; |
Bernhard Reutner-Fischer | 636a1f8 | 2008-05-19 09:29:47 +0000 | [diff] [blame] | 559 | _exit(EXIT_FAILURE); |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 560 | } |
| 561 | |
| 562 | /* parent */ |
| 563 | xmove_fd(gzipDataPipe.wr, tar_fd); |
| 564 | close(gzipDataPipe.rd); |
| 565 | #if WAIT_FOR_CHILD |
| 566 | close(gzipStatusPipe.wr); |
| 567 | while (1) { |
| 568 | char buf; |
| 569 | int n; |
| 570 | |
| 571 | /* Wait until child execs (or fails to) */ |
| 572 | n = full_read(gzipStatusPipe.rd, &buf, 1); |
| 573 | if (n < 0 /* && errno == EAGAIN */) |
| 574 | continue; /* try it again */ |
| 575 | } |
| 576 | close(gzipStatusPipe.rd); |
| 577 | #endif |
| 578 | if (vfork_exec_errno) { |
| 579 | errno = vfork_exec_errno; |
Denis Vlasenko | f9d4fc3 | 2009-04-21 20:40:51 +0000 | [diff] [blame] | 580 | bb_perror_msg_and_die("can't execute '%s'", zip_exec); |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 581 | } |
| 582 | } |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 583 | #endif /* ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2 */ |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 584 | |
| 585 | |
| 586 | /* gcc 4.2.1 inlines it, making code bigger */ |
| 587 | static NOINLINE int writeTarFile(int tar_fd, int verboseFlag, |
| 588 | int dereferenceFlag, const llist_t *include, |
| 589 | const llist_t *exclude, int gzip) |
| 590 | { |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 591 | int errorFlag = FALSE; |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 592 | struct TarBallInfo tbInfo; |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 593 | |
Eric Andersen | 3d957c8 | 2000-12-07 00:34:58 +0000 | [diff] [blame] | 594 | tbInfo.hlInfoHead = NULL; |
Glenn L McGrath | 91b3d46 | 2003-10-02 14:33:23 +0000 | [diff] [blame] | 595 | tbInfo.tarFd = tar_fd; |
| 596 | tbInfo.verboseFlag = verboseFlag; |
Robert Griebl | f2f26e7 | 2002-07-23 22:05:47 +0000 | [diff] [blame] | 597 | |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 598 | /* Store the stat info for the tarball's file, so |
| 599 | * can avoid including the tarball into itself.... */ |
| 600 | if (fstat(tbInfo.tarFd, &tbInfo.statBuf) < 0) |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 601 | bb_perror_msg_and_die("cannot stat tar file"); |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 602 | |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 603 | #if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2 |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 604 | if (gzip) |
| 605 | vfork_compressor(tbInfo.tarFd, gzip); |
Denis Vlasenko | 431a7c9 | 2008-02-19 11:26:28 +0000 | [diff] [blame] | 606 | #endif |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 607 | |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 608 | tbInfo.excludeList = exclude; |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 609 | |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 610 | /* Read the directory/files and iterate over them one at a time */ |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 611 | while (include) { |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 612 | if (!recursive_action(include->data, ACTION_RECURSE | |
| 613 | (dereferenceFlag ? ACTION_FOLLOWLINKS : 0), |
Bernhard Reutner-Fischer | 3e816c1 | 2007-03-29 10:30:50 +0000 | [diff] [blame] | 614 | writeFileToTarball, writeFileToTarball, &tbInfo, 0)) |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 615 | { |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 616 | errorFlag = TRUE; |
Erik Andersen | 3364d78 | 2000-03-28 00:58:14 +0000 | [diff] [blame] | 617 | } |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 618 | include = include->link; |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 619 | } |
Erik Andersen | 5661fe0 | 2000-04-05 01:00:52 +0000 | [diff] [blame] | 620 | /* Write two empty blocks to the end of the archive */ |
Denis Vlasenko | 74324c8 | 2007-06-04 10:16:52 +0000 | [diff] [blame] | 621 | memset(block_buf, 0, 2*TAR_BLOCK_SIZE); |
| 622 | xwrite(tbInfo.tarFd, block_buf, 2*TAR_BLOCK_SIZE); |
Erik Andersen | 0817d13 | 2000-04-09 15:17:40 +0000 | [diff] [blame] | 623 | |
| 624 | /* To be pedantically correct, we would check if the tarball |
Eric Andersen | 3c5ee9a | 2000-11-14 22:15:48 +0000 | [diff] [blame] | 625 | * is smaller than 20 tar blocks, and pad it if it was smaller, |
Erik Andersen | 0817d13 | 2000-04-09 15:17:40 +0000 | [diff] [blame] | 626 | * but that isn't necessary for GNU tar interoperability, and |
| 627 | * so is considered a waste of space */ |
| 628 | |
Rob Landley | 1a78103 | 2005-12-16 21:33:10 +0000 | [diff] [blame] | 629 | /* Close so the child process (if any) will exit */ |
| 630 | close(tbInfo.tarFd); |
| 631 | |
Erik Andersen | 68a9ea4 | 2000-04-04 18:39:50 +0000 | [diff] [blame] | 632 | /* Hang up the tools, close up shop, head home */ |
Rob Landley | 1a78103 | 2005-12-16 21:33:10 +0000 | [diff] [blame] | 633 | if (ENABLE_FEATURE_CLEAN_UP) |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 634 | freeHardLinkInfo(&tbInfo.hlInfoHead); |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 635 | |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 636 | if (errorFlag) |
Denis Vlasenko | e1a0d48 | 2006-10-20 13:28:22 +0000 | [diff] [blame] | 637 | bb_error_msg("error exit delayed from previous errors"); |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 638 | |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 639 | #if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2 |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 640 | if (gzip) { |
Denis Vlasenko | c888946 | 2006-12-17 19:08:20 +0000 | [diff] [blame] | 641 | int status; |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 642 | if (safe_waitpid(-1, &status, 0) == -1) |
Denis Vlasenko | c888946 | 2006-12-17 19:08:20 +0000 | [diff] [blame] | 643 | bb_perror_msg("waitpid"); |
| 644 | else if (!WIFEXITED(status) || WEXITSTATUS(status)) |
| 645 | /* gzip was killed or has exited with nonzero! */ |
| 646 | errorFlag = TRUE; |
| 647 | } |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 648 | #endif |
Denis Vlasenko | c888946 | 2006-12-17 19:08:20 +0000 | [diff] [blame] | 649 | return errorFlag; |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 650 | } |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 651 | #else |
Denis Vlasenko | 5a07a1d | 2008-04-21 21:56:07 +0000 | [diff] [blame] | 652 | int writeTarFile(int tar_fd, int verboseFlag, |
| 653 | int dereferenceFlag, const llist_t *include, |
| 654 | const llist_t *exclude, int gzip); |
Denis Vlasenko | 218f2f4 | 2007-01-24 22:02:01 +0000 | [diff] [blame] | 655 | #endif /* FEATURE_TAR_CREATE */ |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 656 | |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 657 | #if ENABLE_FEATURE_TAR_FROM |
Eric Andersen | 27cb684 | 2003-06-26 09:07:59 +0000 | [diff] [blame] | 658 | static llist_t *append_file_list_to_list(llist_t *list) |
Glenn L McGrath | d642a67 | 2001-10-13 06:54:45 +0000 | [diff] [blame] | 659 | { |
Eric Andersen | 27cb684 | 2003-06-26 09:07:59 +0000 | [diff] [blame] | 660 | FILE *src_stream; |
Glenn L McGrath | c5c1a8a | 2002-10-19 06:19:22 +0000 | [diff] [blame] | 661 | char *line; |
Eric Andersen | 27cb684 | 2003-06-26 09:07:59 +0000 | [diff] [blame] | 662 | llist_t *newlist = NULL; |
| 663 | |
Denis Vlasenko | d50dda8 | 2008-06-15 05:40:56 +0000 | [diff] [blame] | 664 | while (list) { |
Denis Vlasenko | 5415c85 | 2008-07-21 23:05:26 +0000 | [diff] [blame] | 665 | src_stream = xfopen_for_read(llist_pop(&list)); |
Denis Vlasenko | 8ee649a | 2008-03-26 20:04:27 +0000 | [diff] [blame] | 666 | while ((line = xmalloc_fgetline(src_stream)) != NULL) { |
Denis Vlasenko | 3feb2fc | 2006-11-24 21:55:55 +0000 | [diff] [blame] | 667 | /* kill trailing '/' unless the string is just "/" */ |
| 668 | char *cp = last_char_is(line, '/'); |
| 669 | if (cp > line) |
| 670 | *cp = '\0'; |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 671 | llist_add_to(&newlist, line); |
Denis Vlasenko | 314908d | 2006-09-03 14:04:33 +0000 | [diff] [blame] | 672 | } |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 673 | fclose(src_stream); |
Eric Andersen | 27cb684 | 2003-06-26 09:07:59 +0000 | [diff] [blame] | 674 | } |
| 675 | return newlist; |
Glenn L McGrath | 2e772ed | 2001-10-05 02:58:48 +0000 | [diff] [blame] | 676 | } |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 677 | #else |
Denis Vlasenko | 218f2f4 | 2007-01-24 22:02:01 +0000 | [diff] [blame] | 678 | #define append_file_list_to_list(x) 0 |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 679 | #endif |
Erik Andersen | 6acaa40 | 2000-03-26 14:03:20 +0000 | [diff] [blame] | 680 | |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 681 | #if ENABLE_FEATURE_SEAMLESS_Z |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 682 | static char FAST_FUNC get_header_tar_Z(archive_handle_t *archive_handle) |
Glenn L McGrath | 56f16b4 | 2003-11-18 21:37:52 +0000 | [diff] [blame] | 683 | { |
Denis Vlasenko | e1a0d48 | 2006-10-20 13:28:22 +0000 | [diff] [blame] | 684 | /* Can't lseek over pipes */ |
Denis Vlasenko | 1385899 | 2006-10-08 12:49:22 +0000 | [diff] [blame] | 685 | archive_handle->seek = seek_by_read; |
Eric Andersen | 27cb684 | 2003-06-26 09:07:59 +0000 | [diff] [blame] | 686 | |
Glenn L McGrath | 56f16b4 | 2003-11-18 21:37:52 +0000 | [diff] [blame] | 687 | /* do the decompression, and cleanup */ |
Denis Vlasenko | cf30cc8 | 2006-11-24 14:53:18 +0000 | [diff] [blame] | 688 | if (xread_char(archive_handle->src_fd) != 0x1f |
| 689 | || xread_char(archive_handle->src_fd) != 0x9d |
| 690 | ) { |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 691 | bb_error_msg_and_die("invalid magic"); |
Glenn L McGrath | 56f16b4 | 2003-11-18 21:37:52 +0000 | [diff] [blame] | 692 | } |
| 693 | |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 694 | open_transformer(archive_handle->src_fd, unpack_Z_stream, "uncompress"); |
Glenn L McGrath | 56f16b4 | 2003-11-18 21:37:52 +0000 | [diff] [blame] | 695 | archive_handle->offset = 0; |
Denis Vlasenko | 0c45bb23 | 2006-09-09 12:49:03 +0000 | [diff] [blame] | 696 | while (get_header_tar(archive_handle) == EXIT_SUCCESS) |
Denis Vlasenko | 476b070 | 2007-09-09 14:11:11 +0000 | [diff] [blame] | 697 | continue; |
Glenn L McGrath | 56f16b4 | 2003-11-18 21:37:52 +0000 | [diff] [blame] | 698 | |
| 699 | /* Can only do one file at a time */ |
Denis Vlasenko | e1a0d48 | 2006-10-20 13:28:22 +0000 | [diff] [blame] | 700 | return EXIT_FAILURE; |
Glenn L McGrath | 56f16b4 | 2003-11-18 21:37:52 +0000 | [diff] [blame] | 701 | } |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 702 | #else |
Denis Vlasenko | 218f2f4 | 2007-01-24 22:02:01 +0000 | [diff] [blame] | 703 | #define get_header_tar_Z NULL |
Glenn L McGrath | 56f16b4 | 2003-11-18 21:37:52 +0000 | [diff] [blame] | 704 | #endif |
| 705 | |
Denis Vlasenko | c888946 | 2006-12-17 19:08:20 +0000 | [diff] [blame] | 706 | #ifdef CHECK_FOR_CHILD_EXITCODE |
| 707 | /* Looks like it isn't needed - tar detects malformed (truncated) |
| 708 | * archive if e.g. bunzip2 fails */ |
| 709 | static int child_error; |
| 710 | |
| 711 | static void handle_SIGCHLD(int status) |
| 712 | { |
| 713 | /* Actually, 'status' is a signo. We reuse it for other needs */ |
| 714 | |
| 715 | /* Wait for any child without blocking */ |
Denis Vlasenko | fb0eba7 | 2008-01-02 19:55:04 +0000 | [diff] [blame] | 716 | if (wait_any_nohang(&status) < 0) |
Denis Vlasenko | c888946 | 2006-12-17 19:08:20 +0000 | [diff] [blame] | 717 | /* wait failed?! I'm confused... */ |
| 718 | return; |
| 719 | |
| 720 | if (WIFEXITED(status) && WEXITSTATUS(status)==0) |
| 721 | /* child exited with 0 */ |
| 722 | return; |
Denis Vlasenko | f7996f3 | 2007-01-11 17:20:00 +0000 | [diff] [blame] | 723 | /* Cannot happen? |
Denis Vlasenko | 51742f4 | 2007-04-12 00:32:05 +0000 | [diff] [blame] | 724 | if (!WIFSIGNALED(status) && !WIFEXITED(status)) return; */ |
Denis Vlasenko | c888946 | 2006-12-17 19:08:20 +0000 | [diff] [blame] | 725 | child_error = 1; |
| 726 | } |
| 727 | #endif |
| 728 | |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 729 | enum { |
| 730 | OPTBIT_KEEP_OLD = 7, |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 731 | IF_FEATURE_TAR_CREATE( OPTBIT_CREATE ,) |
| 732 | IF_FEATURE_TAR_CREATE( OPTBIT_DEREFERENCE ,) |
| 733 | IF_FEATURE_SEAMLESS_BZ2( OPTBIT_BZIP2 ,) |
| 734 | IF_FEATURE_SEAMLESS_LZMA(OPTBIT_LZMA ,) |
| 735 | IF_FEATURE_TAR_FROM( OPTBIT_INCLUDE_FROM,) |
| 736 | IF_FEATURE_TAR_FROM( OPTBIT_EXCLUDE_FROM,) |
| 737 | IF_FEATURE_SEAMLESS_GZ( OPTBIT_GZIP ,) |
Denys Vlasenko | d57d626 | 2009-09-17 02:43:14 +0200 | [diff] [blame] | 738 | IF_FEATURE_SEAMLESS_Z( OPTBIT_COMPRESS ,) /* 15th bit */ |
Denis Vlasenko | 8b814b4 | 2009-04-21 00:52:21 +0000 | [diff] [blame] | 739 | OPTBIT_NUMERIC_OWNER, |
Denys Vlasenko | d57d626 | 2009-09-17 02:43:14 +0200 | [diff] [blame] | 740 | OPTBIT_NOPRESERVE_OWNER, |
| 741 | OPTBIT_NOPRESERVE_PERM, |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 742 | OPT_TEST = 1 << 0, // t |
| 743 | OPT_EXTRACT = 1 << 1, // x |
| 744 | OPT_BASEDIR = 1 << 2, // C |
| 745 | OPT_TARNAME = 1 << 3, // f |
| 746 | OPT_2STDOUT = 1 << 4, // O |
| 747 | OPT_P = 1 << 5, // p |
| 748 | OPT_VERBOSE = 1 << 6, // v |
| 749 | OPT_KEEP_OLD = 1 << 7, // k |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 750 | OPT_CREATE = IF_FEATURE_TAR_CREATE( (1 << OPTBIT_CREATE )) + 0, // c |
| 751 | OPT_DEREFERENCE = IF_FEATURE_TAR_CREATE( (1 << OPTBIT_DEREFERENCE )) + 0, // h |
| 752 | OPT_BZIP2 = IF_FEATURE_SEAMLESS_BZ2( (1 << OPTBIT_BZIP2 )) + 0, // j |
| 753 | OPT_LZMA = IF_FEATURE_SEAMLESS_LZMA((1 << OPTBIT_LZMA )) + 0, // a |
| 754 | OPT_INCLUDE_FROM = IF_FEATURE_TAR_FROM( (1 << OPTBIT_INCLUDE_FROM)) + 0, // T |
| 755 | OPT_EXCLUDE_FROM = IF_FEATURE_TAR_FROM( (1 << OPTBIT_EXCLUDE_FROM)) + 0, // X |
| 756 | OPT_GZIP = IF_FEATURE_SEAMLESS_GZ( (1 << OPTBIT_GZIP )) + 0, // z |
| 757 | OPT_COMPRESS = IF_FEATURE_SEAMLESS_Z( (1 << OPTBIT_COMPRESS )) + 0, // Z |
Denis Vlasenko | 8b814b4 | 2009-04-21 00:52:21 +0000 | [diff] [blame] | 758 | OPT_NUMERIC_OWNER = 1 << OPTBIT_NUMERIC_OWNER, |
Denys Vlasenko | d57d626 | 2009-09-17 02:43:14 +0200 | [diff] [blame] | 759 | OPT_NOPRESERVE_OWNER = 1 << OPTBIT_NOPRESERVE_OWNER , // no-same-owner |
| 760 | OPT_NOPRESERVE_PERM = 1 << OPTBIT_NOPRESERVE_PERM, // no-same-permissions |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 761 | }; |
| 762 | #if ENABLE_FEATURE_TAR_LONG_OPTIONS |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 763 | static const char tar_longopts[] ALIGN1 = |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 764 | "list\0" No_argument "t" |
| 765 | "extract\0" No_argument "x" |
| 766 | "directory\0" Required_argument "C" |
| 767 | "file\0" Required_argument "f" |
| 768 | "to-stdout\0" No_argument "O" |
| 769 | "same-permissions\0" No_argument "p" |
| 770 | "verbose\0" No_argument "v" |
| 771 | "keep-old\0" No_argument "k" |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 772 | # if ENABLE_FEATURE_TAR_CREATE |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 773 | "create\0" No_argument "c" |
| 774 | "dereference\0" No_argument "h" |
Glenn L McGrath | ce91c8a | 2003-12-26 14:01:37 +0000 | [diff] [blame] | 775 | # endif |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 776 | # if ENABLE_FEATURE_SEAMLESS_BZ2 |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 777 | "bzip2\0" No_argument "j" |
Glenn L McGrath | ce91c8a | 2003-12-26 14:01:37 +0000 | [diff] [blame] | 778 | # endif |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 779 | # if ENABLE_FEATURE_SEAMLESS_LZMA |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 780 | "lzma\0" No_argument "a" |
Rob Landley | c1d6990 | 2006-01-20 18:28:50 +0000 | [diff] [blame] | 781 | # endif |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 782 | # if ENABLE_FEATURE_TAR_FROM |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 783 | "files-from\0" Required_argument "T" |
| 784 | "exclude-from\0" Required_argument "X" |
Glenn L McGrath | ce91c8a | 2003-12-26 14:01:37 +0000 | [diff] [blame] | 785 | # endif |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 786 | # if ENABLE_FEATURE_SEAMLESS_GZ |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 787 | "gzip\0" No_argument "z" |
Glenn L McGrath | ce91c8a | 2003-12-26 14:01:37 +0000 | [diff] [blame] | 788 | # endif |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 789 | # if ENABLE_FEATURE_SEAMLESS_Z |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 790 | "compress\0" No_argument "Z" |
Glenn L McGrath | ce91c8a | 2003-12-26 14:01:37 +0000 | [diff] [blame] | 791 | # endif |
Denys Vlasenko | d57d626 | 2009-09-17 02:43:14 +0200 | [diff] [blame] | 792 | /* use numeric uid/gid from tar header, not textual */ |
Denis Vlasenko | 8b814b4 | 2009-04-21 00:52:21 +0000 | [diff] [blame] | 793 | "numeric-owner\0" No_argument "\xfc" |
Denys Vlasenko | d57d626 | 2009-09-17 02:43:14 +0200 | [diff] [blame] | 794 | /* do not restore owner */ |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 795 | "no-same-owner\0" No_argument "\xfd" |
Denys Vlasenko | d57d626 | 2009-09-17 02:43:14 +0200 | [diff] [blame] | 796 | /* do not restore mode */ |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 797 | "no-same-permissions\0" No_argument "\xfe" |
Denis Vlasenko | 30d7a34 | 2006-11-27 20:24:40 +0000 | [diff] [blame] | 798 | /* --exclude takes next bit position in option mask, */ |
| 799 | /* therefore we have to either put it _after_ --no-same-perm */ |
Denys Vlasenko | d57d626 | 2009-09-17 02:43:14 +0200 | [diff] [blame] | 800 | /* or add OPT[BIT]_EXCLUDE before OPT[BIT]_NOPRESERVE_OWNER */ |
Denis Vlasenko | 30d7a34 | 2006-11-27 20:24:40 +0000 | [diff] [blame] | 801 | # if ENABLE_FEATURE_TAR_FROM |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 802 | "exclude\0" Required_argument "\xff" |
Denis Vlasenko | 30d7a34 | 2006-11-27 20:24:40 +0000 | [diff] [blame] | 803 | # endif |
Denis Vlasenko | 990d0f6 | 2007-07-24 15:54:42 +0000 | [diff] [blame] | 804 | ; |
Glenn L McGrath | ce91c8a | 2003-12-26 14:01:37 +0000 | [diff] [blame] | 805 | #endif |
Glenn L McGrath | ec87d37 | 2002-11-27 07:52:22 +0000 | [diff] [blame] | 806 | |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 807 | int tar_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Denis Vlasenko | a60f84e | 2008-07-05 09:18:54 +0000 | [diff] [blame] | 808 | int tar_main(int argc UNUSED_PARAM, char **argv) |
Glenn L McGrath | 2e772ed | 2001-10-05 02:58:48 +0000 | [diff] [blame] | 809 | { |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 810 | char FAST_FUNC (*get_header_ptr)(archive_handle_t *) = get_header_tar; |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 811 | archive_handle_t *tar_handle; |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 812 | char *base_dir = NULL; |
Glenn L McGrath | f66de64 | 2002-11-25 23:57:27 +0000 | [diff] [blame] | 813 | const char *tar_filename = "-"; |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 814 | unsigned opt; |
Denis Vlasenko | 3feb2fc | 2006-11-24 21:55:55 +0000 | [diff] [blame] | 815 | int verboseFlag = 0; |
Denis Vlasenko | 8c0164c | 2007-02-04 21:30:35 +0000 | [diff] [blame] | 816 | #if ENABLE_FEATURE_TAR_LONG_OPTIONS && ENABLE_FEATURE_TAR_FROM |
"Vladimir N. Oleynik" | 84e7511 | 2005-10-15 06:32:38 +0000 | [diff] [blame] | 817 | llist_t *excludes = NULL; |
Denis Vlasenko | 8c0164c | 2007-02-04 21:30:35 +0000 | [diff] [blame] | 818 | #endif |
Tim Riker | c1ef7bd | 2006-01-25 00:08:53 +0000 | [diff] [blame] | 819 | |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 820 | /* Initialise default values */ |
| 821 | tar_handle = init_handle(); |
Denis Vlasenko | a60936d | 2008-06-28 05:04:09 +0000 | [diff] [blame] | 822 | tar_handle->ah_flags = ARCHIVE_CREATE_LEADING_DIRS |
Denys Vlasenko | d57d626 | 2009-09-17 02:43:14 +0200 | [diff] [blame] | 823 | | ARCHIVE_RESTORE_DATE |
| 824 | | ARCHIVE_UNLINK_OLD; |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 825 | |
Denis Vlasenko | 73d702e | 2008-10-25 09:27:35 +0000 | [diff] [blame] | 826 | /* Apparently only root's tar preserves perms (see bug 3844) */ |
Denis Vlasenko | ebad029 | 2008-10-24 23:47:38 +0000 | [diff] [blame] | 827 | if (getuid() != 0) |
Denys Vlasenko | d57d626 | 2009-09-17 02:43:14 +0200 | [diff] [blame] | 828 | tar_handle->ah_flags |= ARCHIVE_DONT_RESTORE_PERM; |
Denis Vlasenko | ebad029 | 2008-10-24 23:47:38 +0000 | [diff] [blame] | 829 | |
"Vladimir N. Oleynik" | f704b27 | 2005-10-14 09:56:52 +0000 | [diff] [blame] | 830 | /* Prepend '-' to the first argument if required */ |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 831 | opt_complementary = "--:" // first arg is options |
Denis Vlasenko | 3feb2fc | 2006-11-24 21:55:55 +0000 | [diff] [blame] | 832 | "tt:vv:" // count -t,-v |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 833 | "?:" // bail out with usage instead of error return |
| 834 | "X::T::" // cumulative lists |
Denis Vlasenko | 8c0164c | 2007-02-04 21:30:35 +0000 | [diff] [blame] | 835 | #if ENABLE_FEATURE_TAR_LONG_OPTIONS && ENABLE_FEATURE_TAR_FROM |
Denis Vlasenko | 30d7a34 | 2006-11-27 20:24:40 +0000 | [diff] [blame] | 836 | "\xff::" // cumulative lists for --exclude |
Denis Vlasenko | 8c0164c | 2007-02-04 21:30:35 +0000 | [diff] [blame] | 837 | #endif |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 838 | IF_FEATURE_TAR_CREATE("c:") "t:x:" // at least one of these is reqd |
| 839 | IF_FEATURE_TAR_CREATE("c--tx:t--cx:x--ct") // mutually exclusive |
| 840 | IF_NOT_FEATURE_TAR_CREATE("t--x:x--t"); // mutually exclusive |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 841 | #if ENABLE_FEATURE_TAR_LONG_OPTIONS |
Denis Vlasenko | bdc88fd | 2007-07-23 17:14:14 +0000 | [diff] [blame] | 842 | applet_long_options = tar_longopts; |
Denis Vlasenko | c61852a | 2006-11-29 11:09:43 +0000 | [diff] [blame] | 843 | #endif |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 844 | opt = getopt32(argv, |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 845 | "txC:f:Opvk" |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 846 | IF_FEATURE_TAR_CREATE( "ch" ) |
| 847 | IF_FEATURE_SEAMLESS_BZ2( "j" ) |
| 848 | IF_FEATURE_SEAMLESS_LZMA("a" ) |
| 849 | IF_FEATURE_TAR_FROM( "T:X:") |
| 850 | IF_FEATURE_SEAMLESS_GZ( "z" ) |
| 851 | IF_FEATURE_SEAMLESS_Z( "Z" ) |
Denis Vlasenko | 8c0164c | 2007-02-04 21:30:35 +0000 | [diff] [blame] | 852 | , &base_dir // -C dir |
| 853 | , &tar_filename // -f filename |
Denis Vlasenko | 5e34ff2 | 2009-04-21 11:09:40 +0000 | [diff] [blame] | 854 | IF_FEATURE_TAR_FROM(, &(tar_handle->accept)) // T |
| 855 | IF_FEATURE_TAR_FROM(, &(tar_handle->reject)) // X |
Denis Vlasenko | 8c0164c | 2007-02-04 21:30:35 +0000 | [diff] [blame] | 856 | #if ENABLE_FEATURE_TAR_LONG_OPTIONS && ENABLE_FEATURE_TAR_FROM |
| 857 | , &excludes // --exclude |
| 858 | #endif |
| 859 | , &verboseFlag // combined count for -t and -v |
| 860 | , &verboseFlag // combined count for -t and -v |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 861 | ); |
Denys Vlasenko | d57d626 | 2009-09-17 02:43:14 +0200 | [diff] [blame] | 862 | //bb_error_msg("opt:%08x", opt); |
Denis Vlasenko | c450379 | 2008-04-29 02:43:23 +0000 | [diff] [blame] | 863 | argv += optind; |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 864 | |
Denis Vlasenko | 3feb2fc | 2006-11-24 21:55:55 +0000 | [diff] [blame] | 865 | if (verboseFlag) tar_handle->action_header = header_verbose_list; |
| 866 | if (verboseFlag == 1) tar_handle->action_header = header_list; |
| 867 | |
Denis Vlasenko | b596335 | 2006-11-26 01:46:59 +0000 | [diff] [blame] | 868 | if (opt & OPT_EXTRACT) |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 869 | tar_handle->action_data = data_extract_all; |
Tim Riker | c1ef7bd | 2006-01-25 00:08:53 +0000 | [diff] [blame] | 870 | |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 871 | if (opt & OPT_2STDOUT) |
Glenn L McGrath | 3b9fc8f | 2003-11-18 20:23:04 +0000 | [diff] [blame] | 872 | tar_handle->action_data = data_extract_to_stdout; |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 873 | |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 874 | if (opt & OPT_KEEP_OLD) |
Denys Vlasenko | d57d626 | 2009-09-17 02:43:14 +0200 | [diff] [blame] | 875 | tar_handle->ah_flags &= ~ARCHIVE_UNLINK_OLD; |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 876 | |
Denis Vlasenko | 8b814b4 | 2009-04-21 00:52:21 +0000 | [diff] [blame] | 877 | if (opt & OPT_NUMERIC_OWNER) |
| 878 | tar_handle->ah_flags |= ARCHIVE_NUMERIC_OWNER; |
| 879 | |
Denys Vlasenko | d57d626 | 2009-09-17 02:43:14 +0200 | [diff] [blame] | 880 | if (opt & OPT_NOPRESERVE_OWNER) |
| 881 | tar_handle->ah_flags |= ARCHIVE_DONT_RESTORE_OWNER; |
| 882 | |
| 883 | if (opt & OPT_NOPRESERVE_PERM) |
| 884 | tar_handle->ah_flags |= ARCHIVE_DONT_RESTORE_PERM; |
| 885 | |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 886 | if (opt & OPT_GZIP) |
Glenn L McGrath | eba86e2 | 2003-11-14 12:53:42 +0000 | [diff] [blame] | 887 | get_header_ptr = get_header_tar_gz; |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 888 | |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 889 | if (opt & OPT_BZIP2) |
Glenn L McGrath | 3b9fc8f | 2003-11-18 20:23:04 +0000 | [diff] [blame] | 890 | get_header_ptr = get_header_tar_bz2; |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 891 | |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 892 | if (opt & OPT_LZMA) |
Rob Landley | c1d6990 | 2006-01-20 18:28:50 +0000 | [diff] [blame] | 893 | get_header_ptr = get_header_tar_lzma; |
| 894 | |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 895 | if (opt & OPT_COMPRESS) |
Glenn L McGrath | 56f16b4 | 2003-11-18 21:37:52 +0000 | [diff] [blame] | 896 | get_header_ptr = get_header_tar_Z; |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 897 | |
Denis Vlasenko | 8c0164c | 2007-02-04 21:30:35 +0000 | [diff] [blame] | 898 | #if ENABLE_FEATURE_TAR_FROM |
| 899 | tar_handle->reject = append_file_list_to_list(tar_handle->reject); |
| 900 | #if ENABLE_FEATURE_TAR_LONG_OPTIONS |
| 901 | /* Append excludes to reject */ |
| 902 | while (excludes) { |
| 903 | llist_t *next = excludes->link; |
| 904 | excludes->link = tar_handle->reject; |
| 905 | tar_handle->reject = excludes; |
| 906 | excludes = next; |
Glenn L McGrath | 56f16b4 | 2003-11-18 21:37:52 +0000 | [diff] [blame] | 907 | } |
Denis Vlasenko | 8c0164c | 2007-02-04 21:30:35 +0000 | [diff] [blame] | 908 | #endif |
| 909 | tar_handle->accept = append_file_list_to_list(tar_handle->accept); |
| 910 | #endif |
Glenn L McGrath | ce91c8a | 2003-12-26 14:01:37 +0000 | [diff] [blame] | 911 | |
Glenn L McGrath | 2e772ed | 2001-10-05 02:58:48 +0000 | [diff] [blame] | 912 | /* Setup an array of filenames to work with */ |
Eric Andersen | aff114c | 2004-04-14 17:51:38 +0000 | [diff] [blame] | 913 | /* TODO: This is the same as in ar, separate function ? */ |
Denis Vlasenko | c450379 | 2008-04-29 02:43:23 +0000 | [diff] [blame] | 914 | while (*argv) { |
Denis Vlasenko | 3feb2fc | 2006-11-24 21:55:55 +0000 | [diff] [blame] | 915 | /* kill trailing '/' unless the string is just "/" */ |
Denis Vlasenko | c450379 | 2008-04-29 02:43:23 +0000 | [diff] [blame] | 916 | char *cp = last_char_is(*argv, '/'); |
| 917 | if (cp > *argv) |
Denis Vlasenko | 3feb2fc | 2006-11-24 21:55:55 +0000 | [diff] [blame] | 918 | *cp = '\0'; |
Denis Vlasenko | c450379 | 2008-04-29 02:43:23 +0000 | [diff] [blame] | 919 | llist_add_to_end(&tar_handle->accept, *argv); |
| 920 | argv++; |
Glenn L McGrath | c5c1a8a | 2002-10-19 06:19:22 +0000 | [diff] [blame] | 921 | } |
Glenn L McGrath | 98f824a | 2002-10-19 00:46:35 +0000 | [diff] [blame] | 922 | |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 923 | if (tar_handle->accept || tar_handle->reject) |
Glenn L McGrath | c5c1a8a | 2002-10-19 06:19:22 +0000 | [diff] [blame] | 924 | tar_handle->filter = filter_accept_reject_list; |
Glenn L McGrath | a0ee881 | 2002-08-22 13:44:08 +0000 | [diff] [blame] | 925 | |
Glenn L McGrath | 91b3d46 | 2003-10-02 14:33:23 +0000 | [diff] [blame] | 926 | /* Open the tar file */ |
| 927 | { |
| 928 | FILE *tar_stream; |
| 929 | int flags; |
| 930 | |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 931 | if (opt & OPT_CREATE) { |
Glenn L McGrath | ba49651 | 2003-11-20 09:06:10 +0000 | [diff] [blame] | 932 | /* Make sure there is at least one file to tar up. */ |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 933 | if (tar_handle->accept == NULL) |
| 934 | bb_error_msg_and_die("empty archive"); |
| 935 | |
Glenn L McGrath | 91b3d46 | 2003-10-02 14:33:23 +0000 | [diff] [blame] | 936 | tar_stream = stdout; |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 937 | /* Mimicking GNU tar 1.15.1: */ |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 938 | flags = O_WRONLY | O_CREAT | O_TRUNC; |
Rob Landley | 60fe7bf | 2005-10-16 03:54:49 +0000 | [diff] [blame] | 939 | } else { |
Glenn L McGrath | 91b3d46 | 2003-10-02 14:33:23 +0000 | [diff] [blame] | 940 | tar_stream = stdin; |
| 941 | flags = O_RDONLY; |
| 942 | } |
| 943 | |
Denis Vlasenko | 9f73944 | 2006-12-16 23:49:13 +0000 | [diff] [blame] | 944 | if (LONE_DASH(tar_filename)) { |
Glenn L McGrath | 91b3d46 | 2003-10-02 14:33:23 +0000 | [diff] [blame] | 945 | tar_handle->src_fd = fileno(tar_stream); |
Denis Vlasenko | 1385899 | 2006-10-08 12:49:22 +0000 | [diff] [blame] | 946 | tar_handle->seek = seek_by_read; |
Glenn L McGrath | 91b3d46 | 2003-10-02 14:33:23 +0000 | [diff] [blame] | 947 | } else { |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 948 | if (ENABLE_FEATURE_TAR_AUTODETECT && flags == O_RDONLY) { |
| 949 | get_header_ptr = get_header_tar; |
| 950 | tar_handle->src_fd = open_zipped(tar_filename); |
| 951 | if (tar_handle->src_fd < 0) |
| 952 | bb_perror_msg_and_die("can't open '%s'", tar_filename); |
| 953 | } else { |
| 954 | tar_handle->src_fd = xopen(tar_filename, flags); |
| 955 | } |
Glenn L McGrath | 91b3d46 | 2003-10-02 14:33:23 +0000 | [diff] [blame] | 956 | } |
| 957 | } |
| 958 | |
Bernhard Reutner-Fischer | d9cf7ac | 2006-04-12 18:39:58 +0000 | [diff] [blame] | 959 | if (base_dir) |
Rob Landley | 86b4d64 | 2006-08-03 17:58:17 +0000 | [diff] [blame] | 960 | xchdir(base_dir); |
Glenn L McGrath | 91b3d46 | 2003-10-02 14:33:23 +0000 | [diff] [blame] | 961 | |
Denis Vlasenko | c888946 | 2006-12-17 19:08:20 +0000 | [diff] [blame] | 962 | #ifdef CHECK_FOR_CHILD_EXITCODE |
| 963 | /* We need to know whether child (gzip/bzip/etc) exits abnormally */ |
| 964 | signal(SIGCHLD, handle_SIGCHLD); |
| 965 | #endif |
| 966 | |
Glenn L McGrath | 2e772ed | 2001-10-05 02:58:48 +0000 | [diff] [blame] | 967 | /* create an archive */ |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 968 | if (opt & OPT_CREATE) { |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 969 | #if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2 |
Rob Landley | cc8885f | 2005-08-30 03:40:03 +0000 | [diff] [blame] | 970 | int zipMode = 0; |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 971 | if (ENABLE_FEATURE_SEAMLESS_GZ && (opt & OPT_GZIP)) |
Tim Riker | c1ef7bd | 2006-01-25 00:08:53 +0000 | [diff] [blame] | 972 | zipMode = 1; |
Denis Vlasenko | e9ad84d | 2008-08-05 13:10:34 +0000 | [diff] [blame] | 973 | if (ENABLE_FEATURE_SEAMLESS_BZ2 && (opt & OPT_BZIP2)) |
Tim Riker | c1ef7bd | 2006-01-25 00:08:53 +0000 | [diff] [blame] | 974 | zipMode = 2; |
Denis Vlasenko | 431a7c9 | 2008-02-19 11:26:28 +0000 | [diff] [blame] | 975 | #endif |
Denis Vlasenko | c888946 | 2006-12-17 19:08:20 +0000 | [diff] [blame] | 976 | /* NB: writeTarFile() closes tar_handle->src_fd */ |
| 977 | return writeTarFile(tar_handle->src_fd, verboseFlag, opt & OPT_DEREFERENCE, |
Bernhard Reutner-Fischer | 18260d5 | 2006-04-18 14:17:49 +0000 | [diff] [blame] | 978 | tar_handle->accept, |
Denis Vlasenko | 3feb2fc | 2006-11-24 21:55:55 +0000 | [diff] [blame] | 979 | tar_handle->reject, zipMode); |
Glenn L McGrath | 98f824a | 2002-10-19 00:46:35 +0000 | [diff] [blame] | 980 | } |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 981 | |
Denis Vlasenko | b8a8e60 | 2006-11-24 14:59:45 +0000 | [diff] [blame] | 982 | while (get_header_ptr(tar_handle) == EXIT_SUCCESS) |
Denis Vlasenko | 431a7c9 | 2008-02-19 11:26:28 +0000 | [diff] [blame] | 983 | continue; |
Denis Vlasenko | b8a8e60 | 2006-11-24 14:59:45 +0000 | [diff] [blame] | 984 | |
| 985 | /* Check that every file that should have been extracted was */ |
| 986 | while (tar_handle->accept) { |
| 987 | if (!find_list_entry(tar_handle->reject, tar_handle->accept->data) |
| 988 | && !find_list_entry(tar_handle->passed, tar_handle->accept->data) |
| 989 | ) { |
| 990 | bb_error_msg_and_die("%s: not found in archive", |
| 991 | tar_handle->accept->data); |
| 992 | } |
| 993 | tar_handle->accept = tar_handle->accept->link; |
| 994 | } |
| 995 | if (ENABLE_FEATURE_CLEAN_UP /* && tar_handle->src_fd != STDIN_FILENO */) |
Glenn L McGrath | 8132e93 | 2002-09-28 02:06:39 +0000 | [diff] [blame] | 996 | close(tar_handle->src_fd); |
Glenn L McGrath | 7ca04f3 | 2002-09-25 02:47:48 +0000 | [diff] [blame] | 997 | |
Denis Vlasenko | 376ce1e | 2006-11-24 14:51:01 +0000 | [diff] [blame] | 998 | return EXIT_SUCCESS; |
Glenn L McGrath | 2e772ed | 2001-10-05 02:58:48 +0000 | [diff] [blame] | 999 | } |