int sys_mkfifo(void * scallStructPtr) {
unsigned int iobuf[1024];
struct mkfifoSyscall s;
ugets(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct mkfifoSyscall), 0, (unsigned int *)&s);
ugets(cProc, (size_t)s.path, 0, 14, 1024, 1, iobuf);
s.res = k_mkfifo(iobuf);
uputs(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct mkfifoSyscall), 0, (unsigned int *)&s);
return 0;
}
int sys_umount(void * scallStructPtr) {
unsigned int mount_point_path[512];
struct umountSyscall s;
ugets(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct umountSyscall), 0, (unsigned int *)&s);
ugets(cProc, (size_t)s.mount_point_path, 0, 14, 512, 1, mount_point_path);
s.res = k_umount((const char *)mount_point_path);
uputs(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct umountSyscall), 0, (unsigned int *)&s);
return 0;
}
int sys_stat(void * scallStructPtr) {
unsigned int fn_buf[1024];
struct stat st;
struct statSyscall s;
ugets(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct statSyscall), 0, (unsigned int *)&s);
ugets(cProc, (size_t)s.filename, 0, 14, 1024, 1, fn_buf);
k_stat(fn_buf, &st);
uputs(cProc, (size_t)s.buf, 0, 14, sizeof(struct stat), 0, (unsigned int *)&st);
uputs(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct statSyscall), 0, (unsigned int *)&s);
return 0;
}
int sys_dup2(void * scallStructPtr) {
int fd;
struct dup2Syscall s;
ugets(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct dup2Syscall), 0, (unsigned int *)&s);
if(!cProc->openFiles[s.oldfd] || s.newfd<0 || s.newfd>MAX_FILES_PER_PROC ) {
s.retval = -1;
goto sys_dup2_out;
}
if(s.oldfd == s.newfd) {
s.retval = s.newfd;
goto sys_dup2_out;
}
if(cProc->openFiles[s.newfd]) {
k_close(cProc->openFiles[s.newfd]);
}
cProc->openFiles[s.oldfd] = cProc->openFiles[s.oldfd];
cProc->openFiles[s.oldfd]->refcnt++;
s.retval = fd;
sys_dup2_out:
uputs(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct dup2Syscall), 0, (unsigned int *)&s);
return 0;
}
int sys_dup(void * scallStructPtr) {
int fd;
struct dupSyscall s;
ugets(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct dupSyscall), 0, (unsigned int *)&s);
if(!cProc->openFiles[s.oldfd]) {
s.retval = -1;
goto sys_dup_out;
}
for (fd = 0; fd < MAX_FILES_PER_PROC; fd++) {
if (!cProc->openFiles[fd]) {
break;
}
}
if (fd != MAX_FILES_PER_PROC) {
cProc->openFiles[fd] = cProc->openFiles[s.oldfd];
cProc->openFiles[fd]->refcnt++;
s.retval = fd;
goto sys_dup_out;
}
s.retval = -1;
sys_dup_out:
uputs(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct dupSyscall), 0, (unsigned int *)&s);
return 0;
}
int sys_read(void * scallStructPtr) {
unsigned int iobuf[1024];
struct readSyscall s;
ugets(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct readSyscall), 0, (unsigned int *)&s);
try_k_read(cProc->openFiles[s.fd], s.buf, s.size, cProc->pid, (size_t)scallStructPtr);
return 0;
}
int sys_pipe(void * scallStructPtr) {
struct pipeSyscall s;
int fd;
char newPath[100];
newPath[0] = 0;
ugets(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct pipeSyscall), 0, (unsigned int *)&s);
k_mkfifo(newPath);
for (fd = 0; fd < MAX_FILES_PER_PROC; fd++) {
if (!cProc->openFiles[fd]) {
break;
}
}
if (fd != MAX_FILES_PER_PROC) {
cProc->openFiles[fd] = k_open(newPath, O_WRONLY);
s.pipefd[1] = fd;
}
for (; fd < MAX_FILES_PER_PROC; fd++) {
if (!cProc->openFiles[fd]) {
break;
}
}
if (fd != MAX_FILES_PER_PROC) {
cProc->openFiles[fd] = k_open(newPath, O_RDONLY);
s.pipefd[0] = fd;
}
uputs(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct pipeSyscall), 0, (unsigned int *)&s);
return 0;
}
int sys_fstat(void * scallStructPtr) {
struct fstatSyscall s;
struct stat st;
ugets(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct fstatSyscall), 0, (unsigned int *)&s);
fs_stat(&(cProc->openFiles[s.fd]->node), &st);
uputs(cProc, (size_t)s.buf, 0, 14, sizeof(struct stat), 0, (unsigned int *)&st);
uputs(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct fstatSyscall), 0, (unsigned int *)&s);
return 0;
}
int sys_mknod(void * scallStructPtr) {
unsigned int iobuf[1024];
struct mknodSyscall s;
char type;
if(s.mode & S_IFCHR) {
type = 'c';
} else if(s.mode & S_IFBLK) {
type = 'b';
}
ugets(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct mknodSyscall), 0, (unsigned int *)&s);
ugets(cProc, (size_t)s.path, 0, 14, 1024, 1, iobuf);
s.res = k_mknod(iobuf,type,s.major,s.minor);
uputs(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct mknodSyscall), 0, (unsigned int *)&s);
return 0;
}
int sys_ioctl(void * scallStructPtr) {
unsigned int fn_buf[1024];
struct stat st;
struct ioctlSyscall s;
int retval;
size_t sz;
ugets(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct ioctlSyscall), 0, (unsigned int *)&s);
ugets(cProc, (size_t)s.p, 0, 14, 1024, 0, fn_buf);
retval = k_ioctl(cProc->openFiles[s.fd], s.req, fn_buf, &sz);
s.retval = retval;
if(sz) {
uputs(cProc, (size_t)s.p, 0, 14, sz, 0, (unsigned int *)&st);
}
uputs(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct ioctlSyscall), 0, (unsigned int *)&s);
return 0;
}
int sys_unlink(void * scallStructPtr) {
unsigned int iobuf[1024];
struct unlinkSyscall s;
struct stat st;
ugets(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct unlinkSyscall), 0, (unsigned int *)&s);
ugets(cProc, (size_t)s.path, 0, 14, 1024, 1, iobuf);
k_stat(iobuf, &st);
if (S_ISDIR(st.st_mode)) {
s.res = -1;
} else {
s.res = k_unlink((const char *)iobuf);
}
uputs(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct unlinkSyscall), 0, (unsigned int *)&s);
return 0;
}
int sys_open(void * scallStructPtr) {
int fd;
unsigned int fn_buf[1024];
struct openSyscall s;
ugets(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct openSyscall), 0, (unsigned int *)&s);
ugets(cProc, (size_t)s.filename, 0, 14, 1024, 1, fn_buf);
for (fd = 0; fd < MAX_FILES_PER_PROC; fd++) {
if (!cProc->openFiles[fd]) {
break;
}
}
if (fd != MAX_FILES_PER_PROC) {
cProc->openFiles[fd] = k_open(fn_buf, s.mode);
s.mode = fd;
} else {
s.mode = -1;
}
uputs(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct openSyscall), 0, (unsigned int *)&s);
return 0;
}
int sys_close(void * scallStructPtr) {
int fd;
struct closeSyscall s;
ugets(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct closeSyscall), 0, (unsigned int *)&s);
if ((s.fd >= 0) && (s.fd < MAX_FILES_PER_PROC)) {
if (cProc->openFiles[s.fd]) {
k_close(cProc->openFiles[s.fd]);
cProc->openFiles[s.fd] = 0;
s.fd = 0;
goto sys_close_out;
}
}
s.fd = -1;
sys_close_out:
uputs(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct closeSyscall), 0, (unsigned int *)&s);
return 0;
}
void filename(char *userspace_upath, char *name)
{
char *buf;
char *ptr;
buf = tmpbuf();
if(ugets(userspace_upath, buf, 512)) {
brelse(buf);
*name = '\0';
return; /* An access violation reading the name */
}
ptr = buf;
while(*ptr)
++ptr;
/* Special case for "...name.../" */
while(*ptr != '/' && ptr-- > buf);
ptr++;
memcpy(name, ptr, FILENAME_LEN);
brelse(buf);
}
inoptr n_open(char *uname, inoptr *parent)
{
inoptr r;
char *tb;
tb = (char*)tmpbuf(); /* temporary memory to hold kernel's copy of the filename */
if (ugets(uname, tb, 512) == -1) {
*parent = NULLINODE;
return NULLINODE;
}
#ifdef DEBUG
kprintf("n_open(\"%s\")\n", tb);
#endif
r = kn_open(tb, parent);
brelse(tb);
return r;
}
int sys_write(void * scallStructPtr) {
struct readSyscall s;
ugets(cProc, (size_t)scallStructPtr, 0, 14, sizeof(struct writeSyscall), 0, (unsigned int *)&s);
try_k_write(cProc->openFiles[s.fd], s.buf, s.size, cProc->pid, (size_t)scallStructPtr);
return 0;
}
