Implement first working draft of CRC patching

include/patchelfcrc/elfpatch.h

@@ -4,6 +4,7 @@
 #include <stdint.h>
 #include <patchelfcrc/crc.h>
 #include <stdbool.h>
+#include <linklist-lib/singly-linked-list.h>
 
 typedef struct elfpatch elfpatch_handle_t;
 
@@ -13,6 +14,10 @@ enum granularity {
     GRANULARITY_32BIT = 32,
 };
 
+enum crc_format {
+    FORMAT_BARE = 0,
+    FORMAT_STRUCT,
+};
 
 elfpatch_handle_t *elf_patch_open(const char *path, bool readonly);
 
@@ -28,4 +33,17 @@ int elf_patch_compute_crc_over_section(elfpatch_handle_t *ep, const char *sectio
 
 void elf_patch_close_and_free(elfpatch_handle_t *ep);
 
+/**
+ * @brief Write CRCs to output section. This will have no effect, if file is opened read onyl
+ * @param ep Elf patch object
+ * @param[in] section Section name to place CRCs in
+ * @param[in] section_name_list The list of sections the data belongs to
+ * @param[in] crcs CRCs. Must be of the same lenght as the \p section_name_list
+ * @return 0 Success
+ * @return -1000 Parameter error
+ * @return -1 internal error
+ */
+int elf_patch_write_crcs_to_section(elfpatch_handle_t *ep, const char *section, const SlList *section_name_list,
+                    const uint32_t *crcs, uint8_t crc_size_bits, uint32_t start_magic, uint32_t end_magic,
+                    bool check_start_magic, bool check_end_magic, enum crc_format format, bool little_endian);
 #endif /* _ELFPATCH_H_ */

include/patchelfcrc/reporting.h

@@ -3,7 +3,7 @@
 
 #include <stdbool.h>
 
-#define print_err(fmt, ...) fprintf(stderr, (fmt), ## __VA_ARGS__);
+#define print_err(fmt, ...) fprintf(stderr, "[ERR] " fmt, ## __VA_ARGS__);
 
 void print_debug(const char *fmt, ...);