#ifndef FIO_PARSE_PATTERN_H
#define FIO_PARSE_PATTERN_H
+/*
+ * The pattern is dynamically allocated, but that doesn't mean there
+ * are not limits. The network protocol has a limit of
+ * FIO_SERVER_MAX_CMD_MB and potentially two patterns must fit in there.
+ * There's also a need to verify the incoming data from the network and
+ * this provides a sensible check.
+ *
+ * 128MiB is an arbitrary limit that meets these criteria. The patterns
+ * tend to be truncated at the IO size anyway and IO sizes that large
+ * aren't terribly practical.
+ */
+#define MAX_PATTERN_SIZE (128 << 20)
+
/**
* Pattern format description. The input for 'parse_pattern'.
* Describes format with its name and callback, which should
const struct pattern_fmt_desc *desc;
};
-int parse_and_fill_pattern(const char *in, unsigned int in_len,
- char *out, unsigned int out_len,
- const struct pattern_fmt_desc *fmt_desc,
- struct pattern_fmt *fmt,
- unsigned int *fmt_sz_out);
+int parse_and_fill_pattern_alloc(const char *in, unsigned int in_len,
+ char **out, const struct pattern_fmt_desc *fmt_desc,
+ struct pattern_fmt *fmt, unsigned int *fmt_sz_out);
int paste_format_inplace(char *pattern, unsigned int pattern_len,
struct pattern_fmt *fmt, unsigned int fmt_sz,