[Bug 296489] linux_xattr.c: use of undeclared identifier 'SSIZE_MAX'

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=296489

            Bug ID: 296489
           Summary: linux_xattr.c: use of undeclared identifier
                    'SSIZE_MAX'
           Product: Base System
           Version: CURRENT
          Hardware: i386
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: [email protected]
          Reporter: [email protected]

I've seen this a few times recently when building kernel on amd64 with
TARGET_ARCH=i386:

/usr/local/src/sys/compat/linux/linux_xattr.c:356:15: error: use of undeclared
identifier 'SSIZE_MAX'

I noticed that limits.h is explicitly included in several other
sys/compat/linux/ c files. Explicitly including limits.h here as well does seem
to resolve the build error, although I'm not sure if this breaks anything else.



diff --git a/sys/compat/linux/linux_xattr.c b/sys/compat/linux/linux_xattr.c
index 9a206089ada1..608e70706a0b 100644
--- a/sys/compat/linux/linux_xattr.c
+++ b/sys/compat/linux/linux_xattr.c
@@ -30,6 +30,7 @@
 #include <sys/extattr.h>
 #include <sys/fcntl.h>
 #include <sys/file.h>
+#include <sys/limits.h>
 #include <sys/namei.h>
 #include <sys/proc.h>
 #include <sys/syscallsubr.h>

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