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

# NAME

`getmntinfo` — get information about mounted file systems

# SYNOPSIS

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

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

# DESCRIPTION

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

The `getmntinfo`() function passes its flags parameter transparently to getfsstat(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 getfsstat(2) or malloc(3).

# SEE ALSO

getfsstat(2), mount(2), statfs(2), mount(8)

# HISTORY

The `getmntinfo`() function first appeared in 4.3BSD-Reno.

# 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.

July 30, 2022 | Debian