ioctl_fs - filesystem operations

NAME  LIBRARY  SYNOPSIS  DESCRIPTION  Share some of the data of one file with another file  Operations for inode flags  Get or set a filesystem label  Get and/or clear page flags  RETURN VALUE  STANDARDS  SEE ALSO 

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NAME

ioctl_fs − filesystem operations

LIBRARY

Standard C library (libc, −lc)

SYNOPSIS

#include <linux/fs.h> /* Definition of op constants */
#include <sys/ioctl.h>

int ioctl(int fd, unsigned long op, ...);

DESCRIPTION

The following op values are available.

Share some of the data of one file with another file

FICLONE(2const)
FICLONERANGE(2const)
FIDEDUPERANGE(2const)

Operations for inode flags

FS_IOC_GETFLAGS(2const)
FS_IOC_SETFLAGS(2const)

Get or set a filesystem label

FS_IOC_GETFSLABEL(2const)
FS_IOC_SETFSLABEL(2const)

Get and/or clear page flags

PAGEMAP_SCAN(2const)

RETURN VALUE

On success, a nonnegative value is returned. On error, −1 is returned, and errno is set to indicate the error.

STANDARDS

Linux.

SEE ALSO

ioctl(2)

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