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_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_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_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_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_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;
}
#define FD_ENTRY(_name, _fmt) \
[CR_FD_##_name] = { \
.fmt = _fmt ".img", \
.magic = _name##_MAGIC, \
}
#define FD_ENTRY_F(_name, _fmt, _f) \
[CR_FD_##_name] = { \
.fmt = _fmt ".img", \
.magic = _name##_MAGIC, \
.oflags = _f, \
}
struct cr_fd_desc_tmpl imgset_template[CR_FD_MAX] = {
FD_ENTRY(INVENTORY, "inventory"),
FD_ENTRY(FDINFO, "fdinfo-%d"),
FD_ENTRY(PAGEMAP, "pagemap-%ld"),
FD_ENTRY(SHMEM_PAGEMAP, "pagemap-shmem-%ld"),
FD_ENTRY(REG_FILES, "reg-files"),
FD_ENTRY(EXT_FILES, "ext-files"),
FD_ENTRY(NS_FILES, "ns-files"),
FD_ENTRY(EVENTFD_FILE, "eventfd"),
FD_ENTRY(EVENTPOLL_FILE,"eventpoll"),
FD_ENTRY(EVENTPOLL_TFD, "eventpoll-tfd"),
FD_ENTRY(SIGNALFD, "signalfd"),
FD_ENTRY(INOTIFY_FILE, "inotify"),
FD_ENTRY(INOTIFY_WD, "inotify-wd"),
FD_ENTRY(FANOTIFY_FILE, "fanotify"),
FD_ENTRY(FANOTIFY_MARK, "fanotify-mark"),
FD_ENTRY(CORE, "core-%d"),
* about dumped processes is stored. Each file carries some
* small portion of info about the whole picture, see below
* for more details.
*/
#define FD_ENTRY(_name, _fmt, _show) \
[CR_FD_##_name] = { \
.fmt = _fmt ".img", \
.magic = _name##_MAGIC, \
.show = _show, \
}
static void show_raw_image(int fd, struct cr_options *opt) {};
struct cr_fd_desc_tmpl fdset_template[CR_FD_MAX] = {
FD_ENTRY(INVENTORY, "inventory", show_inventory),
FD_ENTRY(FDINFO, "fdinfo-%d", show_files),
FD_ENTRY(PAGES, "pages-%d", show_pages),
FD_ENTRY(SHMEM_PAGES, "pages-shmem-%ld", show_pages),
FD_ENTRY(REG_FILES, "reg-files", show_reg_files),
FD_ENTRY(EVENTFD, "eventfd", show_eventfds),
FD_ENTRY(EVENTPOLL, "eventpoll", show_eventpoll),
FD_ENTRY(EVENTPOLL_TFD, "eventpoll-tfd", show_eventpoll_tfd),
FD_ENTRY(SIGNALFD, "signalfd", show_signalfd),
FD_ENTRY(INOTIFY, "inotify", show_inotify),
FD_ENTRY(INOTIFY_WD, "inotify-wd", show_inotify_wd),
FD_ENTRY(CORE, "core-%d", show_core),
FD_ENTRY(MM, "mm-%d", show_mm),
FD_ENTRY(VMAS, "vmas-%d", show_vmas),
FD_ENTRY(PIPES, "pipes", show_pipes),
FD_ENTRY(PIPES_DATA, "pipes-data", show_pipes_data),
/*
* The cr fd set is the set of files where the information
* about dumped processes is stored. Each file carries some
* small portion of info about the whole picture, see below
* for more details.
*/
#define FD_ENTRY(_name, _fmt) \
[CR_FD_##_name] = { \
.fmt = _fmt ".img", \
.magic = _name##_MAGIC, \
}
struct cr_fd_desc_tmpl fdset_template[CR_FD_MAX] = {
FD_ENTRY(INVENTORY, "inventory"),
FD_ENTRY(FDINFO, "fdinfo-%d"),
FD_ENTRY(PAGEMAP, "pagemap-%ld"),
FD_ENTRY(SHMEM_PAGEMAP, "pagemap-shmem-%ld"),
FD_ENTRY(REG_FILES, "reg-files"),
FD_ENTRY(EXT_FILES, "ext-files"),
FD_ENTRY(NS_FILES, "ns-files"),
FD_ENTRY(EVENTFD_FILE, "eventfd"),
FD_ENTRY(EVENTPOLL_FILE,"eventpoll"),
FD_ENTRY(EVENTPOLL_TFD, "eventpoll-tfd"),
FD_ENTRY(SIGNALFD, "signalfd"),
FD_ENTRY(INOTIFY_FILE, "inotify"),
FD_ENTRY(INOTIFY_WD, "inotify-wd"),
FD_ENTRY(FANOTIFY_FILE, "fanotify"),
FD_ENTRY(FANOTIFY_MARK, "fanotify-mark"),
FD_ENTRY(CORE, "core-%d"),
