̾??

statfs — ?ե????륷???ƥ??????פ?????

?饤?֥???

Standard C Library (libc, -lc)

????

<sys/param.h> <sys/mount.h> int statfs(const char *path, struct statfs *buf) int fstatfs(int fd, struct statfs *buf)

????

statfs() ?????ƥॳ?????ϡ??ޥ????Ȥ????Ƥ????ե????륷???ƥ??ξ??????ᤷ?ޤ??? path ?????ϡ??ޥ????Ȥ????Ƥ????ե????륷???ƥ?????Ǥ?դΥե??????Υѥ?̾?Ǥ??? buf ?????ϡ??ʲ??Τ褦???????????Ƥ??? statfs ?ι?¤?ΤΥݥ??󥿤Ǥ?:

typedef struct fsid { int32_t val[2]; } fsid_t; /* ?ե????륷???ƥ? ID ?? */

/*
 * ?ե????륷???ƥ?????
 */

#define	MFSNAMELEN	16		/* ?̥????ޤ??ե????륷???ƥ?̾??Ĺ?? */
#define	MNAMELEN	90		/* ?????ͤ??ѤΥХåե???Ĺ?? */
#define	STATFS_VERSION	0x20030518	/* ???ߤΥС????????ֹ? */

struct statfs {
uint32_t f_version;		/* ??¤?ΤΥС????????ֹ? */
uint32_t f_type;		/* ?ե????륷???ƥ??Υ????? */
uint64_t f_flags;		/* ?ޥ????ȥե饰?Υ??ԡ? */
uint64_t f_bsize;		/* ?ե????륷???ƥ??????ҥ????? */
uint64_t f_iosize;		/* ??Ŭ??ž???֥??å??????? */
uint64_t f_blocks;		/* ?ե????륷???ƥ????ι??ץǡ????֥??å??????? */
uint64_t f_bfree;		/* ?ե????륷???ƥ????????Ѳ?ǽ?ʥ֥??å? */
int64_t	 f_bavail;		/* ?????ѥ桼???ʳ??????Ѳ?ǽ?ʥ֥??å? */
uint64_t f_files;		/* ?ե????륷???ƥ????ι??ץΡ??ɿ? */
int64_t	 f_ffree;		/* ?????ѥ桼???ʳ??????Ѳ?ǽ?ʥΡ??ɿ? */
uint64_t f_syncwrites;		/* ?ޥ????Ȥ??Ƥ?????Ʊ???????߿? */
uint64_t f_asyncwrites;		/* ?ޥ????Ȥ??Ƥ???????Ʊ???????߿? */
uint64_t f_syncreads;		/* ?ޥ????Ȥ??Ƥ?????Ʊ???ɼ????? */
uint64_t f_asyncreads;		/* ?ޥ????Ȥ??Ƥ???????Ʊ???ɼ????? */
uint64_t f_spare[10];		/* ̤?????ΰ? */
uint32_t f_namemax;		/* ?ե?????̾??Ĺ???κ??? */
uid_t	  f_owner;		/* ?ե????륷???ƥ????ޥ????Ȥ????桼?? */
fsid_t	  f_fsid;		/* ?ե????륷???ƥ? ID */
char	  f_charspare[80];	    /* ???Τ?????;?? */
char	  f_fstypename[MFSNAMELEN]; /* ?ե????륷???ƥ??Υ?????̾ */
char	  f_mntfromname[MNAMELEN];  /* ?ޥ????Ȥ??줿?ե????륷???ƥ? */
char	  f_mntonname[MNAMELEN];    /* ???Υǥ??쥯?ȥ??˥ޥ????? */
};

?ᤵ??????ǽ?????????ե饰?ϰʲ??ΤȤ????Ǥ?:

MNT_RDONLY

?ե????륷???ƥब?ɼ??????Ѥǥޥ????Ȥ????Ƥ??ޤ??? ?????ѥ桼???Ǥ????????ޤ?????

MNT_NOEXEC

???Υե????륷???ƥफ???ե????????¹ԤǤ??ޤ?????

MNT_NOSUID

?ե??????? setuid ?ӥåȤ? setgid ?ӥåȤ??? ?ե??????μ¹Ի??˼????????????ޤ?????

MNT_NODEV

?ե????륷???ƥ????ü??ե??????򳫤??ޤ?????

MNT_SYNCHRONOUS

?ե????륷???ƥ??ؤΤ??٤Ƥ??????Ϥ???Ʊ???????äƼ¹Ԥ????ޤ???

MNT_ASYNC

?ե????륷???ƥ????????Ϥ???Ʊ???????äƼ¹Ԥ????ޤ?????

MNT_SOFTDEP

???եȥ??åץǡ??Ȥ?ư??ޤ? (ffs(7) ?򻲾Ȥ??Ƥ???????)??

MNT_SUIDDIR

?ǥ??쥯?ȥ??? SUID ?ӥåȤ????̤˼??갷???ޤ???

MNT_UNION

???ؤΥե????륷???ƥ??ȤΥ??˥?????

MNT_NOSYMFOLLOW

?????ܥ??å????󥯤?é???ޤ?????

MNT_NOCLUSTERR

?ɤ߼??ꥯ?饹?????󥰤?̵???ˤʤäƤ??ޤ???

MNT_NOCLUSTERW

?񤭹??ߥ??饹?????󥰤?̵???ˤʤäƤ??ޤ???

MNT_MULTILABEL

?ƥ??֥??????Ȥ??Ф??? Mandatory Access Control (MAC) ???ݡ??? (mac(4) ?򻲾Ȥ??Ƥ???????)??

MNT_ACLS

Access Control List (ACL) ???ݡ??Ȥ?ͭ???ˤʤäƤ??ޤ???

MNT_LOCAL

?ե????륷???ƥब?????????˾??󤷤Ƥ??ޤ???

MNT_QUOTA

?ե????륷???ƥ??ǥ?????????ͭ???ˤʤäƤ??ޤ???

MNT_ROOTFS

?롼?ȥե????륷???ƥ?????ǧ???ޤ???

MNT_EXRDONLY

?ե????륷???ƥब???ɼ??????Ѥǥ??????ݡ??Ȥ????ޤ???

MNT_NOATIME

?ե????륢???????????ι?????̵???ˤʤäƤ??ޤ???

MNT_USER

?ե????륷???ƥब?桼???ˤ??äƥޥ????Ȥ????Ƥ??ޤ???

MNT_EXPORTED

?ե????륷???ƥब???ɤ߽񤭤?ξ???ǥ??????ݡ??Ȥ????ޤ???

MNT_DEFEXPORTED

?ե????륷???ƥब???ɤ߽񤭤?ξ???? Ǥ?դΥ??󥿡??ͥåȥۥ??Ȥ˥??????ݡ??Ȥ????ޤ???

MNT_EXPORTANON

?ե????륷???ƥब?????٤ƤΥ??⡼?ȥ?????????ƿ̾?桼???˥ޥåפ??ޤ???

MNT_EXKERB

?ե????륷???ƥब??Kerberos uid ?ޥåԥ󥰤ǥ??????ݡ??Ȥ????ޤ???

MNT_EXPUBLIC

?ե????륷???ƥब?????̸????????Ƥ??ޤ? (WebNFS)??

?????Υե????륷???ƥ????????????Ƥ??ʤ??ե??????ɤϡ?-1 ?????ꤵ???ޤ??? fstatfs() ?????ƥॳ?????ϡ????һ? fd ?ǻ??Ȥ????륪???ץ??ե????????Ф???Ʊ?????????ᤷ?ޤ???

??????

Upon successful completion, the value 0 is returned; otherwise the value -1 is returned and the global variable errno is set to indicate the error.

???顼

statfs() ?????ƥॳ?????ϡ??ʲ??Τ????? 1 ?İʾ夬???Ǥ????????˥??顼?Ȥʤ??ޤ?:

[ENOTDIR]

path ?Υѥ??ι??????????˥ǥ??쥯?ȥ??ʳ??Τ??Τ??ޤޤ??Ƥ??ޤ???

[ENAMETOOLONG]

path ?ι??????Ǥ? 255 ʸ?????ۤ??Ƥ??뤫???ޤ??? path ???Τ? 1023 ʸ?????ۤ??Ƥ??ޤ???

[ENOENT]

path ?λ??Ȥ????ե????뤬¸?ߤ??ޤ?????

[EACCES]

path ?ˤϡ??????????Ĥ????Ƥ??ʤ??ǥ??쥯?ȥ꤬?ޤޤ??Ƥ??ޤ???

[ELOOP]

path ???Ѵ??????Ȥ??˸??Ф??줿?????ܥ??å????󥯤?¿?????ޤ???

[EFAULT]

buf ?????ޤ??? path ?????????????ʥ??ɥ쥹???ؤ??Ƥ??ޤ???

[EIO]

?ե????륷???ƥ????ɤ߽񤭤??Ƥ????֤? ?????? ???顼??ȯ?????ޤ?????

fstatfs() ?????ƥॳ?????ϡ??ʲ??Τ??? 1 ?İʾ夬???Ǥ????????˥??顼?Ȥʤ??ޤ?:

[EBADF]

fd ??????ͭ???????ץ??ե????뵭?һҤǤϤ????ޤ?????

[EFAULT]

buf ???????????ʥ??ɥ쥹???ؤ??Ƥ??ޤ???

[EIO]

?ե????륷???ƥ????ɤ߽񤭤??Ƥ????֤? I/O (??????) ???顼??ȯ?????ޤ?????

????

statfs() ?????ƥॳ?????ϡ? 4.4BSD ?ǤϤ??????о줷?ޤ?????