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#include <ftw.h>
#include <getopt.h>
#include <mcheck.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
int do_depth;
int do_chdir;
int do_phys;
int do_exit;
char *skip_subtree;
char *skip_siblings;
struct option options[] =
{
{ "depth", no_argument, &do_depth, 1 },
{ "chdir", no_argument, &do_chdir, 1 },
{ "phys", no_argument, &do_phys, 1 },
{ "skip-subtree", required_argument, NULL, 't' },
{ "skip-siblings", required_argument, NULL, 's' },
{ "early-exit", no_argument, &do_exit, 1 },
{ NULL, 0, NULL, 0 }
};
const char *flag2name[] =
{
[FTW_F] = "FTW_F",
[FTW_D] = "FTW_D",
[FTW_DNR] = "FTW_DNR",
[FTW_NS] = "FTW_NS",
[FTW_SL] = "FTW_SL",
[FTW_DP] = "FTW_DP",
[FTW_SLN] = "FTW_SLN"
};
static int
cb (const char *name, const struct stat *st, int flag, struct FTW *f)
{
if (do_exit && strcmp (name + f->base, "file@2"))
return FTW_CONTINUE;
printf ("base = \"%.*s\", file = \"%s\", flag = %s",
f->base, name, name + f->base, flag2name[flag]);
if (do_chdir)
{
char *cwd = getcwd (NULL, 0);
printf (", cwd = %s", cwd);
free (cwd);
}
printf (", level = %d\n", f->level);
if (skip_siblings && strcmp (name + f->base, skip_siblings) == 0)
return FTW_SKIP_SIBLINGS;
if (skip_subtree && strcmp (name + f->base, skip_subtree) == 0)
return FTW_SKIP_SUBTREE;
return do_exit ? 26 : FTW_CONTINUE;
}
int
main (int argc, char *argv[])
{
int opt;
int r;
int flag = 0;
mtrace ();
while ((opt = getopt_long_only (argc, argv, "", options, NULL)) != -1)
{
if (opt == 't')
skip_subtree = optarg;
else if (opt == 's')
skip_siblings = optarg;
}
if (do_chdir)
flag |= FTW_CHDIR;
if (do_depth)
flag |= FTW_DEPTH;
if (do_phys)
flag |= FTW_PHYS;
if (skip_subtree || skip_siblings)
{
flag |= FTW_ACTIONRETVAL;
if (do_exit)
{
printf ("--early-exit cannot be used together with --skip-{siblings,subtree}");
exit (1);
}
}
char *cw1 = getcwd (NULL, 0);
r = nftw (optind < argc ? argv[optind] : ".", cb, do_exit ? 1 : 3, flag);
if (r < 0)
perror ("nftw");
char *cw2 = getcwd (NULL, 0);
if (strcmp (cw1, cw2) != 0)
{
printf ("current working directory before and after nftw call differ:\n"
"before: %s\n"
"after: %s\n", cw1, cw2);
exit (1);
}
if (do_exit)
{
puts (r == 26 ? "succeeded" : "failed");
return r == 26 ? 0 : 1;
}
return r;
}
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