From a77c2973b3dc36808dc36018196b608ff5c79e74 Mon Sep 17 00:00:00 2001
From: Ben Gras <ben@minix3.org>
Date: Thu, 9 Jun 2011 16:09:13 +0200
Subject: [PATCH] fix clang warnings -R in kernel/ and servers/

---
 kernel/arch/i386/acpi.c            | 11 +++++++++--
 kernel/arch/i386/apic.c            |  9 ++++++---
 kernel/arch/i386/apic.h            |  3 +++
 kernel/arch/i386/arch_clock.c      | 10 ++++++----
 kernel/arch/i386/arch_system.c     | 17 -----------------
 kernel/arch/i386/breakpoints.c     |  2 +-
 kernel/arch/i386/i8259.c           |  1 +
 kernel/arch/i386/include/hw_intr.h |  8 +++++---
 kernel/arch/i386/memory.c          |  5 ++++-
 kernel/arch/i386/pre_init.c        | 25 +------------------------
 kernel/arch/i386/protect.c         | 14 ++------------
 kernel/clock.c                     |  2 ++
 kernel/debug.c                     |  1 -
 kernel/main.c                      |  5 +++--
 kernel/proc.c                      |  6 +++---
 kernel/profile.c                   |  4 ++--
 kernel/proto.h                     |  2 ++
 kernel/system.c                    |  7 ++++---
 kernel/system/do_getinfo.c         |  2 ++
 kernel/system/do_sprofile.c        |  3 ++-
 servers/ext2/main.c                | 22 ----------------------
 servers/ext2/misc.c                |  1 -
 servers/ext2/read.c                |  1 -
 servers/hgfs/main.c                |  1 -
 servers/ipc/sem.c                  |  2 ++
 servers/ipc/shm.c                  |  2 ++
 servers/iso9660fs/device.c         |  2 --
 servers/mfs/cache.c                |  3 +--
 servers/mfs/main.c                 |  3 ++-
 servers/pm/misc.c                  |  5 +----
 servers/sched/schedule.c           |  5 ++---
 servers/vfs/select.c               |  6 +++---
 32 files changed, 71 insertions(+), 119 deletions(-)

diff --git a/kernel/arch/i386/acpi.c b/kernel/arch/i386/acpi.c
index c0d319f87..36fa84e19 100644
--- a/kernel/arch/i386/acpi.c
+++ b/kernel/arch/i386/acpi.c
@@ -1,5 +1,9 @@
+
+#include <string.h>
+
 #include "kernel/kernel.h"
 #include "acpi.h"
+#include "arch_proto.h"
 
 typedef int ((* acpi_read_t)(phys_bytes addr, void * buff, size_t size));
 
@@ -80,7 +84,7 @@ PRIVATE int acpi_read_sdt_at(phys_bytes addr,
 	return tb->length;
 }
 
-PRIVATE phys_bytes acpi_get_table_base(const char * name)
+PUBLIC phys_bytes acpi_get_table_base(const char * name)
 {
 	int i;
 
@@ -93,7 +97,7 @@ PRIVATE phys_bytes acpi_get_table_base(const char * name)
 	return (phys_bytes) NULL;
 }
 
-PRIVATE size_t acpi_get_table_length(const char * name)
+PUBLIC size_t acpi_get_table_length(const char * name)
 {
 	int i;
 
@@ -130,6 +134,7 @@ PRIVATE void * acpi_madt_get_typed_item(struct acpi_madt_hdr * hdr,
 	return NULL;
 }
 
+#if 0
 PRIVATE void * acpi_madt_get_item(struct acpi_madt_hdr * hdr,
 				unsigned idx)
 {
@@ -147,6 +152,8 @@ PRIVATE void * acpi_madt_get_item(struct acpi_madt_hdr * hdr,
 
 	return NULL;
 }
+#endif
+
 PRIVATE int acpi_rsdp_test(void * buff)
 {
 	struct acpi_rsdp * rsdp = (struct acpi_rsdp *) buff;
diff --git a/kernel/arch/i386/apic.c b/kernel/arch/i386/apic.c
index d0790fa55..268d2d6e7 100644
--- a/kernel/arch/i386/apic.c
+++ b/kernel/arch/i386/apic.c
@@ -176,7 +176,7 @@ PRIVATE u32_t lapic_bus_freq[CONFIG_MAX_CPUS];
 #define IOAPIC_IOREGSEL	0x0
 #define IOAPIC_IOWIN	0x10
 
-PUBLIC u32_t ioapic_read(u32_t ioa_base, u32_t reg)
+PRIVATE u32_t ioapic_read(u32_t ioa_base, u32_t reg)
 {
 	*((u32_t *)(ioa_base + IOAPIC_IOREGSEL)) = (reg & 0xff);
 	return *(u32_t *)(ioa_base + IOAPIC_IOWIN);
@@ -207,6 +207,7 @@ PRIVATE void ioapic_disable_pin(vir_bytes ioapic_addr, int pin)
 	ioapic_write(ioapic_addr, IOAPIC_REDIR_TABLE + pin * 2, lo);
 }
 
+#if 0
 PRIVATE void ioapic_redirt_entry_read(void * ioapic_addr,
 					int entry,
 					u32_t *hi,
@@ -216,6 +217,7 @@ PRIVATE void ioapic_redirt_entry_read(void * ioapic_addr,
 	*hi = ioapic_read((u32_t)ioapic_addr, (u8_t) (IOAPIC_REDIR_TABLE + entry * 2 + 1));
 
 }
+#endif
 
 PRIVATE void ioapic_redirt_entry_write(void * ioapic_addr,
 					int entry,
@@ -570,7 +572,7 @@ PRIVATE  u32_t lapic_errstatus(void)
 
 PRIVATE int lapic_disable_in_msr(void)
 {
-	u32_t addr, msr_hi, msr_lo;
+	u32_t msr_hi, msr_lo;
 
 	ia32_msr_read(IA32_APIC_BASE, &msr_hi, &msr_lo);
 
@@ -617,11 +619,12 @@ PUBLIC void lapic_disable(void)
 
 PRIVATE int lapic_enable_in_msr(void)
 {
-	u32_t addr, msr_hi, msr_lo;
+	u32_t msr_hi, msr_lo;
 
 	ia32_msr_read(IA32_APIC_BASE, &msr_hi, &msr_lo);
 
 #if 0
+	u32_t addr;
 	/*FIXME this is a problem on AP */
 	/*
 	 * FIXME if the location is different (unlikely) then the one we expect,
diff --git a/kernel/arch/i386/apic.h b/kernel/arch/i386/apic.h
index fa6d19ae9..c79940ffc 100644
--- a/kernel/arch/i386/apic.h
+++ b/kernel/arch/i386/apic.h
@@ -123,6 +123,9 @@ EXTERN u32_t lapic_addr_vaddr; /* we remember the virtual address here until we
 				  switch to paging */
 
 _PROTOTYPE (int lapic_enable, (unsigned cpu));
+_PROTOTYPE (void ioapic_unmask_irq, (unsigned irq));
+_PROTOTYPE (void ioapic_mask_irq, (unsigned irq));
+_PROTOTYPE (void ioapic_reset_pic, (void));
 
 EXTERN int ioapic_enabled;
 EXTERN unsigned nioapics;
diff --git a/kernel/arch/i386/arch_clock.c b/kernel/arch/i386/arch_clock.c
index 235a9336c..31c4d8358 100644
--- a/kernel/arch/i386/arch_clock.c
+++ b/kernel/arch/i386/arch_clock.c
@@ -185,8 +185,6 @@ PUBLIC int register_local_timer_handler(const irq_handler_t handler)
 
 PUBLIC void cycles_accounting_init(void)
 {
-	unsigned cpu = cpuid;
-
 	read_tsc_64(get_cpu_var_ptr(cpu, tsc_ctr_switch));
 
 	make_zero64(get_cpu_var(cpu, cpu_last_tsc));
@@ -195,11 +193,11 @@ PUBLIC void cycles_accounting_init(void)
 
 PUBLIC void context_stop(struct proc * p)
 {
-	unsigned cpu = cpuid;
 	u64_t tsc, tsc_delta;
 	u64_t * __tsc_ctr_switch = get_cpulocal_var_ptr(tsc_ctr_switch);
-
 #ifdef CONFIG_SMP
+	unsigned cpu = cpuid;
+
 	/*
 	 * This function is called only if we switch from kernel to user or idle
 	 * or back. Therefore this is a perfect location to place the big kernel
@@ -279,7 +277,9 @@ PUBLIC void context_stop(struct proc * p)
 PUBLIC void context_stop_idle(void)
 {
 	int is_idle;
+#ifdef CONFIG_SMP
 	unsigned cpu = cpuid;
+#endif
 	
 	is_idle = get_cpu_var(cpu, cpu_is_idle);
 	get_cpu_var(cpu, cpu_is_idle) = 0;
@@ -310,7 +310,9 @@ PUBLIC short cpu_load(void)
 	u64_t tsc_delta, idle_delta, busy;
 	struct proc *idle;
 	short load;
+#ifdef CONFIG_SMP
 	unsigned cpu = cpuid;
+#endif
 
 	u64_t *last_tsc, *last_idle;
 
diff --git a/kernel/arch/i386/arch_system.c b/kernel/arch/i386/arch_system.c
index ddd7278a9..1cb68c52b 100644
--- a/kernel/arch/i386/arch_system.c
+++ b/kernel/arch/i386/arch_system.c
@@ -634,23 +634,6 @@ PUBLIC void arch_ack_profile_clock(void)
 
 #define COLOR_BASE	0xB8000L
 
-PRIVATE void cons_setc(const int pos, const int c)
-{
-	char ch;
-
-	ch= c;
-	phys_copy(vir2phys((vir_bytes)&ch), COLOR_BASE+(20*80+pos)*2, 1);
-}
-
-PRIVATE void cons_seth(int pos, int n)
-{
-	n &= 0xf;
-	if (n < 10)
-		cons_setc(pos, '0'+n);
-	else
-		cons_setc(pos, 'A'+(n-10));
-}
-
 /* Saved by mpx386.s into these variables. */
 u32_t params_size, params_offset, mon_ds;
 
diff --git a/kernel/arch/i386/breakpoints.c b/kernel/arch/i386/breakpoints.c
index a16bd9429..8850a842d 100644
--- a/kernel/arch/i386/breakpoints.c
+++ b/kernel/arch/i386/breakpoints.c
@@ -3,7 +3,7 @@
 
 #include "debugreg.h"
 
-PRIVATE int breakpoint_set(phys_bytes linaddr, int bp, const int flags)
+PUBLIC int breakpoint_set(phys_bytes linaddr, int bp, const int flags)
 {
 	unsigned long dr7, dr7flags;
 	
diff --git a/kernel/arch/i386/i8259.c b/kernel/arch/i386/i8259.c
index 0cdd2f6cb..53711b661 100644
--- a/kernel/arch/i386/i8259.c
+++ b/kernel/arch/i386/i8259.c
@@ -8,6 +8,7 @@
 #include "kernel/kernel.h"
 #include "kernel/proc.h"
 #include "arch_proto.h"
+#include "hw_intr.h"
 #include <minix/portio.h>
 #include <machine/cpu.h>
 
diff --git a/kernel/arch/i386/include/hw_intr.h b/kernel/arch/i386/include/hw_intr.h
index f918a3337..f49cb2b09 100644
--- a/kernel/arch/i386/include/hw_intr.h
+++ b/kernel/arch/i386/include/hw_intr.h
@@ -2,11 +2,13 @@
 #define __HW_INTR_X86_H__
 
 #include "kernel/kernel.h"
-_PROTOTYPE(int irq_8259_unmask,(int irq));
-_PROTOTYPE(int irq_8259_mask,(int irq));
-_PROTOTYPE(int irq_8259_eoi, (int irq));
+_PROTOTYPE(void irq_8259_unmask,(int irq));
+_PROTOTYPE(void irq_8259_mask,(int irq));
+_PROTOTYPE(void irq_8259_eoi, (int irq));
 _PROTOTYPE(void irq_handle,(int irq));
 _PROTOTYPE(void i8259_disable,(void));
+_PROTOTYPE(void eoi_8259_master,(void));
+_PROTOTYPE(void eoi_8259_slave,(void));
 
 /* 
  * we don't use IO APIC if not configured for SMP as we cannot read any info
diff --git a/kernel/arch/i386/memory.c b/kernel/arch/i386/memory.c
index 39c3f28f8..1ae63bc69 100644
--- a/kernel/arch/i386/memory.c
+++ b/kernel/arch/i386/memory.c
@@ -225,6 +225,7 @@ PRIVATE u32_t phys_get32(phys_bytes addr)
 	return v;
 }
 
+#if 0
 PRIVATE char *cr0_str(u32_t e)
 {
 	static char str[80];
@@ -256,6 +257,7 @@ PRIVATE char *cr4_str(u32_t e)
 	if(e) { strcat(str, " (++)"); }
 	return str;
 }
+#endif
 
 PUBLIC void vm_stop(void)
 {
@@ -531,7 +533,6 @@ PRIVATE void vm_suspend(struct proc *caller, const struct proc *target,
  *===========================================================================*/
 PUBLIC void delivermsg(struct proc *rp)
 {
-	phys_bytes addr;  
 	int r;
 
 	assert(rp->p_misc_flags & MF_DELIVERMSG);
@@ -557,6 +558,7 @@ PUBLIC void delivermsg(struct proc *rp)
 	}
 }
 
+#if 0
 PRIVATE char *flagstr(u32_t e, const int dir)
 {
 	static char str[80];
@@ -627,6 +629,7 @@ PRIVATE void vm_print(u32_t *root)
 
 	return;
 }
+#endif
 
 /*===========================================================================*
  *				lin_memset				     *
diff --git a/kernel/arch/i386/pre_init.c b/kernel/arch/i386/pre_init.c
index 2d0898a09..5746c5c4f 100644
--- a/kernel/arch/i386/pre_init.c
+++ b/kernel/arch/i386/pre_init.c
@@ -42,27 +42,6 @@ phys_bytes mulitboot_modules_addr;
 
 FORWARD _PROTOTYPE(void mb_print, (char *str));
 
-PRIVATE void mb_phys_move(u32_t src, u32_t dest, u32_t len) 
-{
-	char data[GRAN + 1];
-	int i;
-	/* Move upward (start moving from tail), block by block 
-	* len should be aligned to GRAN 
-	*/
-	if (len % GRAN) {
-		mb_print("fatal: not aligned phys move");
-		/* Spin here */
-		while (1)
-			;
-	}
-
-	len /= GRAN;
-	for (i = len - 1; i >= 0; i--) {
-		mb_load_phymem(data, src + i * GRAN, GRAN);
-		mb_save_phymem(data, dest + i * GRAN, GRAN);
-	}
-}
-
 PRIVATE void mb_itoa(u32_t val, char * out) 
 {
 	char ret[ITOA_BUFFER_SIZE];
@@ -244,7 +223,7 @@ PRIVATE int mb_set_param(char *name, char *value)
 PRIVATE void get_parameters(multiboot_info_t *mbi) 
 {
 	char mem_value[40], temp[ITOA_BUFFER_SIZE];
-	int i, r, processor;
+	int i, processor;
 	int dev;
 	int ctrlr;
 	int disk, prim, sub;
@@ -386,8 +365,6 @@ PRIVATE void mb_extract_image(multiboot_info_t mbi)
 
 	/* Load boot image services into memory and save memory map */
 	for (i = 0; module < &mb_module_info[mods_count]; ++module, ++i) {
-	    char zero = 0;
-
 	    r = read_header_elf((const char *)module->mod_start,
 				&text_vaddr, &text_paddr,
 				&text_filebytes, &text_membytes,
diff --git a/kernel/arch/i386/protect.c b/kernel/arch/i386/protect.c
index d7c4abbdc..f28175ca4 100644
--- a/kernel/arch/i386/protect.c
+++ b/kernel/arch/i386/protect.c
@@ -72,18 +72,6 @@ PUBLIC phys_bytes seg2phys(const u16_t seg)
   return base;
 }
 
-/*===========================================================================*
- *				phys2seg				     *
- *===========================================================================*/
-PRIVATE void phys2seg(u16_t *seg, vir_bytes *off, phys_bytes phys)
-{
-/* Return a segment selector and offset that can be used to reach a physical
- * address, for use by a driver doing memory I/O in the A0000 - DFFFF range.
- */
-  *seg = FLAT_DS_SELECTOR;
-  *off = (vir_bytes) phys;
-}
-
 /*===========================================================================*
  *				init_dataseg				     *
  *===========================================================================*/
@@ -330,6 +318,7 @@ PUBLIC void alloc_segments(register struct proc *rp)
       rp->p_reg.ds = (DS_LDT_INDEX*DESC_SIZE) | TI | privilege;
 }
 
+#if 0
 /*===========================================================================*
  *				check_segments				     *
  *===========================================================================*/
@@ -369,6 +358,7 @@ for (rp = BEG_PROC_ADDR; rp < END_PROC_ADDR; ++rp) {
      	panic("wrong: %d",  fail);
      }
 }
+#endif
 
 /*===========================================================================*
  *				printseg			     *
diff --git a/kernel/clock.c b/kernel/clock.c
index bd0c2dc6d..4f2b3464c 100644
--- a/kernel/clock.c
+++ b/kernel/clock.c
@@ -238,4 +238,6 @@ PUBLIC int app_cpu_init_timer(unsigned freq)
 {
 	if (init_local_timer(freq))
 		return -1;
+
+	return 0;
 }
diff --git a/kernel/debug.c b/kernel/debug.c
index f11b49d62..45506efaa 100644
--- a/kernel/debug.c
+++ b/kernel/debug.c
@@ -257,7 +257,6 @@ print_sigmgr(struct proc *pp)
 
 PUBLIC void print_proc(struct proc *pp)
 {
-	struct proc *depproc = NULL;
 	endpoint_t dep;
 
 	printf("%d: %s %d prio %d time %d/%d cycles 0x%x%08x cpu %2d "
diff --git a/kernel/main.c b/kernel/main.c
index 9d58b41ce..cd6eedd2d 100644
--- a/kernel/main.c
+++ b/kernel/main.c
@@ -20,6 +20,7 @@
 #include "debug.h"
 #include "clock.h"
 #include "hw_intr.h"
+#include "arch_proto.h"
 
 #ifdef CONFIG_SMP
 #include "smp.h"
@@ -126,10 +127,10 @@ PUBLIC int main(void)
   struct boot_image *ip;	/* boot image pointer */
   register struct proc *rp;	/* process pointer */
   register int i, j;
-  phys_clicks text_base;
-  vir_clicks text_clicks, data_clicks, st_clicks;
   size_t argsz;			/* size of arguments passed to crtso on stack */
 #if !defined(__ELF__)
+  vir_clicks text_clicks, data_clicks, st_clicks;
+  phys_clicks text_base;
   int hdrindex;			/* index to array of a.out headers */
   struct exec e_hdr;		/* for a copy of an a.out header */
 #endif
diff --git a/kernel/proc.c b/kernel/proc.c
index 015150afc..a126844c4 100644
--- a/kernel/proc.c
+++ b/kernel/proc.c
@@ -845,7 +845,7 @@ PRIVATE int mini_receive(struct proc * caller_ptr,
  */
   register struct proc **xpp;
   sys_map_t *map;
-  int i, r, src_id, src_proc_nr, src_p;
+  int r, src_id, src_proc_nr, src_p;
 
   assert(!(caller_ptr->p_misc_flags & MF_DELIVERMSG));
 
@@ -1227,7 +1227,7 @@ struct proc *caller_ptr;
 PRIVATE int try_one(struct proc *src_ptr, struct proc *dst_ptr)
 {
 /* Try to receive an asynchronous message from 'src_ptr' */
-  int r = EAGAIN, done, do_notify, pending_recv = FALSE;
+  int r = EAGAIN, done, do_notify;
   unsigned int flags, i;
   size_t size;
   endpoint_t dst;
@@ -1331,7 +1331,7 @@ PUBLIC int cancel_async(struct proc *src_ptr, struct proc *dst_ptr)
 {
 /* Cancel asynchronous messages from src to dst, because dst is not interested
  * in them (e.g., dst has been restarted) */
-  int done, do_notify, pending_recv = FALSE;
+  int done, do_notify;
   unsigned int flags, i;
   size_t size;
   endpoint_t dst;
diff --git a/kernel/profile.c b/kernel/profile.c
index 5cc8ce443..1b2973ffd 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -63,7 +63,7 @@ PUBLIC void stop_profile_clock()
   rm_irq_handler(&profile_clock_hook);
 }
 
-PRIVATE sprof_save_sample(struct proc * p, void * pc)
+PRIVATE void sprof_save_sample(struct proc * p, void * pc)
 {
 	struct sprof_sample *s;
 
@@ -75,7 +75,7 @@ PRIVATE sprof_save_sample(struct proc * p, void * pc)
 	sprof_info.mem_used += sizeof(struct sprof_sample);
 }
 
-PRIVATE sprof_save_proc(struct proc * p)
+PRIVATE void sprof_save_proc(struct proc * p)
 {
 	struct sprof_proc * s;
 
diff --git a/kernel/proto.h b/kernel/proto.h
index 5356ac7b0..526f7ed74 100644
--- a/kernel/proto.h
+++ b/kernel/proto.h
@@ -226,6 +226,8 @@ _PROTOTYPE(void release_address_space, (struct proc *pr));
 _PROTOTYPE(void enable_fpu_exception, (void));
 _PROTOTYPE(void disable_fpu_exception, (void));
 _PROTOTYPE(void release_fpu, (struct proc * p));
+_PROTOTYPE(void arch_pause,(void));
+_PROTOTYPE(short cpu_load, (void));
 
 /* utility.c */
 _PROTOTYPE( void cpu_print_freq, (unsigned cpu));
diff --git a/kernel/system.c b/kernel/system.c
index ce10b9a8b..d3d83a2d9 100644
--- a/kernel/system.c
+++ b/kernel/system.c
@@ -54,9 +54,10 @@
  */
 PRIVATE int (*call_vec[NR_SYS_CALLS])(struct proc * caller, message *m_ptr);
 
-#define map(call_nr, handler) \
-    {extern int dummy[NR_SYS_CALLS>(unsigned)(call_nr-KERNEL_CALL) ? 1:-1];} \
-    call_vec[(call_nr-KERNEL_CALL)] = (handler)  
+#define map(call_nr, handler) 					\
+    {	int call_index = call_nr-KERNEL_CALL; 				\
+    	assert(call_index >= 0 && call_index < NR_SYS_CALLS);			\
+    call_vec[call_index] = (handler)  ; }
 
 PRIVATE void kernel_call_finish(struct proc * caller, message *msg, int result)
 {
diff --git a/kernel/system/do_getinfo.c b/kernel/system/do_getinfo.c
index 057448ab0..08887303b 100644
--- a/kernel/system/do_getinfo.c
+++ b/kernel/system/do_getinfo.c
@@ -44,7 +44,9 @@ PUBLIC int do_getinfo(struct proc * caller, message * m_ptr)
   vir_bytes src_vir; 
   int nr_e, nr, r;
   int wipe_rnd_bin = -1;
+#if !defined(__ELF__)
   struct exec e_hdr;
+#endif
 
   /* Set source address and length based on request type. */
   switch (m_ptr->I_REQUEST) {
diff --git a/kernel/system/do_sprofile.c b/kernel/system/do_sprofile.c
index e5aebc821..f0c50b29f 100644
--- a/kernel/system/do_sprofile.c
+++ b/kernel/system/do_sprofile.c
@@ -14,13 +14,14 @@
  */
 
 #include "kernel/system.h"
+#include "watchdog.h"
 
 #if SPROFILE
 
 /* user address to write info struct */
 PRIVATE vir_bytes sprof_info_addr_vir;
 
-PRIVATE clean_seen_flag(void)
+PRIVATE void clean_seen_flag(void)
 {
 	int i;
 
diff --git a/servers/ext2/main.c b/servers/ext2/main.c
index ff84bab51..9d025a033 100644
--- a/servers/ext2/main.c
+++ b/servers/ext2/main.c
@@ -16,7 +16,6 @@
 
 /* Declare some local functions. */
 FORWARD _PROTOTYPE(void get_work, (message *m_in)			);
-FORWARD _PROTOTYPE(void cch_check, (void)				);
 FORWARD _PROTOTYPE( void reply, (endpoint_t who, message *m_out)		);
 
 /* SEF functions and variables. */
@@ -83,7 +82,6 @@ PUBLIC int main(int argc, char *argv[])
 		error = EINVAL;
 	} else {
 		error = (*fs_call_vec[ind])();
-		/*cch_check();*/
 	}
 
 	fs_m_out.m_type = error;
@@ -209,23 +207,3 @@ PRIVATE void reply(
   if (OK != send(who, m_out))    /* send the message */
 	printf("ext2(%d) was unable to send reply\n", SELF_E);
 }
-
-
-/*===========================================================================*
- *				cch_check				     *
- *===========================================================================*/
-PRIVATE void cch_check(void)
-{
-  int i;
-
-  for (i = 0; i < NR_INODES; ++i) {
-	if (inode[i].i_count != cch[i] && req_nr != REQ_GETNODE &&
-	    req_nr != REQ_PUTNODE && req_nr != REQ_READSUPER &&
-	    req_nr != REQ_MOUNTPOINT && req_nr != REQ_UNMOUNT &&
-	    req_nr != REQ_SYNC && req_nr != REQ_LOOKUP) {
-		printf("ext2(%d) inode(%ul) cc: %d req_nr: %d\n", SELF_E,
-			inode[i].i_num, inode[i].i_count - cch[i], req_nr);
-	}
-	cch[i] = inode[i].i_count;
-  }
-}
diff --git a/servers/ext2/misc.c b/servers/ext2/misc.c
index 1bdba2080..435637ebf 100644
--- a/servers/ext2/misc.c
+++ b/servers/ext2/misc.c
@@ -20,7 +20,6 @@ PUBLIC int fs_sync()
  */
   struct inode *rip;
   struct buf *bp;
-  int r;
 
   assert(nr_bufs > 0);
   assert(buf);
diff --git a/servers/ext2/read.c b/servers/ext2/read.c
index 0e177eb79..59c5025e3 100644
--- a/servers/ext2/read.c
+++ b/servers/ext2/read.c
@@ -551,7 +551,6 @@ PUBLIC int fs_getdents(void)
   struct buf *bp;
   struct ext2_disk_dir_desc *d_desc;
   struct dirent *dep;
-  char *cp;
 
   ino = (ino_t) fs_m_in.REQ_INODE_NR;
   gid = (gid_t) fs_m_in.REQ_GRANT;
diff --git a/servers/hgfs/main.c b/servers/hgfs/main.c
index 84a1b1c1b..d2eca76d1 100644
--- a/servers/hgfs/main.c
+++ b/servers/hgfs/main.c
@@ -43,7 +43,6 @@ sef_init_info_t *info;
 {
 /* Initialize this file server. Called at startup time.
  */
-  message m;
   int i, r;
 
   /* Defaults */
diff --git a/servers/ipc/sem.c b/servers/ipc/sem.c
index baddc6201..a237f987a 100644
--- a/servers/ipc/sem.c
+++ b/servers/ipc/sem.c
@@ -128,6 +128,7 @@ PRIVATE void remove_semaphore(struct sem_struct *sem)
 		sem_list[i] = sem_list[sem_list_nr];
 }
 
+#if 0
 PRIVATE void show_semaphore(void)
 {
 	int i, j, k;
@@ -161,6 +162,7 @@ PRIVATE void show_semaphore(void)
 	}
 	printf("\n");
 }
+#endif
 
 PRIVATE void remove_process(endpoint_t pt)
 {
diff --git a/servers/ipc/shm.c b/servers/ipc/shm.c
index 298e4c717..d94d641b3 100644
--- a/servers/ipc/shm.c
+++ b/servers/ipc/shm.c
@@ -327,6 +327,7 @@ PUBLIC int do_shmctl(message *m)
 	return OK;
 }
 
+#if 0
 PRIVATE void list_shm_ds(void)
 {
 	int i;
@@ -337,6 +338,7 @@ PRIVATE void list_shm_ds(void)
 			shm_list[i].id,
 			shm_list[i].page);
 }
+#endif
 
 /*===========================================================================*
  *				is_shm_nil		     		     *
diff --git a/servers/iso9660fs/device.c b/servers/iso9660fs/device.c
index c09e624e6..440d258ef 100644
--- a/servers/iso9660fs/device.c
+++ b/servers/iso9660fs/device.c
@@ -1,8 +1,6 @@
 #include "inc.h"
 #include <minix/vfsif.h>
 
-PRIVATE int dummyproc;
-
 FORWARD _PROTOTYPE( int safe_io_conversion, (endpoint_t, cp_grant_id_t *,
 					     int *, cp_grant_id_t *, int,
 					     endpoint_t *, void **, int *,
diff --git a/servers/mfs/cache.c b/servers/mfs/cache.c
index 675b20824..2833f94dd 100644
--- a/servers/mfs/cache.c
+++ b/servers/mfs/cache.c
@@ -546,7 +546,6 @@ PRIVATE void cache_resize(unsigned int blocksize, unsigned int bufs)
 {
   struct buf *bp;
   struct inode *rip;
-  int scale, r;
 
 #define MINBUFS 10
   assert(blocksize > 0);
@@ -569,7 +568,7 @@ PRIVATE void cache_resize(unsigned int blocksize, unsigned int bufs)
 PRIVATE int bufs_heuristic(struct super_block *sp)
 {
   struct vm_stats_info vsi;
-  int r, bufs;
+  int bufs;
   u32_t btotal, bfree, bused, kbytes_used_fs,
 	kbytes_total_fs, kbcache, kb_fsmax;
   u32_t kbytes_remain_mem;
diff --git a/servers/mfs/main.c b/servers/mfs/main.c
index eb1a9426b..c6576751f 100644
--- a/servers/mfs/main.c
+++ b/servers/mfs/main.c
@@ -14,7 +14,6 @@
 
 /* Declare some local functions. */
 FORWARD _PROTOTYPE(void get_work, (message *m_in)			);
-FORWARD _PROTOTYPE(void cch_check, (void)				);
 FORWARD _PROTOTYPE( void reply, (endpoint_t who, message *m_out)		);
 
 /* SEF functions and variables. */
@@ -178,6 +177,7 @@ PRIVATE void reply(
 }
 
 
+#if 0
 /*===========================================================================*
  *				cch_check				     *	
  *===========================================================================*/
@@ -197,4 +197,5 @@ PRIVATE void cch_check(void)
 	cch[i] = inode[i].i_count;
   }
 }
+#endif
 
diff --git a/servers/pm/misc.c b/servers/pm/misc.c
index fa5a2f2a1..aa620f5b6 100644
--- a/servers/pm/misc.c
+++ b/servers/pm/misc.c
@@ -154,13 +154,10 @@ PUBLIC int do_sysuname()
  *===========================================================================*/
 PUBLIC int do_getsysinfo()
 {
-  struct mproc *proc_addr;
   vir_bytes src_addr, dst_addr;
-  struct kinfo kinfo;
   struct loadinfo loadinfo;
-  static struct proc proctab[NR_PROCS+NR_TASKS];
   size_t len;
-  int s, r;
+  int s;
 
   /* This call leaks important information (the contents of registers). */
   if (mp->mp_effuid != 0)
diff --git a/servers/sched/schedule.c b/servers/sched/schedule.c
index 39e8986e7..f949b0ad2 100644
--- a/servers/sched/schedule.c
+++ b/servers/sched/schedule.c
@@ -116,7 +116,7 @@ PUBLIC int do_noquantum(message *m_ptr)
 PUBLIC int do_stop_scheduling(message *m_ptr)
 {
 	register struct schedproc *rmp;
-	int rv, proc_nr_n;
+	int proc_nr_n;
 
 	/* check who can send you requests */
 	if (!accept_message(m_ptr))
@@ -143,7 +143,7 @@ PUBLIC int do_stop_scheduling(message *m_ptr)
 PUBLIC int do_start_scheduling(message *m_ptr)
 {
 	register struct schedproc *rmp;
-	int rv, proc_nr_n, parent_nr_n, nice;
+	int rv, proc_nr_n, parent_nr_n;
 	
 	/* we can handle two kinds of messages here */
 	assert(m_ptr->m_type == SCHEDULING_START || 
@@ -353,7 +353,6 @@ PRIVATE void balance_queues(struct timer *tp)
 {
 	struct schedproc *rmp;
 	int proc_nr;
-	int rv;
 
 	for (proc_nr=0, rmp=schedproc; proc_nr < NR_PROCS; proc_nr++, rmp++) {
 		if (rmp->flags & IN_USE) {
diff --git a/servers/vfs/select.c b/servers/vfs/select.c
index 653929fa1..664629120 100644
--- a/servers/vfs/select.c
+++ b/servers/vfs/select.c
@@ -200,7 +200,7 @@ PUBLIC int do_select(void)
 
   /* Check all file descriptors in the set whether one is 'ready' now */
   for (fd = 0; fd < nfds; fd++) {
-	int type, ops, r;
+	int ops, r;
 	struct filp *f;
 	
 	/* Again, check for involuntarily selected fd's */
@@ -211,7 +211,7 @@ PUBLIC int do_select(void)
 	 * processes sharing a filp and both doing a select on that filp. */
 	f = se->filps[fd];
 	if ((f->filp_select_ops & ops) != ops) {
-		int wantops, type, block;
+		int wantops;
 
 		wantops = (f->filp_select_ops |= ops);
 		r = do_select_request(se, fd, &wantops);
@@ -911,7 +911,7 @@ PRIVATE void select_restart_filps()
 	 * select request to be sent again).
 	 */
 	for (fd = 0; fd < se->nfds; fd++) {
-		int r, type, wantops, ops, block;
+		int r, wantops, ops;
 		if ((f = se->filps[fd]) == NULL) continue;
 		if (f->filp_select_flags & FSF_BUSY) /* Still waiting for */
 			continue;		     /* initial reply */
-- 
2.44.0