Don't use void * to pass pointers of known type

3 files changed, 37 insertions, 28 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 3b0ced7d1..c29955b3b 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -212,9 +212,19 @@ char *xreadlink(const char *path);
 char *concat_path_file(const char *path, const char *filename);
 char *last_char_is(const char *s, int c);
 
-void *get_header_ar(FILE *in_file);
-void *get_header_cpio(FILE *src_stream);
-void *get_header_tar(FILE *tar_stream);
+typedef struct file_headers_s {
+        char *name;
+        char *link_name;
+        off_t size;
+        uid_t uid;
+        gid_t gid;
+        mode_t mode;
+        time_t mtime;
+        dev_t device;
+} file_header_t;
+file_header_t *get_header_ar(FILE *in_file);
+file_header_t *get_header_cpio(FILE *src_stream);
+file_header_t *get_header_tar(FILE *tar_stream);
 
 enum extract_functions_e {
         extract_verbose_list = 1,
@@ -229,7 +239,7 @@ enum extract_functions_e {
         extract_unconditional = 512,
         extract_create_leading_dirs = 1024
 };
-char *unarchive(FILE *src_stream, void *(*get_header)(FILE *),
+char *unarchive(FILE *src_stream, file_header_t *(*get_header)(FILE *),
         const int extract_function, const char *prefix, char **extract_names);
 char *deb_extract(const char *package_filename, FILE *out_stream, const int extract_function,
         const char *prefix, const char *filename);
diff --git a/libbb/libbb.h b/libbb/libbb.h
index 3b0ced7d1..c29955b3b 100644
--- a/libbb/libbb.h
+++ b/libbb/libbb.h
@@ -212,9 +212,19 @@ char *xreadlink(const char *path);
 char *concat_path_file(const char *path, const char *filename);
 char *last_char_is(const char *s, int c);
 
-void *get_header_ar(FILE *in_file);
-void *get_header_cpio(FILE *src_stream);
-void *get_header_tar(FILE *tar_stream);
+typedef struct file_headers_s {
+        char *name;
+        char *link_name;
+        off_t size;
+        uid_t uid;
+        gid_t gid;
+        mode_t mode;
+        time_t mtime;
+        dev_t device;
+} file_header_t;
+file_header_t *get_header_ar(FILE *in_file);
+file_header_t *get_header_cpio(FILE *src_stream);
+file_header_t *get_header_tar(FILE *tar_stream);
 
 enum extract_functions_e {
         extract_verbose_list = 1,
@@ -229,7 +239,7 @@ enum extract_functions_e {
         extract_unconditional = 512,
         extract_create_leading_dirs = 1024
 };
-char *unarchive(FILE *src_stream, void *(*get_header)(FILE *),
+char *unarchive(FILE *src_stream, file_header_t *(*get_header)(FILE *),
         const int extract_function, const char *prefix, char **extract_names);
 char *deb_extract(const char *package_filename, FILE *out_stream, const int extract_function,
         const char *prefix, const char *filename);
diff --git a/libbb/unarchive.c b/libbb/unarchive.c
index 4847aab6b..fe061ea12 100644
--- a/libbb/unarchive.c
+++ b/libbb/unarchive.c
@@ -27,18 +27,6 @@
 #include <utime.h>
 #include "libbb.h"
 
-typedef struct file_headers_s {
-        char *name;
-        char *link_name;
-        off_t size;
-        uid_t uid;
-        gid_t gid;
-        mode_t mode;
-        time_t mtime;
-        dev_t device;
-} file_header_t;
-
-
 extern void seek_sub_file(FILE *src_stream, const int count);
 extern char *extract_archive(FILE *src_stream, FILE *out_stream, const file_header_t *file_entry,
  const int function, const char *prefix);
@@ -223,7 +211,7 @@ char *extract_archive(FILE *src_stream, FILE *out_stream, const file_header_t *f
 #endif
 
 #ifdef L_unarchive
-char *unarchive(FILE *src_stream, void *(*get_headers)(FILE *),
+char *unarchive(FILE *src_stream, file_header_t *(*get_headers)(FILE *),
         const int extract_function, const char *prefix, char **extract_names)
 {
         file_header_t *file_entry;
@@ -232,7 +220,7 @@ char *unarchive(FILE *src_stream, void *(*get_headers)(FILE *),
         char *buffer = NULL;
 
         archive_offset = 0;
-        while ((file_entry = (file_header_t *) get_headers(src_stream)) != NULL) {
+        while ((file_entry = get_headers(src_stream)) != NULL) {
                 found = FALSE;
                 if (extract_names[0] != NULL) {
                         for(i = 0; extract_names[i] != 0; i++) {
@@ -253,7 +241,7 @@ char *unarchive(FILE *src_stream, void *(*get_headers)(FILE *),
 #endif
 
 #ifdef L_get_header_ar
-void *get_header_ar(FILE *src_stream)
+file_header_t *get_header_ar(FILE *src_stream)
 {
         file_header_t *typed;
         union {
@@ -347,7 +335,7 @@ struct hardlinks {
         struct hardlinks *next;
 };
 
-void *get_header_cpio(FILE *src_stream)
+file_header_t *get_header_cpio(FILE *src_stream)
 {
         file_header_t *cpio_entry = NULL;
         char cpio_header[110];
@@ -457,7 +445,7 @@ void *get_header_cpio(FILE *src_stream)
 #endif
 
 #ifdef L_get_header_tar
-void *get_header_tar(FILE *tar_stream)
+file_header_t *get_header_tar(FILE *tar_stream)
 {
         union {
                 unsigned char raw[512];
@@ -525,7 +513,8 @@ void *get_header_tar(FILE *tar_stream)
         tar_entry->gid   = strtol(tar.formated.gid, NULL, 8);
         tar_entry->size  = strtol(tar.formated.size, NULL, 8);
         tar_entry->mtime = strtol(tar.formated.mtime, NULL, 8);
-        tar_entry->link_name  = strlen(tar.formated.linkname) ? xstrdup(tar.formated.linkname) : NULL;
+        tar_entry->link_name  = strlen(tar.formated.linkname) ? 
+            xstrdup(tar.formated.linkname) : NULL;
         tar_entry->device = (strtol(tar.formated.devmajor, NULL, 8) << 8) +
                 strtol(tar.formated.devminor, NULL, 8);
 
@@ -534,8 +523,8 @@ void *get_header_tar(FILE *tar_stream)
 #endif
 
 #ifdef L_deb_extract
-char *deb_extract(const char *package_filename, FILE *out_stream, const int extract_function,
-        const char *prefix, const char *filename)
+char *deb_extract(const char *package_filename, FILE *out_stream, 
+        const int extract_function, const char *prefix, const char *filename)
 {
         FILE *deb_stream;
         FILE *uncompressed_stream = NULL;