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Add a dev_get_sectsize call.

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This commit is contained in:
Patrick Caulfield 2001-12-11 10:18:49 +00:00
parent b74c8033a2
commit 52864eda2e
2 changed files with 26 additions and 3 deletions
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28
lib/device/dev-io.c
View File

@ -13,8 +13,7 @@
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <linux/fs.h> // UGH!!! for BLKSSZGET
int dev_get_size(struct device *dev, uint64_t *size)
{
@ -40,6 +39,29 @@ int dev_get_size(struct device *dev, uint64_t *size)
return 1;
}
int dev_get_sectsize(struct device *dev, uint32_t *size)
{
int fd;
int s;
const char *name = dev_name(dev);
log_very_verbose("Getting size of %s", name);
if ((fd = open(name, O_RDONLY)) < 0) {
log_sys_error("open", name);
return 0;
}
if (ioctl(fd, BLKSSZGET, &s) < 0) {
log_sys_error("ioctl BLKSSZGET", name);
close(fd);
return 0;
}
close(fd);
*size = (uint32_t) s;
return 1;
}
int dev_open(struct device *dev, int flags)
{
const char *name = dev_name(dev);
@ -167,7 +189,7 @@ int dev_zero(struct device *dev, uint64_t offset, int64_t len)
int fd = dev->fd;
if (fd < 0) {
log_error("Attempt to zero part of an unopened device %s",
log_error("Attempt to zero part of an unopened device %s",
name);
return 0;
}

1
lib/device/device.h
View File

@ -26,6 +26,7 @@ struct device {
* All io should use these routines.
*/
int dev_get_size(struct device *dev, uint64_t *size);
int dev_get_sectsize(struct device *dev, uint32_t *size);
int dev_open(struct device *dev, int flags);
int dev_close(struct device *dev);