NAME

       seccomp_syscall_resolve_name - Resolve a syscall name

SYNOPSIS

       #include <seccomp.h>

       int seccomp_syscall_resolve_name(const char *name);
       int seccomp_syscall_resolve_name_arch(uint32_t arch_token,
                                             const char *name);
       char *seccomp_syscall_resolve_num_arch(uint32_t arch_token, int num);

       Link with -lseccomp.

DESCRIPTION

       The   seccomp_syscall_resolve_name()   and  seccomp_syscall_resolve_name_arch()  functions
       resolve the commonly used syscall name to the syscall number used by the  kernel  and  the
       rest  of the libseccomp API.  The seccomp_syscall_resolve_num_arch() function resolves the
       syscall number used by the kernel to the commonly used syscall name.

       The    caller    is    responsible    for    freeing    the    returned    string     from
       seccomp_syscall_resolve_num_arch().

RETURN VALUE

       In  the case of seccomp_syscall_resolve_name() and seccomp_syscall_resolve_name_arch() the
       associated syscall number is returned, with  the  negative  pseudo  syscall  number  being
       returned  in  cases where the given syscall does not exist for the architeture.  The value
       __NR_SCMP_ERROR is returned in case of error.  In all cases, the return value is  suitable
       for use in any libseccomp API function which requires the syscall number, examples include
       seccomp_rule_add() and seccomp_rule_add_exact().

       In the case of seccomp_syscall_resolve_num_arch() the associated syscall name is  returned
       and it remains the callers responsibility to free the returned string via free(3).

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_rule_add(ctx, SCMP_ACT_ALLOW,
                                  seccomp_syscall_resolve_name("open"), 0);
            if (rc < 0)
                 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  http://libseccomp.sf.net.   This 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_rule_add(3), seccomp_rule_add_exact(3)