Merge "linker: Remove setting _USING_LIBCXX"
diff --git a/android-changes-for-ndk-developers.md b/android-changes-for-ndk-developers.md
index 4bd97a0..0fe16bf 100644
--- a/android-changes-for-ndk-developers.md
+++ b/android-changes-for-ndk-developers.md
@@ -46,6 +46,10 @@
[ReLinker](https://github.com/KeepSafe/ReLinker) which claims to solve
these problems automatically.
+Alternatively, if you don't have too many dependencies, it can be easiest to
+simply link all of your code into one big library and sidestep the details of
+library and symbol lookup changes on all past (and future) Android versions.
+
## Changes to library search order
We have made various fixes to library search order when resolving symbols.
diff --git a/docs/status.md b/docs/status.md
index 2f356f3..4466a3c 100644
--- a/docs/status.md
+++ b/docs/status.md
@@ -39,7 +39,9 @@
New libc functions in R (API level 30):
* Full C11 `<threads.h>` (available as inlines for older API levels).
+ * `memfd_create` and `mlock2` (GNU extensions).
* `renameat2` (GNU extension).
+ * `pthread_cond_clockwait`/`pthread_mutex_clocklock`/`pthread_rwlock_clockrdlock`/`pthread_rwlock_clockwrlock`/`sem_clockwait`
New libc functions in Q (API level 29):
* `timespec_get` (C11 `<time.h>` addition)
diff --git a/libc/SECCOMP_WHITELIST_COMMON.TXT b/libc/SECCOMP_WHITELIST_COMMON.TXT
index a2114dd..07f84a8 100644
--- a/libc/SECCOMP_WHITELIST_COMMON.TXT
+++ b/libc/SECCOMP_WHITELIST_COMMON.TXT
@@ -68,28 +68,24 @@
# Useful new syscalls which we don't yet use in bionic.
#
-# Since Linux 3.14, not in glibc.
-int sched_getattr(pid_t pid, struct sched_attr* attr, unsigned int flags) all
-int sched_setattr(pid_t pid, struct sched_attr* attr, unsigned int size, unsigned int flags) all
-# Since Linux 3.15, glibc 2.27.
-int memfd_create(const char* name, unsigned int flags) all
-# Since Linux 3.19, not in glibc.
-int execveat(int dirfd, const char* pathname, char* const* argv, char* const* envp, int flags) all
-# Since Linux 4.3, not in glibc. Probed for and conditionally used by ART.
-int membarrier(int cmd, int flags) all
-# Since Linux 4.5, glibc 2.27.
-ssize_t copy_file_range(int fd_in, loff_t* off_in, int fd_out, loff_t* off_out, size_t len, unsigned int flags) all
-# Since Linux 4.4, glibc 2.27.
-int mlock2(const void* addr, size_t len, int flags) all
-# Since Linux 4.6, glibc 2.26.
-ssize_t preadv2(int fd, const struct iovec* iov, int iovcnt, off_t offset, int flags) all
-ssize_t pwritev2(int fd, const struct iovec* iov, int iovcnt, off_t offset, int flags) all
# Since Linux 2.5, not in glibc.
int io_setup(unsigned nr, aio_context_t *ctxp) all
int io_destroy(aio_context_t ctx) all
int io_submit(aio_context_t ctx, long nr, struct iocb **iocbpp) all
int io_getevents(aio_context_t ctx, long min_nr, long max_nr, struct io_event *events, struct timespec *timeout) all
int io_cancel(aio_context_t ctx, struct iocb *, struct io_event *result) all
+# Since Linux 3.14, not in glibc.
+int sched_getattr(pid_t pid, struct sched_attr* attr, unsigned int flags) all
+int sched_setattr(pid_t pid, struct sched_attr* attr, unsigned int size, unsigned int flags) all
+# Since Linux 3.19, not in glibc (and not really needed to implement fexecve).
+int execveat(int dirfd, const char* pathname, char* const* argv, char* const* envp, int flags) all
+# Since Linux 4.3, not in glibc. Probed for and conditionally used by ART.
+int membarrier(int cmd, int flags) all
+# Since Linux 4.5, glibc 2.27.
+ssize_t copy_file_range(int fd_in, loff_t* off_in, int fd_out, loff_t* off_out, size_t len, unsigned int flags) all
+# Since Linux 4.6, glibc 2.26.
+ssize_t preadv2(int fd, const struct iovec* iov, int iovcnt, off_t offset, int flags) all
+ssize_t pwritev2(int fd, const struct iovec* iov, int iovcnt, off_t offset, int flags) all
# Since Linux 4.11, glibc 2.30.
int statx(int, const char*, int, unsigned int, statx*) all
# Since Linux 5.1, not in glibc.
diff --git a/libc/SYSCALLS.TXT b/libc/SYSCALLS.TXT
index 62d698f..21ebdbd 100644
--- a/libc/SYSCALLS.TXT
+++ b/libc/SYSCALLS.TXT
@@ -107,12 +107,14 @@
int __close:close(int) all
pid_t __getpid:getpid() all
+int memfd_create(const char*, unsigned) all
int munmap(void*, size_t) all
void* __mremap:mremap(void*, size_t, size_t, int, void*) all
int msync(const void*, size_t, int) all
int mprotect(const void*, size_t, int) all
int madvise(void*, size_t, int) all
-int mlock(const void* addr, size_t len) all
+int mlock(const void* addr, size_t len) all
+int mlock2(const void* addr, size_t len, int flags) all
int munlock(const void* addr, size_t len) all
int mlockall(int flags) all
int munlockall() all
diff --git a/libc/bionic/libc_init_dynamic.cpp b/libc/bionic/libc_init_dynamic.cpp
index 4f3b4f7..d6d5552 100644
--- a/libc/bionic/libc_init_dynamic.cpp
+++ b/libc/bionic/libc_init_dynamic.cpp
@@ -69,6 +69,13 @@
__LIBC_HIDDEN__ void* __libc_sysinfo = reinterpret_cast<void*>(__libc_int0x80);
#endif
+extern "C" __attribute__((weak)) void __hwasan_library_loaded(ElfW(Addr) base,
+ const ElfW(Phdr)* phdr,
+ ElfW(Half) phnum);
+extern "C" __attribute__((weak)) void __hwasan_library_unloaded(ElfW(Addr) base,
+ const ElfW(Phdr)* phdr,
+ ElfW(Half) phnum);
+
// We need a helper function for __libc_preinit because compiling with LTO may
// inline functions requiring a stack protector check, but __stack_chk_guard is
// not initialized at the start of __libc_preinit. __libc_preinit_impl will run
@@ -91,6 +98,14 @@
// Hooks for various libraries to let them know that we're starting up.
__libc_globals.mutate(__libc_init_malloc);
+
+#if __has_feature(hwaddress_sanitizer)
+ // Notify the HWASan runtime library whenever a library is loaded or unloaded
+ // so that it can update its shadow memory.
+ __libc_shared_globals()->load_hook = __hwasan_library_loaded;
+ __libc_shared_globals()->unload_hook = __hwasan_library_unloaded;
+#endif
+
netdClientInit();
}
diff --git a/libc/include/sys/mman.h b/libc/include/sys/mman.h
index 89d6d07..3b83229 100644
--- a/libc/include/sys/mman.h
+++ b/libc/include/sys/mman.h
@@ -26,34 +26,27 @@
* SUCH DAMAGE.
*/
-#ifndef _SYS_MMAN_H_
-#define _SYS_MMAN_H_
+#pragma once
#include <sys/cdefs.h>
#include <sys/types.h>
+#include <linux/memfd.h>
#include <linux/mman.h>
__BEGIN_DECLS
-#ifndef MAP_ANON
-#define MAP_ANON MAP_ANONYMOUS
-#endif
+/** Alternative spelling of the `MAP_ANONYMOUS` flag for mmap(). */
+#define MAP_ANON MAP_ANONYMOUS
+/** Return value for mmap(). */
#define MAP_FAILED __BIONIC_CAST(reinterpret_cast, void*, -1)
-#define MREMAP_MAYMOVE 1
-#define MREMAP_FIXED 2
-
-/*
- * See https://android.googlesource.com/platform/bionic/+/master/docs/32-bit-abi.md
+/**
+ * [mmap(2)](http://man7.org/linux/man-pages/man2/mmap.2.html)
+ * creates a memory mapping for the given range.
*
- * mmap64 wasn't really around until L, but we added an inline for it since it
- * allows a lot more code to compile with _FILE_OFFSET_BITS=64.
- *
- * GCC removes the static inline unless it is explicitly used. We can get around
- * this with __attribute__((used)), but that needlessly adds a definition of
- * mmap64 to every translation unit that includes this header. Instead, just
- * preserve the old behavior for GCC and emit a useful diagnostic.
+ * Returns the address of the mapping on success,
+ * and returns `MAP_FAILED` and sets `errno` on failure.
*/
#if defined(__USE_FILE_OFFSET64)
void* mmap(void* __addr, size_t __size, int __prot, int __flags, int __fd, off_t __offset) __RENAME(mmap64);
@@ -62,25 +55,126 @@
#endif
#if __ANDROID_API__ >= __ANDROID_API_L__
+/**
+ * mmap64() is a variant of mmap() that takes a 64-bit offset even on LP32.
+ *
+ * See https://android.googlesource.com/platform/bionic/+/master/docs/32-bit-abi.md
+ *
+ * mmap64 wasn't really around until L, but we added an inline for it since it
+ * allows a lot more code to compile with _FILE_OFFSET_BITS=64.
+ */
void* mmap64(void* __addr, size_t __size, int __prot, int __flags, int __fd, off64_t __offset) __INTRODUCED_IN(21);
#endif
+/**
+ * [munmap(2)](http://man7.org/linux/man-pages/man2/munmap.2.html)
+ * deletes a memory mapping for the given range.
+ *
+ * Returns 0 on success, and returns -1 and sets `errno` on failure.
+ */
int munmap(void* __addr, size_t __size);
+
+/**
+ * [msync(2)](http://man7.org/linux/man-pages/man2/msync.2.html)
+ * flushes changes to a memory-mapped file to disk.
+ *
+ * Returns 0 on success, and returns -1 and sets `errno` on failure.
+ */
int msync(void* __addr, size_t __size, int __flags);
+
+/**
+ * [mprotect(2)](http://man7.org/linux/man-pages/man2/mprotect.2.html)
+ * sets the protection on a memory region.
+ *
+ * Returns 0 on success, and returns -1 and sets `errno` on failure.
+ */
int mprotect(void* __addr, size_t __size, int __prot);
+
+/** Flag for mremap(). */
+#define MREMAP_MAYMOVE 1
+
+/** Flag for mremap(). */
+#define MREMAP_FIXED 2
+
+/**
+ * [mremap(2)](http://man7.org/linux/man-pages/man2/mremap.2.html)
+ * expands or shrinks an existing memory mapping.
+ *
+ * Returns the address of the mapping on success,
+ * and returns `MAP_FAILED` and sets `errno` on failure.
+ */
void* mremap(void* __old_addr, size_t __old_size, size_t __new_size, int __flags, ...);
+/**
+ * [mlockall(2)](http://man7.org/linux/man-pages/man2/mlockall.2.html)
+ * locks pages (preventing swapping).
+ *
+ * Returns 0 on success, and returns -1 and sets `errno` on failure.
+ */
int mlockall(int __flags) __INTRODUCED_IN(17);
+
+/**
+ * [munlockall(2)](http://man7.org/linux/man-pages/man2/munlockall.2.html)
+ * unlocks pages (allowing swapping).
+ *
+ * Returns 0 on success, and returns -1 and sets `errno` on failure.
+ */
int munlockall(void) __INTRODUCED_IN(17);
+/**
+ * [mlock(2)](http://man7.org/linux/man-pages/man2/mlock.2.html)
+ * locks pages (preventing swapping).
+ *
+ * Returns 0 on success, and returns -1 and sets `errno` on failure.
+ */
int mlock(const void* __addr, size_t __size);
+
+/**
+ * [mlock2(2)](http://man7.org/linux/man-pages/man2/mlock.2.html)
+ * locks pages (preventing swapping), with optional flags.
+ *
+ * Returns 0 on success, and returns -1 and sets `errno` on failure.
+ */
+int mlock2(const void* __addr, size_t __size, int __flags) __INTRODUCED_IN(30);
+
+/**
+ * [munlock(2)](http://man7.org/linux/man-pages/man2/munlock.2.html)
+ * unlocks pages (allowing swapping).
+ *
+ * Returns 0 on success, and returns -1 and sets `errno` on failure.
+ */
int munlock(const void* __addr, size_t __size);
+/**
+ * [mincore(2)](http://man7.org/linux/man-pages/man2/mincore.2.html)
+ * tests whether pages are resident in memory.
+ *
+ * Returns 0 on success, and returns -1 and sets `errno` on failure.
+ */
int mincore(void* __addr, size_t __size, unsigned char* __vector);
+/**
+ * [madvise(2)](http://man7.org/linux/man-pages/man2/madvise.2.html)
+ * gives the kernel advice about future usage patterns.
+ *
+ * Returns 0 on success, and returns -1 and sets `errno` on failure.
+ */
int madvise(void* __addr, size_t __size, int __advice);
+#if defined(__USE_GNU)
+
+/**
+ * [memfd_create(2)](http://man7.org/linux/man-pages/man2/memfd_create.2.html)
+ * creates an anonymous file.
+ *
+ * Returns an fd on success, and returns -1 and sets `errno` on failure.
+ */
+int memfd_create(const char* __name, unsigned __flags) __INTRODUCED_IN(30);
+
+#endif
+
#if __ANDROID_API__ >= __ANDROID_API_M__
+
/*
* Some third-party code uses the existence of POSIX_MADV_NORMAL to detect the
* availability of posix_madvise. This is not correct, since having up-to-date
@@ -89,16 +183,30 @@
*
* https://github.com/android-ndk/ndk/issues/395
*/
+
+/** Flag for posix_madvise(). */
#define POSIX_MADV_NORMAL MADV_NORMAL
+/** Flag for posix_madvise(). */
#define POSIX_MADV_RANDOM MADV_RANDOM
+/** Flag for posix_madvise(). */
#define POSIX_MADV_SEQUENTIAL MADV_SEQUENTIAL
+/** Flag for posix_madvise(). */
#define POSIX_MADV_WILLNEED MADV_WILLNEED
+/** Flag for posix_madvise(). */
#define POSIX_MADV_DONTNEED MADV_DONTNEED
+
#endif
+
+/**
+ * [posix_madvise(3)](http://man7.org/linux/man-pages/man3/posix_madvise.3.html)
+ * gives the kernel advice about future usage patterns.
+ *
+ * Returns 0 on success, and returns a positive error number on failure.
+ *
+ * See also madvise() which has been available much longer.
+ */
int posix_madvise(void* __addr, size_t __size, int __advice) __INTRODUCED_IN(23);
__END_DECLS
#include <android/legacy_sys_mman_inlines.h>
-
-#endif
diff --git a/libc/kernel/tools/update_all.py b/libc/kernel/tools/update_all.py
index 9d5b02d..cef24dd 100755
--- a/libc/kernel/tools/update_all.py
+++ b/libc/kernel/tools/update_all.py
@@ -110,7 +110,9 @@
content += ' #define SYS_%s %s\n' % (syscall, nr_name)
content += '#endif\n'
- updater.editFile('%s/include/bits/glibc-syscalls.h' % libc_root, content)
+ syscall_file = os.path.join(libc_root, 'include/bits/glibc-syscalls.h')
+ updater.readFile(syscall_file)
+ updater.editFile(syscall_file, content)
try:
diff --git a/libc/kernel/uapi/asm-x86/asm/vmx.h b/libc/kernel/uapi/asm-x86/asm/vmx.h
index 0f7ede3..83365f8 100644
--- a/libc/kernel/uapi/asm-x86/asm/vmx.h
+++ b/libc/kernel/uapi/asm-x86/asm/vmx.h
@@ -78,6 +78,5 @@
#define VMX_EXIT_REASONS { EXIT_REASON_EXCEPTION_NMI, "EXCEPTION_NMI" }, { EXIT_REASON_EXTERNAL_INTERRUPT, "EXTERNAL_INTERRUPT" }, { EXIT_REASON_TRIPLE_FAULT, "TRIPLE_FAULT" }, { EXIT_REASON_PENDING_INTERRUPT, "PENDING_INTERRUPT" }, { EXIT_REASON_NMI_WINDOW, "NMI_WINDOW" }, { EXIT_REASON_TASK_SWITCH, "TASK_SWITCH" }, { EXIT_REASON_CPUID, "CPUID" }, { EXIT_REASON_HLT, "HLT" }, { EXIT_REASON_INVD, "INVD" }, { EXIT_REASON_INVLPG, "INVLPG" }, { EXIT_REASON_RDPMC, "RDPMC" }, { EXIT_REASON_RDTSC, "RDTSC" }, { EXIT_REASON_VMCALL, "VMCALL" }, { EXIT_REASON_VMCLEAR, "VMCLEAR" }, { EXIT_REASON_VMLAUNCH, "VMLAUNCH" }, { EXIT_REASON_VMPTRLD, "VMPTRLD" }, { EXIT_REASON_VMPTRST, "VMPTRST" }, { EXIT_REASON_VMREAD, "VMREAD" }, { EXIT_REASON_VMRESUME, "VMRESUME" }, { EXIT_REASON_VMWRITE, "VMWRITE" }, { EXIT_REASON_VMOFF, "VMOFF" }, { EXIT_REASON_VMON, "VMON" }, { EXIT_REASON_CR_ACCESS, "CR_ACCESS" }, { EXIT_REASON_DR_ACCESS, "DR_ACCESS" }, { EXIT_REASON_IO_INSTRUCTION, "IO_INSTRUCTION" }, { EXIT_REASON_MSR_READ, "MSR_READ" }, { EXIT_REASON_MSR_WRITE, "MSR_WRITE" }, { EXIT_REASON_INVALID_STATE, "INVALID_STATE" }, { EXIT_REASON_MSR_LOAD_FAIL, "MSR_LOAD_FAIL" }, { EXIT_REASON_MWAIT_INSTRUCTION, "MWAIT_INSTRUCTION" }, { EXIT_REASON_MONITOR_TRAP_FLAG, "MONITOR_TRAP_FLAG" }, { EXIT_REASON_MONITOR_INSTRUCTION, "MONITOR_INSTRUCTION" }, { EXIT_REASON_PAUSE_INSTRUCTION, "PAUSE_INSTRUCTION" }, { EXIT_REASON_MCE_DURING_VMENTRY, "MCE_DURING_VMENTRY" }, { EXIT_REASON_TPR_BELOW_THRESHOLD, "TPR_BELOW_THRESHOLD" }, { EXIT_REASON_APIC_ACCESS, "APIC_ACCESS" }, { EXIT_REASON_EOI_INDUCED, "EOI_INDUCED" }, { EXIT_REASON_GDTR_IDTR, "GDTR_IDTR" }, { EXIT_REASON_LDTR_TR, "LDTR_TR" }, { EXIT_REASON_EPT_VIOLATION, "EPT_VIOLATION" }, { EXIT_REASON_EPT_MISCONFIG, "EPT_MISCONFIG" }, { EXIT_REASON_INVEPT, "INVEPT" }, { EXIT_REASON_RDTSCP, "RDTSCP" }, { EXIT_REASON_PREEMPTION_TIMER, "PREEMPTION_TIMER" }, { EXIT_REASON_INVVPID, "INVVPID" }, { EXIT_REASON_WBINVD, "WBINVD" }, { EXIT_REASON_XSETBV, "XSETBV" }, { EXIT_REASON_APIC_WRITE, "APIC_WRITE" }, { EXIT_REASON_RDRAND, "RDRAND" }, { EXIT_REASON_INVPCID, "INVPCID" }, { EXIT_REASON_VMFUNC, "VMFUNC" }, { EXIT_REASON_ENCLS, "ENCLS" }, { EXIT_REASON_RDSEED, "RDSEED" }, { EXIT_REASON_PML_FULL, "PML_FULL" }, { EXIT_REASON_XSAVES, "XSAVES" }, { EXIT_REASON_XRSTORS, "XRSTORS" }
#define VMX_ABORT_SAVE_GUEST_MSR_FAIL 1
#define VMX_ABORT_LOAD_HOST_PDPTE_FAIL 2
-#define VMX_ABORT_VMCS_CORRUPTED 3
#define VMX_ABORT_LOAD_HOST_MSR_FAIL 4
#endif
diff --git a/libc/kernel/uapi/linux/bpf.h b/libc/kernel/uapi/linux/bpf.h
index 11df994..3f09421 100644
--- a/libc/kernel/uapi/linux/bpf.h
+++ b/libc/kernel/uapi/linux/bpf.h
@@ -548,6 +548,7 @@
char name[BPF_OBJ_NAME_LEN];
__u32 ifindex;
__u32 gpl_compatible : 1;
+ __u32 : 31;
__u64 netns_dev;
__u64 netns_ino;
__u32 nr_jited_ksyms;
diff --git a/libc/kernel/uapi/linux/nilfs2_ondisk.h b/libc/kernel/uapi/linux/nilfs2_ondisk.h
index e9995a1..a05e7b7 100644
--- a/libc/kernel/uapi/linux/nilfs2_ondisk.h
+++ b/libc/kernel/uapi/linux/nilfs2_ondisk.h
@@ -20,6 +20,7 @@
#define _LINUX_NILFS2_ONDISK_H
#include <linux/types.h>
#include <linux/magic.h>
+#include <asm/byteorder.h>
#define NILFS_INODE_BMAP_SIZE 7
struct nilfs_inode {
__le64 i_blocks;
@@ -248,11 +249,11 @@
NILFS_CHECKPOINT_MINOR,
};
#define NILFS_CHECKPOINT_FNS(flag,name) static inline void nilfs_checkpoint_set_ ##name(struct nilfs_checkpoint * cp) \
-{ cp->cp_flags = cpu_to_le32(le32_to_cpu(cp->cp_flags) | (1UL << NILFS_CHECKPOINT_ ##flag)); \
+{ cp->cp_flags = __cpu_to_le32(__le32_to_cpu(cp->cp_flags) | (1UL << NILFS_CHECKPOINT_ ##flag)); \
} static inline void nilfs_checkpoint_clear_ ##name(struct nilfs_checkpoint * cp) \
-{ cp->cp_flags = cpu_to_le32(le32_to_cpu(cp->cp_flags) & ~(1UL << NILFS_CHECKPOINT_ ##flag)); \
+{ cp->cp_flags = __cpu_to_le32(__le32_to_cpu(cp->cp_flags) & ~(1UL << NILFS_CHECKPOINT_ ##flag)); \
} static inline int nilfs_checkpoint_ ##name(const struct nilfs_checkpoint * cp) \
-{ return ! ! (le32_to_cpu(cp->cp_flags) & (1UL << NILFS_CHECKPOINT_ ##flag)); \
+{ return ! ! (__le32_to_cpu(cp->cp_flags) & (1UL << NILFS_CHECKPOINT_ ##flag)); \
}
struct nilfs_cpfile_header {
__le64 ch_ncheckpoints;
@@ -272,11 +273,11 @@
NILFS_SEGMENT_USAGE_ERROR,
};
#define NILFS_SEGMENT_USAGE_FNS(flag,name) static inline void nilfs_segment_usage_set_ ##name(struct nilfs_segment_usage * su) \
-{ su->su_flags = cpu_to_le32(le32_to_cpu(su->su_flags) | (1UL << NILFS_SEGMENT_USAGE_ ##flag)); \
+{ su->su_flags = __cpu_to_le32(__le32_to_cpu(su->su_flags) | (1UL << NILFS_SEGMENT_USAGE_ ##flag)); \
} static inline void nilfs_segment_usage_clear_ ##name(struct nilfs_segment_usage * su) \
-{ su->su_flags = cpu_to_le32(le32_to_cpu(su->su_flags) & ~(1UL << NILFS_SEGMENT_USAGE_ ##flag)); \
+{ su->su_flags = __cpu_to_le32(__le32_to_cpu(su->su_flags) & ~(1UL << NILFS_SEGMENT_USAGE_ ##flag)); \
} static inline int nilfs_segment_usage_ ##name(const struct nilfs_segment_usage * su) \
-{ return ! ! (le32_to_cpu(su->su_flags) & (1UL << NILFS_SEGMENT_USAGE_ ##flag)); \
+{ return ! ! (__le32_to_cpu(su->su_flags) & (1UL << NILFS_SEGMENT_USAGE_ ##flag)); \
}
struct nilfs_sufile_header {
__le64 sh_ncleansegs;
diff --git a/libc/kernel/uapi/linux/version.h b/libc/kernel/uapi/linux/version.h
index 815f53d..94bf4ba 100644
--- a/libc/kernel/uapi/linux/version.h
+++ b/libc/kernel/uapi/linux/version.h
@@ -16,5 +16,5 @@
***
****************************************************************************
****************************************************************************/
-#define LINUX_VERSION_CODE 328192
+#define LINUX_VERSION_CODE 328198
#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
diff --git a/libc/kernel/uapi/linux/videodev2.h b/libc/kernel/uapi/linux/videodev2.h
index e6df45c..f77c6bd 100644
--- a/libc/kernel/uapi/linux/videodev2.h
+++ b/libc/kernel/uapi/linux/videodev2.h
@@ -210,7 +210,7 @@
#define V4L2_PIX_FMT_RGBX444 v4l2_fourcc('R', 'X', '1', '2')
#define V4L2_PIX_FMT_ABGR444 v4l2_fourcc('A', 'B', '1', '2')
#define V4L2_PIX_FMT_XBGR444 v4l2_fourcc('X', 'B', '1', '2')
-#define V4L2_PIX_FMT_BGRA444 v4l2_fourcc('B', 'A', '1', '2')
+#define V4L2_PIX_FMT_BGRA444 v4l2_fourcc('G', 'A', '1', '2')
#define V4L2_PIX_FMT_BGRX444 v4l2_fourcc('B', 'X', '1', '2')
#define V4L2_PIX_FMT_RGB555 v4l2_fourcc('R', 'G', 'B', 'O')
#define V4L2_PIX_FMT_ARGB555 v4l2_fourcc('A', 'R', '1', '5')
diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index c3b9e2c..9b39bb8 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -1493,6 +1493,8 @@
cnd_signal;
cnd_timedwait;
cnd_wait;
+ memfd_create;
+ mlock2;
mtx_destroy;
mtx_init;
mtx_lock;
diff --git a/libc/private/bionic_globals.h b/libc/private/bionic_globals.h
index d73079e..ef735ba 100644
--- a/libc/private/bionic_globals.h
+++ b/libc/private/bionic_globals.h
@@ -88,6 +88,10 @@
TlsModules tls_modules;
BionicAllocator tls_allocator;
+ // Values passed from the HWASan runtime (via libc.so) to the loader.
+ void (*load_hook)(ElfW(Addr) base, const ElfW(Phdr)* phdr, ElfW(Half) phnum) = nullptr;
+ void (*unload_hook)(ElfW(Addr) base, const ElfW(Phdr)* phdr, ElfW(Half) phnum) = nullptr;
+
// Values passed from the linker to libc.so.
const char* init_progname = nullptr;
char** init_environ = nullptr;
diff --git a/linker/linker.cpp b/linker/linker.cpp
index df7dd40..0361a8a 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -1905,6 +1905,9 @@
!get_cfi_shadow()->AfterLoad(si, solist_get_head())) {
return false;
}
+ if (__libc_shared_globals()->load_hook) {
+ __libc_shared_globals()->load_hook(si->load_bias, si->phdr, si->phnum);
+ }
}
return true;
@@ -2039,6 +2042,9 @@
si);
notify_gdb_of_unload(si);
unregister_soinfo_tls(si);
+ if (__libc_shared_globals()->unload_hook) {
+ __libc_shared_globals()->unload_hook(si->load_bias, si->phdr, si->phnum);
+ }
get_cfi_shadow()->BeforeUnload(si);
soinfo_free(si);
}
diff --git a/tests/dlext_test.cpp b/tests/dlext_test.cpp
index 67ebf37..59cf2f7 100644
--- a/tests/dlext_test.cpp
+++ b/tests/dlext_test.cpp
@@ -29,9 +29,7 @@
#include <android-base/file.h>
#include <android-base/strings.h>
-#include <linux/memfd.h>
#include <sys/mman.h>
-#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/vfs.h>
#include <sys/wait.h>
@@ -942,7 +940,7 @@
const std::string lib_path = GetTestlibRoot() + "/libtest_simple.so";
// create memfd
- int memfd = syscall(__NR_memfd_create, "foobar", MFD_CLOEXEC);
+ int memfd = memfd_create("foobar", MFD_CLOEXEC);
if (memfd == -1 && errno == ENOSYS) {
return;
}
diff --git a/tests/sys_mman_test.cpp b/tests/sys_mman_test.cpp
index 0b98198..e403ea5 100644
--- a/tests/sys_mman_test.cpp
+++ b/tests/sys_mman_test.cpp
@@ -230,7 +230,10 @@
TEST(sys_mman, mremap_PTRDIFF_MAX) {
void* map = mmap(nullptr, PAGE_SIZE, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
ASSERT_NE(MAP_FAILED, map);
+
ASSERT_EQ(MAP_FAILED, mremap(map, PAGE_SIZE, kHuge, MREMAP_MAYMOVE));
+
+ ASSERT_EQ(0, munmap(map, PAGE_SIZE));
}
TEST(sys_mman, mmap_bug_27265969) {
@@ -239,3 +242,61 @@
// Some kernels had bugs that would cause segfaults here...
__builtin___clear_cache(base, base + (PAGE_SIZE * 2));
}
+
+TEST(sys_mman, mlock) {
+ void* map = mmap(nullptr, PAGE_SIZE, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+ ASSERT_NE(MAP_FAILED, map);
+
+ // Not really anything we can assert about this.
+ mlock(map, PAGE_SIZE);
+
+ ASSERT_EQ(0, munmap(map, PAGE_SIZE));
+}
+
+TEST(sys_mman, mlock2) {
+#if defined(__GLIBC__)
+ GTEST_SKIP() << "needs glibc 2.27";
+#else
+ void* map = mmap(nullptr, PAGE_SIZE, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+ ASSERT_NE(MAP_FAILED, map);
+
+ // Not really anything we can assert about this.
+ mlock2(map, PAGE_SIZE, MLOCK_ONFAULT);
+
+ ASSERT_EQ(0, munmap(map, PAGE_SIZE));
+#endif
+}
+
+TEST(sys_mman, memfd_create) {
+#if defined(__GLIBC__)
+ GTEST_SKIP() << "needs glibc 2.27";
+#else
+ // Is the MFD_CLOEXEC flag obeyed?
+ errno = 0;
+ int fd = memfd_create("doesn't matter", 0);
+ if (fd == -1) {
+ ASSERT_EQ(ENOSYS, errno);
+ GTEST_SKIP() << "no memfd_create available";
+ }
+ int f = fcntl(fd, F_GETFD);
+ ASSERT_NE(-1, f);
+ ASSERT_FALSE(f & FD_CLOEXEC);
+ close(fd);
+
+ errno = 0;
+ fd = memfd_create("doesn't matter", MFD_CLOEXEC);
+ f = fcntl(fd, F_GETFD);
+ ASSERT_NE(-1, f);
+ ASSERT_TRUE(f & FD_CLOEXEC);
+
+ // Can we read and write?
+ std::string expected("hello, world!");
+ ASSERT_TRUE(android::base::WriteStringToFd(expected, fd));
+ ASSERT_EQ(0, lseek(fd, 0, SEEK_SET));
+ std::string actual;
+ ASSERT_TRUE(android::base::ReadFdToString(fd, &actual));
+ ASSERT_EQ(expected, actual);
+
+ close(fd);
+#endif
+}