nsprpub/pr/tests/append.c

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  15  * The Original Code is the Netscape Portable Runtime (NSPR).
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  37
  38 /*
  39 ** File:        append.c
  40 ** Description: Testing File writes where PR_APPEND was used on open
  41 **
  42 ** append attempts to verify that a file opened with PR_APPEND
  43 ** will always append to the end of file, regardless where the
  44 ** current file pointer is positioned. To do this, PR_Seek() is
  45 ** called before each write with the position set to beginning of
  46 ** file. Subsequent writes should always append.
  47 ** The file is read back, summing the integer data written to the
  48 ** file. If the expected result is equal, the test passes.
  49 **
  50 ** See BugSplat: 4090
  51 */
  52 #include "plgetopt.h"
  53 #include "nspr.h"
  54
  55 #include <stdio.h>
  56 #include <stdlib.h>
  57
  58 PRIntn  debug = 0;
  59 PRIntn  verbose = 0;
  60 PRBool  failedAlready = PR_FALSE;
  61 const PRInt32 addedBytes = 1000;
  62 const PRInt32   buf = 1; /* constant written to fd, addedBytes times */
  63 PRInt32         inBuf;   /* read it back into here */
  64
  65 PRIntn main(PRIntn argc, char *argv[])
  66 {
  67     PRStatus    rc;
  68     PRInt32     rv;
  69     PRFileDesc  *fd;
  70     PRIntn      i;
  71     PRInt32     sum = 0;
  72
  73     {   /* Get command line options */
  74         PLOptStatus os;
  75         PLOptState *opt = PL_CreateOptState(argc, argv, "vd");
  76
  77             while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
  78         {
  79                     if (PL_OPT_BAD == os) continue;
  80             switch (opt->option)
  81             {
  82             case 'd':  /* debug */
  83                 debug = 1;
  84                 break;
  85             case 'v':  /* verbose */
  86                 verbose = 1;
  87                 break;
  88              default:
  89                 break;
  90             }
  91         }
  92             PL_DestroyOptState(opt);
  93     } /* end block "Get command line options" */
  94 /* ---------------------------------------------------------------------- */
  95     fd = PR_Open( "/tmp/nsprAppend", (PR_APPEND | PR_CREATE_FILE | PR_TRUNCATE | PR_WRONLY), 0666 );
  96     if ( NULL == fd )  {
  97         if (debug) printf("PR_Open() failed for writing: %d\n", PR_GetError());
  98         failedAlready = PR_TRUE;
  99         goto Finished;
 100     }
 101
 102     for ( i = 0; i < addedBytes ; i++ ) {
 103         rv = PR_Write( fd, &buf, sizeof(buf));
 104         if ( sizeof(buf) != rv )  {
 105             if (debug) printf("PR_Write() failed: %d\n", PR_GetError());
 106             failedAlready = PR_TRUE;
 107             goto Finished;
 108         }
 109         rv = PR_Seek( fd, 0 , PR_SEEK_SET );
 110         if ( -1 == rv )  {
 111             if (debug) printf("PR_Seek() failed: %d\n", PR_GetError());
 112             failedAlready = PR_TRUE;
 113             goto Finished;
 114         }
 115     }
 116     rc = PR_Close( fd );
 117     if ( PR_FAILURE == rc ) {
 118         if (debug) printf("PR_Close() failed after writing: %d\n", PR_GetError());
 119         failedAlready = PR_TRUE;
 120         goto Finished;
 121     }
 122 /* ---------------------------------------------------------------------- */
 123     fd = PR_Open( "/tmp/nsprAppend", PR_RDONLY, 0 );
 124     if ( NULL == fd )  {
 125         if (debug) printf("PR_Open() failed for reading: %d\n", PR_GetError());
 126         failedAlready = PR_TRUE;
 127         goto Finished;
 128     }
 129
 130     for ( i = 0; i < addedBytes ; i++ ) {
 131         rv = PR_Read( fd, &inBuf, sizeof(inBuf));
 132         if ( sizeof(inBuf) != rv)  {
 133             if (debug) printf("PR_Write() failed: %d\n", PR_GetError());
 134             failedAlready = PR_TRUE;
 135             goto Finished;
 136         }
 137         sum += inBuf;
 138     }
 139
 140     rc = PR_Close( fd );
 141     if ( PR_FAILURE == rc ) {
 142         if (debug) printf("PR_Close() failed after reading: %d\n", PR_GetError());
 143         failedAlready = PR_TRUE;
 144         goto Finished;
 145     }
 146     if ( sum != addedBytes )  {
 147         if (debug) printf("Uh Oh! addedBytes: %d. Sum: %d\n", addedBytes, sum);
 148         failedAlready = PR_TRUE;
 149         goto Finished;
 150     }
 151
 152 /* ---------------------------------------------------------------------- */
 153 Finished:
 154     if (debug || verbose) printf("%s\n", (failedAlready)? "FAILED" : "PASSED" );
 155     return( (failedAlready)? 1 : 0 );
 156 }  /* main() */
 157
 158 /* append.c */