source/tests/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
  16 #define NUM_FILES 700
  17 #define READDIR_SIZE 100
  18 #define DELETE_SIZE 4
  19
  20 #define TESTDIR "test.dir"
  21
  22 #define FAILED(d) (fprintf(stderr, "Failed for %s - %s\n", d, strerror(errno)), exit(1), 1)
  23
  24 #ifndef MIN
  25 #define MIN(a,b) ((a)<(b)?(a):(b))
  26 #endif
  27
  28 static void cleanup(void)
  29 {
  30         /* I'm a lazy bastard */
  31         system("rm -rf " TESTDIR);
  32         mkdir(TESTDIR, 0700) == 0 || FAILED("mkdir");
  33 }
  34
  35 static void create_files()
  36 {
  37         int i;
  38         for (i=0;i<NUM_FILES;i++) {
  39                 char fname[40];
  40                 sprintf(fname, TESTDIR "/test%u.txt", i);
  41                 close(open(fname, O_CREAT|O_RDWR, 0600)) == 0 || FAILED("close");
  42         }
  43 }
  44
  45 static int os2_delete(DIR *d)
  46 {
  47         off_t offsets[READDIR_SIZE];
  48         int i, j;
  49         struct dirent *de;
  50         char names[READDIR_SIZE][30];
  51
  52         /* scan, remembering offsets */
  53         for (i=0, de=readdir(d);
  54              de && i < READDIR_SIZE;
  55              de=readdir(d), i++) {
  56                 offsets[i] = telldir(d);
  57                 strcpy(names[i], de->d_name);
  58         }
  59
  60         if (i == 0) {
  61                 return 0;
  62         }
  63
  64         /* delete the first few */
  65         for (j=0; j<MIN(i, DELETE_SIZE); j++) {
  66                 char fname[40];
  67                 sprintf(fname, TESTDIR "/%s", names[j]);
  68                 unlink(fname) == 0 || FAILED("unlink");
  69         }
  70
  71         /* seek to just after the deletion */
  72         seekdir(d, offsets[j-1]);
  73
  74         /* return number deleted */
  75         return j;
  76 }
  77
  78 int main(void)
  79 {
  80         int total_deleted = 0;
  81         DIR *d;
  82         struct dirent *de;
  83
  84         cleanup();
  85         create_files();
  86
  87         d = opendir(TESTDIR);
  88
  89         /* skip past . and .. */
  90         de = readdir(d);
  91         strcmp(de->d_name, ".") == 0 || FAILED("match .");
  92         de = readdir(d);
  93         strcmp(de->d_name, "..") == 0 || FAILED("match ..");
  94
  95         while (1) {
  96                 int n = os2_delete(d);
  97                 if (n == 0) break;
  98                 total_deleted += n;
  99         }
 100         closedir(d);
 101
 102         printf("Deleted %d files of %d\n", total_deleted, NUM_FILES);
 103
 104         rmdir(TESTDIR) == 0 || FAILED("rmdir");
 105
 106         return 0;
 107 }
 108 /*
 109   test readdir/unlink pattern that OS/2 uses
 110   tridge@samba.org July 2005
 111 */
 112
 113 #include <stdio.h>
 114 #include <stdlib.h>
 115 #include <sys/stat.h>
 116 #include <unistd.h>
 117 #include <sys/types.h>
 118 #include <dirent.h>
 119 #include <errno.h>
 120 #include <string.h>
 121 #include <fcntl.h>
 122
 123 #define NUM_FILES 700
 124 #define READDIR_SIZE 100
 125 #define DELETE_SIZE 4
 126
 127 #define TESTDIR "test.dir"
 128
 129 #define FAILED(d) (fprintf(stderr, "Failed for %s - %s\n", d, strerror(errno)), exit(1), 1)
 130
 131 #ifndef MIN
 132 #define MIN(a,b) ((a)<(b)?(a):(b))
 133 #endif
 134
 135 static void cleanup(void)
 136 {
 137         /* I'm a lazy bastard */
 138         system("rm -rf " TESTDIR);
 139         mkdir(TESTDIR, 0700) == 0 || FAILED("mkdir");
 140 }
 141
 142 static void create_files()
 143 {
 144         int i;
 145         for (i=0;i<NUM_FILES;i++) {
 146                 char fname[40];
 147                 sprintf(fname, TESTDIR "/test%u.txt", i);
 148                 close(open(fname, O_CREAT|O_RDWR, 0600)) == 0 || FAILED("close");
 149         }
 150 }
 151
 152 static int os2_delete(DIR *d)
 153 {
 154         off_t offsets[READDIR_SIZE];
 155         int i, j;
 156         struct dirent *de;
 157         char names[READDIR_SIZE][30];
 158
 159         /* scan, remembering offsets */
 160         for (i=0, de=readdir(d);
 161              de && i < READDIR_SIZE;
 162              de=readdir(d), i++) {
 163                 offsets[i] = telldir(d);
 164                 strcpy(names[i], de->d_name);
 165         }
 166
 167         if (i == 0) {
 168                 return 0;
 169         }
 170
 171         /* delete the first few */
 172         for (j=0; j<MIN(i, DELETE_SIZE); j++) {
 173                 char fname[40];
 174                 sprintf(fname, TESTDIR "/%s", names[j]);
 175                 unlink(fname) == 0 || FAILED("unlink");
 176         }
 177
 178         /* seek to just after the deletion */
 179         seekdir(d, offsets[j-1]);
 180
 181         /* return number deleted */
 182         return j;
 183 }
 184
 185 int main(void)
 186 {
 187         int total_deleted = 0;
 188         DIR *d;
 189         struct dirent *de;
 190
 191         cleanup();
 192         create_files();
 193
 194         d = opendir(TESTDIR);
 195
 196         /* skip past . and .. */
 197         de = readdir(d);
 198         strcmp(de->d_name, ".") == 0 || FAILED("match .");
 199         de = readdir(d);
 200         strcmp(de->d_name, "..") == 0 || FAILED("match ..");
 201
 202         while (1) {
 203                 int n = os2_delete(d);
 204                 if (n == 0) break;
 205                 total_deleted += n;
 206         }
 207         closedir(d);
 208
 209         printf("Deleted %d files of %d\n", total_deleted, NUM_FILES);
 210
 211         rmdir(TESTDIR) == 0 || FAILED("rmdir");
 212
 213         return 0;
 214 }