forked from MarcoBuster/Magisk
e72c6685ed
Most Chinese devices (and supposedly Galaxy S10) running Android Pie is using system-as-root without A/B partition. https://source.android.com/devices/bootloader/system-as-root#about-system-as-root According to the docs above, these devices will have a ramdisk block with size 0 in their boot images. Since magiskinit can run independently on system-as-root devices, we simply just create an empty ramdisk with magiskinit added as init. Huge thanks to @vvb2060 for the heads up and original PR. Close #980, close #1102
78 lines
1.7 KiB
C++
78 lines
1.7 KiB
C++
#pragma once
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#include <stdint.h>
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#include <string>
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#include <memory>
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#include <map>
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#include <string_view>
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#include <OutStream.h>
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struct cpio_newc_header;
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struct cpio_entry_base {
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uint32_t mode = 0;
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uint32_t uid = 0;
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uint32_t gid = 0;
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uint32_t filesize = 0;
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void *data = nullptr;
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cpio_entry_base() : mode(0), uid(0), gid(0), filesize(0) {};
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explicit cpio_entry_base(const cpio_newc_header *h);
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virtual ~cpio_entry_base() = default;
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};
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struct cpio_entry : public cpio_entry_base {
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std::string filename;
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cpio_entry() = default;
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explicit cpio_entry(const char *name, uint32_t mode) : filename(name) {
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this->mode = mode;
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}
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explicit cpio_entry(cpio_newc_header *h) : cpio_entry_base(h) {}
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~cpio_entry() override { free(data); };
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};
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typedef std::map<std::string_view, std::unique_ptr<cpio_entry_base>> entry_map;
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class cpio {
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public:
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void dump(const char *file);
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void rm(const char *name, bool r = false);
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void extract();
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bool extract(const char *name, const char *file);
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bool exists(const char *name);
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protected:
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entry_map entries;
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void rm(entry_map::iterator &it);
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void output(OutStream &out);
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};
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class cpio_rw : public cpio {
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public:
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cpio_rw() = default;
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explicit cpio_rw(const char *file);
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void load_cpio(const char *file);
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void add(mode_t mode, const char *name, const char *file);
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void mkdir(mode_t mode, const char *name);
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void ln(const char *target, const char *name);
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bool mv(const char *from, const char *to);
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protected:
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void insert(cpio_entry *e);
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void mv(entry_map::iterator &it, const char *to);
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void load_cpio(char *buf, size_t sz);
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};
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class cpio_mmap : public cpio {
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public:
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explicit cpio_mmap(const char *file);
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~cpio_mmap();
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private:
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char *buf;
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size_t sz;
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};
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