+/*
+ * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
+ * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
+ * Copyright (c) 1993-1996 Rick Sladkey <jrs@world.std.com>
+ * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
+ * Copyright (c) 2005 Roland McGrath <roland@redhat.com>
+ * Copyright (c) 2007-2015 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
#include "defs.h"
-#define MS_RDONLY 1 /* Mount read-only */
-#define MS_NOSUID 2 /* Ignore suid and sgid bits */
-#define MS_NODEV 4 /* Disallow access to device special files */
-#define MS_NOEXEC 8 /* Disallow program execution */
-#define MS_SYNCHRONOUS 16 /* Writes are synced at once */
-#define MS_REMOUNT 32 /* Alter flags of a mounted FS */
-#define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */
-#define MS_DIRSYNC 128 /* Directory modifications are synchronous */
-#define MS_NOATIME 1024 /* Do not update access times. */
-#define MS_NODIRATIME 2048 /* Do not update directory access times */
-#define MS_BIND 4096
-#define MS_MOVE 8192
-#define MS_REC 16384
-#define MS_SILENT 32768
-#define MS_POSIXACL (1<<16) /* VFS does not apply the umask */
-#define MS_UNBINDABLE (1<<17) /* change to unbindable */
-#define MS_PRIVATE (1<<18) /* change to private */
-#define MS_SLAVE (1<<19) /* change to slave */
-#define MS_SHARED (1<<20) /* change to shared */
-#define MS_RELATIME (1<<21)
-#define MS_KERNMOUNT (1<<22)
-#define MS_I_VERSION (1<<23)
-#define MS_STRICTATIME (1<<24)
-#define MS_NOSEC (1<<28)
-#define MS_BORN (1<<29)
-#define MS_ACTIVE (1<<30)
-#define MS_NOUSER (1<<31)
-#define MS_MGC_VAL 0xc0ed0000 /* Magic flag number */
-#define MS_MGC_MSK 0xffff0000 /* Magic flag mask */
+#define MS_MGC_VAL 0xc0ed0000 /* old magic mount flag number */
+#define MS_MGC_MSK 0xffff0000 /* old magic mount flag mask */
#include "xlat/mount_flags.h"
SYS_FUNC(mount)
{
- if (entering(tcp)) {
- int ignore_type = 0, ignore_data = 0;
- unsigned long flags = tcp->u_arg[3];
-
- /* Discard magic */
- if ((flags & MS_MGC_MSK) == MS_MGC_VAL)
- flags &= ~MS_MGC_MSK;
+ bool ignore_type = false;
+ bool ignore_data = false;
+ bool old_magic = false;
+ unsigned long flags = tcp->u_arg[3];
- if (flags & MS_REMOUNT)
- ignore_type = 1;
- else if (flags & (MS_BIND | MS_MOVE))
- ignore_type = ignore_data = 1;
+ /* Discard magic */
+ if ((flags & MS_MGC_MSK) == MS_MGC_VAL) {
+ flags &= ~MS_MGC_MSK;
+ old_magic = true;
+ }
- printpath(tcp, tcp->u_arg[0]);
- tprints(", ");
+ if (flags & MS_REMOUNT)
+ ignore_type = true;
+ else if (flags & (MS_BIND | MS_MOVE | MS_SHARED
+ | MS_PRIVATE | MS_SLAVE | MS_UNBINDABLE))
+ ignore_type = ignore_data = true;
- printpath(tcp, tcp->u_arg[1]);
- tprints(", ");
+ printpath(tcp, tcp->u_arg[0]);
+ tprints(", ");
- if (ignore_type && tcp->u_arg[2])
- tprintf("%#lx", tcp->u_arg[2]);
- else
- printstr(tcp, tcp->u_arg[2], -1);
- tprints(", ");
+ printpath(tcp, tcp->u_arg[1]);
+ tprints(", ");
- printflags(mount_flags, tcp->u_arg[3], "MS_???");
- tprints(", ");
+ if (ignore_type)
+ printaddr(tcp->u_arg[2]);
+ else
+ printstr(tcp, tcp->u_arg[2], -1);
+ tprints(", ");
- if (ignore_data && tcp->u_arg[4])
- tprintf("%#lx", tcp->u_arg[4]);
- else
- printstr(tcp, tcp->u_arg[4], -1);
+ if (old_magic) {
+ tprints("MS_MGC_VAL");
+ if (flags)
+ tprints("|");
}
- return 0;
+ if (flags || !old_magic)
+ printflags_long(mount_flags, flags, "MS_???");
+ tprints(", ");
+
+ if (ignore_data)
+ printaddr(tcp->u_arg[4]);
+ else
+ printstr(tcp, tcp->u_arg[4], -1);
+
+ return RVAL_DECODED;
}
projects / strace / blobdiff