forked from rpms/glibc
153 lines
5.1 KiB
Diff
153 lines
5.1 KiB
Diff
commit db07fae8250401adb2b97ab3e53d41da2a6bd767
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Thu Nov 26 16:59:44 2020 +0100
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elf: Introduce enum opt_format in the ldconfig implementation
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Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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diff --git a/elf/cache.c b/elf/cache.c
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index c4cd825c30e00e8e..edcdd4b7cc1a6a0b 100644
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--- a/elf/cache.c
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+++ b/elf/cache.c
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@@ -321,13 +321,13 @@ save_cache (const char *cache_name)
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struct cache_file *file_entries = NULL;
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size_t file_entries_size = 0;
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- if (opt_format != 2)
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+ if (opt_format != opt_format_new)
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{
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/* struct cache_file_new is 64-bit aligned on some arches while
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only 32-bit aligned on other arches. Duplicate last old
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cache entry so that new cache in ld.so.cache can be used by
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both. */
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- if (opt_format != 0)
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+ if (opt_format != opt_format_old)
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cache_entry_old_count = (cache_entry_old_count + 1) & ~1;
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/* And the list of all entries in the old format. */
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@@ -345,7 +345,7 @@ save_cache (const char *cache_name)
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struct cache_file_new *file_entries_new = NULL;
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size_t file_entries_new_size = 0;
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- if (opt_format != 0)
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+ if (opt_format != opt_format_old)
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{
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/* And the list of all entries in the new format. */
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file_entries_new_size = sizeof (struct cache_file_new)
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@@ -370,7 +370,7 @@ save_cache (const char *cache_name)
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table, we have to adjust all string indices for this so that
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old libc5/glibc 2 dynamic linkers just ignore them. */
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unsigned int str_offset;
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- if (opt_format != 0)
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+ if (opt_format != opt_format_old)
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str_offset = file_entries_new_size;
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else
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str_offset = 0;
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@@ -385,13 +385,13 @@ save_cache (const char *cache_name)
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entry = entry->next, ++idx_new)
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{
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/* First the library. */
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- if (opt_format != 2 && entry->hwcap == 0)
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+ if (opt_format != opt_format_new && entry->hwcap == 0)
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{
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file_entries->libs[idx_old].flags = entry->flags;
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/* XXX: Actually we can optimize here and remove duplicates. */
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file_entries->libs[idx_old].key = str_offset + pad;
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}
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- if (opt_format != 0)
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+ if (opt_format != opt_format_old)
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{
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/* We could subtract file_entries_new_size from str_offset -
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not doing so makes the code easier, the string table
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@@ -407,9 +407,9 @@ save_cache (const char *cache_name)
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str = mempcpy (str, entry->lib, len);
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str_offset += len;
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/* Then the path. */
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- if (opt_format != 2 && entry->hwcap == 0)
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+ if (opt_format != opt_format_new && entry->hwcap == 0)
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file_entries->libs[idx_old].value = str_offset + pad;
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- if (opt_format != 0)
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+ if (opt_format != opt_format_old)
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file_entries_new->libs[idx_new].value = str_offset;
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len = strlen (entry->path) + 1;
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str = mempcpy (str, entry->path, len);
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@@ -420,7 +420,7 @@ save_cache (const char *cache_name)
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}
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/* Duplicate last old cache entry if needed. */
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- if (opt_format != 2
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+ if (opt_format != opt_format_new
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&& idx_old < cache_entry_old_count)
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file_entries->libs[idx_old] = file_entries->libs[idx_old - 1];
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@@ -438,16 +438,16 @@ save_cache (const char *cache_name)
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temp_name);
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/* Write contents. */
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- if (opt_format != 2)
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+ if (opt_format != opt_format_new)
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{
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if (write (fd, file_entries, file_entries_size)
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!= (ssize_t) file_entries_size)
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error (EXIT_FAILURE, errno, _("Writing of cache data failed"));
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}
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- if (opt_format != 0)
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+ if (opt_format != opt_format_old)
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{
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/* Align cache. */
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- if (opt_format != 2)
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+ if (opt_format != opt_format_new)
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{
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char zero[pad];
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memset (zero, '\0', pad);
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diff --git a/elf/ldconfig.c b/elf/ldconfig.c
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index be730ceb075f6c1f..0fa5aef83f9cd86c 100644
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--- a/elf/ldconfig.c
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+++ b/elf/ldconfig.c
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@@ -100,8 +100,7 @@ static int opt_print_cache;
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int opt_verbose;
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/* Format to support. */
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-/* 0: only libc5/glibc2; 1: both; 2: only glibc 2.2. */
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-int opt_format = 2;
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+enum opt_format opt_format = opt_format_new;
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/* Build cache. */
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static int opt_build_cache = 1;
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@@ -281,11 +280,11 @@ parse_opt (int key, char *arg, struct argp_state *state)
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break;
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case 'c':
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if (strcmp (arg, "old") == 0)
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- opt_format = 0;
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+ opt_format = opt_format_old;
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else if (strcmp (arg, "compat") == 0)
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- opt_format = 1;
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+ opt_format = opt_format_compat;
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else if (strcmp (arg, "new") == 0)
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- opt_format = 2;
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+ opt_format = opt_format_new;
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break;
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default:
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return ARGP_ERR_UNKNOWN;
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diff --git a/sysdeps/generic/ldconfig.h b/sysdeps/generic/ldconfig.h
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index 6774212110d23eae..b15b142511829436 100644
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--- a/sysdeps/generic/ldconfig.h
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+++ b/sysdeps/generic/ldconfig.h
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@@ -90,7 +90,14 @@ extern char *chroot_canon (const char *chroot, const char *name);
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/* Declared in ldconfig.c. */
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extern int opt_verbose;
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-extern int opt_format;
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+enum opt_format
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+ {
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+ opt_format_old = 0, /* Use struct cache_file. */
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+ opt_format_compat = 1, /* Use both, old format followed by new. */
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+ opt_format_new = 2, /* Use struct cache_file_new. */
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+ };
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+
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+extern enum opt_format opt_format;
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/* Prototypes for a few program-wide used functions. */
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#include <programs/xmalloc.h>
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