libtar - Fix extraction of hardlinks to use the prefix
Change-Id: I116982ceed722364406b99fb08bc6943afa0390a
diff --git a/libtar/extract.c b/libtar/extract.c
index 8860e50..620513c 100644
--- a/libtar/extract.c
+++ b/libtar/extract.c
@@ -89,7 +89,7 @@
/* switchboard */
int
-tar_extract_file(TAR *t, char *realname)
+tar_extract_file(TAR *t, char *realname, char *prefix)
{
int i;
char *lnp;
@@ -115,7 +115,7 @@
}
else if (TH_ISLNK(t)) {
printf("link\n");
- i = tar_extract_hardlink(t, realname);
+ i = tar_extract_hardlink(t, realname, prefix);
}
else if (TH_ISSYM(t)) {
printf("sym\n");
@@ -300,7 +300,7 @@
/* hardlink */
int
-tar_extract_hardlink(TAR * t, char *realname)
+tar_extract_hardlink(TAR * t, char *realname, char *prefix)
{
char *filename;
char *linktgt = NULL;
@@ -325,7 +325,8 @@
}
else
linktgt = th_get_linkname(t);
-
+ char *newtgt = strdup(linktgt);
+ sprintf(linktgt, "%s/%s", prefix, newtgt);
#ifdef DEBUG
printf(" ==> extracting: %s (link to %s)\n", filename, linktgt);
#endif
diff --git a/libtar/libtar.h b/libtar/libtar.h
index 7a8f332..f2f423b 100644
--- a/libtar/libtar.h
+++ b/libtar/libtar.h
@@ -218,11 +218,11 @@
/***** extract.c ***********************************************************/
/* sequentially extract next file from t */
-int tar_extract_file(TAR *t, char *realname);
+int tar_extract_file(TAR *t, char *realname, char *prefix);
/* extract different file types */
int tar_extract_dir(TAR *t, char *realname);
-int tar_extract_hardlink(TAR *t, char *realname);
+int tar_extract_hardlink(TAR *t, char *realname, char *prefix);
int tar_extract_symlink(TAR *t, char *realname);
int tar_extract_chardev(TAR *t, char *realname);
int tar_extract_blockdev(TAR *t, char *realname);
diff --git a/libtar/wrapper.c b/libtar/wrapper.c
index 7cd8ed1..4d82162 100644
--- a/libtar/wrapper.c
+++ b/libtar/wrapper.c
@@ -44,7 +44,7 @@
snprintf(buf, sizeof(buf), "%s/%s", prefix, filename);
else
strlcpy(buf, filename, sizeof(buf));
- if (tar_extract_file(t, filename) != 0)
+ if (tar_extract_file(t, filename, prefix) != 0)
return -1;
}
@@ -86,7 +86,7 @@
continue;
}
*/
- if (tar_extract_file(t, buf) != 0)
+ if (tar_extract_file(t, buf, prefix) != 0)
return -1;
}
return (i == 1 ? 0 : -1);
diff --git a/twrpTar.cpp b/twrpTar.cpp
index 0bf76e5..159c1d1 100644
--- a/twrpTar.cpp
+++ b/twrpTar.cpp
@@ -122,7 +122,7 @@
int status;
pid_t pid;
if ((pid = fork()) == -1) {
- LOGI("create tar failed to fork.\n");
+ LOGI("extract tar failed to fork.\n");
return -1;
}
if (pid == 0) {
@@ -144,7 +144,7 @@
else if (WIFEXITED(status) != 0)
LOGI("Tar extraction successful\n");
else {
- LOGI("Tar creation failed\n");
+ LOGI("Tar extraction failed\n");
return -1;
}
}