Check for IO stream failures in various format's truncate/seek operations
[asterisk/asterisk.git] / formats / format_g729.c
index 0429777..477883f 100644 (file)
@@ -113,10 +113,19 @@ static int g729_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
 
 static int g729_trunc(struct ast_filestream *fs)
 {
-       /* Truncate file to current length */
-       if (ftruncate(fileno(fs->f), ftello(fs->f)) < 0)
+       int fd;
+       off_t cur;
+
+       if ((fd = fileno(fs->f)) < 0) {
+               ast_log(AST_LOG_WARNING, "Unable to determine file descriptor for g729 filestream %p: %s\n", fs, strerror(errno));
                return -1;
-       return 0;
+       }
+       if ((cur = ftello(fs->f) < 0)) {
+               ast_log(AST_LOG_WARNING, "Unable to determine current position in g729 filestream %p: %s\n", fs, strerror(errno));
+               return -1;
+       }
+       /* Truncate file to current length */
+       return ftruncate(fd, cur);
 }
 
 static off_t g729_tell(struct ast_filestream *fs)