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author | Manuel Bentele | 2020-09-08 15:07:31 +0200 |
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committer | Manuel Bentele | 2020-09-16 07:37:56 +0200 |
commit | efc492d327ea6a9658674eb9e971aff3742818cd (patch) | |
tree | 72a3e3e61ee3cbc7df4059ee24ae95487c265b60 /utils/lib/caputils.c | |
parent | Added file format file format subsystem for loop devices (diff) | |
download | xloop-efc492d327ea6a9658674eb9e971aff3742818cd.tar.gz xloop-efc492d327ea6a9658674eb9e971aff3742818cd.tar.xz xloop-efc492d327ea6a9658674eb9e971aff3742818cd.zip |
Added patched losetup utility to configure xloop devices
Diffstat (limited to 'utils/lib/caputils.c')
-rw-r--r-- | utils/lib/caputils.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/utils/lib/caputils.c b/utils/lib/caputils.c new file mode 100644 index 0000000..17e9c01 --- /dev/null +++ b/utils/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 <stdio.h> + +#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; +} |