To allow devpts to be mounted with options of uid/gid of uint32_t, use kstrtouint() instead of match_int(). Doing that, mounting devpts with uid or gid > (2^31 - 1) will work as expected, e.g.:
# mount -t devpts devpts /tmp/devptsdir -o \ newinstance,ptmxmode=0666,mode=620,uid=3598450688,gid=3598450693 It was originally by reported on systemd github issues: https://github.com/systemd/systemd/issues/956 Reported-by: Alban Crequy <al...@endocode.com> Signed-off-by: Dongsu Park <dp...@posteo.net> --- fs/devpts/inode.c | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c index c35ffdc12bba..83c3e7368f38 100644 --- a/fs/devpts/inode.c +++ b/fs/devpts/inode.c @@ -188,23 +188,33 @@ static int parse_mount_options(char *data, int op, struct pts_mount_opts *opts) token = match_token(p, tokens, args); switch (token) { case Opt_uid: - if (match_int(&args[0], &option)) + { + char *uidstr = args[0].from; + uid_t uidval; + int rc = kstrtouint(uidstr, 0, &uidval); + if (rc) return -EINVAL; - uid = make_kuid(current_user_ns(), option); + uid = make_kuid(current_user_ns(), uidval); if (!uid_valid(uid)) return -EINVAL; opts->uid = uid; opts->setuid = 1; break; + } case Opt_gid: - if (match_int(&args[0], &option)) + { + char *gidstr = args[0].from; + gid_t gidval; + int rc = kstrtouint(gidstr, 0, &gidval); + if (rc) return -EINVAL; - gid = make_kgid(current_user_ns(), option); + gid = make_kgid(current_user_ns(), gidval); if (!gid_valid(gid)) return -EINVAL; opts->gid = gid; opts->setgid = 1; break; + } case Opt_mode: if (match_octal(&args[0], &option)) return -EINVAL; -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
