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usr / src / contrib / ofed / libibverbs /

📁 ..
📄 alloca.h(359 B)
📄 arch.h(1.9 KB)
📄 cmd.c(60.7 KB)
📄 compat-1_0.c(26.36 KB)
📄 config.h(998 B)
📄 device.c(9.99 KB)
📄 driver.h(11.89 KB)
📄 enum_strs.c(4.89 KB)
📁 examples
📄 ibverbs.h(4.18 KB)
📄 init.c(9.39 KB)
📄 kern-abi.h(25.17 KB)
📄 libibverbs.map(3.11 KB)
📁 man
📄 marshall.c(4.79 KB)
📄 marshall.h(2.19 KB)
📄 memory.c(14.17 KB)
📄 neigh.c(19.13 KB)
📄 neigh.h(1.43 KB)
📄 nl1_compat.h(1.78 KB)
📄 opcode.h(5.56 KB)
📄 sa-kern-abi.h(1.58 KB)
📄 sa.h(3.98 KB)
📄 sysfs.c(2.59 KB)
📄 verbs.c(26.15 KB)
📄 verbs.h(61.88 KB)

Editing: sysfs.c

/*
 * Copyright (c) 2006 Cisco Systems, Inc.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
#define _GNU_SOURCE
#include <config.h>

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <sys/sysctl.h>

#include "ibverbs.h"

static const char *sysfs_path;

const char *ibv_get_sysfs_path(void)
{
	const char *env = NULL;

if (sysfs_path)
		return sysfs_path;

/*
	 * Only follow use path passed in through the calling user's
	 * environment if we're not running SUID.
	 */
	if (getuid() == geteuid())
		env = getenv("SYSFS_PATH");

if (env) {
		int len;
		char *dup;

sysfs_path = dup = strndup(env, IBV_SYSFS_PATH_MAX);
		len = strlen(dup);
		while (len > 0 && dup[len - 1] == '/') {
			--len;
			dup[len] = '\0';
		}
	} else
		sysfs_path = "/sys";

return sysfs_path;
}

int ibv_read_sysfs_file(const char *dir, const char *file,
			char *buf, size_t size)
{
	char *path, *s;
	int ret;
	size_t len;

if (asprintf(&path, "%s/%s", dir, file) < 0)
		return -1;

for (s = &path[0]; *s != '\0'; s++)
		if (*s == '/')
			*s = '.';

len = size;
	ret = sysctlbyname(&path[1], buf, &len, NULL, 0);
	free(path);

if (ret == -1)
		return -1;

if (len > 0 && buf[len - 1] == '\n')
		buf[--len] = '\0';

return len;
}

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Editing: sysfs.c

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