diff options
Diffstat (limited to 'elf/ldconfig.c')
| -rw-r--r-- | elf/ldconfig.c | 158 |
1 files changed, 121 insertions, 37 deletions
diff --git a/elf/ldconfig.c b/elf/ldconfig.c index aab52b7..18bac78 100644 --- a/elf/ldconfig.c +++ b/elf/ldconfig.c @@ -1,21 +1,19 @@ -/* Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc. +/* Copyright (C) 1999-2004, 2005, 2006, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Andreas Jaeger <aj@suse.de>, 1999. - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License version 2 as + published by the Free Software Foundation. - The GNU C Library is distributed in the hope that it will be useful, + This program 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 - Lesser General Public License for more details. + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #define PROCINFO_CLASS static #include <alloca.h> @@ -39,10 +37,16 @@ #include <glob.h> #include <libgen.h> -#include "ldconfig.h" -#include "dl-cache.h" +#include <ldconfig.h> +#include <dl-cache.h> -#include "dl-procinfo.h" +#include <dl-procinfo.h> + +#ifdef _DL_FIRST_PLATFORM +# define _DL_FIRST_EXTRA (_DL_FIRST_PLATFORM + _DL_PLATFORMS_COUNT) +#else +# define _DL_FIRST_EXTRA _DL_HWCAP_COUNT +#endif #ifndef LD_SO_CONF # define LD_SO_CONF SYSCONFDIR "/ld.so.conf" @@ -115,6 +119,9 @@ static const char *config_file; /* Mask to use for important hardware capabilities. */ static unsigned long int hwcap_mask = HWCAP_IMPORTANT; +/* Configuration-defined capabilities defined in kernel vDSOs. */ +static const char *hwcap_extra[64 - _DL_FIRST_EXTRA]; + /* Name and version of program. */ static void print_version (FILE *stream, struct argp_state *state); void (*argp_program_version_hook) (FILE *, struct argp_state *) @@ -165,10 +172,10 @@ is_hwcap_platform (const char *name) if (hwcap_idx != -1) return 1; -#ifdef USE_TLS - if (strcmp (name, "tls") == 0) - return 1; -#endif + for (hwcap_idx = _DL_FIRST_EXTRA; hwcap_idx < 64; ++hwcap_idx) + if (hwcap_extra[hwcap_idx - _DL_FIRST_EXTRA] != NULL + && !strcmp (name, hwcap_extra[hwcap_idx - _DL_FIRST_EXTRA])) + return 1; return 0; } @@ -203,11 +210,11 @@ path_hwcap (const char *path) h = _dl_string_platform (ptr + 1); if (h == (uint64_t) -1) { -#ifdef USE_TLS - if (strcmp (ptr + 1, "tls") == 0) - h = 63; - else -#endif + for (h = _DL_FIRST_EXTRA; h < 64; ++h) + if (hwcap_extra[h - _DL_FIRST_EXTRA] != NULL + && !strcmp (ptr + 1, hwcap_extra[h - _DL_FIRST_EXTRA])) + break; + if (h == 64) break; } } @@ -279,7 +286,7 @@ print_version (FILE *stream, struct argp_state *state) Copyright (C) %s Free Software Foundation, Inc.\n\ This is free software; see the source for copying conditions. There is NO\n\ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\ -"), "2004"); +"), "2006"); fprintf (stream, gettext ("Written by %s.\n"), "Andreas Jaeger"); } @@ -636,7 +643,7 @@ search_dir (const struct dir_entry *entry) if (opt_verbose) { if (hwcap != 0) - printf ("%s: (hwcap: 0x%" PRIx64 ")\n", entry->path, hwcap); + printf ("%s: (hwcap: %#.16" PRIx64 ")\n", entry->path, hwcap); else printf ("%s:\n", entry->path); } @@ -686,10 +693,23 @@ search_dir (const struct dir_entry *entry) #endif !is_hwcap_platform (direntry->d_name))) continue; - len = strlen (entry->path) + strlen (direntry->d_name); + len = strlen (direntry->d_name); + /* Skip temporary files created by the prelink program. Files with + names like these are never really DSOs we want to look at. */ + if (len >= sizeof (".#prelink#") - 1) + { + if (strcmp (direntry->d_name + len - sizeof (".#prelink#") + 1, + ".#prelink#") == 0) + continue; + if (len >= sizeof (".#prelink#.XXXXXX") - 1 + && memcmp (direntry->d_name + len - sizeof (".#prelink#.XXXXXX") + + 1, ".#prelink#.", sizeof (".#prelink#.") - 1) == 0) + continue; + } + len += strlen (entry->path) + 2; if (len > file_name_len) { - file_name_len = len + 1; + file_name_len = len; file_name = alloca (file_name_len); if (!opt_chroot) real_file_name = file_name; @@ -697,10 +717,10 @@ search_dir (const struct dir_entry *entry) sprintf (file_name, "%s/%s", entry->path, direntry->d_name); if (opt_chroot) { - len = strlen (dir_name) + strlen (direntry->d_name); + len = strlen (dir_name) + strlen (direntry->d_name) + 2; if (len > real_file_name_len) { - real_file_name_len = len + 1; + real_file_name_len = len; real_file_name = alloca (real_file_name_len); } sprintf (real_file_name, "%s/%s", dir_name, direntry->d_name); @@ -944,17 +964,19 @@ search_dirs (void) static void parse_conf_include (const char *config_file, unsigned int lineno, - bool do_chroot, const char *pattern); + const char *prefix, bool do_chroot, + const char *pattern); /* Parse configuration file. */ static void -parse_conf (const char *filename, bool do_chroot) +parse_conf (const char *filename, const char *prefix, bool do_chroot) { FILE *file = NULL; char *line = NULL; const char *canon; size_t len = 0; unsigned int lineno; + size_t prefix_len = prefix ? strlen (prefix) : 0; if (do_chroot && opt_chroot) { @@ -1015,7 +1037,61 @@ parse_conf (const char *filename, bool do_chroot) cp += 8; while ((dir = strsep (&cp, " \t")) != NULL) if (dir[0] != '\0') - parse_conf_include (filename, lineno, do_chroot, dir); + parse_conf_include (filename, lineno, prefix, do_chroot, dir); + } + else if (prefix != NULL) + { + size_t cp_len = strlen (cp); + char new_cp [prefix_len + cp_len + 1]; + memcpy (mempcpy (new_cp, prefix, prefix_len), cp, cp_len + 1); + add_dir (new_cp); + } + else if (!strncasecmp (cp, "hwcap", 5) && isblank (cp[5])) + { + cp += 6; + char *p, *name = NULL; + unsigned long int n = strtoul (cp, &cp, 0); + if (cp != NULL && isblank (*cp)) + while ((p = strsep (&cp, " \t")) != NULL) + if (p[0] != '\0') + { + if (name == NULL) + name = p; + else + { + name = NULL; + break; + } + } + if (name == NULL) + { + error (EXIT_FAILURE, 0, _("%s:%u: bad syntax in hwcap line"), + filename, lineno); + break; + } + if (n >= (64 - _DL_FIRST_EXTRA)) + error (EXIT_FAILURE, 0, + _("%s:%u: hwcap index %lu above maximum %u"), + filename, lineno, n, 64 - _DL_FIRST_EXTRA - 1); + if (hwcap_extra[n] == NULL) + { + for (unsigned long int h = 0; h < (64 - _DL_FIRST_EXTRA); ++h) + if (hwcap_extra[h] != NULL && !strcmp (name, hwcap_extra[h])) + error (EXIT_FAILURE, 0, + _("%s:%u: hwcap index %lu already defined as %s"), + filename, lineno, h, name); + hwcap_extra[n] = xstrdup (name); + } + else + { + if (strcmp (name, hwcap_extra[n])) + error (EXIT_FAILURE, 0, + _("%s:%u: hwcap index %lu already defined as %s"), + filename, lineno, n, hwcap_extra[n]); + if (opt_verbose) + error (0, 0, _("%s:%u: duplicate hwcap %lu %s"), + filename, lineno, n, name); + } } else add_dir (cp); @@ -1031,7 +1107,7 @@ parse_conf (const char *filename, bool do_chroot) config files to read. */ static void parse_conf_include (const char *config_file, unsigned int lineno, - bool do_chroot, const char *pattern) + const char *prefix, bool do_chroot, const char *pattern) { if (opt_chroot && pattern[0] != '/') error (EXIT_FAILURE, 0, @@ -1061,7 +1137,7 @@ parse_conf_include (const char *config_file, unsigned int lineno, { case 0: for (size_t i = 0; i < gl.gl_pathc; ++i) - parse_conf (gl.gl_pathv[i], false); + parse_conf (gl.gl_pathv[i], prefix, false); globfree64 (&gl); break; @@ -1101,6 +1177,8 @@ main (int argc, char **argv) { int remaining; + arch_startup (argc, argv); + /* Parse and process arguments. */ argp_parse (&argp, argc, argv, 0, &remaining, NULL); @@ -1118,12 +1196,16 @@ main (int argc, char **argv) add_dir (argv[i]); } +#ifdef USE_TLS + hwcap_extra[63 - _DL_FIRST_EXTRA] = "tls"; +#endif + set_hwcap (); if (opt_chroot) { /* Normalize the path a bit, we might need it for printing later. */ - char *endp = strchr (opt_chroot, '\0'); + char *endp = rawmemchr (opt_chroot, '\0'); while (endp > opt_chroot && endp[-1] == '/') --endp; *endp = '\0'; @@ -1209,12 +1291,14 @@ main (int argc, char **argv) if (!opt_only_cline) { - parse_conf (config_file, true); + parse_conf (config_file, NULL, true); /* Always add the standard search paths. */ add_system_dir (SLIBDIR); if (strcmp (SLIBDIR, LIBDIR)) add_system_dir (LIBDIR); + + add_arch_dirs (config_file); } search_dirs (); |