#define _GNU_SOURCE
#include <sched.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/prctl.h>
#include <sys/wait.h>

#define pr_err(fmt, ...) \
		({ \
			fprintf(stderr, "%s:%d:" fmt ": %m\n", \
				__func__, __LINE__, ##__VA_ARGS__); \
			1; \
		})

#define NSIO	0xb7
#define NS_GET_USERNS   _IO(NSIO, 0x1)
#define NS_GET_PARENT   _IO(NSIO, 0x2)

#define __stack_aligned__	__attribute__((aligned(16)))
struct cr_clone_arg {
	char stack[128] __stack_aligned__;
	char stack_ptr[0];
};

static int child(void *args)
{
	prctl(PR_SET_PDEATHSIG, SIGKILL);
	while (1)
		sleep(1);
	exit(0);
}

int main(int argc, char *argv[])
{
	char *ns_strs[] = {"pid", "user"};
	char path[] = "/proc/0123456789/ns/pid";
	struct cr_clone_arg ca;
	struct stat st1, st2;
	int ns, pns, i;
	pid_t pid;

	pid = clone(child, ca.stack_ptr, CLONE_NEWUSER | CLONE_NEWPID | SIGCHLD, NULL);
	if (pid < 0)
		return pr_err("clone");

	for (i = 0; i < 2; i++) {
		snprintf(path, sizeof(path), "/proc/%d/ns/%s", pid, ns_strs[i]);
		ns = open(path, O_RDONLY);
		if (ns < 0)
			return pr_err("Unable to open %s", path);

		pns = ioctl(ns, NS_GET_PARENT);
		if (pns < 0)
			return pr_err("Unable to get a parent pidns");

		snprintf(path, sizeof(path), "/proc/self/ns/%s", ns_strs[i]);
		if (stat(path, &st2))
			return pr_err("Unable to stat %s", path);
		if (fstat(pns, &st1))
			return pr_err("Unable to stat the parent pidns");
		if (st1.st_ino != st2.st_ino)
			return pr_err("NS_GET_PARENT returned a wrong namespace");

		if (ioctl(pns, NS_GET_PARENT) >= 0 || errno != EPERM)
			return pr_err("Don't get EPERM");;
	}

	kill(pid, SIGKILL);
	wait(NULL);
	return 0;
}
git.cgi/linux/net-next.git/tree/sound/firewire/digi00x?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/sound/firewire/digi00x?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/sound/firewire/digi00x?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/sound/firewire/digi00x'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/firewire?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>firewire</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/firewire/digi00x?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>digi00x</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='11e3b725cfc282efe9d4a354153e99d86a16af08'/><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>Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;</td><td class='right'>2017-01-17 13:46:29 +0000</td></tr>
<tr><th>committer</th><td>Herbert Xu &lt;herbert@gondor.apana.org.au&gt;</td><td class='right'>2017-01-23 22:41:33 +0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/firewire/digi00x?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>11e3b725cfc282efe9d4a354153e99d86a16af08</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/firewire/digi00x?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>8b5b9e0e1bcae1ab98ee652ffb7b13b05c209bd6</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/firewire/digi00x?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>sound/firewire/digi00x</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/firewire/digi00x?id=d6040764adcb5cb6de1489422411d701c158bb69'>d6040764adcb5cb6de1489422411d701c158bb69</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/firewire/digi00x?id=11e3b725cfc282efe9d4a354153e99d86a16af08&amp;id2=d6040764adcb5cb6de1489422411d701c158bb69'>diff</a>)</td></tr></table>
<div class='commit-subject'>crypto: arm64/aes-blk - honour iv_out requirement in CBC and CTR modes</div><div class='commit-msg'>Update the ARMv8 Crypto Extensions and the plain NEON AES implementations
in CBC and CTR modes to return the next IV back to the skcipher API client.
This is necessary for chaining to work correctly.

Note that for CTR, this is only done if the request is a round multiple of
the block size, since otherwise, chaining is impossible anyway.

Cc: &lt;stable@vger.kernel.org&gt; # v3.16+
Signed-off-by: Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;
Signed-off-by: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>Diffstat</a> (limited to 'sound/firewire/digi00x')</div><table summary='diffstat' class='diffstat'>