+2001-03-12 Jakub Jelinek <jakub@redhat.com>
+
+ * csu/Makefile (abi-tag.h): Define OS and version separately, allow
+ version to be overriden from config.h.
+ * csu/abi-note.S: Use OS and version separately, include config.h.
+ * elf/dl-load.c (_dl_osversion): New.
+ (_dl_map_object_from_fd): Kill some warnings.
+ (open_verify): Check .note.ABI-tag of the library if present.
+ * elf/Makefile (CPPFLAGS-dl-load.c): Add -I$(csu-objpfx).
+ * elf/cache.c (struct cache_entry): Add osversion.
+ (print_entry): Print osversion.
+ (print_cache): Pass osversion to it.
+ (compare): Sort according to osversion.
+ (save_cache): Set osversion.
+ (add_to_cache): Add osversion argument.
+ * sysdeps/generic/ldconfig.h (add_to_cache, process_file,
+ process_elf_file): Add osversion argument.
+ * elf/readlib.c (process_file): Likewise.
+ * sysdeps/generic/readelflib.c (process_elf_file): Likewise.
+ * sysdeps/unix/sysv/linux/ia64/readelflib.c (process_elf_file,
+ process_elf32_file, process_elf64_file): Likewise.
+ * sysdeps/unix/sysv/linux/i386/readelflib.c (process_elf_file,
+ process_elf32_file, process_elf64_file): Likewise.
+ * sysdeps/unix/sysv/linux/sparc/readelflib.c (process_elf_file,
+ process_elf32_file, process_elf64_file): Likewise.
+ * elf/ldconfig.c (manual_link): Pass it.
+ (search_dir): Issue diagnostic if two libs with the same soname in
+ the same directory have different .note.ABI-tag. Record osversion in
+ dlib_entry and use it from there.
+ (struct lib_entry): Remove.
+ (struct dlib_entry): Add osversion.
+ * sysdeps/generic/dl-cache.c (_dl_load_cache_lookup): Check
+ osversion.
+ * sysdeps/generic/dl-cache.h (struct file_entry_new): Replace __unused
+ field with osversion.
+ * sysdeps/generic/ldsodefs.h (_dl_osversion): Declare.
+ * sysdeps/unix/sysv/linux/init-first.c: Include ldsodefs.h.
+ * sysdeps/unix/sysv/linux/dl-osinfo.h (DL_SYSDEP_OSCHECK): Save kernel
+ version in _dl_osversion.
+ * sysdeps/unix/sysv/linux/configure.in: Define __ABI_TAG_VERSION.
+ * Makerules (build-shlib-helper, build-module-helper): New.
+ (build-shlib, build-module-helper): Make sure .note.ABI-tag comes
+ early.
+ * config.h.in (__ABI_TAG_VERSION): Add.
+ * elf/dl-minimal.c (__strtoul_internal): Set endptr on return.
+ * sysdeps/unix/sysv/linux/i386/dl-librecon.h (EXTRA_LD_ENVVARS):
+ Handle LD_ASSUME_KERNEL.
+ * sysdeps/unix/sysv/linux/dl-librecon.h: New.
+
2001-03-15 Ulrich Drepper <drepper@redhat.com>
* timezone/antarctica: Update from tzdata2001a.
lib%.so: lib%_pic.a $(+preinit) $(+postinit) $(+interp)
$(build-shlib)
-define build-shlib
-$(LINK.o) -shared -Wl,-O1 -o $@ $(sysdep-LDFLAGS) $(config-LDFLAGS) \
+define build-shlib-helper
+$(LINK.o) -shared -Wl,-O1 $(sysdep-LDFLAGS) $(config-LDFLAGS) \
$(extra-B-$(@F:lib%.so=%).so) -B$(csu-objpfx) \
$(extra-B-$(@F:lib%.so=%).so) $(load-map-file) \
-Wl,-soname=lib$(libprefix)$(@F:lib%.so=%).so$($(@F)-version) \
$(LDFLAGS.so) $(LDFLAGS-$(@F:lib%.so=%).so) \
- -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link) \
- -Wl,--whole-archive \
+ -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
+endef
+
+ifeq (yes,$(elf))
+# binutils only position loadable notes into the first page for binaries,
+# not for shared objects
+define build-shlib
+$(build-shlib-helper) \
+ -o $@.new $(csu-objpfx)/abi-note.o -Wl,--verbose \
+ $(LDLIBS-$(@F:lib%.so=%).so) 2>&1 | \
+ sed -e '/^=========/,/^=========/!d;/^=========/d' \
+ -e 's/^.*\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
+ > $@.lds; \
+ rm -f $@.new; \
+ $(build-shlib-helper) -o $@ -T $@.lds \
+ -Wl,--whole-archive $(csu-objpfx)/abi-note.o \
+ $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
+ $(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so); \
+ rm -f $@.lds
+endef
+else
+define build-shlib
+$(build-shlib-helper) \
+ -o $@ -Wl,--whole-archive \
$(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
$(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so)
endef
+endif
+
+define build-module-helper
+$(LINK.o) -shared $(sysdep-LDFLAGS) $(config-LDFLAGS) \
+ -B$(csu-objpfx) $(load-map-file) \
+ $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
+ -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link)
+endef
# This macro is similar to build-shlib but it does not define a soname
# and it does not depend on the destination name to start with `lib'.
+ifeq (yes,$(elf))
+# binutils only position loadable notes into the first page for binaries,
+# not for shared objects
define build-module
-$(LINK.o) -shared -o $@ $(sysdep-LDFLAGS) $(config-LDFLAGS) \
- -B$(csu-objpfx) $(load-map-file) \
- $(LDFLAGS.so) $(LDFLAGS-$(@F:%.so=%).so) \
- -L$(subst :, -L,$(rpath-link)) -Wl,-rpath-link=$(rpath-link) \
- -Wl,--whole-archive \
+$(build-module-helper) \
+ -o $@.new $(csu-objpfx)/abi-note.o -Wl,--verbose \
+ $(LDLIBS-$(@F:lib%.so=%).so) 2>&1 | \
+ sed -e '/^=========/,/^=========/!d;/^=========/d' \
+ -e 's/^.*\.hash[ ]*:.*$$/ .note.ABI-tag : { *(.note.ABI-tag) } &/' \
+ > $@.lds; \
+ rm -f $@.new; \
+ $(build-module-helper) -o $@ -T $@.lds \
+ -Wl,--whole-archive $(csu-objpfx)/abi-note.o \
+ $(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
+ $(no-whole-archive) $(LDLIBS-$(@F:lib%.so=%).so); \
+ rm -f $@.lds
+endef
+else
+define build-module
+$(build-module-helper) \
+ -o $@ -Wl,--whole-archive \
$(filter-out $(map-file) $(+preinit) $(+postinit),$^) \
$(no-whole-archive) $(LDLIBS-$(@F:%.so=%).so)
endef
+endif
# Don't try to use -lc when making libc.so itself.
# Also omits crti.o and crtn.o, which we do not want
/* Linux specific: minimum supported kernel version. */
#undef __LINUX_KERNEL_VERSION
+/* Override abi-tags ABI version if necessary. */
+#undef __ABI_TAG_VERSION
+
/* An extension in gcc 2.96 and up allows the subtraction of two
local labels. */
#undef HAVE_SUBTRACT_LOCAL_LABELS
$(make-target-directory)
rm -f $@.new
sed -e 's/#.*$$//' -e '/^[ ]*$$/d' $< | \
- while read conf tag; do \
+ while read conf tagos tagver; do \
test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \
: "$$conf"` != 0 || continue; \
- echo "$$tag" | \
- sed -e 's/[^0-9xXa-fA-F]/ /g' -e 's/ *$$//' \
- -e 's/ /,/g' -e 's/^ */#define ABI_TAG /' > $@.new; \
+ ( echo "$$tagos" | \
+ sed -e 's/[^0-9xXa-fA-F ]//' \
+ -e 's/^/#define __ABI_TAG_OS /'; \
+ echo "#ifndef __ABI_TAG_VERSION"; \
+ echo "$$tagver" | \
+ sed -e 's/[^0-9xXa-fA-F]/ /g' -e 's/ *$$//' \
+ -e 's/ /,/g' -e 's/^/# define __ABI_TAG_VERSION /'; \
+ echo "#endif" ) > $@.new; \
done
if test -r $@.new; then mv -f $@.new $@; \
else echo >&2 'This configuration not matched in $<'; exit 1; fi
/* Special .init and .fini section support.
- Copyright (C) 1997 Free Software Foundation, Inc.
+ Copyright (C) 1997, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it
identify the earliest release of that OS that supports this ABI.
See abi-tags (top level) for details. */
+#include <config.h>
#include <abi-tag.h> /* OS-specific ABI tag value */
/* The linker (GNU ld 2.8 and later) recognizes an allocated section whose
.long 1 /* note type */
0: .asciz "GNU" /* vendor name */
1: .align 4
-2: .long ABI_TAG /* note data: the ABI tag */
+2: .long __ABI_TAG_OS /* note data: the ABI tag */
+ .long __ABI_TAG_VERSION
3: .align 4 /* pad out section */
| $(AWK) -f gen-trusted-dirs.awk > ${@:st=T};
$(move-if-change) ${@:st=T} ${@:st=h}
touch $@
-CPPFLAGS-dl-load.c = -I$(objpfx).
+CPPFLAGS-dl-load.c = -I$(objpfx). -I$(csu-objpfx).
ifeq (yes,$(build-shared))
$(inst_slibdir)/$(rtld-version-installed-name): $(objpfx)ld.so $(+force)
char *lib; /* Library name. */
char *path; /* Path to find library. */
int flags; /* Flags to indicate kind of library. */
+ unsigned int osversion; /* Required OS version. */
uint64_t hwcap; /* Important hardware capabilities. */
int bits_hwcap; /* Number of bits set in hwcap. */
struct cache_entry *next; /* Next entry in list. */
/* Print a single entry. */
static void
-print_entry (const char *lib, int flag, uint64_t hwcap, const char *key)
+print_entry (const char *lib, int flag, unsigned int osversion,
+ uint64_t hwcap, const char *key)
{
printf ("\t%s (", lib);
switch (flag & FLAG_TYPE_MASK)
case FLAG_ELF:
case FLAG_ELF_LIBC5:
case FLAG_ELF_LIBC6:
- fputs (flag_descr [flag & FLAG_TYPE_MASK], stdout);
+ fputs (flag_descr[flag & FLAG_TYPE_MASK], stdout);
break;
default:
fputs ("unknown", stdout);
}
if (hwcap != 0)
printf (", hwcap: 0x%" PRIx64, hwcap);
+ if (osversion != 0)
+ {
+ static const char *const abi_tag_os[] =
+ {
+ [0] = "Linux",
+ [1] = "Hurd",
+ [2] = "Solaris",
+ [3] = "Unknown OS"
+ };
+ unsigned int os = osversion >> 24;
+
+ printf (", OS ABI: %s %d.%d.%d",
+ abi_tag_os[os > 3 ? 3 : os],
+ (osversion >> 16) & 0xff,
+ (osversion >> 8) & 0xff,
+ osversion & 0xff);
+ }
printf (") => %s\n", key);
}
else
{
size_t offset = ALIGN_CACHE (sizeof (struct cache_file)
- + cache->nlibs * sizeof (struct file_entry));
+ + (cache->nlibs
+ * sizeof (struct file_entry)));
/* This is where the strings start. */
cache_data = (const char *) &cache->libs[cache->nlibs];
cache_new = (struct cache_file_new *) ((void *)cache + offset);
- if (!memcmp (cache_new->magic, CACHEMAGIC_NEW, sizeof CACHEMAGIC_NEW - 1)
- && !memcmp (cache_new->version, CACHE_VERSION,
- sizeof CACHE_VERSION - 1))
+ if (memcmp (cache_new->magic, CACHEMAGIC_NEW,
+ sizeof CACHEMAGIC_NEW - 1) == 0
+ && memcmp (cache_new->version, CACHE_VERSION,
+ sizeof CACHE_VERSION - 1) == 0)
{
cache_data = (const char *) cache_new;
format = 1;
/* Print everything. */
for (i = 0; i < cache->nlibs; i++)
print_entry (cache_data + cache->libs[i].key,
- cache->libs[i].flags, 0,
+ cache->libs[i].flags, 0, 0,
cache_data + cache->libs[i].value);
}
else if (format == 1)
{
- printf (_("%d libs found in cache `%s'\n"), cache_new->nlibs, cache_name);
+ printf (_("%d libs found in cache `%s'\n"),
+ cache_new->nlibs, cache_name);
/* Print everything. */
for (i = 0; i < cache_new->nlibs; i++)
print_entry (cache_data + cache_new->libs[i].key,
cache_new->libs[i].flags,
+ cache_new->libs[i].osversion,
cache_new->libs[i].hwcap,
cache_data + cache_new->libs[i].value);
}
return 1;
else if (e2->hwcap < e1->hwcap)
return -1;
+ if (e2->osversion > e1->osversion)
+ return 1;
+ if (e2->osversion < e1->osversion)
+ return -1;
}
return res;
}
/* And the list of all entries in the new format. */
file_entries_new_size = sizeof (struct cache_file_new)
+ cache_entry_count * sizeof (struct file_entry_new);
- file_entries_new = (struct cache_file_new *) xmalloc (file_entries_new_size);
+ file_entries_new =
+ (struct cache_file_new *) xmalloc (file_entries_new_size);
/* Fill in the header. */
memset (file_entries_new, 0, sizeof (struct cache_file_new));
- memcpy (file_entries_new->magic, CACHEMAGIC_NEW, sizeof CACHEMAGIC_NEW - 1);
- memcpy (file_entries_new->version, CACHE_VERSION, sizeof CACHE_VERSION - 1);
+ memcpy (file_entries_new->magic, CACHEMAGIC_NEW,
+ sizeof CACHEMAGIC_NEW - 1);
+ memcpy (file_entries_new->version, CACHE_VERSION,
+ sizeof CACHE_VERSION - 1);
file_entries_new->nlibs = cache_entry_count;
file_entries_new->len_strings = total_strlen;
always begins at the beginning of the the new cache
struct. */
file_entries_new->libs[idx_new].flags = entry->flags;
+ file_entries_new->libs[idx_new].osversion = entry->osversion;
file_entries_new->libs[idx_new].hwcap = entry->hwcap;
file_entries_new->libs[idx_new].key = str_offset;
- file_entries_new->libs[idx_new].__unused = 0;
}
len = strlen (entry->lib);
str = stpcpy (str, entry->lib);
/* Write contents. */
if (opt_format != 2)
{
- if (write (fd, file_entries, file_entries_size) != (ssize_t)file_entries_size)
+ if (write (fd, file_entries, file_entries_size)
+ != (ssize_t)file_entries_size)
error (EXIT_FAILURE, errno, _("Writing of cache data failed"));
}
if (opt_format != 0)
/* Align cache. */
if (opt_format != 2)
{
- char zero [pad];
+ char zero[pad];
if (write (fd, zero, pad) != (ssize_t)pad)
error (EXIT_FAILURE, errno, _("Writing of cache data failed"));
}
/* Add one library to the cache. */
void
add_to_cache (const char *path, const char *lib, int flags,
- uint64_t hwcap)
+ unsigned int osversion, uint64_t hwcap)
{
struct cache_entry *new_entry, *ptr, *prev;
char *full_path;
new_entry->lib = xstrdup (lib);
new_entry->path = full_path;
new_entry->flags = flags;
+ new_entry->osversion = osversion;
new_entry->hwcap = hwcap;
new_entry->bits_hwcap = 0;
#include <sys/stat.h>
#include <sys/types.h>
#include "dynamic-link.h"
+#include <abi-tag.h>
+#include <dl-osinfo.h>
#include <dl-dst.h>
size_t _dl_pagesize;
+unsigned int _dl_osversion;
+
int _dl_clktck;
extern const char *_dl_platform;
if (__builtin_expect (_dl_debug_mask & DL_DEBUG_FILES, 0))
_dl_debug_printf (" dynamic: 0x%0*lx base: 0x%0*lx size: 0x%0*Zx\n"
" entry: 0x%0*lx phdr: 0x%0*lx phnum: %*u\n\n",
- sizeof (void *) * 2, (unsigned long int) l->l_ld,
- sizeof (void *) * 2, (unsigned long int) l->l_addr,
- sizeof (void *) * 2, maplength,
- sizeof (void *) * 2, (unsigned long int) l->l_entry,
- sizeof (void *) * 2, (unsigned long int) l->l_phdr,
- sizeof (void *) * 2, l->l_phnum);
+ (int) sizeof (void *) * 2, (unsigned long int) l->l_ld,
+ (int) sizeof (void *) * 2, (unsigned long int) l->l_addr,
+ (int) sizeof (void *) * 2, maplength,
+ (int) sizeof (void *) * 2, (unsigned long int) l->l_entry,
+ (int) sizeof (void *) * 2, (unsigned long int) l->l_phdr,
+ (int) sizeof (void *) * 2, l->l_phnum);
elf_get_dynamic_info (l);
[EI_OSABI] = ELFOSABI_SYSV,
[EI_ABIVERSION] = 0
};
+ static const struct {
+ ElfW(Word) vendorlen, datalen, type;
+ char vendor [4];
+ } expected_note = { 4, 16, 1, "GNU" };
int fd;
/* Open the file. We always open files read-only. */
if (fd != -1)
{
ElfW(Ehdr) *ehdr;
+ ElfW(Phdr) *phdr, *ph;
+ ElfW(Word) *abi_note, abi_note_buf[8];
+ unsigned int osversion;
+ size_t maplength;
/* We successfully openened the file. Now verify it is a file
we can use. */
lose (0, fd, name, NULL, NULL,
N_("ELF file version does not match current one"));
if (! __builtin_expect (elf_machine_matches_host (ehdr), 1))
- {
- close_and_out:
- __close (fd);
- __set_errno (ENOENT);
- fd = -1;
- }
+ goto close_and_out;
else if (__builtin_expect (ehdr->e_phentsize, sizeof (ElfW(Phdr)))
!= sizeof (ElfW(Phdr)))
lose (0, fd, name, NULL, NULL,
&& __builtin_expect (ehdr->e_type, ET_EXEC) != ET_EXEC)
lose (0, fd, name, NULL, NULL,
N_("only ET_DYN and ET_EXEC can be loaded"));
+
+ maplength = ehdr->e_phnum * sizeof (ElfW(Phdr));
+ if (ehdr->e_phoff + maplength <= fbp->len)
+ phdr = (void *) (fbp->buf + ehdr->e_phoff);
+ else
+ {
+ phdr = alloca (maplength);
+ __lseek (fd, SEEK_SET, ehdr->e_phoff);
+ if (__libc_read (fd, (void *) phdr, maplength) != maplength)
+ lose (errno, fd, name, NULL, NULL, N_("cannot read file data"));
+ }
+
+ /* Check .note.ABI-tag if present. */
+ for (ph = phdr; ph < &phdr[ehdr->e_phnum]; ++ph)
+ if (ph->p_type == PT_NOTE && ph->p_filesz == 32 && ph->p_align >= 4)
+ {
+ if (ph->p_offset + 32 <= fbp->len)
+ abi_note = (void *) (fbp->buf + ph->p_offset);
+ else
+ {
+ __lseek (fd, SEEK_SET, ph->p_offset);
+ if (__libc_read (fd, (void *) abi_note_buf, 32) != 32)
+ lose (errno, fd, name, NULL, NULL,
+ N_("cannot read file data"));
+ abi_note = abi_note_buf;
+ }
+
+ if (memcmp (abi_note, &expected_note, sizeof (expected_note)))
+ continue;
+
+ osversion = (abi_note [5] & 0xff) * 65536
+ + (abi_note [6] & 0xff) * 256
+ + (abi_note [7] & 0xff);
+ if (abi_note [4] != __ABI_TAG_OS
+ || (_dl_osversion && _dl_osversion < osversion))
+ {
+ close_and_out:
+ __close (fd);
+ __set_errno (ENOENT);
+ fd = -1;
+ }
+
+ break;
+ }
}
return fd;
|| (result == ULONG_MAX / 10 && digval > ULONG_MAX % 10))
{
errno = ERANGE;
+ if (endptr != NULL)
+ *endptr = (char *) nptr;
return ULONG_MAX;
}
result *= base;
++nptr;
}
+ if (endptr != NULL)
+ *endptr = (char *) nptr;
return result * sign;
}
#define PACKAGE _libc_intl_domainname
-struct lib_entry
- {
- int flags;
- uint64_t hwcap;
- char *lib;
- char *path;
- };
-
static const struct
{
const char *name;
int flag;
-} lib_types [] =
+} lib_types[] =
{
{"libc4", FLAG_LIBC4},
{"libc5", FLAG_ELF_LIBC5},
*equal_sign = '\0';
++equal_sign;
entry->flag = FLAG_ANY;
- for (i = 0; i < sizeof (lib_types) / sizeof (lib_types [0]); ++i)
+ for (i = 0; i < sizeof (lib_types) / sizeof (lib_types[0]); ++i)
if (strcmp (equal_sign, lib_types[i].name) == 0)
{
entry->flag = lib_types[i].flag;
i = strlen (entry->path) - 1;
while (entry->path[i] == '/' && i > 0)
{
- entry->path [i] = '\0';
+ entry->path[i] = '\0';
--i;
}
char *soname;
struct stat64 stat_buf;
int flag;
+ unsigned int osversion;
/* Prepare arguments for create_links call. Split library name in
directory and filename first. Since path is allocated, we've got
free (path);
return;
}
- if (process_file (real_library, library, libname, &flag, &soname, 0))
+ if (process_file (real_library, library, libname, &flag, &osversion,
+ &soname, 0))
{
error (0, 0, _("No link created since soname could not be found for %s"),
library);
char *soname;
int flag;
int is_link;
+ unsigned int osversion;
struct dlib_entry *next;
};
struct stat64 stat_buf;
int is_link;
uint64_t hwcap = path_hwcap (entry->path);
+ unsigned int osversion;
file_name_len = PATH_MAX;
file_name = alloca (file_name_len);
real_name = real_file_name;
if (process_file (real_name, file_name, direntry->d_name, &flag,
- &soname, is_link))
+ &osversion, &soname, is_link))
{
if (real_name != real_file_name)
free (real_name);
error (0, 0, _("libraries %s and %s in directory %s have same soname but different type."),
dlib_ptr->name, direntry->d_name, entry->path);
}
+ /* OS version should be the same - sanity check. */
+ if (dlib_ptr->osversion != osversion)
+ error (0, 0, _("libraries %s and %s in directory %s have same\n"
+ "soname but different minimal supported OS version."),
+ dlib_ptr->name, direntry->d_name, entry->path);
free (dlib_ptr->name);
dlib_ptr->name = xstrdup (direntry->d_name);
dlib_ptr->is_link = is_link;
dlib_ptr = (struct dlib_entry *)xmalloc (sizeof (struct dlib_entry));
dlib_ptr->name = xstrdup (direntry->d_name);
dlib_ptr->flag = flag;
+ dlib_ptr->osversion = osversion;
dlib_ptr->soname = soname;
dlib_ptr->is_link = is_link;
/* Add at head of list. */
create_links (dir_name, entry->path, dlib_ptr->name,
dlib_ptr->soname);
if (opt_build_cache)
- add_to_cache (entry->path, dlib_ptr->soname, dlib_ptr->flag, hwcap);
+ add_to_cache (entry->path, dlib_ptr->soname, dlib_ptr->flag,
+ dlib_ptr->osversion, hwcap);
}
/* Free all resources. */
{
int i;
for (i = remaining; i < argc; ++i)
- add_dir (argv [i]);
+ add_dir (argv[i]);
}
if (opt_chroot)
int i;
for (i = remaining; i < argc; ++i)
- manual_link (argv [i]);
+ manual_link (argv[i]);
exit (0);
}
-/* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Jaeger <aj@suse.de>, 1999 and
Jakub Jelinek <jakub@redhat.com>, 1999.
int flag;
};
-static struct known_names interpreters [] =
+static struct known_names interpreters[] =
{
- {"/lib/" LD_SO, FLAG_ELF_LIBC6},
+ { "/lib/" LD_SO, FLAG_ELF_LIBC6 },
#ifdef SYSDEP_KNOWN_INTERPRETER_NAMES
SYSDEP_KNOWN_INTERPRETER_NAMES
#endif
};
-static struct known_names known_libs [] =
+static struct known_names known_libs[] =
{
- {LIBC_SO, FLAG_ELF_LIBC6},
- {LIBM_SO, FLAG_ELF_LIBC6},
+ { LIBC_SO, FLAG_ELF_LIBC6 },
+ { LIBM_SO, FLAG_ELF_LIBC6 },
#ifdef SYSDEP_KNOWN_LIBRARY_NAMES
SYSDEP_KNOWN_LIBRARY_NAMES
#endif
/* Returns 0 if everything is ok, != 0 in case of error. */
int
process_file (const char *real_file_name, const char *file_name,
- const char *lib, int *flag, char **soname, int is_link)
+ const char *lib, int *flag, unsigned int *osversion,
+ char **soname, int is_link)
{
FILE *file;
struct stat64 statbuf;
void *file_contents;
int ret;
-
ElfW(Ehdr) *elf_header;
struct exec *aout_header;
}
elf_header = (ElfW(Ehdr) *) file_contents;
- if (elf_header->e_ident [EI_MAG0] != ELFMAG0
- || elf_header->e_ident [EI_MAG1] != ELFMAG1
- || elf_header->e_ident [EI_MAG2] != ELFMAG2
- || elf_header->e_ident [EI_MAG3] != ELFMAG3)
+ if (memcmp (elf_header->e_ident, ELFMAG, SELFMAG) != 0)
{
/* The file is neither ELF nor aout. Check if it's a linker script,
like libc.so - otherwise complain. */
goto done;
}
- if (process_elf_file (file_name, lib, flag, soname, file_contents,
- statbuf.st_size))
+ if (process_elf_file (file_name, lib, flag, osversion, soname,
+ file_contents, statbuf.st_size))
ret = 1;
done:
#undef MEMPCPY
#undef MEMCHR
#undef STRCOLL
+#undef STRLEN
+#undef STRCAT
#undef L
#undef BTOWC
/* Only accept hwcap if it's for the right platform. */
#define HWCAP_CHECK \
+ if (_dl_osversion && cache_new->libs[middle].osversion > _dl_osversion) \
+ continue; \
if (_DL_PLATFORMS_COUNT && platform != -1 \
&& (cache_new->libs[middle].hwcap & _DL_HWCAP_PLATFORM) != 0 \
&& (cache_new->libs[middle].hwcap & _DL_HWCAP_PLATFORM) != platform) \
{
int32_t flags; /* This is 1 for an ELF library. */
uint32_t key, value; /* String table indices. */
- uint32_t __unused; /* Align next field always on 8 byte boundary. */
+ uint32_t osversion; /* Required OS version. */
uint64_t hwcap; /* Hwcap entry. */
};
extern void save_cache (const char *cache_name);
extern void add_to_cache (const char *path, const char *lib, int flags,
- uint64_t hwcap);
+ unsigned int osversion, uint64_t hwcap);
/* Declared in readlib.c. */
extern int process_file (const char *real_file_name, const char *file_name,
- const char *lib, int *flag, char **soname,
- int is_link);
+ const char *lib, int *flag, unsigned int *osversion,
+ char **soname, int is_link);
/* Declared in readelflib.c. */
extern int process_elf_file (const char *file_name, const char *lib, int *flag,
- char **soname, void *file_contents,
- size_t file_length);
+ unsigned int *osversion, char **soname,
+ void *file_contents, size_t file_length);
/* Declared in chroot_canon.c. */
extern char *chroot_canon (const char *chroot, const char *name);
/* Cached value of `getpagesize ()'. */
extern size_t _dl_pagesize;
+/* OS version. */
+extern unsigned int _dl_osversion;
+
/* File descriptor referring to the zero-fill device. */
extern int _dl_zerofd;
-/* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Jaeger <aj@suse.de>, 1999 and
Jakub Jelinek <jakub@redhat.com>, 1999.
/* Returns 0 if everything is ok, != 0 in case of error. */
int
process_elf_file (const char *file_name, const char *lib, int *flag,
- char **soname, void *file_contents, size_t file_length)
+ unsigned int *osversion, char **soname, void *file_contents,
+ size_t file_length)
{
int i;
unsigned int j;
char *dynamic_strings;
elf_header = (ElfW(Ehdr) *) file_contents;
+ *osversion = 0;
if (elf_header->e_ident [EI_CLASS] != ElfW (CLASS))
{
dynamic_addr = segment->p_offset;
dynamic_size = segment->p_filesz;
break;
+
case PT_INTERP:
program_interpreter = (char *) (file_contents + segment->p_offset);
check_ptr (program_interpreter);
break;
}
break;
+
+ case PT_NOTE:
+ if (!*osversion && segment->p_filesz == 32 && segment->p_align >= 4)
+ {
+ ElfW(Word) *abi_note = (ElfW(Word) *) (file_contents
+ + segment->p_offset);
+ if (abi_note [0] == 4 && abi_note [1] == 16 && abi_note [2] == 1
+ && memcmp (abi_note + 3, "GNU", 4) == 0)
+ *osversion = (abi_note [4] << 24) |
+ ((abi_note [5] & 0xff) << 16) |
+ ((abi_note [6] & 0xff) << 8) |
+ (abi_note [7] & 0xff);
+ }
+ break;
+
default:
break;
}
echo $ac_n "checking for kernel header at least $minimum_kernel""... $ac_c" 1>&6
echo "configure:89: checking for kernel header at least $minimum_kernel" >&5
decnum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/(\1 * 65536 + \2 * 256 + \3)/'`;
+ abinum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1,\2,\3/'`;
cat > conftest.$ac_ext <<EOF
#line 92 "configure"
#include "confdefs.h"
if test "$libc_minimum_kernel" = ok; then
cat >> confdefs.h <<EOF
#define __LINUX_KERNEL_VERSION $decnum
+EOF
+
+ cat >> confdefs.h <<EOF
+#define __ABI_TAG_VERSION $abinum
EOF
else
AC_MSG_CHECKING(for kernel header at least $minimum_kernel)
changequote(,)dnl
decnum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/(\1 * 65536 + \2 * 256 + \3)/'`;
+ abinum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1,\2,\3/'`;
changequote([,])dnl
AC_EGREP_CPP([eat flaming death], [#include <linux/version.h>
#if LINUX_VERSION_CODE < $decnum
AC_MSG_RESULT($libc_minimum_kernel)
if test "$libc_minimum_kernel" = ok; then
AC_DEFINE_UNQUOTED(__LINUX_KERNEL_VERSION, $decnum)
+ AC_DEFINE_UNQUOTED(__ABI_TAG_VERSION, $abinum)
else
AC_MSG_ERROR([*** The available kernel headers are older than the requested
*** compatible kernel version])
--- /dev/null
+/* Optional code to distinguish library flavours.
+ Copyright (C) 2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2001.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef _DL_LIBRECON_H
+#define _DL_LIBRECON_H 1
+
+/* Recognizing extra environment variables. */
+#define EXTRA_LD_ENVVARS \
+ case 13: \
+ if (memcmp (&envline[3], "ASSUME_KERNEL", 13) == 0) \
+ { \
+ unsigned long int i, j, osversion = 0; \
+ char *p = &envline[17], *q; \
+ \
+ for (i = 0; i < 3; i++, p = q + 1) \
+ { \
+ j = __strtoul_internal (p, &q, 0, 0); \
+ if (j >= 255 || p == q || (i < 2 && *q && *q != '.')) \
+ { \
+ osversion = 0; \
+ break; \
+ } \
+ osversion |= j << (16 - 8 * i); \
+ if (!*q) \
+ break; \
+ } \
+ if (osversion) \
+ _dl_osversion = osversion; \
+ break; \
+ }
+
+#endif /* dl-librecon.h */
if (version < __LINUX_KERNEL_VERSION) \
/* Not sufficent. */ \
FATAL ("FATAL: kernel too old\n"); \
+ \
+ _dl_osversion = version; \
} \
} while (0)
/* Recognizing extra environment variables. */
#define EXTRA_LD_ENVVARS \
+ case 13: \
+ if (memcmp (&envline[3], "ASSUME_KERNEL", 13) == 0) \
+ { \
+ unsigned long int i, j, osversion = 0; \
+ char *p = &envline[17], *q; \
+ \
+ for (i = 0; i < 3; i++, p = q + 1) \
+ { \
+ j = __strtoul_internal (p, &q, 0, 0); \
+ if (j >= 255 || p == q || (i < 2 && *q && *q != '.')) \
+ { \
+ osversion = 0; \
+ break; \
+ } \
+ osversion |= j << (16 - 8 * i); \
+ if (!*q) \
+ break; \
+ } \
+ if (osversion) \
+ _dl_osversion = osversion; \
+ break; \
+ } \
+ \
case 15: \
if (memcmp (&envline[3], "LIBRARY_VERSION", 15) == 0) \
{ \
int process_elf32_file (const char *file_name, const char *lib, int *flag,
- char **soname, void *file_contents,
- size_t file_length);
+ unsigned int *osversion, char **soname,
+ void *file_contents, size_t file_length);
int process_elf64_file (const char *file_name, const char *lib, int *flag,
- char **soname, void *file_contents,
- size_t file_length);
+ unsigned int *osversion, char **soname,
+ void *file_contents, size_t file_length);
/* Returns 0 if everything is ok, != 0 in case of error. */
int
process_elf_file (const char *file_name, const char *lib, int *flag,
- char **soname, void *file_contents, size_t file_length)
+ unsigned int *osversion, char **soname, void *file_contents,
+ size_t file_length)
{
ElfW(Ehdr) *elf_header = (ElfW(Ehdr) *) file_contents;
int ret;
if (elf_header->e_ident [EI_CLASS] == ELFCLASS32)
- return process_elf32_file (file_name, lib, flag, soname, file_contents,
- file_length);
+ return process_elf32_file (file_name, lib, flag, osversion, soname,
+ file_contents, file_length);
else
{
switch (elf_header->e_machine)
return 1;
}
- ret = process_elf64_file (file_name, lib, flag, soname, file_contents,
- file_length);
+ ret = process_elf64_file (file_name, lib, flag, osversion, soname,
+ file_contents, file_length);
/* IA64/X86-64 64bit libraries are always libc.so.6+. */
if (!ret)
switch (elf_header->e_machine)
-/* Copyright (C) 2000 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
int process_elf32_file (const char *file_name, const char *lib, int *flag,
- char **soname, void *file_contents, size_t file_length);
+ unsigned int *osversion, char **soname,
+ void *file_contents, size_t file_length);
int process_elf64_file (const char *file_name, const char *lib, int *flag,
- char **soname, void *file_contents, size_t file_length);
+ unsigned int *osversion, char **soname,
+ void *file_contents, size_t file_length);
/* Returns 0 if everything is ok, != 0 in case of error. */
int
process_elf_file (const char *file_name, const char *lib, int *flag,
- char **soname, void *file_contents, size_t file_length)
+ unsigned int *osversion, char **soname,
+ void *file_contents, size_t file_length)
{
ElfW(Ehdr) *elf_header = (ElfW(Ehdr) *) file_contents;
int ret;
if (elf_header->e_ident [EI_CLASS] == ELFCLASS32)
- return process_elf32_file (file_name, lib, flag, soname, file_contents,
- file_length);
+ return process_elf32_file (file_name, lib, flag, osversion, soname,
+ file_contents, file_length);
else
{
- ret = process_elf64_file (file_name, lib, flag, soname, file_contents,
- file_length);
+ ret = process_elf64_file (file_name, lib, flag, osversion, soname,
+ file_contents, file_length);
/* Intel 64bit libraries are always libc.so.6+. */
if (!ret)
*flag = FLAG_IA64_LIB64|FLAG_ELF_LIBC6;
#include <libc-internal.h>
#ifndef SHARED
+# include <ldsodefs.h>
# include "dl-osinfo.h"
#endif
-/* Copyright (C) 1999 Free Software Foundation, Inc.
+/* Copyright (C) 1999, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Jaeger <aj@suse.de>, 1999 and
Jakub Jelinek <jakub@redhat.com>, 1999.
int process_elf32_file (const char *file_name, const char *lib, int *flag,
- char **soname, void *file_contents,
- size_t file_length);
+ unsigned int *osversion, char **soname,
+ void *file_contents, size_t file_length);
int process_elf64_file (const char *file_name, const char *lib, int *flag,
- char **soname, void *file_contents,
- size_t file_length);
+ unsigned int *osversion, char **soname,
+ void *file_contents, size_t file_length);
/* Returns 0 if everything is ok, != 0 in case of error. */
int
process_elf_file (const char *file_name, const char *lib, int *flag,
- char **soname, void *file_contents, size_t file_length)
+ unsigned int *osversion, char **soname, void *file_contents,
+ size_t file_length)
{
ElfW(Ehdr) *elf_header = (ElfW(Ehdr) *) file_contents;
int ret;
if (elf_header->e_ident [EI_CLASS] == ELFCLASS32)
- return process_elf32_file (file_name, lib, flag, soname, file_contents,
- file_length);
+ return process_elf32_file (file_name, lib, flag, osversion, soname,
+ file_contents, file_length);
else
{
- ret = process_elf64_file (file_name, lib, flag, soname, file_contents,
- file_length);
+ ret = process_elf64_file (file_name, lib, flag, osversion, soname,
+ file_contents, file_length);
/* Sparc 64bit libraries are always libc.so.6+. */
if (!ret)
*flag = FLAG_SPARC_LIB64|FLAG_ELF_LIBC6;
git://sourceware.org / glibc.git / commitdiff