*
* Note, that as of BusyBox-0.43, tar has been completely rewritten from the
* ground up. It still has remnents of the old code lying about, but it is
- * very different now (i.e. cleaner, less global variables, etc)
+ * very different now (i.e., cleaner, less global variables, etc.)
*
* Copyright (C) 1999,2000,2001 by Lineo, inc.
* Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
#include <stdlib.h>
#include <unistd.h>
#include "busybox.h"
-#define BB_DECLARE_EXTERN
-#define bb_need_io_error
-#define bb_need_name_longer_than_foo
-#include "messages.c"
-
-#ifdef BB_FEATURE_TAR_GZIP
-extern int unzip(int in, int out);
-extern int gz_open(FILE *compressed_file, int *pid);
-extern void gz_close(int gunzip_pid);
-#endif
/* Tar file constants */
#ifndef MAJOR
gid_t gid; /* Numeric GID */
size_t size; /* Size of file */
time_t mtime; /* Last-modified time */
- enum TarFileType type; /* Regular, directory, link, etc */
+ enum TarFileType type; /* Regular, directory, link, etc. */
char * linkname; /* Name for symbolic and hard links */
long devmajor; /* Major number for special device */
long devminor; /* Minor number for special device */
typedef struct TarInfo TarInfo;
/* Local procedures to restore files from a tar file. */
-extern int readTarFile(int tarFd, int extractFlag, int listFlag,
+static int readTarFile(int tarFd, int extractFlag, int listFlag,
int tostdoutFlag, int verboseFlag, char** extractList,
char** excludeList);
char** excludeList=NULL;
char** extractList=NULL;
const char *tarName="-";
+ const char *cwd=NULL;
#if defined BB_FEATURE_TAR_EXCLUDE
int excludeListSize=0;
FILE *fileList;
while (
#ifndef BB_FEATURE_TAR_EXCLUDE
- (opt = getopt(argc, argv, "cxtzvOf:"))
+ (opt = getopt(argc, argv, "cxtzvOf:pC:"))
#else
- (opt = getopt_long(argc, argv, "cxtzvOf:X:", longopts, NULL))
+ (opt = getopt_long(argc, argv, "cxtzvOf:X:pC:", longopts, NULL))
#endif
> 0) {
switch (opt) {
fclose(fileList);
break;
#endif
- default:
+ case 'p':
+ break;
+ case 'C':
+ cwd = xgetcwd((char *)cwd);
+ if (chdir(optarg)) {
+ printf("cd: %s: %s\n", optarg, strerror(errno));
+ return EXIT_FAILURE;
+ }
+ break;
+ default:
show_usage();
}
}
/* unzip tarFd in a seperate process */
if (unzipFlag == TRUE) {
comp_file = fdopen(tarFd, "r");
- if ((tarFd = gz_open(comp_file, &pid)) == EXIT_FAILURE) {
+ if ((tarFd = fileno(gz_open(comp_file, &pid))) == EXIT_FAILURE) {
error_msg_and_die("Couldnt unzip file");
}
}
status = readTarFile(tarFd, extractFlag, listFlag, tostdoutFlag,
verboseFlag, extractList, excludeList);
close(tarFd);
- }
-
#ifdef BB_FEATURE_TAR_GZIP
- gz_close(pid);
- fclose(comp_file);
+ if (unzipFlag == TRUE) {
+ gz_close(pid);
+ fclose(comp_file);
+ }
#endif
+ }
+ if (cwd)
+ chdir(cwd);
if (status == TRUE)
return EXIT_SUCCESS;
else
fixUpPermissions(TarInfo *header)
{
struct utimbuf t;
- /* Now set permissions etc for the new file */
+ /* Now set permissions etc. for the new file */
chown(header->name, header->uid, header->gid);
chmod(header->name, header->mode);
/* Reset the time */
size_t writeSize;
size_t readSize;
size_t actualWriteSz;
- char buffer[BUFSIZ];
+ char buffer[20 * TAR_BLOCK_SIZE];
size_t size = header->size;
int outFd=fileno(stdout);
if (extractFlag==TRUE && tostdoutFlag==FALSE) {
/* Create the path to the file, just in case it isn't there...
* This should not screw up path permissions or anything. */
- create_path(header->name, 0777);
+ char *dir = dirname (header->name);
+ make_directory (dir, -1, FILEUTILS_RECUR);
+ free (dir);
if ((outFd=open(header->name, O_CREAT|O_TRUNC|O_WRONLY,
header->mode & ~S_IFMT)) < 0) {
error_msg(io_error, header->name, strerror(errno));
if ( size > sizeof(buffer) )
writeSize = readSize = sizeof(buffer);
else {
- int mod = size % 512;
+ int mod = size % TAR_BLOCK_SIZE;
if ( mod != 0 )
- readSize = size + (512 - mod);
+ readSize = size + (TAR_BLOCK_SIZE - mod);
else
readSize = size;
writeSize = size;
static int
tarExtractDirectory(TarInfo *header, int extractFlag, int tostdoutFlag)
{
-
if (extractFlag==FALSE || tostdoutFlag==TRUE)
return( TRUE);
- if (create_path(header->name, header->mode) != TRUE) {
- perror_msg("%s: Cannot mkdir", header->name);
+ if (make_directory(header->name, header->mode, FILEUTILS_RECUR) < 0)
return( FALSE);
- }
- /* make the final component, just in case it was
- * omitted by create_path() (which will skip the
- * directory if it doesn't have a terminating '/') */
- if (mkdir(header->name, header->mode) < 0 && errno != EEXIST) {
- perror_msg("%s", header->name);
- return FALSE;
- }
fixUpPermissions(header);
return( TRUE);
return( FALSE);
}
- /* Now set permissions etc for the new directory */
+ /* Now set permissions etc. for the new directory */
fixUpPermissions(header);
return( TRUE);
}
}
}
- /* Now set permissions etc for the new directory */
+ /* Now set permissions etc. for the new directory */
fixUpPermissions(header);
return( TRUE);
}
-/* Read an octal value in a field of the specified width, with optional
- * spaces on both sides of the number and with an optional null character
- * at the end. Returns -1 on an illegal format. */
-static long getOctal(const char *cp, int size)
-{
- long val = 0;
-
- for(;(size > 0) && (*cp == ' '); cp++, size--);
- if ((size == 0) || !is_octal(*cp))
- return -1;
- for(; (size > 0) && is_octal(*cp); size--) {
- val = val * 8 + *cp++ - '0';
- }
- for (;(size > 0) && (*cp == ' '); cp++, size--);
- if ((size > 0) && *cp)
- return -1;
- return val;
-}
-
-
/* Parse the tar header and fill in the nice struct with the details */
static int
readTarHeader(struct TarHeader *rawHeader, struct TarInfo *header)
static int alreadyWarned=FALSE;
while (*(header->name) == '/')
- ++*(header->name);
+ header->name++;
if (alreadyWarned == FALSE) {
error_msg("Removing leading '/' from member names");
}
}
- header->mode = getOctal(rawHeader->mode, sizeof(rawHeader->mode));
- header->uid = getOctal(rawHeader->uid, sizeof(rawHeader->uid));
- header->gid = getOctal(rawHeader->gid, sizeof(rawHeader->gid));
- header->size = getOctal(rawHeader->size, sizeof(rawHeader->size));
- header->mtime = getOctal(rawHeader->mtime, sizeof(rawHeader->mtime));
- chksum = getOctal(rawHeader->chksum, sizeof(rawHeader->chksum));
+ header->mode = strtol(rawHeader->mode, NULL, 8);
+ header->uid = strtol(rawHeader->uid, NULL, 8);
+ header->gid = strtol(rawHeader->gid, NULL, 8);
+ header->size = strtol(rawHeader->size, NULL, 8);
+ header->mtime = strtol(rawHeader->mtime, NULL, 8);
+ chksum = strtol(rawHeader->chksum, NULL, 8);
header->type = rawHeader->typeflag;
header->linkname = rawHeader->linkname;
- header->devmajor = getOctal(rawHeader->devmajor, sizeof(rawHeader->devmajor));
- header->devminor = getOctal(rawHeader->devminor, sizeof(rawHeader->devminor));
+ header->devmajor = strtol(rawHeader->devmajor, NULL, 8);
+ header->devminor = strtol(rawHeader->devminor, NULL, 8);
/* Check the checksum */
for (i = sizeof(*rawHeader); i-- != 0;) {
* Read a tar file and extract or list the specified files within it.
* If the list is empty than all files are extracted or listed.
*/
-extern int readTarFile(int tarFd, int extractFlag, int listFlag,
+static int readTarFile(int tarFd, int extractFlag, int listFlag,
int tostdoutFlag, int verboseFlag, char** extractList,
char** excludeList)
{
TarHeader rawHeader;
TarInfo header;
- /* Set the umask for this process so it doesn't
- * screw up permission setting for us later. */
- umask(0);
-
/* Read the tar file, and iterate over it one file at a time */
while ( (status = full_read(tarFd, (char*)&rawHeader, TAR_BLOCK_SIZE)) == TAR_BLOCK_SIZE ) {
}
}
if ( *(header.name) == '\0' )
- goto endgame;
+ continue;
header.tarFd = tarFd;
/* Skip funky extra GNU headers that precede long files */
case REGTYPE0:
/* If the name ends in a '/' then assume it is
* supposed to be a directory, and fall through */
- if (header.name[strlen(header.name)-1] != '/') {
+ if (!last_char_is(header.name,'/')) {
if (tarExtractRegularFile(&header, extractFlag, tostdoutFlag)==FALSE)
errorFlag=TRUE;
break;
header.typeflag = LNKTYPE;
strncpy(header.linkname, tbInfo->hlInfo->name, sizeof(header.linkname));
} else if (S_ISLNK(statbuf->st_mode)) {
- int link_size=0;
- char buffer[BUFSIZ];
- header.typeflag = SYMTYPE;
- link_size = readlink(real_name, buffer, sizeof(buffer) - 1);
- if ( link_size < 0) {
- perror_msg("Error reading symlink '%s'", header.name);
+ char *lpath = xreadlink(real_name);
+ if (!lpath) /* Already printed err msg inside xreadlink() */
return ( FALSE);
- }
- buffer[link_size] = '\0';
- strncpy(header.linkname, buffer, sizeof(header.linkname));
+ header.typeflag = SYMTYPE;
+ strncpy(header.linkname, lpath, sizeof(header.linkname));
+ free(lpath);
} else if (S_ISDIR(statbuf->st_mode)) {
header.typeflag = DIRTYPE;
strncat(header.name, "/", sizeof(header.name));
return ( FALSE);
}
- /* Calculate and store the checksum (i.e. the sum of all of the bytes of
+ /* Calculate and store the checksum (i.e., the sum of all of the bytes of
* the header). The checksum field must be filled with blanks for the
* calculation. The checksum field is formatted differently from the
* other fields: it has [6] digits, a null, then a space -- rather than
if (fstat(tbInfo.tarFd, &tbInfo.statBuf) < 0)
error_msg_and_die(io_error, tarName, strerror(errno));
- /* Set the umask for this process so it doesn't
- * screw up permission setting for us later. */
- umask(0);
-
/* Read the directory/files and iterate over them one at a time */
while (*argv != NULL) {
if (recursive_action(*argv++, TRUE, FALSE, FALSE,