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- /*
- * Copyright (C) 2011-2016 Intel Corporation. All rights reserved.
- *
- * 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.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
- #include "se_memory.h"
- #include "se_trace.h"
- #include "util.h"
- void* se_virtual_alloc(void* address, size_t size, uint32_t type)
- {
- UNUSED(type);
- void* pRet = mmap(address, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
- if(MAP_FAILED == pRet)
- return NULL;
- return pRet;
- }
- int se_virtual_free(void* address, size_t size, uint32_t type)
- {
- UNUSED(type);
- return !(munmap(address, size));
- }
- int se_virtual_lock(void* address, size_t size)
- {
- return !mlock(address, size);
- }
- static unsigned int get_prot(uint64_t flags)
- {
- if ((flags & SI_FLAG_PT_MASK) == SI_FLAG_TCS)
- return PROT_READ|PROT_WRITE|PROT_EXEC;
- switch (flags & (SI_FLAG_R | SI_FLAG_W | SI_FLAG_X))
- {
- case SI_FLAG_X: return PROT_EXEC; break;
- case SI_FLAG_R | SI_FLAG_X: return PROT_READ|PROT_EXEC; break;
- case SI_FLAG_R | SI_FLAG_W | SI_FLAG_X: return PROT_READ|PROT_WRITE|PROT_EXEC; break;
- case SI_FLAG_R: return PROT_READ; break;
- case SI_FLAG_R | SI_FLAG_W: return PROT_READ|PROT_WRITE; break;
- /* This covers no access, W and WX */
- default: return PROT_NONE; break;
- }
- }
- int se_virtual_protect(void* address, size_t size, uint32_t prot)
- {
- return !mprotect(address, size, (int)get_prot(prot));
- }
- se_proc_t get_self_proc()
- {
- return getpid();
- }
- int put_self_proc(se_proc_t proc)
- {
- UNUSED(proc);
- return 1;
- }
- int se_read_process_mem(se_proc_t proc, void* base_addr, void* buffer, size_t size, size_t* read_nr)
- {
- char filename[64];
- int fd = -1;
- int ret = FALSE;
- ssize_t len = 0;
- off64_t offset = (off64_t)(size_t) base_addr;
- snprintf (filename, 64, "/proc/%d/mem", (int)proc);
- fd = open(filename, O_RDONLY | O_LARGEFILE);
- if(fd == -1)
- return FALSE;
- if(lseek64(fd, offset, SEEK_SET) == -1)
- {
- goto out;
- }
- if((len = read(fd, buffer, size)) < 0)
- {
- goto out;
- }
- else if(read_nr)
- *read_nr = (size_t)len; /* len is a non-negative number */
- ret = TRUE;
- out:
- close (fd);
- return ret;
- }
- int se_write_process_mem(se_proc_t proc, void* base_addr, void* buffer, size_t size, size_t* write_nr)
- {
- char filename[64];
- int fd = -1;
- int ret = FALSE;
- ssize_t len = 0;
- off64_t offset = (off64_t)(size_t)base_addr;
- snprintf (filename, 64, "/proc/%d/mem", (int)proc);
- fd = open(filename, O_RDWR | O_LARGEFILE);
- if(fd == -1)
- return FALSE;
- if(lseek64(fd, offset, SEEK_SET) == -1)
- {
- goto out;
- }
- if((len = write(fd, buffer, size)) < 0)
- {
- goto out;
- }
- else if(write_nr)
- *write_nr = (size_t)len; /* len is a non-negative number */
- ret = TRUE;
- out:
- close (fd);
- return ret;
- }
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