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NetBSD 6.1.5 - man page for getvfsstat (netbsd section 2)

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GETVFSSTAT(2)			     BSD System Calls Manual			    GETVFSSTAT(2)

NAME
     getvfsstat -- get list of all mounted file systems

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <sys/types.h>
     #include <sys/statvfs.h>

     int
     getvfsstat(struct statvfs *buf, size_t bufsize, int flags);

DESCRIPTION
     getvfsstat() returns information about all mounted file systems.  buf is a pointer to an
     array of statvfs structures defined in statvfs(5).

     The buffer is filled with an array of statvfs structures, one for each mounted file system
     up to the size specified by bufsize.

     If buf is given as NULL, getvfsstat() returns just the number of mounted file systems.

     Normally flags should be specified as ST_WAIT.  If flags is set to ST_NOWAIT, getvfsstat()
     will return the information it has available without requesting an update from each file
     system.  Thus, some of the information will be out of date, but getvfsstat() will not block
     waiting for information from a file system that is unable to respond.

RETURN VALUES
     Upon successful completion, the number of statvfs structures is returned.	Otherwise, -1 is
     returned and the global variable errno is set to indicate the error.

ERRORS
     getvfsstat() fails if one or more of the following are true:

     [EFAULT]		buf points to an invalid address.

     [EIO]		An I/O error occurred while reading from or writing to the file system.

SEE ALSO
     statvfs(2), getmntinfo(3), fstab(5), mount(8)

HISTORY
     The getvfsstat() function first appeared in NetBSD 3.0 to replace getfsstat() which appeared
     in 4.4BSD.

BSD					   May 19, 2006 				      BSD
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