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FileFormatCheck: Convert fstream to raw files.

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This commit is contained in:
Ryan Houdek 2023-03-25 06:17:13 -07:00
parent efada6a0ea
commit e232a10442
1 changed files with 12 additions and 33 deletions
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45
Source/Common/FileFormatCheck.cpp
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@ -1,7 +1,9 @@
#include <FEXCore/fextl/string.h>
#include <fstream>
#include <fcntl.h>
#include <stdint.h>
#include <sys/stat.h>
#include <unistd.h>
namespace FEX::FormatCheck {
bool IsSquashFS(fextl::string const &Filename) {
@ -22,36 +24,17 @@ namespace FEX::FormatCheck {
};
SquashFSHeader Header{};
std::fstream File(fextl::string_from_string(Filename), std::ios::in);
if (!File.is_open()) {
int fd = open(Filename.c_str(), O_RDONLY | O_CLOEXEC);
if (fd == -1) {
return false;
}
if (!File.seekg(0, std::fstream::end)) {
if (pread(fd, reinterpret_cast<char*>(&Header), sizeof(SquashFSHeader), 0) != sizeof(SquashFSHeader)) {
close(fd);
return false;
}
auto FileSize = File.tellg();
if (File.fail()) {
return false;
}
if (FileSize <= 0) {
return false;
}
if (!File.seekg(0, std::fstream::beg)) {
return false;
}
if (FileSize < sizeof(SquashFSHeader)) {
return false;
}
if (!File.read(reinterpret_cast<char*>(&Header), sizeof(SquashFSHeader))) {
return false;
}
close(fd);
// Make sure the cookie matches
if (Header.magic == 0x73717368) {
@ -80,17 +63,13 @@ namespace FEX::FormatCheck {
constexpr uint32_t COOKIE_MAGIC_V1 = 0xE0F5E1E2;
EroFSHeader Header{};
std::fstream File(fextl::string_from_string(Filename), std::ios::in);
if (!File.is_open()) {
int fd = open(Filename.c_str(), O_RDONLY | O_CLOEXEC);
if (fd == -1) {
return false;
}
if (!File.seekg(HEADER_OFFSET, std::fstream::beg)) {
return false;
}
if (!File.read(reinterpret_cast<char*>(&Header), sizeof(EroFSHeader))) {
if (pread(fd, reinterpret_cast<char*>(&Header), sizeof(EroFSHeader), HEADER_OFFSET) != sizeof(EroFSHeader)) {
close(fd);
return false;
}