From 30ff6afe596eddafacf22b1a5b2d1a3d6254ea15 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 15:14:44 +0200 Subject: Adding upstream version 2.36.1. Signed-off-by: Daniel Baumann --- lib/caputils.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 lib/caputils.c (limited to 'lib/caputils.c') diff --git a/lib/caputils.c b/lib/caputils.c new file mode 100644 index 0000000..17e9c01 --- /dev/null +++ b/lib/caputils.c @@ -0,0 +1,45 @@ +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include + +#include "caputils.h" +#include "pathnames.h" + +int cap_last_cap(void) +{ + /* CAP_LAST_CAP is untrustworthy. */ + static int ret = -1; + int matched; + FILE *f; + + if (ret != -1) + return ret; + + f = fopen(_PATH_PROC_CAPLASTCAP, "r"); + if (!f) { + ret = CAP_LAST_CAP; /* guess */ + return ret; + } + + matched = fscanf(f, "%d", &ret); + fclose(f); + + if (matched != 1) + ret = CAP_LAST_CAP; /* guess */ + + return ret; +} -- cgit v1.2.3