/*
 *  ipc/compat_mq.c
 *    32 bit emulation for POSIX message queue system calls
 *
 *    Copyright (C) 2004 IBM Deutschland Entwicklung GmbH, IBM Corporation
 *    Author: Arnd Bergmann <arnd@arndb.de>
 */

#include <linux/compat.h>
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/mqueue.h>
#include <linux/syscalls.h>

#include <linux/uaccess.h>

struct compat_mq_attr {
	compat_long_t mq_flags;      /* message queue flags		     */
	compat_long_t mq_maxmsg;     /* maximum number of messages	     */
	compat_long_t mq_msgsize;    /* maximum message size		     */
	compat_long_t mq_curmsgs;    /* number of messages currently queued  */
	compat_long_t __reserved[4]; /* ignored for input, zeroed for output */
};

static inline int get_compat_mq_attr(struct mq_attr *attr,
			const struct compat_mq_attr __user *uattr)
{
	if (!access_ok(VERIFY_READ, uattr, sizeof *uattr))
		return -EFAULT;

	return __get_user(attr->mq_flags, &uattr->mq_flags)
		| __get_user(attr->mq_maxmsg, &uattr->mq_maxmsg)
		| __get_user(attr->mq_msgsize, &uattr->mq_msgsize)
		| __get_user(attr->mq_curmsgs, &uattr->mq_curmsgs);
}

static inline int put_compat_mq_attr(const struct mq_attr *attr,
			struct compat_mq_attr __user *uattr)
{
	if (clear_user(uattr, sizeof *uattr))
		return -EFAULT;

	return __put_user(attr->mq_flags, &uattr->mq_flags)
		| __put_user(attr->mq_maxmsg, &uattr->mq_maxmsg)
		| __put_user(attr->mq_msgsize, &uattr->mq_msgsize)
		| __put_user(attr->mq_curmsgs, &uattr->mq_curmsgs);
}

COMPAT_SYSCALL_DEFINE4(mq_open, const char __user *, u_name,
		       int, oflag, compat_mode_t, mode,
		       struct compat_mq_attr __user *, u_attr)
{
	void __user *p = NULL;
	if (u_attr && oflag & O_CREAT) {
		struct mq_attr attr;

		memset(&attr, 0, sizeof(attr));

		p = compat_alloc_user_space(sizeof(attr));
		if (get_compat_mq_attr(&attr, u_attr) ||
		    copy_to_user(p, &attr, sizeof(attr)))
			return -EFAULT;
	}
	return sys_mq_open(u_name, oflag, mode, p);
}

COMPAT_SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes,
		       const char __user *, u_msg_ptr,
		       compat_size_t, msg_len, unsigned int, msg_prio,
		       const struct compat_timespec __user *, u_abs_timeout)
{
	struct timespec __user *u_ts;

	if (compat_convert_timespec(&u_ts, u_abs_timeout))
		return -EFAULT;

	return sys_mq_timedsend(mqdes, u_msg_ptr, msg_len,
			msg_prio, u_ts);
}

COMPAT_SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes,
		       char __user *, u_msg_ptr,
		       compat_size_t, msg_len, unsigned int __user *, u_msg_prio,
		       const struct compat_timespec __user *, u_abs_timeout)
{
	struct timespec __user *u_ts;

	if (compat_convert_timespec(&u_ts, u_abs_timeout))
		return -EFAULT;

	return sys_mq_timedreceive(mqdes, u_msg_ptr, msg_len,
			u_msg_prio, u_ts);
}

COMPAT_SYSCALL_DEFINE2(mq_notify, mqd_t, mqdes,
		       const struct compat_sigevent __user *, u_notification)
{
	struct sigevent __user *p = NULL;
	if (u_notification) {
		struct sigevent n;
		p = compat_alloc_user_space(sizeof(*p));
		if (get_compat_sigevent(&n, u_notification))
			return -EFAULT;
		if (n.sigev_notify == SIGEV_THREAD)
			n.sigev_value.sival_ptr = compat_ptr(n.sigev_value.sival_int);
		if (copy_to_user(p, &n, sizeof(*p)))
			return -EFAULT;
	}
	return sys_mq_notify(mqdes, p);
}

COMPAT_SYSCALL_DEFINE3(mq_getsetattr, mqd_t, mqdes,
		       const struct compat_mq_attr __user *, u_mqstat,
		       struct compat_mq_attr __user *, u_omqstat)
{
	struct mq_attr mqstat;
	struct mq_attr __user *p = compat_alloc_user_space(2 * sizeof(*p));
	long ret;

	memset(&mqstat, 0, sizeof(mqstat));

	if (u_mqstat) {
		if (get_compat_mq_attr(&mqstat, u_mqstat) ||
		    copy_to_user(p, &mqstat, sizeof(mqstat)))
			return -EFAULT;
	}
	ret = sys_mq_getsetattr(mqdes,
				u_mqstat ? p : NULL,
				u_omqstat ? p + 1 : NULL);
	if (ret)
		return ret;
	if (u_omqstat) {
		if (copy_from_user(&mqstat, p + 1, sizeof(mqstat)) ||
		    put_compat_mq_attr(&mqstat, u_omqstat))
			return -EFAULT;
	}
	return 0;
}
'35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Johannes Berg &lt;johannes.berg@intel.com&gt;</td><td class='right'>2017-01-26 17:15:44 +0100</td></tr>
<tr><th>committer</th><td>Johannes Berg &lt;johannes.berg@intel.com&gt;</td><td class='right'>2017-01-26 18:03:09 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/wireless/lib80211_crypt_ccmp.c?id=228c8c6b1f4376788e9d5ab00d50b10228eb40d3'>228c8c6b1f4376788e9d5ab00d50b10228eb40d3</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/wireless/lib80211_crypt_ccmp.c?id=228c8c6b1f4376788e9d5ab00d50b10228eb40d3'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=228c8c6b1f4376788e9d5ab00d50b10228eb40d3'>dfd7010fa9480284fe72bb2c4ab50a5225792a10</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/wireless/lib80211_crypt_ccmp.c?id=228c8c6b1f4376788e9d5ab00d50b10228eb40d3'>net/wireless/lib80211_crypt_ccmp.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/wireless/lib80211_crypt_ccmp.c?id=731977e97b3697454a862fec656c2561eabc0b87'>731977e97b3697454a862fec656c2561eabc0b87</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/wireless/lib80211_crypt_ccmp.c?id=228c8c6b1f4376788e9d5ab00d50b10228eb40d3&amp;id2=731977e97b3697454a862fec656c2561eabc0b87'>diff</a>)</td></tr></table>
<div class='commit-subject'>wireless: define cipher/AKM suites using a macro</div><div class='commit-msg'>The spec writes cipher/AKM suites as something like 00-0F-AC:9,
but the part after the colon isn't hex, it's decimal, so that
we've already had a few mistakes (in other code, or unmerged
patches) to e.g. write 0x000FAC10 instead of 0x000FAC0A.

Use a macro to avoid that problem.

Reviewed-by: Luca Coelho &lt;luciano.coelho@intel.com&gt;
Signed-off-by: Johannes Berg &lt;johannes.berg@intel.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=228c8c6b1f4376788e9d5ab00d50b10228eb40d3'>Diffstat</a> (limited to 'net/wireless/lib80211_crypt_ccmp.c')</div><table summary='diffstat' class='diffstat'>