.\" Copyright (c) 1989, 1991 The Regents of the University of California.
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\"	@(#)statfs.2	6.5 (Berkeley) 7/23/91
.\"
.\" Modified Sat Jul 24 11:27:31 1993 by Rik Faith (faith@cs.unc.edu)
.\"
.\" Japanese Version Copyright (c) 1997 HANATAKA Shinya
.\"         all rights reserved.
.\" Translated Fri Dec 12 00:25:54 JST 1997
.\"         by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\"
.\"WORD:	file system		ե롦ƥ
.\"WORD:	mount			ޥ
.\"WORD:	pointer			ݥ󥿡
.\"WORD:	descriptor		ǥץ
.\"WORD:	open			ץ
.\"WORD:	symbolic link		ܥå
.\"WORD:	open			ץ
.\"
.TH STATFS 2 "21 August 1997" "Linux 2.0.30" "Linux Programmer's Manual"
.SH ̾
statfs, fstatfs \- ե롦ƥ(file system)פ
.SH 
.B #include <sys/vfs.h>
.sp
.BI "int statfs(const char *" path ", struct statfs *" buf );
.br
.BI "int fstatfs(int " fd ", struct statfs *" buf );
.SH 
.B statfs
ϥޥ(mount)줿ե롦ƥˤĤƤξ֤
.I path
ϥޥȤ줿ե롦ƥˤեΥѥ̾
.I buf
ϰʲΤ褦
.I statfs
¤ΤؤΥݥ󥿡:

.RS
.nf
struct statfs {
   long    f_type;     /* type of filesystem (see below) */
   long    f_bsize;    /* optimal transfer block size */
   long    f_blocks;   /* total data blocks in file system */
   long    f_bfree;    /* free blocks in fs */
   long    f_bavail;   /* free blocks avail to non-superuser */
   long    f_files;    /* total file nodes in file system */
   long    f_ffree;    /* free file nodes in fs */
   fsid_t  f_fsid;     /* file system id */
   long    f_namelen;  /* maximum length of filenames */
   long    f_spare[6]; /* spare for later */
};

ե롦ƥη:
linux/affs_fs.h:
   AFFS_SUPER_MAGIC      0xADFF
linux/ext_fs.h:
   EXT_SUPER_MAGIC       0x137D
linux/ext2_fs.h:
   EXT2_OLD_SUPER_MAGIC  0xEF51
   EXT2_SUPER_MAGIC      0xEF53
linux/hpfs_fs.h:
   HPFS_SUPER_MAGIC      0xF995E849
linux/iso_fs.h:
   ISOFS_SUPER_MAGIC     0x9660
linux/minix_fs.h:
   MINIX_SUPER_MAGIC     0x137F /* orig. minix */
   MINIX_SUPER_MAGIC2    0x138F /* 30 char minix */
   MINIX2_SUPER_MAGIC    0x2468 /* minix V2 */
   MINIX2_SUPER_MAGIC2   0x2478 /* minix V2, 30 char names */
linux/msdos_fs.h:
   MSDOS_SUPER_MAGIC     0x4d44
linux/ncp_fs.h:
   NCP_SUPER_MAGIC       0x564c
linux/nfs_fs.h:
   NFS_SUPER_MAGIC       0x6969
linux/proc_fs.h:
   PROC_SUPER_MAGIC      0x9fa0
linux/smb_fs.h:
   SMB_SUPER_MAGIC       0x517B
linux/sysv_fs.h:
   XENIX_SUPER_MAGIC     0x012FF7B4
   SYSV4_SUPER_MAGIC     0x012FF7B5
   SYSV2_SUPER_MAGIC     0x012FF7B6
   COH_SUPER_MAGIC       0x012FF7B7
linux/ufs_fs.h:
   UFS_MAGIC             0x00011954
linux/xia_fs.h:
   _XIAFS_SUPER_MAGIC    0x012FD16D
.fi
.RE
.PP
줾Υե롦ƥˤ̤Υեɤ \-1 
ꤵ롣
.B fstatfs
ϥǥץ(descriptor) 
.IR fd
ˤäƻȤ륪ץ(open)줿եˤĤơƱ֤

.SH ֤
Х֤롣顼ξ \-1 ֤졢
.I errno
Ŭڤꤵ롣
.SH 顼
.BR statfs 
ˤƤ :
.TP
.B ENOTDIR
.I path
Υǥ쥯ȥʬǥ쥯ȥǤʤ
.TP
.TP
.B ENAMETOOLONG
.I path
Ĺ᤮롣
.TP
.B ENOENT
.I path
ˤäƻȤե뤬¸ߤƤʤ
.TP
.B EACCES
.IR path 
Υǥ쥯ȥʬ˸ĤͿƤʤ
.TP
.B ELOOP
.IR path 
Υܥå(symbolic link)¿롣
.TP
.B EFAULT
.I buf
ޤ
.I path
ʥɥ쥹ؤƤ롣
.TP
.B EIO
ե롦ƥɤ߹ߡ񤭹ߤδ֤ I/O 顼ȯ
.TP
.B ENOMEM
ͥ˽ʬʥ꤬ʤ
.TP
.B ENOSYS
.I path
Τե륷ƥब
.BR statfs 
򥵥ݡȤƤʤ
.PP
.BR fstatfs ˤĤƤ:
.TP
.B EBADF
.I fd
ץ󤵤줿ե롦ǥץǤϤʤ
.TP
.B EFAULT
.I buf
ʥɥ쥹ؤƤ롣
.TP
.B EIO
ե롦ƥɤ߹ߡ񤭹ߤδ֤ I/O 顼ȯ
.TP
.B ENOSYS
.I fd
Τե롦ƥब
.BR statfs 
򥵥ݡȤƤʤ
.SH 
4.4BSD
.SH Ϣ
.BR stat (2)