diff options
author | cvs2svn <> | 2006-03-21 03:57:35 +0300 |
---|---|---|
committer | cvs2svn <> | 2006-03-21 03:57:35 +0300 |
commit | f84325d0899e5052fd59892ece265f7c2bd6c6a7 (patch) | |
tree | fdbea2e5c834b2c023ecd6f1f15ea1474186a4e1 /winsup/cygwin/mmap.cc | |
parent | 3078fb4f360e44b436bafcd9e7c51f26792e34b4 (diff) |
This commit was manufactured by cvs2svn to create branch 'newlib-newlib-csl-20060320-branchpoint
csl-20060320-branch'.
Sprout from master 2006-03-21 00:57:34 UTC Mark Mitchell <mark@codesourcery.com> ' * acconfig.h (_ATEXIT_DYNAMIC_ALLOC): Undef.'
Cherrypick from cygnus 1999-05-03 07:29:06 UTC Richard Henderson <rth@redhat.com> '19990502 sourceware import':
README
config/mh-armpic
config/mh-elfalphapic
config/mh-m68kpic
config/mh-papic
config/mh-ppcpic
config/mh-x86pic
config/mt-d30v
config/mt-netware
config/mt-ospace
etc/add-log.el
etc/add-log.vi
etc/configbuild.ein
etc/configbuild.fig
etc/configbuild.jin
etc/configbuild.tin
etc/configdev.ein
etc/configdev.fig
etc/configdev.jin
etc/configdev.tin
etc/configure
etc/configure.in
makefile.vms
Delete:
compile
djunpack.bat
include/COPYING
include/ChangeLog
include/ChangeLog-9103
include/MAINTAINERS
include/alloca-conf.h
include/ansidecl.h
include/aout/ChangeLog
include/aout/adobe.h
include/aout/aout64.h
include/aout/ar.h
include/aout/dynix3.h
include/aout/encap.h
include/aout/host.h
include/aout/hp.h
include/aout/hp300hpux.h
include/aout/hppa.h
include/aout/ranlib.h
include/aout/reloc.h
include/aout/stab.def
include/aout/stab_gnu.h
include/aout/sun4.h
include/bfdlink.h
include/bin-bugs.h
include/bout.h
include/coff/ChangeLog
include/coff/ChangeLog-9103
include/coff/alpha.h
include/coff/apollo.h
include/coff/arm.h
include/coff/aux-coff.h
include/coff/ecoff.h
include/coff/external.h
include/coff/go32exe.h
include/coff/h8300.h
include/coff/h8500.h
include/coff/i386.h
include/coff/i860.h
include/coff/i960.h
include/coff/ia64.h
include/coff/internal.h
include/coff/m68k.h
include/coff/m88k.h
include/coff/maxq.h
include/coff/mcore.h
include/coff/mips.h
include/coff/mipspe.h
include/coff/or32.h
include/coff/pe.h
include/coff/powerpc.h
include/coff/rs6000.h
include/coff/rs6k64.h
include/coff/sh.h
include/coff/sparc.h
include/coff/sym.h
include/coff/symconst.h
include/coff/ti.h
include/coff/tic30.h
include/coff/tic4x.h
include/coff/tic54x.h
include/coff/tic80.h
include/coff/w65.h
include/coff/we32k.h
include/coff/xcoff.h
include/coff/z80.h
include/coff/z8k.h
include/demangle.h
include/dis-asm.h
include/dyn-string.h
include/elf/ChangeLog
include/elf/ChangeLog-9103
include/elf/alpha.h
include/elf/arc.h
include/elf/arm.h
include/elf/avr.h
include/elf/bfin.h
include/elf/common.h
include/elf/cr16c.h
include/elf/cris.h
include/elf/crx.h
include/elf/d10v.h
include/elf/d30v.h
include/elf/dlx.h
include/elf/dwarf.h
include/elf/dwarf2.h
include/elf/external.h
include/elf/fr30.h
include/elf/frv.h
include/elf/h8.h
include/elf/hppa.h
include/elf/i370.h
include/elf/i386.h
include/elf/i860.h
include/elf/i960.h
include/elf/ia64.h
include/elf/internal.h
include/elf/ip2k.h
include/elf/iq2000.h
include/elf/m32c.h
include/elf/m32r.h
include/elf/m68hc11.h
include/elf/m68k.h
include/elf/mcore.h
include/elf/mips.h
include/elf/mmix.h
include/elf/mn10200.h
include/elf/mn10300.h
include/elf/msp430.h
include/elf/mt.h
include/elf/openrisc.h
include/elf/or32.h
include/elf/pj.h
include/elf/ppc.h
include/elf/ppc64.h
include/elf/reloc-macros.h
include/elf/s390.h
include/elf/sh.h
include/elf/sparc.h
include/elf/v850.h
include/elf/vax.h
include/elf/x86-64.h
include/elf/xc16x.h
include/elf/xstormy16.h
include/elf/xtensa.h
include/fibheap.h
include/filenames.h
include/floatformat.h
include/fnmatch.h
include/fopen-bin.h
include/fopen-same.h
include/fopen-vms.h
include/gdb/ChangeLog
include/gdb/callback.h
include/gdb/fileio.h
include/gdb/remote-sim.h
include/gdb/signals.h
include/gdb/sim-arm.h
include/gdb/sim-d10v.h
include/gdb/sim-frv.h
include/gdb/sim-h8300.h
include/gdb/sim-m32c.h
include/gdb/sim-ppc.h
include/gdb/sim-sh.h
include/gdbm.h
include/getopt.h
include/hashtab.h
include/hp-symtab.h
include/ieee.h
include/libiberty.h
include/md5.h
include/nlm/ChangeLog
include/nlm/alpha-ext.h
include/nlm/common.h
include/nlm/external.h
include/nlm/i386-ext.h
include/nlm/internal.h
include/nlm/ppc-ext.h
include/nlm/sparc32-ext.h
include/oasys.h
include/objalloc.h
include/obstack.h
include/opcode/ChangeLog
include/opcode/ChangeLog-9103
include/opcode/alpha.h
include/opcode/arc.h
include/opcode/arm.h
include/opcode/avr.h
include/opcode/bfin.h
include/opcode/cgen-bitset.h
include/opcode/cgen.h
include/opcode/convex.h
include/opcode/cris.h
include/opcode/crx.h
include/opcode/d10v.h
include/opcode/d30v.h
include/opcode/dlx.h
include/opcode/h8300.h
include/opcode/hppa.h
include/opcode/i370.h
include/opcode/i386.h
include/opcode/i860.h
include/opcode/i960.h
include/opcode/ia64.h
include/opcode/m68hc11.h
include/opcode/m68k.h
include/opcode/m88k.h
include/opcode/maxq.h
include/opcode/mips.h
include/opcode/mmix.h
include/opcode/mn10200.h
include/opcode/mn10300.h
include/opcode/msp430.h
include/opcode/np1.h
include/opcode/ns32k.h
include/opcode/or32.h
include/opcode/pdp11.h
include/opcode/pj.h
include/opcode/pn.h
include/opcode/ppc.h
include/opcode/pyr.h
include/opcode/s390.h
include/opcode/sparc.h
include/opcode/tahoe.h
include/opcode/tic30.h
include/opcode/tic4x.h
include/opcode/tic54x.h
include/opcode/tic80.h
include/opcode/v850.h
include/opcode/vax.h
include/os9k.h
include/partition.h
include/progress.h
include/safe-ctype.h
include/sort.h
include/splay-tree.h
include/symcat.h
include/ternary.h
include/xregex.h
include/xregex2.h
include/xtensa-config.h
include/xtensa-isa-internal.h
include/xtensa-isa.h
winsup/COPYING
winsup/CYGWIN_LICENSE
winsup/ChangeLog
winsup/Makefile.common
winsup/Makefile.in
winsup/README
winsup/configure
winsup/configure.in
winsup/cygserver/ChangeLog
winsup/cygserver/Makefile.in
winsup/cygserver/README
winsup/cygserver/bsd_helper.cc
winsup/cygserver/bsd_helper.h
winsup/cygserver/bsd_log.cc
winsup/cygserver/bsd_log.h
winsup/cygserver/bsd_mutex.cc
winsup/cygserver/bsd_mutex.h
winsup/cygserver/client.cc
winsup/cygserver/configure
winsup/cygserver/configure.in
winsup/cygserver/cygserver-config
winsup/cygserver/cygserver.cc
winsup/cygserver/cygserver.conf
winsup/cygserver/msg.cc
winsup/cygserver/process.cc
winsup/cygserver/process.h
winsup/cygserver/sem.cc
winsup/cygserver/shm.cc
winsup/cygserver/sysv_msg.cc
winsup/cygserver/sysv_sem.cc
winsup/cygserver/sysv_shm.cc
winsup/cygserver/threaded_queue.cc
winsup/cygserver/threaded_queue.h
winsup/cygserver/transport.cc
winsup/cygserver/transport.h
winsup/cygserver/transport_pipes.cc
winsup/cygserver/transport_pipes.h
winsup/cygserver/transport_sockets.cc
winsup/cygserver/transport_sockets.h
winsup/cygserver/wincap.cc
winsup/cygserver/wincap.h
winsup/cygserver/woutsup.h
winsup/cygwin/CYGWIN_LICENSE
winsup/cygwin/ChangeLog
winsup/cygwin/ChangeLog-1995
winsup/cygwin/ChangeLog-1996
winsup/cygwin/ChangeLog-1997
winsup/cygwin/ChangeLog-1998
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winsup/cygwin/ChangeLog-2004
winsup/cygwin/ChangeLog-2005
winsup/cygwin/Makefile.in
winsup/cygwin/ROADMAP
winsup/cygwin/acconfig.h
winsup/cygwin/analyze_sigfe
winsup/cygwin/ansi.sgml
winsup/cygwin/assert.cc
winsup/cygwin/autoload.cc
winsup/cygwin/automode.c
winsup/cygwin/binmode.c
winsup/cygwin/child_info.h
winsup/cygwin/config.h.in
winsup/cygwin/config/i386/profile.h
winsup/cygwin/configure
winsup/cygwin/configure.in
winsup/cygwin/cpuid.h
winsup/cygwin/crt0.c
winsup/cygwin/ctype.cc
winsup/cygwin/cxx.cc
winsup/cygwin/cygerrno.h
winsup/cygwin/cygheap.cc
winsup/cygwin/cygheap.h
winsup/cygwin/cygmagic
winsup/cygwin/cygmalloc.h
winsup/cygwin/cygserver.h
winsup/cygwin/cygserver_ipc.h
winsup/cygwin/cygserver_msg.h
winsup/cygwin/cygserver_sem.h
winsup/cygwin/cygserver_shm.h
winsup/cygwin/cygthread.cc
winsup/cygwin/cygthread.h
winsup/cygwin/cygtls.cc
winsup/cygwin/cygtls.h
winsup/cygwin/cygwin-shilka
winsup/cygwin/cygwin.din
winsup/cygwin/cygwin.sc
winsup/cygwin/cygwin_version.h
winsup/cygwin/dcrt0.cc
winsup/cygwin/debug.cc
winsup/cygwin/debug.h
winsup/cygwin/delqueue.cc
winsup/cygwin/devices.cc
winsup/cygwin/devices.h
winsup/cygwin/devices.in
winsup/cygwin/dir.cc
winsup/cygwin/dlfcn.cc
winsup/cygwin/dll_init.cc
winsup/cygwin/dll_init.h
winsup/cygwin/dll_init.sgml
winsup/cygwin/dllfixdbg
winsup/cygwin/dlmalloc.c
winsup/cygwin/dlmalloc.h
winsup/cygwin/dtable.cc
winsup/cygwin/dtable.h
winsup/cygwin/dtable.sgml
winsup/cygwin/environ.cc
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winsup/cygwin/errno.cc
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winsup/cygwin/exec.cc
winsup/cygwin/external.cc
winsup/cygwin/external.sgml
winsup/cygwin/fcntl.cc
winsup/cygwin/fhandler.cc
winsup/cygwin/fhandler.h
winsup/cygwin/fhandler_clipboard.cc
winsup/cygwin/fhandler_console.cc
winsup/cygwin/fhandler_disk_file.cc
winsup/cygwin/fhandler_dsp.cc
winsup/cygwin/fhandler_fifo.cc
winsup/cygwin/fhandler_floppy.cc
winsup/cygwin/fhandler_mailslot.cc
winsup/cygwin/fhandler_mem.cc
winsup/cygwin/fhandler_netdrive.cc
winsup/cygwin/fhandler_nodevice.cc
winsup/cygwin/fhandler_proc.cc
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winsup/cygwin/fhandler_random.cc
winsup/cygwin/fhandler_raw.cc
winsup/cygwin/fhandler_registry.cc
winsup/cygwin/fhandler_serial.cc
winsup/cygwin/fhandler_socket.cc
winsup/cygwin/fhandler_tape.cc
winsup/cygwin/fhandler_termios.cc
winsup/cygwin/fhandler_tty.cc
winsup/cygwin/fhandler_virtual.cc
winsup/cygwin/fhandler_windows.cc
winsup/cygwin/fhandler_zero.cc
winsup/cygwin/flock.cc
winsup/cygwin/fork.cc
winsup/cygwin/gcrt0.c
winsup/cygwin/gendef
winsup/cygwin/gendevices
winsup/cygwin/gentls_offsets
winsup/cygwin/glob.c
winsup/cygwin/gmon.c
winsup/cygwin/gmon.h
winsup/cygwin/grp.cc
winsup/cygwin/heap.cc
winsup/cygwin/heap.h
winsup/cygwin/hires.h
winsup/cygwin/hookapi.cc
winsup/cygwin/how-autoload-works.txt
winsup/cygwin/how-cygheap-works.txt
winsup/cygwin/how-cygtls-works.txt
winsup/cygwin/how-fhandlers-work.txt
winsup/cygwin/how-signals-work.txt
winsup/cygwin/how-spawn-works.txt
winsup/cygwin/how-to-debug-cygwin.txt
winsup/cygwin/how-vfork-works.txt
winsup/cygwin/include/a.out.h
winsup/cygwin/include/arpa/ftp.h
winsup/cygwin/include/arpa/inet.h
winsup/cygwin/include/arpa/telnet.h
winsup/cygwin/include/asm/byteorder.h
winsup/cygwin/include/asm/socket.h
winsup/cygwin/include/asm/types.h
winsup/cygwin/include/byteswap.h
winsup/cygwin/include/ctype.h
winsup/cygwin/include/cygwin/_types.h
winsup/cygwin/include/cygwin/acl.h
winsup/cygwin/include/cygwin/config.h
winsup/cygwin/include/cygwin/core_dump.h
winsup/cygwin/include/cygwin/cygwin_dll.h
winsup/cygwin/include/cygwin/fs.h
winsup/cygwin/include/cygwin/grp.h
winsup/cygwin/include/cygwin/hdreg.h
winsup/cygwin/include/cygwin/icmp.h
winsup/cygwin/include/cygwin/if.h
winsup/cygwin/include/cygwin/in.h
winsup/cygwin/include/cygwin/in_systm.h
winsup/cygwin/include/cygwin/ipc.h
winsup/cygwin/include/cygwin/msg.h
winsup/cygwin/include/cygwin/mtio.h
winsup/cygwin/include/cygwin/rdevio.h
winsup/cygwin/include/cygwin/sem.h
winsup/cygwin/include/cygwin/shm.h
winsup/cygwin/include/cygwin/signal.h
winsup/cygwin/include/cygwin/socket.h
winsup/cygwin/include/cygwin/sockios.h
winsup/cygwin/include/cygwin/stat.h
winsup/cygwin/include/cygwin/stdlib.h
winsup/cygwin/include/cygwin/sys_time.h
winsup/cygwin/include/cygwin/sysproto.h
winsup/cygwin/include/cygwin/time.h
winsup/cygwin/include/cygwin/types.h
winsup/cygwin/include/cygwin/uio.h
winsup/cygwin/include/cygwin/utmp.h
winsup/cygwin/include/cygwin/version.h
winsup/cygwin/include/dlfcn.h
winsup/cygwin/include/elf.h
winsup/cygwin/include/endian.h
winsup/cygwin/include/err.h
winsup/cygwin/include/exceptions.h
winsup/cygwin/include/fcntl.h
winsup/cygwin/include/features.h
winsup/cygwin/include/fnmatch.h
winsup/cygwin/include/fts.h
winsup/cygwin/include/ftw.h
winsup/cygwin/include/getopt.h
winsup/cygwin/include/glob.h
winsup/cygwin/include/icmp.h
winsup/cygwin/include/inttypes.h
winsup/cygwin/include/io.h
winsup/cygwin/include/lastlog.h
winsup/cygwin/include/libgen.h
winsup/cygwin/include/limits.h
winsup/cygwin/include/machine/stdlib.h
winsup/cygwin/include/mapi.h
winsup/cygwin/include/memory.h
winsup/cygwin/include/mntent.h
winsup/cygwin/include/net/if.h
winsup/cygwin/include/netdb.h
winsup/cygwin/include/netinet/in.h
winsup/cygwin/include/netinet/in_systm.h
winsup/cygwin/include/netinet/ip.h
winsup/cygwin/include/netinet/ip_icmp.h
winsup/cygwin/include/netinet/tcp.h
winsup/cygwin/include/netinet/udp.h
winsup/cygwin/include/paths.h
winsup/cygwin/include/poll.h
winsup/cygwin/include/pthread.h
winsup/cygwin/include/pty.h
winsup/cygwin/include/sched.h
winsup/cygwin/include/search.h
winsup/cygwin/include/semaphore.h
winsup/cygwin/include/stdint.h
winsup/cygwin/include/strings.h
winsup/cygwin/include/sys/acl.h
winsup/cygwin/include/sys/cdefs.h
winsup/cygwin/include/sys/copying.dj
winsup/cygwin/include/sys/cygwin.h
winsup/cygwin/include/sys/dirent.h
winsup/cygwin/include/sys/elf32.h
winsup/cygwin/include/sys/elf64.h
winsup/cygwin/include/sys/elf_common.h
winsup/cygwin/include/sys/elf_generic.h
winsup/cygwin/include/sys/file.h
winsup/cygwin/include/sys/ioctl.h
winsup/cygwin/include/sys/ipc.h
winsup/cygwin/include/sys/lock.h
winsup/cygwin/include/sys/mman.h
winsup/cygwin/include/sys/mount.h
winsup/cygwin/include/sys/msg.h
winsup/cygwin/include/sys/mtio.h
winsup/cygwin/include/sys/param.h
winsup/cygwin/include/sys/poll.h
winsup/cygwin/include/sys/procfs.h
winsup/cygwin/include/sys/queue.h
winsup/cygwin/include/sys/resource.h
winsup/cygwin/include/sys/select.h
winsup/cygwin/include/sys/sem.h
winsup/cygwin/include/sys/shm.h
winsup/cygwin/include/sys/smallprint.h
winsup/cygwin/include/sys/socket.h
winsup/cygwin/include/sys/soundcard.h
winsup/cygwin/include/sys/statfs.h
winsup/cygwin/include/sys/statvfs.h
winsup/cygwin/include/sys/stdio.h
winsup/cygwin/include/sys/strace.h
winsup/cygwin/include/sys/syslog.h
winsup/cygwin/include/sys/sysmacros.h
winsup/cygwin/include/sys/sysproto.h
winsup/cygwin/include/sys/termio.h
winsup/cygwin/include/sys/termios.h
winsup/cygwin/include/sys/ttychars.h
winsup/cygwin/include/sys/uio.h
winsup/cygwin/include/sys/un.h
winsup/cygwin/include/sys/utime.h
winsup/cygwin/include/sys/utmp.h
winsup/cygwin/include/sys/utsname.h
winsup/cygwin/include/sys/vfs.h
winsup/cygwin/include/sys/wait.h
winsup/cygwin/include/sysexits.h
winsup/cygwin/include/syslog.h
winsup/cygwin/include/termio.h
winsup/cygwin/include/tzfile.h
winsup/cygwin/include/utmpx.h
winsup/cygwin/init.cc
winsup/cygwin/ioctl.cc
winsup/cygwin/ipc.cc
winsup/cygwin/lib/_cygwin_crt0_common.cc
winsup/cygwin/lib/crt0.h
winsup/cygwin/lib/cygwin_attach_dll.c
winsup/cygwin/lib/cygwin_crt0.c
winsup/cygwin/lib/dll_entry.c
winsup/cygwin/lib/dll_main.cc
winsup/cygwin/lib/libcmain.c
winsup/cygwin/lib/premain0.c
winsup/cygwin/lib/premain1.c
winsup/cygwin/lib/premain2.c
winsup/cygwin/lib/premain3.c
winsup/cygwin/lib/pseudo-reloc.c
winsup/cygwin/libc/bsdlib.cc
winsup/cygwin/libc/fnmatch.c
winsup/cygwin/libc/fts.c
winsup/cygwin/libc/ftw.c
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winsup/cygwin/libc/iruserok.c
winsup/cygwin/libc/memmem.cc
winsup/cygwin/libc/nftw.c
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winsup/cygwin/libc/timelocal.cc
winsup/cygwin/libc/timelocal.h
winsup/cygwin/localtime.cc
winsup/cygwin/lsearch.cc
winsup/cygwin/malloc.cc
winsup/cygwin/malloc_wrapper.cc
winsup/cygwin/mcount.c
winsup/cygwin/misc-std.sgml
winsup/cygwin/miscfuncs.cc
winsup/cygwin/mktemp.cc
winsup/cygwin/mkvers.sh
winsup/cygwin/mmap.cc
winsup/cygwin/msg.cc
winsup/cygwin/mtinfo.h
winsup/cygwin/net.cc
winsup/cygwin/netdb.cc
winsup/cygwin/newsym
winsup/cygwin/ntdll.h
winsup/cygwin/ntea.cc
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winsup/utils/aclocal.m4
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winsup/utils/configure.in
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winsup/w32api/lib/dnsapi.def
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winsup/w32api/lib/mswsock.def
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winsup/w32api/lib/nddeapi.def
winsup/w32api/lib/netapi32.def
winsup/w32api/lib/ntdll.def
winsup/w32api/lib/odbc32.def
winsup/w32api/lib/odbccp32.def
winsup/w32api/lib/ole32.def
winsup/w32api/lib/oleacc.def
winsup/w32api/lib/oleaut32.def
winsup/w32api/lib/olecli32.def
winsup/w32api/lib/oledlg.def
winsup/w32api/lib/olepro32.def
winsup/w32api/lib/olesvr32.def
winsup/w32api/lib/opengl32.def
winsup/w32api/lib/penwin32.def
winsup/w32api/lib/pkpd32.def
winsup/w32api/lib/powrprof.def
winsup/w32api/lib/psapi.def
winsup/w32api/lib/rapi.def
winsup/w32api/lib/rasapi32.def
winsup/w32api/lib/rasdlg.def
winsup/w32api/lib/res.rc
winsup/w32api/lib/rpcdce4.def
winsup/w32api/lib/rpcns4.def
winsup/w32api/lib/rpcrt4.def
winsup/w32api/lib/scrnsave.c
winsup/w32api/lib/secur32.def
winsup/w32api/lib/setupapi.def
winsup/w32api/lib/shell32.c
winsup/w32api/lib/shell32.def
winsup/w32api/lib/shfolder.def
winsup/w32api/lib/shlwapi.def
winsup/w32api/lib/snmpapi.def
winsup/w32api/lib/svrapi.def
winsup/w32api/lib/tapi32.def
winsup/w32api/lib/test.c
winsup/w32api/lib/th32.def
winsup/w32api/lib/thunk32.def
winsup/w32api/lib/url.def
winsup/w32api/lib/user32.def
winsup/w32api/lib/userenv.def
winsup/w32api/lib/uuid.c
winsup/w32api/lib/uxtheme.def
winsup/w32api/lib/vdmdbg.def
winsup/w32api/lib/version.def
winsup/w32api/lib/vfw32.mri
winsup/w32api/lib/win32spl.def
winsup/w32api/lib/wininet.def
winsup/w32api/lib/winmm.def
winsup/w32api/lib/winspool.def
winsup/w32api/lib/winstrm.def
winsup/w32api/lib/wldap32.def
winsup/w32api/lib/wow32.def
winsup/w32api/lib/ws2_32.c
winsup/w32api/lib/ws2_32.def
winsup/w32api/lib/wsnmp32.def
winsup/w32api/lib/wsock32.def
winsup/w32api/lib/wst.def
winsup/w32api/lib/wtsapi32.def
Diffstat (limited to 'winsup/cygwin/mmap.cc')
-rw-r--r-- | winsup/cygwin/mmap.cc | 2022 |
1 files changed, 0 insertions, 2022 deletions
diff --git a/winsup/cygwin/mmap.cc b/winsup/cygwin/mmap.cc deleted file mode 100644 index e58405594..000000000 --- a/winsup/cygwin/mmap.cc +++ /dev/null @@ -1,2022 +0,0 @@ -/* mmap.cc - - Copyright 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005, - 2006 Red Hat, Inc. - -This file is part of Cygwin. - -This software is a copyrighted work licensed under the terms of the -Cygwin license. Please consult the file "CYGWIN_LICENSE" for -details. */ - -#include "winsup.h" -#include <unistd.h> -#include <stdlib.h> -#include <stddef.h> -#include <sys/mman.h> -#include <sys/param.h> -#include "cygerrno.h" -#include "security.h" -#include "path.h" -#include "fhandler.h" -#include "dtable.h" -#include "cygheap.h" -#include "pinfo.h" -#include "sys/cygwin.h" -#include "ntdll.h" - -/* __PROT_ATTACH indicates an anonymous mapping which is supposed to be - attached to a file mapping for pages beyond the file's EOF. The idea - is to support mappings longer than the file, without the file growing - to mapping length (POSIX semantics). */ -#define __PROT_ATTACH 0x8000000 -/* Filler pages are the pages from the last file backed page to the next - 64K boundary. These pages are created as anonymous pages, but with - the same page protection as the file's pages, since POSIX applications - expect to be able to access this part the same way as the file pages. */ -#define __PROT_FILLER 0x4000000 - -#define PAGE_CNT(bytes) howmany((bytes),getpagesize()) - -#define PGBITS (sizeof (DWORD)*8) -#define MAPSIZE(pages) howmany ((pages), PGBITS) - -#define MAP_SET(n) (page_map[(n)/PGBITS] |= (1L << ((n) % PGBITS))) -#define MAP_CLR(n) (page_map[(n)/PGBITS] &= ~(1L << ((n) % PGBITS))) -#define MAP_ISSET(n) (page_map[(n)/PGBITS] & (1L << ((n) % PGBITS))) - -/* Used for anonymous mappings. */ -static fhandler_dev_zero fh_anonymous; -/* Used for reopening a disk file when necessary. */ -static fhandler_disk_file fh_disk_file; - -/* Small helpers to avoid having lots of flag bit tests in the code. */ -static inline bool -priv (int flags) -{ - return (flags & MAP_PRIVATE) == MAP_PRIVATE; -} - -static inline bool -fixed (int flags) -{ - return (flags & MAP_FIXED) == MAP_FIXED; -} - -static inline bool -anonymous (int flags) -{ - return (flags & MAP_ANONYMOUS) == MAP_ANONYMOUS; -} - -static inline bool -noreserve (int flags) -{ - return (flags & MAP_NORESERVE) == MAP_NORESERVE; -} - -static inline bool -autogrow (int flags) -{ - return (flags & MAP_AUTOGROW) == MAP_AUTOGROW; -} - -static inline bool -attached (int prot) -{ - return (prot & __PROT_ATTACH) == __PROT_ATTACH; -} - -static inline bool -filler (int prot) -{ - return (prot & __PROT_FILLER) == __PROT_FILLER; -} - -static inline DWORD -gen_create_protect (DWORD openflags, int flags) -{ - DWORD ret = PAGE_READONLY; - - if (priv (flags)) - ret = PAGE_WRITECOPY; - else if (openflags & GENERIC_WRITE) - ret = PAGE_READWRITE; - - /* Ignore EXECUTE permission on 9x. */ - if ((openflags & GENERIC_EXECUTE) - && wincap.virtual_protect_works_on_shared_pages ()) - ret <<= 4; - - return ret; -} - -/* Generate Windows protection flags from mmap prot and flag values. */ -static inline DWORD -gen_protect (int prot, int flags) -{ - DWORD ret = PAGE_NOACCESS; - - /* Attached pages are only reserved, but the protection must be a - valid value, so we just return PAGE_READWRITE. */ - if (attached (prot)) - return PAGE_EXECUTE_READWRITE; - - if (prot & PROT_WRITE) - ret = (priv (flags) && (!anonymous (flags) || filler (prot))) - ? PAGE_WRITECOPY : PAGE_READWRITE; - else if (prot & PROT_READ) - ret = PAGE_READONLY; - - /* Ignore EXECUTE permission on 9x. */ - if ((prot & PROT_EXEC) - && wincap.virtual_protect_works_on_shared_pages ()) - ret <<= 4; - - return ret; -} - -/* Generate Windows access flags from mmap prot and flag values. - Only used on 9x. PROT_EXEC not supported here since it's not - necessary. */ -static inline DWORD -gen_access (DWORD openflags, int flags) -{ - DWORD ret = FILE_MAP_READ; - if (priv (flags)) - ret = FILE_MAP_COPY; - else if (openflags & GENERIC_WRITE) - ret = priv (flags) ? FILE_MAP_COPY : FILE_MAP_WRITE; - return ret; -} - -/* OS specific wrapper functions for map/section functions. */ -static BOOL -VirtualProt9x (PVOID addr, SIZE_T len, DWORD prot, PDWORD oldprot) -{ - if (addr >= (caddr_t)0x80000000 && addr <= (caddr_t)0xBFFFFFFF) - return TRUE; /* FAKEALARM! */ - return VirtualProtect (addr, len, prot, oldprot); -} - -static BOOL -VirtualProtNT (PVOID addr, SIZE_T len, DWORD prot, PDWORD oldprot) -{ - return VirtualProtect (addr, len, prot, oldprot); -} - -static BOOL -VirtualProtEx9x (HANDLE parent, PVOID addr, SIZE_T len, DWORD prot, - PDWORD oldprot) -{ - if (addr >= (caddr_t)0x80000000 && addr <= (caddr_t)0xBFFFFFFF) - return TRUE; /* FAKEALARM! */ - return VirtualProtectEx (parent, addr, len, prot, oldprot); -} -static BOOL -VirtualProtExNT (HANDLE parent, PVOID addr, SIZE_T len, DWORD prot, - PDWORD oldprot) -{ - return VirtualProtectEx (parent, addr, len, prot, oldprot); -} - -/* This allows to stay lazy about VirtualProtect usage in subsequent code. */ -#define VirtualProtect(a,l,p,o) (mmap_func->VirtualProt((a),(l),(p),(o))) -#define VirtualProtectEx(h,a,l,p,o) (mmap_func->VirtualProtEx((h),(a),(l),(p),(o))) - -static HANDLE -CreateMapping9x (HANDLE fhdl, size_t len, _off64_t off, DWORD openflags, - int prot, int flags, const char *name) -{ - HANDLE h; - DWORD high, low; - - DWORD protect = gen_create_protect (openflags, flags); - - /* copy-on-write doesn't work properly on 9x with real files. While the - changes are not propagated to the file, they are visible to other - processes sharing the same file mapping object. Workaround: Don't - use named file mapping. That should work since sharing file - mappings only works reliable using named file mapping on 9x. - - On 9x/ME try first to open the mapping by name when opening a - shared file object. This is needed since 9x/ME only shares objects - between processes by name. What a mess... */ - - if (fhdl != INVALID_HANDLE_VALUE && !priv (flags)) - { - /* Grrr, the whole stuff is just needed to try to get a reliable - mapping of the same file. Even that uprising isn't bullet - proof but it does it's best... */ - char namebuf[CYG_MAX_PATH]; - cygwin_conv_to_full_posix_path (name, namebuf); - for (int i = strlen (namebuf) - 1; i >= 0; --i) - namebuf[i] = cyg_tolower (namebuf [i]); - - debug_printf ("named sharing"); - DWORD access = gen_access (openflags, flags); - /* Different access modes result in incompatible mappings. So we - create different maps per access mode by using different names. */ - switch (access) - { - case FILE_MAP_READ: - namebuf[0] = 'R'; - break; - case FILE_MAP_WRITE: - namebuf[0] = 'W'; - break; - case FILE_MAP_COPY: - namebuf[0] = 'C'; - break; - } - if (!(h = OpenFileMapping (access, TRUE, namebuf))) - h = CreateFileMapping (fhdl, &sec_none, protect, 0, 0, namebuf); - } - else if (fhdl == INVALID_HANDLE_VALUE) - { - /* Standard anonymous mapping needs non-zero len. */ - h = CreateFileMapping (fhdl, &sec_none, protect, 0, len, NULL); - } - else if (autogrow (flags)) - { - high = (off + len) >> 32; - low = (off + len) & UINT32_MAX; - /* Auto-grow only works if the protection is PAGE_READWRITE. So, - first we call CreateFileMapping with PAGE_READWRITE, then, if the - requested protection is different, we close the mapping and - reopen it again with the correct protection, if auto-grow worked. */ - h = CreateFileMapping (fhdl, &sec_none, PAGE_READWRITE, - high, low, NULL); - if (h && protect != PAGE_READWRITE) - { - CloseHandle (h); - h = CreateFileMapping (fhdl, &sec_none, protect, - high, low, NULL); - } - } - else - { - /* Zero len creates mapping for whole file. */ - h = CreateFileMapping (fhdl, &sec_none, protect, 0, 0, NULL); - } - return h; -} - -static HANDLE -CreateMappingNT (HANDLE fhdl, size_t len, _off64_t off, DWORD openflags, - int prot, int flags, const char *) -{ - HANDLE h; - NTSTATUS ret; - - LARGE_INTEGER sectionsize = { QuadPart: len }; - ULONG protect = gen_create_protect (openflags, flags); - ULONG attributes = attached (prot) ? SEC_RESERVE : SEC_COMMIT; - - OBJECT_ATTRIBUTES oa; - InitializeObjectAttributes (&oa, NULL, OBJ_INHERIT, NULL, - sec_none.lpSecurityDescriptor); - - if (fhdl == INVALID_HANDLE_VALUE) - { - /* Standard anonymous mapping needs non-zero len. */ - ret = NtCreateSection (&h, SECTION_ALL_ACCESS, &oa, - §ionsize, protect, attributes, NULL); - } - else if (autogrow (flags)) - { - /* Auto-grow only works if the protection is PAGE_READWRITE. So, - first we call NtCreateSection with PAGE_READWRITE, then, if the - requested protection is different, we close the mapping and - reopen it again with the correct protection, if auto-grow worked. */ - sectionsize.QuadPart += off; - ret = NtCreateSection (&h, SECTION_ALL_ACCESS, &oa, - §ionsize, PAGE_READWRITE, attributes, fhdl); - if (NT_SUCCESS (ret) && protect != PAGE_READWRITE) - { - CloseHandle (h); - ret = NtCreateSection (&h, SECTION_ALL_ACCESS, &oa, - §ionsize, protect, attributes, fhdl); - } - } - else - { - /* Zero len creates mapping for whole file and allows - AT_EXTENDABLE_FILE mapping, if we ever use it... */ - sectionsize.QuadPart = 0; - ret = NtCreateSection (&h, SECTION_ALL_ACCESS, &oa, - §ionsize, protect, attributes, fhdl); - } - if (!NT_SUCCESS (ret)) - { - h = NULL; - SetLastError (RtlNtStatusToDosError (ret)); - } - return h; -} - -void * -MapView9x (HANDLE h, void *addr, size_t len, DWORD openflags, - int prot, int flags, _off64_t off) -{ - DWORD high = off >> 32; - DWORD low = off & UINT32_MAX; - DWORD access = gen_access (openflags, flags); - void *base; - - /* Try mapping using the given address first, even if it's NULL. - If it failed, and addr was not NULL and flags is not MAP_FIXED, - try again with NULL address. */ - if (!addr) - base = MapViewOfFile (h, access, high, low, len); - else - { - base = MapViewOfFileEx (h, access, high, low, len, addr); - if (!base && !fixed (flags)) - base = MapViewOfFile (h, access, high, low, len); - } - debug_printf ("%x = MapViewOfFileEx (h:%x, access:%x, 0, off:%D, " - "len:%u, addr:%x)", base, h, access, off, len, addr); - return base; -} - -void * -MapViewNT (HANDLE h, void *addr, size_t len, DWORD openflags, - int prot, int flags, _off64_t off) -{ - NTSTATUS ret; - LARGE_INTEGER offset = { QuadPart:off }; - DWORD protect = gen_create_protect (openflags, flags); - void *base = addr; - ULONG commitsize = attached (prot) ? 0 : len; - ULONG viewsize = len; - ULONG alloc_type = base && !wincap.is_wow64 () ? AT_ROUND_TO_PAGE : 0; - - /* Try mapping using the given address first, even if it's NULL. - If it failed, and addr was not NULL and flags is not MAP_FIXED, - try again with NULL address. */ - ret = NtMapViewOfSection (h, GetCurrentProcess (), &base, 0, commitsize, - &offset, &viewsize, ViewShare, alloc_type, protect); - if (!NT_SUCCESS (ret) && addr && !fixed (flags)) - { - base = NULL; - ret = NtMapViewOfSection (h, GetCurrentProcess (), &base, 0, commitsize, - &offset, &viewsize, ViewShare, 0, protect); - } - if (!NT_SUCCESS (ret)) - { - base = NULL; - SetLastError (RtlNtStatusToDosError (ret)); - } - debug_printf ("%x = NtMapViewOfSection (h:%x, addr:%x, len:%u, off:%D, " - "protect:%x, type:%x)", base, h, addr, len, off, protect, 0); - return base; -} - -struct mmap_func_t -{ - HANDLE (*CreateMapping)(HANDLE, size_t, _off64_t, DWORD, int, int, - const char *); - void * (*MapView)(HANDLE, void *, size_t, DWORD, int, int, _off64_t); - BOOL (*VirtualProt)(PVOID, SIZE_T, DWORD, PDWORD); - BOOL (*VirtualProtEx)(HANDLE, PVOID, SIZE_T, DWORD, PDWORD); -}; - -mmap_func_t mmap_funcs_9x = -{ - CreateMapping9x, - MapView9x, - VirtualProt9x, - VirtualProtEx9x -}; - -mmap_func_t mmap_funcs_nt = -{ - CreateMappingNT, - MapViewNT, - VirtualProtNT, - VirtualProtExNT -}; - -mmap_func_t *mmap_func; - -void -mmap_init () -{ - mmap_func = wincap.is_winnt () ? &mmap_funcs_nt : &mmap_funcs_9x; -} - -/* Class structure used to keep a record of all current mmap areas - in a process. Needed for bookkeeping all mmaps in a process and - for duplicating all mmaps after fork() since mmaps are not propagated - to child processes by Windows. All information must be duplicated - by hand, see fixup_mmaps_after_fork(). - - The class structure: - - One member of class map per process, global variable mmapped_areas. - Contains a dynamic class list array. Each list entry represents all - mapping to a file, keyed by file descriptor and file name hash. - Each list entry contains a dynamic class mmap_record array. Each - mmap_record represents exactly one mapping. For each mapping, there's - an additional so called `page_map'. It's an array of bits, one bit - per mapped memory page. The bit is set if the page is accessible, - unset otherwise. */ - -class mmap_record -{ - private: - int fd; - HANDLE mapping_hdl; - DWORD openflags; - int prot; - int flags; - _off64_t offset; - DWORD len; - caddr_t base_address; - DWORD *page_map; - device dev; - - public: - mmap_record (int nfd, HANDLE h, DWORD of, int p, int f, _off64_t o, DWORD l, - caddr_t b) : - fd (nfd), - mapping_hdl (h), - openflags (of), - prot (p), - flags (f), - offset (o), - len (l), - base_address (b), - page_map (NULL) - { - dev.devn = 0; - if (fd >= 0 && !cygheap->fdtab.not_open (fd)) - dev = cygheap->fdtab[fd]->dev (); - else if (fd == -1) - dev.parse (FH_ZERO); - } - - int get_fd () const { return fd; } - HANDLE get_handle () const { return mapping_hdl; } - device& get_device () { return dev; } - int get_prot () const { return prot; } - int get_openflags () const { return openflags; } - int get_flags () const { return flags; } - bool priv () const { return ::priv (flags); } - bool fixed () const { return ::fixed (flags); } - bool anonymous () const { return ::anonymous (flags); } - bool noreserve () const { return ::noreserve (flags); } - bool autogrow () const { return ::autogrow (flags); } - bool attached () const { return ::attached (prot); } - bool filler () const { return ::filler (prot); } - _off64_t get_offset () const { return offset; } - DWORD get_len () const { return len; } - caddr_t get_address () const { return base_address; } - - bool alloc_page_map (); - void free_page_map () { if (page_map) cfree (page_map); } - - DWORD find_unused_pages (DWORD pages) const; - _off64_t map_pages (_off64_t off, DWORD len); - bool map_pages (caddr_t addr, DWORD len); - bool unmap_pages (caddr_t addr, DWORD len); - int access (caddr_t address); - - fhandler_base *alloc_fh (); - void free_fh (fhandler_base *fh); - - DWORD gen_create_protect () const - { return ::gen_create_protect (get_openflags (), get_flags ()); } - DWORD gen_protect () const - { return ::gen_protect (get_prot (), get_flags ()); } - DWORD gen_access () const - { return ::gen_access (get_openflags (), get_flags ()); } - bool compatible_flags (int fl) const; -}; - -class list -{ - private: - mmap_record *recs; - int nrecs, maxrecs; - int fd; - DWORD hash; - - public: - int get_fd () const { return fd; } - DWORD get_hash () const { return hash; } - mmap_record *get_record (int i) { return i >= nrecs ? NULL : recs + i; } - - bool anonymous () const { return fd == -1; } - void set (int nfd); - mmap_record *add_record (mmap_record r); - bool del_record (int i); - void free_recs () { if (recs) cfree (recs); } - mmap_record *search_record (_off64_t off, DWORD len); - long search_record (caddr_t addr, DWORD len, caddr_t &m_addr, DWORD &m_len, - long start); - caddr_t try_map (void *addr, size_t len, int flags, _off64_t off); -}; - -class map -{ - private: - list *lists; - unsigned nlists, maxlists; - - public: - list *get_list (unsigned i) { return i >= nlists ? NULL : lists + i; } - list *get_list_by_fd (int fd); - list *add_list (int fd); - void del_list (unsigned i); -}; - -/* This is the global map structure pointer. */ -static map mmapped_areas; - -bool -mmap_record::compatible_flags (int fl) const -{ -#define MAP_COMPATMASK (MAP_TYPE | MAP_NORESERVE) - return (get_flags () & MAP_COMPATMASK) == (fl & MAP_COMPATMASK); -} - -DWORD -mmap_record::find_unused_pages (DWORD pages) const -{ - DWORD mapped_pages = PAGE_CNT (get_len ()); - DWORD start; - - if (pages > mapped_pages) - return (DWORD)-1; - for (start = 0; start <= mapped_pages - pages; ++start) - if (!MAP_ISSET (start)) - { - DWORD cnt; - for (cnt = 0; cnt < pages; ++cnt) - if (MAP_ISSET (start + cnt)) - break; - if (cnt >= pages) - return start; - } - return (DWORD)-1; -} - -bool -mmap_record::alloc_page_map () -{ - /* Allocate one bit per page */ - if (!(page_map = (DWORD *) ccalloc (HEAP_MMAP, - MAPSIZE (PAGE_CNT (get_len ())), - sizeof (DWORD)))) - return false; - - DWORD start_protect = gen_create_protect (); - DWORD real_protect = gen_protect (); - if (real_protect != start_protect - && !VirtualProtect (get_address (), get_len (), - real_protect, &start_protect)) - system_printf ("Warning: VirtualProtect (addr: %p, len: 0x%x, " - "new_prot: 0x%x, old_prot: 0x%x), %E", - get_address (), get_len (), - real_protect, start_protect); - DWORD len = PAGE_CNT (get_len ()); - while (len-- > 0) - MAP_SET (len); - return true; -} - -_off64_t -mmap_record::map_pages (_off64_t off, DWORD len) -{ - /* Used ONLY if this mapping matches into the chunk of another already - performed mapping in a special case of MAP_ANON|MAP_PRIVATE. - - Otherwise it's job is now done by alloc_page_map(). */ - DWORD old_prot; - debug_printf ("map_pages (fd=%d, off=%D, len=%u)", get_fd (), off, len); - len = PAGE_CNT (len); - - if ((off = find_unused_pages (len)) == (DWORD)-1) - return 0L; - if (!noreserve () - && !VirtualProtect (get_address () + off * getpagesize (), - len * getpagesize (), gen_protect (), &old_prot)) - { - __seterrno (); - return (_off64_t)-1; - } - - while (len-- > 0) - MAP_SET (off + len); - return off * getpagesize (); -} - -bool -mmap_record::map_pages (caddr_t addr, DWORD len) -{ - debug_printf ("map_pages (addr=%x, len=%u)", addr, len); - DWORD old_prot; - DWORD off = addr - get_address (); - off /= getpagesize (); - len = PAGE_CNT (len); - /* First check if the area is unused right now. */ - for (DWORD l = 0; l < len; ++l) - if (MAP_ISSET (off + l)) - { - set_errno (EINVAL); - return false; - } - if (!noreserve () - && !VirtualProtect (get_address () + off * getpagesize (), - len * getpagesize (), gen_protect (), &old_prot)) - { - __seterrno (); - return false; - } - for (; len-- > 0; ++off) - MAP_SET (off); - return true; -} - -bool -mmap_record::unmap_pages (caddr_t addr, DWORD len) -{ - DWORD old_prot; - DWORD off = addr - get_address (); - off /= getpagesize (); - len = PAGE_CNT (len); - if (anonymous () && priv () && noreserve () - && !VirtualFree (get_address () + off * getpagesize (), - len * getpagesize (), MEM_DECOMMIT)) - debug_printf ("VirtualFree in unmap_pages () failed, %E"); - else if (!VirtualProtect (get_address () + off * getpagesize (), - len * getpagesize (), PAGE_NOACCESS, &old_prot)) - debug_printf ("VirtualProtect in unmap_pages () failed, %E"); - - for (; len-- > 0; ++off) - MAP_CLR (off); - /* Return TRUE if all pages are free'd which may result in unmapping - the whole chunk. */ - for (len = MAPSIZE (PAGE_CNT (get_len ())); len > 0; ) - if (page_map[--len]) - return false; - return true; -} - -int -mmap_record::access (caddr_t address) -{ - if (address < get_address () || address >= get_address () + get_len ()) - return 0; - DWORD off = (address - get_address ()) / getpagesize (); - return MAP_ISSET (off); -} - -fhandler_base * -mmap_record::alloc_fh () -{ - if (anonymous ()) - { - fh_anonymous.set_io_handle (INVALID_HANDLE_VALUE); - fh_anonymous.set_access (GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE); - return &fh_anonymous; - } - - /* The file descriptor could have been closed or, even - worse, could have been reused for another file before - the call to fork(). This requires creating a fhandler - of the correct type to be sure to call the method of the - correct class. */ - fhandler_base *fh = build_fh_dev (get_device ()); - fh->set_access (get_openflags ()); - return fh; -} - -void -mmap_record::free_fh (fhandler_base *fh) -{ - if (!anonymous ()) - cfree (fh); -} - -mmap_record * -list::add_record (mmap_record r) -{ - if (nrecs == maxrecs) - { - mmap_record *new_recs; - if (maxrecs == 0) - new_recs = (mmap_record *) - cmalloc (HEAP_MMAP, 5 * sizeof (mmap_record)); - else - new_recs = (mmap_record *) - crealloc (recs, (maxrecs + 5) * sizeof (mmap_record)); - if (!new_recs) - return NULL; - maxrecs += 5; - recs = new_recs; - } - recs[nrecs] = r; - if (!recs[nrecs].alloc_page_map ()) - return NULL; - return recs + nrecs++; -} - -/* Used in mmap() */ -mmap_record * -list::search_record (_off64_t off, DWORD len) -{ - if (anonymous () && !off) - { - len = PAGE_CNT (len); - for (int i = 0; i < nrecs; ++i) - if (recs[i].find_unused_pages (len) != (DWORD)-1) - return recs + i; - } - else - { - for (int i = 0; i < nrecs; ++i) - if (off >= recs[i].get_offset () - && off + len <= recs[i].get_offset () - + (PAGE_CNT (recs[i].get_len ()) * getpagesize ())) - return recs + i; - } - return NULL; -} - -/* Used in munmap() */ -long -list::search_record (caddr_t addr, DWORD len, caddr_t &m_addr, DWORD &m_len, - long start) -{ - caddr_t low, high; - - for (long i = start + 1; i < nrecs; ++i) - { - low = (addr >= recs[i].get_address ()) ? addr : recs[i].get_address (); - high = recs[i].get_address (); - if (recs[i].filler ()) - high += recs[i].get_len (); - else - high += (PAGE_CNT (recs[i].get_len ()) * getpagesize ()); - high = (addr + len < high) ? addr + len : high; - if (low < high) - { - m_addr = low; - m_len = high - low; - return i; - } - } - return -1; -} - -void -list::set (int nfd) -{ - fd = nfd; - if (!anonymous ()) - { - /* The fd isn't sufficient since it could already be the fd of another - file. So we use the inode number as evaluated by fstat to identify - the file. */ - struct stat st; - fstat (nfd, &st); - hash = st.st_ino; - } - nrecs = maxrecs = 0; - recs = NULL; -} - -bool -list::del_record (int i) -{ - if (i < nrecs) - { - recs[i].free_page_map (); - for (; i < nrecs - 1; i++) - recs[i] = recs[i + 1]; - nrecs--; - } - /* Return true if the list is empty which allows the caller to remove - this list from the list array. */ - return !nrecs; -} - -caddr_t -list::try_map (void *addr, size_t len, int flags, _off64_t off) -{ - mmap_record *rec; - - if (off == 0 && !fixed (flags)) - { - /* If MAP_FIXED isn't given, check if this mapping matches into the - chunk of another already performed mapping. */ - if ((rec = search_record (off, len)) != NULL - && rec->compatible_flags (flags)) - { - if ((off = rec->map_pages (off, len)) == (_off64_t)-1) - return (caddr_t) MAP_FAILED; - return (caddr_t) rec->get_address () + off; - } - } - else if (fixed (flags)) - { - /* If MAP_FIXED is given, test if the requested area is in an - unmapped part of an still active mapping. This can happen - if a memory region is unmapped and remapped with MAP_FIXED. */ - caddr_t u_addr; - DWORD u_len; - long record_idx = -1; - if ((record_idx = search_record ((caddr_t) addr, len, u_addr, u_len, - record_idx)) >= 0) - { - rec = get_record (record_idx); - if (u_addr > (caddr_t) addr || u_addr + len < (caddr_t) addr + len - || !rec->compatible_flags (flags)) - { - /* Partial match only, or access mode doesn't match. */ - /* FIXME: Handle partial mappings gracefully if adjacent - memory is available. */ - set_errno (EINVAL); - return (caddr_t) MAP_FAILED; - } - if (!rec->map_pages ((caddr_t) addr, len)) - return (caddr_t) MAP_FAILED; - return (caddr_t) addr; - } - } - return NULL; -} - -list * -map::get_list_by_fd (int fd) -{ - unsigned i; - for (i = 0; i < nlists; i++) - { - if (fd == -1 && lists[i].anonymous ()) - return lists + i; - /* The fd isn't sufficient since it could already be the fd of another - file. So we use the inode number as evaluated by fstat to identify - the file. */ - struct stat st; - if (fd != -1 && !fstat (fd, &st) && lists[i].get_hash () == st.st_ino) - return lists + i; - } - return 0; -} - -list * -map::add_list (int fd) -{ - if (nlists == maxlists) - { - list *new_lists; - if (maxlists == 0) - new_lists = (list *) cmalloc (HEAP_MMAP, 5 * sizeof (list)); - else - new_lists = (list *) crealloc (lists, (maxlists + 5) * sizeof (list)); - if (!new_lists) - return NULL; - maxlists += 5; - lists = new_lists; - } - lists[nlists].set (fd); - return lists + nlists++; -} - -void -map::del_list (unsigned i) -{ - if (i < nlists) - { - lists[i].free_recs (); - for (; i < nlists - 1; i++) - lists[i] = lists[i + 1]; - nlists--; - } -} - -/* This function is called from exception_handler when a segmentation - violation has happened. The function should return true, if the - faulting address (the parameter) is within attached pages. In this - case the exception_handler raises SIGBUS, as demanded by the memory - protection extension described in SUSv3 (see the mmap man page). - If false is returned, a normal SIGSEGV is raised. */ -bool -mmap_is_attached_page (ULONG_PTR addr) -{ - list *map_list; - long record_idx; - caddr_t u_addr; - DWORD u_len; - DWORD pagesize = getsystempagesize (); - - addr = rounddown (addr, pagesize); - if (!(map_list = mmapped_areas.get_list_by_fd (-1))) - return false; - if ((record_idx = map_list->search_record ((caddr_t)addr, pagesize, - u_addr, u_len, -1)) < 0) - return false; - if (!map_list->get_record (record_idx)->attached ()) - return false; - return true; -} - -static caddr_t -mmap_worker (fhandler_base *fh, caddr_t base, size_t len, int prot, int flags, - int fd, _off64_t off) -{ - list *map_list; - HANDLE h = fh->mmap (&base, len, prot, flags, off); - if (h == INVALID_HANDLE_VALUE) - return NULL; - if (!(map_list = mmapped_areas.get_list_by_fd (fd)) - && !(map_list = mmapped_areas.add_list (fd))) - { - fh->munmap (h, base, len); - return NULL; - } - mmap_record mmap_rec (fd, h, fh->get_access (), prot, flags, off, len, base); - mmap_record *rec = map_list->add_record (mmap_rec); - if (!rec) - { - fh->munmap (h, base, len); - return NULL; - } - return base; -} - -extern "C" void * -mmap64 (void *addr, size_t len, int prot, int flags, int fd, _off64_t off) -{ - syscall_printf ("addr %x, len %u, prot %x, flags %x, fd %d, off %D", - addr, len, prot, flags, fd, off); - - caddr_t ret = (caddr_t) MAP_FAILED; - fhandler_base *fh = NULL; - list *map_list = NULL; - size_t orig_len = 0; - caddr_t base = NULL; - - DWORD pagesize = getpagesize (); - - fh_anonymous.set_io_handle (INVALID_HANDLE_VALUE); - fh_anonymous.set_access (GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE); - fh_disk_file.set_io_handle (NULL); - - SetResourceLock (LOCK_MMAP_LIST, READ_LOCK | WRITE_LOCK, "mmap"); - - /* EINVAL error conditions. Note that the addr%pagesize test is deferred - to workaround a serious alignment problem in Windows 98. */ - if (off % pagesize - || ((prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))) - || ((flags & MAP_TYPE) != MAP_SHARED - && (flags & MAP_TYPE) != MAP_PRIVATE) -#if 0 - || (fixed (flags) && ((uintptr_t) addr % pagesize)) -#endif - || !len) - { - set_errno (EINVAL); - goto out; - } - - /* There's a serious alignment problem in Windows 98. MapViewOfFile - sometimes returns addresses which are page aligned instead of - granularity aligned. OTOH, it's not possible to force such an - address using MapViewOfFileEx. So what we do here to let it work - at least most of the time is, allow 4K aligned addresses in 98, - to enable remapping of formerly mapped pages. If no matching - free pages exist, check addr again, this time for the real alignment. */ - DWORD checkpagesize = wincap.has_mmap_alignment_bug () ? - getsystempagesize () : pagesize; - if (fixed (flags) && ((uintptr_t) addr % checkpagesize)) - { - set_errno (EINVAL); - goto out; - } - - if (!anonymous (flags) && fd != -1) - { - /* Ensure that fd is open */ - cygheap_fdget cfd (fd); - if (cfd < 0) - goto out; - - fh = cfd; - - /* mmap /dev/zero is like MAP_ANONYMOUS. */ - if (fh->get_device () == FH_ZERO) - flags |= MAP_ANONYMOUS; - } - if (anonymous (flags) || fd == -1) - { - fh = &fh_anonymous; - fd = -1; - flags |= MAP_ANONYMOUS; - /* Anonymous mappings are always forced to pagesize length with - no offset. */ - len = roundup2 (len, pagesize); - off = 0; - } - else if (fh->get_device () == FH_FS) - { - /* EACCES error conditions according to SUSv3. File must be opened - for reading, regardless of the requested protection, and file must - be opened for writing when PROT_WRITE together with MAP_SHARED - is requested. */ - if (!(fh->get_access () & GENERIC_READ) - || (!(fh->get_access () & GENERIC_WRITE) - && (prot & PROT_WRITE) && !priv (flags))) - { - set_errno (EACCES); - goto out; - } - - /* On 9x you can't create mappings with PAGE_WRITECOPY protection if - the file isn't explicitely opened with WRITE access. */ - if (!wincap.is_winnt () && priv (flags) - && !(fh->get_access () & GENERIC_WRITE)) - { - HANDLE h = CreateFile (fh->get_win32_name (), - fh->get_access () | GENERIC_WRITE, - wincap.shared (), &sec_none_nih, - OPEN_EXISTING, 0, NULL); - if (h == INVALID_HANDLE_VALUE) - { - set_errno (EACCES); - goto out; - } - fh_disk_file.set_io_handle (h); - fh_disk_file.set_access (fh->get_access () | GENERIC_WRITE); - path_conv pc; - pc.set_name (fh->get_win32_name (), ""); - fh_disk_file.set_name (pc); - fh = &fh_disk_file; - } - - /* On NT you can't create mappings with PAGE_EXECUTE protection if - the file isn't explicitely opened with EXECUTE access. */ - if (wincap.is_winnt ()) - { - HANDLE h = CreateFile (fh->get_win32_name (), - fh->get_access () | GENERIC_EXECUTE, - wincap.shared (), &sec_none_nih, - OPEN_EXISTING, 0, NULL); - if (h != INVALID_HANDLE_VALUE) - { - fh_disk_file.set_io_handle (h); - fh_disk_file.set_access (fh->get_access () | GENERIC_EXECUTE); - fh = &fh_disk_file; - } - else if (prot & PROT_EXEC) - { - /* TODO: To be or not to be... I'm opting for refusing this - mmap request rather than faking it, but that might break - some non-portable code. */ - set_errno (EACCES); - goto out; - } - } - - DWORD high; - DWORD low = GetFileSize (fh->get_handle (), &high); - _off64_t fsiz = ((_off64_t)high << 32) + low; - - /* Don't allow file mappings beginning beyond EOF since Windows can't - handle that POSIX like, unless MAP_AUTOGROW flag is set, which - mimics Windows behaviour. */ - if (off >= fsiz && !autogrow (flags)) - { - /* Instead, it seems suitable to return an anonymous mapping of - the given size instead. Mapped addresses beyond EOF aren't - written back to the file anyway, so the handling is identical - to other pages beyond EOF. */ - fh = &fh_anonymous; - len = roundup2 (len, pagesize); - prot = PROT_READ | PROT_WRITE | __PROT_ATTACH; - flags &= MAP_FIXED; - flags |= MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE; - fd = -1; - off = 0; - goto go_ahead; - } - fsiz -= off; - /* On NT systems we're creating the pages beyond EOF as reserved, - anonymous pages. That's not possible on 9x for two reasons. - It neither allows to create reserved pages in the shared memory - area, nor does it allow to create page aligend mappings (in - contrast to granularity aligned mappings). - - Note that this isn't done in WOW64 environments since apparently - WOW64 does not support the AT_ROUND_TO_PAGE flag which is required - to get this right. Too bad. */ - if (wincap.virtual_protect_works_on_shared_pages () - && !wincap.is_wow64 () - && ((len > fsiz && !autogrow (flags)) - || len < pagesize)) - orig_len = len; - if (len > fsiz) - { - if (autogrow (flags)) - { - /* Allow mapping beyond EOF if MAP_AUTOGROW flag is set. - Check if file has been opened for writing, otherwise - MAP_AUTOGROW is invalid. */ - if (!(fh->get_access () & GENERIC_WRITE)) - { - set_errno (EINVAL); - goto out; - } - } - else - /* Otherwise, don't map beyond EOF, since Windows would change - the file to the new length, in contrast to POSIX. */ - len = fsiz; - } - - /* If the requested offset + len is <= file size, drop MAP_AUTOGROW. - This simplifes fhandler::mmap's job. */ - if (autogrow (flags) && (off + len) <= fsiz) - flags &= ~MAP_AUTOGROW; - } - -go_ahead: - - map_list = mmapped_areas.get_list_by_fd (fd); - - /* Test if an existing anonymous mapping can be recycled. */ - if (map_list && anonymous (flags)) - { - caddr_t tried = map_list->try_map (addr, len, flags, off); - /* try_map returns NULL if no map matched, otherwise it returns - a valid address, of MAP_FAILED in case of a fatal error. */ - if (tried) - { - ret = tried; - goto out; - } - } - - /* Deferred alignment test, see above. */ - if (wincap.has_mmap_alignment_bug () - && fixed (flags) && ((uintptr_t) addr % pagesize)) - { - set_errno (EINVAL); - goto out; - } - - base = mmap_worker (fh, (caddr_t) addr, len, prot, flags, fd, off); - if (!base) - goto out; - - if (orig_len) - { - /* If the requested length is bigger than the file size, the - remainder is created as anonymous mapping. Actually two - mappings are created, first the reminder from the file end to - the next 64K boundary as accessible pages with the same - protection as the file's pages, then as much pages as necessary - to accomodate the requested length, but as reserved pages which - raise a SIGBUS when trying to access them. AT_ROUND_TO_PAGE - and page protection on shared pages is only supported by 32 bit NT, - so don't even try on 9x and in WOW64. This is accomplished by not - setting orig_len on 9x and in WOW64 above. */ - orig_len = roundup2 (orig_len, pagesize); - len = roundup2 (len, getsystempagesize ()); - if (orig_len - len) - { - orig_len -= len; - size_t valid_page_len = orig_len % pagesize; - size_t sigbus_page_len = orig_len - valid_page_len; - - caddr_t at_base = base + len; - if (valid_page_len) - { - prot |= __PROT_FILLER; - flags &= MAP_SHARED | MAP_PRIVATE; - flags |= MAP_ANONYMOUS | MAP_FIXED; - at_base = mmap_worker (&fh_anonymous, at_base, valid_page_len, - prot, flags, -1, 0); - if (!at_base) - { - fh->munmap (fh->get_handle (), base, len); - set_errno (ENOMEM); - goto out; - } - at_base += valid_page_len; - } - if (sigbus_page_len) - { - prot = PROT_READ | PROT_WRITE | __PROT_ATTACH; - flags = MAP_ANONYMOUS | MAP_NORESERVE | MAP_FIXED; - at_base = mmap_worker (&fh_anonymous, at_base, sigbus_page_len, - prot, flags, -1, 0); - if (!at_base) - debug_printf ("Warning: Mapping beyond EOF failed, %E"); - } - } - } - - ret = base; - -out: - - ReleaseResourceLock (LOCK_MMAP_LIST, READ_LOCK | WRITE_LOCK, "mmap"); - - if (fh_disk_file.get_handle ()) - CloseHandle (fh_disk_file.get_handle ()); - - syscall_printf ("%p = mmap() ", ret); - return ret; -} - -extern "C" void * -mmap (void *addr, size_t len, int prot, int flags, int fd, _off_t off) -{ - return mmap64 (addr, len, prot, flags, fd, (_off64_t)off); -} - -/* munmap () removes all mmapped pages between addr and addr+len. */ - -extern "C" int -munmap (void *addr, size_t len) -{ - syscall_printf ("munmap (addr %x, len %u)", addr, len); - - /* Error conditions according to SUSv3 */ - if (!addr || !len || check_invalid_virtual_addr (addr, len)) - { - set_errno (EINVAL); - return -1; - } - /* See comment in mmap64 for a description. */ - size_t pagesize = wincap.has_mmap_alignment_bug () ? - getsystempagesize () : getpagesize (); - if (((uintptr_t) addr % pagesize) || !len) - { - set_errno (EINVAL); - return -1; - } - len = roundup2 (len, pagesize); - - SetResourceLock (LOCK_MMAP_LIST, WRITE_LOCK | READ_LOCK, "munmap"); - - /* Iterate through the map, unmap pages between addr and addr+len - in all maps. */ - list *map_list; - for (unsigned list_idx = 0; - (map_list = mmapped_areas.get_list (list_idx)); - ++list_idx) - { - long record_idx = -1; - caddr_t u_addr; - DWORD u_len; - - while ((record_idx = map_list->search_record((caddr_t)addr, len, u_addr, - u_len, record_idx)) >= 0) - { - mmap_record *rec = map_list->get_record (record_idx); - if (rec->unmap_pages (u_addr, u_len)) - { - /* The whole record has been unmapped, so we now actually - unmap it from the system in full length... */ - fhandler_base *fh = rec->alloc_fh (); - fh->munmap (rec->get_handle (), - rec->get_address (), - rec->get_len ()); - rec->free_fh (fh); - - /* ...and delete the record. */ - if (map_list->del_record (record_idx--)) - { - /* Yay, the last record has been removed from the list, - we can remove the list now, too. */ - mmapped_areas.del_list (list_idx--); - break; - } - } - } - } - - ReleaseResourceLock (LOCK_MMAP_LIST, WRITE_LOCK | READ_LOCK, "munmap"); - syscall_printf ("0 = munmap(): %x", addr); - return 0; -} - -/* Sync file with memory. Ignore flags for now. */ - -extern "C" int -msync (void *addr, size_t len, int flags) -{ - int ret = -1; - list *map_list; - - syscall_printf ("msync (addr: %p, len %u, flags %x)", addr, len, flags); - - SetResourceLock (LOCK_MMAP_LIST, WRITE_LOCK | READ_LOCK, "msync"); - - /* See comment in mmap64 for a description. */ - size_t pagesize = wincap.has_mmap_alignment_bug () ? - getsystempagesize () : getpagesize (); - if (((uintptr_t) addr % pagesize) - || (flags & ~(MS_ASYNC | MS_SYNC | MS_INVALIDATE)) - || (flags & (MS_ASYNC | MS_SYNC) == (MS_ASYNC | MS_SYNC))) - { - set_errno (EINVAL); - goto out; - } - len = roundup2 (len, pagesize); - - /* Iterate through the map, looking for the mmapped area. - Error if not found. */ - for (unsigned list_idx = 0; - (map_list = mmapped_areas.get_list (list_idx)); - ++list_idx) - { - mmap_record *rec; - for (int record_idx = 0; - (rec = map_list->get_record (record_idx)); - ++record_idx) - { - if (rec->access ((caddr_t)addr)) - { - /* Check whole area given by len. */ - for (DWORD i = getpagesize (); i < len; ++i) - if (!rec->access ((caddr_t)addr + i)) - { - set_errno (ENOMEM); - goto out; - } - fhandler_base *fh = rec->alloc_fh (); - ret = fh->msync (rec->get_handle (), (caddr_t)addr, len, flags); - rec->free_fh (fh); - goto out; - } - } - } - - /* No matching mapping exists. */ - set_errno (ENOMEM); - -out: - syscall_printf ("%d = msync()", ret); - ReleaseResourceLock (LOCK_MMAP_LIST, WRITE_LOCK | READ_LOCK, "msync"); - return ret; -} - -/* Set memory protection */ - -extern "C" int -mprotect (void *addr, size_t len, int prot) -{ - bool in_mapped = false; - bool ret = false; - DWORD old_prot; - DWORD new_prot = 0; - - syscall_printf ("mprotect (addr: %p, len %u, prot %x)", addr, len, prot); - - /* See comment in mmap64 for a description. */ - size_t pagesize = wincap.has_mmap_alignment_bug () ? - getsystempagesize () : getpagesize (); - if ((uintptr_t) addr % pagesize) - { - set_errno (EINVAL); - goto out; - } - len = roundup2 (len, pagesize); - - SetResourceLock (LOCK_MMAP_LIST, WRITE_LOCK | READ_LOCK, "mprotect"); - - /* Iterate through the map, protect pages between addr and addr+len - in all maps. */ - list *map_list; - for (unsigned list_idx = 0; - (map_list = mmapped_areas.get_list (list_idx)); - ++list_idx) - { - long record_idx = -1; - caddr_t u_addr; - DWORD u_len; - - while ((record_idx = map_list->search_record((caddr_t)addr, len, - u_addr, u_len, - record_idx)) >= 0) - { - mmap_record *rec = map_list->get_record (record_idx); - in_mapped = true; - if (rec->attached ()) - continue; - new_prot = gen_protect (prot, rec->get_flags ()); - if (rec->anonymous () && rec->priv () && rec->noreserve ()) - { - if (new_prot == PAGE_NOACCESS) - ret = VirtualFree (u_addr, u_len, MEM_DECOMMIT); - else - ret = !!VirtualAlloc (u_addr, u_len, MEM_COMMIT, new_prot); - } - else - ret = VirtualProtect (u_addr, u_len, new_prot, &old_prot); - if (!ret) - { - __seterrno (); - break; - } - } - } - - ReleaseResourceLock (LOCK_MMAP_LIST, WRITE_LOCK | READ_LOCK, "mprotect"); - - if (!in_mapped) - { - int flags = 0; - MEMORY_BASIC_INFORMATION mbi; - - ret = VirtualQuery (addr, &mbi, sizeof mbi); - if (ret) - { - /* If write protection is requested, check if the page was - originally protected writecopy. In this case call VirtualProtect - requesting PAGE_WRITECOPY, otherwise the VirtualProtect will fail - on NT version >= 5.0 */ - if (prot & PROT_WRITE) - { - if (mbi.AllocationProtect == PAGE_WRITECOPY - || mbi.AllocationProtect == PAGE_EXECUTE_WRITECOPY) - flags = MAP_PRIVATE; - } - new_prot = gen_protect (prot, flags); - if (new_prot != PAGE_NOACCESS && mbi.State == MEM_RESERVE) - ret = VirtualAlloc (addr, len, MEM_COMMIT, new_prot); - else - ret = VirtualProtect (addr, len, new_prot, &old_prot); - } - if (!ret) - __seterrno (); - } - -out: - - syscall_printf ("%d = mprotect ()", ret ? 0 : -1); - return ret ? 0 : -1; -} - -extern "C" int -mlock (const void *addr, size_t len) -{ - if (!wincap.has_working_virtual_lock ()) - return 0; - - int ret = -1; - - /* Instead of using VirtualLock, which does not guarantee that the pages - aren't swapped out when the process is inactive, we're using - ZwLockVirtualMemory with the LOCK_VM_IN_RAM flag to do what mlock on - POSIX systems does. On NT, this requires SeLockMemoryPrivilege, - which is given only to SYSTEM by default. */ - - push_thread_privilege (SE_LOCK_MEMORY_PRIV, true); - - /* Align address and length values to page size. */ - size_t pagesize = getpagesize (); - PVOID base = (PVOID) rounddown((uintptr_t) addr, pagesize); - ULONG size = roundup2 (((uintptr_t) addr - (uintptr_t) base) + len, pagesize); - NTSTATUS status = 0; - do - { - status = NtLockVirtualMemory (hMainProc, &base, &size, LOCK_VM_IN_RAM); - if (status == STATUS_WORKING_SET_QUOTA) - { - /* The working set is too small, try to increase it so that the - requested locking region fits in. Unfortunately I don't know - any function which would return the currently locked pages of - a process (no go with NtQueryVirtualMemory). - - So, except for the border cases, what we do here is something - really embarrassing. We raise the working set by 64K at a time - and retry, until either we fail to raise the working set size - further, or until NtLockVirtualMemory returns successfully (or - with another error). */ - ULONG min, max; - if (!GetProcessWorkingSetSize (hMainProc, &min, &max)) - { - set_errno (ENOMEM); - break; - } - if (min < size) - min = size + pagesize; - else if (size < pagesize) - min += size; - else - min += pagesize; - if (max < min) - max = min; - if (!SetProcessWorkingSetSize (hMainProc, min, max)) - { - set_errno (ENOMEM); - break; - } - } - else if (!NT_SUCCESS (status)) - __seterrno_from_nt_status (status); - else - ret = 0; - } - while (status == STATUS_WORKING_SET_QUOTA); - - pop_thread_privilege (); - - return ret; -} - -extern "C" int -munlock (const void *addr, size_t len) -{ - if (!wincap.has_working_virtual_lock ()) - return 0; - - int ret = -1; - - push_thread_privilege (SE_LOCK_MEMORY_PRIV, true); - - /* Align address and length values to page size. */ - size_t pagesize = getpagesize (); - PVOID base = (PVOID) rounddown((uintptr_t) addr, pagesize); - ULONG size = roundup2 (((uintptr_t) addr - (uintptr_t) base) + len, pagesize); - NTSTATUS status = NtUnlockVirtualMemory (hMainProc, &base, &size, - LOCK_VM_IN_RAM); - if (!NT_SUCCESS (status)) - __seterrno_from_nt_status (status); - else - ret = 0; - - pop_thread_privilege (); - - return ret; -} - -/* - * Base implementation: - * - * `mmap' returns ENODEV as documented in SUSv2. - * In contrast to the global function implementation, the member function - * `mmap' has to return the mapped base address in `addr' and the handle to - * the mapping object as return value. In case of failure, the fhandler - * mmap has to close that handle by itself and return INVALID_HANDLE_VALUE. - * - * `munmap' and `msync' get the handle to the mapping object as first parameter - * additionally. -*/ -HANDLE -fhandler_base::mmap (caddr_t *addr, size_t len, int prot, - int flags, _off64_t off) -{ - set_errno (ENODEV); - return INVALID_HANDLE_VALUE; -} - -int -fhandler_base::munmap (HANDLE h, caddr_t addr, size_t len) -{ - set_errno (ENODEV); - return -1; -} - -int -fhandler_base::msync (HANDLE h, caddr_t addr, size_t len, int flags) -{ - set_errno (ENODEV); - return -1; -} - -bool -fhandler_base::fixup_mmap_after_fork (HANDLE h, int prot, int flags, - _off64_t offset, DWORD size, - void *address) -{ - set_errno (ENODEV); - return -1; -} - -/* Implementation for anonymous maps. Using fhandler_dev_zero looks - quite the natural way. */ -HANDLE -fhandler_dev_zero::mmap (caddr_t *addr, size_t len, int prot, - int flags, _off64_t off) -{ - HANDLE h; - void *base; - - if (priv (flags) && !filler (prot)) - { - /* Private anonymous maps are now implemented using VirtualAlloc. - This has two advantages: - - - VirtualAlloc has a smaller footprint than a copy-on-write - anonymous map. - - - It supports decommitting using VirtualFree, in contrast to - section maps. This allows minimum footprint private maps, - when using the (non-POSIX, yay-Linux) MAP_NORESERVE flag. - */ - DWORD protect = gen_protect (prot, flags); - DWORD alloc_type = MEM_RESERVE | (noreserve (flags) ? 0 : MEM_COMMIT); - base = VirtualAlloc (*addr, len, alloc_type, protect); - if (!base && addr && !fixed (flags)) - base = VirtualAlloc (NULL, len, alloc_type, protect); - if (!base || (fixed (flags) && base != *addr)) - { - if (!base) - __seterrno (); - else - { - VirtualFree (base, 0, MEM_RELEASE); - set_errno (EINVAL); - debug_printf ("VirtualAlloc: address shift with MAP_FIXED given"); - } - return INVALID_HANDLE_VALUE; - } - h = (HANDLE) 1; /* Fake handle to indicate success. */ - } - else - { - h = mmap_func->CreateMapping (get_handle (), len, off, get_access (), - prot, flags, get_win32_name ()); - if (!h) - { - __seterrno (); - debug_printf ("CreateMapping failed with %E"); - return INVALID_HANDLE_VALUE; - } - - base = mmap_func->MapView (h, *addr, len, get_access(), prot, flags, off); - if (!base || (fixed (flags) && base != *addr)) - { - if (!base) - __seterrno (); - else - { - UnmapViewOfFile (base); - set_errno (EINVAL); - debug_printf ("MapView: address shift with MAP_FIXED given"); - } - CloseHandle (h); - return INVALID_HANDLE_VALUE; - } - } - *addr = (caddr_t) base; - return h; -} - -int -fhandler_dev_zero::munmap (HANDLE h, caddr_t addr, size_t len) -{ - if (h == (HANDLE) 1) /* See fhandler_dev_zero::mmap. */ - VirtualFree (addr, 0, MEM_RELEASE); - else - { - UnmapViewOfFile (addr); - CloseHandle (h); - } - return 0; -} - -int -fhandler_dev_zero::msync (HANDLE h, caddr_t addr, size_t len, int flags) -{ - return 0; -} - -bool -fhandler_dev_zero::fixup_mmap_after_fork (HANDLE h, int prot, int flags, - _off64_t offset, DWORD size, - void *address) -{ - /* Re-create the map */ - void *base; - if (priv (flags) && !filler (prot)) - { - DWORD alloc_type = MEM_RESERVE | (noreserve (flags) ? 0 : MEM_COMMIT); - /* Always allocate R/W so that ReadProcessMemory doesn't fail - due to a non-writable target address. The protection is - set to the correct one anyway in the fixup loop. */ - base = VirtualAlloc (address, size, alloc_type, PAGE_READWRITE); - } - else - base = mmap_func->MapView (h, address, size, get_access (), - prot, flags, offset); - if (base != address) - { - MEMORY_BASIC_INFORMATION m; - VirtualQuery (address, &m, sizeof (m)); - system_printf ("requested %p != %p mem alloc base %p, state %p, " - "size %d, %E", address, base, m.AllocationBase, m.State, - m.RegionSize); - } - return base == address; -} - -/* Implementation for disk files and anonymous mappings. */ -HANDLE -fhandler_disk_file::mmap (caddr_t *addr, size_t len, int prot, - int flags, _off64_t off) -{ - HANDLE h = mmap_func->CreateMapping (get_handle (), len, off, get_access (), - prot, flags, get_win32_name ()); - if (!h) - { - __seterrno (); - debug_printf ("CreateMapping failed with %E"); - return INVALID_HANDLE_VALUE; - } - - void *base = mmap_func->MapView (h, *addr, len, get_access (), - prot, flags, off); - if (!base || (fixed (flags) && base != *addr)) - { - if (!base) - __seterrno (); - else - { - UnmapViewOfFile (base); - set_errno (EINVAL); - debug_printf ("MapView: address shift with MAP_FIXED given"); - } - CloseHandle (h); - return INVALID_HANDLE_VALUE; - } - - *addr = (caddr_t) base; - return h; -} - -int -fhandler_disk_file::munmap (HANDLE h, caddr_t addr, size_t len) -{ - UnmapViewOfFile (addr); - CloseHandle (h); - return 0; -} - -int -fhandler_disk_file::msync (HANDLE h, caddr_t addr, size_t len, int flags) -{ - if (FlushViewOfFile (addr, len) == 0) - { - __seterrno (); - return -1; - } - return 0; -} - -bool -fhandler_disk_file::fixup_mmap_after_fork (HANDLE h, int prot, int flags, - _off64_t offset, DWORD size, - void *address) -{ - /* Re-create the map */ - void *base = mmap_func->MapView (h, address, size, get_access (), - prot, flags, offset); - if (base != address) - { - MEMORY_BASIC_INFORMATION m; - VirtualQuery (address, &m, sizeof (m)); - system_printf ("requested %p != %p mem alloc base %p, state %p, " - "size %d, %E", address, base, m.AllocationBase, m.State, - m.RegionSize); - } - return base == address; -} - -HANDLE -fhandler_dev_mem::mmap (caddr_t *addr, size_t len, int prot, - int flags, _off64_t off) -{ - if (off >= mem_size - || (DWORD) len >= mem_size - || off + len >= mem_size) - { - set_errno (EINVAL); - debug_printf ("-1 = mmap(): illegal parameter, set EINVAL"); - return INVALID_HANDLE_VALUE; - } - - UNICODE_STRING memstr; - RtlInitUnicodeString (&memstr, L"\\device\\physicalmemory"); - - OBJECT_ATTRIBUTES attr; - InitializeObjectAttributes (&attr, &memstr, - OBJ_CASE_INSENSITIVE | OBJ_INHERIT, - NULL, NULL); - - /* Section access is bit-wise ored, while on the Win32 level access - is only one of the values. It's not quite clear if the section - access has to be defined this way, or if SECTION_ALL_ACCESS would - be sufficient but this worked fine so far, so why change? */ - ACCESS_MASK section_access; - if (prot & PROT_WRITE) - section_access = SECTION_MAP_READ | SECTION_MAP_WRITE; - else - section_access = SECTION_MAP_READ; - - HANDLE h; - NTSTATUS ret = NtOpenSection (&h, section_access, &attr); - if (!NT_SUCCESS (ret)) - { - __seterrno_from_nt_status (ret); - debug_printf ("-1 = mmap(): NtOpenSection failed with %E"); - return INVALID_HANDLE_VALUE; - } - - void *base = MapViewNT (h, *addr, len, get_access (), - prot, flags | MAP_ANONYMOUS, off); - if (!base || (fixed (flags) && base != *addr)) - { - if (!base) - __seterrno (); - else - { - NtUnmapViewOfSection (GetCurrentProcess (), base); - set_errno (EINVAL); - debug_printf ("MapView: address shift with MAP_FIXED given"); - } - CloseHandle (h); - return INVALID_HANDLE_VALUE; - } - - *addr = (caddr_t) base; - return h; -} - -int -fhandler_dev_mem::munmap (HANDLE h, caddr_t addr, size_t len) -{ - NTSTATUS ret; - if (!NT_SUCCESS (ret = NtUnmapViewOfSection (INVALID_HANDLE_VALUE, addr))) - { - __seterrno_from_nt_status (ret); - return -1; - } - CloseHandle (h); - return 0; -} - -int -fhandler_dev_mem::msync (HANDLE h, caddr_t addr, size_t len, int flags) -{ - return 0; -} - -bool -fhandler_dev_mem::fixup_mmap_after_fork (HANDLE h, int prot, int flags, - _off64_t offset, DWORD size, - void *address) -{ - void *base = MapViewNT (h, address, size, get_access (), prot, - flags | MAP_ANONYMOUS, offset); - if (base != address) - { - MEMORY_BASIC_INFORMATION m; - VirtualQuery (address, &m, sizeof (m)); - system_printf ("requested %p != %p mem alloc base %p, state %p, " - "size %d, %E", address, base, m.AllocationBase, m.State, - m.RegionSize); - } - return base == address; -} - -/* Call to re-create all the file mappings in a forked child. Called from - the child in initialization. At this point we are passed a valid - mmapped_areas map, and all the HANDLE's are valid for the child, but - none of the mapped areas are in our address space. We need to iterate - through the map, doing the MapViewOfFile calls. */ - -int __stdcall -fixup_mmaps_after_fork (HANDLE parent) -{ - /* Iterate through the map */ - list *map_list; - for (unsigned list_idx = 0; - (map_list = mmapped_areas.get_list (list_idx)); - ++list_idx) - { - mmap_record *rec; - for (int record_idx = 0; - (rec = map_list->get_record (record_idx)); - ++record_idx) - { - debug_printf ("fd %d, h 0x%x, address %p, len 0x%x, prot: 0x%x, " - "flags: 0x%x, offset %X", - rec->get_fd (), rec->get_handle (), rec->get_address (), - rec->get_len (), rec->get_prot (), rec->get_flags (), - rec->get_offset ()); - - fhandler_base *fh = rec->alloc_fh (); - bool ret = fh->fixup_mmap_after_fork (rec->get_handle (), - rec->get_prot (), - rec->get_flags () | MAP_FIXED, - rec->get_offset (), - rec->get_len (), - rec->get_address ()); - rec->free_fh (fh); - - if (!ret) - { - if (rec->attached ()) - { - system_printf ("Warning: Fixup mapping beyond EOF failed"); - continue; - } - return -1; - } - - MEMORY_BASIC_INFORMATION mbi; - DWORD old_prot; - - for (char *address = rec->get_address (); - address < rec->get_address () + rec->get_len (); - address += mbi.RegionSize) - { - if (!VirtualQueryEx (parent, address, &mbi, sizeof mbi)) - { - system_printf ("VirtualQueryEx failed for MAP_PRIVATE " - "address %p, %E", address); - return -1; - } - /* Just skip reserved pages. */ - if (mbi.State == MEM_RESERVE) - continue; - /* Copy-on-write pages must be copied to the child to circumvent - a strange notion how copy-on-write is supposed to work. */ - if (rec->priv ()) - { - if (rec->anonymous () && rec->noreserve () - && !VirtualAlloc (address, mbi.RegionSize, - MEM_COMMIT, PAGE_READWRITE)) - { - system_printf ("VirtualAlloc failed for MAP_PRIVATE " - "address %p, %E", address); - return -1; - } - if (mbi.Protect == PAGE_NOACCESS - && !VirtualProtectEx (parent, address, mbi.RegionSize, - PAGE_READONLY, &old_prot)) - { - system_printf ("VirtualProtectEx failed for MAP_PRIVATE " - "address %p, %E", address); - return -1; - } - else if ((mbi.AllocationProtect == PAGE_WRITECOPY - || mbi.AllocationProtect == PAGE_EXECUTE_WRITECOPY) - && (mbi.Protect == PAGE_READWRITE - || mbi.Protect == PAGE_EXECUTE_READWRITE)) - /* A WRITECOPY page which has been written to is set to - READWRITE, but that's an incompatible protection to - set the page to. Convert the protection to WRITECOPY - so that the below VirtualProtect doesn't fail. */ - mbi.Protect <<= 1; - - if (!ReadProcessMemory (parent, address, address, - mbi.RegionSize, NULL)) - { - system_printf ("ReadProcessMemory failed for MAP_PRIVATE " - "address %p, %E", address); - return -1; - } - if (mbi.Protect == PAGE_NOACCESS - && !VirtualProtectEx (parent, address, mbi.RegionSize, - PAGE_NOACCESS, &old_prot)) - { - system_printf ("WARNING: VirtualProtectEx to return to " - "PAGE_NOACCESS state in parent failed for " - "MAP_PRIVATE address %p, %E", address); - return -1; - } - } - /* Set child page protection to parent protection */ - if (!VirtualProtect (address, mbi.RegionSize, - mbi.Protect, &old_prot)) - { - MEMORY_BASIC_INFORMATION m; - VirtualQuery (address, &m, sizeof m); - system_printf ("VirtualProtect failed for " - "address %p, " - "parentstate: 0x%x, " - "state: 0x%x, " - "parentprot: 0x%x, " - "prot: 0x%x, %E", - address, mbi.State, m.State, - mbi.Protect, m.Protect); - return -1; - } - } - } - } - - debug_printf ("succeeded"); - return 0; -} |