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path: root/arch/um/drivers/ubd_kern.c
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Diffstat (limited to 'arch/um/drivers/ubd_kern.c')
-rw-r--r--arch/um/drivers/ubd_kern.c124
1 files changed, 62 insertions, 62 deletions
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 2a00203e101..614fe25a31b 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -89,7 +89,7 @@ static inline int ubd_test_bit(__u64 bit, unsigned char *data)
bits = sizeof(data[0]) * 8;
n = bit / bits;
off = bit % bits;
- return((data[n] & (1 << off)) != 0);
+ return (data[n] & (1 << off)) != 0;
}
static inline void ubd_set_bit(__u64 bit, unsigned char *data)
@@ -146,7 +146,7 @@ struct cow {
unsigned long *bitmap;
unsigned long bitmap_len;
int bitmap_offset;
- int data_offset;
+ int data_offset;
};
#define MAX_SG 64
@@ -174,10 +174,10 @@ struct ubd {
#define DEFAULT_COW { \
.file = NULL, \
- .fd = -1, \
- .bitmap = NULL, \
+ .fd = -1, \
+ .bitmap = NULL, \
.bitmap_offset = 0, \
- .data_offset = 0, \
+ .data_offset = 0, \
}
#define DEFAULT_UBD { \
@@ -187,9 +187,9 @@ struct ubd {
.size = -1, \
.boot_openflags = OPEN_FLAGS, \
.openflags = OPEN_FLAGS, \
- .no_cow = 0, \
+ .no_cow = 0, \
.shared = 0, \
- .cow = DEFAULT_COW, \
+ .cow = DEFAULT_COW, \
.lock = SPIN_LOCK_UNLOCKED, \
.request = NULL, \
.start_sg = 0, \
@@ -249,7 +249,7 @@ static void make_ide_entries(char *dev_name)
static int fake_ide_setup(char *str)
{
fake_ide = 1;
- return(1);
+ return 1;
}
__setup("fake_ide", fake_ide_setup);
@@ -267,7 +267,7 @@ static int parse_unit(char **ptr)
if(isdigit(*str)) {
n = simple_strtoul(str, &end, 0);
if(end == str)
- return(-1);
+ return -1;
*ptr = end;
}
else if (('a' <= *str) && (*str <= 'z')) {
@@ -275,7 +275,7 @@ static int parse_unit(char **ptr)
str++;
*ptr = str;
}
- return(n);
+ return n;
}
/* If *index_out == -1 at exit, the passed option was a general one;
@@ -442,7 +442,7 @@ static int udb_setup(char *str)
{
printk("udb%s specified on command line is almost certainly a ubd -> "
"udb TYPO\n", str);
- return(1);
+ return 1;
}
__setup("udb", udb_setup);
@@ -541,7 +541,7 @@ static void ubd_handler(void)
static irqreturn_t ubd_intr(int irq, void *dev)
{
ubd_handler();
- return(IRQ_HANDLED);
+ return IRQ_HANDLED;
}
/* Only changed by ubd_init, which is an initcall. */
@@ -560,7 +560,7 @@ static inline int ubd_file_size(struct ubd *ubd_dev, __u64 *size_out)
char *file;
file = ubd_dev->cow.file ? ubd_dev->cow.file : ubd_dev->file;
- return(os_file_size(file, size_out));
+ return os_file_size(file, size_out);
}
static void ubd_close_dev(struct ubd *ubd_dev)
@@ -632,10 +632,10 @@ static int ubd_open_dev(struct ubd *ubd_dev)
if(err < 0) goto error;
ubd_dev->cow.fd = err;
}
- return(0);
+ return 0;
error:
os_close_file(ubd_dev->fd);
- return(err);
+ return err;
}
static void ubd_device_release(struct device *dev)
@@ -653,7 +653,7 @@ static int ubd_disk_register(int major, u64 size, int unit,
disk = alloc_disk(1 << UBD_SHIFT);
if(disk == NULL)
- return(-ENOMEM);
+ return -ENOMEM;
disk->major = major;
disk->first_minor = unit << UBD_SHIFT;
@@ -758,14 +758,14 @@ static int ubd_config(char *str, char **error_out)
goto err_free;
}
- mutex_lock(&ubd_lock);
+ mutex_lock(&ubd_lock);
ret = ubd_add(n, error_out);
if (ret)
ubd_devs[n].file = NULL;
- mutex_unlock(&ubd_lock);
+ mutex_unlock(&ubd_lock);
out:
- return ret;
+ return ret;
err_free:
kfree(str);
@@ -780,7 +780,7 @@ static int ubd_get_config(char *name, char *str, int size, char **error_out)
n = parse_unit(&name);
if((n >= MAX_DEV) || (n < 0)){
*error_out = "ubd_get_config : device number out of range";
- return(-1);
+ return -1;
}
ubd_dev = &ubd_devs[n];
@@ -801,17 +801,17 @@ static int ubd_get_config(char *name, char *str, int size, char **error_out)
out:
mutex_unlock(&ubd_lock);
- return(len);
+ return len;
}
static int ubd_id(char **str, int *start_out, int *end_out)
{
- int n;
+ int n;
n = parse_unit(str);
- *start_out = 0;
- *end_out = MAX_DEV - 1;
- return n;
+ *start_out = 0;
+ *end_out = MAX_DEV - 1;
+ return n;
}
static int ubd_remove(int n, char **error_out)
@@ -832,7 +832,7 @@ static int ubd_remove(int n, char **error_out)
if(ubd_dev->count > 0)
goto out;
- ubd_gendisk[n] = NULL;
+ ubd_gendisk[n] = NULL;
if(disk != NULL){
del_gendisk(disk);
put_disk(disk);
@@ -858,7 +858,7 @@ static struct mc_device ubd_mc = {
.list = LIST_HEAD_INIT(ubd_mc.list),
.name = "ubd",
.config = ubd_config,
- .get_config = ubd_get_config,
+ .get_config = ubd_get_config,
.id = ubd_id,
.remove = ubd_remove,
};
@@ -880,7 +880,7 @@ static int __init ubd0_init(void)
ubd_dev->file = "root_fs";
mutex_unlock(&ubd_lock);
- return(0);
+ return 0;
}
__initcall(ubd0_init);
@@ -908,14 +908,14 @@ static int __init ubd_init(void)
return -1;
}
platform_driver_register(&ubd_driver);
- mutex_lock(&ubd_lock);
+ mutex_lock(&ubd_lock);
for (i = 0; i < MAX_DEV; i++){
err = ubd_add(i, &error);
if(err)
printk(KERN_ERR "Failed to initialize ubd device %d :"
"%s\n", i, error);
}
- mutex_unlock(&ubd_lock);
+ mutex_unlock(&ubd_lock);
return 0;
}
@@ -939,7 +939,7 @@ static int __init ubd_driver_init(void){
"ubd : Failed to start I/O thread (errno = %d) - "
"falling back to synchronous I/O\n", -io_pid);
io_pid = -1;
- return(0);
+ return 0;
}
err = um_request_irq(UBD_IRQ, thread_fd, IRQ_READ, ubd_intr,
IRQF_DISABLED, "ubd", ubd_devs);
@@ -974,7 +974,7 @@ static int ubd_open(struct inode *inode, struct file *filp)
err = -EROFS;
}*/
out:
- return(err);
+ return err;
}
static int ubd_release(struct inode * inode, struct file * file)
@@ -984,7 +984,7 @@ static int ubd_release(struct inode * inode, struct file * file)
if(--ubd_dev->count == 0)
ubd_close_dev(ubd_dev);
- return(0);
+ return 0;
}
static void cowify_bitmap(__u64 io_offset, int length, unsigned long *cow_mask,
@@ -1040,7 +1040,7 @@ static void cowify_req(struct io_thread_req *req, unsigned long *bitmap,
if(ubd_test_bit(sector + i, (unsigned char *) bitmap))
ubd_set_bit(i, (unsigned char *)
&req->sector_mask);
- }
+ }
}
else cowify_bitmap(req->offset, req->length, &req->sector_mask,
&req->cow_offset, bitmap, bitmap_offset,
@@ -1157,21 +1157,21 @@ static int ubd_ioctl(struct inode * inode, struct file * file,
ubd_id.cyls = ubd_dev->size / (128 * 32 * 512);
if(copy_to_user((char __user *) arg, (char *) &ubd_id,
sizeof(ubd_id)))
- return(-EFAULT);
- return(0);
+ return -EFAULT;
+ return 0;
case CDROMVOLREAD:
if(copy_from_user(&volume, (char __user *) arg, sizeof(volume)))
- return(-EFAULT);
+ return -EFAULT;
volume.channel0 = 255;
volume.channel1 = 255;
volume.channel2 = 255;
volume.channel3 = 255;
if(copy_to_user((char __user *) arg, &volume, sizeof(volume)))
- return(-EFAULT);
- return(0);
+ return -EFAULT;
+ return 0;
}
- return(-EINVAL);
+ return -EINVAL;
}
static int path_requires_switch(char *from_cmdline, char *from_cow, char *cow)
@@ -1213,29 +1213,29 @@ static int backing_file_mismatch(char *file, __u64 size, time_t mtime)
if(err < 0){
printk("Failed to get modification time of backing file "
"\"%s\", err = %d\n", file, -err);
- return(err);
+ return err;
}
err = os_file_size(file, &actual);
if(err < 0){
printk("Failed to get size of backing file \"%s\", "
"err = %d\n", file, -err);
- return(err);
+ return err;
}
- if(actual != size){
+ if(actual != size){
/*__u64 can be a long on AMD64 and with %lu GCC complains; so
* the typecast.*/
printk("Size mismatch (%llu vs %llu) of COW header vs backing "
"file\n", (unsigned long long) size, actual);
- return(-EINVAL);
+ return -EINVAL;
}
if(modtime != mtime){
printk("mtime mismatch (%ld vs %ld) of COW header vs backing "
"file\n", mtime, modtime);
- return(-EINVAL);
+ return -EINVAL;
}
- return(0);
+ return 0;
}
int read_cow_bitmap(int fd, void *buf, int offset, int len)
@@ -1244,13 +1244,13 @@ int read_cow_bitmap(int fd, void *buf, int offset, int len)
err = os_seek_file(fd, offset);
if(err < 0)
- return(err);
+ return err;
- err = os_read_file_k(fd, buf, len);
+ err = os_read_file(fd, buf, len);
if(err < 0)
- return(err);
+ return err;
- return(0);
+ return 0;
}
int open_ubd_file(char *file, struct openflags *openflags, int shared,
@@ -1268,14 +1268,14 @@ int open_ubd_file(char *file, struct openflags *openflags, int shared,
if (fd < 0) {
if ((fd == -ENOENT) && (create_cow_out != NULL))
*create_cow_out = 1;
- if (!openflags->w ||
- ((fd != -EROFS) && (fd != -EACCES)))
+ if (!openflags->w ||
+ ((fd != -EROFS) && (fd != -EACCES)))
return fd;
openflags->w = 0;
fd = os_open_file(file, *openflags, mode);
if (fd < 0)
return fd;
- }
+ }
if(shared)
printk("Not locking \"%s\" on the host\n", file);
@@ -1289,7 +1289,7 @@ int open_ubd_file(char *file, struct openflags *openflags, int shared,
/* Successful return case! */
if(backing_file_out == NULL)
- return(fd);
+ return fd;
err = read_cow_header(file_reader, &fd, &version, &backing_file, &mtime,
&size, &sectorsize, &align, bitmap_offset_out);
@@ -1299,7 +1299,7 @@ int open_ubd_file(char *file, struct openflags *openflags, int shared,
goto out_close;
}
if(err)
- return(fd);
+ return fd;
asked_switch = path_requires_switch(*backing_file_out, backing_file, file);
@@ -1322,7 +1322,7 @@ int open_ubd_file(char *file, struct openflags *openflags, int shared,
cow_sizes(version, size, sectorsize, align, *bitmap_offset_out,
bitmap_len_out, data_offset_out);
- return fd;
+ return fd;
out_close:
os_close_file(fd);
return err;
@@ -1347,10 +1347,10 @@ int create_cow_file(char *cow_file, char *backing_file, struct openflags flags,
bitmap_offset_out, bitmap_len_out,
data_offset_out);
if(!err)
- return(fd);
+ return fd;
os_close_file(fd);
out:
- return(err);
+ return err;
}
static int update_bitmap(struct io_thread_req *req)
@@ -1358,12 +1358,12 @@ static int update_bitmap(struct io_thread_req *req)
int n;
if(req->cow_offset == -1)
- return(0);
+ return 0;
n = os_seek_file(req->fds[1], req->cow_offset);
if(n < 0){
printk("do_io - bitmap lseek failed : err = %d\n", -n);
- return(1);
+ return 1;
}
n = os_write_file_k(req->fds[1], &req->bitmap_words,
@@ -1371,10 +1371,10 @@ static int update_bitmap(struct io_thread_req *req)
if(n != sizeof(req->bitmap_words)){
printk("do_io - bitmap update failed, err = %d fd = %d\n", -n,
req->fds[1]);
- return(1);
+ return 1;
}
- return(0);
+ return 0;
}
void do_io(struct io_thread_req *req)
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 02:29:50 +0000