86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
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/* Create a very deep "vine" of directories: /dir0/dir1/dir2/...
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and an ordinary file in each of them, until we fill up the
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disk.
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Then delete most of them, for two reasons. First, "tar"
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limits file names to 100 characters (which could be extended
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to 256 without much trouble). Second, a full disk has no room
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for the tar archive. */
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#include <string.h>
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#include <stdio.h>
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#include <syscall.h>
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#include "tests/lib.h"
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#include "tests/main.h"
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void
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test_main (void)
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{
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int i;
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msg ("creating many levels of files and directories...");
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quiet = true;
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CHECK (mkdir ("start"), "mkdir \"start\"");
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CHECK (chdir ("start"), "chdir \"start\"");
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for (i = 0; ; i++)
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{
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char name[3][READDIR_MAX_LEN + 1];
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char file_name[16], dir_name[16];
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char contents[128];
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int fd;
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/* Create file. */
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snprintf (file_name, sizeof file_name, "file%d", i);
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if (!create (file_name, 0))
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break;
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CHECK ((fd = open (file_name)) > 1, "open \"%s\"", file_name);
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snprintf (contents, sizeof contents, "contents %d\n", i);
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if (write (fd, contents, strlen (contents)) != (int) strlen (contents))
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{
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CHECK (remove (file_name), "remove \"%s\"", file_name);
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close (fd);
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break;
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}
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close (fd);
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/* Create directory. */
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snprintf (dir_name, sizeof dir_name, "dir%d", i);
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if (!mkdir (dir_name))
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{
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CHECK (remove (file_name), "remove \"%s\"", file_name);
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break;
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}
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/* Check for file and directory. */
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CHECK ((fd = open (".")) > 1, "open \".\"");
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CHECK (readdir (fd, name[0]), "readdir \".\"");
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CHECK (readdir (fd, name[1]), "readdir \".\"");
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CHECK (!readdir (fd, name[2]), "readdir \".\" (should fail)");
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CHECK ((!strcmp (name[0], dir_name) && !strcmp (name[1], file_name))
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|| (!strcmp (name[1], dir_name) && !strcmp (name[0], file_name)),
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"names should be \"%s\" and \"%s\", "
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"actually \"%s\" and \"%s\"",
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file_name, dir_name, name[0], name[1]);
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close (fd);
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/* Descend into directory. */
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CHECK (chdir (dir_name), "chdir \"%s\"", dir_name);
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}
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CHECK (i > 200, "created files and directories only to level %d", i);
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quiet = false;
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msg ("removing all but top 10 levels of files and directories...");
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quiet = true;
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while (i-- > 10)
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{
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char file_name[16], dir_name[16];
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snprintf (file_name, sizeof file_name, "file%d", i);
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snprintf (dir_name, sizeof dir_name, "dir%d", i);
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CHECK (chdir (".."), "chdir \"..\"");
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CHECK (remove (dir_name), "remove \"%s\"", dir_name);
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CHECK (remove (file_name), "remove \"%s\"", file_name);
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}
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quiet = false;
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}
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