On Mon, 2007-12-03 at 15:49 -0500, Daniel J Walsh wrote:
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> Stephen Smalley wrote:
> > On Mon, 2007-12-03 at 14:51 -0500, Todd Miller wrote:
> >> Daniel J Walsh wrote:
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> >>> genhomedircon includes the "\n" in /etc/shells so no shells in the
> >>> /etc/passwd match.
> >> Isn't this going to cause problems if the last line in /etc/shells has
> >> no newline?
> >>
> >> Instead of:
> >> temp[strlen(temp)-1]=0;
> >>
> >> I would use:
> >> temp[strcspn(temp, "\n")] = '\0';
> >>
> >> That will overwrite the first newline with a NUL or, if there is no
> >> newline, the terminating NUL will be overwritten with another NUL, which
> >> is harmless. It is a useful idiom...
> >
> > Given that getline() returns the length read (not to be confused with
> > the buffer length), why not just:
> > while ((len = getline(&temp, &buff_len, shells)) > 0) {
> > if (temp[len-1] == '\n') temp[len-1] = 0;
> >
> Second try.
Merged with two changes (type on len => ssize_t, assert on store_path
after strdup so that we don't continue if allocation fails).
--
Stephen Smalley
National Security Agency
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