mirror of
https://github.com/rui314/mold.git
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58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
#include "mold.h"
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#include <fcntl.h>
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#include <filesystem>
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#include <windows.h>
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namespace mold {
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template <typename C>
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class MallocOutputFile : public OutputFile<C> {
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public:
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MallocOutputFile(C &ctx, std::string path, i64 filesize, i64 perm)
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: OutputFile<C>(path, filesize, false), perm(perm) {
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this->buf = (u8 *)malloc(filesize);
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if (!this->buf)
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Fatal(ctx) << "malloc failed";
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}
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void close(C &ctx) override {
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Timer t(ctx, "close_file");
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if (this->path == "-") {
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fwrite(this->buf, this->filesize, 1, stdout);
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fclose(stdout);
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return;
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}
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i64 fd = ::open(this->path.c_str(), O_RDWR | O_CREAT, perm);
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if (fd == -1)
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Fatal(ctx) << "cannot open " << this->path << ": " << errno_string();
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FILE *fp = fdopen(fd, "w");
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fwrite(this->buf, this->filesize, 1, fp);
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fclose(fp);
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free(this->buf);
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}
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private:
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i64 perm;
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};
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template <typename C>
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std::unique_ptr<OutputFile<C>>
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OutputFile<C>::open(C &ctx, std::string path, i64 filesize, i64 perm) {
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Timer t(ctx, "open_file");
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if (path.starts_with('/') && !ctx.arg.chroot.empty())
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path = ctx.arg.chroot + "/" + path_clean(path);
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OutputFile<C> *file = new MallocOutputFile<C>(ctx, path, filesize, perm);
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if (ctx.arg.filler != -1)
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memset(file->buf, ctx.arg.filler, filesize);
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return std::unique_ptr<OutputFile<C>>(file);
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}
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} // namespace mold
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