Commit 02e12ede46
lib/libc/include/x86_64-macos-gnu/malloc/malloc.h
@@ -0,0 +1,314 @@
+/*
+ * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#ifndef _MALLOC_MALLOC_H_
+#define _MALLOC_MALLOC_H_
+
+#include <stddef.h>
+#include <mach/mach_types.h>
+#include <sys/cdefs.h>
+#include <Availability.h>
+
+#if __has_feature(ptrauth_calls)
+#include <ptrauth.h>
+
+// Zone function pointer, type-diversified but not address-diversified (because
+// the zone can be copied). Process-independent because the zone structure may
+// be in the shared library cache.
+#define MALLOC_ZONE_FN_PTR(fn) __ptrauth(ptrauth_key_process_independent_code, \
+ FALSE, ptrauth_string_discriminator("malloc_zone_fn." #fn)) fn
+
+// Introspection function pointer, address- and type-diversified.
+// Process-independent because the malloc_introspection_t structure that contains
+// these pointers may be in the shared library cache.
+#define MALLOC_INTROSPECT_FN_PTR(fn) __ptrauth(ptrauth_key_process_independent_code, \
+ TRUE, ptrauth_string_discriminator("malloc_introspect_fn." #fn)) fn
+
+// Pointer to the introspection pointer table, type-diversified but not
+// address-diversified (because the zone can be copied).
+// Process-independent because the table pointer may be in the shared library cache.
+#define MALLOC_INTROSPECT_TBL_PTR(ptr) __ptrauth(ptrauth_key_process_independent_data,\
+ FALSE, ptrauth_string_discriminator("malloc_introspect_tbl")) ptr
+
+#endif // __has_feature(ptrauth_calls)
+
+#ifndef MALLOC_ZONE_FN_PTR
+#define MALLOC_ZONE_FN_PTR(fn) fn
+#define MALLOC_INTROSPECT_FN_PTR(fn) fn
+#define MALLOC_INTROSPECT_TBL_PTR(ptr) ptr
+#endif // MALLOC_ZONE_FN_PTR
+
+__BEGIN_DECLS
+/********* Type definitions ************/
+
+typedef struct _malloc_zone_t {
+ /* Only zone implementors should depend on the layout of this structure;
+ Regular callers should use the access functions below */
+ void *reserved1; /* RESERVED FOR CFAllocator DO NOT USE */
+ void *reserved2; /* RESERVED FOR CFAllocator DO NOT USE */
+ size_t (* MALLOC_ZONE_FN_PTR(size))(struct _malloc_zone_t *zone, const void *ptr); /* returns the size of a block or 0 if not in this zone; must be fast, especially for negative answers */
+ void *(* MALLOC_ZONE_FN_PTR(malloc))(struct _malloc_zone_t *zone, size_t size);
+ void *(* MALLOC_ZONE_FN_PTR(calloc))(struct _malloc_zone_t *zone, size_t num_items, size_t size); /* same as malloc, but block returned is set to zero */
+ void *(* MALLOC_ZONE_FN_PTR(valloc))(struct _malloc_zone_t *zone, size_t size); /* same as malloc, but block returned is set to zero and is guaranteed to be page aligned */
+ void (* MALLOC_ZONE_FN_PTR(free))(struct _malloc_zone_t *zone, void *ptr);
+ void *(* MALLOC_ZONE_FN_PTR(realloc))(struct _malloc_zone_t *zone, void *ptr, size_t size);
+ void (* MALLOC_ZONE_FN_PTR(destroy))(struct _malloc_zone_t *zone); /* zone is destroyed and all memory reclaimed */
+ const char *zone_name;
+
+ /* Optional batch callbacks; these may be NULL */
+ unsigned (* MALLOC_ZONE_FN_PTR(batch_malloc))(struct _malloc_zone_t *zone, size_t size, void **results, unsigned num_requested); /* given a size, returns pointers capable of holding that size; returns the number of pointers allocated (maybe 0 or less than num_requested) */
+ void (* MALLOC_ZONE_FN_PTR(batch_free))(struct _malloc_zone_t *zone, void **to_be_freed, unsigned num_to_be_freed); /* frees all the pointers in to_be_freed; note that to_be_freed may be overwritten during the process */
+
+ struct malloc_introspection_t * MALLOC_INTROSPECT_TBL_PTR(introspect);
+ unsigned version;
+
+ /* aligned memory allocation. The callback may be NULL. Present in version >= 5. */
+ void *(* MALLOC_ZONE_FN_PTR(memalign))(struct _malloc_zone_t *zone, size_t alignment, size_t size);
+
+ /* free a pointer known to be in zone and known to have the given size. The callback may be NULL. Present in version >= 6.*/
+ void (* MALLOC_ZONE_FN_PTR(free_definite_size))(struct _malloc_zone_t *zone, void *ptr, size_t size);
+
+ /* Empty out caches in the face of memory pressure. The callback may be NULL. Present in version >= 8. */
+ size_t (* MALLOC_ZONE_FN_PTR(pressure_relief))(struct _malloc_zone_t *zone, size_t goal);
+
+ /*
+ * Checks whether an address might belong to the zone. May be NULL. Present in version >= 10.
+ * False positives are allowed (e.g. the pointer was freed, or it's in zone space that has
+ * not yet been allocated. False negatives are not allowed.
+ */
+ boolean_t (* MALLOC_ZONE_FN_PTR(claimed_address))(struct _malloc_zone_t *zone, void *ptr);
+} malloc_zone_t;
+
+/********* Creation and destruction ************/
+
+extern malloc_zone_t *malloc_default_zone(void);
+ /* The initial zone */
+
+extern malloc_zone_t *malloc_create_zone(vm_size_t start_size, unsigned flags);
+ /* Creates a new zone with default behavior and registers it */
+
+extern void malloc_destroy_zone(malloc_zone_t *zone);
+ /* Destroys zone and everything it allocated */
+
+/********* Block creation and manipulation ************/
+
+extern void *malloc_zone_malloc(malloc_zone_t *zone, size_t size) __alloc_size(2);
+ /* Allocates a new pointer of size size; zone must be non-NULL */
+
+extern void *malloc_zone_calloc(malloc_zone_t *zone, size_t num_items, size_t size) __alloc_size(2,3);
+ /* Allocates a new pointer of size num_items * size; block is cleared; zone must be non-NULL */
+
+extern void *malloc_zone_valloc(malloc_zone_t *zone, size_t size) __alloc_size(2);
+ /* Allocates a new pointer of size size; zone must be non-NULL; Pointer is guaranteed to be page-aligned and block is cleared */
+
+extern void malloc_zone_free(malloc_zone_t *zone, void *ptr);
+ /* Frees pointer in zone; zone must be non-NULL */
+
+extern void *malloc_zone_realloc(malloc_zone_t *zone, void *ptr, size_t size) __alloc_size(3);
+ /* Enlarges block if necessary; zone must be non-NULL */
+
+extern malloc_zone_t *malloc_zone_from_ptr(const void *ptr);
+ /* Returns the zone for a pointer, or NULL if not in any zone.
+ The ptr must have been returned from a malloc or realloc call. */
+
+extern size_t malloc_size(const void *ptr);
+ /* Returns size of given ptr */
+
+extern size_t malloc_good_size(size_t size);
+ /* Returns number of bytes greater than or equal to size that can be allocated without padding */
+
+extern void *malloc_zone_memalign(malloc_zone_t *zone, size_t alignment, size_t size) __alloc_size(3) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
+ /*
+ * Allocates a new pointer of size size whose address is an exact multiple of alignment.
+ * alignment must be a power of two and at least as large as sizeof(void *).
+ * zone must be non-NULL.
+ */
+
+/********* Batch methods ************/
+
+extern unsigned malloc_zone_batch_malloc(malloc_zone_t *zone, size_t size, void **results, unsigned num_requested);
+ /* Allocates num blocks of the same size; Returns the number truly allocated (may be 0) */
+
+extern void malloc_zone_batch_free(malloc_zone_t *zone, void **to_be_freed, unsigned num);
+ /* frees all the pointers in to_be_freed; note that to_be_freed may be overwritten during the process; This function will always free even if the zone has no batch callback */
+
+/********* Functions for libcache ************/
+
+extern malloc_zone_t *malloc_default_purgeable_zone(void) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
+ /* Returns a pointer to the default purgeable_zone. */
+
+extern void malloc_make_purgeable(void *ptr) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
+ /* Make an allocation from the purgeable zone purgeable if possible. */
+
+extern int malloc_make_nonpurgeable(void *ptr) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_0);
+ /* Makes an allocation from the purgeable zone nonpurgeable.
+ * Returns zero if the contents were not purged since the last
+ * call to malloc_make_purgeable, else returns non-zero. */
+
+/********* Functions for zone implementors ************/
+
+extern void malloc_zone_register(malloc_zone_t *zone);
+ /* Registers a custom malloc zone; Should typically be called after a
+ * malloc_zone_t has been filled in with custom methods by a client. See
+ * malloc_create_zone for creating additional malloc zones with the
+ * default allocation and free behavior. */
+
+extern void malloc_zone_unregister(malloc_zone_t *zone);
+ /* De-registers a zone
+ Should typically be called before calling the zone destruction routine */
+
+extern void malloc_set_zone_name(malloc_zone_t *zone, const char *name);
+ /* Sets the name of a zone */
+
+extern const char *malloc_get_zone_name(malloc_zone_t *zone);
+ /* Returns the name of a zone */
+
+size_t malloc_zone_pressure_relief(malloc_zone_t *zone, size_t goal) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
+ /* malloc_zone_pressure_relief() advises the malloc subsystem that the process is under memory pressure and
+ * that the subsystem should make its best effort towards releasing (i.e. munmap()-ing) "goal" bytes from "zone".
+ * If "goal" is passed as zero, the malloc subsystem will attempt to achieve maximal pressure relief in "zone".
+ * If "zone" is passed as NULL, all zones are examined for pressure relief opportunities.
+ * malloc_zone_pressure_relief() returns the number of bytes released.
+ */
+
+typedef struct {
+ vm_address_t address;
+ vm_size_t size;
+} vm_range_t;
+
+typedef struct malloc_statistics_t {
+ unsigned blocks_in_use;
+ size_t size_in_use;
+ size_t max_size_in_use; /* high water mark of touched memory */
+ size_t size_allocated; /* reserved in memory */
+} malloc_statistics_t;
+
+typedef kern_return_t memory_reader_t(task_t remote_task, vm_address_t remote_address, vm_size_t size, void **local_memory);
+ /* given a task, "reads" the memory at the given address and size
+local_memory: set to a contiguous chunk of memory; validity of local_memory is assumed to be limited (until next call) */
+
+#define MALLOC_PTR_IN_USE_RANGE_TYPE 1 /* for allocated pointers */
+#define MALLOC_PTR_REGION_RANGE_TYPE 2 /* for region containing pointers */
+#define MALLOC_ADMIN_REGION_RANGE_TYPE 4 /* for region used internally */
+#define MALLOC_ZONE_SPECIFIC_FLAGS 0xff00 /* bits reserved for zone-specific purposes */
+
+typedef void vm_range_recorder_t(task_t, void *, unsigned type, vm_range_t *, unsigned);
+ /* given a task and context, "records" the specified addresses */
+
+/* Print function for the print_task() operation. */
+typedef void print_task_printer_t(const char *fmt, ...);
+
+typedef struct malloc_introspection_t {
+ kern_return_t (* MALLOC_INTROSPECT_FN_PTR(enumerator))(task_t task, void *, unsigned type_mask, vm_address_t zone_address, memory_reader_t reader, vm_range_recorder_t recorder); /* enumerates all the malloc pointers in use */
+ size_t (* MALLOC_INTROSPECT_FN_PTR(good_size))(malloc_zone_t *zone, size_t size);
+ boolean_t (* MALLOC_INTROSPECT_FN_PTR(check))(malloc_zone_t *zone); /* Consistency checker */
+ void (* MALLOC_INTROSPECT_FN_PTR(print))(malloc_zone_t *zone, boolean_t verbose); /* Prints zone */
+ void (* MALLOC_INTROSPECT_FN_PTR(log))(malloc_zone_t *zone, void *address); /* Enables logging of activity */
+ void (* MALLOC_INTROSPECT_FN_PTR(force_lock))(malloc_zone_t *zone); /* Forces locking zone */
+ void (* MALLOC_INTROSPECT_FN_PTR(force_unlock))(malloc_zone_t *zone); /* Forces unlocking zone */
+ void (* MALLOC_INTROSPECT_FN_PTR(statistics))(malloc_zone_t *zone, malloc_statistics_t *stats); /* Fills statistics */
+ boolean_t (* MALLOC_INTROSPECT_FN_PTR(zone_locked))(malloc_zone_t *zone); /* Are any zone locks held */
+
+ /* Discharge checking. Present in version >= 7. */
+ boolean_t (* MALLOC_INTROSPECT_FN_PTR(enable_discharge_checking))(malloc_zone_t *zone);
+ void (* MALLOC_INTROSPECT_FN_PTR(disable_discharge_checking))(malloc_zone_t *zone);
+ void (* MALLOC_INTROSPECT_FN_PTR(discharge))(malloc_zone_t *zone, void *memory);
+#ifdef __BLOCKS__
+ void (* MALLOC_INTROSPECT_FN_PTR(enumerate_discharged_pointers))(malloc_zone_t *zone, void (^report_discharged)(void *memory, void *info));
+ #else
+ void *enumerate_unavailable_without_blocks;
+#endif /* __BLOCKS__ */
+ void (* MALLOC_INTROSPECT_FN_PTR(reinit_lock))(malloc_zone_t *zone); /* Reinitialize zone locks, called only from atfork_child handler. Present in version >= 9. */
+ void (* MALLOC_INTROSPECT_FN_PTR(print_task))(task_t task, unsigned level, vm_address_t zone_address, memory_reader_t reader, print_task_printer_t printer); /* debug print for another process. Present in version >= 11. */
+ void (* MALLOC_INTROSPECT_FN_PTR(task_statistics))(task_t task, vm_address_t zone_address, memory_reader_t reader, malloc_statistics_t *stats); /* Present in version >= 12 */
+} malloc_introspection_t;
+
+// The value of "level" when passed to print_task() that corresponds to
+// verbose passed to print()
+#define MALLOC_VERBOSE_PRINT_LEVEL 2
+
+extern void malloc_printf(const char *format, ...);
+ /* Convenience for logging errors and warnings;
+ No allocation is performed during execution of this function;
+ Only understands usual %p %d %s formats, and %y that expresses a number of bytes (5b,10KB,1MB...)
+ */
+
+/********* Functions for performance tools ************/
+
+extern kern_return_t malloc_get_all_zones(task_t task, memory_reader_t reader, vm_address_t **addresses, unsigned *count);
+ /* Fills addresses and count with the addresses of the zones in task;
+ Note that the validity of the addresses returned correspond to the validity of the memory returned by reader */
+
+/********* Debug helpers ************/
+
+extern void malloc_zone_print_ptr_info(void *ptr);
+ /* print to stdout if this pointer is in the malloc heap, free status, and size */
+
+extern boolean_t malloc_zone_check(malloc_zone_t *zone);
+ /* Checks zone is well formed; if !zone, checks all zones */
+
+extern void malloc_zone_print(malloc_zone_t *zone, boolean_t verbose);
+ /* Prints summary on zone; if !zone, prints all zones */
+
+extern void malloc_zone_statistics(malloc_zone_t *zone, malloc_statistics_t *stats);
+ /* Fills statistics for zone; if !zone, sums up all zones */
+
+extern void malloc_zone_log(malloc_zone_t *zone, void *address);
+ /* Controls logging of all activity; if !zone, for all zones;
+ If address==0 nothing is logged;
+ If address==-1 all activity is logged;
+ Else only the activity regarding address is logged */
+
+struct mstats {
+ size_t bytes_total;
+ size_t chunks_used;
+ size_t bytes_used;
+ size_t chunks_free;
+ size_t bytes_free;
+};
+
+extern struct mstats mstats(void);
+
+extern boolean_t malloc_zone_enable_discharge_checking(malloc_zone_t *zone) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
+/* Increment the discharge checking enabled counter for a zone. Returns true if the zone supports checking, false if it does not. */
+
+extern void malloc_zone_disable_discharge_checking(malloc_zone_t *zone) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
+/* Decrement the discharge checking enabled counter for a zone. */
+
+extern void malloc_zone_discharge(malloc_zone_t *zone, void *memory) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
+/* Register memory that the programmer expects to be freed soon.
+ zone may be NULL in which case the zone is determined using malloc_zone_from_ptr().
+ If discharge checking is off for the zone this function is a no-op. */
+
+#ifdef __BLOCKS__
+extern void malloc_zone_enumerate_discharged_pointers(malloc_zone_t *zone, void (^report_discharged)(void *memory, void *info)) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
+/* Calls report_discharged for each block that was registered using malloc_zone_discharge() but has not yet been freed.
+ info is used to provide zone defined information about the memory block.
+ If zone is NULL then the enumeration covers all zones. */
+#else
+extern void malloc_zone_enumerate_discharged_pointers(malloc_zone_t *zone, void *) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
+#endif /* __BLOCKS__ */
+
+__END_DECLS
+
+#endif /* _MALLOC_MALLOC_H_ */
lib/libc/include/x86_64-macos-gnu/sys/file.h
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2000-2008 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+/* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */
+/*
+ * Copyright (c) 1982, 1986, 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)file.h 8.3 (Berkeley) 1/9/95
+ */
+
+#ifndef _SYS_FILE_H_
+#define _SYS_FILE_H_
+
+#include <sys/appleapiopts.h>
+#include <sys/types.h>
+#include <sys/fcntl.h>
+#include <sys/unistd.h>
+#include <sys/queue.h>
+#include <sys/cdefs.h>
+
+
+#ifndef _KAUTH_CRED_T
+#define _KAUTH_CRED_T
+struct ucred;
+typedef struct ucred *kauth_cred_t;
+struct posix_cred;
+typedef struct posix_cred *posix_cred_t;
+#endif /* !_KAUTH_CRED_T */
+
+__BEGIN_DECLS
+
+__END_DECLS
+#endif /* !_SYS_FILE_H_ */