static int fuse_getattr(const char *path, struct stat *stbuf)
{
int res = 0;
int size;
memset(stbuf, 0, sizeof(struct stat));
printf("GEtattr %s\n", path);
if (strcmp(path, "/") == 0) {
stbuf->st_mode = S_IFDIR | 0755;
stbuf->st_nlink = 2;
} else if((size = sfs_getfilesize(path)) != -1) {
stbuf->st_mode = S_IFREG | 0666;
stbuf->st_nlink = 1;
stbuf->st_size = size;
} else
res = -ENOENT;
return res;
}
/* The main testing program
*/
int
main(int argc, char **argv)
{
int i, j, k;
int chunksize;
int readsize;
char *buffer;
char fixedbuf[1024];
int fds[MAX_FD];
char *names[MAX_FD];
int filesize[MAX_FD];
int nopen; /* Number of files simultaneously open */
int ncreate; /* Number of files created in directory */
int error_count = 0;
int tmp;
mksfs(1); /* Initialize the file system. */
/* First we open two files and attempt to write data to them.
*/
{
char fname[MAX_FILE_NAME+10];
int i;
for (i = 0; i < MAX_FILE_NAME+10; i++) {
if (i != 8) {
fname[i] = 'A' + (rand() % 26);
}
else {
fname[i] = '.';
}
}
fname[i] = '\0';
int derp = sfs_fopen(fname);
if (derp >= 0) {
fprintf(stderr, "ERROR: creating file with too long name\n");
error_count++;
}
}
for (i = 0; i < 2; i++) {
names[i] = rand_name();
fds[i] = sfs_fopen(names[i]);
if (fds[i] < 0) {
fprintf(stderr, "ERROR: creating first test file %s\n", names[i]);
error_count++;
}
tmp = sfs_fopen(names[i]);
if (tmp >= 0 && tmp != fds[i]) {
fprintf(stderr, "ERROR: file %s was opened twice\n", names[i]);
error_count++;
}
filesize[i] = (rand() % (MAX_BYTES-MIN_BYTES)) + MIN_BYTES;
}
for (i = 0; i < 2; i++) {
for (j = i + 1; j < 2; j++) {
if (fds[i] == fds[j]) {
fprintf(stderr, "Warning: the file descriptors probably shouldn't be the same?\n");
}
}
}
printf("Two files created with zero length:\n");
for (i = 0; i < 2; i++) {
for (j = 0; j < filesize[i]; j += chunksize) {
if ((filesize[i] - j) < 10) {
chunksize = filesize[i] - j;
}
else {
chunksize = (rand() % (filesize[i] - j)) + 1;
}
if ((buffer = malloc(chunksize)) == NULL) {
fprintf(stderr, "ABORT: Out of memory!\n");
exit(-1);
}
for (k = 0; k < chunksize; k++) {
buffer[k] = (char) (j+k);
}
tmp = sfs_fwrite(fds[i], buffer, chunksize);
if (tmp != chunksize) {
fprintf(stderr, "ERROR: Tried to write %d bytes, but wrote %d\n",
chunksize, tmp);
error_count++;
}
free(buffer);
}
int tmp = sfs_getfilesize(names[i]);
if (filesize[i] != tmp) {
fprintf(stderr, "ERROR: mismatch file size %d, %d\n", filesize[i], tmp);
error_count++;
}
}
if (sfs_fclose(fds[1]) != 0) {
fprintf(stderr, "ERROR: close of handle %d failed\n", fds[1]);
error_count++;
}
/* Sneaky attempt to close already closed file handle. */
if (sfs_fclose(fds[1]) == 0) {
fprintf(stderr, "ERROR: close of stale handle %d succeeded\n", fds[1]);
error_count++;
}
printf("File %s now has length %d and %s now has length %d:\n",
names[0], filesize[0], names[1], filesize[1]);
/* Just to be cruel - attempt to read from a closed file handle.
*/
if (sfs_fread(fds[1], fixedbuf, sizeof(fixedbuf)) > 0) {
fprintf(stderr, "ERROR: read from a closed file handle?\n");
error_count++;
}
fds[1] = sfs_fopen(names[1]);
sfs_fseek(fds[0], 0);
sfs_fseek(fds[1], 0);
for (i = 0; i < 2; i++) {
for (j = 0; j < filesize[i]; j += chunksize) {
if ((filesize[i] - j) < 10) {
chunksize = filesize[i] - j;
}
else {
chunksize = (rand() % (filesize[i] - j)) + 1;
}
if ((buffer = malloc(chunksize)) == NULL) {
fprintf(stderr, "ABORT: Out of memory!\n");
exit(-1);
}
readsize = sfs_fread(fds[i], buffer, chunksize);
if (readsize != chunksize) {
fprintf(stderr, "ERROR: Requested %d bytes, read %d\n", chunksize, readsize);
readsize = chunksize;
}
for (k = 0; k < readsize; k++) {
if (buffer[k] != (char)(j+k)) {
fprintf(stderr, "ERROR: data error at offset %d in file %s (%d,%d)\n",
j+k, names[i], buffer[k], (char)(j+k));
error_count++;
break;
}
}
free(buffer);
}
}
for (i = 0; i < 2; i++) {
if (sfs_fclose(fds[i]) != 0) {
fprintf(stderr, "ERROR: closing file %s\n", names[i]);
error_count++;
}
}
/* Now try to close the files. Don't
* care about the return codes, really, but just want to make sure
* this doesn't cause a problem.
*/
for (i = 0; i < 2; i++) {
if (sfs_fclose(fds[i]) == 0) {
fprintf(stderr, "Warning: closing already closed file %s\n", names[i]);
}
}
sfs_remove(names[0]);
sfs_remove(names[1]);
/* Now just try to open up a bunch of files.
*/
ncreate = 0;
for (i = 0; i < MAX_FD; i++) {
names[i] = rand_name();
fds[i] = sfs_fopen(names[i]);
if (fds[i] < 0) {
break;
}
sfs_fclose(fds[i]);
ncreate++;
}
printf("Created %d files in the root directory\n", ncreate);
nopen = 0;
for (i = 0; i < ncreate; i++) {
fds[i] = sfs_fopen(names[i]);
if (fds[i] < 0) {
break;
}
nopen++;
}
printf("Simultaneously opened %d files\n", nopen);
for (i = 0; i < nopen; i++) {
tmp = sfs_fwrite(fds[i], test_str, strlen(test_str));
if (tmp != strlen(test_str)) {
fprintf(stderr, "ERROR: Tried to write %d, returned %d\n",
(int)strlen(test_str), tmp);
error_count++;
}
if (sfs_fclose(fds[i]) != 0) {
fprintf(stderr, "ERROR: close of handle %d failed\n", fds[i]);
error_count++;
}
}
/* Re-open in reverse order */
for (i = nopen-1; i >= 0; i--) {
fds[i] = sfs_fopen(names[i]);
if (fds[i] < 0) {
fprintf(stderr, "ERROR: can't re-open file %s\n", names[i]);
}
}
/* Now test the file contents.
*/
for (i = 0; i < nopen; i++) {
sfs_fseek(fds[i], 0);
}
for (j = 0; j < strlen(test_str); j++) {
for (i = 0; i < nopen; i++) {
char ch;
if (sfs_fread(fds[i], &ch, 1) != 1) {
fprintf(stderr, "ERROR: Failed to read 1 character\n");
error_count++;
}
if (ch != test_str[j]) {
fprintf(stderr, "ERROR: Read wrong byte from %s at %d (%d,%d)\n",
names[i], j, ch, test_str[j]);
error_count++;
break;
}
}
}
/* Now close all of the open file handles.
*/
for (i = 0; i < nopen; i++) {
if (sfs_fclose(fds[i]) != 0) {
fprintf(stderr, "ERROR: close of handle %d failed\n", fds[i]);
error_count++;
}
}
/* Now we try to re-initialize the system.
*/
mksfs(0);
for (i = 0; i < nopen; i++) {
fds[i] = sfs_fopen(names[i]);
sfs_fseek(fds[i], 0);
if (fds[i] >= 0) {
readsize = sfs_fread(fds[i], fixedbuf, sizeof(fixedbuf));
if (readsize != strlen(test_str)) {
fprintf(stderr, "ERROR: Read wrong number of bytes\n");
error_count++;
}
for (j = 0; j < strlen(test_str); j++) {
if (test_str[j] != fixedbuf[j]) {
fprintf(stderr, "ERROR: Wrong byte in %s at %d (%d,%d)\n",
names[i], j, fixedbuf[j], test_str[j]);
printf("%d\n", fixedbuf[1]);
error_count++;
break;
}
}
if (sfs_fclose(fds[i]) != 0) {
fprintf(stderr, "ERROR: close of handle %d failed\n", fds[i]);
error_count++;
}
}
}
printf("Trying to fill up the disk with repeated writes to %s.\n", names[0]);
printf("(This may take a while).\n");
/* Now try opening the first file, and just write a huge bunch of junk.
* This is just to try to fill up the disk, to see what happens.
*/
fds[0] = sfs_fopen(names[0]);
if (fds[0] >= 0) {
for (i = 0; i < 100000; i++) {
int x;
if ((i % 100) == 0) {
fprintf(stderr, "%d\r", i);
}
memset(fixedbuf, (char)i, sizeof(fixedbuf));
x = sfs_fwrite(fds[0], fixedbuf, sizeof(fixedbuf));
if (x != sizeof(fixedbuf)) {
/* Sooner or later, this write should fail. The only thing is that
* it should fail gracefully, without any catastrophic errors.
*/
printf("Write failed after %d iterations.\n", i);
printf("If the emulated disk contains just over %d bytes, this is OK\n",
(i * (int)sizeof(fixedbuf)));
break;
}
}
sfs_fclose(fds[0]);
}
else {
fprintf(stderr, "ERROR: re-opening file %s\n", names[0]);
}
printf("Directory listing\n");
char *filename = (char *)malloc(MAX_FILE_NAME);
int max = 0;
while (sfs_getnextfilename(filename)) {
if (strcmp(filename, names[max]) != 0) {
printf("ERROR misnamed file %d: %s %s\n", max, filename, names[max]);
error_count++;
}
max++;
}
/* Now, having filled up the disk, try one more time to read the
* contents of the files we created.
*/
for (i = 0; i < nopen; i++) {
fds[i] = sfs_fopen(names[i]);
sfs_fseek(fds[i], 0);
if (fds[i] >= 0) {
readsize = sfs_fread(fds[i], fixedbuf, sizeof(fixedbuf));
if (readsize < strlen(test_str)) {
fprintf(stderr, "ERROR: Read wrong number of bytes\n");
error_count++;
}
for (j = 0; j < strlen(test_str); j++) {
if (test_str[j] != fixedbuf[j]) {
fprintf(stderr, "ERROR: Wrong byte in %s at position %d (%d,%d)\n",
names[i], j, fixedbuf[j], test_str[j]);
error_count++;
break;
}
}
if (sfs_fclose(fds[i]) != 0) {
fprintf(stderr, "ERROR: close of handle %d failed\n", fds[i]);
error_count++;
}
}
}
for (i = 0; i < max; i++) {
sfs_remove(names[i]);
}
if (sfs_getnextfilename(filename)) {
fprintf(stderr, "ERROR: should be empty dir\n");
error_count++;
}
fprintf(stderr, "Test program exiting with %d errors\n", error_count);
return (error_count);
}