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SLES10 Fixes (part 9) 

- Proper ioctl() 32/64-bit binary compatibility.  We need to ensure the
  ioctl data itself is always packed the same for 32/64-bit binaries.
  Additionally, the correct thing to do is encode this size in bytes
  as part of the command using _IOC_SIZE().
- Minor formatting changes to respect the 80 character limit.
- Move all SPLAT_SUBSYSTEM_* defines in to splat-ctl.h.
- Increase SPLAT_SUBSYSTEM_UNKNOWN because we were getting close
  to accidentally using it for a real registered subsystem.
This commit is contained in:
Brian Behlendorf 2009-05-21 10:56:11 -07:00
parent 9593ef76d9
commit e554dffa60
16 changed files with 64 additions and 85 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
cmd/splat.c
View File

@ -131,7 +131,7 @@ static int subsystem_setup(void)
rc = ioctl(splatctl_fd, SPLAT_CFG, cfg);
if (rc) {
fprintf(stderr, "Ioctl() error %lu / %d: %d\n",
fprintf(stderr, "Ioctl() error 0x%lx / %d: %d\n",
(unsigned long)SPLAT_CFG, cfg->cfg_cmd, errno);
free(cfg);
return rc;
@ -140,7 +140,7 @@ static int subsystem_setup(void)
size = cfg->cfg_rc1;
free(cfg);
/* Based on the newly aquired number of subsystems allocate enough
/* Based on the newly acquired number of subsystems allocate
* memory to get the descriptive information for them all. */
cfg_size = sizeof(*cfg) + size * sizeof(splat_user_t);
cfg = (splat_cfg_t *)malloc(cfg_size);
@ -180,23 +180,6 @@ static int subsystem_setup(void)
return 0;
}
/* XXX - Commented out until we sort the lists */
#if 0
static int subsystem_compare(const void *l_arg, const void *r_arg, void *private)
{
const subsystem_t *l = l_arg;
const subsystem_t *r = r_arg;
if (l->sub_desc.id > r->sub_desc.id)
return 1;
if (l->sub_desc.id < r->sub_desc.id)
return -1;
return 0;
}
#endif
static void subsystem_list(List l, int indent)
{
ListIterator i;
@ -309,23 +292,6 @@ static int test_setup(subsystem_t *sub)
return 0;
}
/* XXX - Commented out until we sort the lists */
#if 0
static int test_compare(const void *l_arg, const void *r_arg, void *private)
{
const test_t *l = l_arg;
const test_t *r = r_arg;
if (l->test_desc.id > r->test_desc.id)
return 1;
if (l->test_desc.id < r->test_desc.id)
return -1;
return 0;
}
#endif
static test_t *test_copy(test_t *test)
{
return test_init(test->test_sub, &test->test_desc);
@ -467,7 +433,8 @@ static int test_run(cmd_args_t *args, test_t *test)
free(cmd);
if (args->args_verbose) {
if ((rc = read(splatctl_fd, splat_buffer, splat_buffer_size - 1)) < 0) {
if ((rc = read(splatctl_fd, splat_buffer,
splat_buffer_size - 1)) < 0) {
fprintf(stdout, "Error reading results: %d\n", rc);
} else {
fprintf(stdout, "\n%s\n", splat_buffer);

62
include/splat-ctl.h
View File

@ -27,10 +27,13 @@
#ifndef _SPLAT_CTL_H
#define _SPLAT_CTL_H
/* Contains shared definitions which both the userspace
* and kernelspace portions of splat must agree on.
*/
#include <linux/types.h>
/*
* Contains shared definitions for both user space and kernel space. To
* ensure 32-bit/64-bit interoperability over ioctl()'s only types with
* fixed sizes can be used.
*/
#define SPLAT_MAJOR 225 /* XXX - Arbitrary */
#define SPLAT_MINORS 1
#define SPLAT_NAME "splatctl"
@ -40,24 +43,24 @@
#define SPLAT_DESC_SIZE 60
typedef struct splat_user {
char name[SPLAT_NAME_SIZE]; /* short name */
char desc[SPLAT_DESC_SIZE]; /* short description */
int id; /* unique numeric id */
char name[SPLAT_NAME_SIZE]; /* Short name */
char desc[SPLAT_DESC_SIZE]; /* Short description */
__u32 id; /* Unique numeric id */
} splat_user_t;
#define SPLAT_CFG_MAGIC 0x15263748U
typedef struct splat_cfg {
unsigned int cfg_magic; /* Unique magic */
int cfg_cmd; /* Config command */
int cfg_arg1; /* Config command arg 1 */
int cfg_rc1; /* Config response 1 */
__u32 cfg_magic; /* Unique magic */
__u32 cfg_cmd; /* Configure command */
__s32 cfg_arg1; /* Configure command arg 1 */
__s32 cfg_rc1; /* Configure response 1 */
union {
struct {
int size;
__u32 size;
splat_user_t descs[0];
} splat_subsystems;
struct {
int size;
__u32 size;
splat_user_t descs[0];
} splat_tests;
} cfg_data;
@ -65,16 +68,16 @@ typedef struct splat_cfg {
#define SPLAT_CMD_MAGIC 0x9daebfc0U
typedef struct splat_cmd {
unsigned int cmd_magic; /* Unique magic */
int cmd_subsystem; /* Target subsystem */
int cmd_test; /* Subsystem test */
int cmd_data_size; /* Extra opaque data */
__u32 cmd_magic; /* Unique magic */
__u32 cmd_subsystem; /* Target subsystem */
__u32 cmd_test; /* Subsystem test */
__u32 cmd_data_size; /* Opaque data size */
char cmd_data_str[0]; /* Opaque data region */
} splat_cmd_t;
/* Valid ioctls */
#define SPLAT_CFG _IOWR('f', 101, long)
#define SPLAT_CMD _IOWR('f', 102, long)
#define SPLAT_CFG _IOWR('f', 101, splat_cfg_t)
#define SPLAT_CMD _IOWR('f', 102, splat_cmd_t)
/* Valid configuration commands */
#define SPLAT_CFG_BUFFER_CLEAR 0x001 /* Clear text buffer */
@ -84,11 +87,24 @@ typedef struct splat_cmd {
#define SPLAT_CFG_TEST_COUNT 0x201 /* Number of tests */
#define SPLAT_CFG_TEST_LIST 0x202 /* List of N tests */
/* Valid subsystem and test commands defined in each subsystem, we do
* need to be careful to avoid colisions. That alone may argue to define
* them all here, for now we just define the global error codes.
/*
* Valid subsystem and test commands are defined in each subsystem as
* SPLAT_SUBSYSTEM_*. We do need to be careful to avoid collisions, the
* currently defined subsystems are as follows:
*/
#define SPLAT_SUBSYSTEM_UNKNOWN 0xF00
#define SPLAT_TEST_UNKNOWN 0xFFF
#define SPLAT_SUBSYSTEM_KMEM 0x0100
#define SPLAT_SUBSYSTEM_TASKQ 0x0200
#define SPLAT_SUBSYSTEM_KRNG 0x0300
#define SPLAT_SUBSYSTEM_MUTEX 0x0400
#define SPLAT_SUBSYSTEM_CONDVAR 0x0500
#define SPLAT_SUBSYSTEM_THREAD 0x0600
#define SPLAT_SUBSYSTEM_RWLOCK 0x0700
#define SPLAT_SUBSYSTEM_TIME 0x0800
#define SPLAT_SUBSYSTEM_VNODE 0x0900
#define SPLAT_SUBSYSTEM_KOBJ 0x0a00
#define SPLAT_SUBSYSTEM_ATOMIC 0x0b00
#define SPLAT_SUBSYSTEM_LIST 0x0c00
#define SPLAT_SUBSYSTEM_GENERIC 0x0d00
#define SPLAT_SUBSYSTEM_UNKNOWN 0xff00
#endif /* _SPLAT_CTL_H */

1
module/splat/splat-atomic.c
View File

@ -26,7 +26,6 @@
#include "splat-internal.h"
#define SPLAT_SUBSYSTEM_ATOMIC 0x0b00
#define SPLAT_ATOMIC_NAME "atomic"
#define SPLAT_ATOMIC_DESC "Kernel Atomic Tests"

1
module/splat/splat-condvar.c
View File

@ -26,7 +26,6 @@
#include "splat-internal.h"
#define SPLAT_SUBSYSTEM_CONDVAR 0x0500
#define SPLAT_CONDVAR_NAME "condvar"
#define SPLAT_CONDVAR_DESC "Kernel Condition Variable Tests"

21
module/splat/splat-ctl.c
View File

@ -326,11 +326,15 @@ splat_validate(struct file *file, splat_subsystem_t *sub, int cmd, void *arg)
}
static int
splat_ioctl_cfg(struct file *file, unsigned long arg)
splat_ioctl_cfg(struct file *file, unsigned int cmd, unsigned long arg)
{
splat_cfg_t kcfg;
int rc = 0;
/* User and kernel space agree about arg size */
if (_IOC_SIZE(cmd) != sizeof(kcfg))
return -EBADMSG;
if (copy_from_user(&kcfg, (splat_cfg_t *)arg, sizeof(kcfg)))
return -EFAULT;
@ -362,7 +366,7 @@ splat_ioctl_cfg(struct file *file, unsigned long arg)
case SPLAT_CFG_SUBSYSTEM_LIST:
/* cfg_arg1 - Unused
* cfg_rc1 - Set to number of subsystems
* cfg_data.splat_subsystems - Populated with subsystems
* cfg_data.splat_subsystems - Set with subsystems
*/
rc = splat_subsystem_list(&kcfg, arg);
break;
@ -380,7 +384,8 @@ splat_ioctl_cfg(struct file *file, unsigned long arg)
rc = splat_test_list(&kcfg, arg);
break;
default:
splat_print(file, "Bad config command %d\n", kcfg.cfg_cmd);
splat_print(file, "Bad config command %d\n",
kcfg.cfg_cmd);
rc = -EINVAL;
break;
}
@ -389,13 +394,17 @@ splat_ioctl_cfg(struct file *file, unsigned long arg)
}
static int
splat_ioctl_cmd(struct file *file, unsigned long arg)
splat_ioctl_cmd(struct file *file, unsigned int cmd, unsigned long arg)
{
splat_subsystem_t *sub;
splat_cmd_t kcmd;
int rc = -EINVAL;
void *data = NULL;
/* User and kernel space agree about arg size */
if (_IOC_SIZE(cmd) != sizeof(kcmd))
return -EBADMSG;
if (copy_from_user(&kcmd, (splat_cfg_t *)arg, sizeof(kcmd)))
return -EFAULT;
@ -446,10 +455,10 @@ splat_ioctl(struct inode *inode, struct file *file,
switch (cmd) {
case SPLAT_CFG:
rc = splat_ioctl_cfg(file, arg);
rc = splat_ioctl_cfg(file, cmd, arg);
break;
case SPLAT_CMD:
rc = splat_ioctl_cmd(file, arg);
rc = splat_ioctl_cmd(file, cmd, arg);
break;
default:
splat_print(file, "Bad ioctl command %d\n", cmd);

1
module/splat/splat-generic.c
View File

@ -26,7 +26,6 @@
#include "splat-internal.h"
#define SPLAT_SUBSYSTEM_GENERIC 0x0d00
#define SPLAT_GENERIC_NAME "generic"
#define SPLAT_GENERIC_DESC "Kernel Generic Tests"

1
module/splat/splat-kmem.c
View File

@ -26,7 +26,6 @@
#include "splat-internal.h"
#define SPLAT_SUBSYSTEM_KMEM 0x0100
#define SPLAT_KMEM_NAME "kmem"
#define SPLAT_KMEM_DESC "Kernel Malloc/Slab Tests"

1
module/splat/splat-kobj.c
View File

@ -26,7 +26,6 @@
#include "splat-internal.h"
#define SPLAT_SUBSYSTEM_KOBJ 0x0a00
#define SPLAT_KOBJ_NAME "kobj"
#define SPLAT_KOBJ_DESC "Kernel Kobj Tests"

1
module/splat/splat-list.c
View File

@ -26,7 +26,6 @@
#include "splat-internal.h"
#define SPLAT_SUBSYSTEM_LIST 0x0c00
#define SPLAT_LIST_NAME "list"
#define SPLAT_LIST_DESC "Kernel List Tests"

1
module/splat/splat-mutex.c
View File

@ -26,7 +26,6 @@
#include "splat-internal.h"
#define SPLAT_SUBSYSTEM_MUTEX 0x0400
#define SPLAT_MUTEX_NAME "mutex"
#define SPLAT_MUTEX_DESC "Kernel Mutex Tests"

1
module/splat/splat-random.c
View File

@ -26,7 +26,6 @@
#include "splat-internal.h"
#define SPLAT_SUBSYSTEM_KRNG 0x0300
#define SPLAT_KRNG_NAME "krng"
#define SPLAT_KRNG_DESC "Kernel Random Number Generator Tests"

1
module/splat/splat-rwlock.c
View File

@ -26,7 +26,6 @@
#include "splat-internal.h"
#define SPLAT_SUBSYSTEM_RWLOCK 0x0700
#define SPLAT_RWLOCK_NAME "rwlock"
#define SPLAT_RWLOCK_DESC "Kernel RW Lock Tests"

1
module/splat/splat-taskq.c
View File

@ -26,7 +26,6 @@
#include "splat-internal.h"
#define SPLAT_SUBSYSTEM_TASKQ 0x0200
#define SPLAT_TASKQ_NAME "taskq"
#define SPLAT_TASKQ_DESC "Kernel Task Queue Tests"

1
module/splat/splat-thread.c
View File

@ -26,7 +26,6 @@
#include "splat-internal.h"
#define SPLAT_SUBSYSTEM_THREAD 0x0600
#define SPLAT_THREAD_NAME "thread"
#define SPLAT_THREAD_DESC "Kernel Thread Tests"

1
module/splat/splat-time.c
View File

@ -26,7 +26,6 @@
#include "splat-internal.h"
#define SPLAT_SUBSYSTEM_TIME 0x0800
#define SPLAT_TIME_NAME "time"
#define SPLAT_TIME_DESC "Kernel Time Tests"

1
module/splat/splat-vnode.c
View File

@ -27,7 +27,6 @@
#include "splat-internal.h"
#include <linux/rcupdate.h>
#define SPLAT_SUBSYSTEM_VNODE 0x0900
#define SPLAT_VNODE_NAME "vnode"
#define SPLAT_VNODE_DESC "Kernel Vnode Tests"