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Add device_is_locked function.

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This commit is contained in:
Ondrej Kozina
2019-02-27 17:48:51 +01:00
committed by Milan Broz
parent 1192fd27c6
commit a4d236eebe
2 changed files with 6 additions and 0 deletions
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1
lib/internal.h
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@@ -129,6 +129,7 @@ int device_read_lock(struct crypt_device *cd, struct device *device);
int device_write_lock(struct crypt_device *cd, struct device *device); int device_write_lock(struct crypt_device *cd, struct device *device);
void device_read_unlock(struct crypt_device *cd, struct device *device); void device_read_unlock(struct crypt_device *cd, struct device *device);
void device_write_unlock(struct crypt_device *cd, struct device *device); void device_write_unlock(struct crypt_device *cd, struct device *device);
bool device_is_locked(struct device *device);
enum devcheck { DEV_OK = 0, DEV_EXCL = 1 }; enum devcheck { DEV_OK = 0, DEV_EXCL = 1 };
int device_check_access(struct crypt_device *cd, int device_check_access(struct crypt_device *cd,

5
lib/utils_device.c
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@@ -890,3 +890,8 @@ void device_write_unlock(struct crypt_device *cd, struct device *device)
device->lh = NULL; device->lh = NULL;
} }
bool device_is_locked(struct device *device)
{
return device ? device_locked(device->lh) : 0;
}