예제 #1
0
static void parse_device_table(FILE * file)
{
	char *line;
	size_t length = 256;
	int len = 0;

	/* Looks ok so far.  The general plan now is to read in one
	 * line at a time, check for leading comment delimiters ('#'),
	 * then try and parse the line as a device table.  If we fail
	 * to parse things, try and help the poor fool to fix their
	 * device table with a useful error msg... */

	if((line = (char *)malloc(length)) == NULL) {
		fclose(file);
		return;
	}

	while ((len = getline(&line, &length, file)) != -1) {
		/* First trim off any whitespace */

		/* trim trailing whitespace */
		while (len > 0 && isspace(line[len - 1]))
			line[--len] = '\0';

		/* trim leading whitespace */
		memmove(line, &line[strspn(line, " \n\r\t\v")], len + 1);

		/* If this is NOT a comment line, try to interpret it */
		if (*line != '#') interpret_table_entry(line);
	}
	if (line) free(line);

	fclose(file);
}
예제 #2
0
파일: mkfs.jffs2.c 프로젝트: jhbsz/102
static int parse_device_table(struct filesystem_entry *root, FILE * file)
{
	char *line;
	int status = 0;
	size_t length = 0;

	/* Turn off squash, since we must ensure that values
	 * entered via the device table are not squashed */
	squash_uids = 0;
	squash_perms = 0;

	/* Looks ok so far.  The general plan now is to read in one
	 * line at a time, check for leading comment delimiters ('#'),
	 * then try and parse the line as a device table.  If we fail
	 * to parse things, try and help the poor fool to fix their
	 * device table with a useful error msg... */
	line = NULL;
	while (getline(&line, &length, file) != -1) {
		/* First trim off any whitespace */
		int len = strlen(line);

		/* trim trailing whitespace */
		while (len > 0 && isspace(line[len - 1]))
			line[--len] = '\0';
		/* trim leading whitespace */
		memmove(line, &line[strspn(line, " \n\r\t\v")], len);

		/* How long are we after trimming? */
		len = strlen(line);

		/* If this is NOT a comment line, try to interpret it */
		if (len && *line != '#') {
			if (interpret_table_entry(root, line))
				status = 1;
		}

		free(line);
		line = NULL;
	}
	fclose(file);

	return status;
}
/**
 * parse_devtable - parse the device table.
 * @tbl_file: device table file name
 *
 * This function parses the device table and prepare the hash table which will
 * later be used by mkfs.ubifs to create the specified files/device nodes.
 * Returns zero in case of success and a negative error code in case of
 * failure.
 */
int parse_devtable(const char *tbl_file)
{
	FILE *f;
	char *line = NULL;
	struct stat st;
	size_t len;

	dbg_msg(1, "parsing device table file '%s'", tbl_file);

	path_htbl = create_hashtable(128, &r5_hash, &is_equivalent);
	if (!path_htbl)
		return err_msg("cannot create path hash table");

	f = fopen(tbl_file, "r");
	if (!f)
		return sys_err_msg("cannot open '%s'", tbl_file);

	if (fstat(fileno(f), &st) < 0) {
		sys_err_msg("cannot stat '%s'", tbl_file);
		goto out_close;
	}

	if (st.st_size < 10) {
		sys_err_msg("'%s' is too short", tbl_file);
		goto out_close;
	}

	/*
	 * The general plan now is to read in one line at a time, check for
	 * leading comment delimiters ('#'), then try and parse the line as a
	 * device table
	 */
	while (getline(&line, &len, f) != -1) {
		/* First trim off any white-space */
		len = strlen(line);

		/* Trim trailing white-space */
		while (len > 0 && isspace(line[len - 1]))
			line[--len] = '\0';
		/* Trim leading white-space */
		memmove(line, &line[strspn(line, " \n\r\t\v")], len);

		/* How long are we after trimming? */
		len = strlen(line);

		/* If this is not a comment line, try to interpret it */
		if (len && *line != '#') {
			if (interpret_table_entry(line)) {
				err_msg("cannot parse '%s'", line);
				goto out_close;
			}
		}

		free(line);
		line = NULL;
	}

	dbg_msg(1, "finished parsing");
	fclose(f);
	return 0;

out_close:
	fclose(f);
	free_devtable_info();
	return -1;
}