| STATVFS(5) | File Formats Manual | STATVFS(5) |
typedef struct { int32_t val[2]; } fsid_t; /* file system id type */
#define VFS_NAMELEN 32 /* length of fs type name, including nul */
#define VFS_MNAMELEN 1024 /* length of buffer for returned name */
struct statvfs {
unsigned long f_flag; /* copy of mount exported flags */
unsigned long f_bsize; /* system block size */
unsigned long f_frsize; /* system fragment size */
unsigned long f_iosize; /* optimal file system block size */
/* The following are in units of f_frsize */
fsblkcnt_t f_blocks; /* number of blocks in file system */
fsblkcnt_t f_bfree; /* free blocks avail in file system */
fsblkcnt_t f_bavail; /* free blocks avail to non-root */
fsblkcnt_t f_bresvd; /* blocks reserved for root */
fsfilcnt_t f_files; /* total file nodes in file system */
fsfilcnt_t f_ffree; /* free file nodes in file system */
fsfilcnt_t f_favail; /* free file nodes avail to non-root */
fsfilcnt_t f_fresvd; /* file nodes reserved for root */
uint64_t f_syncreads; /* count of sync reads since mount */
uint64_t f_syncwrites; /* count of sync writes since mount */
uint64_t f_asyncreads; /* count of async reads since mount */
uint64_t f_asyncwrites; /* count of async writes since mount */
unsigned long f_fsid; /* POSIX compliant file system id */
fsid_t f_fsidx; /* NetBSD compatible file system id */
unsigned long f_namemax;/* maximum filename length */
uid_t f_owner; /* user that mounted the file system */
uint32_t f_spare[4]; /* spare space */
char f_fstypename[VFS_NAMELEN]; /* fs type name */
char f_mntonname[VFS_MNAMELEN]; /* directory on which mounted */
char f_mntfromname[VFS_MNAMELEN]; /* mounted file system */
};
The f_flag argument can have the following bits set:
Fields that are undefined for a particular file system are set to -1.
old_bavail = f_bfree - f_bresvd;
| April 5, 2013 | NetBSD 7.2 |