* 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.)
*
- * Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen
- * Copyright (C) 1999-2002 by Erik Andersen <andersee@debian.org>
+ * Copyright (C) 1999-2003 by Erik Andersen <andersen@codepoet.org>
*
* Based in part in the tar implementation in sash
* Copyright (c) 1999 by David I. Bell
if (tbInfo->verboseFlag) {
FILE *vbFd = stdout;
- if (tbInfo->verboseFlag == 2) /* If the archive goes to stdout, verbose to stderr */
+ if (tbInfo->tarFd == fileno(stdout)) /* If the archive goes to stdout, verbose to stderr */
vbFd = stderr;
+
fprintf(vbFd, "%s\n", header.name);
}
return (TRUE);
}
-static inline int writeTarFile(const char *tarName, const int verboseFlag,
+static inline int writeTarFile(const int tar_fd, const int verboseFlag,
const llist_t *include, const llist_t *exclude, const int gzip)
{
#ifdef CONFIG_FEATURE_TAR_GZIP
bb_error_msg_and_die("Cowardly refusing to create an empty archive");
}
- /* Open the tar file for writing. */
- if (tarName == NULL || (tarName[0] == '-' && tarName[1] == '\0')) {
- tbInfo.tarFd = fileno(stdout);
- tbInfo.verboseFlag = verboseFlag ? 2 : 0;
- } else {
- tbInfo.tarFd = open(tarName, O_WRONLY | O_CREAT | O_TRUNC, 0644);
- tbInfo.verboseFlag = verboseFlag ? 1 : 0;
- }
-
- if (tbInfo.tarFd < 0) {
- bb_perror_msg("%s: Cannot open", tarName);
- freeHardLinkInfo(&tbInfo.hlInfoHead);
- return (FALSE);
- }
+ fchmod(tar_fd, 0644);
+ tbInfo.tarFd = tar_fd;
+ tbInfo.verboseFlag = verboseFlag;
/* Store the stat info for the tarball's file, so
* can avoid including the tarball into itself.... */
if (fstat(tbInfo.tarFd, &tbInfo.statBuf) < 0)
- bb_error_msg_and_die(bb_msg_io_error, tarName);
+ bb_perror_msg_and_die("Couldnt stat tar file");
#ifdef CONFIG_FEATURE_TAR_GZIP
if (gzip) {
while (1) {
char buf;
- int n = read(gzipStatusPipe[0], &buf, 1);
+ int n = bb_full_read(gzipStatusPipe[0], &buf, 1);
if (n == 0 && vfork_exec_errno != 0) {
errno = vfork_exec_errno;
#endif /* tar_create */
#ifdef CONFIG_FEATURE_TAR_EXCLUDE
-static llist_t *append_file_list_to_list(const char *filename, llist_t *list)
+static llist_t *append_file_list_to_list(llist_t *list)
{
- FILE *src_stream = bb_xfopen(filename, "r");
+ FILE *src_stream;
+ llist_t *cur = list;
+ llist_t *tmp;
char *line;
+ llist_t *newlist = NULL;
+
+ while(cur) {
+ src_stream = bb_xfopen(cur->data, "r");
+ tmp = cur;
+ cur = cur->link;
+ free(tmp);
while((line = bb_get_chomped_line_from_file(src_stream)) != NULL) {
- list = llist_add_to(list, line);
+ newlist = llist_add_to(newlist, line);
}
fclose(src_stream);
+ }
+ return newlist;
+}
+#endif
- return (list);
+#ifdef CONFIG_FEATURE_TAR_COMPRESS
+static char get_header_tar_Z(archive_handle_t *archive_handle)
+{
+ /* Cant lseek over pipe's */
+ archive_handle->seek = seek_by_char;
+
+ /* do the decompression, and cleanup */
+ if ((bb_xread_char(archive_handle->src_fd) != 0x1f) || (bb_xread_char(archive_handle->src_fd) != 0x9d)) {
+ bb_error_msg_and_die("Invalid magic");
+ }
+
+ archive_handle->src_fd = open_transformer(archive_handle->src_fd, uncompress);
+ archive_handle->offset = 0;
+ while (get_header_tar(archive_handle) == EXIT_SUCCESS);
+
+ /* Can only do one file at a time */
+ return(EXIT_FAILURE);
}
#endif
+static const char tar_options[]="ctxjT:X:C:f:OpvzkZ";
+
#define CTX_CREATE 1
#define CTX_TEST 2
#define CTX_EXTRACT 4
+#define TAR_OPT_BZIP2 8
+#define TAR_OPT_INCLUDE 16
+#define TAR_OPT_EXCLUDE 32
+#define TAR_OPT_BASEDIR 64
+#define TAR_OPT_ARNAME 128
+#define TAR_OPT_2STDOUT 256
+#define TAR_OPT_P 512
+#define TAR_OPT_VERBOSE 1024
+#define TAR_OPT_GZIP 2048
+#define TAR_OPT_KEEP_OLD 4096
+#define TAR_OPT_UNCOMPRESS 8192
int tar_main(int argc, char **argv)
{
/* Prepend '-' to the first argument if required */
if (argv[1][0] != '-') {
- char *tmp = xmalloc(strlen(argv[1]) + 2);
- tmp[0] = '-';
- strcpy(tmp + 1, argv[1]);
+ char *tmp;
+
+ bb_xasprintf(&tmp, "-%s", argv[1]);
argv[1] = tmp;
}
/* Initialise default values */
tar_handle = init_handle();
- tar_handle->flags = ARCHIVE_CREATE_LEADING_DIRS;
-
- while ((opt = getopt(argc, argv, "cjtxT:X:C:f:Opvz")) != -1) {
- switch (opt) {
- /* One and only one of these is required */
-#ifdef CONFIG_FEATURE_TAR_CREATE
- case 'c':
- ctx_flag |= CTX_CREATE;
- break;
-#endif
- case 't':
- ctx_flag |= CTX_TEST;
- if ((tar_handle->action_header == header_list) ||
- (tar_handle->action_header == header_verbose_list)) {
- tar_handle->action_header = header_verbose_list;
- } else {
- tar_handle->action_header = header_list;
- }
- break;
- case 'x':
- ctx_flag |= CTX_EXTRACT;
+ tar_handle->flags = ARCHIVE_CREATE_LEADING_DIRS | ARCHIVE_PRESERVE_DATE | ARCHIVE_EXTRACT_UNCONDITIONAL;
+
+ bb_opt_complementaly = "c~tx:t~cx:x~ct:X*";
+ opt = bb_getopt_ulflags(argc, argv, tar_options,
+ NULL, /* T: arg is ignored by default
+ a list is an include list */
+ &(tar_handle->reject),
+ &base_dir, /* Change to dir <optarg> */
+ &tar_filename); /* archive filename */
+ /* Check one and only one context option was given */
+ if(opt & 0x80000000UL)
+ bb_show_usage();
+ ctx_flag = opt & (CTX_CREATE | CTX_TEST | CTX_EXTRACT);
+ if(ctx_flag & CTX_TEST) {
+ if ((tar_handle->action_header == header_list) ||
+ (tar_handle->action_header == header_verbose_list)) {
+ tar_handle->action_header = header_verbose_list;
+ } else {
+ tar_handle->action_header = header_list;
+ }
+ }
+ if(ctx_flag & CTX_EXTRACT) {
+ if (tar_handle->action_data != data_extract_to_stdout)
tar_handle->action_data = data_extract_all;
- break;
+ }
+ if(opt & TAR_OPT_2STDOUT) {
+ /* To stdout */
+ tar_handle->action_data = data_extract_to_stdout;
+ }
+ if(opt & TAR_OPT_VERBOSE) {
+ if ((tar_handle->action_header == header_list) ||
+ (tar_handle->action_header == header_verbose_list))
+ {
+ tar_handle->action_header = header_verbose_list;
+ } else {
+ tar_handle->action_header = header_list;
+ }
+ }
+ if (opt & TAR_OPT_KEEP_OLD) {
+ tar_handle->flags &= ~ARCHIVE_EXTRACT_UNCONDITIONAL;
+ }
- /* These are optional */
- /* Exclude or Include files listed in <filename> */
-#ifdef CONFIG_FEATURE_TAR_EXCLUDE
- case 'X':
- tar_handle->reject =
- append_file_list_to_list(optarg, tar_handle->reject);
- break;
-#endif
- case 'T':
- /* by default a list is an include list */
- break;
- case 'C': /* Change to dir <optarg> */
- base_dir = optarg;
- break;
- case 'f': /* archive filename */
- tar_filename = optarg;
- break;
- case 'O': /* To stdout */
- tar_handle->action_data = data_extract_to_stdout;
- break;
- case 'p':
- tar_handle->flags |= ARCHIVE_PRESERVE_DATE;
- break;
- case 'v':
- if ((tar_handle->action_header == header_list) ||
- (tar_handle->action_header == header_verbose_list)) {
- tar_handle->action_header = header_verbose_list;
- } else {
- tar_handle->action_header = header_list;
- }
- break;
+ if(opt & TAR_OPT_GZIP) {
#ifdef CONFIG_FEATURE_TAR_GZIP
- case 'z':
- get_header_ptr = get_header_tar_gz;
- break;
+ get_header_ptr = get_header_tar_gz;
+#else
+ bb_show_usage();
#endif
+ }
+ if(opt & TAR_OPT_BZIP2) {
#ifdef CONFIG_FEATURE_TAR_BZIP2
- case 'j':
- get_header_ptr = get_header_tar_bz2;
- break;
+ get_header_ptr = get_header_tar_bz2;
+#else
+ bb_show_usage();
#endif
- default:
- bb_show_usage();
- }
}
-
- /* Check one and only one context option was given */
- if ((ctx_flag != CTX_CREATE) && (ctx_flag != CTX_TEST) && (ctx_flag != CTX_EXTRACT)) {
+ if(opt & TAR_OPT_UNCOMPRESS) {
+#ifdef CONFIG_FEATURE_TAR_COMPRESS
+ get_header_ptr = get_header_tar_Z;
+#else
bb_show_usage();
+#endif
+ }
+ if(opt & TAR_OPT_EXCLUDE) {
+#ifdef CONFIG_FEATURE_TAR_EXCLUDE
+ tar_handle->reject = append_file_list_to_list(tar_handle->reject);
+#else
+ bb_show_usage();
+#endif
}
-
/* Check if we are reading from stdin */
if ((argv[optind]) && (*argv[optind] == '-')) {
/* Default is to read from stdin, so just skip to next arg */
tar_handle->filter = filter_accept_reject_list;
}
+ /* Open the tar file */
+ {
+ FILE *tar_stream;
+ int flags;
+
+#ifdef CONFIG_FEATURE_TAR_CREATE
+ if (ctx_flag == CTX_CREATE) {
+ tar_stream = stdout;
+ flags = O_WRONLY | O_CREAT | O_EXCL;
+ unlink(tar_filename);
+ } else
+#endif
+ {
+ tar_stream = stdin;
+ flags = O_RDONLY;
+ }
+
+ if ((tar_filename[0] == '-') && (tar_filename[1] == '\0')) {
+ tar_handle->src_fd = fileno(tar_stream);
+ tar_handle->seek = seek_by_char;
+ } else {
+ tar_handle->src_fd = bb_xopen(tar_filename, flags);
+ }
+ }
+
+ if ((base_dir) && (chdir(base_dir))) {
+ bb_perror_msg_and_die("Couldnt chdir to %s", base_dir);
+ }
+
#ifdef CONFIG_FEATURE_TAR_CREATE
/* create an archive */
if (ctx_flag == CTX_CREATE) {
gzipFlag = TRUE;
}
# endif /* CONFIG_FEATURE_TAR_GZIP */
+# ifdef CONFIG_FEATURE_TAR_BZIP2
+ if (get_header_ptr == get_header_tar_bz2) {
+ bb_error_msg_and_die("Creating bzip2 compressed archives is not currently supported.");
+ }
+# endif /* CONFIG_FEATURE_TAR_BZIP2 */
- if (tar_handle->action_header == header_verbose_list) {
+ if ((tar_handle->action_header == header_list) ||
+ (tar_handle->action_header == header_verbose_list)) {
verboseFlag = TRUE;
}
- writeTarFile(tar_filename, verboseFlag, tar_handle->accept,
+ writeTarFile(tar_handle->src_fd, verboseFlag, tar_handle->accept,
tar_handle->reject, gzipFlag);
} else
#endif /* CONFIG_FEATURE_TAR_CREATE */
{
- if ((tar_filename[0] == '-') && (tar_filename[1] == '\0')) {
- tar_handle->src_fd = fileno(stdin);
- tar_handle->seek = seek_by_char;
- } else {
- tar_handle->src_fd = bb_xopen(tar_filename, O_RDONLY);
- }
-
- if ((base_dir) && (chdir(base_dir))) {
- bb_perror_msg_and_die("Couldnt chdir");
- }
-
while (get_header_ptr(tar_handle) == EXIT_SUCCESS);
/* Ckeck that every file that should have been extracted was */
projects / oweals / busybox.git / blobdiff