/* * Copyright (C) 2015-2016 Samsung Electronics * Igor Kotrasinski * Krzysztof Opasiak * * Refactored from usbip_host_driver.c, which is: * Copyright (C) 2011 matt mooney * 2005-2007 Takahiro Hirofuchi * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include #include #include #include #include #include #include "usbip_common.h" #include "usbip_host_common.h" #include "list.h" #include "sysfs_utils.h" struct udev *udev_context; static int32_t read_attr_usbip_status(struct usbip_usb_device *udev) { char status_attr_path[SYSFS_PATH_MAX]; int fd; int length; char status; int value = 0; snprintf(status_attr_path, SYSFS_PATH_MAX, "%s/usbip_status", udev->path); fd = open(status_attr_path, O_RDONLY); if (fd < 0) { err("error opening attribute %s", status_attr_path); return -1; } length = read(fd, &status, 1); if (length < 0) { err("error reading attribute %s", status_attr_path); close(fd); return -1; } value = atoi(&status); return value; } static struct usbip_exported_device *usbip_exported_device_new( struct usbip_host_driver *hdriver, const char *sdevpath) { struct usbip_exported_device *edev = NULL; struct usbip_exported_device *edev_old; size_t size; int i; edev = calloc(1, sizeof(struct usbip_exported_device)); edev->sudev = udev_device_new_from_syspath(udev_context, sdevpath); if (!edev->sudev) { err("udev_device_new_from_syspath: %s", sdevpath); goto err; } if (hdriver->ops.read_device(edev->sudev, &edev->udev) < 0) goto err; edev->status = read_attr_usbip_status(&edev->udev); if (edev->status < 0) goto err; /* reallocate buffer to include usb interface data */ size = sizeof(struct usbip_exported_device) + edev->udev.bNumInterfaces * sizeof(struct usbip_usb_interface); edev_old = edev; edev = realloc(edev, size); if (!edev) { edev = edev_old; dbg("realloc failed"); goto err; } for (i = 0; i < edev->udev.bNumInterfaces; i++) { /* vudc does not support reading interfaces */ if (!hdriver->ops.read_interface) break; hdriver->ops.read_interface(&edev->udev, i, &edev->uinf[i]); } return edev; err: if (edev->sudev) udev_device_unref(edev->sudev); if (edev) free(edev); return NULL; } static int refresh_exported_devices(struct usbip_host_driver *hdriver) { struct usbip_exported_device *edev; struct udev_enumerate *enumerate; struct udev_list_entry *devices, *dev_list_entry; struct udev_device *dev; const char *path; enumerate = udev_enumerate_new(udev_context); udev_enumerate_add_match_subsystem(enumerate, hdriver->udev_subsystem); udev_enumerate_scan_devices(enumerate); devices = udev_enumerate_get_list_entry(enumerate); udev_list_entry_foreach(dev_list_entry, devices) { path = udev_list_entry_get_name(dev_list_entry); dev = udev_device_new_from_syspath(udev_context, path); if (dev == NULL) continue; /* Check whether device uses usbip driver. */ if (hdriver->ops.is_my_device(dev)) { edev = usbip_exported_device_new(hdriver, path); if (!edev) { dbg("usbip_exported_device_new failed"); continue; } list_add(&edev->node, &hdriver->edev_list); hdriver->ndevs++; } } return 0; } static void usbip_exported_device_destroy(struct list_head *devs) { struct list_head *i, *tmp; struct usbip_exported_device *edev; list_for_each_safe(i, tmp, devs) { edev = list_entry(i, struct usbip_exported_device, node); list_del(i); free(edev); } } int usbip_generic_driver_open(struct usbip_host_driver *hdriver) { int rc; udev_context = udev_new(); if (!udev_context) { err("udev_new failed"); return -1; } rc = refresh_exported_devices(hdriver); if (rc < 0) goto err; return 0; err: udev_unref(udev_context); return -1; } void usbip_generic_driver_close(struct usbip_host_driver *hdriver) { if (!hdriver) return; usbip_exported_device_destroy(&hdriver->edev_list); udev_unref(udev_context); } int usbip_generic_refresh_device_list(struct usbip_host_driver *hdriver) { int rc; usbip_exported_device_destroy(&hdriver->edev_list); hdriver->ndevs = 0; INIT_LIST_HEAD(&hdriver->edev_list); rc = refresh_exported_devices(hdriver); if (rc < 0) return -1; return 0; } int usbip_export_device(struct usbip_exported_device *edev, int sockfd) { char attr_name[] = "usbip_sockfd"; char sockfd_attr_path[SYSFS_PATH_MAX]; char sockfd_buff[30]; int ret; if (edev->status != SDEV_ST_AVAILABLE) { dbg("device not available: %s", edev->udev.busid); switch (edev->status) { case SDEV_ST_ERROR: dbg("status SDEV_ST_ERROR"); break; case SDEV_ST_USED: dbg("status SDEV_ST_USED"); break; default: dbg("status unknown: 0x%x", edev->status); } return -1; } /* only the first interface is true */ snprintf(sockfd_attr_path, sizeof(sockfd_attr_path), "%s/%s", edev->udev.path, attr_name); snprintf(sockfd_buff, sizeof(sockfd_buff), "%d\n", sockfd); ret = write_sysfs_attribute(sockfd_attr_path, sockfd_buff, strlen(sockfd_buff)); if (ret < 0) { err("write_sysfs_attribute failed: sockfd %s to %s", sockfd_buff, sockfd_attr_path); return ret; } info("connect: %s", edev->udev.busid); return ret; } struct usbip_exported_device *usbip_generic_get_device( struct usbip_host_driver *hdriver, int num) { struct list_head *i; struct usbip_exported_device *edev; int cnt = 0; list_for_each(i, &hdriver->edev_list) { edev = list_entry(i, struct usbip_exported_device, node); if (num == cnt) return edev; cnt++; } return NULL; } vice structure. This field is of type const, so add const to declaration of device_type structure. File size before: text data bss dec hex filename 19278 3199 16 22493 57dd nvdimm/namespace_devs.o File size after: text data bss dec hex filename 19929 3160 16 23105 5a41 nvdimm/namespace_devs.o Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/uapi/asm-generic/termbits.h')