kernel: 64-bit offsets for VFS

Makefile

@@ -66,7 +66,7 @@ KCC = $(TARGET_TRIPLET)-gcc
 LGCC = -lgcc
 else
 KCC = clang --target=i686-elf -static -Ibase/usr/include -nostdinc -mno-sse
-LGCC = 
+LGCC = -lgcc
 endif
 KAS = $(TARGET_TRIPLET)-as
 KLD = $(TARGET_TRIPLET)-ld

base/usr/include/kernel/fs.h

@@ -37,8 +37,8 @@
 
 struct fs_node;
 
-typedef uint32_t (*read_type_t) (struct fs_node *, uint32_t, uint32_t, uint8_t *);
-typedef uint32_t (*write_type_t) (struct fs_node *, uint32_t, uint32_t, uint8_t *);
+typedef uint32_t (*read_type_t) (struct fs_node *, uint64_t, uint32_t, uint8_t *);
+typedef uint32_t (*write_type_t) (struct fs_node *, uint64_t, uint32_t, uint8_t *);
 typedef void (*open_type_t) (struct fs_node *, unsigned int flags);
 typedef void (*close_type_t) (struct fs_node *);
 typedef struct dirent *(*readdir_type_t) (struct fs_node *, uint32_t);
@@ -135,8 +135,8 @@ extern fs_node_t *fs_root;
 extern int pty_create(void *size, fs_node_t ** fs_master, fs_node_t ** fs_slave);
 
 int has_permission(fs_node_t *node, int permission_bit);
-uint32_t read_fs(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
-uint32_t write_fs(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
+uint32_t read_fs(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer);
+uint32_t write_fs(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer);
 void open_fs(fs_node_t *node, unsigned int flags);
 void close_fs(fs_node_t *node);
 struct dirent *readdir_fs(fs_node_t *node, uint32_t index);

base/usr/include/kernel/process.h

@@ -53,7 +53,7 @@ typedef struct image {
 /* Resizable descriptor table */
 typedef struct descriptor_table {
 	fs_node_t ** entries;
-	size_t    *  offsets;
+	uint64_t  *  offsets;
 	int       *  modes;
 	size_t       length;
 	size_t       capacity;

kernel/fs/pipe.c

@@ -15,11 +15,6 @@
 
 #define DEBUG_PIPES 0
 
-uint32_t read_pipe(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
-uint32_t write_pipe(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
-void open_pipe(fs_node_t *node, unsigned int flags);
-void close_pipe(fs_node_t *node);
-
 static inline size_t pipe_unread(pipe_device_t * pipe) {
 	if (pipe->read_ptr == pipe->write_ptr) {
 		return 0;
@@ -82,7 +77,7 @@ static void pipe_alert_waiters(pipe_device_t * pipe) {
 	}
 }
 
-uint32_t read_pipe(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+uint32_t read_pipe(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	assert(node->device != 0 && "Attempted to read from a fully-closed pipe.");
 
 	/* Retreive the pipe object associated with this file node */
@@ -125,7 +120,7 @@ uint32_t read_pipe(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buf
 	return collected;
 }
 
-uint32_t write_pipe(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+uint32_t write_pipe(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	assert(node->device != 0 && "Attempted to write to a fully-closed pipe.");
 
 	/* Retreive the pipe object associated with this file node */

kernel/fs/ramdisk.c

@@ -15,12 +15,12 @@
 #include <kernel/printf.h>
 #include <kernel/mem.h>
 
-static uint32_t read_ramdisk(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
-static uint32_t write_ramdisk(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
+static uint32_t read_ramdisk(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer);
+static uint32_t write_ramdisk(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer);
 static void     open_ramdisk(fs_node_t *node, unsigned int flags);
 static void     close_ramdisk(fs_node_t *node);
 
-static uint32_t read_ramdisk(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t read_ramdisk(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 
 	if (offset > node->length) {
 		return 0;
@@ -31,12 +31,12 @@ static uint32_t read_ramdisk(fs_node_t *node, uint32_t offset, uint32_t size, ui
 		size = i;
 	}
 
-	memcpy(buffer, (void *)(node->inode + offset), size);
+	memcpy(buffer, (void *)(node->inode + (uintptr_t)offset), size);
 
 	return size;
 }
 
-static uint32_t write_ramdisk(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t write_ramdisk(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	if (offset > node->length) {
 		return 0;
 	}
@@ -46,7 +46,7 @@ static uint32_t write_ramdisk(fs_node_t *node, uint32_t offset, uint32_t size, u
 		size = i;
 	}
 
-	memcpy((void *)(node->inode + offset), buffer, size);
+	memcpy((void *)(node->inode + (uintptr_t)offset), buffer, size);
 	return size;
 }
 

kernel/fs/tty.c

@@ -317,13 +317,13 @@ int pty_ioctl(pty_t * pty, int request, void * argp) {
 	}
 }
 
-uint32_t  read_pty_master(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+uint32_t  read_pty_master(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	pty_t * pty = (pty_t *)node->device;
 
 	/* Standard pipe read */
 	return ring_buffer_read(pty->out, size, buffer);
 }
-uint32_t write_pty_master(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+uint32_t write_pty_master(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	pty_t * pty = (pty_t *)node->device;
 
 	size_t l = 0;
@@ -340,7 +340,7 @@ void     close_pty_master(fs_node_t * node) {
 	return;
 }
 
-uint32_t  read_pty_slave(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+uint32_t  read_pty_slave(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	pty_t * pty = (pty_t *)node->device;
 
 	if (pty->tios.c_lflag & ICANON) {
@@ -354,7 +354,7 @@ uint32_t  read_pty_slave(fs_node_t * node, uint32_t offset, uint32_t size, uint8
 	}
 }
 
-uint32_t write_pty_slave(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+uint32_t write_pty_slave(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	pty_t * pty = (pty_t *)node->device;
 
 	size_t l = 0;

kernel/fs/unixpipe.c

@@ -28,7 +28,7 @@ static void close_complete(struct unix_pipe * self) {
 	ring_buffer_destroy(self->buffer);
 }
 
-static uint32_t read_unixpipe(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t read_unixpipe(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	struct unix_pipe * self = node->device;
 	size_t read = 0;
 
@@ -46,7 +46,7 @@ static uint32_t read_unixpipe(fs_node_t * node, uint32_t offset, uint32_t size,
 	return read;
 }
 
-static uint32_t write_unixpipe(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t write_unixpipe(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	struct unix_pipe * self = node->device;
 	size_t written = 0;
 

kernel/fs/vfs.c

@@ -132,7 +132,7 @@ int selectwait_fs(fs_node_t * node, void * process) {
  * @param buffer  A buffer to copy of the read data into
  * @returns Bytes read
  */
-uint32_t read_fs(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+uint32_t read_fs(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	if (!node) return -ENOENT;
 
 	if (node->read) {
@@ -152,7 +152,7 @@ uint32_t read_fs(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffe
  * @param buffer  A buffer to copy from
  * @returns Bytes written
  */
-uint32_t write_fs(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+uint32_t write_fs(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	if (!node) return -ENOENT;
 
 	if (node->write) {

kernel/misc/lgcc.c

@@ -0,0 +1,11 @@
+/* Garbage */
+
+#include <kernel/system.h>
+
+#define USES(func) void * _USES_ ## func (void) { return (void*)(uintptr_t)&func; }
+
+extern unsigned long __umoddi3 (unsigned long a, unsigned long b);
+USES(__umoddi3)
+
+extern unsigned long __udivdi3 (unsigned long a, unsigned long b);
+USES(__udivdi3)

kernel/misc/ubsan.c

@@ -7,7 +7,7 @@
 #include <va_list.h>
 
 #define EARLY_LOG_DEVICE 0x3F8
-static uint32_t _ubsan_log_write(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t _ubsan_log_write(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	for (unsigned int i = 0; i < size; ++i) {
 		outportb(EARLY_LOG_DEVICE, buffer[i]);
 	}

kernel/sys/process.c

@@ -280,7 +280,7 @@ process_t * spawn_init(void) {
 	init->fds->capacity = 4;
 	init->fds->entries  = malloc(sizeof(fs_node_t *) * init->fds->capacity);
 	init->fds->modes    = malloc(sizeof(int) * init->fds->capacity);
-	init->fds->offsets  = malloc(sizeof(size_t) * init->fds->capacity);
+	init->fds->offsets  = malloc(sizeof(uint64_t) * init->fds->capacity);
 
 	/* Set the working directory */
 	init->wd_node = clone_fs(fs_root);
@@ -431,7 +431,7 @@ process_t * spawn_process(volatile process_t * parent, int reuse_fds) {
 		debug_print(INFO,"    fds / files {");
 		proc->fds->entries  = malloc(sizeof(fs_node_t *) * proc->fds->capacity);
 		proc->fds->modes    = malloc(sizeof(int) * proc->fds->capacity);
-		proc->fds->offsets  = malloc(sizeof(size_t) * proc->fds->capacity);
+		proc->fds->offsets  = malloc(sizeof(uint64_t) * proc->fds->capacity);
 		assert(proc->fds->entries && "Failed to allocate file descriptor table for new process.");
 		debug_print(INFO,"    ---");
 		for (uint32_t i = 0; i < parent->fds->length; ++i) {
@@ -600,7 +600,7 @@ uint32_t process_append_fd(process_t * proc, fs_node_t * node) {
 		proc->fds->capacity *= 2;
 		proc->fds->entries = realloc(proc->fds->entries, sizeof(fs_node_t *) * proc->fds->capacity);
 		proc->fds->modes   = realloc(proc->fds->modes,   sizeof(int) * proc->fds->capacity);
-		proc->fds->offsets = realloc(proc->fds->offsets, sizeof(size_t) * proc->fds->capacity);
+		proc->fds->offsets = realloc(proc->fds->offsets, sizeof(uint64_t) * proc->fds->capacity);
 	}
 	proc->fds->entries[proc->fds->length] = node;
 	/* modes, offsets must be set by caller */

kernel/sys/version.c

@@ -17,8 +17,8 @@ char * __kernel_version_format = "%d.%d.%d-%s";
 
 /* Version numbers X.Y.Z */
 int    __kernel_version_major = 1;
-int    __kernel_version_minor = 8;
-int    __kernel_version_lower = 2;
+int    __kernel_version_minor = 9;
+int    __kernel_version_lower = 0;
 
 /* Kernel build suffix, which doesn't necessarily
  * mean anything, but can be used to distinguish

modules/ata.c

@@ -70,11 +70,11 @@ static spin_lock_t ata_lock = { 0 };
 /* TODO support other sector sizes */
 #define ATA_SECTOR_SIZE 512
 
-static void ata_device_read_sector(struct ata_device * dev, uint32_t lba, uint8_t * buf);
-static void ata_device_read_sector_atapi(struct ata_device * dev, uint32_t lba, uint8_t * buf);
-static void ata_device_write_sector_retry(struct ata_device * dev, uint32_t lba, uint8_t * buf);
-static uint32_t read_ata(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
-static uint32_t write_ata(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
+static void ata_device_read_sector(struct ata_device * dev, uint64_t lba, uint8_t * buf);
+static void ata_device_read_sector_atapi(struct ata_device * dev, uint64_t lba, uint8_t * buf);
+static void ata_device_write_sector_retry(struct ata_device * dev, uint64_t lba, uint8_t * buf);
+static uint32_t read_ata(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer);
+static uint32_t write_ata(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer);
 static void     open_ata(fs_node_t *node, unsigned int flags);
 static void     close_ata(fs_node_t *node);
 
@@ -96,7 +96,7 @@ static uint64_t atapi_max_offset(struct ata_device * dev) {
 	return (max_sector + 1) * dev->atapi_sector_size;
 }
 
-static uint32_t read_ata(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t read_ata(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 
 	struct ata_device * dev = (struct ata_device *)node->device;
 
@@ -119,7 +119,7 @@ static uint32_t read_ata(fs_node_t *node, uint32_t offset, uint32_t size, uint8_
 		char * tmp = malloc(ATA_SECTOR_SIZE);
 		ata_device_read_sector(dev, start_block, (uint8_t *)tmp);
 
-		memcpy(buffer, (void *)((uintptr_t)tmp + (offset % ATA_SECTOR_SIZE)), prefix_size);
+		memcpy(buffer, (void *)((uintptr_t)tmp + ((uintptr_t)offset % ATA_SECTOR_SIZE)), prefix_size);
 
 		free(tmp);
 
@@ -148,7 +148,7 @@ static uint32_t read_ata(fs_node_t *node, uint32_t offset, uint32_t size, uint8_
 	return size;
 }
 
-static uint32_t read_atapi(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t read_atapi(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 
 	struct ata_device * dev = (struct ata_device *)node->device;
 
@@ -171,7 +171,7 @@ static uint32_t read_atapi(fs_node_t *node, uint32_t offset, uint32_t size, uint
 		char * tmp = malloc(dev->atapi_sector_size);
 		ata_device_read_sector_atapi(dev, start_block, (uint8_t *)tmp);
 
-		memcpy(buffer, (void *)((uintptr_t)tmp + (offset % dev->atapi_sector_size)), prefix_size);
+		memcpy(buffer, (void *)((uintptr_t)tmp + ((uintptr_t)offset % dev->atapi_sector_size)), prefix_size);
 
 		free(tmp);
 
@@ -201,7 +201,7 @@ static uint32_t read_atapi(fs_node_t *node, uint32_t offset, uint32_t size, uint
 }
 
 
-static uint32_t write_ata(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t write_ata(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	struct ata_device * dev = (struct ata_device *)node->device;
 
 	unsigned int start_block = offset / ATA_SECTOR_SIZE;
@@ -226,7 +226,7 @@ static uint32_t write_ata(fs_node_t *node, uint32_t offset, uint32_t size, uint8
 
 		debug_print(NOTICE, "Writing first block");
 
-		memcpy((void *)((uintptr_t)tmp + (offset % ATA_SECTOR_SIZE)), buffer, prefix_size);
+		memcpy((void *)((uintptr_t)tmp + ((uintptr_t)offset % ATA_SECTOR_SIZE)), buffer, prefix_size);
 		ata_device_write_sector_retry(dev, start_block, (uint8_t *)tmp);
 
 		free(tmp);
@@ -606,7 +606,7 @@ static int ata_device_detect(struct ata_device * dev) {
 	return 0;
 }
 
-static void ata_device_read_sector(struct ata_device * dev, uint32_t lba, uint8_t * buf) {
+static void ata_device_read_sector(struct ata_device * dev, uint64_t lba, uint8_t * buf) {
 	uint16_t bus = dev->io_base;
 	uint8_t slave = dev->slave;
 
@@ -640,13 +640,17 @@ try_again:
 	}
 
 	outportb(bus + ATA_REG_CONTROL, 0x00);
-	outportb(bus + ATA_REG_HDDEVSEL, 0xe0 | slave << 4 | (lba & 0x0f000000) >> 24);
+	outportb(bus + ATA_REG_HDDEVSEL, 0xe0 | slave << 4);
 	ata_io_wait(dev);
 	outportb(bus + ATA_REG_FEATURES, 0x00);
 	outportb(bus + ATA_REG_SECCOUNT0, 1);
 	outportb(bus + ATA_REG_LBA0, (lba & 0x000000ff) >>  0);
 	outportb(bus + ATA_REG_LBA1, (lba & 0x0000ff00) >>  8);
 	outportb(bus + ATA_REG_LBA2, (lba & 0x00ff0000) >> 16);
+	outportb(bus + ATA_REG_LBA3, (lba & 0xff000000) >> 24);
+	outportb(bus + ATA_REG_LBA4, (lba & 0xff00000000) >> 32);
+	outportb(bus + ATA_REG_LBA5, (lba & 0xff0000000000) >> 40);
+
 	//outportb(bus + ATA_REG_COMMAND, ATA_CMD_READ_PIO);
 #if 1
 	while (1) {
@@ -700,7 +704,7 @@ try_again:
 	spin_unlock(ata_lock);
 }
 
-static void ata_device_read_sector_atapi(struct ata_device * dev, uint32_t lba, uint8_t * buf) {
+static void ata_device_read_sector_atapi(struct ata_device * dev, uint64_t lba, uint8_t * buf) {
 
 	if (!dev->is_atapi) return;
 
@@ -771,7 +775,7 @@ atapi_error_on_read_setup:
 
 }
 
-static void ata_device_write_sector(struct ata_device * dev, uint32_t lba, uint8_t * buf) {
+static void ata_device_write_sector(struct ata_device * dev, uint64_t lba, uint8_t * buf) {
 	uint16_t bus = dev->io_base;
 	uint8_t slave = dev->slave;
 
@@ -780,7 +784,7 @@ static void ata_device_write_sector(struct ata_device * dev, uint32_t lba, uint8
 	outportb(bus + ATA_REG_CONTROL, 0x02);
 
 	ata_wait(dev, 0);
-	outportb(bus + ATA_REG_HDDEVSEL, 0xe0 | slave << 4 | (lba & 0x0f000000) >> 24);
+	outportb(bus + ATA_REG_HDDEVSEL, 0xe0 | slave << 4);
 	ata_wait(dev, 0);
 
 	outportb(bus + ATA_REG_FEATURES, 0x00);
@@ -788,6 +792,10 @@ static void ata_device_write_sector(struct ata_device * dev, uint32_t lba, uint8
 	outportb(bus + ATA_REG_LBA0, (lba & 0x000000ff) >>  0);
 	outportb(bus + ATA_REG_LBA1, (lba & 0x0000ff00) >>  8);
 	outportb(bus + ATA_REG_LBA2, (lba & 0x00ff0000) >> 16);
+	outportb(bus + ATA_REG_LBA3, (lba & 0xff000000) >> 24);
+	outportb(bus + ATA_REG_LBA4, (lba & 0xff00000000) >> 32);
+	outportb(bus + ATA_REG_LBA5, (lba & 0xff0000000000) >> 40);
+
 	outportb(bus + ATA_REG_COMMAND, ATA_CMD_WRITE_PIO);
 	ata_wait(dev, 0);
 	int size = ATA_SECTOR_SIZE / 2;
@@ -809,7 +817,7 @@ static int buffer_compare(uint32_t * ptr1, uint32_t * ptr2, size_t size) {
 	return 0;
 }
 
-static void ata_device_write_sector_retry(struct ata_device * dev, uint32_t lba, uint8_t * buf) {
+static void ata_device_write_sector_retry(struct ata_device * dev, uint64_t lba, uint8_t * buf) {
 	uint8_t * read_buf = malloc(ATA_SECTOR_SIZE);
 	do {
 		ata_device_write_sector(dev, lba, buf);

modules/ataold.c

@@ -34,10 +34,6 @@ static spin_lock_t ata_lock = { 0 };
 
 static void ata_device_read_sector(struct ata_device * dev, uint32_t lba, uint8_t * buf);
 static void ata_device_write_sector_retry(struct ata_device * dev, uint32_t lba, uint8_t * buf);
-static uint32_t read_ata(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
-static uint32_t write_ata(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
-static void     open_ata(fs_node_t *node, unsigned int flags);
-static void     close_ata(fs_node_t *node);
 
 static uint64_t ata_max_offset(struct ata_device * dev) {
 	uint64_t sectors = dev->identity.sectors_48;
@@ -49,7 +45,7 @@ static uint64_t ata_max_offset(struct ata_device * dev) {
 	return sectors * ATA_SECTOR_SIZE;
 }
 
-static uint32_t read_ata(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t read_ata(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 
 	struct ata_device * dev = (struct ata_device *)node->device;
 
@@ -72,7 +68,7 @@ static uint32_t read_ata(fs_node_t *node, uint32_t offset, uint32_t size, uint8_
 		char * tmp = malloc(ATA_SECTOR_SIZE);
 		ata_device_read_sector(dev, start_block, (uint8_t *)tmp);
 
-		memcpy(buffer, (void *)((uintptr_t)tmp + (offset % ATA_SECTOR_SIZE)), prefix_size);
+		memcpy(buffer, (void *)((uintptr_t)tmp + ((uintptr_t)offset % ATA_SECTOR_SIZE)), prefix_size);
 
 		free(tmp);
 
@@ -101,7 +97,7 @@ static uint32_t read_ata(fs_node_t *node, uint32_t offset, uint32_t size, uint8_
 	return size;
 }
 
-static uint32_t write_ata(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t write_ata(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	struct ata_device * dev = (struct ata_device *)node->device;
 
 	unsigned int start_block = offset / ATA_SECTOR_SIZE;
@@ -126,7 +122,7 @@ static uint32_t write_ata(fs_node_t *node, uint32_t offset, uint32_t size, uint8
 
 		debug_print(NOTICE, "Writing first block");
 
-		memcpy((void *)((uintptr_t)tmp + (offset % ATA_SECTOR_SIZE)), buffer, prefix_size);
+		memcpy((void *)((uintptr_t)tmp + ((uintptr_t)offset % ATA_SECTOR_SIZE)), buffer, prefix_size);
 		ata_device_write_sector_retry(dev, start_block, (uint8_t *)tmp);
 
 		free(tmp);

modules/dospart.c

@@ -18,7 +18,7 @@ struct dos_partition_entry {
 	partition_t partition;
 };
 
-static uint32_t read_part(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t read_part(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	struct dos_partition_entry * device = (struct dos_partition_entry *)node->device;
 
 	if (offset > device->partition.sector_count * SECTORSIZE) {
@@ -34,7 +34,7 @@ static uint32_t read_part(fs_node_t *node, uint32_t offset, uint32_t size, uint8
 	return read_fs(device->device, offset + device->partition.lba_first_sector * SECTORSIZE, size, buffer);
 }
 
-static uint32_t write_part(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t write_part(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	struct dos_partition_entry * device = (struct dos_partition_entry *)node->device;
 
 	if (offset > device->partition.sector_count * SECTORSIZE) {

modules/ext2.c

@@ -1131,7 +1131,7 @@ static ext2_inodetable_t * read_inode(ext2_fs_t * this, uint32_t inode) {
 	return inodet;
 }
 
-static uint32_t read_ext2(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t read_ext2(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	ext2_fs_t * this = (ext2_fs_t *)node->device;
 	ext2_inodetable_t * inode = read_inode(this, node->inode);
 	uint32_t end;
@@ -1149,14 +1149,14 @@ static uint32_t read_ext2(fs_node_t *node, uint32_t offset, uint32_t size, uint8
 	uint8_t * buf = malloc(this->block_size);
 	if (start_block == end_block) {
 		inode_read_block(this, inode, start_block, buf);
-		memcpy(buffer, (uint8_t *)(((uint32_t)buf) + (offset % this->block_size)), size_to_read);
+		memcpy(buffer, (uint8_t *)(((uint32_t)buf) + ((uintptr_t)offset % this->block_size)), size_to_read);
 	} else {
 		uint32_t block_offset;
 		uint32_t blocks_read = 0;
 		for (block_offset = start_block; block_offset < end_block; block_offset++, blocks_read++) {
 			if (block_offset == start_block) {
 				inode_read_block(this, inode, block_offset, buf);
-				memcpy(buffer, (uint8_t *)(((uint32_t)buf) + (offset % this->block_size)), this->block_size - (offset % this->block_size));
+				memcpy(buffer, (uint8_t *)(((uint32_t)buf) + ((uintptr_t)offset % this->block_size)), this->block_size - (offset % this->block_size));
 			} else {
 				inode_read_block(this, inode, block_offset, buf);
 				memcpy(buffer + this->block_size * blocks_read - (offset % this->block_size), buf, this->block_size);
@@ -1172,7 +1172,7 @@ static uint32_t read_ext2(fs_node_t *node, uint32_t offset, uint32_t size, uint8
 	return size_to_read;
 }
 
-static uint32_t write_inode_buffer(ext2_fs_t * this, ext2_inodetable_t * inode, uint32_t inode_number, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t write_inode_buffer(ext2_fs_t * this, ext2_inodetable_t * inode, uint32_t inode_number, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	uint32_t end = offset + size;
 	if (end > inode->size) {
 		inode->size = end;
@@ -1186,7 +1186,7 @@ static uint32_t write_inode_buffer(ext2_fs_t * this, ext2_inodetable_t * inode,
 	uint8_t * buf = malloc(this->block_size);
 	if (start_block == end_block) {
 		inode_read_block(this, inode, start_block, buf);
-		memcpy((uint8_t *)(((uint32_t)buf) + (offset % this->block_size)), buffer, size_to_read);
+		memcpy((uint8_t *)(((uint32_t)buf) + ((uintptr_t)offset % this->block_size)), buffer, size_to_read);
 		inode_write_block(this, inode, inode_number, start_block, buf);
 	} else {
 		uint32_t block_offset;
@@ -1194,7 +1194,7 @@ static uint32_t write_inode_buffer(ext2_fs_t * this, ext2_inodetable_t * inode,
 		for (block_offset = start_block; block_offset < end_block; block_offset++, blocks_read++) {
 			if (block_offset == start_block) {
 				int b = inode_read_block(this, inode, block_offset, buf);
-				memcpy((uint8_t *)(((uint32_t)buf) + (offset % this->block_size)), buffer, this->block_size - (offset % this->block_size));
+				memcpy((uint8_t *)(((uint32_t)buf) + ((uintptr_t)offset % this->block_size)), buffer, this->block_size - (offset % this->block_size));
 				inode_write_block(this, inode, inode_number, block_offset, buf);
 				if (!b) {
 					refresh_inode(this, inode, inode_number);
@@ -1218,7 +1218,7 @@ static uint32_t write_inode_buffer(ext2_fs_t * this, ext2_inodetable_t * inode,
 	return size_to_read;
 }
 
-static uint32_t write_ext2(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t write_ext2(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	ext2_fs_t * this = (ext2_fs_t *)node->device;
 	ext2_inodetable_t * inode = read_inode(this, node->inode);
 

modules/iso9660.c

@@ -269,7 +269,7 @@ cleanup:
 	return dirent;
 }
 
-static uint32_t read_iso(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t * buffer) {
+static uint32_t read_iso(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t * buffer) {
 	iso_9660_fs_t * this = node->device;
 	char * tmp = malloc(this->block_size);
 	read_sector(this, node->inode, tmp);

modules/lfbvideo.c

@@ -221,7 +221,7 @@ static void lfb_video_panic(char ** msgs) {
 	}
 }
 
-static uint32_t framebuffer_func(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t * buffer) {
+static uint32_t framebuffer_func(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t * buffer) {
 	char * buf = malloc(4096);
 
 	if (lfb_driver_name) {

modules/net.c

@@ -34,7 +34,7 @@ static int tasklet_pid = 0;
 
 uint32_t get_primary_dns(void);
 
-static uint32_t netif_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t netif_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	char * buf = malloc(4096);
 
 	struct netif * netif = &_netif;
@@ -424,7 +424,7 @@ static int socket_wait(fs_node_t * node, void * process) {
 	return 0;
 }
 
-static uint32_t socket_read(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t * buffer) {
+static uint32_t socket_read(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t * buffer) {
 	/* Sleep until we have something to receive */
 #if 0
 	fgets((char *)buffer, size, node->device);
@@ -433,7 +433,7 @@ static uint32_t socket_read(fs_node_t * node, uint32_t offset, uint32_t size, ui
 	return net_recv(node->device, buffer, size);
 #endif
 }
-static uint32_t socket_write(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t * buffer) {
+static uint32_t socket_write(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t * buffer) {
 	/* Add the packet to the appropriate interface queue and send it off. */
 
 	net_send((struct socket *)node->device, buffer, size, 0);

modules/packetfs.c

@@ -98,7 +98,7 @@ static pex_client_t * create_client(pex_ex_t * p) {
 	return out;
 }
 
-static uint32_t read_server(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t * buffer) {
+static uint32_t read_server(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t * buffer) {
 	pex_ex_t * p = (pex_ex_t *)node->device;
 	debug_print(INFO, "[pex] server read(...)");
 
@@ -119,7 +119,7 @@ static uint32_t read_server(fs_node_t * node, uint32_t offset, uint32_t size, ui
 	return out;
 }
 
-static uint32_t write_server(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t * buffer) {
+static uint32_t write_server(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t * buffer) {
 	pex_ex_t * p = (pex_ex_t *)node->device;
 	debug_print(INFO, "[pex] server write(...)");
 
@@ -158,7 +158,7 @@ static int ioctl_server(fs_node_t * node, int request, void * argp) {
 	}
 }
 
-static uint32_t read_client(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t * buffer) {
+static uint32_t read_client(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t * buffer) {
 	pex_client_t * c = (pex_client_t *)node->inode;
 	if (c->parent != node->device) {
 		debug_print(WARNING, "[pex] Invalid device endpoint on client read?");
@@ -185,7 +185,7 @@ static uint32_t read_client(fs_node_t * node, uint32_t offset, uint32_t size, ui
 	return out;
 }
 
-static uint32_t write_client(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t * buffer) {
+static uint32_t write_client(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t * buffer) {
 	pex_client_t * c = (pex_client_t *)node->inode;
 	if (c->parent != node->device) {
 		debug_print(WARNING, "[pex] Invalid device endpoint on client write?");

modules/pcspkr.c

@@ -34,7 +34,7 @@ struct spkr {
 	int frequency;
 };
 
-static uint32_t write_spkr(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t write_spkr(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	if (!size % (sizeof(struct spkr))) {
 		return 0;
 	}

modules/portio.c

@@ -11,7 +11,7 @@
 #include <kernel/fs.h>
 #include <kernel/module.h>
 
-static uint32_t read_port(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t read_port(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	switch (size) {
 		case 1:
 			buffer[0] = inportb(offset);
@@ -32,7 +32,7 @@ static uint32_t read_port(fs_node_t *node, uint32_t offset, uint32_t size, uint8
 	return size;
 }
 
-static uint32_t write_port(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t write_port(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	switch (size) {
 		case 1:
 			outportb(offset, buffer[0]);

modules/procfs.c

@@ -38,7 +38,7 @@ static fs_node_t * procfs_generic_create(char * name, read_type_t read_func) {
 	return fnode;
 }
 
-static uint32_t proc_cmdline_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t proc_cmdline_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	char buf[1024];
 	process_t * proc = process_from_pid(node->inode);
 
@@ -128,7 +128,7 @@ static size_t calculate_shm_resident(page_directory_t * src) {
 	return pages;
 }
 
-static uint32_t proc_status_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t proc_status_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	char buf[2048];
 	process_t * proc = process_from_pid(node->inode);
 	process_t * parent = process_get_parent(proc);
@@ -281,7 +281,7 @@ static fs_node_t * procfs_procdir_create(process_t * process) {
 
 #define cpuid(in,a,b,c,d) do { asm volatile ("cpuid" : "=a"(a),"=b"(b),"=c"(c),"=d"(d) : "a"(in)); } while(0)
 
-static uint32_t cpuinfo_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t cpuinfo_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	char buf[1024];
 
 	unsigned long a, b, unused;;
@@ -319,7 +319,7 @@ static uint32_t cpuinfo_func(fs_node_t *node, uint32_t offset, uint32_t size, ui
 extern uintptr_t heap_end;
 extern uintptr_t kernel_heap_alloc_point;
 
-static uint32_t meminfo_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t meminfo_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	char buf[1024];
 	unsigned int total = memory_total();
 	unsigned int free  = total - memory_use();
@@ -341,7 +341,7 @@ static uint32_t meminfo_func(fs_node_t *node, uint32_t offset, uint32_t size, ui
 	return size;
 }
 
-static uint32_t pat_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t pat_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	char buf[1024];
 
 	uint64_t pat_values;
@@ -395,7 +395,7 @@ static uint32_t pat_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_
 }
 
 
-static uint32_t uptime_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t uptime_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	char buf[1024];
 	sprintf(buf, "%d.%3d\n", timer_ticks, timer_subticks);
 
@@ -407,7 +407,7 @@ static uint32_t uptime_func(fs_node_t *node, uint32_t offset, uint32_t size, uin
 	return size;
 }
 
-static uint32_t cmdline_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t cmdline_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	char buf[1024];
 	extern char * cmdline;
 	sprintf(buf, "%s\n", cmdline ? cmdline : "");
@@ -420,7 +420,7 @@ static uint32_t cmdline_func(fs_node_t *node, uint32_t offset, uint32_t size, ui
 	return size;
 }
 
-static uint32_t version_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t version_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	char buf[1024];
 	char version_number[512];
 	sprintf(version_number, __kernel_version_format,
@@ -444,7 +444,7 @@ static uint32_t version_func(fs_node_t *node, uint32_t offset, uint32_t size, ui
 	return size;
 }
 
-static uint32_t compiler_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t compiler_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	char buf[1024];
 	sprintf(buf, "%s\n", __kernel_compiler_version);
 
@@ -485,7 +485,7 @@ static void mount_recurse(char * buf, tree_node_t * node, size_t height) {
 	}
 }
 
-static uint32_t mounts_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t mounts_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	char * buf = malloc(4096);
 
 	buf[0] = '\0';
@@ -504,7 +504,7 @@ static uint32_t mounts_func(fs_node_t *node, uint32_t offset, uint32_t size, uin
 	return size;
 }
 
-static uint32_t modules_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t modules_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	list_t * hash_keys = hashmap_keys(modules_get_list());
 	char * buf = malloc(hash_keys->length * 512);
 	unsigned int soffset = 0;
@@ -548,7 +548,7 @@ static uint32_t modules_func(fs_node_t *node, uint32_t offset, uint32_t size, ui
 
 extern hashmap_t * fs_types; /* from kernel/fs/vfs.c */
 
-static uint32_t filesystems_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t filesystems_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	list_t * hash_keys = hashmap_keys(fs_types);
 	char * buf = malloc(hash_keys->length * 512);
 	unsigned int soffset = 0;
@@ -570,7 +570,7 @@ static uint32_t filesystems_func(fs_node_t *node, uint32_t offset, uint32_t size
 	return size;
 }
 
-static uint32_t loader_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t loader_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	char * buf = malloc(512);
 
 	if (mboot_ptr->flags & MULTIBOOT_FLAG_LOADER) {
@@ -594,7 +594,7 @@ static uint32_t loader_func(fs_node_t *node, uint32_t offset, uint32_t size, uin
 
 extern char * get_irq_handler(int irq, int chain);
 
-static uint32_t irq_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t irq_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	char * buf = malloc(4096);
 	unsigned int soffset = 0;
 
@@ -660,7 +660,7 @@ static void scan_count(uint32_t device, uint16_t vendorid, uint16_t deviceid, vo
 	(*count)++;
 }
 
-static uint32_t pci_func(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t pci_func(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	size_t count = 0;
 	pci_scan(&scan_count, -1, &count);
 

modules/random.c

@@ -12,22 +12,16 @@
 #include <kernel/fs.h>
 #include <kernel/module.h>
 
-static uint32_t read_random(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
-static uint32_t write_random(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
-static void open_random(fs_node_t *node, unsigned int flags);
-static void close_random(fs_node_t *node);
-
-static uint32_t read_random(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t read_random(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	uint32_t s = 0;
 	while (s < size) {
 		buffer[s] = krand() % 0xFF;
-		offset++;
 		s++;
 	}
 	return size;
 }
 
-static uint32_t write_random(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t write_random(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	return size;
 }
 

modules/snd.c

@@ -24,7 +24,7 @@
 
 #define SND_BUF_SIZE 0x4000
 
-static uint32_t snd_dsp_write(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t *buffer);
+static uint32_t snd_dsp_write(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t *buffer);
 static int snd_dsp_ioctl(fs_node_t * node, int request, void * argp);
 static void snd_dsp_open(fs_node_t * node, unsigned int flags);
 static void snd_dsp_close(fs_node_t * node);
@@ -102,7 +102,7 @@ snd_unregister_cleanup:
 	return rv;
 }
 
-static uint32_t snd_dsp_write(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t snd_dsp_write(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	if (!_devices.length) return -1; /* No sink available. */
 
 	struct dsp_node * dsp = node->device;

modules/tmpfs.c

@@ -176,7 +176,7 @@ static char * tmpfs_file_getset_block(struct tmpfs_file * t, size_t blockid, int
 }
 
 
-static uint32_t read_tmpfs(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t read_tmpfs(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	struct tmpfs_file * t = (struct tmpfs_file *)(node->device);
 
 	t->atime = now();
@@ -195,7 +195,7 @@ static uint32_t read_tmpfs(fs_node_t *node, uint32_t offset, uint32_t size, uint
 	if (start_block == end_block && offset == end) return 0;
 	if (start_block == end_block) {
 		void *buf = tmpfs_file_getset_block(t, start_block, 0);
-		memcpy(buffer, (uint8_t *)(((uint32_t)buf) + (offset % BLOCKSIZE)), size_to_read);
+		memcpy(buffer, (uint8_t *)(((uint32_t)buf) + ((uintptr_t)offset % BLOCKSIZE)), size_to_read);
 		spin_unlock(tmpfs_page_lock);
 		return size_to_read;
 	} else {
@@ -204,7 +204,7 @@ static uint32_t read_tmpfs(fs_node_t *node, uint32_t offset, uint32_t size, uint
 		for (block_offset = start_block; block_offset < end_block; block_offset++, blocks_read++) {
 			if (block_offset == start_block) {
 				void *buf = tmpfs_file_getset_block(t, block_offset, 0);
-				memcpy(buffer, (uint8_t *)(((uint32_t)buf) + (offset % BLOCKSIZE)), BLOCKSIZE - (offset % BLOCKSIZE));
+				memcpy(buffer, (uint8_t *)(((uint32_t)buf) + ((uintptr_t)offset % BLOCKSIZE)), BLOCKSIZE - (offset % BLOCKSIZE));
 				spin_unlock(tmpfs_page_lock);
 			} else {
 				void *buf = tmpfs_file_getset_block(t, block_offset, 0);
@@ -221,7 +221,7 @@ static uint32_t read_tmpfs(fs_node_t *node, uint32_t offset, uint32_t size, uint
 	return size_to_read;
 }
 
-static uint32_t write_tmpfs(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t write_tmpfs(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	struct tmpfs_file * t = (struct tmpfs_file *)(node->device);
 
 	t->atime = now();
@@ -238,7 +238,7 @@ static uint32_t write_tmpfs(fs_node_t *node, uint32_t offset, uint32_t size, uin
 	uint32_t size_to_read = end - offset;
 	if (start_block == end_block) {
 		void *buf = tmpfs_file_getset_block(t, start_block, 1);
-		memcpy((uint8_t *)(((uint32_t)buf) + (offset % BLOCKSIZE)), buffer, size_to_read);
+		memcpy((uint8_t *)(((uint32_t)buf) + ((uintptr_t)offset % BLOCKSIZE)), buffer, size_to_read);
 		spin_unlock(tmpfs_page_lock);
 		return size_to_read;
 	} else {
@@ -247,7 +247,7 @@ static uint32_t write_tmpfs(fs_node_t *node, uint32_t offset, uint32_t size, uin
 		for (block_offset = start_block; block_offset < end_block; block_offset++, blocks_read++) {
 			if (block_offset == start_block) {
 				void *buf = tmpfs_file_getset_block(t, block_offset, 1);
-				memcpy((uint8_t *)(((uint32_t)buf) + (offset % BLOCKSIZE)), buffer, BLOCKSIZE - (offset % BLOCKSIZE));
+				memcpy((uint8_t *)(((uint32_t)buf) + ((uintptr_t)offset % BLOCKSIZE)), buffer, BLOCKSIZE - (offset % BLOCKSIZE));
 				spin_unlock(tmpfs_page_lock);
 			} else {
 				void *buf = tmpfs_file_getset_block(t, block_offset, 1);

modules/vbox.c

@@ -107,7 +107,7 @@ struct vbox_pointershape {
 
 
 #define EARLY_LOG_DEVICE 0x504
-static uint32_t _vbox_write(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t _vbox_write(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	for (unsigned int i = 0; i < size; ++i) {
 		outportb(EARLY_LOG_DEVICE, buffer[i]);
 	}
@@ -219,7 +219,7 @@ static int ioctl_mouse(fs_node_t * node, int request, void * argp) {
 	return -1;
 }
 
-uint32_t write_pointer(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+uint32_t write_pointer(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 
 	if (!mouse_state) {
 		return -1;
@@ -231,7 +231,7 @@ uint32_t write_pointer(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t
 	return size;
 }
 
-uint32_t write_rectpipe(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+uint32_t write_rectpipe(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	(void)node;
 	(void)offset;
 

modules/vgalog.c

@@ -63,7 +63,7 @@ static void term_write(char c) {
 	write_string(foo);
 }
 
-static uint32_t vga_write(fs_node_t * node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t vga_write(fs_node_t * node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	/* XXX do some terminal processing like we did in the old days */
 	size_t i = 0;
 	while (*buffer && i < size) {

modules/zero.c

@@ -11,20 +11,11 @@
 #include <kernel/fs.h>
 #include <kernel/module.h>
 
-static uint32_t read_null(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
-static uint32_t write_null(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
-static void open_null(fs_node_t *node, unsigned int flags);
-static void close_null(fs_node_t *node);
-static uint32_t read_zero(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
-static uint32_t write_zero(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer);
-static void open_zero(fs_node_t *node, unsigned int flags);
-static void close_zero(fs_node_t *node);
-
-static uint32_t read_null(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t read_null(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	return 0;
 }
 
-static uint32_t write_null(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t write_null(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	return 0;
 }
 
@@ -36,12 +27,12 @@ static void close_null(fs_node_t * node) {
 	return;
 }
 
-static uint32_t read_zero(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t read_zero(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	memset(buffer, 0x00, size);
 	return 1;
 }
 
-static uint32_t write_zero(fs_node_t *node, uint32_t offset, uint32_t size, uint8_t *buffer) {
+static uint32_t write_zero(fs_node_t *node, uint64_t offset, uint32_t size, uint8_t *buffer) {
 	return 0;
 }