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Support compressing during cpio backup

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This commit is contained in:
LoveSy
2023-12-08 23:30:55 +08:00
committed by topjohnwu
parent d73c2daf6d
commit 8b7fae278b
9 changed files with 145 additions and 11 deletions
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16
native/src/init/getinfo.cpp
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@@ -217,8 +217,24 @@ bool check_two_stage() {
return init.contains("selinux_setup");
}
void unxz_init(const char *init_xz, const char *init) {
LOGD("unxz %s -> %s\n", init_xz, init);
int fd = xopen(init, O_WRONLY | O_CREAT, 0777);
fd_channel ch(fd);
unxz(ch, mmap_data{init_xz});
close(fd);
clone_attr(init_xz, init);
unlink(init_xz);
}
const char *backup_init() {
if (access("/.backup/init.real", F_OK) == 0)
return "/.backup/init.real";
if (access("/.backup/init.real.xz", F_OK) == 0) {
unxz_init("/.backup/init.real.xz", "/.backup/init.real");
return "/.backup/init.real";
}
if (access("/.backup/init.xz", F_OK) == 0)
unxz_init("/.backup/init.xz", "/.backup/init");
return "/.backup/init";
}