diff options
Diffstat (limited to 'nuttx/binfmt/libelf/libelf_read.c')
| -rw-r--r-- | nuttx/binfmt/libelf/libelf_read.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/nuttx/binfmt/libelf/libelf_read.c b/nuttx/binfmt/libelf/libelf_read.c deleted file mode 100644 index 25ee7ba29..000000000 --- a/nuttx/binfmt/libelf/libelf_read.c +++ /dev/null @@ -1,165 +0,0 @@ -/**************************************************************************** - * binfmt/libelf/libelf_read.c - * - * Copyright (C) 2012 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. 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. - * 3. Neither the name NuttX 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. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#include <sys/types.h> -#include <stdint.h> -#include <unistd.h> -#include <string.h> -#include <elf32.h> -#include <debug.h> -#include <errno.h> - -#include <nuttx/binfmt/elf.h> - -/**************************************************************************** - * Pre-Processor Definitions - ****************************************************************************/ - -#undef ELF_DUMP_READDATA /* Define to dump all file data read */ -#define DUMPER syslog /* If ELF_DUMP_READDATA is defined, this - * is the API used to dump data */ - -/**************************************************************************** - * Private Constant Data - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: elf_dumpreaddata - ****************************************************************************/ - -#if defined(ELF_DUMP_READDATA) -static inline void elf_dumpreaddata(char *buffer, int buflen) -{ - uint32_t *buf32 = (uint32_t*)buffer; - int i; - int j; - - for (i = 0; i < buflen; i += 32) - { - DUMPER("%04x:", i); - for (j = 0; j < 32; j += sizeof(uint32_t)) - { - DUMPER(" %08x", *buf32++); - } - DUMPER("\n"); - } -} -#else -# define elf_dumpreaddata(b,n) -#endif - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: elf_read - * - * Description: - * Read 'readsize' bytes from the object file at 'offset'. The data is - * read into 'buffer.' If 'buffer' is part of the ELF address environment, - * then the caller is responsibile for assuring that that address - * environment is in place before calling this function (i.e., that - * elf_addrenv_select() has been called if CONFIG_ADDRENV=y). - * - * Returned Value: - * 0 (OK) is returned on success and a negated errno is returned on - * failure. - * - ****************************************************************************/ - -int elf_read(FAR struct elf_loadinfo_s *loadinfo, FAR uint8_t *buffer, - size_t readsize, off_t offset) -{ - ssize_t nbytes; /* Number of bytes read */ - off_t rpos; /* Position returned by lseek */ - - bvdbg("Read %ld bytes from offset %ld\n", (long)readsize, (long)offset); - - /* Loop until all of the requested data has been read. */ - - while (readsize > 0) - { - /* Seek to the next read position */ - - rpos = lseek(loadinfo->filfd, offset, SEEK_SET); - if (rpos != offset) - { - int errval = errno; - bdbg("Failed to seek to position %ld: %d\n", (long)offset, errval); - return -errval; - } - - /* Read the file data at offset into the user buffer */ - - nbytes = read(loadinfo->filfd, buffer, readsize); - if (nbytes < 0) - { - int errval = errno; - - /* EINTR just means that we received a signal */ - - if (errval != EINTR) - { - bdbg("Read of .data failed: %d\n", errval); - return -errval; - } - } - else if (nbytes == 0) - { - bdbg("Unexpected end of file\n"); - return -ENODATA; - } - else - { - readsize -= nbytes; - buffer += nbytes; - offset += nbytes; - } - } - - elf_dumpreaddata(buffer, readsize); - return OK; -} |