misc-utils/lsblk.h

   1 /*
   2  * Copyright (C) 2010-2018 Red Hat, Inc. All rights reserved.
   3  * Written by Milan Broz <mbroz@redhat.com>
   4  *            Karel Zak <kzak@redhat.com>
   5  */
   6 #ifndef UTIL_LINUX_LSBLK_H
   7 #define UTIL_LINUX_LSBLK_H
   8
   9 #include <stdint.h>
  10 #include <inttypes.h>
  11 #include <sys/statvfs.h>
  12
  13 #include <libsmartcols.h>
  14
  15 #include "c.h"
  16 #include "debug.h"
  17
  18 #define LSBLK_DEBUG_INIT        (1 << 1)
  19 #define LSBLK_DEBUG_FILTER      (1 << 2)
  20 #define LSBLK_DEBUG_DEV         (1 << 3)
  21 #define LSBLK_DEBUG_CXT         (1 << 4)
  22 #define LSBLK_DEBUG_ALL         0xFFFF
  23
  24 UL_DEBUG_DECLARE_MASK(lsblk);
  25 #define DBG(m, x)       __UL_DBG(lsblk, LSBLK_DEBUG_, m, x)
  26 #define ON_DBG(m, x)    __UL_DBG_CALL(lsblk, LSBLK_DEBUG_, m, x)
  27
  28 #define UL_DEBUG_CURRENT_MASK   UL_DEBUG_MASK(lsblk)
  29 #include "debugobj.h"
  30
  31 struct lsblk {
  32         struct libscols_table *table;   /* output table */
  33         struct libscols_column *sort_col;/* sort output by this column */
  34         int sort_id;
  35
  36         const char *sysroot;
  37         int flags;                      /* LSBLK_* */
  38
  39         unsigned int all_devices:1;     /* print all devices, including empty */
  40         unsigned int bytes:1;           /* print SIZE in bytes */
  41         unsigned int inverse:1;         /* print inverse dependencies */
  42         unsigned int nodeps:1;          /* don't print slaves/holders */
  43         unsigned int scsi:1;            /* print only device with HCTL (SCSI) */
  44         unsigned int paths:1;           /* print devnames with "/dev" prefix */
  45         unsigned int sort_hidden:1;     /* sort column not between output columns */
  46         unsigned int force_tree_order:1;/* sort lines by parent->tree relation */
  47 };
  48
  49 extern struct lsblk *lsblk;     /* global handler */
  50
  51 struct blkdev_cxt {
  52         struct blkdev_cxt *parent;
  53
  54         struct libscols_line *scols_line;
  55         struct stat     st;
  56
  57         char *name;             /* kernel name in /sys/block */
  58         char *dm_name;          /* DM name (dm/block) */
  59
  60         char *filename;         /* path to device node */
  61
  62         struct path_cxt *sysfs;
  63
  64         int partition;          /* is partition? TRUE/FALSE */
  65
  66         int probed;             /* already probed */
  67         char *fstype;           /* detected fs, NULL or "?" if cannot detect */
  68         char *uuid;             /* filesystem UUID (or stack uuid) */
  69         char *ptuuid;           /* partition table UUID */
  70         char *pttype;           /* partition table type */
  71         char *label;            /* filesystem label */
  72         char *parttype;         /* partition type UUID */
  73         char *partuuid;         /* partition UUID */
  74         char *partlabel;        /* partition label */
  75         char *partflags;        /* partition flags */
  76         char *wwn;              /* storage WWN */
  77         char *serial;           /* disk serial number */
  78         char *model;            /* disk model */
  79
  80         char *mountpoint;       /* device mountpoint */
  81         struct statvfs fsstat;  /* statvfs() result */
  82
  83         int npartitions;        /* # of partitions this device has */
  84         int nholders;           /* # of devices mapped directly to this device
  85                                  * /sys/block/.../holders */
  86         int nslaves;            /* # of devices this device maps to */
  87         int maj, min;           /* devno */
  88         int discard;            /* supports discard */
  89
  90         uint64_t size;          /* device size */
  91
  92         unsigned int    is_mounted : 1;
  93 };
  94
  95 /* lsblk-mnt.c */
  96 extern void lsblk_mnt_init(void);
  97 extern void lsblk_mnt_deinit(void);
  98
  99 extern char *lsblk_device_get_mountpoint(struct blkdev_cxt *cxt);
 100
 101 #endif /* UTIL_LINUX_LSBLK_H */