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authorUlrich Drepper <drepper@redhat.com>2001-08-11 08:57:41 +0000
committerUlrich Drepper <drepper@redhat.com>2001-08-11 08:57:41 +0000
commit67c94753e3f2ec372483cd41fbcc1bcdc04053fb (patch)
tree253f8967708078bd2fc0f24dcdae28d14f47e668 /elf/rtld.c
parent6ae9b99ef23691204c5e1e8128425f1a78465a4f (diff)
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Update.
2001-08-11 Ulrich Drepper <drepper@redhat.com> * malloc/malloc.c (ptmalloc_init): Don't call getenv five times. Instead use new function next_env_entry which iterates over the environment once. * sysdeps/arm/dl-machine.h (elf_machine_runtime_setup): Only set _dl_profile_map for the right object. * elf/dl-reloc.c (_dl_relocate_object): Allocate l_reloc_result only if consider_profiling is != 0, not if _dl_profile != NULL. * sysdeps/generic/dl-environ.c (_dl_next_ld_env_entry): Optimize a bit. Now returns pointer to first character set "LD_". * elf/rtld.c (process_envvars): Adjust for change above. * sysdeps/unix/sysv/linux/dl-librecon.h (EXTRA_LD_ENVVARS): Likewise. * sysdeps/unix/sysv/linux/i386/dl-librecon.h (EXTRA_LD_ENVVARS): Likewise. 2001-08-10 Wolfram Gloger <wg@malloc.de> * malloc/malloc.c (grow_heap): Use mmap() rather than mprotect() to allocate new memory, for better performance with Linux-2.4.x.
Diffstat (limited to 'elf/rtld.c')
-rw-r--r--elf/rtld.c62
1 files changed, 32 insertions, 30 deletions
diff --git a/elf/rtld.c b/elf/rtld.c
index 2eddb5a40a..b32de61888 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -1282,10 +1282,12 @@ warning: debug option `%s' unknown; try LD_DEBUG=help\n", startp);
/* Process all environments variables the dynamic linker must recognize.
Since all of them start with `LD_' we are a bit smarter while finding
all the entries. */
+extern char **_environ;
+
static void
process_envvars (enum mode *modep)
{
- char **runp = NULL;
+ char **runp = _environ;
char *envline;
enum mode mode = normal;
char *debug_output = NULL;
@@ -1301,98 +1303,98 @@ process_envvars (enum mode *modep)
/* This is a "LD_" variable at the end of the string without
a '=' character. Ignore it since otherwise we will access
invalid memory below. */
- break;
+ continue;
- switch (len - 3)
+ switch (len)
{
case 4:
/* Warning level, verbose or not. */
- if (memcmp (&envline[3], "WARN", 4) == 0)
- _dl_verbose = envline[8] != '\0';
+ if (memcmp (envline, "WARN", 4) == 0)
+ _dl_verbose = envline[5] != '\0';
break;
case 5:
/* Debugging of the dynamic linker? */
- if (memcmp (&envline[3], "DEBUG", 5) == 0)
- process_dl_debug (&envline[9]);
+ if (memcmp (envline, "DEBUG", 5) == 0)
+ process_dl_debug (&envline[6]);
break;
case 7:
/* Print information about versions. */
- if (memcmp (&envline[3], "VERBOSE", 7) == 0)
+ if (memcmp (envline, "VERBOSE", 7) == 0)
{
- version_info = envline[11] != '\0';
+ version_info = envline[8] != '\0';
break;
}
/* List of objects to be preloaded. */
- if (memcmp (&envline[3], "PRELOAD", 7) == 0)
+ if (memcmp (envline, "PRELOAD", 7) == 0)
{
- preloadlist = &envline[11];
+ preloadlist = &envline[8];
break;
}
/* Which shared object shall be profiled. */
- if (memcmp (&envline[3], "PROFILE", 7) == 0)
- _dl_profile = &envline[11];
+ if (memcmp (envline, "PROFILE", 7) == 0)
+ _dl_profile = &envline[8];
break;
case 8:
/* Do we bind early? */
- if (memcmp (&envline[3], "BIND_NOW", 8) == 0)
+ if (memcmp (envline, "BIND_NOW", 8) == 0)
{
- _dl_lazy = envline[12] == '\0';
+ _dl_lazy = envline[9] == '\0';
break;
}
- if (memcmp (&envline[3], "BIND_NOT", 8) == 0)
- _dl_bind_not = envline[12] != '\0';
+ if (memcmp (envline, "BIND_NOT", 8) == 0)
+ _dl_bind_not = envline[9] != '\0';
break;
case 9:
/* Test whether we want to see the content of the auxiliary
array passed up from the kernel. */
- if (memcmp (&envline[3], "SHOW_AUXV", 9) == 0)
+ if (memcmp (envline, "SHOW_AUXV", 9) == 0)
_dl_show_auxv ();
break;
case 10:
/* Mask for the important hardware capabilities. */
- if (memcmp (&envline[3], "HWCAP_MASK", 10) == 0)
- _dl_hwcap_mask = __strtoul_internal (&envline[14], NULL, 0, 0);
+ if (memcmp (envline, "HWCAP_MASK", 10) == 0)
+ _dl_hwcap_mask = __strtoul_internal (&envline[11], NULL, 0, 0);
break;
case 11:
/* Path where the binary is found. */
if (!__libc_enable_secure
- && memcmp (&envline[3], "ORIGIN_PATH", 11) == 0)
- _dl_origin_path = &envline[15];
+ && memcmp (envline, "ORIGIN_PATH", 11) == 0)
+ _dl_origin_path = &envline[12];
break;
case 12:
/* The library search path. */
- if (memcmp (&envline[3], "LIBRARY_PATH", 12) == 0)
+ if (memcmp (envline, "LIBRARY_PATH", 12) == 0)
{
- library_path = &envline[16];
+ library_path = &envline[13];
break;
}
/* Where to place the profiling data file. */
- if (memcmp (&envline[3], "DEBUG_OUTPUT", 12) == 0)
+ if (memcmp (envline, "DEBUG_OUTPUT", 12) == 0)
{
- debug_output = &envline[16];
+ debug_output = &envline[13];
break;
}
- if (memcmp (&envline[3], "DYNAMIC_WEAK", 12) == 0)
+ if (memcmp (envline, "DYNAMIC_WEAK", 12) == 0)
_dl_dynamic_weak = 1;
break;
case 14:
/* Where to place the profiling data file. */
if (!__libc_enable_secure
- && memcmp (&envline[3], "PROFILE_OUTPUT", 14) == 0)
+ && memcmp (envline, "PROFILE_OUTPUT", 14) == 0)
{
- _dl_profile_output = &envline[18];
+ _dl_profile_output = &envline[15];
if (*_dl_profile_output == '\0')
_dl_profile_output = "/var/tmp";
}
@@ -1400,7 +1402,7 @@ process_envvars (enum mode *modep)
case 20:
/* The mode of the dynamic linker can be set. */
- if (memcmp (&envline[3], "TRACE_LOADED_OBJECTS", 20) == 0)
+ if (memcmp (envline, "TRACE_LOADED_OBJECTS", 20) == 0)
mode = trace;
break;