diff options
author | Chris Johns <chrisj@rtems.org> | 2012-11-21 10:40:01 +1100 |
---|---|---|
committer | Chris Johns <chrisj@rtems.org> | 2012-11-21 10:40:01 +1100 |
commit | fe19d0684ada32a5a9d010144585e48db17c6aff (patch) | |
tree | e0420d2833185440a6d5ab7050c9bb49e337a1eb /linkers | |
parent | fd8a2c559f29dba37ff8de43ead42f89e160eaa2 (diff) |
Fix archive GNU extension and make image read/write follow POSIX.
Fix the finding of a file name in the GNU extension for long names
in GNU archives so the correct location is referenced.
Made the image read and write routines keep reading if not all the
requested data is read or written due to possible signals.
Diffstat (limited to 'linkers')
-rw-r--r-- | linkers/rld-files.cpp | 66 | ||||
-rw-r--r-- | linkers/rld-files.h | 15 |
2 files changed, 52 insertions, 29 deletions
diff --git a/linkers/rld-files.cpp b/linkers/rld-files.cpp index 4a838bb..c5901ce 100644 --- a/linkers/rld-files.cpp +++ b/linkers/rld-files.cpp @@ -402,21 +402,41 @@ namespace rld } ssize_t - image::read (uint8_t* buffer, size_t size) + image::read (void* buffer_, size_t size) { - ssize_t rsize = ::read (fd (), buffer, size); - if (rsize < 0) - throw rld::error (strerror (errno), "read:" + name ().path ()); - return rsize; + uint8_t* buffer = static_cast <uint8_t*> (buffer_); + size_t have_read = 0; + size_t to_read = size; + while (have_read < size) + { + ssize_t rsize = ::read (fd (), buffer, to_read); + if (rsize < 0) + throw rld::error (strerror (errno), "read:" + name ().path ()); + if (rsize == 0) + break; + have_read += rsize; + to_read -= rsize; + buffer += rsize; + } + return have_read; } ssize_t - image::write (const void* buffer, size_t size) + image::write (const void* buffer_, size_t size) { - ssize_t wsize = ::write (fd (), buffer, size); - if (wsize < 0) - throw rld::error (strerror (errno), "write:" + name ().path ()); - return wsize; + const uint8_t* buffer = static_cast <const uint8_t*> (buffer_); + size_t have_written = 0; + size_t to_write = size; + while (have_written < size) + { + ssize_t wsize = ::write (fd (), buffer, to_write); + if (wsize < 0) + throw rld::error (strerror (errno), "write:" + name ().path ()); + have_written += wsize; + to_write -= wsize; + buffer += wsize; + } + return have_written; } void @@ -487,6 +507,10 @@ namespace rld { #define COPY_FILE_BUFFER_SIZE (8 * 1024) uint8_t* buffer = 0; + + if (size == 0) + size = in.name ().size (); + try { buffer = new uint8_t[COPY_FILE_BUFFER_SIZE]; @@ -792,6 +816,10 @@ namespace rld void archive::create (object_list& objects) { + if (rld::verbose () >= RLD_VERBOSE_INFO) + std::cout << "archive::create: " << name ().full () + << ", objects: " << objects.size () << std::endl; + open (true); try @@ -838,7 +866,7 @@ namespace rld if (oname.length () > rld_archive_fname_size) { - size_t pos = extended_file_names.find_first_of (oname + '\n'); + size_t pos = extended_file_names.find (oname + '\n'); if (pos == std::string::npos) throw rld_error_at ("extended file name not found"); std::ostringstream oss; @@ -848,7 +876,7 @@ namespace rld write_header (oname, 0, 0, 0, 0666, obj.name ().size ()); obj.seek (0); - copy_file (obj, *this, obj.name ().size ()); + copy_file (obj, *this); } catch (...) { @@ -1052,20 +1080,6 @@ namespace rld return archive_; } -#if 0 - int - object::sections () const - { - return ehdr.e_shnum; - } - - int - object::section_strings () const - { - return ehdr.e_shstrndx; - } -#endif - rld::symbols::table& object::unresolved_symbols () { diff --git a/linkers/rld-files.h b/linkers/rld-files.h index fd593bf..b057b2e 100644 --- a/linkers/rld-files.h +++ b/linkers/rld-files.h @@ -240,7 +240,7 @@ namespace rld const std::string& oname () const; /** - * The object's offset in the archive. + * The object's offset in the archive or on disk. */ off_t offset () const; @@ -253,7 +253,7 @@ namespace rld std::string aname_; //< The archive name. std::string oname_; //< The object name. off_t offset_; //< The object's offset in the archive. - size_t size_; //< The object's size in teh archive. + size_t size_; //< The object's size in the archive or on disk. }; /** @@ -308,7 +308,7 @@ namespace rld /** * Read a block from the file. */ - virtual ssize_t read (uint8_t* buffer, size_t size); + virtual ssize_t read (void* buffer, size_t size); /** * Write a block from the file. @@ -780,6 +780,15 @@ namespace rld }; /** + * Copy the in file to the out file. + * + * @param in The input file. + * @param out The output file. + * @param size The amount to copy. If 0 the whole on in is copied. + */ + void copy_file (image& in, image& out, size_t size = 0); + + /** * Find the libraries given the list of libraries as bare name which * have 'lib' and '.a' added. */ |