| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Fri, 2 Sep 2011 21:02:10 -0700
From: "H.J. Lu" <hjl.tools@...il.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Arnd Bergmann <arnd@...db.de>, "H. Peter Anvin" <hpa@...or.com>,
Christoph Hellwig <hch@...radead.org>,
LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
Thomas Gleixner <tglx@...utronix.de>,
Richard Kuo <rkuo@...eaurora.org>,
Mark Salter <msalter@...hat.com>,
Jonas Bonn <jonas@...thpole.se>,
Tobias Klauser <tklauser@...tanz.ch>
Subject: Re: RFD: x32 ABI system call numbers
On Fri, Sep 2, 2011 at 8:04 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
> On Fri, Sep 2, 2011 at 7:56 PM, H.J. Lu <hjl.tools@...il.com> wrote:
>>
>> We need to make decision on some system calls which take a pointer
>> to structure with long. For example, msg calls take a pointer to
>>
>> struct msgbuf {
>> long mtype; /* message type, must be > 0 */
>> char mtext[1]; /* message data */
>> };
>>
>> We have 3 choices:
>>
>> 1. Use long long for x32 and use 64bit msg system calls.
>
> I think this sounds like the best option. As many plain 64-bit system
> calls as humanly possible.
>
I defined __SNATIVE_LONG_TYPE and __UNATIVE_LONG_TYPE
in x32 header, which are native signed and unsigned long types. I
used them in
bits/ipc.h: __UNATIVE_LONG_TYPE __unused1;
bits/ipc.h: __UNATIVE_LONG_TYPE __unused2;
bits/mqueue.h: __SNATIVE_LONG_TYPE mq_flags; /* Message queue flags. */
bits/mqueue.h: __SNATIVE_LONG_TYPE mq_maxmsg; /* Maximum number of
messages. */
bits/mqueue.h: __SNATIVE_LONG_TYPE mq_msgsize; /* Maximum message size. */
bits/mqueue.h: __SNATIVE_LONG_TYPE mq_curmsgs; /* Number of messages
currently queued. */
bits/mqueue.h: __SNATIVE_LONG_TYPE __pad[4];
bits/msq.h:typedef __UNATIVE_LONG_TYPE msgqnum_t;
bits/msq.h:typedef __UNATIVE_LONG_TYPE msglen_t;
bits/msq.h: __UNATIVE_LONG_TYPE __msg_cbytes; /* current number of
bytes on queue */
bits/msq.h: __UNATIVE_LONG_TYPE __unused4;
bits/msq.h: __UNATIVE_LONG_TYPE __unused5;
bits/sem.h: __UNATIVE_LONG_TYPE sem_nsems; /* number of semaphores in set */
bits/sem.h: __UNATIVE_LONG_TYPE __unused3;
bits/sem.h: __UNATIVE_LONG_TYPE __unused4;
bits/shm.h:typedef __UNATIVE_LONG_TYPE shmatt_t;
bits/shm.h: __UNATIVE_LONG_TYPE __unused4;
bits/shm.h: __UNATIVE_LONG_TYPE __unused5;
bits/shm.h: __UNATIVE_LONG_TYPE shmmax;
bits/shm.h: __UNATIVE_LONG_TYPE shmmin;
bits/shm.h: __UNATIVE_LONG_TYPE shmmni;
bits/shm.h: __UNATIVE_LONG_TYPE shmseg;
bits/shm.h: __UNATIVE_LONG_TYPE shmall;
bits/shm.h: __UNATIVE_LONG_TYPE __unused1;
bits/shm.h: __UNATIVE_LONG_TYPE __unused2;
bits/shm.h: __UNATIVE_LONG_TYPE __unused3;
bits/shm.h: __UNATIVE_LONG_TYPE __unused4;
bits/shm.h: __UNATIVE_LONG_TYPE shm_tot; /* total allocated shm */
bits/shm.h: __UNATIVE_LONG_TYPE shm_rss; /* total resident shm */
bits/shm.h: __UNATIVE_LONG_TYPE shm_swp; /* total swapped shm */
bits/shm.h: __UNATIVE_LONG_TYPE swap_attempts;
bits/shm.h: __UNATIVE_LONG_TYPE swap_successes;
bits/statfs.h: __SNATIVE_LONG_TYPE f_type;
bits/statfs.h: __SNATIVE_LONG_TYPE f_bsize;
bits/statfs.h: __SNATIVE_LONG_TYPE f_namelen;
bits/statfs.h: __SNATIVE_LONG_TYPE f_frsize;
bits/statfs.h: __SNATIVE_LONG_TYPE f_flags;
bits/statfs.h: __SNATIVE_LONG_TYPE f_spare[4];
bits/statfs.h: __SNATIVE_LONG_TYPE f_type;
bits/statfs.h: __SNATIVE_LONG_TYPE f_bsize;
bits/statfs.h: __SNATIVE_LONG_TYPE f_namelen;
bits/statfs.h: __SNATIVE_LONG_TYPE f_frsize;
bits/statfs.h: __SNATIVE_LONG_TYPE f_flags;
bits/statfs.h: __SNATIVE_LONG_TYPE f_spare[4];
bits/stat.h: __UNATIVE_LONG_TYPE st_atimensec; /* Nscecs of last access. */
bits/stat.h: __UNATIVE_LONG_TYPE st_mtimensec; /* Nsecs of last
modification. */
bits/stat.h: __UNATIVE_LONG_TYPE st_ctimensec; /* Nsecs of last
status change. */
bits/stat.h: __UNATIVE_LONG_TYPE st_atimensec; /* Nscecs of last access. */
bits/stat.h: __UNATIVE_LONG_TYPE st_mtimensec; /* Nsecs of last
modification. */
bits/stat.h: __UNATIVE_LONG_TYPE st_ctimensec; /* Nsecs of last
status change. */
bits/timex.h: __SNATIVE_LONG_TYPE offset;/* time offset (usec) */
bits/timex.h: __SNATIVE_LONG_TYPE freq;/* frequency offset (scaled ppm) */
bits/timex.h: __SNATIVE_LONG_TYPE maxerror;/* maximum error (usec) */
bits/timex.h: __SNATIVE_LONG_TYPE esterror;/* estimated error (usec) */
bits/timex.h: __SNATIVE_LONG_TYPE constant;/* pll time constant */
bits/timex.h: __SNATIVE_LONG_TYPE precision;/* clock precision (usec)
(read only) */
bits/timex.h: __SNATIVE_LONG_TYPE tolerance;/* clock frequency
tolerance (ppm) (read only) */
bits/timex.h: __SNATIVE_LONG_TYPE tick;/* (modified) usecs between
clock ticks */
bits/timex.h: __SNATIVE_LONG_TYPE ppsfreq;/* pps frequency (scaled ppm) (ro) */
bits/timex.h: __SNATIVE_LONG_TYPE jitter;/* pps jitter (us) (ro) */
bits/timex.h: __SNATIVE_LONG_TYPE stabil;/* pps stability (scaled ppm) (ro) */
bits/timex.h: __SNATIVE_LONG_TYPE jitcnt;/* jitter limit exceeded (ro) */
bits/timex.h: __SNATIVE_LONG_TYPE calcnt;/* calibration intervals (ro) */
bits/timex.h: __SNATIVE_LONG_TYPE errcnt;/* calibration errors (ro) */
bits/timex.h: __SNATIVE_LONG_TYPE stbcnt;/* stability limit exceeded (ro) */
sys/msg.h: __SNATIVE_LONG_TYPE mtype; /* type of received/sent message */
and
/* POSIX.1b structure for a time value. This is like a `struct timeval' but
has nanoseconds instead of microseconds. */
struct timespec
{
__time_t tv_sec; /* Seconds. */
__SNATIVE_LONG_TYPE tv_nsec;/* Nanoseconds. */
};
so that I can use 64bit system calls directly.
--
H.J.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists