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kldxref: Fix maketempfile function's way of finding the root dir

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Rather than assuming that the "root" is passed as directory and will be
marked by a trailing slash, we just assume that the directory, which has
been checked previously to be a directory, is a directory.

This fixes an inconsistency between `kldxref /boot/modules`, which tries
to create the temp file in `/boot/`, and `kldxref /boot/modules/`, which
tries to create it in `/boot/modules/` itself.

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/1093
This commit is contained in:
Mina Galić 2024-02-02 08:35:46 -07:00 committed by Warner Losh
parent 36f0a34ca6
commit f4613af424
1 changed files with 2 additions and 5 deletions
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7
usr.sbin/kldxref/kldxref.c
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@ -717,12 +717,9 @@ read_kld(char *filename, char *kldname)
static FILE *
maketempfile(char *dest, const char *root)
{
char *p;
int n, fd;
int fd;
p = strrchr(root, '/');
n = p != NULL ? p - root + 1 : 0;
if (snprintf(dest, MAXPATHLEN, "%.*slhint.XXXXXX", n, root) >=
if (snprintf(dest, MAXPATHLEN, "%s/lhint.XXXXXX", root) >=
MAXPATHLEN) {
errno = ENAMETOOLONG;
return (NULL);