#include <linux/init.h>
#include <linux/mm.h>
#include <linux/security.h>
#include <linux/sysctl.h>

/* amount of vm to protect from userspace access by both DAC and the LSM*/
unsigned long mmap_min_addr;
/* amount of vm to protect from userspace using CAP_SYS_RAWIO (DAC) */
unsigned long dac_mmap_min_addr = CONFIG_DEFAULT_MMAP_MIN_ADDR;
/* amount of vm to protect from userspace using the LSM = CONFIG_LSM_MMAP_MIN_ADDR */

/*
 * Update mmap_min_addr = max(dac_mmap_min_addr, CONFIG_LSM_MMAP_MIN_ADDR)
 */
static void update_mmap_min_addr(void)
{
#ifdef CONFIG_LSM_MMAP_MIN_ADDR
	if (dac_mmap_min_addr > CONFIG_LSM_MMAP_MIN_ADDR)
		mmap_min_addr = dac_mmap_min_addr;
	else
		mmap_min_addr = CONFIG_LSM_MMAP_MIN_ADDR;
#else
	mmap_min_addr = dac_mmap_min_addr;
#endif
}

/*
 * sysctl handler which just sets dac_mmap_min_addr = the new value and then
 * calls update_mmap_min_addr() so non MAP_FIXED hints get rounded properly
 */
int mmap_min_addr_handler(struct ctl_table *table, int write,
			  void __user *buffer, size_t *lenp, loff_t *ppos)
{
	int ret;

	if (write && !capable(CAP_SYS_RAWIO))
		return -EPERM;

	ret = proc_doulongvec_minmax(table, write, buffer, lenp, ppos);

	update_mmap_min_addr();

	return ret;
}

static int __init init_mmap_min_addr(void)
{
	update_mmap_min_addr();

	return 0;
}
pure_initcall(init_mmap_min_addr);
ion>
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<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
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<a href='/cgit.cgi/linux/net-next.git/'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/include/dt-bindings/clock/r8a7794-clock.h'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/include/dt-bindings/clock/r8a7794-clock.h?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/clock/r8a7794-clock.h?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/include/dt-bindings/clock/r8a7794-clock.h?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/dt-bindings/clock/r8a7794-clock.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16'>dt-bindings</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/clock?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16'>clock</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/clock/r8a7794-clock.h?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16'>r8a7794-clock.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='9ffc66941df278c9f4df979b6bcf6c6ddafedd16'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='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>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-10-15 10:03:15 -0700</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-10-15 10:03:15 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/clock/r8a7794-clock.h?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16'>9ffc66941df278c9f4df979b6bcf6c6ddafedd16</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/dt-bindings/clock/r8a7794-clock.h?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16'>a2cff20aafb7ecb352a0c2dd41a5430f64a248e0</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/dt-bindings/clock/r8a7794-clock.h?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16'>include/dt-bindings/clock/r8a7794-clock.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/clock/r8a7794-clock.h?id=133d970e0dadf7b413db19893acc5b26664bf4a1'>133d970e0dadf7b413db19893acc5b26664bf4a1</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/dt-bindings/clock/r8a7794-clock.h?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16&amp;id2=133d970e0dadf7b413db19893acc5b26664bf4a1'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/dt-bindings/clock/r8a7794-clock.h?id=0766f788eb727e2e330d55d30545db65bcf2623f'>0766f788eb727e2e330d55d30545db65bcf2623f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/dt-bindings/clock/r8a7794-clock.h?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16&amp;id2=0766f788eb727e2e330d55d30545db65bcf2623f'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'gcc-plugins-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux</div><div class='commit-msg'>Pull gcc plugins update from Kees Cook:
 "This adds a new gcc plugin named "latent_entropy". It is designed to
  extract as much possible uncertainty from a running system at boot
  time as possible, hoping to capitalize on any possible variation in
  CPU operation (due to runtime data differences, hardware differences,
  SMP ordering, thermal timing variation, cache behavior, etc).

  At the very least, this plugin is a much more comprehensive example
  for how to manipulate kernel code using the gcc plugin internals"

* tag 'gcc-plugins-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  latent_entropy: Mark functions with __latent_entropy
  gcc-plugins: Add latent_entropy plugin
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=9ffc66941df278c9f4df979b6bcf6c6ddafedd16'>Diffstat</a> (limited to 'include/dt-bindings/clock/r8a7794-clock.h')</div><table summary='diffstat' class='diffstat'>