GETMNTINFO(3)

GETMNTINFO(3) | Library Functions Manual | GETMNTINFO(3)

# NAME

`getmntinfo` —
get information about mounted file systems

# LIBRARY

Standard C Library (libc, -lc)

# SYNOPSIS

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

int
`getmntinfo`(struct statvfs **mntbufp, int flags);

# DESCRIPTION

The `getmntinfo`() function returns an array of statvfs structures describing each currently mounted file system (see statvfs(2)).

The `getmntinfo`() function passes its flags parameter transparently to getvfsstat(2).

# RETURN VALUES

On successful completion, `getmntinfo`() returns a count of the number of elements in the array. The pointer to the array is stored into mntbufp.

If an error occurs, zero is returned and the external variable errno is set to indicate the error. Although the pointer mntbufp will be unmodified, any information previously returned by `getmntinfo`() will be lost.

# ERRORS

The `getmntinfo`() function may fail and set errno for any of the errors specified for the library routines getvfsstat(2) or malloc(3).

# SEE ALSO

getvfsstat(2), mount(2), statvfs(2), mount(8)

# HISTORY

The `getmntinfo`() function first appeared in 4.4BSD. It was converted from using `getfsstat`() to getvfsstat(2) in NetBSD 3.0.

# BUGS

The `getmntinfo`() function writes the array of structures to an internal static object and returns a pointer to that object. Subsequent calls to `getmntinfo`() will modify the same object.

The memory allocated by `getmntinfo`() cannot be free(3)'d by the application.

June 2, 2016 | NetBSD 9.0