lib/replace/test/os2_delete.c

   1 /*
   2   test readdir/unlink pattern that OS/2 uses
   3   tridge@samba.org July 2005
   4 */
   5
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <sys/stat.h>
   9 #include <unistd.h>
  10 #include <sys/types.h>
  11 #include <dirent.h>
  12 #include <errno.h>
  13 #include <string.h>
  14 #include <fcntl.h>
  15 #include "replace-test.h"
  16
  17 #define NUM_FILES 700
  18 #define READDIR_SIZE 100
  19 #define DELETE_SIZE 4
  20
  21 #define TESTDIR "test.dir"
  22
  23 static int test_readdir_os2_delete_ret;
  24
  25 #define FAILED(d) (printf("failure: readdir [\nFailed for %s - %d = %s\n]\n", d, errno, strerror(errno)), test_readdir_os2_delete_ret = 1)
  26
  27 #ifndef MIN
  28 #define MIN(a,b) ((a)<(b)?(a):(b))
  29 #endif
  30
  31 #ifdef _WIN32
  32 #define mkdir(d,m) _mkdir(d)
  33 #endif
  34
  35 static void cleanup(void)
  36 {
  37         /* I'm a lazy bastard */
  38         if (system("rm -rf " TESTDIR)) {
  39                 FAILED("system");
  40         }
  41         mkdir(TESTDIR, 0700) == 0 || FAILED("mkdir");
  42 }
  43
  44 static void create_files(void)
  45 {
  46         int i;
  47         for (i=0;i<NUM_FILES;i++) {
  48                 char fname[40];
  49                 int fd;
  50                 snprintf(fname, sizeof(fname), TESTDIR "/test%u.txt", i);
  51                 fd = open(fname, O_CREAT|O_RDWR, 0600);
  52                 if (fd < 0) {
  53                         FAILED("open");
  54                 }
  55                 if (close(fd) != 0) {
  56                         FAILED("close");
  57                 }
  58         }
  59 }
  60
  61 static int os2_delete(DIR *d)
  62 {
  63         off_t offsets[READDIR_SIZE];
  64         int i, j;
  65         struct dirent *de;
  66         char names[READDIR_SIZE][30];
  67
  68         /* scan, remembering offsets */
  69         for (i=0, de=readdir(d);
  70              de && i < READDIR_SIZE;
  71              de=readdir(d), i++) {
  72                 offsets[i] = telldir(d);
  73                 /* strlcpy not available here */
  74                 snprintf(names[i], sizeof(names[i]), "%s", de->d_name);
  75         }
  76
  77         if (i == 0) {
  78                 return 0;
  79         }
  80
  81         /* delete the first few */
  82         for (j=0; j<MIN(i, DELETE_SIZE); j++) {
  83                 char fname[40];
  84                 snprintf(fname, sizeof(fname), TESTDIR "/%s", names[j]);
  85                 unlink(fname) == 0 || FAILED("unlink");
  86         }
  87
  88         /* seek to just after the deletion */
  89         seekdir(d, offsets[j-1]);
  90
  91         /* return number deleted */
  92         return j;
  93 }
  94
  95 int test_readdir_os2_delete(void)
  96 {
  97         int total_deleted = 0;
  98         DIR *d;
  99         struct dirent *de;
 100
 101         test_readdir_os2_delete_ret = 0;
 102
 103         cleanup();
 104         create_files();
 105
 106         d = opendir(TESTDIR "/test0.txt");
 107         if (d != NULL) FAILED("opendir() on file succeed");
 108         if (errno != ENOTDIR) FAILED("opendir() on file didn't give ENOTDIR");
 109
 110         d = opendir(TESTDIR);
 111
 112         /* skip past . and .. */
 113         de = readdir(d);
 114         strcmp(de->d_name, ".") == 0 || FAILED("match .");
 115         de = readdir(d);
 116         strcmp(de->d_name, "..") == 0 || FAILED("match ..");
 117
 118         while (1) {
 119                 int n = os2_delete(d);
 120                 if (n == 0) break;
 121                 total_deleted += n;
 122         }
 123         closedir(d);
 124
 125         fprintf(stderr, "Deleted %d files of %d\n", total_deleted, NUM_FILES);
 126
 127         rmdir(TESTDIR) == 0 || FAILED("rmdir");
 128
 129         if (system("rm -rf " TESTDIR) == -1) {
 130                 FAILED("system");
 131         }
 132
 133         return test_readdir_os2_delete_ret;
 134 }