Author: hselasky
Date: Thu May 26 09:04:14 2016
New Revision: 300721
URL: https://svnweb.freebsd.org/changeset/base/300721
Log:
Add support for runtime modifiable module parameters in the LinuxKPI.
Linux module parameters have a permissions value. If any write bits
are set we are allowed to modify the module parameter runtime. Reflect
this when creating the static SYSCTL nodes.
Sponsored by: Mellanox Technologies
MFC after: 1 week
Modified:
head/sys/compat/linuxkpi/common/include/linux/moduleparam.h
Modified: head/sys/compat/linuxkpi/common/include/linux/moduleparam.h
==============================================================================
--- head/sys/compat/linuxkpi/common/include/linux/moduleparam.h Thu May 26
08:47:06 2016 (r300720)
+++ head/sys/compat/linuxkpi/common/include/linux/moduleparam.h Thu May 26
09:04:14 2016 (r300721)
@@ -44,77 +44,81 @@
#define LINUXKPI_PARAM_PREFIX /* empty prefix is the default */
#endif
+#ifndef LINUXKPI_PARAM_PERM
+#define LINUXKPI_PARAM_PERM(perm) (((perm) & 0222) ? CTLFLAG_RWTUN :
CTLFLAG_RDTUN)
+#endif
+
#define LINUXKPI_PARAM_CONCAT_SUB(a,b,c,d) a##b##c##d
#define LINUXKPI_PARAM_CONCAT(...)
LINUXKPI_PARAM_CONCAT_SUB(__VA_ARGS__)
#define LINUXKPI_PARAM_PASS(...) __VA_ARGS__
#define LINUXKPI_PARAM_DESC(name)
LINUXKPI_PARAM_CONCAT(linuxkpi_,LINUXKPI_PARAM_PREFIX,name,_desc)
#define LINUXKPI_PARAM_NAME(name)
LINUXKPI_PARAM_CONCAT(LINUXKPI_PARAM_PREFIX,name,,)
-#define LINUXKPI_PARAM_bool(name, var)
\
+#define LINUXKPI_PARAM_bool(name, var, perm)
\
extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_BOOL(LINUXKPI_PARAM_PARENT, OID_AUTO,\
- LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \
+ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0, \
LINUXKPI_PARAM_DESC(name)))
-#define LINUXKPI_PARAM_byte(name, var)
\
+#define LINUXKPI_PARAM_byte(name, var, perm)
\
extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_U8(LINUXKPI_PARAM_PARENT, OID_AUTO, \
- LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \
+ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0, \
LINUXKPI_PARAM_DESC(name)))
-#define LINUXKPI_PARAM_short(name, var)
\
+#define LINUXKPI_PARAM_short(name, var, perm)
\
extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_S16(LINUXKPI_PARAM_PARENT, OID_AUTO, \
- LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \
+ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0, \
LINUXKPI_PARAM_DESC(name)))
-#define LINUXKPI_PARAM_ushort(name, var)
\
+#define LINUXKPI_PARAM_ushort(name, var, perm)
\
extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_U16(LINUXKPI_PARAM_PARENT, OID_AUTO, \
- LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \
+ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0, \
LINUXKPI_PARAM_DESC(name)))
-#define LINUXKPI_PARAM_int(name, var)
\
+#define LINUXKPI_PARAM_int(name, var, perm)
\
extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_INT(LINUXKPI_PARAM_PARENT, OID_AUTO, \
- LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \
+ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0,\
LINUXKPI_PARAM_DESC(name)))
-#define LINUXKPI_PARAM_uint(name, var)
\
+#define LINUXKPI_PARAM_uint(name, var, perm)
\
extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_UINT(LINUXKPI_PARAM_PARENT, OID_AUTO, \
- LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \
+ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0, \
LINUXKPI_PARAM_DESC(name)))
-#define LINUXKPI_PARAM_long(name, var)
\
+#define LINUXKPI_PARAM_long(name, var, perm)
\
extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_LONG(LINUXKPI_PARAM_PARENT, OID_AUTO, \
- LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \
+ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0, \
LINUXKPI_PARAM_DESC(name)))
-#define LINUXKPI_PARAM_ulong(name, var)
\
+#define LINUXKPI_PARAM_ulong(name, var, perm)
\
extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_ULONG(LINUXKPI_PARAM_PARENT, OID_AUTO, \
- LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, &(var), 0, \
+ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), &(var), 0, \
LINUXKPI_PARAM_DESC(name)))
#define module_param_string(name, str, len, perm)
\
extern const char LINUXKPI_PARAM_DESC(name)[]; \
LINUXKPI_PARAM_PASS(SYSCTL_STRING(LINUXKPI_PARAM_PARENT, OID_AUTO, \
- LINUXKPI_PARAM_NAME(name), CTLFLAG_RDTUN, (str), (len), \
+ LINUXKPI_PARAM_NAME(name), LINUXKPI_PARAM_PERM(perm), (str), (len), \
LINUXKPI_PARAM_DESC(name)))
#define module_param_named(name, var, type, mode) \
- LINUXKPI_PARAM_##type(name, var)
+ LINUXKPI_PARAM_##type(name, var, mode)
#define module_param(var, type, mode) \
- LINUXKPI_PARAM_##type(var, var)
+ LINUXKPI_PARAM_##type(var, var, mode)
#define module_param_named_unsafe(name, var, type, mode) \
- LINUXKPI_PARAM_##type(name, var)
+ LINUXKPI_PARAM_##type(name, var, mode)
#define module_param_unsafe(var, type, mode) \
- LINUXKPI_PARAM_##type(var, var)
+ LINUXKPI_PARAM_##type(var, var, mode)
#define module_param_array(var, type, addr_argc, mode)
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