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open.2: Note which filesystems support O_TMPFILE 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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Michael Kerrisk 2014-04-10 06:30:24 +02:00
parent 67aac6fbce
commit cde2074a45
1 changed files with 7 additions and 2 deletions
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man2/open.2
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@ -48,7 +48,7 @@
.\" FIXME . Apr 08: The next POSIX revision has O_EXEC, O_SEARCH, and
.\" O_TTYINIT. Eventually these may need to be documented. --mtk
.\"
.TH OPEN 2 2014-04-06 "Linux" "Linux Programmer's Manual"
.TH OPEN 2 2014-04-10 "Linux" "Linux Programmer's Manual"
.SH NAME
open, openat, creat \- open and possibly create a file
.SH SYNOPSIS
@ -693,8 +693,13 @@ as described above).
.IP
.B O_TMPFILE
requires support by the underlying filesystem;
.\" As at 3.13, there's support for at least ext2, ext3, ext4
only a subset of Linux filesystems provide that support.
In the initial implementation, support was provided in
the ex2, ext3, ext4, UDF, Minix, and shmem filesystems.
XFS support was added
.\" commit 99b6436bc29e4f10e4388c27a3e4810191cc4788
.\" commit ab29743117f9f4c22ac44c13c1647fb24fb2bafe
in Linux 3.15.
.TP
.B O_TRUNC
If the file already exists and is a regular file and the access mode allows