make compressed help code NOMMU- and NOFORK-friendly -

no forking anymore, bunzip2 unpack routine now does all it in memory.

2 files changed, 8 insertions, 2 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 6fff441c5..2be13891c 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -403,9 +403,10 @@ extern char *xasprintf(const char *format, ...) __attribute__ ((format (printf,
 
 /* dmalloc will redefine these to it's own implementation. It is safe
  * to have the prototypes here unconditionally.  */
+extern void *malloc_or_warn(size_t size);
 extern void *xmalloc(size_t size);
-extern void *xrealloc(void *old, size_t size);
 extern void *xzalloc(size_t size);
+extern void *xrealloc(void *old, size_t size);
 
 extern ssize_t safe_read(int fd, void *buf, size_t count);
 extern ssize_t full_read(int fd, void *buf, size_t count);
@@ -862,7 +863,7 @@ void md5_begin(md5_ctx_t *ctx);
 void md5_hash(const void *data, size_t length, md5_ctx_t *ctx);
 void *md5_end(void *resbuf, md5_ctx_t *ctx);
 
-uint32_t *crc32_filltable(int endian);
+uint32_t *crc32_filltable(uint32_t *tbl256, int endian);
 
 
 enum {	/* DO NOT CHANGE THESE VALUES!  cp.c, mv.c, install.c depend on them. */
diff --git a/include/unarchive.h b/include/unarchive.h
index 36b56a925..8aa90becc 100644
--- a/include/unarchive.h
+++ b/include/unarchive.h
@@ -102,6 +102,11 @@ extern const llist_t *find_list_entry(const llist_t *list, const char *filename)
 extern const llist_t *find_list_entry2(const llist_t *list, const char *filename);
 
 extern USE_DESKTOP(long long) int uncompressStream(int src_fd, int dst_fd);
+/* A bit of bunzip2 internals are exposed for compressed help support: */
+typedef struct bunzip_data bunzip_data;
+int start_bunzip(bunzip_data **bdp, int in_fd, const unsigned char *inbuf, int len);
+int read_bunzip(bunzip_data *bd, char *outbuf, int len);
+void dealloc_bunzip(bunzip_data *bd);
 
 typedef struct inflate_unzip_result {
 	off_t bytes_out;