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[Qemu-devel] [PATCH v2 3/6] contrib/elf2dmp: use GLib in PDB processing
From: |
Viktor Prutyanov |
Subject: |
[Qemu-devel] [PATCH v2 3/6] contrib/elf2dmp: use GLib in PDB processing |
Date: |
Thu, 20 Dec 2018 04:24:38 +0300 |
Replace POSIX mmap with GLib g_mapped_file_new in PDB processing stage
to make elf2dmp cross-platform. There are no direct POSIX in elf2dmp
after this patch.
Signed-off-by: Viktor Prutyanov <address@hidden>
---
contrib/elf2dmp/pdb.c | 29 ++++++++---------------------
contrib/elf2dmp/pdb.h | 2 +-
2 files changed, 9 insertions(+), 22 deletions(-)
diff --git a/contrib/elf2dmp/pdb.c b/contrib/elf2dmp/pdb.c
index bcb01b414f..52e352df79 100644
--- a/contrib/elf2dmp/pdb.c
+++ b/contrib/elf2dmp/pdb.c
@@ -277,28 +277,18 @@ static void pdb_reader_exit(struct pdb_reader *r)
int pdb_init_from_file(const char *name, struct pdb_reader *reader)
{
+ GError *gerr = NULL;
int err = 0;
- int fd;
void *map;
- struct stat st;
- fd = open(name, O_RDONLY, 0);
- if (fd == -1) {
- eprintf("Failed to open PDB file \'%s\'\n", name);
+ reader->gmf = g_mapped_file_new(name, TRUE, &gerr);
+ if (gerr) {
+ eprintf("Failed to map PDB file \'%s\'\n", name);
return 1;
}
- reader->fd = fd;
-
- fstat(fd, &st);
- reader->file_size = st.st_size;
-
- map = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
- if (map == MAP_FAILED) {
- eprintf("Failed to map PDB file\n");
- err = 1;
- goto out_fd;
- }
+ reader->file_size = g_mapped_file_get_length(reader->gmf);
+ map = g_mapped_file_get_contents(reader->gmf);
if (pdb_reader_init(reader, map)) {
err = 1;
goto out_unmap;
@@ -307,16 +297,13 @@ int pdb_init_from_file(const char *name, struct
pdb_reader *reader)
return 0;
out_unmap:
- munmap(map, st.st_size);
-out_fd:
- close(fd);
+ g_mapped_file_unref(reader->gmf);
return err;
}
void pdb_exit(struct pdb_reader *reader)
{
- munmap(reader->ds.header, reader->file_size);
- close(reader->fd);
+ g_mapped_file_unref(reader->gmf);
pdb_reader_exit(reader);
}
diff --git a/contrib/elf2dmp/pdb.h b/contrib/elf2dmp/pdb.h
index 4351a2dd61..8e395119d1 100644
--- a/contrib/elf2dmp/pdb.h
+++ b/contrib/elf2dmp/pdb.h
@@ -218,7 +218,7 @@ typedef struct pdb_seg {
#define IMAGE_FILE_MACHINE_AMD64 0x8664
struct pdb_reader {
- int fd;
+ GMappedFile *gmf;
size_t file_size;
struct {
PDB_DS_HEADER *header;
--
2.17.2
- [Qemu-devel] [PATCH v2 0/6] contrib/elf2dmp: elf2dmp for Windows hosts, Viktor Prutyanov, 2018/12/19
- [Qemu-devel] [PATCH v2 6/6] configure: enable elf2dmp build for Windows hosts, Viktor Prutyanov, 2018/12/19
- [Qemu-devel] [PATCH v2 4/6] contrib/elf2dmp: fix structures definitions, Viktor Prutyanov, 2018/12/19
- [Qemu-devel] [PATCH v2 2/6] contrib/elf2dmp: use GLib in ELF processing, Viktor Prutyanov, 2018/12/19
- [Qemu-devel] [PATCH v2 3/6] contrib/elf2dmp: use GLib in PDB processing,
Viktor Prutyanov <=
- [Qemu-devel] [PATCH v2 1/6] contrib/elf2dmp: fix elf.h including, Viktor Prutyanov, 2018/12/19
- [Qemu-devel] [PATCH v2 5/6] contrib/elf2dmp: fix printf format, Viktor Prutyanov, 2018/12/19