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open.2: EFBIG error is now EOVERFLOW (since Linux 2.6.24) 

When a 32-bit app opens a file whose size is too big to be
represented in 31-bits, POSIX.1 specifies the error EOVERFLOW.
Linux used to give EFBIG for this case, but 2.6.24 fixed this.

Also, add some text to describe the error scenario in
more detail.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2008-12-04 12:25:19 -05:00
parent fecaa19a28
commit 7c7fb55221
1 changed files with 23 additions and 12 deletions
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35
man2/open.2
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@ -47,7 +47,7 @@
.\" 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 2008-11-04 "Linux" "Linux Programmer's Manual"
.TH OPEN 2 2008-12-03 "Linux" "Linux Programmer's Manual"
.SH NAME
open, creat \- open and possibly create a file or device
.SH SYNOPSIS
@ -470,17 +470,8 @@ were used.
points outside your accessible address space.
.TP
.B EFBIG
.I pathname
refers to a regular file, too large to be opened; see
.B O_LARGEFILE
above.
(POSIX.1-2001 specifies the error
.B EOVERFLOW
for this case.)
.\" FIXME . Maybe this deviation from the standard will get repaired.
.\" See http://bugzilla.kernel.org/show_bug.cgi?id=7253
.\" "Open of a large file on 32-bit fails with EFBIG, should be EOVERFLOW"
.\" Reported 2006-10-03
See
.BR EOVERFLOW .
.TP
.B EINTR
While blocked waiting to complete an open of a slow device
@ -551,6 +542,26 @@ is set, the named file is a FIFO and
no process has the file open for reading.
Or, the file is a device special file and no corresponding device exists.
.TP
.B EOVERFLOW
.I pathname
refers to a regular file that is too large to be opened.
The usual scenario here is that an application compiled
on a 32-bit platform without
.I -D_FILE_OFF_SET_BITS=64
tried to open a file whose size exceeds
.I (2<<31)-1
bits;
see also
.B O_LARGEFILE
above.
This is the error specified by POSIX.1-2001;
in kernels before 2.6.24, Linux gave the error
.B EFBIG
for this case.
.\" See http://bugzilla.kernel.org/show_bug.cgi?id=7253
.\" "Open of a large file on 32-bit fails with EFBIG, should be EOVERFLOW"
.\" Reported 2006-10-03
.TP
.B EPERM
The
.B O_NOATIME