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Add zend.dlopen_deepbind php.ini directive #11094

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Add zend.dlopen_deepbind php.ini directive #11094

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1 change: 1 addition & 0 deletions Zend/zend.c
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Original file line number Diff line number Diff line change
Expand Up @@ -241,6 +241,7 @@ static ZEND_INI_MH(OnUpdateFiberStackSize) /* {{{ */
ZEND_INI_BEGIN()
ZEND_INI_ENTRY("error_reporting", NULL, ZEND_INI_ALL, OnUpdateErrorReporting)
STD_ZEND_INI_ENTRY("zend.assertions", "1", ZEND_INI_ALL, OnUpdateAssertions, assertions, zend_executor_globals, executor_globals)
STD_ZEND_INI_BOOLEAN("zend.dlopen_deepbind", "1", ZEND_INI_SYSTEM, OnUpdateBool, dlopen_deepbind, zend_compiler_globals, compiler_globals)
ZEND_INI_ENTRY3_EX("zend.enable_gc", "1", ZEND_INI_ALL, OnUpdateGCEnabled, NULL, NULL, NULL, zend_gc_enabled_displayer_cb)
STD_ZEND_INI_BOOLEAN("zend.multibyte", "0", ZEND_INI_PERDIR, OnUpdateBool, multibyte, zend_compiler_globals, compiler_globals)
ZEND_INI_ENTRY("zend.script_encoding", NULL, ZEND_INI_ALL, OnUpdateScriptEncoding)
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2 changes: 2 additions & 0 deletions Zend/zend_globals.h
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Expand Up @@ -104,6 +104,8 @@ struct _zend_compiler_globals {

bool ini_parser_unbuffered_errors;

bool dlopen_deepbind;

zend_llist open_files;

struct _zend_ini_parser_param *ini_parser_param;
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2 changes: 1 addition & 1 deletion Zend/zend_portability.h
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Expand Up @@ -156,7 +156,7 @@
# if defined(RTLD_GROUP) && defined(RTLD_WORLD) && defined(RTLD_PARENT)
# define DL_LOAD(libname) dlopen(libname, PHP_RTLD_MODE | RTLD_GLOBAL | RTLD_GROUP | RTLD_WORLD | RTLD_PARENT)
# elif defined(RTLD_DEEPBIND) && !defined(__SANITIZE_ADDRESS__) && !__has_feature(memory_sanitizer)
# define DL_LOAD(libname) dlopen(libname, PHP_RTLD_MODE | RTLD_GLOBAL | RTLD_DEEPBIND)
# define DL_LOAD(libname) dlopen(libname, PHP_RTLD_MODE | RTLD_GLOBAL | (CG(dlopen_deepbind) ? RTLD_DEEPBIND : 0))
# else
# define DL_LOAD(libname) dlopen(libname, PHP_RTLD_MODE | RTLD_GLOBAL)
# endif
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6 changes: 6 additions & 0 deletions php.ini-development
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Expand Up @@ -396,6 +396,12 @@ zend.exception_ignore_args = Off
; Production Value: 0
zend.exception_string_param_max_len = 15

; Decides whether to use the dlopen(3) flag RTLD_DEEPBIND, if available, when
; loading shared libraries. This ensures symbol lookup will prefer symbols from
; the shared object itself over global ones. Conflicts with the use of custom
; memory allocators.
zend.dlopen_deepbind = On

;;;;;;;;;;;;;;;;;
; Miscellaneous ;
;;;;;;;;;;;;;;;;;
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6 changes: 6 additions & 0 deletions php.ini-production
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Expand Up @@ -398,6 +398,12 @@ zend.exception_ignore_args = On
; of sensitive information in stack traces.
zend.exception_string_param_max_len = 0

; Decides whether to use the dlopen(3) flag RTLD_DEEPBIND, if available, when
; loading shared libraries. This ensures symbol lookup will prefer symbols from
; the shared object itself over global ones. Conflicts with the use of custom
; memory allocators.
zend.dlopen_deepbind = On

;;;;;;;;;;;;;;;;;
; Miscellaneous ;
;;;;;;;;;;;;;;;;;
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