lkdtm: hide unused functions
A conversion of the lkdtm core module added an "#ifdef CONFIG_KPROBES" check,
but a number of functions then become unused:
drivers/misc/lkdtm_core.c:340:16: error: 'lkdtm_debugfs_entry' defined but not used [-Werror=unused-function]
drivers/misc/lkdtm_core.c:122:12: error: 'jp_generic_ide_ioctl' defined but not used [-Werror=unused-function]
drivers/misc/lkdtm_core.c:114:12: error: 'jp_scsi_dispatch_cmd' defined but not used [-Werror=unused-function]
drivers/misc/lkdtm_core.c:106:12: error: 'jp_hrtimer_start' defined but not used [-Werror=unused-function]
drivers/misc/lkdtm_core.c:97:22: error: 'jp_shrink_inactive_list' defined but not used [-Werror=unused-function]
drivers/misc/lkdtm_core.c:89:13: error: 'jp_ll_rw_block' defined but not used [-Werror=unused-function]
drivers/misc/lkdtm_core.c:83:13: error: 'jp_tasklet_action' defined but not used [-Werror=unused-function]
drivers/misc/lkdtm_core.c:75:20: error: 'jp_handle_irq_event' defined but not used [-Werror=unused-function]
drivers/misc/lkdtm_core.c:68:21: error: 'jp_do_irq' defined but not used [-Werror=unused-function]
This adds the same #ifdef everywhere. There is probably a better way to do the
same thing, but for now this avoids the new warnings.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: c479e3fd88
("lkdtm: use struct arrays instead of enums")
[kees: moved some code around to better consolidate the #ifdefs]
Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
parent
80f7631963
commit
2b271cb720
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@ -53,12 +53,14 @@
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#define DEFAULT_COUNT 10
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static void lkdtm_handler(void);
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static int lkdtm_debugfs_open(struct inode *inode, struct file *file);
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static ssize_t lkdtm_debugfs_read(struct file *f, char __user *user_buf,
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size_t count, loff_t *off);
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static ssize_t direct_entry(struct file *f, const char __user *user_buf,
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size_t count, loff_t *off);
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#ifdef CONFIG_KPROBES
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static void lkdtm_handler(void);
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static ssize_t lkdtm_debugfs_entry(struct file *f,
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const char __user *user_buf,
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size_t count, loff_t *off);
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@ -118,7 +120,7 @@ static int jp_scsi_dispatch_cmd(struct scsi_cmnd *cmd)
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return 0;
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}
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#ifdef CONFIG_IDE
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# ifdef CONFIG_IDE
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static int jp_generic_ide_ioctl(ide_drive_t *drive, struct file *file,
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struct block_device *bdev, unsigned int cmd,
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unsigned long arg)
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@ -127,9 +129,9 @@ static int jp_generic_ide_ioctl(ide_drive_t *drive, struct file *file,
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jprobe_return();
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return 0;
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}
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# endif
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#endif
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/* Crash points */
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struct crashpoint {
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const char *name;
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@ -238,10 +240,6 @@ static struct jprobe *lkdtm_jprobe;
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struct crashpoint *lkdtm_crashpoint;
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struct crashtype *lkdtm_crashtype;
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/* Global crash counter and spinlock. */
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static int crash_count = DEFAULT_COUNT;
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static DEFINE_SPINLOCK(crash_count_lock);
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/* Module parameters */
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static int recur_count = -1;
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module_param(recur_count, int, 0644);
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@ -285,29 +283,6 @@ static noinline void lkdtm_do_action(struct crashtype *crashtype)
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crashtype->func();
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}
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/* Called by jprobe entry points. */
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static void lkdtm_handler(void)
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{
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unsigned long flags;
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bool do_it = false;
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BUG_ON(!lkdtm_crashpoint || !lkdtm_crashtype);
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spin_lock_irqsave(&crash_count_lock, flags);
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crash_count--;
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pr_info("Crash point %s of type %s hit, trigger in %d rounds\n",
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lkdtm_crashpoint->name, lkdtm_crashtype->name, crash_count);
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if (crash_count == 0) {
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do_it = true;
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crash_count = cpoint_count;
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}
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spin_unlock_irqrestore(&crash_count_lock, flags);
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if (do_it)
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lkdtm_do_action(lkdtm_crashtype);
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}
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static int lkdtm_register_cpoint(struct crashpoint *crashpoint,
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struct crashtype *crashtype)
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{
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@ -337,6 +312,34 @@ static int lkdtm_register_cpoint(struct crashpoint *crashpoint,
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return ret;
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}
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#ifdef CONFIG_KPROBES
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/* Global crash counter and spinlock. */
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static int crash_count = DEFAULT_COUNT;
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static DEFINE_SPINLOCK(crash_count_lock);
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/* Called by jprobe entry points. */
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static void lkdtm_handler(void)
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{
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unsigned long flags;
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bool do_it = false;
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BUG_ON(!lkdtm_crashpoint || !lkdtm_crashtype);
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spin_lock_irqsave(&crash_count_lock, flags);
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crash_count--;
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pr_info("Crash point %s of type %s hit, trigger in %d rounds\n",
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lkdtm_crashpoint->name, lkdtm_crashtype->name, crash_count);
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if (crash_count == 0) {
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do_it = true;
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crash_count = cpoint_count;
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}
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spin_unlock_irqrestore(&crash_count_lock, flags);
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if (do_it)
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lkdtm_do_action(lkdtm_crashtype);
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}
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static ssize_t lkdtm_debugfs_entry(struct file *f,
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const char __user *user_buf,
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size_t count, loff_t *off)
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@ -374,6 +377,7 @@ static ssize_t lkdtm_debugfs_entry(struct file *f,
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return count;
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}
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#endif
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/* Generic read callback that just prints out the available crash types */
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static ssize_t lkdtm_debugfs_read(struct file *f, char __user *user_buf,
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@ -476,8 +480,10 @@ static int __init lkdtm_module_init(void)
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}
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}
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#ifdef CONFIG_KPROBES
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/* Set crash count. */
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crash_count = cpoint_count;
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#endif
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/* Handle test-specific initialization. */
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lkdtm_bugs_init(&recur_count);
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