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)

paul@paul-moore.com                              7 January 2013                  seccomp_syscall_resolve_name(3)