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ptp-gadget.c
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/*
* Copyright (C) 2009
* Guennadi Liakhovetski, DENX Software Engineering, <[email protected]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*/
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <memory.h>
#include <pthread.h>
#include <signal.h>
#include <stdlib.h>
#include <time.h>
#include <semaphore.h>
#include <iconv.h>
#include <dirent.h>
#include <stdint.h>
#include <glib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
#include <sys/mman.h>
#include <sys/vfs.h>
#include <sys/wait.h>
#include <sys/utsname.h>
#include <sys/inotify.h>
#include <asm/byteorder.h>
#include <linux/types.h>
#include <linux/usb/functionfs.h>
#include <linux/usb/ch9.h>
#define cpu_to_le16(x) htole16(x)
#define cpu_to_le32(x) htole32(x)
#define le32_to_cpu(x) le32toh(x)
#define le16_to_cpu(x) le16toh(x)
#define min(a,b) ({ typeof(a) __a = (a); typeof(b) __b = (b); __a < __b ? __a : __b; })
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
static int verbose;
/* Still Image class-specific requests: */
#define USB_REQ_PTP_CANCEL_REQUEST 0x64
#define USB_REQ_PTP_GET_EXTENDED_EVENT_DATA 0x65
#define USB_REQ_PTP_DEVICE_RESET_REQUEST 0x66
#define USB_REQ_PTP_GET_DEVICE_STATUS_REQUEST 0x67
#define DRIVER_VENDOR_NUM 0x1d6b
#define DRIVER_PRODUCT_NUM 0x0100
#define DRIVER_INTERFACE "PTP Interface"
/* Will be used for bcdDevice: remember to update on major changes */
#define MAJOR 1
#define MINOR 1
#define DRIVER_VERSION ((MAJOR << 8) | MINOR)
#define VERSION_STRING __stringify(MAJOR) "." __stringify(MINOR)
#define PTP_MANUFACTURER "Linux Foundation"
#define PTP_MODEL "PTP Gadget"
#define PTP_STORAGE_DESC "SD/MMC"
#define PTP_MODEL_DIR "100LINUX"
#define THUMB_SUPPORT
#undef THUMB_SUPPORT
#define FORMAT_SUPPORT
#undef FORMAT_SUPPORT
/*-------------------------------------------------------------------------*/
/* USB subclass value = the protocol encapsulation */
#define USB_SC_IMAGE_CAPTURE 0x01 /* Still Image Capture Subclass */
#define USB_PR_CB 0x01 /* Control/Bulk w/o interrupt */
#define MAX_PACKET_SIZE_HS 512
/* some devices can handle other status packet sizes */
/* ATTENTION: somehow automatic ZLP generation is not working.
* make sure that event length, which is 24, is not a multiple of STATUS_MAXPACKET
*/
#define STATUS_MAXPACKET 28
static const struct
{
struct usb_functionfs_descs_head header;
struct {
struct usb_interface_descriptor intf;
struct usb_endpoint_descriptor_no_audio source;
struct usb_endpoint_descriptor_no_audio sink;
struct usb_endpoint_descriptor_no_audio status;
} __attribute__((packed)) fs_descs, hs_descs;
} __attribute__((packed)) descriptors = {
.header = {
.magic = cpu_to_le32(FUNCTIONFS_DESCRIPTORS_MAGIC),
.length = cpu_to_le32(sizeof(descriptors)),
.fs_count = 4,
.hs_count = 4,
}, .fs_descs = {
.intf = {
.bLength = sizeof(descriptors.fs_descs.intf),
.bDescriptorType = USB_DT_INTERFACE,
.bNumEndpoints = 3,
.bInterfaceClass = USB_CLASS_STILL_IMAGE,
.bInterfaceSubClass = USB_SC_IMAGE_CAPTURE,
.bInterfaceProtocol = USB_PR_CB,
.iInterface = 1,
}, .source = {
.bLength = sizeof(descriptors.fs_descs.source),
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = 1 | USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
}, .sink = {
.bLength = sizeof(descriptors.fs_descs.sink),
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = 2 | USB_DIR_OUT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
}, .status = {
.bLength = sizeof(descriptors.fs_descs.status),
.bDescriptorType = USB_DT_ENDPOINT,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.bEndpointAddress = 3 | USB_DIR_IN,
.wMaxPacketSize = __constant_cpu_to_le16(STATUS_MAXPACKET),
.bInterval = 10,
},
}, .hs_descs = {
.intf = {
.bLength = sizeof(descriptors.hs_descs.intf),
.bDescriptorType = USB_DT_INTERFACE,
.bNumEndpoints = 3,
.bInterfaceClass = USB_CLASS_STILL_IMAGE,
.bInterfaceSubClass = USB_SC_IMAGE_CAPTURE,
.bInterfaceProtocol = USB_PR_CB,
.iInterface = 1,
}, .source = {
.bLength = sizeof(descriptors.hs_descs.source),
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = 1 | USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = __constant_cpu_to_le16(MAX_PACKET_SIZE_HS),
}, .sink = {
.bLength = sizeof(descriptors.hs_descs.sink),
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = 2 | USB_DIR_OUT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = __constant_cpu_to_le16(MAX_PACKET_SIZE_HS),
}, .status = {
.bLength = sizeof(descriptors.hs_descs.status),
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = 3 | USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = __constant_cpu_to_le16(STATUS_MAXPACKET),
.bInterval = 10,
},
},
};
/*-------------------------------------------------------------------------*/
static const struct
{
struct usb_functionfs_strings_head header;
struct {
__le16 code;
const char str1[sizeof(DRIVER_INTERFACE)];
} __attribute__((packed)) lang0;
} __attribute__((packed)) strings = {
.header = {
.magic = cpu_to_le32(FUNCTIONFS_STRINGS_MAGIC),
.length = cpu_to_le32(sizeof(strings)),
.str_count = cpu_to_le32(1),
.lang_count = cpu_to_le32(1),
}, .lang0 = {
cpu_to_le16(0x0409), /* en-us */
DRIVER_INTERFACE,
},
};
/*-------------------------------------------------------------------------*/
/* kernel drivers could autoconfigure like this too ... if
* they were willing to waste the relevant code/data space.
*/
#define FFS_PREFIX "/dev/ptp/"
#define FFS_PTP_EP0 FFS_PREFIX"ep0"
#define FFS_PTP_IN FFS_PREFIX"ep1"
#define FFS_PTP_OUT FFS_PREFIX"ep2"
#define FFS_PTP_INT FFS_PREFIX"ep3"
/* gadgetfs currently has no chunking (or O_DIRECT/zerocopy) support
* to turn big requests into lots of smaller ones; so this is "small".
*/
#define USB_BUFSIZE (7 * 1024)
#define CHECK_COUNT(cnt, min, max, op) do { \
if (cnt & 3 || cnt < min || cnt > max) { \
fprintf(stderr, "Wrong " op " size: %u\n", \
(unsigned int)cnt); \
errno = EPIPE; \
return -1; \
} \
} while (0)
#define CHECK_SESSION(s_container, r_container, cnt, ret) do { \
if (session <= 0) { \
make_response(s_container, r_container, \
PIMA15740_RESP_SESSION_NOT_OPEN, \
sizeof(*s_container)); \
*cnt = 0; \
*ret = 0; \
break; \
} \
} while (0)
#define STORE_ID 0x00010001
#define PTP_PARAM_UNUSED 0
#define PTP_PARAM_ANY 0xffffffff
/* All little endian */
struct ptp_container {
uint32_t length;
uint16_t type;
uint16_t code;
uint32_t id;
uint8_t payload[];
} __attribute__ ((packed));
enum ptp_container_type {
PTP_CONTAINER_TYPE_UNDEFINED = 0,
PTP_CONTAINER_TYPE_COMMAND_BLOCK = 1,
PTP_CONTAINER_TYPE_DATA_BLOCK = 2,
PTP_CONTAINER_TYPE_RESPONSE_BLOCK = 3,
PTP_CONTAINER_TYPE_EVENT_BLOCK = 4,
};
enum pima15740_operation_code {
PIMA15740_OP_UNDEFINED = 0x1000,
PIMA15740_OP_GET_DEVICE_INFO = 0x1001,
PIMA15740_OP_OPEN_SESSION = 0x1002,
PIMA15740_OP_CLOSE_SESSION = 0x1003,
PIMA15740_OP_GET_STORAGE_IDS = 0x1004,
PIMA15740_OP_GET_STORAGE_INFO = 0x1005,
PIMA15740_OP_GET_NUM_OBJECTS = 0x1006,
PIMA15740_OP_GET_OBJECT_HANDLES = 0x1007,
PIMA15740_OP_GET_OBJECT_INFO = 0x1008,
PIMA15740_OP_GET_OBJECT = 0x1009,
PIMA15740_OP_GET_THUMB = 0x100a,
PIMA15740_OP_DELETE_OBJECT = 0x100b,
PIMA15740_OP_SEND_OBJECT_INFO = 0x100c,
PIMA15740_OP_SEND_OBJECT = 0x100d,
PIMA15740_OP_INITIATE_CAPTURE = 0x100e,
PIMA15740_OP_FORMAT_STORE = 0x100f,
PIMA15740_OP_RESET_DEVICE = 0x1010,
PIMA15740_OP_SELF_TEST = 0x1011,
PIMA15740_OP_SET_OBJECT_PROTECTION = 0x1012,
PIMA15740_OP_POWER_DOWN = 0x1013,
PIMA15740_OP_GET_DEVICE_PROP_DESC = 0x1014,
PIMA15740_OP_GET_DEVICE_PROP_VALUE = 0x1015,
PIMA15740_OP_SET_DEVICE_PROP_VALUE = 0x1016,
PIMA15740_OP_RESET_DEVICE_PROP_VALUE = 0x1017,
PIMA15740_OP_TERMINATE_OPEN_CAPTURE = 0x1018,
PIMA15740_OP_MOVE_OBJECT = 0x1009,
PIMA15740_OP_COPY_OBJECT = 0x100a,
PIMA15740_OP_GET_PARTIAL_OBJECT = 0x100b,
PIMA15740_OP_INITIATE_OPEN_CAPTURE = 0x100c,
};
enum pima15740_response_code {
PIMA15740_RESP_UNDEFINED = 0x2000,
PIMA15740_RESP_OK = 0x2001,
PIMA15740_RESP_GENERAL_ERROR = 0x2002,
PIMA15740_RESP_SESSION_NOT_OPEN = 0x2003,
PIMA15740_RESP_INVALID_TRANSACTION_ID = 0x2004,
PIMA15740_RESP_OPERATION_NOT_SUPPORTED = 0x2005,
PIMA15740_RESP_PARAMETER_NOT_SUPPORTED = 0x2006,
PIMA15740_RESP_INCOMPLETE_TRANSFER = 0x2007,
PIMA15740_RESP_INVALID_STORAGE_ID = 0x2008,
PIMA15740_RESP_INVALID_OBJECT_HANDLE = 0x2009,
PIMA15740_RESP_DEVICE_PROP_NOT_SUPPORTED = 0x200a,
PIMA15740_RESP_INVALID_OBJECT_FORMAT_CODE = 0x200b,
PIMA15740_RESP_STORE_FULL = 0x200c,
PIMA15740_RESP_OBJECT_WRITE_PROTECTED = 0x200d,
PIMA15740_RESP_STORE_READ_ONLY = 0x200e,
PIMA15740_RESP_ACCESS_DENIED = 0x200f,
PIMA15740_RESP_NO_THUMBNAIL_PRESENT = 0x2010,
PIMA15740_RESP_SELFTEST_FAILED = 0x2011,
PIMA15740_RESP_PARTIAL_DELETION = 0x2012,
PIMA15740_RESP_STORE_NOT_AVAILABLE = 0x2013,
PIMA15740_RESP_SPECIFICATION_BY_FORMAT_NOT_SUPPORTED = 0x2014,
PIMA15740_RESP_NO_VALID_OBJECT_INFO = 0x2015,
PIMA15740_RESP_INVALID_CODE_FORMAT = 0x2016,
PIMA15740_RESP_UNKNOWN_VENDOR_CODE = 0x2017,
PIMA15740_RESP_CAPTURE_ALREADY_TERMINATED = 0x2018,
PIMA15740_RESP_DEVICE_BUSY = 0x2019,
PIMA15740_RESP_INVALID_PARENT_OBJECT = 0x201a,
PIMA15740_RESP_INVALID_DEVICE_PROP_FORMAT = 0x201b,
PIMA15740_RESP_INVALID_DEVICE_PROP_VALUE = 0x201c,
PIMA15740_RESP_INVALID_PARAMETER = 0x201d,
PIMA15740_RESP_SESSION_ALREADY_OPEN = 0x201e,
PIMA15740_RESP_TRANSACTION_CANCELLED = 0x201f,
PIMA15740_RESP_SPECIFICATION_OF_DESTINATION_UNSUPPORTED = 0x2020,
};
enum pima15740_event_code {
PIMA15740_EVENT_UNDEFINED = 0x4000,
PIMA15740_EVENT_CANCEL_TRANSACTION = 0x4001,
PIMA15740_EVENT_OBJECT_ADDED = 0x4002,
PIMA15740_EVENT_OBJECT_REMOVED = 0x4003,
PIMA15740_EVENT_STORE_ADDED = 0x4004,
PIMA15740_EVENT_STORE_REMOVED = 0x4005,
PIMA15740_EVENT_DEVICE_PROP_CHANGED = 0x4006,
PIMA15740_EVENT_OBJECT_INFO_CHANGED = 0x4007,
PIMA15740_EVENT_DEVICE_INFO_CHANGED = 0x4008,
PIMA15740_EVENT_REQUEST_OBJECT_TRANSFER = 0x4009,
PIMA15740_EVENT_STORE_FULL = 0x400a,
PIMA15740_EVENT_DEVICE_RESET = 0x400b,
PIMA15740_EVENT_STORAGE_INFO_CHANGED = 0x400c,
PIMA15740_EVENT_CAPTURE_COMPLETE = 0x400d,
PIMA15740_EVENT_UNREPORTED_STATUS = 0x400e,
};
enum pima15740_data_format {
PIMA15740_FMT_A_UNDEFINED = 0x3000,
PIMA15740_FMT_A_ASSOCIATION = 0x3001,
PIMA15740_FMT_A_TEXT = 0x3004,
PIMA15740_FMT_I_UNDEFINED = 0x3800,
PIMA15740_FMT_I_EXIF_JPEG = 0x3801,
PIMA15740_FMT_I_TIFF_EP = 0x3802,
PIMA15740_FMT_I_JFIF = 0x3808,
PIMA15740_FMT_I_PNG = 0x380b,
PIMA15740_FMT_I_TIFF = 0x380d,
PIMA15740_FMT_I_TIFF_IT = 0x380e,
};
enum pima15740_storage_type {
PIMA15740_STORAGE_UNDEFINED = 0,
PIMA15740_STORAGE_FIXED_ROM = 0x0001,
PIMA15740_STORAGE_REMOVABLE_ROM = 0x0002,
PIMA15740_STORAGE_FIXED_RAM = 0x0003,
PIMA15740_STORAGE_REMOVABLE_RAM = 0x0004,
};
enum pima15740_filesystem_type {
PIMA15740_FILESYSTEM_UNDEFINED = 0,
PIMA15740_FILESYSTEM_GENERIC_FLAT = 0x0001,
PIMA15740_FILESYSTEM_GENERIC_HIERARCH = 0x0002,
PIMA15740_FILESYSTEM_DCF = 0x0003,
};
enum pima15740_access_capability {
PIMA15740_ACCESS_CAP_RW = 0,
PIMA15740_ACCESS_CAP_RO_WITHOUT_DEL = 0x0001,
PIMA15740_ACCESS_CAP_RO_WITH_DEL = 0x0002,
};
static const char manuf[] = PTP_MANUFACTURER;
static const char model[] = PTP_MODEL;
static const char storage_desc[] = PTP_STORAGE_DESC;
#define SUPPORTED_OPERATIONS \
__constant_cpu_to_le16(PIMA15740_OP_GET_DEVICE_INFO), \
__constant_cpu_to_le16(PIMA15740_OP_OPEN_SESSION), \
__constant_cpu_to_le16(PIMA15740_OP_CLOSE_SESSION), \
__constant_cpu_to_le16(PIMA15740_OP_GET_STORAGE_IDS), \
__constant_cpu_to_le16(PIMA15740_OP_GET_STORAGE_INFO), \
__constant_cpu_to_le16(PIMA15740_OP_GET_NUM_OBJECTS), \
__constant_cpu_to_le16(PIMA15740_OP_GET_OBJECT_HANDLES),\
__constant_cpu_to_le16(PIMA15740_OP_GET_OBJECT_INFO), \
__constant_cpu_to_le16(PIMA15740_OP_GET_OBJECT), \
__constant_cpu_to_le16(PIMA15740_OP_GET_THUMB), \
__constant_cpu_to_le16(PIMA15740_OP_DELETE_OBJECT), \
__constant_cpu_to_le16(PIMA15740_OP_SEND_OBJECT_INFO), \
__constant_cpu_to_le16(PIMA15740_OP_SEND_OBJECT),
static uint16_t dummy_supported_operations[] = {
SUPPORTED_OPERATIONS
};
#ifdef FORMAT_SUPPORT
#define SUPPORTED_FORMATS \
__constant_cpu_to_le16(PIMA15740_FMT_A_UNDEFINED), \
__constant_cpu_to_le16(PIMA15740_FMT_A_TEXT), \
__constant_cpu_to_le16(PIMA15740_FMT_I_EXIF_JPEG), \
__constant_cpu_to_le16(PIMA15740_FMT_I_TIFF_EP), \
__constant_cpu_to_le16(PIMA15740_FMT_I_PNG), \
__constant_cpu_to_le16(PIMA15740_FMT_I_TIFF), \
__constant_cpu_to_le16(PIMA15740_FMT_I_TIFF_IT), \
__constant_cpu_to_le16(PIMA15740_FMT_I_JFIF),
#else
#define SUPPORTED_FORMATS \
__constant_cpu_to_le16(PIMA15740_FMT_A_UNDEFINED),
#endif
static uint16_t dummy_supported_formats[] = {
SUPPORTED_FORMATS
};
#define SUPPORTED_EVENTS \
__constant_cpu_to_le16(PIMA15740_EVENT_OBJECT_ADDED), \
__constant_cpu_to_le16(PIMA15740_EVENT_OBJECT_REMOVED), \
__constant_cpu_to_le16(PIMA15740_EVENT_OBJECT_INFO_CHANGED),
static uint16_t dummy_supported_events[] = {
SUPPORTED_EVENTS
};
struct my_device_info {
uint16_t std_ver;
uint32_t vendor_ext_id;
uint16_t vendor_ext_ver;
uint8_t vendor_ext_desc_len;
uint16_t func_mode;
uint32_t operations_n;
uint16_t operations[ARRAY_SIZE(dummy_supported_operations)];
uint32_t events_n;
uint16_t events[ARRAY_SIZE(dummy_supported_events)];
uint32_t device_properties_n;
uint32_t capture_formats_n;
uint32_t image_formats_n;
uint16_t image_formats[ARRAY_SIZE(dummy_supported_formats)];
uint8_t manuf_len;
uint8_t manuf[sizeof(manuf) * 2];
uint8_t model_len;
uint8_t model[sizeof(model) * 2];
uint8_t dev_version_len;
uint8_t serial_num_len;
} __attribute__ ((packed));
struct my_device_info dev_info = {
.std_ver = __constant_cpu_to_le16(100), /* Standard version 1.00 */
.vendor_ext_id = __constant_cpu_to_le32(0),
.vendor_ext_ver = __constant_cpu_to_le16(0),
.vendor_ext_desc_len = __constant_cpu_to_le16(0),
.func_mode = __constant_cpu_to_le16(0),
.operations_n = __constant_cpu_to_le32(ARRAY_SIZE(dummy_supported_operations)),
.operations = {
SUPPORTED_OPERATIONS
},
.events_n = __constant_cpu_to_le32(ARRAY_SIZE(dummy_supported_events)),
.events = {
SUPPORTED_EVENTS
},
.device_properties_n = __constant_cpu_to_le32(0),
.capture_formats_n = __constant_cpu_to_le32(0),
.image_formats_n = __constant_cpu_to_le32(ARRAY_SIZE(dummy_supported_formats)),
.image_formats = {
SUPPORTED_FORMATS
},
.manuf_len = sizeof(manuf),
.model_len = sizeof(model),
.dev_version_len = 0,
.serial_num_len = 0,
};
struct my_storage_info {
uint16_t storage_type;
uint16_t filesystem_type;
uint16_t access_capability;
uint64_t max_capacity;
uint64_t free_space_in_bytes;
uint32_t free_space_in_images;
uint8_t desc_len;
uint8_t desc[sizeof(storage_desc) * 2];
uint8_t volume_label_len;
} __attribute__ ((packed));
static struct my_storage_info storage_info = {
.storage_type = __constant_cpu_to_le16(PIMA15740_STORAGE_REMOVABLE_RAM),
.filesystem_type = __constant_cpu_to_le16(PIMA15740_FILESYSTEM_DCF),
.access_capability = __constant_cpu_to_le16(PIMA15740_ACCESS_CAP_RW),
.desc_len = sizeof(storage_desc),
.volume_label_len = 0,
};
/* full duplex data, with at least three threads: ep0, sink, and source */
static int bulk_in = -ENXIO;
static int bulk_out = -ENXIO;
static int control = -ENXIO;
static int interrupt = -ENXIO;
static int session = -EINVAL;
static int notify_fd = -ENXIO;
static sem_t reset;
static sem_t dbaccess;
static iconv_t ic, uc;
static char *root;
static char *lockdir = "/tmp";
#define NEVENT 5
enum ptp_status {
PTP_WAITCONFIG, /* Waiting to be configured */
PTP_IDLE, /* Waiting for control / bulk-out */
PTP_DATA_OUT, /* Data arrival on bulk-out expected */
PTP_DATA_READY, /* Finished receive, have to process and send (Data and) Response */
PTP_DATA_IN, /* Waiting for bulk-in to become free for more data */
};
static enum ptp_status status = PTP_WAITCONFIG;
static pthread_t bulk_pthread;
static pthread_t inotify_pthread;
#define __stringify_1(x) #x
#define __stringify(x) __stringify_1(x)
#define BUF_SIZE 4096
#ifdef THUMB_SUPPORT
#define THUMB_WIDTH 160
#define THUMB_HEIGHT 120
#define THUMB_SIZE __stringify(THUMB_WIDTH) "x" __stringify(THUMB_HEIGHT)
#define THUMB_LOCATION "/var/cache/ptp/thumb/"
#endif
struct ptp_event_container {
uint32_t length;
uint16_t type;
uint16_t event_code;
uint32_t transaction_id;
uint32_t parameter1;
uint32_t parameter2;
uint32_t parameter3;
} __attribute__ ((packed));
struct ptp_object_info {
uint32_t storage_id;
uint16_t object_format;
uint16_t protection_status;
uint32_t object_compressed_size;
uint16_t thumb_format;
uint32_t thumb_compressed_size;
uint32_t thumb_pix_width;
uint32_t thumb_pix_height;
uint32_t image_pix_width;
uint32_t image_pix_height;
uint32_t image_bit_depth;
uint32_t parent_object;
uint16_t association_type;
uint32_t association_desc;
uint32_t sequence_number;
uint8_t strings[];
} __attribute__ ((packed));
struct obj_list {
struct obj_list *next;
uint32_t handle;
size_t info_size;
char name[256];
struct ptp_object_info info;
};
#define GFOREACH(item, list) for(iterator = list; (item = NULL, 1) && iterator && (item = iterator->data, 1); iterator = g_slist_next(iterator))
static GSList *images;
/* number of objects, including associations - decrement when deleting */
static int last_object_number;
static struct obj_list *object_info_p;
static size_t put_string(iconv_t ic, char *buf, const char *s, size_t len);
static size_t get_string(iconv_t ic, char *buf, const char *s, size_t len);
static void inotify_sync();
static int object_handle_valid(unsigned int h)
{
struct obj_list *obj;
GSList *iterator;
GFOREACH(obj, images) {
if (obj->handle == h)
return 1;
}
return 0;
}
/*-------------------------------------------------------------------------*/
static void make_response(struct ptp_container *s_cntn, struct ptp_container *r_cntn,
enum pima15740_response_code code, size_t len)
{
s_cntn->id = r_cntn->id;
s_cntn->type = __cpu_to_le16(PTP_CONTAINER_TYPE_RESPONSE_BLOCK);
s_cntn->code = __cpu_to_le16(code);
s_cntn->length = __cpu_to_le32(len);
}
static int bulk_write(void *buf, size_t length)
{
size_t count = 0;
int ret;
do {
ret = write(bulk_in, buf + count, length - count);
if (ret < 0) {
if (errno != EINTR)
return ret;
/* Need to wait for control thread to finish reset */
sem_wait(&reset);
} else
count += ret;
} while (count < length);
if (verbose)
fprintf(stderr, "BULK-IN Sent %u bytes\n", (unsigned int)count);
return count;
}
static int bulk_read(void *buf, size_t length)
{
size_t count = 0;
int ret;
do {
ret = read(bulk_out, buf + count, length - count);
if (ret < 0) {
if (errno != EINTR)
return ret;
/* Need to wait for control thread to finish reset */
sem_wait(&reset);
} else
count += ret;
} while (count < length);
if (verbose)
fprintf(stderr, "BULK-OUT Read %u bytes\n", (unsigned int)count);
return count;
}
static int interrupt_write(void *buf, size_t length) {
size_t count = 0;
int ret;
do {
ret = write(interrupt, buf + count, length - count);
if (ret < 0) {
if (errno != EINTR)
return ret;
/* Need to wait for control thread to finish reset */
sem_wait(&reset);
} else
count += ret;
} while (count < length);
if (verbose)
fprintf(stderr, "INTERRUPT sent %u bytes\n", (unsigned int) count);
return count;
}
static int send_event(enum pima15740_event_code code, unsigned int param1) {
struct ptp_event_container event;
int len = 12 + 3 * 4; /* 12 + parameters*4 */
event.length = __cpu_to_le32(len);
event.type = __cpu_to_le16(PTP_CONTAINER_TYPE_EVENT_BLOCK);
event.event_code = __cpu_to_le16(code);
event.transaction_id = __cpu_to_le32(0);
event.parameter1 = __cpu_to_le32(param1);
event.parameter2 = __cpu_to_le32(0);
event.parameter3 = __cpu_to_le32(0);
if (verbose)
fprintf(stderr, "sending event, code: 0x%04X, parameter1: 0x%08X\n", code, param1);
return interrupt_write(&event, len);
}
static int send_object_handles(void *recv_buf, void *send_buf, size_t send_len)
{
struct ptp_container *r_container = recv_buf;
struct ptp_container *s_container = send_buf;
unsigned long length;
uint32_t *param;
uint32_t store_id;
struct obj_list *obj;
GSList *iterator = NULL;
int ret;
uint32_t *handle;
uint32_t format;
int obj_to_send = g_slist_length(images);
length = __le32_to_cpu(r_container->length);
param = (uint32_t *)r_container->payload;
store_id = __le32_to_cpu(*param);
/* supported storage IDs: 0x00010001 - our single storage, 0xffffffff - all stores */
if (store_id != STORE_ID && store_id != PTP_PARAM_ANY) {
make_response(s_container, r_container,
PIMA15740_RESP_INVALID_STORAGE_ID, sizeof(*s_container));
return 0;
}
format = __le32_to_cpu(*(param + 1));
if (length > 16 && format != PTP_PARAM_UNUSED && format != PTP_PARAM_ANY) {
make_response(s_container, r_container,
PIMA15740_RESP_SPECIFICATION_BY_FORMAT_NOT_SUPPORTED,
sizeof(*s_container));
return 0;
}
s_container->type = __cpu_to_le16(PTP_CONTAINER_TYPE_DATA_BLOCK);
*(uint32_t *)s_container->payload = __cpu_to_le32(obj_to_send);
s_container->length = __cpu_to_le32((obj_to_send + 1) * sizeof(uint32_t) +
sizeof(*s_container));
handle = (uint32_t *)s_container->payload + 1;
GFOREACH(obj, images) {
if ((void *)handle == send_buf + send_len) {
ret = bulk_write(send_buf, send_len);
if (ret < 0) {
errno = EPIPE;
return ret;
}
handle = send_buf;
}
*handle++ = __cpu_to_le32(obj->handle);
}
if ((void *)handle > send_buf) {
ret = bulk_write(send_buf, (void *)handle - send_buf);
if (ret < 0) {
errno = EPIPE;
return ret;
}
}
/* Prepare response */
make_response(s_container, r_container, PIMA15740_RESP_OK, sizeof(*s_container));
return 0;
}
static int send_object_info(void *recv_buf, void *send_buf, size_t send_len)
{
struct ptp_container *r_container = recv_buf;
struct ptp_container *s_container = send_buf;
uint32_t *param;
struct obj_list *obj = NULL;
GSList *iterator;
int ret;
uint32_t handle;
size_t count, total, offset;
void *info;
enum pima15740_response_code code = PIMA15740_RESP_OK;
param = (uint32_t *)r_container->payload;
handle = __le32_to_cpu(*param);
GFOREACH(obj, images) {
if (obj->handle == handle)
break;
}
if (!obj) {
code = PIMA15740_RESP_INVALID_OBJECT_HANDLE;
goto send_resp;
}
s_container->type = __cpu_to_le16(PTP_CONTAINER_TYPE_DATA_BLOCK);
total = obj->info_size + sizeof(*s_container);
s_container->length = __cpu_to_le32(total);
offset = sizeof(*s_container);
info = &obj->info;
/* Object Info cannot get > 4096 bytes - four strings make a maximum of 2048
* bytes plus a fixed-size block, but we play safe for the case someone
* makes the buffers smaller */
while (total) {
count = min(total, send_len);
memcpy(send_buf + offset, info, count - offset);
info += count - offset;
ret = bulk_write(send_buf, count);
if (ret < 0) {
errno = EPIPE;
return ret;
}
offset = 0;
total -= count;
}
send_resp:
/* Prepare response */
make_response(s_container, r_container, code, sizeof(*s_container));
return 0;
}
static int send_object_or_thumb(void *recv_buf, void *send_buf, size_t send_len, int thumb)
{
struct ptp_container *r_container = recv_buf;
struct ptp_container *s_container = send_buf;
uint32_t *param;
struct obj_list *obj = NULL;
GSList *iterator;
int ret;
uint32_t handle;
size_t count, total, offset, file_size;
void *data, *map;
int fd = -1;
char name[256];
param = (uint32_t *)r_container->payload;
handle = __le32_to_cpu(*param);
GFOREACH(obj, images) {
if (obj->handle == handle)
break;
}
if (!obj) {
make_response(s_container, r_container, PIMA15740_RESP_INVALID_OBJECT_HANDLE,
sizeof(*s_container));
return 0;
}
s_container->type = __cpu_to_le16(PTP_CONTAINER_TYPE_DATA_BLOCK);
offset = sizeof(*s_container);
#ifdef THUMB_SUPPORT
if (!thumb) {
strncpy(name, obj->name, sizeof(name) - 1);
name[sizeof(name) - 1] = '\0';
ret = chdir(root);
file_size = __le32_to_cpu(obj->info.object_compressed_size);
} else {
char *dot = strrchr(obj->name, '.');
*dot = '\0'; /* We know there is a dot in the name */
snprintf(name, sizeof(name) - 1, "%s.thumb.jpeg", obj->name);
*dot = '.';
name[sizeof(name) - 1] = '\0';
ret = chdir(THUMB_LOCATION);
file_size = __le32_to_cpu(obj->info.thumb_compressed_size);
}
#else
(void)thumb;
strncpy(name, obj->name, sizeof(name) - 1);
name[sizeof(name) - 1] = '\0';
ret = chdir(root);
file_size = __le32_to_cpu(obj->info.object_compressed_size);
#endif
total = file_size + sizeof(*s_container);
if (verbose)
fprintf(stderr, "%s(): total %d\n", __func__, total);
s_container->length = __cpu_to_le32(total);
if (!ret)
fd = open(name, O_RDONLY);
if (ret < 0 || fd < 0) {
make_response(s_container, r_container, PIMA15740_RESP_INCOMPLETE_TRANSFER,
sizeof(*s_container));
return 0;
}
map = mmap(NULL, file_size, PROT_READ, MAP_SHARED, fd, 0);
if (map == MAP_FAILED) {
close(fd);
make_response(s_container, r_container, PIMA15740_RESP_INCOMPLETE_TRANSFER,
sizeof(*s_container));
return 0;
}
count = min(total, send_len);
memcpy(send_buf + offset, map, count - offset);
ret = bulk_write(send_buf, count);
if (ret < 0) {
errno = EPIPE;
goto out;
}
total -= count;
data = map + count - offset;
send_len = 8 * 1024;
while (total) {
count = min(total, send_len);
ret = bulk_write(data, count);
if (ret < 0) {
errno = EPIPE;
goto out;
}
total -= count;
data += count;
}
ret = 0;
out:
munmap(map, file_size);
close(fd);
if (!ret)
/* Prepare response */
make_response(s_container, r_container, PIMA15740_RESP_OK, sizeof(*s_container));
return ret;
}
static int send_storage_ids(void *recv_buf, void *send_buf, size_t send_len)
{
struct ptp_container *s_container = send_buf;
uint32_t *param;
int ret;
(void) send_len;
s_container->type = __cpu_to_le16(PTP_CONTAINER_TYPE_DATA_BLOCK);
s_container->length = __cpu_to_le32(20);
param = (uint32_t *)s_container->payload;
*param = __cpu_to_le32(1);
*(param + 1) = __cpu_to_le32(STORE_ID);
ret = bulk_write(send_buf, 20);
if (ret < 0) {
errno = EPIPE;
return ret;
}
/* Prepare response */
memcpy(send_buf, recv_buf, sizeof(*s_container));
s_container->type = __cpu_to_le16(PTP_CONTAINER_TYPE_RESPONSE_BLOCK);
s_container->code = __cpu_to_le16(PIMA15740_RESP_OK);
s_container->length = __cpu_to_le32(sizeof(*s_container));
return 0;
}
static int send_storage_info(void *recv_buf, void *send_buf, size_t send_len)
{
struct ptp_container *r_container = recv_buf;
struct ptp_container *s_container = send_buf;
uint32_t *param;
uint32_t store_id;
unsigned long long bytes;
int ret;
size_t count;
struct statfs fs;
(void) send_len;
param = (uint32_t *)r_container->payload;
store_id = __le32_to_cpu(*param);
if (verbose)
fprintf(stderr, "%u bytes storage info\n", sizeof(storage_info));
if (store_id != STORE_ID) {
make_response(s_container, r_container,
PIMA15740_RESP_INVALID_STORAGE_ID, sizeof(*s_container));
return 0;
}
ret = statfs(root, &fs);
if (ret < 0) {
make_response(s_container, r_container,
PIMA15740_RESP_ACCESS_DENIED, sizeof(*s_container));
return 0;
}
if (verbose > 1)
fprintf(stderr, "Block-size %d, total 0x%lx, free 0x%lx\n",
fs.f_bsize, fs.f_blocks, fs.f_bfree);
count = sizeof(storage_info) + sizeof(*s_container);
s_container->type = __cpu_to_le16(PTP_CONTAINER_TYPE_DATA_BLOCK);
s_container->length = __cpu_to_le32(count);
bytes = (unsigned long long)fs.f_bsize * fs.f_blocks;
storage_info.max_capacity = __cpu_to_le64(bytes);
bytes = (unsigned long long)fs.f_bsize * fs.f_bfree;
storage_info.free_space_in_bytes = __cpu_to_le64(bytes);
storage_info.free_space_in_images = __cpu_to_le32(PTP_PARAM_ANY);
memcpy(send_buf + sizeof(*s_container), &storage_info, sizeof(storage_info));
ret = bulk_write(s_container, count);
if (ret < 0) {
errno = EPIPE;
return ret;
}
/* Prepare response */
make_response(s_container, r_container, PIMA15740_RESP_OK, sizeof(*s_container));