auto
  *   €l–Ь4э( ©і( 	ЕЂfаB¦-яЖѓBп_†I|ҐЏ+БЙ E    /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/*
 * Copyright (c) 2010 Intel Corporation.  All rights reserved.
 */

#ifndef _RDMA_IB_H
#define _RDMA_IB_H

#include <linux/types.h>
#include <linux/sched.h>
#include <linux/cred.h>
#include <linux/uaccess.h>
#include <linux/fs.h>

struct ib_addr {
	union {
		__u8		uib_addr8[16];
		__be16		uib_addr16[8];
		__be32		uib_addr32[4];
		__be64		uib_addr64[2];
	} ib_u;
#define sib_addr8		ib_u.uib_addr8
#define sib_addr16		ib_u.uib_addr16
#define sib_addr32		ib_u.uib_addr32
#define sib_addr64		ib_u.uib_addr64
#define sib_raw			ib_u.uib_addr8
#define sib_subnet_prefix	ib_u.uib_addr64[0]
#define sib_interface_id	ib_u.uib_addr64[1]
};

static inline bool ib_addr_any(const struct ib_addr *a)
{
	return ((a->sib_addr64[0] | a->sib_addr64[1]) == 0);
}

static inline bool ib_addr_loopback(const struct ib_addr *a)
{
	return ((a->sib_addr32[0] | a->sib_addr32[1] |
		 a->sib_addr32[2] | (a->sib_addr32[3] ^ htonl(1))) == 0);
}

static inline void ib_addr_set(struct ib_addr *addr,
			       __be32 w1, __be32 w2, __be32 w3, __be32 w4)
{
	addr->sib_addr32[0] = w1;
	addr->sib_addr32[1] = w2;
	addr->sib_addr32[2] = w3;
	addr->sib_addr32[3] = w4;
}

static inline int ib_addr_cmp(const struct ib_addr *a1, const struct ib_addr *a2)
{
	return memcmp(a1, a2, sizeof(struct ib_addr));
}

struct sockaddr_ib {
	unsigned short int	sib_family;	/* AF_IB */
	__be16			sib_pkey;
	__be32			sib_flowinfo;
	struct ib_addr		sib_addr;
	__be64			sib_sid;
	__be64			sib_sid_mask;
	__u64			sib_scope_id;
};

/*
 * The IB interfaces that use write() as bi-directional ioctl() are
 * fundamentally unsafe, since there are lots of ways to trigger "write()"
 * calls from various contexts with elevated privileges. That includes the
 * traditional suid executable error message writes, but also various kernel
 * interfaces that can write to file descriptors.
 *
 * This function provides protection for the legacy API by restricting the
 * calling context.
 */
static inline bool ib_safe_file_access(struct file *filp)
{
	return filp->f_cred == current_cred();
}

#endif /* _RDMA_IB_H */
  	   €ИЗ0БЙ  "   €l–Ь4э( ©і( 	ЕЂfаD¦-яИѓп=ВК Д    # SPDX-License-Identifier: GPL-2.0-only
#
# Building a vDSO image for AArch64.
#
# Author: Will Deacon <will.deacon@arm.com>
# Heavily based on the vDSO Makefiles for other archs.
#

obj-vdso := note.o datapage.o sigreturn.o gettimeofday.o

# Build rules
targets := $(obj-vdso) vdso.so vdso.so.dbg
obj-vdso := $(addprefix $(obj)/, $(obj-vdso))

ccflags-y := -shared -fno-common -fno-builtin -nostdlib -fPIC -Wl,-shared -g \
	-Wl,-soname=linux-vdso.so.1 -Wl,--hash-style=sysv

# Disable gcov profiling for VDSO code
GCOV_PROFILE := n


obj-y += vdso.o
targets += vdso.lds
CPPFLAGS_vdso.lds += -P -C -U$(ARCH)

# Force dependency
$(obj)/vdso.o : $(obj)/vdso.so

# Link rule for the .so file, .lds has to be first
$(obj)/vdso.so.dbg: $(obj)/vdso.lds $(obj-vdso) FORCE
	$(call if_changed,vdsold)


# Strip rule for the .so file
$(obj)/%.so: OBJCOPYFLAGS := -S
$(obj)/%.so: $(obj)/%.so.dbg FORCE
	$(call if_changed,objcopy)

# Generate VDSO offsets using helper script
gen-vdsosym := $(src)/gen_vdso_offsets.sh
quiet_cmd_vdsosym = VDSOSYM $@
      cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@

include/generated/vdso-offsets.h: $(obj)/vdso.so.dbg FORCE
	$(call if_changed,vdsosym)


# Assembly rules for the .S files

sigreturn.o : sigreturn.S
	$(call if_changed_dep,vdsoas)

note.o : note.S
	$(call if_changed_dep,vdsoas)

datapage.o : datapage.S
	$(call if_changed_dep,vdsoas)

gettimeofday.o : gettimeofday.c FORCE
	$(call if_changed_dep,vdsocc)

# Actual build commands
quiet_cmd_vdsold = VDSOL   $@
      cmd_vdsold = $(CC) $(c_flags) -Wl,-n -Wl,-T $(real-prereqs) -o $@
quiet_cmd_vdsoas = VDSOA   $@
      cmd_vdsoas = $(CC) $(a_flags) -c -o $@ $<
quiet_cmd_vdsocc = VDSOA   $@
      cmd_vdsocc = $(CC) $(c_flags) -c -o $@ $<

# Install commands for the unstripped file
quiet_cmd_vdso_install = INSTALL $@
      cmd_vdso_insta