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STATFS !!!STATFS NAME SYNOPSIS DESCRIPTION RETURN VALUE ERRORS CONFORMING TO SEE ALSO ---- !!NAME statfs, fstatfs - get file system statistics !!SYNOPSIS __#include __ __int statfs(const char *__''path''__, struct statfs *__''buf''__); int fstatfs(int__ ''fd''__, struct statfs *__''buf''__);__ !!DESCRIPTION __statfs__ returns information about a mounted file system. ''path'' is the path name of any file within the mounted filesystem. ''buf'' is a pointer to a ''statfs'' structure defined as follows: 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 */ }; File system types: linux/affs_fs.h: AFFS_SUPER_MAGIC 0xADFF linux/efs_fs.h: EFS_SUPER_MAGIC 0x00414A53 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/xfs_fs.h: XFS_SUPER_MAGIC 0x58465342 linux/xia_fs.h: _XIAFS_SUPER_MAGIC 0x012FD16D Fields that are undefined for a particular file system are set to 0. __fstatfs__ returns the same information about an open file referenced by descriptor ''fd''. !!RETURN VALUE On success, zero is returned. On error, -1 is returned, and ''errno'' is set appropriately. !!ERRORS For __statfs__: __ENOTDIR__ A component of the path prefix of ''path'' is not a directory. __ENAMETOOLONG__ ''path'' is too long. __ENOENT__ The file referred to by ''path'' does not exist. __EACCES__ Search permission is denied for a component of the path prefix of ''path''. __ELOOP__ Too many symbolic links were encountered in translating ''path''. __EFAULT__ ''Buf'' or ''path'' points to an invalid address. __EIO__ An I/O error occurred while reading from or writing to the file system. __ENOMEM__ Insufficient kernel memory was available. __ENOSYS__ The filesystem ''path'' is on does not support __statfs__. For __fstatfs__: __EBADF__ ''fd'' is not a valid open file descriptor. __EFAULT__ ''buf'' points to an invalid address. __EIO__ An I/O error occurred while reading from or writing to the file system. __ENOSYS__ The filesystem ''fd'' is open on does not support __statfs__. !!CONFORMING TO The Linux __statfs__ was inspired by the 4.4BSD one (but they do not use the same structure). !!SEE ALSO stat(2) ----
7 pages link to
statfs(2)
:
Man2s
fpathconf(3)
pathconf(3)
stat(1)
syscalls(2)
ustat(2)
fstatfs(2)
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