127 lines
3.9 KiB
C
127 lines
3.9 KiB
C
/*
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* No copyright is claimed. This code is in the public domain; do with
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* it what you wish.
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*
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* Copyright (C) 2011 Karel Zak <kzak@redhat.com>
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*/
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#ifndef UTIL_LINUX_SYSFS_H
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#define UTIL_LINUX_SYSFS_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <string.h>
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#include <inttypes.h>
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#include <dirent.h>
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#include "path.h"
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/**
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* sysfs_devname_sys_to_dev:
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* @name: devname to be converted in place
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*
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* Linux kernel linux/drivers/base/core.c: device_get_devnode()
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* defines a replacement of '!' in the /sys device name by '/' in the
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* /dev device name. This helper replaces all occurrences of '!' in
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* @name by '/' to convert from /sys to /dev.
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*/
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static inline void sysfs_devname_sys_to_dev(char *name)
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{
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char *c;
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if (name)
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while ((c = strchr(name, '!')))
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c[0] = '/';
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}
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/**
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* sysfs_devname_dev_to_sys:
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* @name: devname to be converted in place
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*
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* See sysfs_devname_sys_to_dev().
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*/
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static inline void sysfs_devname_dev_to_sys(char *name)
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{
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char *c;
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if (name)
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while ((c = strchr(name, '/')))
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c[0] = '!';
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}
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struct sysfs_blkdev {
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dev_t devno;
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struct path_cxt *parent;
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unsigned int scsi_host,
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scsi_channel,
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scsi_target,
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scsi_lun;
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unsigned int has_hctl : 1,
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hctl_error : 1 ;
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};
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void ul_sysfs_init_debug(void);
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struct path_cxt *ul_new_sysfs_path(dev_t devno, struct path_cxt *parent, const char *prefix);
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int sysfs_blkdev_init_path(struct path_cxt *pc, dev_t devno, struct path_cxt *parent);
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int sysfs_blkdev_set_parent(struct path_cxt *pc, struct path_cxt *parent);
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struct path_cxt *sysfs_blkdev_get_parent(struct path_cxt *pc);
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char *sysfs_blkdev_get_name(struct path_cxt *pc, char *buf, size_t bufsiz);
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int sysfs_blkdev_is_partition_dirent(DIR *dir, struct dirent *d, const char *parent_name);
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int sysfs_blkdev_count_partitions(struct path_cxt *pc, const char *devname);
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dev_t sysfs_blkdev_partno_to_devno(struct path_cxt *pc, int partno);
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char *sysfs_blkdev_get_slave(struct path_cxt *pc);
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char *sysfs_blkdev_get_path(struct path_cxt *pc, char *buf, size_t bufsiz);
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dev_t sysfs_blkdev_get_devno(struct path_cxt *pc);
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char *sysfs_blkdev_get_devchain(struct path_cxt *pc, char *buf, size_t bufsz);
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int sysfs_blkdev_next_subsystem(struct path_cxt *pc __attribute__((unused)), char *devchain, char **subsys);
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int sysfs_blkdev_is_hotpluggable(struct path_cxt *pc);
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int sysfs_blkdev_is_removable(struct path_cxt *pc);
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int sysfs_blkdev_get_wholedisk( struct path_cxt *pc,
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char *diskname,
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size_t len,
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dev_t *diskdevno);
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int sysfs_devno_to_wholedisk(dev_t dev, char *diskname,
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size_t len, dev_t *diskdevno);
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int sysfs_devno_is_dm_private(dev_t devno, char **uuid);
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int sysfs_devno_is_wholedisk(dev_t devno);
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dev_t sysfs_devname_to_devno(const char *name);
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dev_t __sysfs_devname_to_devno(const char *prefix, const char *name, const char *parent);
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int sysfs_devname_is_hidden(const char *prefix, const char *name);
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char *sysfs_devno_to_devpath(dev_t devno, char *buf, size_t bufsiz);
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char *sysfs_devno_to_devname(dev_t devno, char *buf, size_t bufsiz);
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int sysfs_devno_count_partitions(dev_t devno);
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int sysfs_blkdev_scsi_get_hctl(struct path_cxt *pc, int *h, int *c, int *t, int *l);
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char *sysfs_blkdev_scsi_host_strdup_attribute(struct path_cxt *pc,
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const char *type, const char *attr);
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int sysfs_blkdev_scsi_host_is(struct path_cxt *pc, const char *type);
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int sysfs_blkdev_scsi_has_attribute(struct path_cxt *pc, const char *attr);
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int sysfs_blkdev_scsi_path_contains(struct path_cxt *pc, const char *pattern);
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char *sysfs_chrdev_devno_to_devname(dev_t devno, char *buf, size_t bufsiz);
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enum sysfs_byteorder {
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SYSFS_BYTEORDER_LITTLE,
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SYSFS_BYTEORDER_BIG,
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};
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extern enum sysfs_byteorder sysfs_get_byteorder(struct path_cxt *pc);
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extern int sysfs_get_address_bits(struct path_cxt *pc);
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#endif /* UTIL_LINUX_SYSFS_H */
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