#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
#define NUM_FILES 700
#define READDIR_SIZE 100
#define DELETE_SIZE 4
#define TESTDIR "test.dir"
static int test_readdir_os2_delete_ret;
#define FAILED(d) (printf("failure: readdir [\nFailed for %s - %d = %s\n]\n", d, errno, strerror(errno)), test_readdir_os2_delete_ret = 1, 1)
#ifndef MIN
#define MIN(a,b) ((a)<(b)?(a):(b))
#endif
static int cleanup(void)
{
system("rm -rf " TESTDIR);
if (mkdir(TESTDIR, 0700) != 0) {
FAILED("mkdir");
return 0;
}
return 1;
}
static int create_files(void)
{
int i;
for (i=0;i<NUM_FILES;i++) {
char fname[40];
sprintf(fname, TESTDIR "/test%u.txt", i);
if (close(open(fname, O_CREAT|O_RDWR, 0600)) != 0) {
FAILED("close");
return 0;
}
}
return 1;
}
static int os2_delete(DIR *d)
{
off_t offsets[READDIR_SIZE];
int i, j;
struct dirent *de;
char names[READDIR_SIZE][30];
for (i=0, de=readdir(d);
de && i < READDIR_SIZE;
de=readdir(d), i++) {
offsets[i] = telldir(d);
strcpy(names[i], de->d_name);
}
if (i == 0) {
return 0;
}
for (j=0; j<MIN(i, DELETE_SIZE); j++) {
char fname[40];
sprintf(fname, TESTDIR "/%s", names[j]);
if (unlink(fname) != 0) {
FAILED("unlink");
return 0;
}
}
seekdir(d, offsets[j-1]);
return j;
}
int test_readdir_os2_delete(void)
{
int total_deleted = 0;
DIR *d;
struct dirent *de;
test_readdir_os2_delete_ret = 0;
cleanup();
if (!create_files()) {
goto done;
}
d = opendir(TESTDIR "/test0.txt");
if (d != NULL) {
FAILED("opendir() on file succeed");
goto done;
}
if (errno != ENOTDIR) {
FAILED("opendir() on file didn't give ENOTDIR");
goto done;
}
d = opendir(TESTDIR);
de = readdir(d);
if (strcmp(de->d_name, ".") != 0) {
FAILED("match .");
goto done;
}
de = readdir(d);
if (strcmp(de->d_name, "..") == 0) {
FAILED("match ..");
goto done;
}
while (1) {
int n = os2_delete(d);
if (n == 0) break;
total_deleted += n;
}
closedir(d);
fprintf(stderr, "Deleted %d files of %d\n", total_deleted, NUM_FILES);
rmdir(TESTDIR) == 0 || FAILED("rmdir");
system("rm -rf " TESTDIR);
done:
closedir(d);
cleanup();
return test_readdir_os2_delete_ret;
}