/*
* Open a directory.
* Params:
* state->ebx - address of user string containing path of directory to open
* state->ecx - length of path
*
* Returns: a file descriptor (>= 0) if successful,
* or an error code (< 0) if unsuccessful
*/
static int Sys_OpenDirectory(struct Interrupt_State *state) {
char *path;
struct File *file;
int rc = 0;
rc = get_path_from_registers(state->ebx, state->ecx, &path);
if(rc != 0) {
return rc;
}
rc = next_descriptor();
if(rc < 0) {
return rc;
}
Enable_Interrupts(); // duped from schulman
rc = Open_Directory(path, &file);
Disable_Interrupts();
Free(path);
if(rc >= 0) {
return add_file_to_descriptor_table(file);
} else {
return rc;
}
}
/*
* Open a directory.
* Params:
* state->ebx - address of user string containing path of directory to open
* state->ecx - length of path
*
* Returns: a file descriptor (>= 0) if successful,
* or an error code (< 0) if unsuccessful
*/
static int Sys_OpenDirectory(struct Interrupt_State *state)
{
char path[VFS_MAX_PATH_LEN] = {'\0' };
struct File **pDir; /* important */
int fd;
int rc;
struct File** fileList = g_currentThread->userContext->fileList;
for(fd = 0; fd < USER_MAX_FILES; fd++){
if(fileList[fd] == NULL){
pDir = &fileList[fd];
break;
}
}
if(fd == USER_MAX_FILES)
{
return -1;
}
Copy_From_User(path, state->ebx, state->ecx);
Enable_Interrupts();
//Print("Sys_OpenDirectory : %s\n", path);
if((rc = Open_Directory(path, pDir)) < 0){ /* important */
fd = rc;
}
//Print("%d, fileList[fd] : %x\n", fd, fileList[fd]);
Disable_Interrupts();
return fd;
//TODO("Open directory system call");
}
int tClean() {
struct VFS_Dir_Entry dirEntry;
int fd, retR, i;
fd = Open_Directory("/d");
for (i = 0;
(retR = Read_Entry(fd, &dirEntry)) == 0 && dirEntry.name[0] == '.';
i++);
if (dirEntry.name[0] != '.') {
return -1; /* not empty */
}
if (i > 2) {
return -1; /* many dotfiles */
}
if (retR != VFS_NO_MORE_DIR_ENTRIES) {
return -1; /* failed out */
}
return 1;
}
int tStatDirectory()
{
int fd, retS, retC;
struct VFS_File_Stat s;
retC = Create_Directory("/d/basic10d");
if (retC < 0)
return -1;
fd = Open_Directory("/d/basic10d");
if (fd < 0)
return -1;
retS = FStat(fd, &s);
Close(fd);
Delete("/d/basic10d");
return ( (retS >= 0) && (s.isDirectory) ) ? 1 : -1;
}
int tStatDirectory() {
int fd, retS, retC;
struct VFS_File_Stat s;
retC = Create_Directory("/d/basic10d");
if (retC < 0) {
Print("couldn't create basic10d: %d %s\n", retC,
Get_Error_String(retC));
return -1;
}
fd = Open_Directory("/d/basic10d");
if (fd < 0) {
Print("couldn't reopen basic10d: %d %s\n", fd, Get_Error_String(fd));
return -1;
}
retS = FStat(fd, &s);
if (Close(fd) < 0) {
Print("failed to close");
return -1;
}
(void)Delete("/d/basic10d", false);
if (retS < 0) {
Print("couldn't fstat opened basic10d: %d %s\n", retS,
Get_Error_String(retS));
}
if (!s.isDirectory) {
Print("fstat didn't think basic10d was a directory\n");
}
return ((retS >= 0) && (s.isDirectory)) ? 1 : -1;
}
int tReadEntry() {
int fd, retR, retC;
struct VFS_Dir_Entry dirEntry;
retC = Create_Directory("/d/basic11d");
if (retC < 0) {
Print("couldn't create basic11d: %d %s\n", retC,
Get_Error_String(retC));
return -1;
}
retC = Create_Directory("/d/basic11d/d1");
if (retC < 0) {
Print("couldn't create basic11d/d1: %d %s\n", retC,
Get_Error_String(retC));
return -1;
}
retC = Create_Directory("/d/basic11d/d2");
if (retC < 0) {
Print("couldn't create basic11d/d2: %d %s\n", retC,
Get_Error_String(retC));
return -1;
}
fd = Open("/d/basic11d/f1", O_CREATE);
if (fd < 0) {
Print("couldn't open basic11d/f1: %d %s\n", fd, Get_Error_String(fd));
return -1;
}
if (Close(fd) < 0) {
Print("failed to close");
return -1;
}
fd = Open_Directory("/d/basic11d");
if (fd < 0) {
Print("couldn't opendir basic11d: %d %s\n", fd, Get_Error_String(fd));
return -1;
}
retR = Read_Entry(fd, &dirEntry);
if ((retR < 0) ||
(strncmp(dirEntry.name, "d1", 2) != 0) ||
(!dirEntry.stats.isDirectory))
return -1;
retR = Read_Entry(fd, &dirEntry);
if ((retR < 0) ||
(strncmp(dirEntry.name, "d2", 2) != 0) ||
(!dirEntry.stats.isDirectory))
return -1;
retR = Read_Entry(fd, &dirEntry);
if ((retR < 0) ||
(strncmp(dirEntry.name, "f1", 2) != 0) ||
(dirEntry.stats.isDirectory))
return -1;
if (Close(fd) < 0) {
Print("failed to close");
return -1;
}
fd = Open_Directory("/d/basic11d");
if (fd < 0)
return -1;
// no retR = Seek(fd, 2);
// no if (retR < 0)
// no return -1;
// no retR = Read_Entry(fd, &dirEntry);
// no if ((retR < 0) ||
// no (strncmp(dirEntry.name, "f1", 2) != 0) ||
// no (dirEntry.stats.isDirectory))
// no return -1;
if (Close(fd) < 0) {
Print("failed to close");
return -1;
}
(void)Delete("/d/basic11d/d1", false);
(void)Delete("/d/basic11d/d2", false);
(void)Delete("/d/basic11d/f1", false);
(void)Delete("/d/basic11d", false);
return 1;
}
int tReadEntry()
{
int fd, retR, retC;
struct VFS_Dir_Entry dirEntry;
retC = Create_Directory("/d/basic11d");
if (retC < 0) {
Print("couldn't create basic11d: %d\n", retC);
return -1;
}
retC = Create_Directory("/d/basic11d/d1");
if (retC < 0) {
Print("couldn't create basic11d/d1: %d\n", retC);
return -1;
}
retC = Create_Directory("/d/basic11d/d2");
if (retC < 0) {
Print("couldn't create basic11d/d2: %d\n", retC);
return -1;
}
fd = Open("/d/basic11d/f1", O_CREATE);
if (fd < 0) {
Print("couldn't create basic11d/f1: %d\n", fd);
return -1;
}
Close(fd);
fd = Open_Directory("/d/basic11d");
if (fd < 0) {
Print("couldn't opendir basic11d: %d\n", fd);
return -1;
}
do {
retR = Read_Entry(fd, &dirEntry);
} while(retR == 0 && dirEntry.name[0] == '.');
if ((retR < 0) ||
(strncmp(dirEntry.name, "d1", 2) != 0) ||
(! dirEntry.stats.isDirectory))
return -1;
retR = Read_Entry(fd, &dirEntry);
if ((retR < 0) ||
(strncmp(dirEntry.name, "d2", 2) != 0) ||
(! dirEntry.stats.isDirectory))
return -1;
retR = Read_Entry(fd, &dirEntry);
if ((retR < 0) ||
(strncmp(dirEntry.name, "f1", 2) != 0) ||
(dirEntry.stats.isDirectory))
return -1;
Close(fd);
fd = Open_Directory("/d/basic11d");
if (fd < 0)
return -1;
retR = Seek(fd, 2);
if (retR < 0)
return -1;
retR = Read_Entry(fd, &dirEntry);
if ((retR < 0) ||
(strncmp(dirEntry.name, "f1", 2) != 0) ||
(dirEntry.stats.isDirectory))
return -1;
Close(fd);
Delete("/d/basic11d/d1");
Delete("/d/basic11d/d2");
Delete("/d/basic11d/f1");
Delete("/d/basic11d");
return 1;
}
int tReadEntry()
{
int fd, retR, retC;
struct VFS_Dir_Entry dirEntry;
retC = Create_Directory("/d/basic11d");
if (retC < 0)
return -1;
retC = Create_Directory("/d/basic11d/d1");
if (retC < 0)
return -1;
retC = Create_Directory("/d/basic11d/d2");
if (retC < 0)
return -1;
fd = Open("/d/basic11d/f1", O_CREATE);
if (fd < 0)
return -1;
Close(fd);
Print("all file/dir created.\n");
fd = Open_Directory("/d/basic11d");
if (fd < 0)
return -1;
retR = Read_Entry(fd, &dirEntry);
Print("read 1 entry.\n");
if ((retR < 0) ||
(strncmp(dirEntry.name, "d1", 2) != 0) ||
(! dirEntry.stats.isDirectory))
return -1;
retR = Read_Entry(fd, &dirEntry);
Print("read 2 entry.\n");
if ((retR < 0) ||
(strncmp(dirEntry.name, "d2", 2) != 0) ||
(! dirEntry.stats.isDirectory))
return -1;
retR = Read_Entry(fd, &dirEntry);
Print("read 3 entry.\n");
if ((retR < 0) ||
(strncmp(dirEntry.name, "f1", 2) != 0) ||
(dirEntry.stats.isDirectory))
return -1;
Close(fd);
fd = Open_Directory("/d/basic11d");
if (fd < 0)
return -1;
Print("opened basic11d.\n");
retR = Seek(fd, 2);
if (retR < 0)
{
Print("failed seek.\n");
return -1;
}
retR = Read_Entry(fd, &dirEntry);
Print("read no2 entry.\n");
if ((retR < 0) ||
(strncmp(dirEntry.name, "f1", 2) != 0) ||
(dirEntry.stats.isDirectory))
return -1;
Close(fd);
Delete("/d/basic11d/d1");
Delete("/d/basic11d/d2");
Delete("/d/basic11d/f1");
Delete("/d/basic11d");
Print("all files deleted.\n");
return 1;
}
