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#include <dirent.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sysexits.h>
static const char *path[1024];
static size_t depth;
static void traverse(int parent, const char *name) {
path[depth++] = name;
int fd = openat(parent, name, O_RDONLY);
if (fd < 0) err(EX_NOINPUT, "%s", name);
DIR *dir = fdopendir(fd);
if (!dir) err(EX_IOERR, "%s", name);
struct dirent *entry;
while (NULL != (entry = readdir(dir))) {
if (entry->d_namlen == 1 && entry->d_name[0] == '.') continue;
if (
entry->d_namlen == 2
&& entry->d_name[0] == '.'
&& entry->d_name[1] == '.'
) continue;
if (entry->d_type == DT_DIR) {
traverse(fd, entry->d_name);
}
for (size_t i = 0; i < depth; ++i) {
printf("%s/", path[i]);
}
printf("%s\n", entry->d_name);
}
// TODO: Check error.
closedir(dir);
depth--;
}
int main(int argc, char *argv[]) {
if (argc < 2) return EX_USAGE;
traverse(AT_FDCWD, argv[1]);
return EX_OK;
}
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