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-rw-r--r--archival/cpio.c20
-rw-r--r--archival/libunarchive/data_extract_all.c25
-rw-r--r--archival/libunarchive/get_header_cpio.c42
-rw-r--r--include/unarchive.h1
4 files changed, 45 insertions, 43 deletions
diff --git a/archival/cpio.c b/archival/cpio.c
index 111807c..beee83d 100644
--- a/archival/cpio.c
+++ b/archival/cpio.c
@@ -40,8 +40,8 @@ extern int cpio_main(int argc, char **argv)
archive_handle = init_handle();
archive_handle->src_fd = fileno(stdin);
archive_handle->seek = seek_by_char;
- archive_handle->action_header = header_list;
-
+ archive_handle->flags = ARCHIVE_EXTRACT_NEWER | ARCHIVE_PRESERVE_DATE;
+
while ((opt = getopt(argc, argv, "idmuvtF:")) != -1) {
switch (opt) {
case 'i': /* extract */
@@ -50,17 +50,28 @@ extern int cpio_main(int argc, char **argv)
case 'd': /* create _leading_ directories */
archive_handle->flags |= ARCHIVE_CREATE_LEADING_DIRS;
break;
+#if 0
case 'm': /* preserve modification time */
archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
break;
+#endif
case 'v': /* verbosly list files */
- archive_handle->action_header = header_verbose_list;
+ if (archive_handle->action_header == header_list) {
+ archive_handle->action_header = header_verbose_list;
+ } else {
+ archive_handle->action_header = header_list;
+ }
break;
case 'u': /* unconditional */
archive_handle->flags |= ARCHIVE_EXTRACT_UNCONDITIONAL;
+ archive_handle->flags &= ~ARCHIVE_EXTRACT_NEWER;
break;
case 't': /* list files */
- archive_handle->action_header = header_list;
+ if (archive_handle->action_header == header_list) {
+ archive_handle->action_header = header_verbose_list;
+ } else {
+ archive_handle->action_header = header_list;
+ }
break;
case 'F':
archive_handle->src_fd = bb_xopen(optarg, O_RDONLY);
@@ -81,4 +92,3 @@ extern int cpio_main(int argc, char **argv)
return(EXIT_SUCCESS);
}
-
diff --git a/archival/libunarchive/data_extract_all.c b/archival/libunarchive/data_extract_all.c
index c6ace2c..05bd2f0 100644
--- a/archival/libunarchive/data_extract_all.c
+++ b/archival/libunarchive/data_extract_all.c
@@ -39,6 +39,31 @@ extern void data_extract_all(archive_handle_t *archive_handle)
free(name);
}
+ /* Check if the file already exists */
+ if (archive_handle->flags & ARCHIVE_EXTRACT_UNCONDITIONAL) {
+ /* Remove the existing entry if it exists */
+ if ((unlink(file_header->name) == -1) && (errno != ENOENT)) {
+ bb_perror_msg_and_die("Couldnt remove old file");
+ }
+ }
+ else if (archive_handle->flags & ARCHIVE_EXTRACT_NEWER) {
+ /* Remove the existing entry if its older than the extracted entry */
+ struct stat statbuf;
+ if ((lstat(file_header->name, &statbuf) == -1) && (errno != ENOENT)) {
+ bb_perror_msg_and_die("Couldnt stat old file");
+ }
+ if (statbuf.st_mtime <= file_header->mtime) {
+ if (!(archive_handle->flags & ARCHIVE_EXTRACT_QUIET)) {
+ bb_error_msg("%s not created: newer or same age file exists", file_header->name);
+ }
+ data_skip(archive_handle);
+ return;
+ }
+ if ((unlink(file_header->name) == -1) && (errno != ENOENT)) {
+ bb_perror_msg_and_die("Couldnt remove old file");
+ }
+ }
+
/* Handle hard links seperately */
if (!S_ISLNK(file_header->mode) && (file_header->link_name) && (file_header->size == 0)) {
/* hard link */
diff --git a/archival/libunarchive/get_header_cpio.c b/archival/libunarchive/get_header_cpio.c
index 975e2a4..25fdc06 100644
--- a/archival/libunarchive/get_header_cpio.c
+++ b/archival/libunarchive/get_header_cpio.c
@@ -36,7 +36,6 @@ extern char get_header_cpio(archive_handle_t *archive_handle)
int namesize;
char dummy[16];
int major, minor, nlink, inode;
- char extract_flag;
if (pending_hardlinks) { /* Deal with any pending hardlinks */
hardlinks_t *tmp;
@@ -71,17 +70,7 @@ extern char get_header_cpio(archive_handle_t *archive_handle)
}
archive_handle->offset += 110;
- if (strncmp(&cpio_header[0], "07070", 5) != 0) {
- printf("cpio header is %x-%x-%x-%x-%x\n",
- cpio_header[0],
- cpio_header[1],
- cpio_header[2],
- cpio_header[3],
- cpio_header[4]);
- bb_error_msg_and_die("Unsupported cpio format");
- }
-
- if ((cpio_header[5] != '1') && (cpio_header[5] != '2')) {
+ if ((strncmp(&cpio_header[0], "07070", 5) != 0) || ((cpio_header[5] != '1') && (cpio_header[5] != '2'))) {
bb_error_msg_and_die("Unsupported cpio format, use newc or crc");
}
@@ -154,36 +143,13 @@ extern char get_header_cpio(archive_handle_t *archive_handle)
}
file_header->device = (major << 8) | minor;
- extract_flag = FALSE;
if (archive_handle->filter(archive_handle) == EXIT_SUCCESS) {
- struct stat statbuf;
-
- extract_flag = TRUE;
-
- /* Check if the file already exists */
- if (lstat (file_header->name, &statbuf) == 0) {
- if ((archive_handle->flags & ARCHIVE_EXTRACT_UNCONDITIONAL) || (statbuf.st_mtime < file_header->mtime)) {
- /* Remove file if flag set or its older than the file to be extracted */
- if (unlink(file_header->name) == -1) {
- bb_perror_msg_and_die("Couldnt remove old file");
- }
- } else {
- if (! archive_handle->flags & ARCHIVE_EXTRACT_QUIET) {
- bb_error_msg("%s not created: newer or same age file exists", file_header->name);
- }
- extract_flag = FALSE;
- }
- }
- archive_handle->action_header(file_header);
- }
-
- archive_handle->action_header(file_header);
- if (extract_flag) {
archive_handle->action_data(archive_handle);
+ archive_handle->action_header(archive_handle->file_header);
} else {
- data_skip(archive_handle);
+ data_skip(archive_handle);
}
+
archive_handle->offset += file_header->size;
return (EXIT_SUCCESS);
}
-
diff --git a/include/unarchive.h b/include/unarchive.h
index 8396f87..1c4e851 100644
--- a/include/unarchive.h
+++ b/include/unarchive.h
@@ -5,6 +5,7 @@
#define ARCHIVE_CREATE_LEADING_DIRS 2
#define ARCHIVE_EXTRACT_UNCONDITIONAL 4
#define ARCHIVE_EXTRACT_QUIET 8
+#define ARCHIVE_EXTRACT_NEWER 16
#include <sys/types.h>
#include <stdio.h>