static int sys_ioctl(int fd, int request, void * argp) {
if (FD_CHECK(fd)) {
PTR_VALIDATE(argp);
return ioctl_fs(FD_ENTRY(fd), request, argp);
}
return -1;
}
static int sys_stat(int fd, uintptr_t st) {
PTR_VALIDATE(st);
if (FD_CHECK(fd)) {
return stat_node(FD_ENTRY(fd), st);
}
return -1;
}
static int sys_close(int fd) {
if (FD_CHECK(fd)) {
close_fs(FD_ENTRY(fd));
FD_ENTRY(fd) = NULL;
return 0;
}
return -1;
}
static int sys_write(int fd, char * ptr, int len) {
if (FD_CHECK(fd)) {
PTR_VALIDATE(ptr);
fs_node_t * node = FD_ENTRY(fd);
uint32_t out = write_fs(node, node->offset, len, (uint8_t *)ptr);
node->offset += out;
return out;
}
return -1;
}
static int sys_readdir(int fd, int index, struct dirent * entry) {
if (FD_CHECK(fd)) {
PTR_VALIDATE(entry);
struct dirent * kentry = readdir_fs(FD_ENTRY(fd), (uint32_t)index);
if (kentry) {
memcpy(entry, kentry, sizeof *entry);
free(kentry);
return 0;
} else {
return 1;
}
}
return -1;
}
static int sys_write(int fd, char * ptr, int len) {
if (FD_CHECK(fd)) {
PTR_VALIDATE(ptr);
fs_node_t * node = FD_ENTRY(fd);
if (!has_permission(node, 02)) {
debug_print(WARNING, "access denied (write, fd=%d)", fd);
return -EACCES;
}
uint32_t out = write_fs(node, node->offset, len, (uint8_t *)ptr);
node->offset += out;
return out;
}
return -1;
}
static int sys_write(int fd, char * ptr, int len) {
if (FD_CHECK(fd)) {
PTR_VALIDATE(ptr);
fs_node_t * node = FD_ENTRY(fd);
if (!(FD_MODE(fd) & 02)) {
debug_print(WARNING, "access denied (write, fd=%d)", fd);
return -EACCES;
}
uint32_t out = write_fs(node, FD_OFFSET(fd), len, (uint8_t *)ptr);
FD_OFFSET(fd) += out;
return out;
}
return -EBADF;
}
static int sys_read(int fd, char * ptr, int len) {
if (FD_CHECK(fd)) {
PTR_VALIDATE(ptr);
fs_node_t * node = FD_ENTRY(fd);
if (!(FD_MODE(fd) & 01)) {
debug_print(WARNING, "access denied (read, fd=%d, mode=%d, %s, %s)", fd, FD_MODE(fd), node->name, current_process->name);
return -EACCES;
}
uint32_t out = read_fs(node, FD_OFFSET(fd), len, (uint8_t *)ptr);
FD_OFFSET(fd) += out;
return (int)out;
}
return -EBADF;
}
static int sys_seek(int fd, int offset, int whence) {
if (FD_CHECK(fd)) {
if (fd < 3)
return 0;
switch (whence) {
case 0:
FD_ENTRY(fd)->offset = offset;
break;
case 1:
FD_ENTRY(fd)->offset += offset;
break;
case 2:
FD_ENTRY(fd)->offset = FD_ENTRY(fd)->length + offset;
break;
}
return FD_ENTRY(fd)->offset;
}
return -1;
}
static int sys_seek(int fd, int offset, int whence) {
if (FD_CHECK(fd)) {
if (fd < 3) {
return 0;
}
switch (whence) {
case 0:
FD_OFFSET(fd) = offset;
break;
case 1:
FD_OFFSET(fd) += offset;
break;
case 2:
FD_OFFSET(fd) = FD_ENTRY(fd)->length + offset;
break;
}
return FD_OFFSET(fd);
}
return -EBADF;
}