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NAME    [Toc]    [Back]

     getfsstat -- get list of all mounted file systems

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <sys/param.h>
     #include <sys/ucred.h>
     #include <sys/mount.h>

     getfsstat(struct statfs *buf, long bufsize, int flags);

DESCRIPTION    [Toc]    [Back]

     The getfsstat() system call returns information about all mounted file
     systems.  The buf argument is a pointer to statfs structures, as
     described in statfs(2).

     Fields that are undefined for a particular file system are set to -1.
     The buffer is filled with an array of fsstat structures, one for each
     mounted file system up to the size specified by bufsize.

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

     Normally flags should be specified as MNT_WAIT.  If flags is set to
     MNT_NOWAIT, getfsstat() 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     information will be out of date, but getfsstat() will not block waiting
     for information from a file system that is unable to respond.

RETURN VALUES    [Toc]    [Back]

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

ERRORS    [Toc]    [Back]

     The getfsstat() system call fails if one or more of the following are

     [EFAULT]		The buf argument points to an invalid address.

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

SEE ALSO    [Toc]    [Back]

     statfs(2), fstab(5), mount(8)

HISTORY    [Toc]    [Back]

     The getfsstat() system call first appeared in 4.4BSD.

FreeBSD 5.2.1		       November 20, 2003		 FreeBSD 5.2.1
[ Back ]
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