/* Low-level I/O routines for BFDs.
- Copyright (C) 1990-2016 Free Software Foundation, Inc.
+ Copyright (C) 1990-2019 Free Software Foundation, Inc.
Written by Cygnus Support.
#endif
file_ptr
-real_ftell (FILE *file)
+_bfd_real_ftell (FILE *file)
{
#if defined (HAVE_FTELLO64)
return ftello64 (file);
}
int
-real_fseek (FILE *file, file_ptr offset, int whence)
+_bfd_real_fseek (FILE *file, file_ptr offset, int whence)
{
#if defined (HAVE_FSEEKO64)
return fseeko64 (file, offset, whence);
}
FILE *
-real_fopen (const char *filename, const char *modes)
+_bfd_real_fopen (const char *filename, const char *modes)
{
#ifdef VMS
char *vms_attr;
. 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);
+. 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). *}
+. 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);
. 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);
+. int prot, int flags, file_ptr offset,
+. void **map_addr, bfd_size_type *map_len);
.};
.extern const struct bfd_iovec _bfd_memory_iovec;
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;
+
+ while (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive))
+ {
+ offset += abfd->origin;
+ abfd = abfd->my_archive;
+ }
/* If this is an archive element, don't read past the end of
this element. */
- if (abfd->arelt_data != NULL)
+ if (element_bfd->arelt_data != NULL)
{
- bfd_size_type maxbytes = arelt_size (abfd);
-
- if (abfd->where + size > maxbytes)
- {
- if (abfd->where >= maxbytes)
- return 0;
- size = maxbytes - abfd->where;
- }
+ bfd_size_type maxbytes = arelt_size (element_bfd);
+
+ if (abfd->where < offset || abfd->where - offset >= maxbytes)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
+ if (abfd->where - offset + size > maxbytes)
+ size = maxbytes - (abfd->where - offset);
}
- if (abfd->iovec)
- nread = abfd->iovec->bread (abfd, ptr, size);
- else
- nread = 0;
- if (nread != (size_t) -1)
+ if (abfd->iovec == NULL)
+ {
+ 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->iovec)
- nwrote = abfd->iovec->bwrite (abfd, ptr, size);
- else
- nwrote = 0;
+ while (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive))
+ abfd = abfd->my_archive;
- if (nwrote != (size_t) -1)
+ if (abfd->iovec == NULL)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -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;
file_ptr
bfd_tell (bfd *abfd)
{
+ ufile_ptr offset = 0;
file_ptr ptr;
- if (abfd->iovec)
+ while (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive))
{
- bfd *parent_bfd = abfd;
- ptr = abfd->iovec->btell (abfd);
-
- while (parent_bfd->my_archive != NULL
- && !bfd_is_thin_archive (parent_bfd->my_archive))
- {
- ptr -= parent_bfd->origin;
- parent_bfd = parent_bfd->my_archive;
- }
+ offset += abfd->origin;
+ abfd = abfd->my_archive;
}
- else
- ptr = 0;
+ if (abfd->iovec == NULL)
+ return 0;
+
+ ptr = abfd->iovec->btell (abfd);
abfd->where = ptr;
- return ptr;
+ return ptr - offset;
}
int
bfd_flush (bfd *abfd)
{
- if (abfd->iovec)
- return abfd->iovec->bflush (abfd);
- return 0;
+ while (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive))
+ abfd = abfd->my_archive;
+
+ if (abfd->iovec == NULL)
+ return 0;
+
+ return abfd->iovec->bflush (abfd);
}
/* Returns 0 for success, negative value for failure (in which case
{
int result;
- if (abfd->iovec)
- result = abfd->iovec->bstat (abfd, statbuf);
- else
- result = -1;
+ while (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive))
+ abfd = abfd->my_archive;
+ if (abfd->iovec == NULL)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
+
+ 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_ptr 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);
-
- if (direction == SEEK_CUR && position == 0)
- return 0;
+ ufile_ptr offset = 0;
- if (abfd->my_archive == NULL || bfd_is_thin_archive (abfd->my_archive))
+ while (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive))
{
- if (direction == SEEK_SET && (bfd_vma) position == abfd->where)
- return 0;
+ offset += abfd->origin;
+ abfd = abfd->my_archive;
}
- 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.
- In the meantime, no optimization for archives. */
- }
-
- file_position = position;
- if (direction == SEEK_SET)
+ if (abfd->iovec == NULL)
{
- bfd *parent_bfd = abfd;
-
- while (parent_bfd->my_archive != NULL
- && !bfd_is_thin_archive (parent_bfd->my_archive))
- {
- file_position += parent_bfd->origin;
- parent_bfd = parent_bfd->my_archive;
- }
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
}
- if (abfd->iovec)
- result = abfd->iovec->bseek (abfd, file_position, direction);
- else
- result = -1;
+ /* 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);
- if (result != 0)
- {
- int hold_errno = errno;
+ if (direction != SEEK_CUR)
+ position += offset;
- /* Force redetermination of `where' field. */
- bfd_tell (abfd);
+ if ((direction == SEEK_CUR && position == 0)
+ || (direction == SEEK_SET && (ufile_ptr) position == abfd->where))
+ return 0;
+ result = abfd->iovec->bseek (abfd, position, direction);
+ if (result != 0)
+ {
/* 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;
}
if (abfd->mtime_set)
return abfd->mtime;
- if (abfd->iovec == NULL)
- return 0;
-
- if (abfd->iovec->bstat (abfd, &buf) != 0)
+ if (bfd_stat (abfd, &buf) != 0)
return 0;
abfd->mtime = buf.st_mtime; /* Save value in case anyone wants it */
bfd_get_size
SYNOPSIS
- file_ptr 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
size reasonable?".
*/
-file_ptr
+ufile_ptr
bfd_get_size (bfd *abfd)
{
struct stat buf;
- if (abfd->iovec == NULL)
- return 0;
-
- if (abfd->iovec->bstat (abfd, &buf) != 0)
+ 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
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);
+ 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.
+ 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)
+ void **map_addr, bfd_size_type *map_len)
{
- void *ret = (void *)-1;
+ while (abfd->my_archive != NULL
+ && !bfd_is_thin_archive (abfd->my_archive))
+ {
+ offset += abfd->origin;
+ abfd = abfd->my_archive;
+ }
if (abfd->iovec == NULL)
- return ret;
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return (void *) -1;
+ }
return abfd->iovec->bmmap (abfd, addr, len, prot, flags, offset,
- map_addr, map_len);
+ map_addr, map_len);
}
/* Memory file I/O operations. */
if (abfd->where + get > bim->size)
{
if (bim->size < (bfd_size_type) abfd->where)
- get = 0;
+ get = 0;
else
- get = bim->size - abfd->where;
+ get = bim->size - abfd->where;
bfd_set_error (bfd_error_file_truncated);
}
memcpy (ptr, bim->buffer + abfd->where, (size_t) get);
/* 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);
- }
+ {
+ 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;
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);
- }
- }
+ || 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;
- }
+ {
+ abfd->where = bim->size;
+ errno = EINVAL;
+ bfd_set_error (bfd_error_file_truncated);
+ return -1;
+ }
}
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)
+ 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;
}
projects / deliverable / binutils-gdb.git / blobdiff