Commit c017c71c authored by Nicolas Iooss's avatar Nicolas Iooss Committed by Paul Moore

selinux: include sys/socket.h in host programs to have PF_MAX

Compiling with clang and -Wundef makes the compiler report a usage of
undefined PF_MAX macro in security/selinux/include/classmap.h:

    In file included from scripts/selinux/mdp/mdp.c:48:
    security/selinux/include/classmap.h:37:31: warning: no previous
    extern declaration for non-static variable 'secclass_map'
    [-Wmissing-variable-declarations]
    struct security_class_mapping secclass_map[] = {
                                  ^
    security/selinux/include/classmap.h:235:5: error: 'PF_MAX' is not
    defined, evaluates to 0 [-Werror,-Wundef]
    #if PF_MAX > 43
        ^
    In file included from scripts/selinux/genheaders/genheaders.c:17:
    security/selinux/include/classmap.h:37:31: warning: no previous
    extern declaration for non-static variable 'secclass_map'
    [-Wmissing-variable-declarations]
    struct security_class_mapping secclass_map[] = {
                                  ^
    security/selinux/include/classmap.h:235:5: error: 'PF_MAX' is not
    defined, evaluates to 0 [-Werror,-Wundef]
    #if PF_MAX > 43
        ^

PF_MAX is defined in include/linux/socket.h but not in
include/uapi/linux/socket.h. Therefore host programs have to rely on the
definition from libc's /usr/include/bits/socket.h, included by
<sys/socket.h>.

Fix the issue by using sys/socket.h in mdp and genheaders. When
classmap.h is included by security/selinux/avc.c, it uses the kernel
definition of PF_MAX, which makes the test consistent.
Signed-off-by: default avatarNicolas Iooss <nicolas.iooss@m4x.org>
Signed-off-by: default avatarPaul Moore <paul@paul-moore.com>
parent 579fc0dc
......@@ -8,6 +8,7 @@
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <sys/socket.h>
struct security_class_mapping {
const char *name;
......
......@@ -32,6 +32,7 @@
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
static void usage(char *name)
{
......
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