3  * Elide and patch handling for 'fsverity setup'
19 /* An elision or a patch */
23 	bool patch;	/* false if elision, true if patch */  member
24 	u8 data[];	/* replacement data (if patch=true) */
27 /* Maximum supported patch size, in bytes */
57 	ext->patch = false;  in parse_elide_option()
66 /* Parse a --patch=OFFSET,PATCHFILE option */
89 		error_msg("patch file '%s' is empty", patchfile.name);  in parse_patch_option()
93 		error_msg("Patch file '%s' is too long.  Max patch size is %d bytes.",  in parse_patch_option()
100 	ext->patch = true;  in parse_patch_option()
110 	error_msg("Invalid --patch option: '%s'.  Must be formatted as OFFSET,PATCHFILE",  in parse_patch_option()
131  * Given the lists of --elide and --patch options, validate and load the
156 	/* Parse the --patch options */  in load_elisions_and_patches()
172 				  exts[j - 1]->patch ? "Patch" : "Elision",  in load_elisions_and_patches()
175 				  exts[j]->patch ? "patch" : "elision",  in load_elisions_and_patches()
210 				  exts[i]->patch ? "Patch" : "Elision",  in apply_elisions_and_patches()
225 		       exts[i]->patch ? "patch" : "elision",  in apply_elisions_and_patches()
231 		if (exts[i]->patch &&  in apply_elisions_and_patches()
257 		if (ext->patch) {  in total_elide_patch_ext_length()
269  * Append the elide and patch extensions (if any) to the given buffer.
281 		} patch;  in append_elide_patch_exts()  member
291 		if (ext->patch) {  in append_elide_patch_exts()
293 			u.patch.hdr.offset = cpu_to_le64(ext->offset);  in append_elide_patch_exts()
294 			ASSERT(ext->length <= sizeof(u.patch.data));  in append_elide_patch_exts()
295 			memcpy(u.patch.data, ext->data, ext->length);  in append_elide_patch_exts()
296 			extlen = sizeof(u.patch.hdr) + ext->length;  in append_elide_patch_exts()