X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/2d21ac55c334faf3a56e5634905ed6987fc787d4..3903760236c30e3b5ace7a4eefac3a269d68957c:/bsd/kern/netboot.c?ds=sidebyside diff --git a/bsd/kern/netboot.c b/bsd/kern/netboot.c index 3f2c11a86..e8bdddb34 100644 --- a/bsd/kern/netboot.c +++ b/bsd/kern/netboot.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2001-2006 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2001-2013 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * @@ -53,11 +53,11 @@ #include #include #include -#include #include #include - +#include +#include #include //#include @@ -81,27 +81,10 @@ const void * IOBSDRegistryEntryGetData(void * entry, const char * property_name, int * packet_length); -extern int vndevice_root_image(const char * path, char devname[], - dev_t * dev_p); -extern int di_root_image(const char *path, char devname[], dev_t *dev_p); - #define BOOTP_RESPONSE "bootp-response" #define BSDP_RESPONSE "bsdp-response" #define DHCP_RESPONSE "dhcp-response" -/* forward declarations */ -int inet_aton(char * cp, struct in_addr * pin); - -boolean_t netboot_iaddr(struct in_addr * iaddr_p); -boolean_t netboot_rootpath(struct in_addr * server_ip, - char * name, int name_len, - char * path, int path_len); -int netboot_setup(void); -int netboot_mountroot(void); -int netboot_root(void); - - - #define IP_FORMAT "%d.%d.%d.%d" #define IP_CH(ip) ((u_char *)ip) #define IP_LIST(ip) IP_CH(ip)[0],IP_CH(ip)[1],IP_CH(ip)[2],IP_CH(ip)[3] @@ -125,29 +108,10 @@ struct netboot_info { char * image_path; int image_path_length; NetBootImageType image_type; - boolean_t use_hdix; + char * second_image_path; + int second_image_path_length; }; -int -inet_aton(char * cp, struct in_addr * pin) -{ - u_char * b = (u_char *)pin; - int i; - char * p; - - for (p = cp, i = 0; i < 4; i++) { - u_long l = strtoul(p, 0, 0); - if (l > 255) - return (FALSE); - b[i] = l; - p = strchr(p, '.'); - if (i < 3 && p == NULL) - return (FALSE); - p++; - } - return (TRUE); -} - /* * Function: parse_booter_path * Purpose: @@ -251,7 +215,7 @@ static __inline__ boolean_t parse_netboot_path(char * path, struct in_addr * iaddr_p, char const * * host, char * * mount_dir, char * * image_path) { - static char tmp[MAX_IPv4_STR_LEN]; /* Danger - not thread safe */ + static char tmp[MAX_IPv4_STR_LEN]; /* Danger - not thread safe */ char * start; char * colon; @@ -346,35 +310,46 @@ get_root_path(char * root_path) } +static void +save_path(char * * str_p, int * length_p, char * path) +{ + *length_p = strlen(path) + 1; + *str_p = (char *)kalloc(*length_p); + strlcpy(*str_p, path, *length_p); + return; +} + static struct netboot_info * netboot_info_init(struct in_addr iaddr) { - struct netboot_info * info; + boolean_t have_root_path = FALSE; + struct netboot_info * info = NULL; char * root_path = NULL; - boolean_t use_hdix = TRUE; - char * vndevice = NULL; - - MALLOC_ZONE(vndevice, caddr_t, MAXPATHLEN, M_NAMEI, M_WAITOK); - if (vndevice == NULL) - panic("netboot_info_init: M_NAMEI zone exhausted"); - if (PE_parse_boot_argn("vndevice", vndevice, MAXPATHLEN) == TRUE) { - use_hdix = FALSE; - } - FREE_ZONE(vndevice, MAXPATHLEN, M_NAMEI); info = (struct netboot_info *)kalloc(sizeof(*info)); bzero(info, sizeof(*info)); info->client_ip = iaddr; info->image_type = kNetBootImageTypeUnknown; - info->use_hdix = use_hdix; /* check for a booter-specified path then a NetBoot path */ MALLOC_ZONE(root_path, caddr_t, MAXPATHLEN, M_NAMEI, M_WAITOK); if (root_path == NULL) panic("netboot_info_init: M_NAMEI zone exhausted"); - if (PE_parse_boot_argn("rp", root_path, MAXPATHLEN) == TRUE - || PE_parse_boot_argn("rootpath", root_path, MAXPATHLEN) == TRUE - || get_root_path(root_path) == TRUE) { + if (PE_parse_boot_argn("rp0", root_path, MAXPATHLEN) == TRUE + || PE_parse_boot_argn("rp", root_path, MAXPATHLEN) == TRUE + || PE_parse_boot_argn("rootpath", root_path, MAXPATHLEN) == TRUE) { + if (imageboot_format_is_valid(root_path)) { + printf("netboot_info_init: rp0='%s' isn't a network path," + " ignoring\n", root_path); + } + else { + have_root_path = TRUE; + } + } + if (have_root_path == FALSE) { + have_root_path = get_root_path(root_path); + } + if (have_root_path) { const char * server_name = NULL; char * mount_point = NULL; char * image_path = NULL; @@ -391,11 +366,11 @@ netboot_info_init(struct in_addr iaddr) strlcpy(info->server_name, server_name, info->server_name_length); strlcpy(info->mount_point, mount_point, info->mount_point_length); - printf("Server %s Mount %s", + printf("netboot: NFS Server %s Mount %s", server_name, info->mount_point); if (image_path != NULL) { boolean_t needs_slash = FALSE; - + info->image_path_length = strlen(image_path) + 1; if (image_path[0] != '/') { needs_slash = TRUE; @@ -416,16 +391,27 @@ netboot_info_init(struct in_addr iaddr) } else if (strncmp(root_path, kNetBootRootPathPrefixHTTP, strlen(kNetBootRootPathPrefixHTTP)) == 0) { - /* only HDIX supports HTTP */ info->image_type = kNetBootImageTypeHTTP; - info->use_hdix = TRUE; - info->image_path_length = strlen(root_path) + 1; - info->image_path = (char *)kalloc(info->image_path_length); - strlcpy(info->image_path, root_path, info->image_path_length); + save_path(&info->image_path, &info->image_path_length, + root_path); + printf("netboot: HTTP URL %s\n", info->image_path); } else { printf("netboot: root path uses unrecognized format\n"); } + + /* check for image-within-image */ + if (info->image_path != NULL) { + if (PE_parse_boot_argn(IMAGEBOOT_ROOT_ARG, root_path, MAXPATHLEN) + || PE_parse_boot_argn("rp1", root_path, MAXPATHLEN)) { + /* rp1/root-dmg is the second-level image */ + save_path(&info->second_image_path, &info->second_image_path_length, + root_path); + } + } + if (info->second_image_path != NULL) { + printf("netboot: nested image %s\n", info->second_image_path); + } } FREE_ZONE(root_path, MAXPATHLEN, M_NAMEI); return (info); @@ -446,6 +432,9 @@ netboot_info_free(struct netboot_info * * info_p) if (info->image_path) { kfree(info->image_path, info->image_path_length); } + if (info->second_image_path) { + kfree(info->second_image_path, info->second_image_path_length); + } kfree(info, sizeof(*info)); } *info_p = NULL; @@ -538,10 +527,11 @@ get_ip_parameters(struct in_addr * iaddr_p, struct in_addr * netmask_p, static int route_cmd(int cmd, struct in_addr d, struct in_addr g, - struct in_addr m, u_long more_flags) + struct in_addr m, uint32_t more_flags, unsigned int ifscope) { struct sockaddr_in dst; - u_long flags = RTF_UP | RTF_STATIC; + int error; + uint32_t flags = RTF_UP | RTF_STATIC; struct sockaddr_in gw; struct sockaddr_in mask; @@ -565,28 +555,31 @@ route_cmd(int cmd, struct in_addr d, struct in_addr g, mask.sin_family = AF_INET; mask.sin_addr = m; - return (rtrequest(cmd, (struct sockaddr *)&dst, (struct sockaddr *)&gw, - (struct sockaddr *)&mask, flags, NULL)); + error = rtrequest_scoped(cmd, (struct sockaddr *)&dst, + (struct sockaddr *)&gw, (struct sockaddr *)&mask, flags, NULL, ifscope); + + return (error); + } static int default_route_add(struct in_addr router, boolean_t proxy_arp) { - u_long flags = 0; + uint32_t flags = 0; struct in_addr zeroes = { 0 }; if (proxy_arp == FALSE) { flags |= RTF_GATEWAY; } - return (route_cmd(RTM_ADD, zeroes, router, zeroes, flags)); + return (route_cmd(RTM_ADD, zeroes, router, zeroes, flags, IFSCOPE_NONE)); } static int -host_route_delete(struct in_addr host) +host_route_delete(struct in_addr host, unsigned int ifscope) { struct in_addr zeroes = { 0 }; - return (route_cmd(RTM_DELETE, host, zeroes, zeroes, RTF_HOST)); + return (route_cmd(RTM_DELETE, host, zeroes, zeroes, RTF_HOST, ifscope)); } static struct ifnet * @@ -594,6 +587,7 @@ find_interface(void) { struct ifnet * ifp = NULL; + dlil_if_lock(); if (rootdevice[0]) { ifp = ifunit((char *)rootdevice); } @@ -604,9 +598,44 @@ find_interface(void) break; ifnet_head_done(); } + dlil_if_unlock(); return (ifp); } +static const struct sockaddr_in blank_sin = { + sizeof(struct sockaddr_in), + AF_INET, + 0, + { 0 }, + { 0, 0, 0, 0, 0, 0, 0, 0 } +}; + +static int +inet_aifaddr(struct socket * so, const char * name, + const struct in_addr * addr, + const struct in_addr * mask, + const struct in_addr * broadcast) +{ + struct ifaliasreq ifra; + + bzero(&ifra, sizeof(ifra)); + strlcpy(ifra.ifra_name, name, sizeof(ifra.ifra_name)); + if (addr) { + *((struct sockaddr_in *)(void *)&ifra.ifra_addr) = blank_sin; + ((struct sockaddr_in *)(void *)&ifra.ifra_addr)->sin_addr = *addr; + } + if (mask) { + *((struct sockaddr_in *)(void *)&ifra.ifra_mask) = blank_sin; + ((struct sockaddr_in *)(void *)&ifra.ifra_mask)->sin_addr = *mask; + } + if (broadcast) { + *((struct sockaddr_in *)(void *)&ifra.ifra_broadaddr) = blank_sin; + ((struct sockaddr_in *)(void *)&ifra.ifra_broadaddr)->sin_addr = *broadcast; + } + return (ifioctl(so, SIOCAIFADDR, (caddr_t)&ifra, current_proc())); +} + + int netboot_mountroot(void) { @@ -629,8 +658,7 @@ netboot_mountroot(void) error = ENXIO; goto failed; } - snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%s%d", ifp->if_name, - ifp->if_unit); + snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%s", if_name(ifp)); printf("netboot: using network interface '%s'\n", ifr.ifr_name); /* bring it up */ @@ -647,12 +675,8 @@ netboot_mountroot(void) /* grab information from the registry */ if (get_ip_parameters(&iaddr, &netmask, &router) == FALSE) { - /* use DHCP to retrieve IP address, netmask and router */ - error = dhcp(ifp, &iaddr, 64, &netmask, &router, procp); - if (error) { - printf("netboot: DHCP failed %d\n", error); - goto failed; - } + printf("netboot: can't retrieve IP parameters\n"); + goto failed; } printf("netboot: IP address " IP_FORMAT, IP_LIST(&iaddr)); if (netmask.s_addr) { @@ -705,7 +729,8 @@ netboot_mountroot(void) /* NOT REACHED */ case EHOSTDOWN: /* remove the server's arp entry */ - error = host_route_delete(S_netboot_info_p->server_ip); + error = host_route_delete(S_netboot_info_p->server_ip, + ifp->if_index); if (error) { printf("netboot: host_route_delete(" IP_FORMAT ") failed %d\n", @@ -713,7 +738,7 @@ netboot_mountroot(void) } break; case EHOSTUNREACH: - error = host_route_delete(router); + error = host_route_delete(router, ifp->if_index); if (error) { printf("netboot: host_route_delete(" IP_FORMAT ") failed %d\n", IP_LIST(&router), error); @@ -743,53 +768,24 @@ failed: int netboot_setup() { - dev_t dev; int error = 0; if (S_netboot_info_p == NULL || S_netboot_info_p->image_path == NULL) { goto done; } - if (S_netboot_info_p->use_hdix) { - printf("netboot_setup: calling di_root_image\n"); - error = di_root_image(S_netboot_info_p->image_path, - (char *)rootdevice, &dev); - if (error) { - printf("netboot_setup: di_root_image: failed %d\n", error); - goto done; - } + printf("netboot_setup: calling imageboot_mount_image\n"); + error = imageboot_mount_image(S_netboot_info_p->image_path, -1); + if (error != 0) { + printf("netboot: failed to mount root image, %d\n", error); } - else { - printf("netboot_setup: calling vndevice_root_image\n"); - error = vndevice_root_image(S_netboot_info_p->image_path, - (char *)rootdevice, &dev); - if (error) { - printf("netboot_setup: vndevice_root_image: failed %d\n", error); - goto done; + else if (S_netboot_info_p->second_image_path != NULL) { + error = imageboot_mount_image(S_netboot_info_p->second_image_path, 0); + if (error != 0) { + printf("netboot: failed to mount second root image, %d\n", error); } } - rootdev = dev; - mountroot = NULL; - printf("netboot: root device 0x%x\n", rootdev); - error = vfs_mountroot(); - if (error == 0 && rootvnode != NULL) { - struct vnode *tvp; - struct vnode *newdp; - - /* Get the vnode for '/'. Set fdp->fd_fd.fd_cdir to reference it. */ - if (VFS_ROOT(TAILQ_LAST(&mountlist,mntlist), &newdp, vfs_context_kernel())) - panic("netboot_setup: cannot find root vnode"); - vnode_ref(newdp); - vnode_put(newdp); - tvp = rootvnode; - vnode_rele(tvp); - filedesc0.fd_cdir = newdp; - rootvnode = newdp; - mount_list_lock(); - TAILQ_REMOVE(&mountlist, TAILQ_FIRST(&mountlist), mnt_list); - mount_list_unlock(); - mountlist.tqh_first->mnt_flag |= MNT_ROOTFS; - } + done: netboot_info_free(&S_netboot_info_p); return (error);