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

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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: Nicolas Iooss <nicolas.iooss@m4x.org>
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Nicolas Iooss 2017-03-05 15:01:52 +01:00 committed by Paul Moore
parent 579fc0dc09
commit c017c71ce0
2 changed files with 2 additions and 0 deletions
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1
scripts/selinux/genheaders/genheaders.c
View File

@ -8,6 +8,7 @@
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <sys/socket.h>
struct security_class_mapping {
const char *name;

1
scripts/selinux/mdp/mdp.c
View File

@ -32,6 +32,7 @@
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
static void usage(char *name)
{