libentry_t *libent;
int i, strtabsize;
- if (_dl_cache_addr == (caddr_t) - 1)
+ if (_dl_cache_addr == MAP_FAILED)
return -1;
else if (_dl_cache_addr != NULL)
return 0;
if (_dl_stat(LDSO_CACHE, &st)
- || (fd = _dl_open(LDSO_CACHE, O_RDONLY, 0)) < 0) {
- _dl_cache_addr = (caddr_t) - 1; /* so we won't try again */
+ || (fd = _dl_open(LDSO_CACHE, O_RDONLY|O_CLOEXEC, 0)) < 0) {
+ _dl_cache_addr = MAP_FAILED; /* so we won't try again */
return -1;
}
fail:
_dl_munmap(_dl_cache_addr, _dl_cache_size);
- _dl_cache_addr = (caddr_t) - 1;
+ _dl_cache_addr = MAP_FAILED;
return -1;
}
int _dl_unmap_cache(void)
{
- if (_dl_cache_addr == NULL || _dl_cache_addr == (caddr_t) - 1)
+ if (_dl_cache_addr == NULL || _dl_cache_addr == MAP_FAILED)
return -1;
#if 1
/* This function's behavior must exactly match that
* in uClibc/ldso/util/ldd.c */
static struct elf_resolve *
-search_for_named_library(const char *name, int secure, const char *path_list,
+search_for_named_library(const char *name, unsigned rflags, const char *path_list,
struct dyn_elf **rpnt)
{
char *path, *path_n, *mylibname;
_dl_strcpy(mylibname, "."); /* Assume current dir if empty path */
_dl_strcat(mylibname, "/");
_dl_strcat(mylibname, name);
- if ((tpnt = _dl_load_elf_shared_library(secure, rpnt, mylibname)) != NULL)
- return tpnt;
+#ifdef __LDSO_SAFE_RUNPATH__
+ if (*mylibname == '/')
+#endif
+ if ((tpnt = _dl_load_elf_shared_library(rflags, rpnt, mylibname)) != NULL)
+ return tpnt;
path_n = path+1;
}
path++;
unsigned long _dl_error_number;
unsigned long _dl_internal_error_number;
-struct elf_resolve *_dl_load_shared_library(int secure, struct dyn_elf **rpnt,
- struct elf_resolve *tpnt, char *full_libname, int __attribute__((unused)) trace_loaded_objects)
+struct elf_resolve *_dl_load_shared_library(unsigned rflags, struct dyn_elf **rpnt,
+ struct elf_resolve *tpnt, char *full_libname, int attribute_unused trace_loaded_objects)
{
char *pnt;
struct elf_resolve *tpnt1;
if (libname != full_libname) {
_dl_if_debug_dprint("\ttrying file='%s'\n", full_libname);
- tpnt1 = _dl_load_elf_shared_library(secure, rpnt, full_libname);
+ tpnt1 = _dl_load_elf_shared_library(rflags, rpnt, full_libname);
if (tpnt1) {
return tpnt1;
}
if (pnt) {
pnt += (unsigned long) tpnt->dynamic_info[DT_STRTAB];
_dl_if_debug_dprint("\tsearching RPATH='%s'\n", pnt);
- if ((tpnt1 = search_for_named_library(libname, secure, pnt, rpnt)) != NULL)
+ if ((tpnt1 = search_for_named_library(libname, rflags, pnt, rpnt)) != NULL)
return tpnt1;
}
#endif
+#ifdef __LDSO_LD_LIBRARY_PATH__
/* Check in LD_{ELF_}LIBRARY_PATH, if specified and allowed */
if (_dl_library_path) {
_dl_if_debug_dprint("\tsearching LD_LIBRARY_PATH='%s'\n", _dl_library_path);
- if ((tpnt1 = search_for_named_library(libname, secure, _dl_library_path, rpnt)) != NULL)
+ if ((tpnt1 = search_for_named_library(libname, rflags, _dl_library_path, rpnt)) != NULL)
{
return tpnt1;
}
}
-
+#endif
/*
* The ABI specifies that RUNPATH is searched after LD_LIBRARY_PATH.
*/
if (pnt) {
pnt += (unsigned long) tpnt->dynamic_info[DT_STRTAB];
_dl_if_debug_dprint("\tsearching RUNPATH='%s'\n", pnt);
- if ((tpnt1 = search_for_named_library(libname, secure, pnt, rpnt)) != NULL)
+ if ((tpnt1 = search_for_named_library(libname, rflags, pnt, rpnt)) != NULL)
return tpnt1;
}
#endif
* the hard coded paths that follow (i.e before /lib and /usr/lib).
*/
#ifdef __LDSO_CACHE_SUPPORT__
- if (_dl_cache_addr != NULL && _dl_cache_addr != (caddr_t) - 1) {
+ if (_dl_cache_addr != NULL && _dl_cache_addr != MAP_FAILED) {
int i;
header_t *header = (header_t *) _dl_cache_addr;
libentry_t *libent = (libentry_t *) & header[1];
|| libent[i].flags == LIB_ELF_LIBC0
|| libent[i].flags == LIB_ELF_LIBC5)
&& _dl_strcmp(libname, strs + libent[i].sooffset) == 0
- && (tpnt1 = _dl_load_elf_shared_library(secure, rpnt, strs + libent[i].liboffset))
+ && (tpnt1 = _dl_load_elf_shared_library(rflags, rpnt, strs + libent[i].liboffset))
) {
return tpnt1;
}
}
}
#endif
-
+#if defined SHARED && defined __LDSO_SEARCH_INTERP_PATH__
/* Look for libraries wherever the shared library loader
* was installed */
_dl_if_debug_dprint("\tsearching ldso dir='%s'\n", _dl_ldsopath);
- tpnt1 = search_for_named_library(libname, secure, _dl_ldsopath, rpnt);
+ tpnt1 = search_for_named_library(libname, rflags, _dl_ldsopath, rpnt);
if (tpnt1 != NULL)
return tpnt1;
-
+#endif
/* Lastly, search the standard list of paths for the library.
This list must exactly match the list in uClibc/ldso/util/ldd.c */
_dl_if_debug_dprint("\tsearching full lib path list\n");
- tpnt1 = search_for_named_library(libname, secure,
+ tpnt1 = search_for_named_library(libname, rflags,
UCLIBC_RUNTIME_PREFIX "lib:"
UCLIBC_RUNTIME_PREFIX "usr/lib"
#ifndef __LDSO_CACHE_SUPPORT__
return NULL;
}
+/* Define the _dl_library_offset for the architectures that need it */
+DL_DEF_LIB_OFFSET;
+
+/*
+ * Make a writeable mapping of a segment, regardless of whether PF_W is
+ * set or not.
+ */
+static void *
+map_writeable (int infile, ElfW(Phdr) *ppnt, int piclib, int flags,
+ unsigned long libaddr)
+{
+ int prot_flags = ppnt->p_flags | PF_W;
+ char *status, *retval;
+ char *tryaddr;
+ ssize_t size;
+ unsigned long map_size;
+ char *cpnt;
+ char *piclib2map = NULL;
+
+ if (piclib == 2 &&
+ /* We might be able to avoid this call if memsz doesn't
+ require an additional page, but this would require mmap
+ to always return page-aligned addresses and a whole
+ number of pages allocated. Unfortunately on uClinux
+ may return misaligned addresses and may allocate
+ partial pages, so we may end up doing unnecessary mmap
+ calls.
+
+ This is what we could do if we knew mmap would always
+ return aligned pages:
+
+ ((ppnt->p_vaddr + ppnt->p_filesz + ADDR_ALIGN) &
+ PAGE_ALIGN) < ppnt->p_vaddr + ppnt->p_memsz)
+
+ Instead, we have to do this: */
+ ppnt->p_filesz < ppnt->p_memsz)
+ {
+ piclib2map = (char *)
+ _dl_mmap(0, (ppnt->p_vaddr & ADDR_ALIGN) + ppnt->p_memsz,
+ LXFLAGS(prot_flags), flags | MAP_ANONYMOUS, -1, 0);
+ if (_dl_mmap_check_error(piclib2map))
+ return 0;
+ }
+
+ tryaddr = piclib == 2 ? piclib2map
+ : ((char *) (piclib ? libaddr : DL_GET_LIB_OFFSET()) +
+ (ppnt->p_vaddr & PAGE_ALIGN));
+
+ size = (ppnt->p_vaddr & ADDR_ALIGN) + ppnt->p_filesz;
+
+ /* For !MMU, mmap to fixed address will fail.
+ So instead of desperately call mmap and fail,
+ we set status to MAP_FAILED to save a call
+ to mmap (). */
+#ifndef __ARCH_USE_MMU__
+ if (piclib2map == 0)
+#endif
+ status = (char *) _dl_mmap
+ (tryaddr, size, LXFLAGS(prot_flags),
+ flags | (piclib2map ? MAP_FIXED : 0),
+ infile, ppnt->p_offset & OFFS_ALIGN);
+#ifndef __ARCH_USE_MMU__
+ else
+ status = MAP_FAILED;
+#endif
+#ifdef _DL_PREAD
+ if (_dl_mmap_check_error(status) && piclib2map
+ && (_DL_PREAD (infile, tryaddr, size,
+ ppnt->p_offset & OFFS_ALIGN) == size))
+ status = tryaddr;
+#endif
+ if (_dl_mmap_check_error(status) || (tryaddr && tryaddr != status))
+ return 0;
+
+ if (piclib2map)
+ retval = piclib2map;
+ else
+ retval = status;
+
+ /* Now we want to allocate and zero-out any data from the end
+ of the region we mapped in from the file (filesz) to the
+ end of the loadable segment (memsz). We may need
+ additional pages for memsz, that we map in below, and we
+ can count on the kernel to zero them out, but we have to
+ zero out stuff in the last page that we mapped in from the
+ file. However, we can't assume to have actually obtained
+ full pages from the kernel, since we didn't ask for them,
+ and uClibc may not give us full pages for small
+ allocations. So only zero out up to memsz or the end of
+ the page, whichever comes first. */
+
+ /* CPNT is the beginning of the memsz portion not backed by
+ filesz. */
+ cpnt = (char *) (status + size);
+
+ /* MAP_SIZE is the address of the
+ beginning of the next page. */
+ map_size = (ppnt->p_vaddr + ppnt->p_filesz
+ + ADDR_ALIGN) & PAGE_ALIGN;
+
+ _dl_memset (cpnt, 0,
+ MIN (map_size
+ - (ppnt->p_vaddr
+ + ppnt->p_filesz),
+ ppnt->p_memsz
+ - ppnt->p_filesz));
+
+ if (map_size < ppnt->p_vaddr + ppnt->p_memsz && !piclib2map) {
+ tryaddr = map_size + (char*)(piclib ? libaddr : 0);
+ status = (char *) _dl_mmap(tryaddr,
+ ppnt->p_vaddr + ppnt->p_memsz - map_size,
+ LXFLAGS(prot_flags),
+ flags | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
+ if (_dl_mmap_check_error(status) || tryaddr != status)
+ return NULL;
+ }
+ return retval;
+}
/*
* Read one ELF library into memory, mmap it into the correct locations and
* are required.
*/
-struct elf_resolve *_dl_load_elf_shared_library(int secure,
- struct dyn_elf **rpnt, char *libname)
+struct elf_resolve *_dl_load_elf_shared_library(unsigned rflags,
+ struct dyn_elf **rpnt, const char *libname)
{
ElfW(Ehdr) *epnt;
unsigned long dynamic_addr = 0;
ElfW(Dyn) *dpnt;
struct elf_resolve *tpnt;
ElfW(Phdr) *ppnt;
-#if USE_TLS
+#if defined(USE_TLS) && USE_TLS
ElfW(Phdr) *tlsppnt = NULL;
#endif
char *status, *header;
unsigned long *lpnt;
unsigned long libaddr;
unsigned long minvma = 0xffffffff, maxvma = 0;
+ unsigned int rtld_flags;
int i, flags, piclib, infile;
ElfW(Addr) relro_addr = 0;
size_t relro_size = 0;
_dl_close(infile);
return NULL;
}
- /* If we are in secure mode (i.e. a setu/gid binary using LD_PRELOAD),
+ /* If we are in secure mode (i.e. a setuid/gid binary using LD_PRELOAD),
we don't load the library if it isn't setuid. */
- if (secure) {
+ if (rflags & DL_RESOLVE_SECURE) {
if (!(st.st_mode & S_ISUID)) {
_dl_close(infile);
return NULL;
return tpnt;
}
}
+ if (rflags & DL_RESOLVE_NOLOAD) {
+ _dl_close(infile);
+ return NULL;
+ }
header = _dl_mmap((void *) 0, _dl_pagesize, PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+ MAP_PRIVATE | MAP_ANONYMOUS | MAP_UNINITIALIZED, -1, 0);
if (_dl_mmap_check_error(header)) {
_dl_dprintf(2, "%s:%i: can't map '%s'\n", _dl_progname, __LINE__, libname);
_dl_internal_error_number = LD_ERROR_MMAP_FAILED;
return NULL;
}
- if ((epnt->e_type != ET_DYN) || (epnt->e_machine != MAGIC1
+ if ((epnt->e_type != ET_DYN
+#ifdef __LDSO_STANDALONE_SUPPORT__
+ && epnt->e_type != ET_EXEC
+#endif
+ ) || (epnt->e_machine != MAGIC1
#ifdef MAGIC2
&& epnt->e_machine != MAGIC2
#endif
- ))
+ ))
{
_dl_internal_error_number =
(epnt->e_type != ET_DYN ? LD_ERROR_NOTDYN : LD_ERROR_NOTMAGIC);
if (ppnt->p_type == PT_LOAD) {
/* See if this is a PIC library. */
- if (i == 0 && ppnt->p_vaddr > 0x1000000) {
+ if (minvma == 0xffffffff && ppnt->p_vaddr > 0x1000000) {
piclib = 0;
minvma = ppnt->p_vaddr;
}
maxvma = ppnt->p_vaddr + ppnt->p_memsz;
}
}
- if (ppnt->p_type == PT_TLS)
- {
-#if USE_TLS
+ if (ppnt->p_type == PT_TLS) {
+#if defined(USE_TLS) && USE_TLS
if (ppnt->p_memsz == 0)
/* Nothing to do for an empty segment. */
continue;
ppnt++;
}
+#ifdef __LDSO_STANDALONE_SUPPORT__
+ if (epnt->e_type == ET_EXEC)
+ piclib = 0;
+#endif
+
DL_CHECK_LIB_TYPE (epnt, piclib, _dl_progname, libname);
maxvma = (maxvma + ADDR_ALIGN) & PAGE_ALIGN;
- minvma = minvma & ~0xffffU;
+ minvma = minvma & ~ADDR_ALIGN;
flags = MAP_PRIVATE /*| MAP_DENYWRITE */ ;
- if (!piclib)
- flags |= MAP_FIXED;
if (piclib == 0 || piclib == 1) {
status = (char *) _dl_mmap((char *) (piclib ? 0 : minvma),
maxvma - minvma, PROT_NONE, flags | MAP_ANONYMOUS, -1, 0);
if (_dl_mmap_check_error(status)) {
+ cant_map:
_dl_dprintf(2, "%s:%i: can't map '%s'\n", _dl_progname, __LINE__, libname);
_dl_internal_error_number = LD_ERROR_MMAP_FAILED;
_dl_close(infile);
/* Get the memory to store the library */
ppnt = (ElfW(Phdr) *)(intptr_t) & header[epnt->e_phoff];
- DL_INIT_LOADADDR(lib_loadaddr, libaddr, ppnt, epnt->e_phnum);
+ DL_INIT_LOADADDR(lib_loadaddr, libaddr - minvma, ppnt, epnt->e_phnum);
+ /* Set _dl_library_offset to lib_loadaddr or 0. */
+ DL_SET_LIB_OFFSET(lib_loadaddr);
for (i = 0; i < epnt->e_phnum; i++) {
if (DL_IS_SPECIAL_SEGMENT (epnt, ppnt)) {
char *addr;
addr = DL_MAP_SEGMENT (epnt, ppnt, infile, flags);
- if (addr == NULL)
+ if (addr == NULL) {
+ cant_map1:
+ DL_LOADADDR_UNMAP (lib_loadaddr, maxvma - minvma);
goto cant_map;
+ }
DL_INIT_LOADADDR_HDR (lib_loadaddr, addr, ppnt);
ppnt++;
char *tryaddr;
ssize_t size;
- /* See if this is a PIC library. */
- if (i == 0 && ppnt->p_vaddr > 0x1000000) {
- piclib = 0;
- /* flags |= MAP_FIXED; */
- }
-
if (ppnt->p_flags & PF_W) {
- unsigned long map_size;
- char *cpnt;
- char *piclib2map = 0;
-
- if (piclib == 2 &&
- /* We might be able to avoid this
- call if memsz doesn't require
- an additional page, but this
- would require mmap to always
- return page-aligned addresses
- and a whole number of pages
- allocated. Unfortunately on
- uClinux may return misaligned
- addresses and may allocate
- partial pages, so we may end up
- doing unnecessary mmap calls.
-
- This is what we could do if we
- knew mmap would always return
- aligned pages:
-
- ((ppnt->p_vaddr + ppnt->p_filesz
- + ADDR_ALIGN)
- & PAGE_ALIGN)
- < ppnt->p_vaddr + ppnt->p_memsz)
-
- Instead, we have to do this: */
- ppnt->p_filesz < ppnt->p_memsz)
- {
- piclib2map = (char *)
- _dl_mmap(0, (ppnt->p_vaddr & ADDR_ALIGN)
- + ppnt->p_memsz,
- LXFLAGS(ppnt->p_flags),
- flags | MAP_ANONYMOUS, -1, 0);
- if (_dl_mmap_check_error(piclib2map))
- goto cant_map;
- DL_INIT_LOADADDR_HDR
- (lib_loadaddr, piclib2map
- + (ppnt->p_vaddr & ADDR_ALIGN), ppnt);
- }
-
- tryaddr = piclib == 2 ? piclib2map
- : ((char*) (piclib ? libaddr : 0) +
- (ppnt->p_vaddr & PAGE_ALIGN));
-
- size = (ppnt->p_vaddr & ADDR_ALIGN)
- + ppnt->p_filesz;
-
- /* For !MMU, mmap to fixed address will fail.
- So instead of desperately call mmap and fail,
- we set status to MAP_FAILED to save a call
- to mmap (). */
-#ifndef __ARCH_USE_MMU__
- if (piclib2map == 0)
-#endif
- status = (char *) _dl_mmap
- (tryaddr, size, LXFLAGS(ppnt->p_flags),
- flags | (piclib2map ? MAP_FIXED : 0),
- infile, ppnt->p_offset & OFFS_ALIGN);
-#ifndef __ARCH_USE_MMU__
- else
- status = MAP_FAILED;
-#endif
-#ifdef _DL_PREAD
- if (_dl_mmap_check_error(status) && piclib2map
- && (_DL_PREAD (infile, tryaddr, size,
- ppnt->p_offset & OFFS_ALIGN)
- == size))
- status = tryaddr;
-#endif
- if (_dl_mmap_check_error(status)
- || (tryaddr && tryaddr != status)) {
- cant_map:
- _dl_dprintf(2, "%s:%i: can't map '%s'\n",
- _dl_progname, __LINE__, libname);
- _dl_internal_error_number = LD_ERROR_MMAP_FAILED;
- DL_LOADADDR_UNMAP (lib_loadaddr, maxvma - minvma);
- _dl_close(infile);
- _dl_munmap(header, _dl_pagesize);
- return NULL;
- }
-
- if (! piclib2map) {
- DL_INIT_LOADADDR_HDR
- (lib_loadaddr, status
- + (ppnt->p_vaddr & ADDR_ALIGN), ppnt);
- }
- /* Now we want to allocate and
- zero-out any data from the end of
- the region we mapped in from the
- file (filesz) to the end of the
- loadable segment (memsz). We may
- need additional pages for memsz,
- that we map in below, and we can
- count on the kernel to zero them
- out, but we have to zero out stuff
- in the last page that we mapped in
- from the file. However, we can't
- assume to have actually obtained
- full pages from the kernel, since
- we didn't ask for them, and uClibc
- may not give us full pages for
- small allocations. So only zero
- out up to memsz or the end of the
- page, whichever comes first. */
-
- /* CPNT is the beginning of the memsz
- portion not backed by filesz. */
- cpnt = (char *) (status + size);
-
- /* MAP_SIZE is the address of the
- beginning of the next page. */
- map_size = (ppnt->p_vaddr + ppnt->p_filesz
- + ADDR_ALIGN) & PAGE_ALIGN;
-
-#ifndef MIN
-# define MIN(a,b) ((a) < (b) ? (a) : (b))
-#endif
- _dl_memset (cpnt, 0,
- MIN (map_size
- - (ppnt->p_vaddr
- + ppnt->p_filesz),
- ppnt->p_memsz
- - ppnt->p_filesz));
-
- if (map_size < ppnt->p_vaddr + ppnt->p_memsz
- && !piclib2map) {
- tryaddr = map_size + (char*)(piclib ? libaddr : 0);
- status = (char *) _dl_mmap(tryaddr,
- ppnt->p_vaddr + ppnt->p_memsz - map_size,
- LXFLAGS(ppnt->p_flags), flags | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
- if (_dl_mmap_check_error(status)
- || tryaddr != status)
- goto cant_map;
- }
+ status = map_writeable (infile, ppnt, piclib, flags, libaddr);
+ if (status == NULL)
+ goto cant_map1;
} else {
tryaddr = (piclib == 2 ? 0
: (char *) (ppnt->p_vaddr & PAGE_ALIGN)
- + (piclib ? libaddr : 0));
+ + (piclib ? libaddr : DL_GET_LIB_OFFSET()));
size = (ppnt->p_vaddr & ADDR_ALIGN) + ppnt->p_filesz;
status = (char *) _dl_mmap
(tryaddr, size, LXFLAGS(ppnt->p_flags),
infile, ppnt->p_offset & OFFS_ALIGN);
if (_dl_mmap_check_error(status)
|| (tryaddr && tryaddr != status))
- goto cant_map;
- DL_INIT_LOADADDR_HDR
- (lib_loadaddr, status
- + (ppnt->p_vaddr & ADDR_ALIGN), ppnt);
+ goto cant_map1;
}
+ DL_INIT_LOADADDR_HDR(lib_loadaddr,
+ status + (ppnt->p_vaddr & ADDR_ALIGN),
+ ppnt);
/* if (libaddr == 0 && piclib) {
libaddr = (unsigned long) status;
}
ppnt++;
}
- _dl_close(infile);
- /* For a non-PIC library, the addresses are all absolute */
+ /*
+ * The dynamic_addr must be take into acount lib_loadaddr value, to note
+ * it is zero when the SO has been mapped to the elf's physical addr
+ */
+#ifdef __LDSO_PRELINK_SUPPORT__
+ if (DL_GET_LIB_OFFSET()) {
+#else
if (piclib) {
+#endif
dynamic_addr = (unsigned long) DL_RELOC_ADDR(lib_loadaddr, dynamic_addr);
}
_dl_dprintf(2, "%s: '%s' is missing a dynamic section\n",
_dl_progname, libname);
_dl_munmap(header, _dl_pagesize);
+ _dl_close(infile);
return NULL;
}
dpnt = (ElfW(Dyn) *) dynamic_addr;
_dl_memset(dynamic_info, 0, sizeof(dynamic_info));
- _dl_parse_dynamic_info(dpnt, dynamic_info, NULL, lib_loadaddr);
+ rtld_flags = _dl_parse_dynamic_info(dpnt, dynamic_info, NULL, lib_loadaddr);
/* If the TEXTREL is set, this means that we need to make the pages
writable before we perform relocations. Do this now. They get set
back again later. */
ppnt = (ElfW(Phdr) *)(intptr_t) & header[epnt->e_phoff];
for (i = 0; i < epnt->e_phnum; i++, ppnt++) {
if (ppnt->p_type == PT_LOAD && !(ppnt->p_flags & PF_W)) {
- _dl_mprotect((void *) ((piclib ? libaddr : 0) +
+#ifdef __ARCH_USE_MMU__
+ _dl_mprotect((void *) ((piclib ? libaddr : DL_GET_LIB_OFFSET()) +
(ppnt->p_vaddr & PAGE_ALIGN)),
(ppnt->p_vaddr & ADDR_ALIGN) + (unsigned long) ppnt->p_filesz,
PROT_READ | PROT_WRITE | PROT_EXEC);
+#else
+ void *new_addr;
+ new_addr = map_writeable (infile, ppnt, piclib, flags, libaddr);
+ if (!new_addr) {
+ _dl_dprintf(_dl_debug_file, "Can't modify %s's text section.",
+ libname);
+ _dl_exit(1);
+ }
+ DL_UPDATE_LOADADDR_HDR(lib_loadaddr,
+ new_addr + (ppnt->p_vaddr & ADDR_ALIGN),
+ ppnt);
+ /* This has invalidated all pointers into the previously readonly segment.
+ Update any them to point into the remapped segment. */
+ _dl_parse_dynamic_info(dpnt, dynamic_info, NULL, lib_loadaddr);
+#endif
}
}
#else
- _dl_dprintf(_dl_debug_file, "Can't modify %s's text section."
+ _dl_dprintf(2, "Can't modify %s's text section."
" Use GCC option -fPIC for shared objects, please.\n",
libname);
_dl_exit(1);
#endif
}
+ _dl_close(infile);
+
tpnt = _dl_add_elf_hash_table(libname, lib_loadaddr, dynamic_info,
dynamic_addr, 0);
+ tpnt->mapaddr = libaddr;
tpnt->relro_addr = relro_addr;
tpnt->relro_size = relro_size;
tpnt->st_dev = st.st_dev;
tpnt->st_ino = st.st_ino;
- tpnt->ppnt = (ElfW(Phdr) *) DL_RELOC_ADDR(tpnt->loadaddr, epnt->e_phoff);
+ tpnt->ppnt = (ElfW(Phdr) *)
+ DL_RELOC_ADDR(DL_GET_RUN_ADDR(tpnt->loadaddr, tpnt->mapaddr),
+ epnt->e_phoff);
tpnt->n_phent = epnt->e_phnum;
+ tpnt->rtld_flags |= rtld_flags;
+#ifdef __LDSO_STANDALONE_SUPPORT__
+ tpnt->l_entry = epnt->e_entry;
+#endif
-#if USE_TLS
- if (tlsppnt)
- {
+#if defined(USE_TLS) && USE_TLS
+ if (tlsppnt) {
_dl_debug_early("Found TLS header for %s\n", libname);
-#if NO_TLS_OFFSET != 0
+# if NO_TLS_OFFSET != 0
tpnt->l_tls_offset = NO_TLS_OFFSET;
-#endif
+# endif
tpnt->l_tls_blocksize = tlsppnt->p_memsz;
tpnt->l_tls_align = tlsppnt->p_align;
if (tlsppnt->p_align == 0)
tpnt->l_tls_modid = _dl_next_tls_modid ();
/* We know the load address, so add it to the offset. */
+#ifdef __LDSO_STANDALONE_SUPPORT__
+ if ((tpnt->l_tls_initimage != NULL) && piclib)
+#else
if (tpnt->l_tls_initimage != NULL)
+#endif
{
- unsigned int tmp = (unsigned int) tpnt->l_tls_initimage;
+# ifdef __SUPPORT_LD_DEBUG_EARLY__
+ char *tmp = (char *) tpnt->l_tls_initimage;
tpnt->l_tls_initimage = (char *) tlsppnt->p_vaddr + tpnt->loadaddr;
_dl_debug_early("Relocated TLS initial image from %x to %x (size = %x)\n", tmp, tpnt->l_tls_initimage, tpnt->l_tls_initimage_size);
tmp = 0;
+# else
+ tpnt->l_tls_initimage = (char *) tlsppnt->p_vaddr + tpnt->loadaddr;
+# endif
}
}
#endif
/*
* Add this object into the symbol chain
*/
- if (*rpnt) {
+ if (*rpnt
+#ifdef __LDSO_STANDALONE_SUPPORT__
+ /* Do not create a new chain entry for the main executable */
+ && (*rpnt)->dyn
+#endif
+ ) {
(*rpnt)->next = _dl_malloc(sizeof(struct dyn_elf));
_dl_memset((*rpnt)->next, 0, sizeof(struct dyn_elf));
(*rpnt)->next->prev = (*rpnt);
}
#endif
(*rpnt)->dyn = tpnt;
- tpnt->symbol_scope = _dl_symbol_tables;
tpnt->usage_count++;
+#ifdef __LDSO_STANDALONE_SUPPORT__
+ tpnt->libtype = (epnt->e_type == ET_DYN) ? elf_lib : elf_executable;
+#else
tpnt->libtype = elf_lib;
+#endif
/*
* OK, the next thing we need to do is to insert the dynamic linker into
INIT_GOT(lpnt, tpnt);
}
+#ifdef __DSBT__
+ /* Handle DSBT initialization */
+ {
+ struct elf_resolve *t, *ref;
+ int idx = tpnt->dsbt_index;
+ void **dsbt = tpnt->dsbt_table;
+
+ /*
+ * It is okay (required actually) to have zero idx for an executable.
+ * This is the case when running ldso standalone and the program
+ * is being mapped in via _dl_load_shared_library().
+ */
+ if (idx == 0 && tpnt->libtype != elf_executable) {
+ if (!dynamic_info[DT_TEXTREL]) {
+ /* This DSO has not been assigned an index. */
+ _dl_dprintf(2, "%s: '%s' is missing a dsbt index assignment!\n",
+ _dl_progname, libname);
+ _dl_exit(1);
+ }
+ /* Find a dsbt table from another module. */
+ ref = NULL;
+ for (t = _dl_loaded_modules; t; t = t->next) {
+ if (ref == NULL && t != tpnt) {
+ ref = t;
+ break;
+ }
+ }
+ idx = tpnt->dsbt_size;
+ while (idx-- > 0)
+ if (!ref || ref->dsbt_table[idx] == NULL)
+ break;
+ if (idx <= 0) {
+ _dl_dprintf(2, "%s: '%s' caused DSBT table overflow!\n",
+ _dl_progname, libname);
+ _dl_exit(1);
+ }
+ _dl_if_debug_dprint("\n\tfile='%s'; assigned index %d\n",
+ libname, idx);
+ tpnt->dsbt_index = idx;
+ }
+
+ /* make sure index is not already used */
+ if (_dl_ldso_dsbt[idx]) {
+ struct elf_resolve *dup;
+ const char *dup_name;
+
+ for (dup = _dl_loaded_modules; dup; dup = dup->next)
+ if (dup != tpnt && dup->dsbt_index == idx)
+ break;
+ if (dup)
+ dup_name = dup->libname;
+ else if (idx == 1)
+ dup_name = "runtime linker";
+ else
+ dup_name = "unknown library";
+ _dl_dprintf(2, "%s: '%s' dsbt index %d already used by %s!\n",
+ _dl_progname, libname, idx, dup_name);
+ _dl_exit(1);
+ }
+
+ /*
+ * Setup dsbt slot for this module in dsbt of all modules.
+ */
+ for (t = _dl_loaded_modules; t; t = t->next)
+ t->dsbt_table[idx] = dsbt;
+ _dl_ldso_dsbt[idx] = dsbt;
+ _dl_memcpy(dsbt, _dl_ldso_dsbt,
+ tpnt->dsbt_size * sizeof(tpnt->dsbt_table[0]));
+ }
+#endif
_dl_if_debug_dprint("\n\tfile='%s'; generating link map\n", libname);
_dl_if_debug_dprint("\t\tdynamic: %x base: %x\n", dynamic_addr, DL_LOADADDR_BASE(lib_loadaddr));
_dl_if_debug_dprint("\t\t entry: %x phdr: %x phnum: %x\n\n",
}
/* now_flag must be RTLD_NOW or zero */
-int _dl_fixup(struct dyn_elf *rpnt, int now_flag)
+int _dl_fixup(struct dyn_elf *rpnt, struct r_scope_elem *scope, int now_flag)
{
int goof = 0;
struct elf_resolve *tpnt;
ElfW(Addr) reloc_addr;
if (rpnt->next)
- goof = _dl_fixup(rpnt->next, now_flag);
+ goof = _dl_fixup(rpnt->next, scope, now_flag);
if (goof)
return goof;
tpnt = rpnt->dyn;
relative_count = tpnt->dynamic_info[DT_RELCONT_IDX];
if (relative_count) { /* Optimize the XX_RELATIVE relocations if possible */
reloc_size -= relative_count * sizeof(ELF_RELOC);
- elf_machine_relative(tpnt->loadaddr, reloc_addr, relative_count);
+#ifdef __LDSO_PRELINK_SUPPORT__
+ if (tpnt->loadaddr || (!tpnt->dynamic_info[DT_GNU_PRELINKED_IDX]))
+#endif
+ elf_machine_relative(tpnt->loadaddr, reloc_addr, relative_count);
reloc_addr += relative_count * sizeof(ELF_RELOC);
}
- goof += _dl_parse_relocation_information(rpnt,
+ goof += _dl_parse_relocation_information(rpnt, scope,
reloc_addr,
reloc_size);
tpnt->init_flag |= RELOCS_DONE;
tpnt->dynamic_info[DT_JMPREL],
tpnt->dynamic_info [DT_PLTRELSZ]);
} else {
- goof += _dl_parse_relocation_information(rpnt,
+ goof += _dl_parse_relocation_information(rpnt, scope,
tpnt->dynamic_info[DT_JMPREL],
tpnt->dynamic_info[DT_PLTRELSZ]);
}
}
#if 0
-/* _dl_add_to_slotinfo is called by init_tls() for initial DSO
+/* _dl_add_to_slotinfo is called by init_tls() for initial DSO
or by dlopen() for dynamically loaded DSO. */
-#if USE_TLS
+#if defined(USE_TLS) && USE_TLS
/* Add object to slot information data if necessasy. */
if (tpnt->l_tls_blocksize != 0 && tls_init_tp_called)
_dl_add_to_slotinfo ((struct link_map *) tpnt);
return goof;
}
+#ifdef IS_IN_rtld
/* Minimal printf which handles only %s, %d, and %x */
void _dl_dprintf(int fd, const char *fmt, ...)
{
#endif
va_list args;
char *start, *ptr, *string;
- static char *buf;
+ char *buf;
if (!fmt)
return;
break;
}
case 'x':
- case 'X':
+ case 'p':
{
char tmp[22];
#if __WORDSIZE > 32
_dl_strcpy(retval, string);
return retval;
}
+#endif
-void _dl_parse_dynamic_info(ElfW(Dyn) *dpnt, unsigned long dynamic_info[],
- void *debug_addr, DL_LOADADDR_TYPE load_off)
+unsigned int _dl_parse_dynamic_info(ElfW(Dyn) *dpnt, unsigned long dynamic_info[],
+ void *debug_addr, DL_LOADADDR_TYPE load_off)
{
- __dl_parse_dynamic_info(dpnt, dynamic_info, debug_addr, load_off);
+ return __dl_parse_dynamic_info(dpnt, dynamic_info, debug_addr, load_off);
}
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