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284749da8b
2002-01-19 Ulrich Drepper <drepper@redhat.com> * libio/fileops.c (_IO_file_underflow_mmap): Don't define as static. Set offset if read end wasn't the buffer end. (_IO_file_seekoff_mmap): New function. (_IO_file_xsgetn_mmap): New function. (_IO_file_jumps_mmap): Use the two new functions. * libio/wfileops.c (_IO_wfile_underflow_mmap): Handle end read buffer != end buffer. * libio/libioP.h: Declare _IO_file_seekoff_mmap and _IO_file_underflow_mmap. * libio/iofopen.c: Don't position file descriptor at end of file. * libio/tst-widetext.c: Improve error messages. * stdio-common/tst-rndseek.c: Likewise.
144 lines
2.7 KiB
C
144 lines
2.7 KiB
C
#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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static char fname[] = "/tmp/rndseek.XXXXXX";
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static char tempdata[65 * 1024];
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static int do_test (void);
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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static int
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fp_test (const char *name, FILE *fp)
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{
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int result = 0;
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int rounds = 10000;
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do
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{
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int idx = random () % (sizeof (tempdata) - 2);
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char ch1;
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char ch2;
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if (fseek (fp, idx, SEEK_SET) != 0)
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{
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printf ("%s: %d: fseek failed: %m\n", name, rounds);
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result = 1;
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break;
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}
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ch1 = fgetc_unlocked (fp);
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ch2 = tempdata[idx];
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if (ch1 != ch2)
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{
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printf ("%s: %d: character at index %d not what is expected ('%c' vs '%c')\n",
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name, rounds, idx, ch1, ch2);
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result = 1;
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break;
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}
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ch1 = fgetc (fp);
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ch2 = tempdata[idx + 1];
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if (ch1 != ch2)
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{
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printf ("%s: %d: character at index %d not what is expected ('%c' vs '%c')\n",
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name, rounds, idx + 1, ch1, ch2);
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result = 1;
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break;
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}
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}
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while (--rounds > 0);
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fclose (fp);
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return result;
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}
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static int
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do_test (void)
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{
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int fd;
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FILE *fp;
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int i;
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int result;
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fd = mkstemp (fname);
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if (fd == -1)
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{
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printf ("cannot open temporary file: %m\n");
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return 1;
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}
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/* Make sure the file gets removed. */
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add_temp_file (fname);
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/* Repeatability demands this. */
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srandom (42);
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/* First create some temporary data. */
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for (i = 0; i < sizeof (tempdata); ++i)
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tempdata[i] = 'a' + random () % 26;
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/* Write this data to a file. */
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if (TEMP_FAILURE_RETRY (write (fd, tempdata, sizeof (tempdata)))
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!= sizeof (tempdata))
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{
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printf ("cannot wrote data to temporary file: %m\n");
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return 1;
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}
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/* Now try reading the data. */
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fp = fdopen (dup (fd), "r");
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if (fp == NULL)
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{
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printf ("cannot duplicate temporary file descriptor: %m\n");
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return 1;
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}
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rewind (fp);
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for (i = 0; i < sizeof (tempdata); ++i)
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{
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int ch0 = fgetc (fp);
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char ch1 = ch0;
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char ch2 = tempdata[i];
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if (ch0 == EOF)
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{
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puts ("premature end of file while reading data");
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return 1;
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}
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if (ch1 != ch2)
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{
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printf ("%d: '%c' vs '%c'\n", i, ch1, ch2);
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return 1;
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}
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}
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result = fp_test ("fdopen(\"r\")", fp);
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fp = fopen (fname, "r");
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result |= fp_test ("fopen(\"r\")", fp);
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fp = fopen64 (fname, "r");
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result |= fp_test ("fopen64(\"r\")", fp);
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/* The "rw" mode will prevent the mmap-using code from being used. */
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fp = fdopen (fd, "rw");
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result = fp_test ("fdopen(\"rw\")", fp);
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fp = fopen (fname, "rw");
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result |= fp_test ("fopen(\"rw\")", fp);
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fp = fopen64 (fname, "rw");
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result |= fp_test ("fopen64(\"rw\")", fp);
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return result;
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}
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