/*
 * Industrial I/O utilities - lsiio.c
 *
 * Copyright (c) 2010 Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 */

#include <string.h>
#include <dirent.h>
#include <stdio.h>
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/dir.h>
#include "iio_utils.h"

static enum verbosity {
	VERBLEVEL_DEFAULT,	/* 0 gives lspci behaviour */
	VERBLEVEL_SENSORS,	/* 1 lists sensors */
} verblevel = VERBLEVEL_DEFAULT;

const char *type_device = "iio:device";
const char *type_trigger = "trigger";

static inline int check_prefix(const char *str, const char *prefix)
{
	return strlen(str) > strlen(prefix) &&
	       strncmp(str, prefix, strlen(prefix)) == 0;
}

static inline int check_postfix(const char *str, const char *postfix)
{
	return strlen(str) > strlen(postfix) &&
	       strcmp(str + strlen(str) - strlen(postfix), postfix) == 0;
}

static int dump_channels(const char *dev_dir_name)
{
	DIR *dp;
	const struct dirent *ent;

	dp = opendir(dev_dir_name);
	if (!dp)
		return -errno;

	while (ent = readdir(dp), ent)
		if (check_prefix(ent->d_name, "in_") &&
		   (check_postfix(ent->d_name, "_raw") ||
		    check_postfix(ent->d_name, "_input")))
			printf("   %-10s\n", ent->d_name);

	return (closedir(dp) == -1) ? -errno : 0;
}

static int dump_one_device(const char *dev_dir_name)
{
	char name[IIO_MAX_NAME_LENGTH];
	int dev_idx;
	int ret;

	ret = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_device), "%i",
		     &dev_idx);
	if (ret != 1)
		return -EINVAL;

	ret = read_sysfs_string("name", dev_dir_name, name);
	if (ret < 0)
		return ret;

	printf("Device %03d: %s\n", dev_idx, name);

	if (verblevel >= VERBLEVEL_SENSORS)
		return dump_channels(dev_dir_name);

	return 0;
}

static int dump_one_trigger(const char *dev_dir_name)
{
	char name[IIO_MAX_NAME_LENGTH];
	int dev_idx;
	int ret;

	ret = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_trigger),
		     "%i", &dev_idx);
	if (ret != 1)
		return -EINVAL;

	ret = read_sysfs_string("name", dev_dir_name, name);
	if (ret < 0)
		return ret;

	printf("Trigger %03d: %s\n", dev_idx, name);

	return 0;
}

static int dump_devices(void)
{
	const struct dirent *ent;
	int ret;
	DIR *dp;

	dp = opendir(iio_dir);
	if (!dp) {
		fprintf(stderr, "No industrial I/O devices available\n");
		return -ENODEV;
	}

	while (ent = readdir(dp), ent) {
		if (check_prefix(ent->d_name, type_device)) {
			char *dev_dir_name;

			if (asprintf(&dev_dir_name, "%s%s", iio_dir,
				     ent->d_name) < 0) {
				ret = -ENOMEM;
				goto error_close_dir;
			}

			ret = dump_one_device(dev_dir_name);
			if (ret) {
				free(dev_dir_name);
				goto error_close_dir;
			}

			free(dev_dir_name);
			if (verblevel >= VERBLEVEL_SENSORS)
				printf("\n");
		}
	}
	rewinddir(dp);
	while (ent = readdir(dp), ent) {
		if (check_prefix(ent->d_name, type_trigger)) {
			char *dev_dir_name;

			if (asprintf(&dev_dir_name, "%s%s", iio_dir,
				     ent->d_name) < 0) {
				ret = -ENOMEM;
				goto error_close_dir;
			}

			ret = dump_one_trigger(dev_dir_name);
			if (ret) {
				free(dev_dir_name);
				goto error_close_dir;
			}

			free(dev_dir_name);
		}
	}

	return (closedir(dp) == -1) ? -errno : 0;

error_close_dir:
	if (closedir(dp) == -1)
		perror("dump_devices(): Failed to close directory");

	return ret;
}

int main(int argc, char **argv)
{
	int c, err = 0;

	while ((c = getopt(argc, argv, "v")) != EOF) {
		switch (c) {
		case 'v':
			verblevel++;
			break;

		case '?':
		default:
			err++;
			break;
		}
	}
	if (err || argc > optind) {
		fprintf(stderr, "Usage: lsiio [options]...\n"
			"List industrial I/O devices\n"
			"  -v  Increase verbosity (may be given multiple times)\n");
		exit(1);
	}

	return dump_devices();
}
r-highlight'><td/><td colspan='5' class='logmsg'>
Add new transport flag to allow sockets to confirm neighbour.
When same struct dst_entry can be used for many different
neighbours we can not use it for pending confirmations.
The flag is propagated from transport to every packet.
It is reset when cached dst is reset.

Reported-by: YueHaibing &lt;yuehaibing@huawei.com&gt;
Fixes: 5110effee8fd ("net: Do delayed neigh confirmation.")
Fixes: f2bb4bedf35d ("ipv4: Cache output routes in fib_info nexthops.")
Signed-off-by: Julian Anastasov &lt;ja@ssi.bg&gt;
Acked-by: Eric Dumazet &lt;edumazet@google.com&gt;
Acked-by: Neil Horman &lt;nhorman@tuxdriver.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>