* Modified for busybox by Erik Andersen <andersee@debian.org>
* Adjusted to grok stdin/stdout options.
*
+ * Modified to handle device special files by Matt Porter
+ * <porter@debian.org>
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
#include <fcntl.h>
#include <signal.h>
#include <time.h>
+#include <utime.h>
+#include <sys/types.h>
+#include <sys/sysmacros.h>
static const char tar_usage[] =
static int eofFlag;
static long dataCc;
static int outFd;
-static char outName[TAR_NAME_SIZE];
+static const char *outName;
+static int mode;
+static int uid;
+static int gid;
+static time_t mtime;
/*
* Static data associated with the tar file.
* Open the tar file for reading.
*/
if ((tarName == NULL) || !strcmp (tarName, "-")) {
- tarFd = STDIN;
+ tarFd = fileno(stdin);
} else
tarFd = open (tarName, O_RDONLY);
* message is required on errors.
*/
if (tostdoutFlag == FALSE) {
- if (outFd >= 0)
- (void) close (outFd);
+ if (outFd >= 0) {
+ close (outFd);
+ }
}
}
static void
readHeader (const TarHeader * hp, int fileCount, char **fileTable)
{
- int mode;
- int uid;
- int gid;
int checkSum;
- long size;
- time_t mtime;
- const char *name;
int cc;
int hardLink;
int softLink;
+ int devFileFlag;
+ unsigned int major;
+ unsigned int minor;
+ long size;
+ struct utimbuf utb;
/*
* If the block is completely empty, then this is the end of the
* archive file. If the name is null, then just skip this header.
*/
- name = hp->name;
+ outName = hp->name;
- if (*name == '\0') {
+ if (*outName == '\0') {
for (cc = TAR_BLOCK_SIZE; cc > 0; cc--) {
- if (*name++)
+ if (*outName++)
return;
}
size = getOctal (hp->size, sizeof (hp->size));
mtime = getOctal (hp->mtime, sizeof (hp->mtime));
checkSum = getOctal (hp->checkSum, sizeof (hp->checkSum));
+ major = getOctal (hp->devMajor, sizeof (hp->devMajor));
+ minor = getOctal (hp->devMinor, sizeof (hp->devMinor));
if ((mode < 0) || (uid < 0) || (gid < 0) || (size < 0)) {
if (badHeader==FALSE)
badHeader = FALSE;
skipFileFlag = FALSE;
+ devFileFlag = FALSE;
/*
* Check for the file modes.
(hp->typeFlag == TAR_TYPE_SOFT_LINK - '0'));
/*
- * Check for a directory or a regular file.
+ * Check for a directory.
*/
- if (name[strlen (name) - 1] == '/')
+ if (outName[strlen (outName) - 1] == '/')
mode |= S_IFDIR;
- else if ((mode & S_IFMT) == 0)
- mode |= S_IFREG;
/*
* Check for absolute paths in the file.
* If we find any, then warn the user and make them relative.
*/
- if (*name == '/') {
- while (*name == '/')
- name++;
+ if (*outName == '/') {
+ while (*outName == '/')
+ outName++;
if (warnedRoot==FALSE) {
fprintf (stderr,
* See if we want this file to be restored.
* If not, then set up to skip it.
*/
- if (wantFileName (name, fileCount, fileTable) == FALSE) {
- if (!hardLink && !softLink && S_ISREG (mode)) {
+ if (wantFileName (outName, fileCount, fileTable) == FALSE) {
+ if ( !hardLink && !softLink && (S_ISREG (mode) || S_ISCHR (mode)
+ || S_ISBLK (mode) || S_ISSOCK(mode) || S_ISFIFO(mode) ) ) {
inHeader = (size == 0)? TRUE : FALSE;
dataCc = size;
}
*/
if (extractFlag==FALSE) {
if (verboseFlag==TRUE) {
- printf ("%s %3d/%-d %9ld %s %s", modeString (mode),
- uid, gid, size, timeString (mtime), name);
- } else
- printf ("%s", name);
+ printf ("%s %3d/%-d ", modeString (mode), uid, gid);
+ if( S_ISCHR (mode) || S_ISBLK (mode) )
+ printf ("%4d,%4d %s ", major,minor, timeString (mtime));
+ else
+ printf ("%9ld %s ", size, timeString (mtime));
+ }
+ printf ("%s", outName);
if (hardLink)
printf (" (link to \"%s\")", hp->linkName);
else if (softLink)
printf (" (symlink to \"%s\")", hp->linkName);
- else if (S_ISREG (mode)) {
+ else if (S_ISREG (mode) || S_ISCHR (mode) || S_ISBLK (mode) ||
+ S_ISSOCK(mode) || S_ISFIFO(mode) ) {
inHeader = (size == 0)? TRUE : FALSE;
dataCc = size;
}
* We really want to extract the file.
*/
if (verboseFlag==TRUE)
- printf ("x %s\n", name);
+ printf ("x %s\n", outName);
if (hardLink) {
- if (link (hp->linkName, name) < 0)
- perror (name);
-
+ if (link (hp->linkName, outName) < 0)
+ perror (outName);
+ /* Set the file time */
+ utb.actime = mtime;
+ utb.modtime = mtime;
+ utime (outName, &utb);
+ /* Set the file permissions */
+ chown(outName, uid, gid);
+ chmod(outName, mode);
return;
}
if (softLink) {
#ifdef S_ISLNK
- if (symlink (hp->linkName, name) < 0)
- perror (name);
+ if (symlink (hp->linkName, outName) < 0)
+ perror (outName);
+ /* Try to change ownership of the symlink.
+ * If libs doesn't support that, don't bother.
+ * Changing the pointed-to file is the Wrong Thing(tm).
+ */
+#if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
+ lchown(outName, uid, gid);
+#endif
+
+ /* Do not change permissions or date on symlink,
+ * since it changes the pointed to file instead. duh. */
#else
fprintf (stderr, "Cannot create symbolic links\n");
#endif
return;
}
+ /* Set the umask for this process so it doesn't
+ * screw things up. */
+ umask(0);
+
/*
* If the file is a directory, then just create the path.
*/
if (S_ISDIR (mode)) {
- createPath (name, mode);
-
+ createPath (outName, mode);
+ /* Set the file time */
+ utb.actime = mtime;
+ utb.modtime = mtime;
+ utime (outName, &utb);
+ /* Set the file permissions */
+ chown(outName, uid, gid);
+ chmod(outName, mode);
return;
}
/*
* There is a file to write.
- * First create the path to it if necessary with a default permission.
+ * First create the path to it if necessary with default permissions.
*/
- createPath (name, 0777);
+ createPath (outName, 0777);
inHeader = (size == 0)? TRUE : FALSE;
dataCc = size;
* Start the output file.
*/
if (tostdoutFlag == TRUE)
- outFd = STDOUT;
- else
- outFd = open (name, O_WRONLY | O_CREAT | O_TRUNC, mode);
-
- if (outFd < 0) {
- perror (name);
- skipFileFlag = TRUE;
- return;
+ outFd = fileno(stdout);
+ else {
+ if ( S_ISCHR(mode) || S_ISBLK(mode) || S_ISSOCK(mode) ) {
+ devFileFlag = TRUE;
+ outFd = mknod (outName, mode, makedev(major, minor) );
+ }
+ else if (S_ISFIFO(mode) ) {
+ devFileFlag = TRUE;
+ outFd = mkfifo(outName, mode);
+ } else {
+ outFd = open (outName, O_WRONLY | O_CREAT | O_TRUNC, mode);
+ }
+ if (outFd < 0) {
+ perror (outName);
+ skipFileFlag = TRUE;
+ return;
+ }
+ /* Set the file time */
+ utb.actime = mtime;
+ utb.modtime = mtime;
+ utime (outName, &utb);
+ /* Set the file permissions */
+ chown(outName, uid, gid);
+ chmod(outName, mode);
}
+
/*
* If the file is empty, then that's all we need to do.
*/
- if (size == 0 && tostdoutFlag == FALSE) {
- (void) close (outFd);
+ if (size == 0 && (tostdoutFlag == FALSE) && (devFileFlag == FALSE)) {
+ close (outFd);
outFd = -1;
}
}
if (fullWrite (outFd, cp, count) < 0) {
perror (outName);
if (tostdoutFlag == FALSE) {
- (void) close (outFd);
+ close (outFd);
outFd = -1;
}
skipFileFlag = TRUE;
}
/*
- * If the write failed, close the file and disable further
- * writes to this file.
+ * Check if we are done writing to the file now.
*/
if (dataCc <= 0 && tostdoutFlag == FALSE) {
+ struct utimbuf utb;
if (close (outFd))
perror (outName);
+ /* Set the file time */
+ utb.actime = mtime;
+ utb.modtime = mtime;
+ utime (outName, &utb);
+ /* Set the file permissions */
+ chown(outName, uid, gid);
+ chmod(outName, mode);
+
outFd = -1;
}
}
*/
if ((tarName == NULL) || !strcmp (tarName, "-")) {
tostdoutFlag = TRUE;
- tarFd = STDOUT;
+ tarFd = fileno(stdout);
} else
tarFd = open (tarName, O_WRONLY | O_CREAT | O_TRUNC, 0666);
tarDev = statbuf.st_dev;
tarInode = statbuf.st_ino;
-
+
/*
* Append each file name into the archive file.
* Follow symbolic links for these top level file names.
static void saveFile (const char *fileName, int seeLinks)
{
int status;
- int mode;
struct stat statbuf;
if (verboseFlag==TRUE)
return;
}
-
if (S_ISREG (mode)) {
saveRegularFile (fileName, &statbuf);
return;
}
+
+ /* Some day add support for tarring these up... but not today. :) */
+// if (S_ISLNK(mode) || S_ISFIFO(mode) || S_ISBLK(mode) || S_ISCHR (mode) ) {
+// fprintf (stderr, "%s: This version of tar can't store this type of file\n", fileName);
+// }
/*
* The file is a strange type of file, ignore it.