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udev: rules - print the first invalid character

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The current code would print the character following the first invalid
character.

Given an udev rules-file without a trailing newline we would otherwise print
garbage:

  invalid key/value pair in file /usr/lib/udev/rules.d/40-usb-media-players.rules
  on line 26, starting at character 25 ('m')

This is now changed to print

  invalid key/value pair in file /usr/lib/udev/rules.d/40-usb-media-players.rules
  on line 26, starting at character 25 ('')

(still not very good as printing \0 just gives the empty string)

Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
This commit is contained in:
Tom Gundersen 2014-11-28 21:46:34 +01:00 committed by Anthony G. Basile
parent 5cb9807847
commit b3a572ddf5
1 changed files with 2 additions and 2 deletions
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4
src/udev/udev-rules.c
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@ -1073,13 +1073,13 @@ static int add_rule(struct udev_rules *rules, char *line,
/* If we aren't at the end of the line, this is a parsing error.
* Make a best effort to describe where the problem is. */
if (*linepos != '\n') {
char buf[2] = {linepos[1]};
char buf[2] = {*linepos};
_cleanup_free_ char *tmp;
tmp = cescape(buf);
log_error("invalid key/value pair in file %s on line %u, starting at character %tu ('%s')",
filename, lineno, linepos - line + 1, tmp);
if (linepos[1] == '#')
if (*linepos == '#')
log_error("hint: comments can only start at beginning of line");
}
break;