83 lines
2.7 KiB
C
83 lines
2.7 KiB
C
/*
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* Copyright (c) 2010, Stefan Lankes, RWTH Aachen University
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <dirent.h>
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/*file descriptor init*/
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#define NR_OPEN 10
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#define FS_INIT { [0 ... NR_OPEN-1] = {NULL, 0, 0} }
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#define TESTSTR "hello in new file '/bin/test.txt'"
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int main(int argc, char** argv)
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{
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int i, testfile;
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char* teststr;
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DIR* testdir;
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dirent_t* testdirent;
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for(i=0; environ[i]; i++)
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printf("environ[%d] = %s\n", i, environ[i]);
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for(i=0; i<argc; i++)
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printf("argv[%d] = %s\n", i, argv[i]);
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teststr = malloc(sizeof(char)*100);
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if (!teststr)
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exit(1);
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testfile = open("/bin/test.txt", O_CREAT | O_EXCL, "wr");
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if (testfile < 1) {
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printf("error: Was not able to open /bin/test.txt\n");
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exit(1);
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}
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write(testfile, TESTSTR, 34);
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lseek(testfile, 0, SEEK_SET);
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read(testfile, teststr, 100);
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close(testfile);
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printf("read from new file: %s\n", teststr);
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if (strcmp(teststr, TESTSTR))
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exit(1);
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testdir = opendir("/bin/");
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if (testdir < 1) {
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printf("error: Was not able to open /bin directory");
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exit(1);
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}
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testdirent = readdir(testdir);
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printf("1. Dirent: %s\n", testdirent->d_name);
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closedir(testdir);
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return errno;
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}
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