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Clean up some logic in jail error messages, replacing a missing test and

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a redundant test with a single correct test.
This commit is contained in:
Jamie Gritton 2016-06-09 20:39:57 +00:00
parent fb4cdc96a8
commit 176ff3a066
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=301758
1 changed files with 10 additions and 12 deletions
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22
sys/kern/kern_jail.c
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@ -1929,19 +1929,17 @@ kern_jail_set(struct thread *td, struct uio *optuio, int flags)
vrele(root);
done_errmsg:
if (error) {
vfs_getopt(opts, "errmsg", (void **)&errmsg, &errmsg_len);
if (errmsg_len > 0) {
if (vfs_getopt(opts, "errmsg", (void **)&errmsg,
&errmsg_len) == 0 && errmsg_len > 0) {
errmsg_pos = 2 * vfs_getopt_pos(opts, "errmsg") + 1;
if (errmsg_pos > 0) {
if (optuio->uio_segflg == UIO_SYSSPACE)
bcopy(errmsg,
optuio->uio_iov[errmsg_pos].iov_base,
errmsg_len);
else
copyout(errmsg,
optuio->uio_iov[errmsg_pos].iov_base,
errmsg_len);
}
if (optuio->uio_segflg == UIO_SYSSPACE)
bcopy(errmsg,
optuio->uio_iov[errmsg_pos].iov_base,
errmsg_len);
else
copyout(errmsg,
optuio->uio_iov[errmsg_pos].iov_base,
errmsg_len);
}
}
done_free: