NAME

       seccomp_load - Load the current seccomp filter into the kernel

SYNOPSIS

       #include <seccomp.h>

       typedef void * scmp_filter_ctx;

       int seccomp_load(scmp_filter_ctx ctx);

       Link with -lseccomp.

DESCRIPTION

       Loads the seccomp filter provided by ctx into the kernel; if the function succeeds the new
       seccomp filter will be active when the function returns.

       As it is possible to have multiple stacked seccomp filters for a given  task  (defined  as
       either a process or a thread), it is important to remember that each of the filters loaded
       for a given task are executed when a syscall is made and the "strictest" rule is the  rule
       that  is  applied.   In the case of seccomp, "strictest" is defined as the action with the
       lowest value (e.g.  SCMP_ACT_KILL is "stricter" than SCMP_ACT_ALLOW ).

RETURN VALUE

       Returns zero on success or one of the following error codes on failure:

       -ECANCELED
              There was a system failure beyond the control of the library.

       -EFAULT
              Internal libseccomp failure.

       -EINVAL
              Invalid input, either the context or architecture token is invalid.

       -ENOMEM
              The library was unable to allocate enough memory.

       -ESRCH Unable to load the filter due to thread issues.

       If the SCMP_FLTATR_API_SYSRAWRC filter attribute is non-zero then additional  error  codes
       may  be returned to the caller; these additional error codes are the negative errno values
       returned by the system.  Unfortunately libseccomp  can  make  no  guarantees  about  these
       return values.

EXAMPLES

       #include <seccomp.h>

       int main(int argc, char *argv[])
       {
            int rc = -1;
            scmp_filter_ctx ctx;

            ctx = seccomp_init(SCMP_ACT_KILL);
            if (ctx == NULL)
                 goto out;

            /* ... */

            rc = seccomp_load(ctx);
            if (rc < 0)
                 goto out;

            /* ... */

       out:
            seccomp_release(ctx);
            return -rc;
       }

NOTES

       While  the  seccomp  filter  can be generated independent of the kernel, kernel support is
       required to load and enforce the seccomp filter generated by libseccomp.

       The libseccomp project site, with more information and the source code repository, can  be
       found  at  https://github.com/seccomp/libseccomp.   This  tool,  as well as the libseccomp
       library, is currently under development, please report any bugs at  the  project  site  or
       directly to the author.

AUTHOR

       Paul Moore <paul@paul-moore.com>

SEE ALSO

       seccomp_init(3),      seccomp_reset(3),      seccomp_release(3),      seccomp_rule_add(3),
       seccomp_rule_add_exact(3)