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author | Ulrich Drepper <drepper@redhat.com> | 1998-07-13 12:29:13 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1998-07-13 12:29:13 +0000 |
commit | 7a68c94a5b8fb848590857f7d8c4a271bf4e8ea9 (patch) | |
tree | f91b98eed7220f1cb3b29337ca432d323c7b7408 /elf/dl-open.c | |
parent | ceb27555a1f637c048c7ec65a01f8122c3e79bf3 (diff) | |
download | glibc-7a68c94a5b8fb848590857f7d8c4a271bf4e8ea9.tar.gz glibc-7a68c94a5b8fb848590857f7d8c4a271bf4e8ea9.tar.xz glibc-7a68c94a5b8fb848590857f7d8c4a271bf4e8ea9.zip |
Update.
1998-07-10 18:14 -0400 Zack Weinberg <zack@rabi.phys.columbia.edu> * manual/Makefile: Overhauled. Generate libc.texinfo from the chapter files. Exorcise the chapters, chapters-incl mess. Support inserting doc chapters from add-on modules. (chapters): New variable. (add-chapters): New variable. (appendices): New variable. (libc.texinfo): New target. (clean): Fix bugs. (realclean): Fix bugs. * manual/texis.awk: New file. * manual/libc-texinfo.sh: New file. * manual/libc-texinfo.in: New file. * manual/conf.texi (top @node): Remove next pointer. * manual/lang.texi (top @node): Remove prev pointer. * manual/job.texi (top @node): Add explicit pointers. * manual/message.texi (top @node): Add explicit pointers. * manual/nss.texi (top @node): Add explicit pointers. * manual/process.texi (top @node): Add explicit pointers. * manual/startup.texi (top @node): Add explicit pointers. * manual/terminal.texi (top @node): Add explicit pointers. * manual/users.texi (top @node): Add explicit pointers. * manual/arith.texi: Add %MENU% tag. * manual/conf.texi: Add %MENU% tag. * manual/contrib.texi: Add %MENU% tag. * manual/ctype.texi: Add %MENU% tag. * manual/errno.texi: Add %MENU% tag. * manual/filesys.texi: Add %MENU% tag. * manual/header.texi: Add %MENU% tag. * manual/install.texi: Add %MENU% tag. * manual/intro.texi: Add %MENU% tag. * manual/io.texi: Add %MENU% tag. * manual/job.texi: Add %MENU% tag. * manual/lang.texi: Add %MENU% tag. * manual/llio.texi: Add %MENU% tag. * manual/locale.texi: Add %MENU% tag. * manual/maint.texi: Add %MENU% tag. * manual/math.texi: Add %MENU% tag. * manual/mbyte.texi: Add %MENU% tag. * manual/memory.texi: Add %MENU% tag. * manual/message.texi: Add %MENU% tag. * manual/nss.texi: Add %MENU% tag. * manual/pattern.texi: Add %MENU% tag. * manual/pipe.texi: Add %MENU% tag. * manual/process.texi: Add %MENU% tag. * manual/search.texi: Add %MENU% tag. * manual/setjmp.texi: Add %MENU% tag. * manual/signal.texi: Add %MENU% tag. * manual/socket.texi: Add %MENU% tag. * manual/startup.texi: Add %MENU% tag. * manual/stdio.texi: Add %MENU% tag. * manual/string.texi: Add %MENU% tag. * manual/sysinfo.texi: Add %MENU% tag. * manual/terminal.texi: Add %MENU% tag. * manual/time.texi: Add %MENU% tag. * manual/users.texi: Add %MENU% tag. 1998-07-13 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/i386/dl-procinfo.h (x86_cap_flags): Update. 1998-07-11 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sysdeps/unix/sysv/linux/recvmsg.c (__libc_recvmsg): Use ANSI style declaration to avoid warning. * sysdeps/unix/sysv/linux/sendmsg.c (__libc_sendmsg): Likewise. 1998-07-04 Mark Kettenis <kettenis@phys.uva.nl> * elf/rtld.c (process_dl_debug): Add missing continue. 1998-07-12 Mark Kettenis <kettenis@phys.uva.nl> * elf/rtld.c (_dl_skip_args): Make global because the Hurd startup code needs it. 1998-07-10 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makeconfig ($(common-objpfx)sysd-dirs): Write out definition of sysd-dirs-done. * Makerules: Don't generate version maps too early. ($(common-objpfx)sysd-versions): Force regeneration if the list of subdirs has changed. 1998-07-10 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/dlfcn.h (DL_CALL_FCT): Use portable comma expression. 1998-07-11 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * iconv/gconv_db.c (gen_steps): Always set *handle and *nsteps. * iconv/gconv_dl.c (__gconv_find_shlib): Correct use of tfind return value. 1998-07-12 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/dl-open.c (dl_open_worker): New function. (_dl_open): Call it to do the actual work while catching errors. * elf/dl-close.c (_dl_close): Only call termination function if the initialisation function was called. 1998-07-13 Ulrich Drepper <drepper@cygnus.com> * libio/libioP.h (_IO_cleanup_registration_needed): Use __PMT. Reported by Felix von Leitner <leitner@amdiv.de>. 1998-07-13 10:28 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/rtld.c (process_dl_debug): Add missing continue. 1998-06-23 Mark Kettenis <kettenis@phys.uva.nl>
Diffstat (limited to 'elf/dl-open.c')
-rw-r--r-- | elf/dl-open.c | 82 |
1 files changed, 64 insertions, 18 deletions
diff --git a/elf/dl-open.c b/elf/dl-open.c index 2b9590913f..b595f2df73 100644 --- a/elf/dl-open.c +++ b/elf/dl-open.c @@ -20,6 +20,7 @@ #include <dlfcn.h> #include <errno.h> #include <stdlib.h> +#include <string.h> #include <bits/libc-lock.h> #include <elf/ldsodefs.h> @@ -50,25 +51,31 @@ static size_t _dl_global_scope_alloc; __libc_lock_define_initialized_recursive (, _dl_load_lock) -struct link_map * -internal_function -_dl_open (const char *file, int mode) +/* We must be carefull not to leave us in an inconsistent state. Thus we + catch any error and re-raise it after cleaning up. */ + +struct dl_open_args { + const char *file; + int mode; + struct link_map *map; +}; + +static void +dl_open_worker (void *a) +{ + struct dl_open_args *args = a; + const char *file = args->file; + int mode = args->mode; struct link_map *new, *l; ElfW(Addr) init; struct r_debug *r; - /* Make sure we are alone. */ - __libc_lock_lock (_dl_load_lock); - /* Load the named object. */ - new = _dl_map_object (NULL, file, 0, lt_loaded, 0); + args->map = new = _dl_map_object (NULL, file, 0, lt_loaded, 0); if (new->l_searchlist) - { - /* It was already open. */ - __libc_lock_unlock (_dl_load_lock); - return new; - } + /* It was already open. */ + return; /* Load that object's dependencies. */ _dl_map_object_deps (new, NULL, 0, 0); @@ -147,7 +154,7 @@ _dl_open (const char *file, int mode) { _dl_global_scope = _dl_default_scope; nomem: - _dl_close (new); + new->l_global = 0; _dl_signal_error (ENOMEM, file, "cannot extend global scope"); } _dl_global_scope[2] = _dl_default_scope[2]; @@ -158,8 +165,8 @@ _dl_open (const char *file, int mode) } else { - if (_dl_global_scope_alloc < - (size_t) (_dl_global_scope_end - _dl_global_scope + 2)) + if (_dl_global_scope_end + 2 + == _dl_global_scope + _dl_global_scope_alloc) { /* Must extend the list. */ struct link_map **new = realloc (_dl_global_scope, @@ -167,9 +174,8 @@ _dl_open (const char *file, int mode) * sizeof (struct link_map *)); if (! new) goto nomem; - _dl_global_scope_end = new + (_dl_global_scope_end - - _dl_global_scope); _dl_global_scope = new; + _dl_global_scope_end = new + _dl_global_scope_alloc - 2; _dl_global_scope_alloc *= 2; } @@ -199,9 +205,49 @@ _dl_open (const char *file, int mode) /* We must be the static _dl_open in libc.a. A static program that has loaded a dynamic object now has competition. */ __libc_multiple_libcs = 1; +} + + +struct link_map * +internal_function +_dl_open (const char *file, int mode) +{ + struct dl_open_args args; + char *errstring; + int errcode; + + /* Make sure we are alone. */ + __libc_lock_lock (_dl_load_lock); + + args.file = file; + args.mode = mode; + args.map = NULL; + errcode = _dl_catch_error (&errstring, dl_open_worker, &args); /* Release the lock. */ __libc_lock_unlock (_dl_load_lock); - return new; + if (errstring) + { + /* Some error occured during loading. */ + char *local_errstring; + + /* Reset the global scope. */ + *_dl_global_scope_end = NULL; + + /* Remove the object from memory. It may be in an inconsistent + state if relocation failed, for example. */ + if (args.map) + _dl_close (args.map); + + /* Make a local copy of the error string so that we can release the + memory allocated for it. */ + local_errstring = strdupa (errstring); + free (errstring); + + /* Reraise the error. */ + _dl_signal_error (errcode, NULL, local_errstring); + } + + return args.map; } |