/* Low-level I/O routines for BFDs.
- Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+
+ Copyright (C) 1990-2020 Free Software Foundation, Inc.
+
Written by Cygnus Support.
-This file is part of BFD, the Binary File Descriptor library.
+ This file is part of BFD, the Binary File Descriptor library.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
#include "sysdep.h"
-
+#include <limits.h>
#include "bfd.h"
#include "libbfd.h"
-#include <limits.h>
-
#ifndef S_IXUSR
#define S_IXUSR 0100 /* Execute by owner. */
#endif
#define S_IXOTH 0001 /* Execute by others. */
#endif
-/* Note that archive entries don't have streams; they share their parent's.
- This allows someone to play with the iostream behind BFD's back.
+#ifndef FD_CLOEXEC
+#define FD_CLOEXEC 1
+#endif
- Also, note that the origin pointer points to the beginning of a file's
- contents (0 for non-archive elements). For archive entries this is the
- first octet in the file, NOT the beginning of the archive header. */
+file_ptr
+_bfd_real_ftell (FILE *file)
+{
+#if defined (HAVE_FTELLO64)
+ return ftello64 (file);
+#elif defined (HAVE_FTELLO)
+ return ftello (file);
+#else
+ return ftell (file);
+#endif
+}
-static size_t
-real_read (void *where, size_t a, size_t b, FILE *file)
+int
+_bfd_real_fseek (FILE *file, file_ptr offset, int whence)
{
- /* FIXME - this looks like an optimization, but it's really to cover
- up for a feature of some OSs (not solaris - sigh) that
- ld/pe-dll.c takes advantage of (apparently) when it creates BFDs
- internally and tries to link against them. BFD seems to be smart
- enough to realize there are no symbol records in the "file" that
- doesn't exist but attempts to read them anyway. On Solaris,
- attempting to read zero bytes from a NULL file results in a core
- dump, but on other platforms it just returns zero bytes read.
- This makes it to something reasonable. - DJ */
- if (a == 0 || b == 0)
- return 0;
+#if defined (HAVE_FSEEKO64)
+ return fseeko64 (file, offset, whence);
+#elif defined (HAVE_FSEEKO)
+ return fseeko (file, offset, whence);
+#else
+ return fseek (file, offset, whence);
+#endif
+}
+/* Mark FILE as close-on-exec. Return FILE. FILE may be NULL, in
+ which case nothing is done. */
+static FILE *
+close_on_exec (FILE *file)
+{
+#if defined (HAVE_FILENO) && defined (F_GETFD)
+ if (file)
+ {
+ int fd = fileno (file);
+ int old = fcntl (fd, F_GETFD, 0);
+ if (old >= 0)
+ fcntl (fd, F_SETFD, old | FD_CLOEXEC);
+ }
+#endif
+ return file;
+}
-#if defined (__VAX) && defined (VMS)
- /* Apparently fread on Vax VMS does not keep the record length
- information. */
- return read (fileno (file), where, a * b);
+FILE *
+_bfd_real_fopen (const char *filename, const char *modes)
+{
+#ifdef VMS
+ char *vms_attr;
+
+ /* On VMS, fopen allows file attributes as optional arguments.
+ We need to use them but we'd better to use the common prototype.
+ In fopen-vms.h, they are separated from the mode with a comma.
+ Split here. */
+ vms_attr = strchr (modes, ',');
+ if (vms_attr == NULL)
+ {
+ /* No attributes. */
+ return close_on_exec (fopen (filename, modes));
+ }
+ else
+ {
+ /* Attributes found. Split. */
+ size_t modes_len = strlen (modes) + 1;
+ char attrs[modes_len + 1];
+ char *at[3];
+ int i;
+
+ memcpy (attrs, modes, modes_len);
+ at[0] = attrs;
+ for (i = 0; i < 2; i++)
+ {
+ at[i + 1] = strchr (at[i], ',');
+ BFD_ASSERT (at[i + 1] != NULL);
+ *(at[i + 1]++) = 0; /* Replace ',' with a nul, and skip it. */
+ }
+ return close_on_exec (fopen (filename, at[0], at[1], at[2]));
+ }
+#else /* !VMS */
+#if defined (HAVE_FOPEN64)
+ return close_on_exec (fopen64 (filename, modes));
#else
- return fread (where, a, b, file);
+ return close_on_exec (fopen (filename, modes));
#endif
+#endif /* !VMS */
}
+/*
+INTERNAL_DEFINITION
+ struct bfd_iovec
+
+DESCRIPTION
+
+ The <<struct bfd_iovec>> contains the internal file I/O class.
+ Each <<BFD>> has an instance of this class and all file I/O is
+ routed through it (it is assumed that the instance implements
+ all methods listed below).
+
+.struct bfd_iovec
+.{
+. {* To avoid problems with macros, a "b" rather than "f"
+. prefix is prepended to each method name. *}
+. {* Attempt to read/write NBYTES on ABFD's IOSTREAM storing/fetching
+. bytes starting at PTR. Return the number of bytes actually
+. transfered (a read past end-of-file returns less than NBYTES),
+. or -1 (setting <<bfd_error>>) if an error occurs. *}
+. file_ptr (*bread) (struct bfd *abfd, void *ptr, file_ptr nbytes);
+. file_ptr (*bwrite) (struct bfd *abfd, const void *ptr,
+. file_ptr nbytes);
+. {* Return the current IOSTREAM file offset, or -1 (setting <<bfd_error>>
+. if an error occurs. *}
+. file_ptr (*btell) (struct bfd *abfd);
+. {* For the following, on successful completion a value of 0 is returned.
+. Otherwise, a value of -1 is returned (and <<bfd_error>> is set). *}
+. int (*bseek) (struct bfd *abfd, file_ptr offset, int whence);
+. int (*bclose) (struct bfd *abfd);
+. int (*bflush) (struct bfd *abfd);
+. int (*bstat) (struct bfd *abfd, struct stat *sb);
+. {* Mmap a part of the files. ADDR, LEN, PROT, FLAGS and OFFSET are the usual
+. mmap parameter, except that LEN and OFFSET do not need to be page
+. aligned. Returns (void *)-1 on failure, mmapped address on success.
+. Also write in MAP_ADDR the address of the page aligned buffer and in
+. MAP_LEN the size mapped (a page multiple). Use unmap with MAP_ADDR and
+. MAP_LEN to unmap. *}
+. void *(*bmmap) (struct bfd *abfd, void *addr, bfd_size_type len,
+. int prot, int flags, file_ptr offset,
+. void **map_addr, bfd_size_type *map_len);
+.};
+
+.extern const struct bfd_iovec _bfd_memory_iovec;
+
+*/
+
+
/* Return value is amount read. */
bfd_size_type
bfd_bread (void *ptr, bfd_size_type size, bfd *abfd)
{
- size_t nread;
+ file_ptr nread;
+ bfd *element_bfd = abfd;
+ ufile_ptr offset = 0;
- if ((abfd->flags & BFD_IN_MEMORY) != 0)
+ while (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive))
{
- struct bfd_in_memory *bim;
- bfd_size_type get;
+ offset += abfd->origin;
+ abfd = abfd->my_archive;
+ }
- bim = abfd->iostream;
- get = size;
- if (abfd->where + get > bim->size)
+ /* If this is an archive element, don't read past the end of
+ this element. */
+ if (element_bfd->arelt_data != NULL)
+ {
+ bfd_size_type maxbytes = arelt_size (element_bfd);
+
+ if (abfd->where < offset || abfd->where - offset >= maxbytes)
{
- if (bim->size < (bfd_size_type) abfd->where)
- get = 0;
- else
- get = bim->size - abfd->where;
- bfd_set_error (bfd_error_file_truncated);
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
}
- memcpy (ptr, bim->buffer + abfd->where, (size_t) get);
- abfd->where += get;
- return get;
+ if (abfd->where - offset + size > maxbytes)
+ size = maxbytes - (abfd->where - offset);
}
- nread = real_read (ptr, 1, (size_t) size, bfd_cache_lookup (abfd));
- if (nread != (size_t) -1)
- abfd->where += nread;
-
- /* Set bfd_error if we did not read as much data as we expected.
-
- If the read failed due to an error set the bfd_error_system_call,
- else set bfd_error_file_truncated.
-
- A BFD backend may wish to override bfd_error_file_truncated to
- provide something more useful (eg. no_symbols or wrong_format). */
- if (nread != size)
+ if (abfd->iovec == NULL)
{
- if (ferror (bfd_cache_lookup (abfd)))
- bfd_set_error (bfd_error_system_call);
- else
- bfd_set_error (bfd_error_file_truncated);
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
}
+ nread = abfd->iovec->bread (abfd, ptr, size);
+ if (nread != -1)
+ abfd->where += nread;
+
return nread;
}
bfd_size_type
bfd_bwrite (const void *ptr, bfd_size_type size, bfd *abfd)
{
- size_t nwrote;
+ file_ptr nwrote;
- if ((abfd->flags & BFD_IN_MEMORY) != 0)
- {
- struct bfd_in_memory *bim = abfd->iostream;
- size = (size_t) size;
- if (abfd->where + size > bim->size)
- {
- bfd_size_type newsize, oldsize;
+ while (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive))
+ abfd = abfd->my_archive;
- oldsize = (bim->size + 127) & ~(bfd_size_type) 127;
- bim->size = abfd->where + size;
- /* Round up to cut down on memory fragmentation */
- newsize = (bim->size + 127) & ~(bfd_size_type) 127;
- if (newsize > oldsize)
- {
- bim->buffer = bfd_realloc (bim->buffer, newsize);
- if (bim->buffer == 0)
- {
- bim->size = 0;
- return 0;
- }
- }
- }
- memcpy (bim->buffer + abfd->where, ptr, (size_t) size);
- abfd->where += size;
- return size;
+ if (abfd->iovec == NULL)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
}
- nwrote = fwrite (ptr, 1, (size_t) size, bfd_cache_lookup (abfd));
- if (nwrote != (size_t) -1)
+ nwrote = abfd->iovec->bwrite (abfd, ptr, size);
+ if (nwrote != -1)
abfd->where += nwrote;
- if (nwrote != size)
+ if ((bfd_size_type) nwrote != size)
{
#ifdef ENOSPC
errno = ENOSPC;
return nwrote;
}
-bfd_vma
+file_ptr
bfd_tell (bfd *abfd)
{
+ ufile_ptr offset = 0;
file_ptr ptr;
- if ((abfd->flags & BFD_IN_MEMORY) != 0)
- return abfd->where;
+ while (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive))
+ {
+ offset += abfd->origin;
+ abfd = abfd->my_archive;
+ }
- ptr = ftell (bfd_cache_lookup (abfd));
+ if (abfd->iovec == NULL)
+ return 0;
- if (abfd->my_archive)
- ptr -= abfd->origin;
+ ptr = abfd->iovec->btell (abfd);
abfd->where = ptr;
- return ptr;
+ return ptr - offset;
}
int
bfd_flush (bfd *abfd)
{
- if ((abfd->flags & BFD_IN_MEMORY) != 0)
+ while (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive))
+ abfd = abfd->my_archive;
+
+ if (abfd->iovec == NULL)
return 0;
- return fflush (bfd_cache_lookup(abfd));
+
+ return abfd->iovec->bflush (abfd);
}
/* Returns 0 for success, negative value for failure (in which case
int
bfd_stat (bfd *abfd, struct stat *statbuf)
{
- FILE *f;
int result;
- if ((abfd->flags & BFD_IN_MEMORY) != 0)
- abort ();
+ while (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive))
+ abfd = abfd->my_archive;
- f = bfd_cache_lookup (abfd);
- if (f == NULL)
+ if (abfd->iovec == NULL)
{
- bfd_set_error (bfd_error_system_call);
+ bfd_set_error (bfd_error_invalid_operation);
return -1;
}
- result = fstat (fileno (f), statbuf);
+
+ result = abfd->iovec->bstat (abfd, statbuf);
if (result < 0)
bfd_set_error (bfd_error_system_call);
return result;
bfd_seek (bfd *abfd, file_ptr position, int direction)
{
int result;
- FILE *f;
- long file_position;
- /* For the time being, a BFD may not seek to it's end. The problem
- is that we don't easily have a way to recognize the end of an
- element in an archive. */
-
- BFD_ASSERT (direction == SEEK_SET || direction == SEEK_CUR);
+ ufile_ptr offset = 0;
- if (direction == SEEK_CUR && position == 0)
- return 0;
-
- if ((abfd->flags & BFD_IN_MEMORY) != 0)
+ while (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive))
{
- struct bfd_in_memory *bim;
-
- bim = abfd->iostream;
-
- if (direction == SEEK_SET)
- abfd->where = position;
- else
- abfd->where += position;
-
- if (abfd->where > bim->size)
- {
- if ((abfd->direction == write_direction) ||
- (abfd->direction == both_direction))
- {
- bfd_size_type newsize, oldsize;
- oldsize = (bim->size + 127) & ~(bfd_size_type) 127;
- bim->size = abfd->where;
- /* Round up to cut down on memory fragmentation */
- newsize = (bim->size + 127) & ~(bfd_size_type) 127;
- if (newsize > oldsize)
- {
- bim->buffer = bfd_realloc (bim->buffer, newsize);
- if (bim->buffer == 0)
- {
- bim->size = 0;
- return -1;
- }
- }
- }
- else
- {
- abfd->where = bim->size;
- bfd_set_error (bfd_error_file_truncated);
- return -1;
- }
- }
- return 0;
+ offset += abfd->origin;
+ abfd = abfd->my_archive;
}
- if (abfd->format != bfd_archive && abfd->my_archive == 0)
+ if (abfd->iovec == NULL)
{
-#if 0
- /* Explanation for this code: I'm only about 95+% sure that the above
- conditions are sufficient and that all i/o calls are properly
- adjusting the `where' field. So this is sort of an `assert'
- that the `where' field is correct. If we can go a while without
- tripping the abort, we can probably safely disable this code,
- so that the real optimizations happen. */
- file_ptr where_am_i_now;
- where_am_i_now = ftell (bfd_cache_lookup (abfd));
- if (abfd->my_archive)
- where_am_i_now -= abfd->origin;
- if (where_am_i_now != abfd->where)
- abort ();
-#endif
- if (direction == SEEK_SET && (bfd_vma) position == abfd->where)
- return 0;
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
}
- else
- {
- /* We need something smarter to optimize access to archives.
- Currently, anything inside an archive is read via the file
- handle for the archive. Which means that a bfd_seek on one
- component affects the `current position' in the archive, as
- well as in any other component.
- It might be sufficient to put a spike through the cache
- abstraction, and look to the archive for the file position,
- but I think we should try for something cleaner.
+ /* For the time being, a BFD may not seek to it's end. The problem
+ is that we don't easily have a way to recognize the end of an
+ element in an archive. */
+ BFD_ASSERT (direction == SEEK_SET || direction == SEEK_CUR);
- In the meantime, no optimization for archives. */
- }
+ if (direction != SEEK_CUR)
+ position += offset;
- f = bfd_cache_lookup (abfd);
- file_position = position;
- if (direction == SEEK_SET && abfd->my_archive != NULL)
- file_position += abfd->origin;
+ if ((direction == SEEK_CUR && position == 0)
+ || (direction == SEEK_SET && (ufile_ptr) position == abfd->where))
+ return 0;
- result = fseek (f, file_position, direction);
+ result = abfd->iovec->bseek (abfd, position, direction);
if (result != 0)
{
- int hold_errno = errno;
-
- /* Force redetermination of `where' field. */
- bfd_tell (abfd);
-
/* An EINVAL error probably means that the file offset was
- absurd. */
- if (hold_errno == EINVAL)
+ absurd. */
+ if (errno == EINVAL)
bfd_set_error (bfd_error_file_truncated);
else
- {
- bfd_set_error (bfd_error_system_call);
- errno = hold_errno;
- }
+ bfd_set_error (bfd_error_system_call);
}
else
{
/* Adjust `where' field. */
- if (direction == SEEK_SET)
- abfd->where = position;
- else
+ if (direction == SEEK_CUR)
abfd->where += position;
+ else
+ abfd->where = position;
}
+
return result;
}
long
bfd_get_mtime (bfd *abfd)
{
- FILE *fp;
struct stat buf;
if (abfd->mtime_set)
return abfd->mtime;
- fp = bfd_cache_lookup (abfd);
- if (0 != fstat (fileno (fp), &buf))
+ if (bfd_stat (abfd, &buf) != 0)
return 0;
abfd->mtime = buf.st_mtime; /* Save value in case anyone wants it */
bfd_get_size
SYNOPSIS
- long bfd_get_size (bfd *abfd);
+ ufile_ptr bfd_get_size (bfd *abfd);
DESCRIPTION
Return the file size (as read from file system) for the file
error when it tries to read the table, or a "virtual memory
exhausted" error when it tries to allocate 15 bazillon bytes
of space for the 15 bazillon byte table it is about to read.
- This function at least allows us to answer the quesion, "is the
+ This function at least allows us to answer the question, "is the
size reasonable?".
*/
-long
+ufile_ptr
bfd_get_size (bfd *abfd)
{
- FILE *fp;
struct stat buf;
- if ((abfd->flags & BFD_IN_MEMORY) != 0)
- return ((struct bfd_in_memory *) abfd->iostream)->size;
-
- fp = bfd_cache_lookup (abfd);
- if (0 != fstat (fileno (fp), & buf))
+ if (bfd_stat (abfd, &buf) != 0)
return 0;
return buf.st_size;
}
+
+/*
+FUNCTION
+ bfd_get_file_size
+
+SYNOPSIS
+ ufile_ptr bfd_get_file_size (bfd *abfd);
+
+DESCRIPTION
+ Return the file size (as read from file system) for the file
+ associated with BFD @var{abfd}. It supports both normal files
+ and archive elements.
+
+*/
+
+ufile_ptr
+bfd_get_file_size (bfd *abfd)
+{
+ if (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive))
+ return arelt_size (abfd);
+
+ return bfd_get_size (abfd);
+}
+
+/*
+FUNCTION
+ bfd_mmap
+
+SYNOPSIS
+ void *bfd_mmap (bfd *abfd, void *addr, bfd_size_type len,
+ int prot, int flags, file_ptr offset,
+ void **map_addr, bfd_size_type *map_len);
+
+DESCRIPTION
+ Return mmap()ed region of the file, if possible and implemented.
+ LEN and OFFSET do not need to be page aligned. The page aligned
+ address and length are written to MAP_ADDR and MAP_LEN.
+
+*/
+
+void *
+bfd_mmap (bfd *abfd, void *addr, bfd_size_type len,
+ int prot, int flags, file_ptr offset,
+ void **map_addr, bfd_size_type *map_len)
+{
+ while (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive))
+ {
+ offset += abfd->origin;
+ abfd = abfd->my_archive;
+ }
+
+ if (abfd->iovec == NULL)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return (void *) -1;
+ }
+
+ return abfd->iovec->bmmap (abfd, addr, len, prot, flags, offset,
+ map_addr, map_len);
+}
+
+/* Memory file I/O operations. */
+
+static file_ptr
+memory_bread (bfd *abfd, void *ptr, file_ptr size)
+{
+ struct bfd_in_memory *bim;
+ bfd_size_type get;
+
+ bim = (struct bfd_in_memory *) abfd->iostream;
+ get = size;
+ if (abfd->where + get > bim->size)
+ {
+ if (bim->size < (bfd_size_type) abfd->where)
+ get = 0;
+ else
+ get = bim->size - abfd->where;
+ bfd_set_error (bfd_error_file_truncated);
+ }
+ memcpy (ptr, bim->buffer + abfd->where, (size_t) get);
+ return get;
+}
+
+static file_ptr
+memory_bwrite (bfd *abfd, const void *ptr, file_ptr size)
+{
+ struct bfd_in_memory *bim = (struct bfd_in_memory *) abfd->iostream;
+
+ if (abfd->where + size > bim->size)
+ {
+ bfd_size_type newsize, oldsize;
+
+ oldsize = (bim->size + 127) & ~(bfd_size_type) 127;
+ bim->size = abfd->where + size;
+ /* Round up to cut down on memory fragmentation */
+ newsize = (bim->size + 127) & ~(bfd_size_type) 127;
+ if (newsize > oldsize)
+ {
+ bim->buffer = (bfd_byte *) bfd_realloc_or_free (bim->buffer, newsize);
+ if (bim->buffer == NULL)
+ {
+ bim->size = 0;
+ return 0;
+ }
+ if (newsize > bim->size)
+ memset (bim->buffer + bim->size, 0, newsize - bim->size);
+ }
+ }
+ memcpy (bim->buffer + abfd->where, ptr, (size_t) size);
+ return size;
+}
+
+static file_ptr
+memory_btell (bfd *abfd)
+{
+ return abfd->where;
+}
+
+static int
+memory_bseek (bfd *abfd, file_ptr position, int direction)
+{
+ file_ptr nwhere;
+ struct bfd_in_memory *bim;
+
+ bim = (struct bfd_in_memory *) abfd->iostream;
+
+ if (direction == SEEK_SET)
+ nwhere = position;
+ else
+ nwhere = abfd->where + position;
+
+ if (nwhere < 0)
+ {
+ abfd->where = 0;
+ errno = EINVAL;
+ return -1;
+ }
+
+ if ((bfd_size_type)nwhere > bim->size)
+ {
+ if (abfd->direction == write_direction
+ || abfd->direction == both_direction)
+ {
+ bfd_size_type newsize, oldsize;
+
+ oldsize = (bim->size + 127) & ~(bfd_size_type) 127;
+ bim->size = nwhere;
+ /* Round up to cut down on memory fragmentation */
+ newsize = (bim->size + 127) & ~(bfd_size_type) 127;
+ if (newsize > oldsize)
+ {
+ bim->buffer = (bfd_byte *) bfd_realloc_or_free (bim->buffer, newsize);
+ if (bim->buffer == NULL)
+ {
+ errno = EINVAL;
+ bim->size = 0;
+ return -1;
+ }
+ memset (bim->buffer + oldsize, 0, newsize - oldsize);
+ }
+ }
+ else
+ {
+ abfd->where = bim->size;
+ errno = EINVAL;
+ bfd_set_error (bfd_error_file_truncated);
+ return -1;
+ }
+ }
+ return 0;
+}
+
+static int
+memory_bclose (struct bfd *abfd)
+{
+ struct bfd_in_memory *bim = (struct bfd_in_memory *) abfd->iostream;
+
+ if (bim->buffer != NULL)
+ free (bim->buffer);
+ free (bim);
+ abfd->iostream = NULL;
+
+ return 0;
+}
+
+static int
+memory_bflush (bfd *abfd ATTRIBUTE_UNUSED)
+{
+ return 0;
+}
+
+static int
+memory_bstat (bfd *abfd, struct stat *statbuf)
+{
+ struct bfd_in_memory *bim = (struct bfd_in_memory *) abfd->iostream;
+
+ memset (statbuf, 0, sizeof (*statbuf));
+ statbuf->st_size = bim->size;
+
+ return 0;
+}
+
+static void *
+memory_bmmap (bfd *abfd ATTRIBUTE_UNUSED, void *addr ATTRIBUTE_UNUSED,
+ bfd_size_type len ATTRIBUTE_UNUSED, int prot ATTRIBUTE_UNUSED,
+ int flags ATTRIBUTE_UNUSED, file_ptr offset ATTRIBUTE_UNUSED,
+ void **map_addr ATTRIBUTE_UNUSED,
+ bfd_size_type *map_len ATTRIBUTE_UNUSED)
+{
+ return (void *)-1;
+}
+
+const struct bfd_iovec _bfd_memory_iovec =
+{
+ &memory_bread, &memory_bwrite, &memory_btell, &memory_bseek,
+ &memory_bclose, &memory_bflush, &memory_bstat, &memory_bmmap
+};
projects / deliverable / binutils-gdb.git / blobdiff