diff options
Diffstat (limited to 'tar.c')
| -rw-r--r-- | tar.c | 86 |
1 files changed, 74 insertions, 12 deletions
@@ -228,6 +228,7 @@ extern int tar_main(int argc, char **argv) case 'O': tostdoutFlag = TRUE; + tarName = "-"; break; case '-': @@ -439,7 +440,7 @@ static long getOctal(const char *cp, int size) /* Parse the tar header and fill in the nice struct with the details */ static int -parseTarHeader(struct TarHeader *rawHeader, struct TarInfo *header) +readTarHeader(struct TarHeader *rawHeader, struct TarInfo *header) { int i; long chksum, sum; @@ -502,7 +503,7 @@ static int readTarFile(const char* tarName, int extractFlag, int listFlag, while ( (status = fullRead(tarFd, (char*)&rawHeader, TAR_BLOCK_SIZE)) == TAR_BLOCK_SIZE ) { /* First, try to read the header */ - if ( parseTarHeader(&rawHeader, &header) == FALSE ) { + if ( readTarHeader(&rawHeader, &header) == FALSE ) { close( tarFd); if ( *(header.name) == '\0' ) { goto endgame; @@ -661,25 +662,80 @@ static int putOctal (char *cp, int len, long value) return TRUE; } -static int fileAction(const char *fileName, struct stat *statbuf) +/* Write out a tar header for the specified file */ +static int +writeTarHeader(struct TarHeader *rawHeader, struct TarInfo *header) { - fprintf(stdout, "%s\n", fileName); + int i; + long chksum, sum; + unsigned char *s = (unsigned char *)rawHeader; + + struct TarHeader header; + + strcpy(header.name, fileName); + putOctal(header.mode, sizeof(header.mode), statbuf->st_mode & 0777); + putOctal(header.uid, sizeof(header.uid), statbuf->st_uid); + putOctal(header.gid, sizeof(header.gid), statbuf->st_gid); + putOctal(header.size, sizeof(header.size), statbuf->st_size); + putOctal(header.mtime, sizeof(header.mtime), statbuf->st_mtime); + + if (S_ISLNK(statbuf.st_mode)) { + header.type = LNKTYPE; + // Handle SYMTYPE + } else if (S_ISDIR(statbuf.st_mode)) { + header.type = DIRTYPE; + } else if (S_ISCHR(statbuf.st_mode)) { + header.type = CHRTYPE; + } else if (S_ISBLK(statbuf.st_mode)) { + header.type = BLKTYPE; + } else if (S_ISFIFO(statbuf.st_mode)) { + header.type = FIFOTYPE; + } else if (S_ISSOCK(statbuf.st_mode)) { + header.type = S_ISSOCK; + } else if (S_ISLNK(statbuf.st_mode)) { + header.type = LNKTYPE; + } else if (S_ISLNK(statbuf.st_mode)) { + header.type = REGTYPE; + } +#if 0 + header->linkname = rawHeader->linkname; + header->devmajor = getOctal(rawHeader->devmajor, sizeof(rawHeader->devmajor)); + header->devminor = getOctal(rawHeader->devminor, sizeof(rawHeader->devminor)); + + /* Write out the checksum */ + chksum = getOctal(rawHeader->chksum, sizeof(rawHeader->chksum)); +#endif + + return ( TRUE); +} + + +static int fileAction(const char *fileName, struct stat *statbuf, void* userData) +{ + int *tarFd=(int*)userData; + dprintf(*tarFd, "%s\n", fileName); return (TRUE); } static int writeTarFile(const char* tarName, int extractFlag, int listFlag, int tostdoutFlag, int verboseFlag, int argc, char **argv) { - int tarFd=0; + int tarFd=-1; //int errorFlag=FALSE; //TarHeader rawHeader; //TarInfo header; //int alreadyWarned=FALSE; - char *directory = "."; //int skipFileFlag=FALSE; + struct stat tarballStat; + dev_t tarDev = 0; + ino_t tarInode = 0; + + /* Make sure there is at least one file to tar up. */ + if (argc <= 0) + fatalError("tar: Cowardly refusing to create an empty archive\n"); /* Open the tar file for writing. */ - if (!strcmp(tarName, "-")) + if (tostdoutFlag == TRUE) tarFd = fileno(stdout); else tarFd = open (tarName, O_WRONLY | O_CREAT | O_TRUNC, 0644); @@ -687,19 +743,25 @@ static int writeTarFile(const char* tarName, int extractFlag, int listFlag, errorMsg( "Error opening '%s': %s\n", tarName, strerror(errno)); return ( FALSE); } + /* Store the device and inode of the tarball, so we can be sure + * not to try and include it into itself.... */ + if (fstat(tarFd, &tarballStat) < 0) + fatalError(io_error, tarName, strerror(errno)); + tarDev = tarballStat.st_dev; + tarInode = tarballStat.st_ino; /* 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 */ - if (recursiveAction(directory, TRUE, FALSE, FALSE, - fileAction, fileAction) == FALSE) { - exit(FALSE); + while (argc-- > 0) { + if (recursiveAction(*argv++, TRUE, FALSE, FALSE, + fileAction, fileAction, (void*) &tarFd) == FALSE) { + exit(FALSE); + } } - - // TODO: DO STUFF HERE close(tarFd); return( TRUE); } |