mirror of
https://github.com/RGBCube/serenity
synced 2025-07-22 20:37:34 +00:00
LibCore: Use syscall wrappers in MappedFile::map_from_fd_and_close()
This commit is contained in:
parent
58fb3ebf66
commit
a62d16fbe9
1 changed files with 4 additions and 6 deletions
|
@ -7,6 +7,7 @@
|
||||||
#include <AK/ScopeGuard.h>
|
#include <AK/ScopeGuard.h>
|
||||||
#include <AK/String.h>
|
#include <AK/String.h>
|
||||||
#include <LibCore/MappedFile.h>
|
#include <LibCore/MappedFile.h>
|
||||||
|
#include <LibCore/System.h>
|
||||||
#include <errno.h>
|
#include <errno.h>
|
||||||
#include <fcntl.h>
|
#include <fcntl.h>
|
||||||
#include <sys/mman.h>
|
#include <sys/mman.h>
|
||||||
|
@ -26,18 +27,15 @@ ErrorOr<NonnullRefPtr<MappedFile>> MappedFile::map(String const& path)
|
||||||
|
|
||||||
ErrorOr<NonnullRefPtr<MappedFile>> MappedFile::map_from_fd_and_close(int fd, [[maybe_unused]] String const& path)
|
ErrorOr<NonnullRefPtr<MappedFile>> MappedFile::map_from_fd_and_close(int fd, [[maybe_unused]] String const& path)
|
||||||
{
|
{
|
||||||
if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
|
TRY(Core::System::fcntl(fd, F_SETFD, FD_CLOEXEC));
|
||||||
return Error::from_errno(errno);
|
|
||||||
|
|
||||||
ScopeGuard fd_close_guard = [fd] {
|
ScopeGuard fd_close_guard = [fd] {
|
||||||
close(fd);
|
close(fd);
|
||||||
};
|
};
|
||||||
|
|
||||||
struct stat st;
|
auto stat = TRY(Core::System::fstat(fd));
|
||||||
if (fstat(fd, &st) < 0)
|
auto size = stat.st_size;
|
||||||
return Error::from_errno(errno);
|
|
||||||
|
|
||||||
auto size = st.st_size;
|
|
||||||
auto* ptr = mmap(nullptr, size, PROT_READ, MAP_SHARED, fd, 0);
|
auto* ptr = mmap(nullptr, size, PROT_READ, MAP_SHARED, fd, 0);
|
||||||
|
|
||||||
if (ptr == MAP_FAILED)
|
if (ptr == MAP_FAILED)
|
||||||
|
|
Loading…
Add table
Add a link
Reference in a new issue