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/*
* sysfs.h
*/
#ifndef SYSFS_H_INCLUDED
#define SYSFS_H_INCLUDED
#include <stdbool.h>
#include "strbuf.h"
int devt2devname (char *, int, const char *);
ssize_t sysfs_attr_set_value(struct udev_device *dev, const char *attr_name,
const char * value, size_t value_len);
ssize_t sysfs_attr_get_value(struct udev_device *dev, const char *attr_name,
char * value, size_t value_len);
ssize_t sysfs_bin_attr_get_value(struct udev_device *dev, const char *attr_name,
unsigned char * value, size_t value_len);
#define sysfs_attr_value_ok(rc, value_len) \
({ \
ssize_t __r = rc; \
__r >= 0 && (size_t)__r < (size_t)value_len; \
})
#define sysfs_attr_get_value_ok(dev, attr, val, len) \
({ \
size_t __l = (len); \
ssize_t __rc = sysfs_attr_get_value(dev, attr, val, __l); \
sysfs_attr_value_ok(__rc, __l); \
})
#define log_sysfs_attr_set_value(prio, rc, fmt, __args...) \
do { \
STRBUF_ON_STACK(__buf); \
if (print_strbuf(&__buf, fmt, ##__args) >= 0 && \
print_strbuf(&__buf, ": %s", rc < 0 ? strerror(-rc) : \
"write underflow") >= 0) \
condlog(prio, "%s", get_strbuf_str(&__buf)); \
} while(0)
int sysfs_get_size (struct path *pp, unsigned long long * size);
int sysfs_check_holders(char * check_devt, char * new_devt);
bool sysfs_is_multipathed(struct path *pp, bool set_wwid);
struct multipath;
struct udev_device *get_udev_for_mpp(const struct multipath *mpp);
#endif
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