'\" t .\" Title: blkdev_get .\" Author: [FIXME: author] [see http://docbook.sf.net/el/author] .\" Generator: DocBook XSL Stylesheets v1.79.1 .\" Date: March 2017 .\" Manual: The Linux VFS .\" Source: Kernel Hackers Manual 4.10.7 .\" Language: English .\" .TH "BLKDEV_GET" "9" "March 2017" "Kernel Hackers Manual 4\&.10\&" "The Linux VFS" .\" ----------------------------------------------------------------- .\" * Define some portability stuff .\" ----------------------------------------------------------------- .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .\" http://bugs.debian.org/507673 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" ----------------------------------------------------------------- .\" * set default formatting .\" ----------------------------------------------------------------- .\" disable hyphenation .nh .\" disable justification (adjust text to left margin only) .ad l .\" ----------------------------------------------------------------- .\" * MAIN CONTENT STARTS HERE * .\" ----------------------------------------------------------------- .SH "NAME" blkdev_get \- open a block device .SH "SYNOPSIS" .HP \w'int\ blkdev_get('u .BI "int blkdev_get(struct\ block_device\ *\ " "bdev" ", fmode_t\ " "mode" ", void\ *\ " "holder" ");" .SH "ARGUMENTS" .PP \fIbdev\fR .RS 4 block_device to open .RE .PP \fImode\fR .RS 4 FMODE_* mask .RE .PP \fIholder\fR .RS 4 exclusive holder identifier .RE .SH "DESCRIPTION" .PP Open \fIbdev\fR with \fImode\fR\&. If \fImode\fR includes \fBFMODE_EXCL\fR, \fIbdev\fR is open with exclusive access\&. Specifying \fBFMODE_EXCL\fR with \fBNULL\fR \fIholder\fR is invalid\&. Exclusive opens may nest for the same \fIholder\fR\&. .PP On success, the reference count of \fIbdev\fR is unchanged\&. On failure, \fIbdev\fR is put\&. .SH "CONTEXT" .PP Might sleep\&. .SH "RETURN" .PP 0 on success, \-errno on failure\&. .SH "COPYRIGHT" .br