getfsstat(2) [osf1 man page]

getfsstat(2)							System Calls Manual						      getfsstat(2)

NAME

       getfsstat - Gets list of all mounted file systems

SYNOPSIS

       #include <sys/types.h> #include <sys/mount.h>
       getfsstat(      struct statfs buf[],	 long bufsize,	    int flags );

PARAMETERS

       An array of statfs structures.  Specifies the size in bytes of the buf parameter.  Specifies one of the following flags: Wait for an update
       from each file system before returning information.  Information is returned without requesting an update from each file system. Thus, some
       of  the	information  will  be  out of date, but the getfsstat() function will not block waiting for information from a file system that is
       unable to respond.

DESCRIPTION

       The getfsstat() function returns information about all mounted file systems. Upon successful completion, the buffer pointed to by  the  buf
       parameter is filled with an array of statfs structures, one for each mounted file system up to the size specified by the bufsize parameter.

       If the buf parameter is given as 0 (zero), the getfsstat() function returns just the number of mounted file systems.

RETURN VALUE

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

ERRORS

       If the getfsstat() function fails, errno may be set to one of the following values: The buf parameter points to an invalid address.  An I/O
       error occurred while reading from or writing to the file system.  [Tru64 UNIX]  The structure pointed to by the buf parameter  cannot  cor-
       rectly represent the value to be returned.

	      This  error  can	occur  in applications compiled on DIGITAL UNIX systems, on Tru64 UNIX systems earlier than Version 5.0, or on any
	      system while using the __V40_OBJ_COMPAT compiler macro.  These applications use a <statfs> structure not compatible with Tru64  UNIX
	      Version 5.0 for the following fields: f_blocks, f_bfree, f_bavail, f_mntonname, f_mntfromname.

RELATED INFORMATION

       Functions: statfs(2)

       Commands: mount(8) delim off

																      getfsstat(2)

GETFSSTAT(2)						      BSD System Calls Manual						      GETFSSTAT(2)

NAME

     getfsstat -- get list of all mounted file systems

SYNOPSIS

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

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

TRANSITIIONAL SYNOPSIS (NOW DEPRECATED)
     int
     getfsstat64(struct statfs64 *buf, int bufsize, int flags);

DESCRIPTION

     The getfsstat() function returns information about all mounted file systems.  The buf argument is a pointer to an array of statfs structures
     (see statfs(2)).  As statfs(2) indicates, the structure is defined differently depending on whether the macro _DARWIN_FEATURE_64_BIT_INODE is
     defined (see stat(2) for more information on this macro).

     Fields that are undefined for a particular file system are set to -1.  The buffer is filled with an array of statfs 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.

     If flags is set to MNT_NOWAIT, getfsstat() will directly return the information retained in the kernel to avoid delays caused by waiting for
     updated information from a file system that is perhaps temporarily unable to respond.  Some of the information returned may be out of date,
     however; if flags is set to MNT_WAIT or MNT_DWAIT instead, getfsstat() will request updated information from each mounted filesystem before
     returning.

RETURN VALUES

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

ERRORS

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

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

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

TRANSITIONAL DESCRIPTION (NOW DEPRECATED)
     The getfsstat64() routine is equivalent to the default getfstat() (when _DARWIN_FEATURE_64_BIT_INODE is defined), so there is no longer any
     reason to use it (it will be removed in the future).

SEE ALSO

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

HISTORY

     The getfsstat() function first appeared in 4.4BSD.

BSD
								   Oct 28, 2008 							       BSD