/*
 * memfd test file-system
 * This file uses FUSE to create a dummy file-system with only one file /memfd.
 * This file is read-only and takes 1s per read.
 *
 * This file-system is used by the memfd test-cases to force the kernel to pin
 * pages during reads(). Due to the 1s delay of this file-system, this is a
 * nice way to test race-conditions against get_user_pages() in the kernel.
 *
 * We use direct_io==1 to force the kernel to use direct-IO for this
 * file-system.
 */

#define FUSE_USE_VERSION 26

#include <fuse.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>

static const char memfd_content[] = "memfd-example-content";
static const char memfd_path[] = "/memfd";

static int memfd_getattr(const char *path, struct stat *st)
{
	memset(st, 0, sizeof(*st));

	if (!strcmp(path, "/")) {
		st->st_mode = S_IFDIR | 0755;
		st->st_nlink = 2;
	} else if (!strcmp(path, memfd_path)) {
		st->st_mode = S_IFREG | 0444;
		st->st_nlink = 1;
		st->st_size = strlen(memfd_content);
	} else {
		return -ENOENT;
	}

	return 0;
}

static int memfd_readdir(const char *path,
			 void *buf,
			 fuse_fill_dir_t filler,
			 off_t offset,
			 struct fuse_file_info *fi)
{
	if (strcmp(path, "/"))
		return -ENOENT;

	filler(buf, ".", NULL, 0);
	filler(buf, "..", NULL, 0);
	filler(buf, memfd_path + 1, NULL, 0);

	return 0;
}

static int memfd_open(const char *path, struct fuse_file_info *fi)
{
	if (strcmp(path, memfd_path))
		return -ENOENT;

	if ((fi->flags & 3) != O_RDONLY)
		return -EACCES;

	/* force direct-IO */
	fi->direct_io = 1;

	return 0;
}

static int memfd_read(const char *path,
		      char *buf,
		      size_t size,
		      off_t offset,
		      struct fuse_file_info *fi)
{
	size_t len;

	if (strcmp(path, memfd_path) != 0)
		return -ENOENT;

	sleep(1);

	len = strlen(memfd_content);
	if (offset < len) {
		if (offset + size > len)
			size = len - offset;

		memcpy(buf, memfd_content + offset, size);
	} else {
		size = 0;
	}

	return size;
}

static struct fuse_operations memfd_ops = {
	.getattr	= memfd_getattr,
	.readdir	= memfd_readdir,
	.open		= memfd_open,
	.read		= memfd_read,
};

int main(int argc, char *argv[])
{
	return fuse_main(argc, argv, &memfd_ops, NULL);
}
/linux/net-next.git/log/include/net/sctp/constants.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=a505e58252715bbc18a0ee1abae23615fe2586db'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=a505e58252715bbc18a0ee1abae23615fe2586db'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net?id=a505e58252715bbc18a0ee1abae23615fe2586db'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net/sctp?id=a505e58252715bbc18a0ee1abae23615fe2586db'>sctp</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/net/sctp/constants.h?id=a505e58252715bbc18a0ee1abae23615fe2586db'>constants.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='a505e58252715bbc18a0ee1abae23615fe2586db'/><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>Sowmini Varadhan &lt;sowmini.varadhan@oracle.com&gt;</td><td class='right'>2017-01-10 07:47:15 -0800</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-10 21:02:42 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/sctp/constants.h?id=a505e58252715bbc18a0ee1abae23615fe2586db'>a505e58252715bbc18a0ee1abae23615fe2586db</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/net/sctp/constants.h?id=a505e58252715bbc18a0ee1abae23615fe2586db'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=a505e58252715bbc18a0ee1abae23615fe2586db'>d816d838641ba1082b2356f4e3a365039e63b14d</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/net/sctp/constants.h?id=a505e58252715bbc18a0ee1abae23615fe2586db'>include/net/sctp/constants.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/net/sctp/constants.h?id=3bf003335ba356aac5a43e28640159d4ae8a2a60'>3bf003335ba356aac5a43e28640159d4ae8a2a60</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/net/sctp/constants.h?id=a505e58252715bbc18a0ee1abae23615fe2586db&amp;id2=3bf003335ba356aac5a43e28640159d4ae8a2a60'>diff</a>)</td></tr></table>
<div class='commit-subject'>packet: pdiag_put_ring() should return TX_RING info for TPACKET_V3</div><div class='commit-msg'>Commit 7f953ab2ba46 ("af_packet: TX_RING support for TPACKET_V3")
now makes it possible to use TX_RING with TPACKET_V3, so make the
the relevant information available via 'ss -e -a --packet'

Signed-off-by: Sowmini Varadhan &lt;sowmini.varadhan@oracle.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=a505e58252715bbc18a0ee1abae23615fe2586db'>Diffstat</a> (limited to 'include/net/sctp/constants.h')</div><table summary='diffstat' class='diffstat'>