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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/scripts/mod/sumversion.c
..
..
@@ -258,9 +258,8 @@
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 	char *file;
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259
 	unsigned long i, len;
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260
 
261
-	file = grab_file(fname, &len);
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-	if (!file)
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-		return 0;
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+	file = read_text_file(fname);
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+	len = strlen(file);
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263
 
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 	for (i = 0; i < len; i++) {
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 		/* Collapse and ignore \ and CR. */
..
..
@@ -287,7 +286,7 @@
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286
 
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 		add_char(file[i], md);
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 	}
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-	release_file(file, len);
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+	free(file);
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 	return 1;
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 }
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 /* Check whether the file is a static library or not */
..
..
@@ -304,9 +303,8 @@
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  * to figure out source files. */
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 static int parse_source_files(const char *objfile, struct md4_ctx *md)
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 {
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-	char *cmd, *file, *line, *dir;
306
+	char *cmd, *file, *line, *dir, *pos;
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 	const char *base;
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-	unsigned long flen, pos = 0;
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308
 	int dirlen, ret = 0, check_files = 0;
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309
 
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 	cmd = NOFAIL(malloc(strlen(objfile) + sizeof("..cmd")));
..
..
@@ -324,14 +322,12 @@
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 	strncpy(dir, objfile, dirlen);
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 	dir[dirlen] = '\0';
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324
 
327
-	file = grab_file(cmd, &flen);
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-	if (!file) {
329
-		warn("could not find %s for %s\n", cmd, objfile);
330
-		goto out;
331
-	}
325
+	file = read_text_file(cmd);
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+
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+	pos = file;
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328
 
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 	/* Sum all files in the same dir or subdirs. */
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-	while ((line = get_next_line(&pos, file, flen)) != NULL) {
330
+	while ((line = get_line(&pos))) {
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331
 		char* p = line;
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332
 
337
333
 		if (strncmp(line, "source_", sizeof("source_")-1) == 0) {
..
..
@@ -382,8 +378,7 @@
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 	/* Everyone parsed OK */
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 	ret = 1;
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 out_file:
385
-	release_file(file, flen);
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-out:
381
+	free(file);
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382
 	free(dir);
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383
 	free(cmd);
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384
 	return ret;
..
..
@@ -392,121 +387,38 @@
392
387
 /* Calc and record src checksum. */
393
388
 void get_src_version(const char *modname, char sum[], unsigned sumlen)
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389
 {
395
-	void *file;
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-	unsigned long len;
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+	char *buf, *pos, *firstline;
397
391
 	struct md4_ctx md;
398
-	char *sources, *end, *fname;
399
-	const char *basename;
392
+	char *fname;
400
393
 	char filelist[PATH_MAX + 1];
401
-	char *modverdir = getenv("MODVERDIR");
394
+	int postfix_len = 1;
402
395
 
403
-	if (!modverdir)
404
-		modverdir = ".";
396
+	if (strends(modname, ".lto.o"))
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+		postfix_len = 5;
405
398
 
406
-	/* Source files for module are in .tmp_versions/modname.mod,
407
-	   after the first line. */
408
-	if (strrchr(modname, '/'))
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-		basename = strrchr(modname, '/') + 1;
410
-	else
411
-		basename = modname;
412
-	snprintf(filelist, sizeof(filelist), "%s/%.*s.mod", modverdir,
413
-		(int) strlen(basename) - 2, basename);
399
+	/* objects for a module are listed in the first line of *.mod file. */
400
+	snprintf(filelist, sizeof(filelist), "%.*smod",
401
+		 (int)strlen(modname) - postfix_len, modname);
414
402
 
415
-	file = grab_file(filelist, &len);
416
-	if (!file)
417
-		/* not a module or .mod file missing - ignore */
418
-		return;
403
+	buf = read_text_file(filelist);
419
404
 
420
-	sources = strchr(file, '\n');
421
-	if (!sources) {
422
-		warn("malformed versions file for %s\n", modname);
423
-		goto release;
424
-	}
425
-
426
-	sources++;
427
-	end = strchr(sources, '\n');
428
-	if (!end) {
405
+	pos = buf;
406
+	firstline = get_line(&pos);
407
+	if (!firstline) {
429
408
 		warn("bad ending versions file for %s\n", modname);
430
-		goto release;
409
+		goto free;
431
410
 	}
432
-	*end = '\0';
433
411
 
434
412
 	md4_init(&md);
435
-	while ((fname = strsep(&sources, " ")) != NULL) {
413
+	while ((fname = strsep(&firstline, " "))) {
436
414
 		if (!*fname)
437
415
 			continue;
438
416
 		if (!(is_static_library(fname)) &&
439
417
 				!parse_source_files(fname, &md))
440
-			goto release;
418
+			goto free;
441
419
 	}
442
420
 
443
421
 	md4_final_ascii(&md, sum, sumlen);
444
-release:
445
-	release_file(file, len);
446
-}
447
-
448
-static void write_version(const char *filename, const char *sum,
449
-			  unsigned long offset)
450
-{
451
-	int fd;
452
-
453
-	fd = open(filename, O_RDWR);
454
-	if (fd < 0) {
455
-		warn("changing sum in %s failed: %s\n",
456
-			filename, strerror(errno));
457
-		return;
458
-	}
459
-
460
-	if (lseek(fd, offset, SEEK_SET) == (off_t)-1) {
461
-		warn("changing sum in %s:%lu failed: %s\n",
462
-			filename, offset, strerror(errno));
463
-		goto out;
464
-	}
465
-
466
-	if (write(fd, sum, strlen(sum)+1) != strlen(sum)+1) {
467
-		warn("writing sum in %s failed: %s\n",
468
-			filename, strerror(errno));
469
-		goto out;
470
-	}
471
-out:
472
-	close(fd);
473
-}
474
-
475
-static int strip_rcs_crap(char *version)
476
-{
477
-	unsigned int len, full_len;
478
-
479
-	if (strncmp(version, "$Revision", strlen("$Revision")) != 0)
480
-		return 0;
481
-
482
-	/* Space for version string follows. */
483
-	full_len = strlen(version) + strlen(version + strlen(version) + 1) + 2;
484
-
485
-	/* Move string to start with version number: prefix will be
486
-	 * $Revision$ or $Revision: */
487
-	len = strlen("$Revision");
488
-	if (version[len] == ':' || version[len] == '$')
489
-		len++;
490
-	while (isspace(version[len]))
491
-		len++;
492
-	memmove(version, version+len, full_len-len);
493
-	full_len -= len;
494
-
495
-	/* Preserve up to next whitespace. */
496
-	len = 0;
497
-	while (version[len] && !isspace(version[len]))
498
-		len++;
499
-	memmove(version + len, version + strlen(version),
500
-		full_len - strlen(version));
501
-	return 1;
502
-}
503
-
504
-/* Clean up RCS-style version numbers. */
505
-void maybe_frob_rcs_version(const char *modfilename,
506
-			    char *version,
507
-			    void *modinfo,
508
-			    unsigned long version_offset)
509
-{
510
-	if (strip_rcs_crap(version))
511
-		write_version(modfilename, version, version_offset);
422
+free:
423
+	free(buf);
512
424
 }