Use fstat() instead of fseeko() and ftello()

1 files changed, 8 insertions, 5 deletions

diff --git a/src/libirecovery.c b/src/libirecovery.c
index cd9b81e..fa4230f 100644
--- a/src/libirecovery.c
+++ b/src/libirecovery.c
@@ -28,6 +28,7 @@
 #include <string.h>
 #include <ctype.h>
 #include <unistd.h>
+#include <sys/stat.h>
 
 #ifndef WIN32
 #ifndef HAVE_IOKIT
@@ -1637,17 +1638,19 @@ IRECV_API irecv_error_t irecv_send_file(irecv_client_t client, const char* filen
                 return IRECV_E_FILE_NOT_FOUND;
         }
 
-        fseeko(file, 0, SEEK_END);
-        long length = ftello(file);
-        fseeko(file, 0, SEEK_SET);
+        struct stat fst;
+        if (fstat(fileno(file), &fst) < 0) {
+                return IRECV_E_UNKNOWN_ERROR;
+        }
+        size_t length = fst.st_size;
 
-        char* buffer = (char*) malloc(length);
+        char* buffer = (char*)malloc(length);
         if (buffer == NULL) {
                 fclose(file);
                 return IRECV_E_OUT_OF_MEMORY;
         }
 
-        long bytes = fread(buffer, 1, length, file);
+        size_t bytes = fread(buffer, 1, length, file);
         fclose(file);
 
         if (bytes != length) {