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Hardlink files recursively

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topjohnwu
2018-02-02 03:22:38 +08:00
parent 28350e3ad9
commit bc2cac90fe
4 changed files with 37 additions and 14 deletions
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27
native/jni/utils/file.c
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@@ -228,6 +228,33 @@ void clone_dir(int src, int dest) {
}
}
void link_dir(int src, int dest) {
struct dirent *entry;
DIR *dir;
int newsrc, newdest;
struct file_attr a;
dir = xfdopendir(src);
while ((entry = xreaddir(dir))) {
if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
continue;
if (is_excl(entry->d_name))
continue;
if (entry->d_type == DT_DIR) {
getattrat(src, entry->d_name, &a);
xmkdirat(dest, entry->d_name, a.st.st_mode & 0777);
setattrat(dest, entry->d_name, &a);
newsrc = xopenat(src, entry->d_name, O_RDONLY | O_CLOEXEC);
newdest = xopenat(dest, entry->d_name, O_RDONLY | O_CLOEXEC);
link_dir(newsrc, newdest);
close(newsrc);
close(newdest);
} else {
linkat(src, entry->d_name, dest, entry->d_name, 0);
}
}
}
int getattr(const char *path, struct file_attr *a) {
if (xlstat(path, &a->st) == -1)
return -1;