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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 Thus, some of the information will be out of date, but the getfsstat() function will not block waiting for information from a file system that is unable to respond.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)

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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
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