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Sprite 1984 - 1993
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open.c,v
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1991-11-27
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281 lines
head 1.7;
branch ;
access ;
symbols sprited:1.7.1;
locks ; strict;
comment @ * @;
1.7
date 88.11.03.08.42.16; author ouster; state Exp;
branches 1.7.1.1;
next 1.6;
1.6
date 88.11.02.16.19.13; author ouster; state Exp;
branches ;
next 1.5;
1.5
date 88.09.30.08.35.30; author brent; state Exp;
branches ;
next 1.4;
1.4
date 88.07.29.17.39.09; author ouster; state Exp;
branches ;
next 1.3;
1.3
date 88.06.29.09.15.27; author ouster; state Exp;
branches ;
next 1.2;
1.2
date 88.06.21.11.36.53; author ouster; state Exp;
branches ;
next 1.1;
1.1
date 88.06.19.14.31.39; author ouster; state Exp;
branches ;
next ;
1.7.1.1
date 91.11.27.13.12.38; author kupfer; state Exp;
branches ;
next ;
desc
@@
1.7
log
@Bug in the change I made yesterday.
@
text
@/*
* open.c --
*
* Procedure to map from Unix open system call to Sprite.
*
* Copyright (C) 1986 Regents of the University of California
* All rights reserved.
*/
#ifndef lint
static char rcsid[] = "$Header: /sprite/src/lib/c/unixSyscall/RCS/open.c,v 1.6 88/11/02 16:19:13 ouster Exp $ SPRITE (Berkeley)";
#endif not lint
#include <sprite.h>
#include <stdio.h>
#include <fs.h>
#include "compatInt.h"
#include <sys/file.h>
#include <errno.h>
#include <status.h>
/*
*----------------------------------------------------------------------
*
* open --
*
* Procedure to map from Unix open system call to Sprite Fs_Open.
* Mostly this has to map the usageFlags argument
*
* Results:
* UNIX_ERROR is returned upon error, with the actual error code
* stored in errno. A file descriptor is returned upon success.
*
* Side effects:
* Opening a file sets up state in the filesystem until the file is
* closed.
*
*----------------------------------------------------------------------
*/
/* VARARGS2 */
int
open(pathName, unixFlags, permissions)
char *pathName; /* The name of the file to open */
register int unixFlags; /* O_RDONLY O_WRONLY O_RDWR O_NDELAY
* O_APPEND O_CREAT O_TRUNC O_EXCL */
int permissions; /* Permission mask to use on creation */
{
int streamId; /* place to hold stream id allocated by
* Fs_Open */
ReturnStatus status; /* result returned by Fs_Open */
register int useFlags = 0; /* Sprite version of flags */
/*
* Convert unixFlags to FS_READ, etc.
*/
if (unixFlags & FASYNC) {
fprintf(stderr, "open - FASYNC not supported\n");
errno = EINVAL;
return(UNIX_ERROR);
}
if (unixFlags & O_RDWR) {
useFlags |= FS_READ|FS_WRITE;
} else if (unixFlags & O_WRONLY) {
useFlags |= FS_WRITE;
} else {
useFlags |= FS_READ;
}
if (unixFlags & FNDELAY) {
useFlags |= FS_NON_BLOCKING;
}
if (unixFlags & FAPPEND) {
useFlags |= FS_APPEND;
}
if (unixFlags & FTRUNC) {
useFlags |= FS_TRUNC;
}
if (unixFlags & FEXCL) {
useFlags |= FS_EXCLUSIVE;
}
if (unixFlags & O_MASTER) {
useFlags |= FS_PDEV_MASTER;
}
if (unixFlags & O_PFS_MASTER) {
useFlags |= FS_PFS_MASTER;
}
if (unixFlags & FCREAT) {
useFlags |= FS_CREATE;
}
status = Fs_Open(pathName, useFlags, permissions, &streamId);
if (status != SUCCESS) {
errno = Compat_MapCode(status);
return(UNIX_ERROR);
} else {
return(streamId);
}
}
@
1.7.1.1
log
@Initial branch for Sprite server.
@
text
@d11 1
a11 1
static char rcsid[] = "$Header: /sprite/src/lib/c/unixSyscall/RCS/open.c,v 1.7 88/11/03 08:42:16 ouster Exp $ SPRITE (Berkeley)";
@
1.6
log
@I don't understand why there were TWO calls to Fs_Open. This
was causing problems for mode O_CREAT|O_EXCL (the open wasn't
failing if the file already existed). So I took out the first
call.
@
text
@d11 1
a11 1
static char rcsid[] = "$Header: open.c,v 1.5 88/09/30 08:35:30 brent Exp $ SPRITE (Berkeley)";
d89 1
a89 1
if (unixFlags & O_EXCL) {
@
1.5
log
@Added O_PFS_MASTER flag for pseudo-filesystems
@
text
@d11 1
a11 1
static char rcsid[] = "$Header: open.c,v 1.4 88/07/29 17:39:09 ouster Exp $ SPRITE (Berkeley)";
d89 3
a93 4
if ((status == FS_FILE_NOT_FOUND) && (unixFlags & FCREAT)) {
useFlags |= FS_CREATE;
status = Fs_Open (pathName, useFlags, permissions, &streamId);
}
@
1.4
log
@Lint.
@
text
@d11 1
a11 1
static char rcsid[] = "$Header: open.c,v 1.3 88/06/29 09:15:27 ouster Exp $ SPRITE (Berkeley)";
d84 4
a87 1
useFlags |= FS_NEW_MASTER;
@
1.3
log
@Support pseudo-devices, fix bug in handling O_WRONLY.
@
text
@d11 1
a11 1
static char rcsid[] = "$Header: open.c,v 1.2 88/06/21 11:36:53 ouster Exp $ SPRITE (Berkeley)";
d42 1
@
1.2
log
@Must include status.h.
@
text
@d11 1
a11 1
static char rcsid[] = "$Header: open.c,v 1.1 88/06/19 14:31:39 ouster Exp $ SPRITE (Berkeley)";
d55 1
a55 5
* Convert unixFlags to FS_READ, etc. Because O_RDONLY == 0, and
* O_WRONLY == 1, and O_RDWR == 2, you can add 1 to the flags to
* get the low order bit set when you need reading, and the second
* bit set when you need writing. The next flag up is 0x4, so it
* doesn't get affected. Isn't this great...
d57 1
a57 1
unixFlags += 1;
d63 5
a67 1
if (unixFlags & FREAD) {
a69 3
if (unixFlags & FWRITE) {
useFlags |= FS_WRITE;
}
d82 2
a83 2
if (unixFlags & FREAD) {
useFlags |= FS_READ;
@
1.1
log
@Initial revision
@
text
@d11 1
a11 1
static char rcsid[] = "$Header: open.c,v 1.7 87/09/26 04:56:45 deboor Exp $ SPRITE (Berkeley)";
d14 1
a14 1
#include "sprite.h"
d16 1
a16 1
#include "fs.h"
d20 1
@