diff options
Diffstat (limited to 'elf/dl-load.c')
| -rw-r--r-- | elf/dl-load.c | 98 |
1 files changed, 41 insertions, 57 deletions
diff --git a/elf/dl-load.c b/elf/dl-load.c index b66e7fee1d..cd568d2261 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -111,18 +111,6 @@ struct filebuf char buf[1024]; }; -size_t _dl_pagesize; - -unsigned int _dl_osversion; - -int _dl_clktck; - -extern const char *_dl_platform; -extern size_t _dl_platformlen; - -/* The object to be initialized first. */ -struct link_map *_dl_initfirst; - /* This is the decomposed LD_LIBRARY_PATH search path. */ static struct r_search_path_struct env_path_list; @@ -240,7 +228,7 @@ _dl_dst_substitute (struct link_map *l, const char *name, char *result, repl = l->l_origin; else if ((len = is_dst (start, name + 1, "{PLATFORM}", 10, is_path, 0)) != 0) - repl = _dl_platform; + repl = GL(dl_platform); if (repl != NULL && repl != (const char *) -1) { @@ -344,12 +332,6 @@ add_name_to_object (struct link_map *l, const char *name) lastp->next = newname; } -/* All known directories in sorted order. */ -struct r_search_path_elem *_dl_all_dirs; - -/* All directories after startup. */ -struct r_search_path_elem *_dl_init_all_dirs; - /* Standard search directories. */ static struct r_search_path_struct rtld_search_dirs; @@ -413,7 +395,7 @@ fillin_rpath (char *rpath, struct r_search_path_elem **result, const char *sep, } /* See if this directory is already known. */ - for (dirp = _dl_all_dirs; dirp != NULL; dirp = dirp->next) + for (dirp = GL(dl_all_dirs); dirp != NULL; dirp = dirp->next) if (dirp->dirnamelen == len && memcmp (cp, dirp->dirname, len) == 0) break; @@ -460,13 +442,13 @@ fillin_rpath (char *rpath, struct r_search_path_elem **result, const char *sep, dirp->what = what; if (__builtin_expect (where != NULL, 1)) dirp->where = memcpy ((char *) dirp + sizeof (*dirp) + len + 1 - + ncapstr * sizeof (enum r_dir_status), + + (ncapstr * sizeof (enum r_dir_status)), where, where_len); else dirp->where = NULL; - dirp->next = _dl_all_dirs; - _dl_all_dirs = dirp; + dirp->next = GL(dl_all_dirs); + GL(dl_all_dirs) = dirp; /* Put it in the result array. */ result[nelems++] = dirp; @@ -496,13 +478,14 @@ decompose_rpath (struct r_search_path_struct *sps, /* First see whether we must forget the RUNPATH and RPATH from this object. */ - if (__builtin_expect (_dl_inhibit_rpath != NULL, 0) && !__libc_enable_secure) + if (__builtin_expect (GL(dl_inhibit_rpath) != NULL, 0) + && !__libc_enable_secure) { - const char *found = strstr (_dl_inhibit_rpath, where); + const char *found = strstr (GL(dl_inhibit_rpath), where); if (found != NULL) { size_t len = strlen (where); - if ((found == _dl_inhibit_rpath || found[-1] == ':') + if ((found == GL(dl_inhibit_rpath) || found[-1] == ':') && (found[len] == '\0' || found[len] == ':')) { /* This object is on the list of objects for which the @@ -579,7 +562,7 @@ _dl_init_paths (const char *llp) directories addressed by the LD_LIBRARY_PATH environment variable. */ /* Get the capabilities. */ - capstr = _dl_important_hwcaps (_dl_platform, _dl_platformlen, + capstr = _dl_important_hwcaps (GL(dl_platform), GL(dl_platformlen), &ncapstr, &max_capstrlen); /* First set up the rest of the default search directory entries. */ @@ -606,7 +589,7 @@ _dl_init_paths (const char *llp) } rtld_search_dirs.malloced = 0; - pelem = _dl_all_dirs = rtld_search_dirs.dirs[0]; + pelem = GL(dl_all_dirs) = rtld_search_dirs.dirs[0]; strp = system_dirs; idx = 0; @@ -639,7 +622,7 @@ _dl_init_paths (const char *llp) #ifdef SHARED /* This points to the map of the main object. */ - l = _dl_loaded; + l = GL(dl_loaded); if (l != NULL) { assert (l->l_type != lt_loaded); @@ -715,7 +698,7 @@ _dl_init_paths (const char *llp) env_path_list.dirs = (void *) -1; /* Remember the last search directory added at startup. */ - _dl_init_all_dirs = _dl_all_dirs; + GL(dl_init_all_dirs) = GL(dl_all_dirs); } @@ -746,11 +729,11 @@ lose (int code, int fd, const char *name, char *realname, struct link_map *l, #ifndef SHARED if (l->l_prev == NULL) /* No other module loaded. */ - _dl_loaded = NULL; + GL(dl_loaded) = NULL; else #endif l->l_prev->l_next = NULL; - --_dl_nloaded; + --GL(dl_nloaded); free (l); } free (realname); @@ -791,7 +774,7 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp, } /* Look again to see if the real name matched another already loaded. */ - for (l = _dl_loaded; l; l = l->l_next) + for (l = GL(dl_loaded); l; l = l->l_next) if (l->l_ino == st.st_ino && l->l_dev == st.st_dev) { /* The object is already loaded. @@ -812,7 +795,7 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp, return NULL; /* Print debugging message. */ - if (__builtin_expect (_dl_debug_mask & DL_DEBUG_FILES, 0)) + if (__builtin_expect (GL(dl_debug_mask) & DL_DEBUG_FILES, 0)) _dl_debug_printf ("file=%s; generating link map\n", name); /* This is the ELF header. We read it in `open_verify'. */ @@ -892,7 +875,7 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp, case PT_LOAD: /* A load command tells us to map in part of the file. We record the load commands and process them all later. */ - if ((ph->p_align & (_dl_pagesize - 1)) != 0) + if ((ph->p_align & (GL(dl_pagesize) - 1)) != 0) { errstring = N_("ELF load command alignment not page-aligned"); goto call_lose; @@ -907,8 +890,8 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp, { struct loadcmd *c = &loadcmds[nloadcmds++]; c->mapstart = ph->p_vaddr & ~(ph->p_align - 1); - c->mapend = ((ph->p_vaddr + ph->p_filesz + _dl_pagesize - 1) - & ~(_dl_pagesize - 1)); + c->mapend = ((ph->p_vaddr + ph->p_filesz + GL(dl_pagesize) - 1) + & ~(GL(dl_pagesize) - 1)); c->dataend = ph->p_vaddr + ph->p_filesz; c->allocend = ph->p_vaddr + ph->p_memsz; c->mapoff = ph->p_offset & ~(ph->p_align - 1); @@ -1023,7 +1006,8 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp, zero = l->l_addr + c->dataend; zeroend = l->l_addr + c->allocend; - zeropage = (zero + _dl_pagesize - 1) & ~(_dl_pagesize - 1); + zeropage = ((zero + GL(dl_pagesize) - 1) + & ~(GL(dl_pagesize) - 1)); if (zeroend < zeropage) /* All the extra data is in the last page of the segment. @@ -1036,8 +1020,8 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp, if ((c->prot & PROT_WRITE) == 0) { /* Dag nab it. */ - if (__mprotect ((caddr_t) (zero & ~(_dl_pagesize - 1)), - _dl_pagesize, c->prot|PROT_WRITE) < 0) + if (__mprotect ((caddr_t) (zero & ~(GL(dl_pagesize) - 1)), + GL(dl_pagesize), c->prot|PROT_WRITE) < 0) { errstring = N_("cannot change memory protections"); goto call_lose_errno; @@ -1045,8 +1029,8 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp, } memset ((void *) zero, '\0', zeropage - zero); if ((c->prot & PROT_WRITE) == 0) - __mprotect ((caddr_t) (zero & ~(_dl_pagesize - 1)), - _dl_pagesize, c->prot); + __mprotect ((caddr_t) (zero & ~(GL(dl_pagesize) - 1)), + GL(dl_pagesize), c->prot); } if (zeroend > zeropage) @@ -1110,7 +1094,7 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp, l->l_entry += l->l_addr; - if (__builtin_expect (_dl_debug_mask & DL_DEBUG_FILES, 0)) + if (__builtin_expect (GL(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", (int) sizeof (void *) * 2, (unsigned long int) l->l_ld, @@ -1176,7 +1160,7 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp, /* Remember whether this object must be initialized first. */ if (l->l_flags_1 & DF_1_INITFIRST) - _dl_initfirst = l; + GL(dl_initfirst) = l; /* Finally the file information. */ l->l_dev = st.st_dev; @@ -1397,7 +1381,7 @@ open_verify (const char *name, struct filebuf *fbp) + (abi_note[6] & 0xff) * 256 + (abi_note[7] & 0xff); if (abi_note[4] != __ABI_TAG_OS - || (_dl_osversion && _dl_osversion < osversion)) + || (GL(dl_osversion) && GL(dl_osversion) < osversion)) { close_and_out: __close (fd); @@ -1442,7 +1426,7 @@ open_path (const char *name, size_t namelen, int preloaded, /* If we are debugging the search for libraries print the path now if it hasn't happened now. */ - if (__builtin_expect (_dl_debug_mask & DL_DEBUG_LIBS, 0) + if (__builtin_expect (GL(dl_debug_mask) & DL_DEBUG_LIBS, 0) && current_what != this_dir->what) { current_what = this_dir->what; @@ -1457,13 +1441,13 @@ open_path (const char *name, size_t namelen, int preloaded, continue; buflen = - ((char *) __mempcpy (__mempcpy (edp, - capstr[cnt].str, capstr[cnt].len), + ((char *) __mempcpy (__mempcpy (edp, capstr[cnt].str, + capstr[cnt].len), name, namelen) - buf); /* Print name we try if this is wanted. */ - if (__builtin_expect (_dl_debug_mask & DL_DEBUG_LIBS, 0)) + if (__builtin_expect (GL(dl_debug_mask) & DL_DEBUG_LIBS, 0)) _dl_debug_printf (" trying file=%s\n", buf); fd = open_verify (buf, fbp); @@ -1566,7 +1550,7 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded, struct filebuf fb; /* Look for this name among those already loaded. */ - for (l = _dl_loaded; l; l = l->l_next) + for (l = GL(dl_loaded); l; l = l->l_next) { /* If the requested name matches the soname of a loaded object, use that object. Elide this check for names that have not @@ -1596,7 +1580,7 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded, } /* Display information if we are debugging. */ - if (__builtin_expect (_dl_debug_mask & DL_DEBUG_FILES, 0) && loader != NULL) + if (__builtin_expect (GL(dl_debug_mask) & DL_DEBUG_FILES, 0) && loader != NULL) _dl_debug_printf ("\nfile=%s; needed by %s\n", name, loader->l_name[0] ? loader->l_name : _dl_argv[0]); @@ -1606,7 +1590,7 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded, size_t namelen = strlen (name) + 1; - if (__builtin_expect (_dl_debug_mask & DL_DEBUG_LIBS, 0)) + if (__builtin_expect (GL(dl_debug_mask) & DL_DEBUG_LIBS, 0)) _dl_debug_printf ("find library=%s; searching\n", name); fd = -1; @@ -1644,7 +1628,7 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded, /* If dynamically linked, try the DT_RPATH of the executable itself. */ - l = _dl_loaded; + l = GL(dl_loaded); if (fd == -1 && l && l->l_type != lt_loaded && l != loader && l->l_rpath_dirs.dirs != (void *) -1) fd = open_path (name, namelen, preloaded, &l->l_rpath_dirs, @@ -1698,7 +1682,7 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded, if (cached != NULL) { #ifdef SHARED - l = loader ?: _dl_loaded; + l = loader ?: GL(dl_loaded); #else l = loader; #endif @@ -1748,14 +1732,14 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded, /* Finally, try the default path. */ if (fd == -1 - && ((l = loader ?: _dl_loaded) == NULL + && ((l = loader ?: GL(dl_loaded)) == NULL || __builtin_expect (!(l->l_flags_1 & DF_1_NODEFLIB), 1)) && rtld_search_dirs.dirs != (void *) -1) fd = open_path (name, namelen, preloaded, &rtld_search_dirs, &realname, &fb); /* Add another newline when we a tracing the library loading. */ - if (__builtin_expect (_dl_debug_mask & DL_DEBUG_LIBS, 0)) + if (__builtin_expect (GL(dl_debug_mask) & DL_DEBUG_LIBS, 0)) _dl_debug_printf ("\n"); } else @@ -1777,7 +1761,7 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded, if (__builtin_expect (fd, 0) == -1) { if (trace_mode - && __builtin_expect (_dl_debug_mask & DL_DEBUG_PRELINK, 0) == 0) + && __builtin_expect (GL(dl_debug_mask) & DL_DEBUG_PRELINK, 0) == 0) { /* We haven't found an appropriate library. But since we are only interested in the list of libraries this isn't |