glibc/glibc-rh1817513-112.patch

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