16 Sep
2020
16 Sep
'20
8:38 a.m.
https://git.reactos.org/?p=reactos.git;a=commitdiff;h=4fc82fc5bda5360f006c7…
commit 4fc82fc5bda5360f006c7dff35a5bfd527e66e04
Author: winesync <ros-dev(a)reactos.org>
AuthorDate: Fri Sep 11 16:57:25 2020 +0200
Commit: Jérôme Gardou <jerome.gardou(a)reactos.org>
CommitDate: Wed Sep 16 10:35:44 2020 +0200
[WINESYNC] dbghelp: Use Windows API to map ELF files.
Signed-off-by: Jacek Caban <jacek(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>
wine commit id a60b3985bf37827fd0b0f7583c31dcf52069b4a8 by Jacek Caban
<jacek(a)codeweavers.com>
---
dll/win32/dbghelp/elf_module.c | 168 +++++++++++++++++++++-----------------
dll/win32/dbghelp/image_private.h | 2 +-
sdk/tools/winesync/dbghelp.cfg | 2 +-
3 files changed, 95 insertions(+), 77 deletions(-)
diff --git a/dll/win32/dbghelp/elf_module.c b/dll/win32/dbghelp/elf_module.c
index 96b16fd5c0c..648169b9806 100644
--- a/dll/win32/dbghelp/elf_module.c
+++ b/dll/win32/dbghelp/elf_module.c
@@ -32,16 +32,6 @@
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
-#ifdef HAVE_SYS_STAT_H
-# include <sys/stat.h>
-#endif
-#include <fcntl.h>
-#ifdef HAVE_SYS_MMAN_H
-#include <sys/mman.h>
-#endif
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif
#include "dbghelp_private.h"
#include "winternl.h"
@@ -147,7 +137,9 @@ struct elf_module_info
const char* elf_map_section(struct image_section_map* ism)
{
struct elf_file_map* fmap = &ism->fmap->u.elf;
- size_t ofst, size, pgsz = sysconf( _SC_PAGESIZE );
+ SYSTEM_INFO sysinfo;
+ SIZE_T ofst, size;
+ HANDLE mapping;
assert(ism->fmap->modtype == DMT_ELF);
if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.elf.elfhdr.e_shnum
||
@@ -158,14 +150,24 @@ const char* elf_map_section(struct image_section_map* ism)
{
return fmap->target_copy + fmap->sect[ism->sidx].shdr.sh_offset;
}
- /* align required information on page size (we assume pagesize is a power of 2) */
- ofst = fmap->sect[ism->sidx].shdr.sh_offset & ~(pgsz - 1);
- size = ((fmap->sect[ism->sidx].shdr.sh_offset +
- fmap->sect[ism->sidx].shdr.sh_size + pgsz - 1) & ~(pgsz - 1)) -
ofst;
- fmap->sect[ism->sidx].mapped = mmap(NULL, size, PROT_READ, MAP_PRIVATE,
- fmap->fd, ofst);
- if (fmap->sect[ism->sidx].mapped == IMAGE_NO_MAP) return IMAGE_NO_MAP;
- return fmap->sect[ism->sidx].mapped +
(fmap->sect[ism->sidx].shdr.sh_offset & (pgsz - 1));
+
+ /* align required information on allocation granularity */
+ GetSystemInfo(&sysinfo);
+ ofst = fmap->sect[ism->sidx].shdr.sh_offset &
~(sysinfo.dwAllocationGranularity - 1);
+ size = fmap->sect[ism->sidx].shdr.sh_offset +
fmap->sect[ism->sidx].shdr.sh_size - ofst;
+ if (!(mapping = CreateFileMappingW(fmap->handle, NULL, PAGE_READONLY, 0, ofst +
size, NULL)))
+ {
+ ERR("map creation %p failed %u offset %lu %lu size %lu\n",
fmap->handle, GetLastError(), ofst, ofst % 4096, size);
+ return IMAGE_NO_MAP;
+ }
+ fmap->sect[ism->sidx].mapped = MapViewOfFile(mapping, FILE_MAP_READ, 0, ofst,
size);
+ CloseHandle(mapping);
+ if (!fmap->sect[ism->sidx].mapped)
+ {
+ ERR("map %p failed %u offset %lu %lu size %lu\n", fmap->handle,
GetLastError(), ofst, ofst % 4096, size);
+ return IMAGE_NO_MAP;
+ }
+ return fmap->sect[ism->sidx].mapped +
(fmap->sect[ism->sidx].shdr.sh_offset & (sysinfo.dwAllocationGranularity - 1));
}
/******************************************************************
@@ -215,15 +217,11 @@ void elf_unmap_section(struct image_section_map* ism)
struct elf_file_map* fmap = &ism->fmap->u.elf;
if (ism->sidx >= 0 && ism->sidx < fmap->elfhdr.e_shnum
&& !fmap->target_copy &&
- fmap->sect[ism->sidx].mapped != IMAGE_NO_MAP)
+ fmap->sect[ism->sidx].mapped)
{
- size_t pgsz = sysconf( _SC_PAGESIZE );
- size_t ofst = fmap->sect[ism->sidx].shdr.sh_offset & ~(pgsz - 1);
- size_t size = ((fmap->sect[ism->sidx].shdr.sh_offset +
- fmap->sect[ism->sidx].shdr.sh_size + pgsz - 1) & ~(pgsz - 1))
- ofst;
- if (munmap((char*)fmap->sect[ism->sidx].mapped, size) < 0)
+ if (!UnmapViewOfFile(fmap->sect[ism->sidx].mapped))
WARN("Couldn't unmap the section\n");
- fmap->sect[ism->sidx].mapped = IMAGE_NO_MAP;
+ fmap->sect[ism->sidx].mapped = NULL;
}
}
@@ -267,7 +265,7 @@ unsigned elf_get_map_size(const struct image_section_map* ism)
static inline void elf_reset_file_map(struct image_file_map* fmap)
{
- fmap->u.elf.fd = -1;
+ fmap->u.elf.handle = INVALID_HANDLE_VALUE;
fmap->u.elf.shstrtab = IMAGE_NO_MAP;
fmap->u.elf.alternate = NULL;
fmap->u.elf.target_copy = NULL;
@@ -293,12 +291,16 @@ struct elf_map_file_data
static BOOL elf_map_file_read(struct image_file_map* fmap, struct elf_map_file_data*
emfd,
void* buf, size_t len, off_t off)
{
+ LARGE_INTEGER li;
+ DWORD bytes_read;
SIZE_T dw;
switch (emfd->kind)
{
case from_file:
- return pread(fmap->u.elf.fd, buf, len, off) == len;
+ li.QuadPart = off;
+ if (!SetFilePointerEx(fmap->u.elf.handle, li, NULL, FILE_BEGIN)) return FALSE;
+ return ReadFile(fmap->u.elf.handle, buf, len, &bytes_read, NULL);
case from_process:
return ReadProcessMemory(emfd->u.process.handle,
(void*)((unsigned long)emfd->u.process.load_addr +
(unsigned long)off),
@@ -339,6 +341,29 @@ static BOOL elf_map_shdr(struct elf_map_file_data* emfd, struct
image_file_map*
return TRUE;
}
+static WCHAR *get_dos_file_name(const WCHAR *filename)
+{
+ WCHAR *dos_path;
+ size_t len;
+
+ if (*filename == '/')
+ {
+ char *unix_path;
+ len = WideCharToMultiByte(CP_UNIXCP, 0, filename, -1, NULL, 0, NULL, NULL);
+ unix_path = heap_alloc(len * sizeof(WCHAR));
+ WideCharToMultiByte(CP_UNIXCP, 0, filename, -1, unix_path, len, NULL, NULL);
+ dos_path = wine_get_dos_file_name(unix_path);
+ heap_free(unix_path);
+ }
+ else
+ {
+ len = lstrlenW(filename);
+ dos_path = heap_alloc((len + 1) * sizeof(WCHAR));
+ memcpy(dos_path, filename, (len + 1) * sizeof(WCHAR));
+ }
+ return dos_path;
+}
+
/******************************************************************
* elf_map_file
*
@@ -347,53 +372,35 @@ static BOOL elf_map_shdr(struct elf_map_file_data* emfd, struct
image_file_map*
static BOOL elf_map_file(struct elf_map_file_data* emfd, struct image_file_map* fmap)
{
static const BYTE elf_signature[4] = { ELFMAG0, ELFMAG1, ELFMAG2, ELFMAG3 };
- struct stat statbuf;
unsigned int i;
size_t tmp, page_mask = sysconf( _SC_PAGESIZE ) - 1;
- char* filename;
- unsigned len;
- BOOL ret = FALSE;
+ WCHAR *dos_path;
unsigned char e_ident[EI_NIDENT];
- switch (emfd->kind)
- {
- case from_file:
- len = WideCharToMultiByte(CP_UNIXCP, 0, emfd->u.file.filename, -1, NULL, 0,
NULL, NULL);
- if (!(filename = HeapAlloc(GetProcessHeap(), 0, len))) return FALSE;
- WideCharToMultiByte(CP_UNIXCP, 0, emfd->u.file.filename, -1, filename, len,
NULL, NULL);
- break;
- case from_process:
- filename = NULL;
- break;
- default: assert(0);
- return FALSE;
- }
-
elf_reset_file_map(fmap);
fmap->modtype = DMT_ELF;
- fmap->u.elf.fd = -1;
+ fmap->u.elf.handle = INVALID_HANDLE_VALUE;
fmap->u.elf.target_copy = NULL;
switch (emfd->kind)
{
case from_file:
- /* check that the file exists, and that the module hasn't been loaded yet */
- if (stat(filename, &statbuf) == -1 || S_ISDIR(statbuf.st_mode)) goto done;
-
- /* Now open the file, so that we can mmap() it. */
- if ((fmap->u.elf.fd = open(filename, O_RDONLY)) == -1) goto done;
+ if (!(dos_path = get_dos_file_name(emfd->u.file.filename))) return FALSE;
+ fmap->u.elf.handle = CreateFileW(dos_path, GENERIC_READ, FILE_SHARE_READ,
NULL, OPEN_EXISTING, 0, NULL);
+ heap_free(dos_path);
+ if (fmap->u.elf.handle == INVALID_HANDLE_VALUE) return FALSE;
break;
case from_process:
break;
}
if (!elf_map_file_read(fmap, emfd, e_ident, sizeof(e_ident), 0))
- goto done;
+ return FALSE;
/* and check for an ELF header */
if (memcmp(e_ident, elf_signature, sizeof(elf_signature)))
- goto done;
+ return FALSE;
fmap->addr_size = e_ident[EI_CLASS] == ELFCLASS64 ? 64 : 32;
@@ -402,7 +409,7 @@ static BOOL elf_map_file(struct elf_map_file_data* emfd, struct
image_file_map*
Elf32_Ehdr elfhdr32;
if (!elf_map_file_read(fmap, emfd, &elfhdr32, sizeof(elfhdr32), 0))
- goto done;
+ return FALSE;
memcpy(fmap->u.elf.elfhdr.e_ident, elfhdr32.e_ident, EI_NIDENT);
fmap->u.elf.elfhdr.e_type = elfhdr32.e_type;
@@ -422,12 +429,12 @@ static BOOL elf_map_file(struct elf_map_file_data* emfd, struct
image_file_map*
else
{
if (!elf_map_file_read(fmap, emfd, &fmap->u.elf.elfhdr,
sizeof(fmap->u.elf.elfhdr), 0))
- goto done;
+ return FALSE;
}
fmap->u.elf.sect = HeapAlloc(GetProcessHeap(), 0,
fmap->u.elf.elfhdr.e_shnum *
sizeof(fmap->u.elf.sect[0]));
- if (!fmap->u.elf.sect) goto done;
+ if (!fmap->u.elf.sect) return FALSE;
for (i = 0; i < fmap->u.elf.elfhdr.e_shnum; i++)
{
@@ -435,9 +442,9 @@ static BOOL elf_map_file(struct elf_map_file_data* emfd, struct
image_file_map*
{
HeapFree(GetProcessHeap(), 0, fmap->u.elf.sect);
fmap->u.elf.sect = NULL;
- goto done;
+ return FALSE;
}
- fmap->u.elf.sect[i].mapped = IMAGE_NO_MAP;
+ fmap->u.elf.sect[i].mapped = NULL;
}
/* grab size of module once loaded in memory */
@@ -484,21 +491,18 @@ static BOOL elf_map_file(struct elf_map_file_data* emfd, struct
image_file_map*
if (!(fmap->u.elf.target_copy = HeapAlloc(GetProcessHeap(), 0,
fmap->u.elf.elf_size)))
{
HeapFree(GetProcessHeap(), 0, fmap->u.elf.sect);
- goto done;
+ return FALSE;
}
if (!ReadProcessMemory(emfd->u.process.handle, emfd->u.process.load_addr,
fmap->u.elf.target_copy,
fmap->u.elf.elf_size, NULL))
{
HeapFree(GetProcessHeap(), 0, fmap->u.elf.target_copy);
HeapFree(GetProcessHeap(), 0, fmap->u.elf.sect);
- goto done;
+ return FALSE;
}
break;
}
- ret = TRUE;
-done:
- HeapFree(GetProcessHeap(), 0, filename);
- return ret;
+ return TRUE;
}
/******************************************************************
@@ -510,7 +514,7 @@ static void elf_unmap_file(struct image_file_map* fmap)
{
while (fmap)
{
- if (fmap->u.elf.fd != -1)
+ if (fmap->u.elf.handle != INVALID_HANDLE_VALUE)
{
struct image_section_map ism;
ism.fmap = fmap;
@@ -519,7 +523,7 @@ static void elf_unmap_file(struct image_file_map* fmap)
elf_unmap_section(&ism);
}
HeapFree(GetProcessHeap(), 0, fmap->u.elf.sect);
- close(fmap->u.elf.fd);
+ CloseHandle(fmap->u.elf.handle);
}
HeapFree(GetProcessHeap(), 0, fmap->u.elf.target_copy);
fmap = fmap->u.elf.alternate;
@@ -934,21 +938,35 @@ static int elf_new_public_symbols(struct module* module, const
struct hash_table
return TRUE;
}
-static BOOL elf_check_debug_link(const WCHAR* file, struct image_file_map* fmap, DWORD
crc)
+static DWORD calc_crc(HANDLE handle)
+{
+ BYTE buffer[8192];
+ DWORD crc = 0;
+ DWORD len;
+
+ SetFilePointer(handle, 0, 0, FILE_BEGIN);
+ while (ReadFile(handle, buffer, sizeof(buffer), &len, NULL) && len)
+ crc = RtlComputeCrc32(crc, buffer, len);
+ return crc;
+}
+
+static BOOL elf_check_debug_link(const WCHAR* file, struct image_file_map* fmap, DWORD
link_crc)
{
- BOOL ret;
struct elf_map_file_data emfd;
+ DWORD crc;
emfd.kind = from_file;
emfd.u.file.filename = file;
if (!elf_map_file(&emfd, fmap)) return FALSE;
- if (!(ret = crc == calc_crc32(fmap->u.elf.fd)))
+
+ crc = calc_crc(fmap->u.elf.handle);
+ if (crc != link_crc)
{
- WARN("Bad CRC for file %s (got %08x while expecting %08x)\n",
- debugstr_w(file), calc_crc32(fmap->u.elf.fd), crc);
+ WARN("Bad CRC for file %s (got %08x while expecting %08x)\n",
debugstr_w(file), crc, link_crc);
elf_unmap_file(fmap);
+ return FALSE;
}
- return ret;
+ return TRUE;
}
/******************************************************************
@@ -1290,7 +1308,7 @@ BOOL elf_fetch_file_info(const WCHAR* name, DWORD_PTR* base,
if (!elf_map_file(&emfd, &fmap)) return FALSE;
if (base) *base = fmap.u.elf.elf_start;
*size = fmap.u.elf.elf_size;
- *checksum = calc_crc32(fmap.u.elf.fd);
+ *checksum = calc_crc(fmap.u.elf.handle);
elf_unmap_file(&fmap);
return TRUE;
}
@@ -1386,7 +1404,7 @@ static BOOL elf_load_file_from_fmap(struct process* pcs, const
WCHAR* filename,
sizeof(struct module_format) + sizeof(struct elf_module_info));
if (!modfmt) return FALSE;
elf_info->module = module_new(pcs, filename, DMT_ELF, FALSE, modbase,
- fmap->u.elf.elf_size, 0,
calc_crc32(fmap->u.elf.fd));
+ fmap->u.elf.elf_size, 0,
calc_crc(fmap->u.elf.handle));
if (!elf_info->module)
{
HeapFree(GetProcessHeap(), 0, modfmt);
diff --git a/dll/win32/dbghelp/image_private.h b/dll/win32/dbghelp/image_private.h
index fd5a7c91d69..2d9b354f7a6 100644
--- a/dll/win32/dbghelp/image_private.h
+++ b/dll/win32/dbghelp/image_private.h
@@ -69,7 +69,7 @@ struct image_file_map
{
size_t elf_size;
size_t elf_start;
- int fd;
+ HANDLE handle;
const char* shstrtab;
struct image_file_map* alternate; /* another ELF file (linked to
this one) */
char* target_copy;
diff --git a/sdk/tools/winesync/dbghelp.cfg b/sdk/tools/winesync/dbghelp.cfg
index abdb0e40ad3..dc32ebbc6fe 100644
--- a/sdk/tools/winesync/dbghelp.cfg
+++ b/sdk/tools/winesync/dbghelp.cfg
@@ -4,4 +4,4 @@ files:
include/dbghelp.h: sdk/include/psdk/dbghelp.h
include/wine/mscvpdb.h: sdk/include/reactos/wine/mscvpdb.h
tags:
- wine: d731208602393877709d3bb0bdeb28c80f9719b0
+ wine: a60b3985bf37827fd0b0f7583c31dcf52069b4a8
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