17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5ba2e4443Sseb * Common Development and Distribution License (the "License"). 6ba2e4443Sseb * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 22ba2e4443Sseb * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 237c478bd9Sstevel@tonic-gate * Use is subject to license terms. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 277c478bd9Sstevel@tonic-gate 287c478bd9Sstevel@tonic-gate #include <unistd.h> 297c478bd9Sstevel@tonic-gate #include <stropts.h> 307c478bd9Sstevel@tonic-gate #include <errno.h> 310ba2cbe9Sxc #include <fcntl.h> 320ba2cbe9Sxc #include <strings.h> 330ba2cbe9Sxc #include <dirent.h> 347c478bd9Sstevel@tonic-gate #include <net/if.h> 350ba2cbe9Sxc #include <sys/stat.h> 360ba2cbe9Sxc #include <sys/dld.h> 370ba2cbe9Sxc #include <libdlpi.h> 380ba2cbe9Sxc #include <libdevinfo.h> 390ba2cbe9Sxc #include <libdladm_impl.h> 40*33343a97Smeem #include <libintl.h> 417c478bd9Sstevel@tonic-gate 42aae21359Skrgopi typedef struct dladm_dev { 43aae21359Skrgopi char dd_name[IFNAMSIZ]; 44aae21359Skrgopi struct dladm_dev *dd_next; 45aae21359Skrgopi } dladm_dev_t; 46aae21359Skrgopi 47aae21359Skrgopi typedef struct dladm_walk { 48aae21359Skrgopi dladm_dev_t *dw_dev_list; 49aae21359Skrgopi } dladm_walk_t; 50aae21359Skrgopi 510ba2cbe9Sxc static char dladm_rootdir[MAXPATHLEN] = "/"; 520ba2cbe9Sxc 537c478bd9Sstevel@tonic-gate /* 547c478bd9Sstevel@tonic-gate * Issue an ioctl to the specified file descriptor attached to the 557c478bd9Sstevel@tonic-gate * DLD control driver interface. 567c478bd9Sstevel@tonic-gate */ 570ba2cbe9Sxc int 58210db224Sericheng i_dladm_ioctl(int fd, int ic_cmd, void *ic_dp, int ic_len) 597c478bd9Sstevel@tonic-gate { 607c478bd9Sstevel@tonic-gate struct strioctl iocb; 617c478bd9Sstevel@tonic-gate 627c478bd9Sstevel@tonic-gate iocb.ic_cmd = ic_cmd; 637c478bd9Sstevel@tonic-gate iocb.ic_timout = 0; 647c478bd9Sstevel@tonic-gate iocb.ic_len = ic_len; 65210db224Sericheng iocb.ic_dp = (char *)ic_dp; 667c478bd9Sstevel@tonic-gate 677c478bd9Sstevel@tonic-gate return (ioctl(fd, I_STR, &iocb)); 687c478bd9Sstevel@tonic-gate } 697c478bd9Sstevel@tonic-gate 707c478bd9Sstevel@tonic-gate /* 717c478bd9Sstevel@tonic-gate * Return the attributes of the specified datalink from the DLD driver. 727c478bd9Sstevel@tonic-gate */ 737c478bd9Sstevel@tonic-gate static int 747c478bd9Sstevel@tonic-gate i_dladm_info(int fd, const char *name, dladm_attr_t *dap) 757c478bd9Sstevel@tonic-gate { 767c478bd9Sstevel@tonic-gate dld_ioc_attr_t dia; 777c478bd9Sstevel@tonic-gate 787c478bd9Sstevel@tonic-gate if (strlen(name) >= IFNAMSIZ) { 797c478bd9Sstevel@tonic-gate errno = EINVAL; 807c478bd9Sstevel@tonic-gate return (-1); 817c478bd9Sstevel@tonic-gate } 827c478bd9Sstevel@tonic-gate 837c478bd9Sstevel@tonic-gate (void) strlcpy(dia.dia_name, name, IFNAMSIZ); 847c478bd9Sstevel@tonic-gate 85210db224Sericheng if (i_dladm_ioctl(fd, DLDIOCATTR, &dia, sizeof (dia)) < 0) 867c478bd9Sstevel@tonic-gate return (-1); 877c478bd9Sstevel@tonic-gate 887c478bd9Sstevel@tonic-gate (void) strlcpy(dap->da_dev, dia.dia_dev, MAXNAMELEN); 89210db224Sericheng dap->da_max_sdu = dia.dia_max_sdu; 907c478bd9Sstevel@tonic-gate dap->da_vid = dia.dia_vid; 917c478bd9Sstevel@tonic-gate 927c478bd9Sstevel@tonic-gate return (0); 937c478bd9Sstevel@tonic-gate } 947c478bd9Sstevel@tonic-gate 957c478bd9Sstevel@tonic-gate /* 967c478bd9Sstevel@tonic-gate * Adds a datalink to the array corresponding to arg. 977c478bd9Sstevel@tonic-gate */ 987c478bd9Sstevel@tonic-gate static void 997c478bd9Sstevel@tonic-gate i_dladm_nt_net_add(void *arg, char *name) 1007c478bd9Sstevel@tonic-gate { 101aae21359Skrgopi dladm_walk_t *dwp = arg; 102aae21359Skrgopi dladm_dev_t *ddp = dwp->dw_dev_list; 103aae21359Skrgopi dladm_dev_t **lastp = &dwp->dw_dev_list; 104aae21359Skrgopi 105aae21359Skrgopi while (ddp) { 106aae21359Skrgopi /* 107aae21359Skrgopi * Skip duplicates. 108aae21359Skrgopi */ 109aae21359Skrgopi if (strcmp(ddp->dd_name, name) == 0) 1107c478bd9Sstevel@tonic-gate return; 111aae21359Skrgopi 112aae21359Skrgopi lastp = &ddp->dd_next; 113aae21359Skrgopi ddp = ddp->dd_next; 1147c478bd9Sstevel@tonic-gate } 1157c478bd9Sstevel@tonic-gate 116aae21359Skrgopi if ((ddp = malloc(sizeof (*ddp))) == NULL) 117aae21359Skrgopi return; 118aae21359Skrgopi 119aae21359Skrgopi (void) strlcpy(ddp->dd_name, name, IFNAMSIZ); 120aae21359Skrgopi ddp->dd_next = NULL; 121aae21359Skrgopi *lastp = ddp; 1227c478bd9Sstevel@tonic-gate } 1237c478bd9Sstevel@tonic-gate 1247c478bd9Sstevel@tonic-gate /* 1257c478bd9Sstevel@tonic-gate * Walker callback invoked for each DDI_NT_NET node. 1267c478bd9Sstevel@tonic-gate */ 1277c478bd9Sstevel@tonic-gate static int 1287c478bd9Sstevel@tonic-gate i_dladm_nt_net_walk(di_node_t node, di_minor_t minor, void *arg) 1297c478bd9Sstevel@tonic-gate { 1307c478bd9Sstevel@tonic-gate dl_info_ack_t dlia; 1317c478bd9Sstevel@tonic-gate char name[IFNAMSIZ]; 1327c478bd9Sstevel@tonic-gate int fd; 1337c478bd9Sstevel@tonic-gate char *provider; 1347c478bd9Sstevel@tonic-gate uint_t ppa; 1357c478bd9Sstevel@tonic-gate 1367c478bd9Sstevel@tonic-gate provider = di_minor_name(minor); 1377c478bd9Sstevel@tonic-gate 1387c478bd9Sstevel@tonic-gate if ((fd = dlpi_open(provider)) < 0) 1397c478bd9Sstevel@tonic-gate return (DI_WALK_CONTINUE); 1407c478bd9Sstevel@tonic-gate 1417c478bd9Sstevel@tonic-gate if (dlpi_info(fd, -1, &dlia, NULL, NULL, NULL, NULL, NULL, NULL) < 0) { 1427c478bd9Sstevel@tonic-gate (void) dlpi_close(fd); 1437c478bd9Sstevel@tonic-gate return (DI_WALK_CONTINUE); 1447c478bd9Sstevel@tonic-gate } 1457c478bd9Sstevel@tonic-gate 1467c478bd9Sstevel@tonic-gate if (dlia.dl_provider_style == DL_STYLE1) { 1477c478bd9Sstevel@tonic-gate i_dladm_nt_net_add(arg, provider); 1487c478bd9Sstevel@tonic-gate (void) dlpi_close(fd); 1497c478bd9Sstevel@tonic-gate return (DI_WALK_CONTINUE); 1507c478bd9Sstevel@tonic-gate } 1517c478bd9Sstevel@tonic-gate 1527c478bd9Sstevel@tonic-gate ppa = di_instance(node); 1537c478bd9Sstevel@tonic-gate 1547c478bd9Sstevel@tonic-gate if (dlpi_attach(fd, -1, ppa) < 0) { 1557c478bd9Sstevel@tonic-gate (void) dlpi_close(fd); 1567c478bd9Sstevel@tonic-gate return (DI_WALK_CONTINUE); 1577c478bd9Sstevel@tonic-gate } 1587c478bd9Sstevel@tonic-gate (void) snprintf(name, IFNAMSIZ - 1, "%s%d", provider, ppa); 1597c478bd9Sstevel@tonic-gate i_dladm_nt_net_add(arg, name); 1607c478bd9Sstevel@tonic-gate (void) dlpi_close(fd); 1617c478bd9Sstevel@tonic-gate return (DI_WALK_CONTINUE); 1627c478bd9Sstevel@tonic-gate } 1637c478bd9Sstevel@tonic-gate 1647c478bd9Sstevel@tonic-gate /* 1657c478bd9Sstevel@tonic-gate * Invoke the specified callback function for each active DDI_NT_NET 1667c478bd9Sstevel@tonic-gate * node. 1677c478bd9Sstevel@tonic-gate */ 1687c478bd9Sstevel@tonic-gate int 1697c478bd9Sstevel@tonic-gate dladm_walk(void (*fn)(void *, const char *), void *arg) 1707c478bd9Sstevel@tonic-gate { 1717c478bd9Sstevel@tonic-gate di_node_t root; 172aae21359Skrgopi dladm_walk_t dw; 173aae21359Skrgopi dladm_dev_t *ddp, *last_ddp; 1747c478bd9Sstevel@tonic-gate 1757c478bd9Sstevel@tonic-gate if ((root = di_init("/", DINFOCACHE)) == DI_NODE_NIL) { 1767c478bd9Sstevel@tonic-gate errno = EFAULT; 1777c478bd9Sstevel@tonic-gate return (-1); 1787c478bd9Sstevel@tonic-gate } 179aae21359Skrgopi dw.dw_dev_list = NULL; 1807c478bd9Sstevel@tonic-gate 181aae21359Skrgopi (void) di_walk_minor(root, DDI_NT_NET, DI_CHECK_ALIAS, &dw, 1827c478bd9Sstevel@tonic-gate i_dladm_nt_net_walk); 183aae21359Skrgopi 1847c478bd9Sstevel@tonic-gate di_fini(root); 1857c478bd9Sstevel@tonic-gate 186aae21359Skrgopi ddp = dw.dw_dev_list; 187aae21359Skrgopi while (ddp) { 188aae21359Skrgopi fn(arg, ddp->dd_name); 1896e61f8d9Skrgopi (void) dladm_walk_vlan(fn, arg, ddp->dd_name); 190aae21359Skrgopi last_ddp = ddp; 191aae21359Skrgopi ddp = ddp->dd_next; 192aae21359Skrgopi free(last_ddp); 1937c478bd9Sstevel@tonic-gate } 1947c478bd9Sstevel@tonic-gate 195aae21359Skrgopi return (0); 1967c478bd9Sstevel@tonic-gate } 1977c478bd9Sstevel@tonic-gate 1987c478bd9Sstevel@tonic-gate /* 199210db224Sericheng * Invoke the specified callback function for each vlan managed by dld 2007c478bd9Sstevel@tonic-gate */ 2017c478bd9Sstevel@tonic-gate int 202aae21359Skrgopi dladm_walk_vlan(void (*fn)(void *, const char *), void *arg, const char *name) 2037c478bd9Sstevel@tonic-gate { 204aae21359Skrgopi int fd, bufsize, i; 205aae21359Skrgopi int nvlan = 4094; 206210db224Sericheng dld_ioc_vlan_t *iocp = NULL; 207210db224Sericheng dld_vlan_info_t *dvip; 2087c478bd9Sstevel@tonic-gate 209210db224Sericheng if ((fd = open(DLD_CONTROL_DEV, O_RDWR)) < 0) 2107c478bd9Sstevel@tonic-gate return (-1); 2117c478bd9Sstevel@tonic-gate 212aae21359Skrgopi bufsize = sizeof (dld_ioc_vlan_t) + nvlan * sizeof (dld_vlan_info_t); 2137c478bd9Sstevel@tonic-gate 214aae21359Skrgopi if ((iocp = (dld_ioc_vlan_t *)calloc(1, bufsize)) == NULL) 215aae21359Skrgopi return (-1); 2167c478bd9Sstevel@tonic-gate 217ba2e4443Sseb (void) strlcpy((char *)iocp->div_name, name, IFNAMSIZ); 218aae21359Skrgopi if (i_dladm_ioctl(fd, DLDIOCVLAN, iocp, bufsize) == 0) { 219aae21359Skrgopi dvip = (dld_vlan_info_t *)(iocp + 1); 220aae21359Skrgopi for (i = 0; i < iocp->div_count; i++) 221210db224Sericheng (*fn)(arg, dvip[i].dvi_name); 2227c478bd9Sstevel@tonic-gate } 223aae21359Skrgopi /* 224aae21359Skrgopi * Note: Callers of dladm_walk_vlan() ignore the return 225aae21359Skrgopi * value of this routine. So ignoring ioctl failure case 226aae21359Skrgopi * and just returning 0. 227aae21359Skrgopi */ 228210db224Sericheng free(iocp); 2297c478bd9Sstevel@tonic-gate (void) close(fd); 2307c478bd9Sstevel@tonic-gate return (0); 2317c478bd9Sstevel@tonic-gate } 2327c478bd9Sstevel@tonic-gate 2337c478bd9Sstevel@tonic-gate 2347c478bd9Sstevel@tonic-gate /* 2357c478bd9Sstevel@tonic-gate * Returns the current attributes of the specified datalink. 2367c478bd9Sstevel@tonic-gate */ 2377c478bd9Sstevel@tonic-gate int 2387c478bd9Sstevel@tonic-gate dladm_info(const char *name, dladm_attr_t *dap) 2397c478bd9Sstevel@tonic-gate { 2407c478bd9Sstevel@tonic-gate int fd; 2417c478bd9Sstevel@tonic-gate 2427c478bd9Sstevel@tonic-gate if ((fd = open(DLD_CONTROL_DEV, O_RDWR)) < 0) 2437c478bd9Sstevel@tonic-gate return (-1); 2447c478bd9Sstevel@tonic-gate 2457c478bd9Sstevel@tonic-gate if (i_dladm_info(fd, name, dap) < 0) 2467c478bd9Sstevel@tonic-gate goto failed; 2477c478bd9Sstevel@tonic-gate 2487c478bd9Sstevel@tonic-gate (void) close(fd); 2497c478bd9Sstevel@tonic-gate return (0); 2507c478bd9Sstevel@tonic-gate 2517c478bd9Sstevel@tonic-gate failed: 2527c478bd9Sstevel@tonic-gate (void) close(fd); 2537c478bd9Sstevel@tonic-gate return (-1); 2547c478bd9Sstevel@tonic-gate } 2550ba2cbe9Sxc 2560ba2cbe9Sxc const char * 2570ba2cbe9Sxc dladm_status2str(dladm_status_t status, char *buf) 2580ba2cbe9Sxc { 2590ba2cbe9Sxc const char *s; 2600ba2cbe9Sxc 2610ba2cbe9Sxc switch (status) { 2620ba2cbe9Sxc case DLADM_STATUS_OK: 2630ba2cbe9Sxc s = "ok"; 2640ba2cbe9Sxc break; 2650ba2cbe9Sxc case DLADM_STATUS_BADARG: 2660ba2cbe9Sxc s = "invalid argument"; 2670ba2cbe9Sxc break; 2680ba2cbe9Sxc case DLADM_STATUS_FAILED: 2690ba2cbe9Sxc s = "operation failed"; 2700ba2cbe9Sxc break; 2710ba2cbe9Sxc case DLADM_STATUS_TOOSMALL: 2720ba2cbe9Sxc s = "buffer size too small"; 2730ba2cbe9Sxc break; 2740ba2cbe9Sxc case DLADM_STATUS_NOTSUP: 2750ba2cbe9Sxc s = "operation not supported"; 2760ba2cbe9Sxc break; 2770ba2cbe9Sxc case DLADM_STATUS_NOTFOUND: 2780ba2cbe9Sxc s = "object not found"; 2790ba2cbe9Sxc break; 2800ba2cbe9Sxc case DLADM_STATUS_BADVAL: 2810ba2cbe9Sxc s = "invalid value"; 2820ba2cbe9Sxc break; 2830ba2cbe9Sxc case DLADM_STATUS_NOMEM: 2840ba2cbe9Sxc s = "insufficient memory"; 2850ba2cbe9Sxc break; 2860ba2cbe9Sxc case DLADM_STATUS_EXIST: 2870ba2cbe9Sxc s = "object already exists"; 2880ba2cbe9Sxc break; 2890ba2cbe9Sxc case DLADM_STATUS_LINKINVAL: 2900ba2cbe9Sxc s = "invalid link"; 2910ba2cbe9Sxc break; 2920ba2cbe9Sxc case DLADM_STATUS_PROPRDONLY: 2930ba2cbe9Sxc s = "read-only property"; 2940ba2cbe9Sxc break; 2950ba2cbe9Sxc case DLADM_STATUS_BADVALCNT: 2960ba2cbe9Sxc s = "invalid number of values"; 2970ba2cbe9Sxc break; 2980ba2cbe9Sxc case DLADM_STATUS_DBNOTFOUND: 2990ba2cbe9Sxc s = "database not found"; 3000ba2cbe9Sxc break; 3010ba2cbe9Sxc case DLADM_STATUS_DENIED: 3020ba2cbe9Sxc s = "permission denied"; 3030ba2cbe9Sxc break; 3040ba2cbe9Sxc case DLADM_STATUS_IOERR: 3050ba2cbe9Sxc s = "I/O error"; 3060ba2cbe9Sxc break; 3070ba2cbe9Sxc default: 308*33343a97Smeem s = "<unknown error>"; 309*33343a97Smeem break; 3100ba2cbe9Sxc } 311*33343a97Smeem (void) snprintf(buf, DLADM_STRSIZE, "%s", dgettext(TEXT_DOMAIN, s)); 3120ba2cbe9Sxc return (buf); 3130ba2cbe9Sxc } 3140ba2cbe9Sxc 3150ba2cbe9Sxc /* 3160ba2cbe9Sxc * Convert a unix errno to a dladm_status_t. 3170ba2cbe9Sxc * We only convert errnos that are likely to be encountered. All others 3180ba2cbe9Sxc * are mapped to DLADM_STATUS_FAILED. 3190ba2cbe9Sxc */ 3200ba2cbe9Sxc dladm_status_t 3210ba2cbe9Sxc dladm_errno2status(int err) 3220ba2cbe9Sxc { 3230ba2cbe9Sxc switch (err) { 3240ba2cbe9Sxc case EINVAL: 3250ba2cbe9Sxc return (DLADM_STATUS_BADARG); 3260ba2cbe9Sxc case EEXIST: 3270ba2cbe9Sxc return (DLADM_STATUS_EXIST); 3280ba2cbe9Sxc case ENOENT: 3290ba2cbe9Sxc return (DLADM_STATUS_NOTFOUND); 3300ba2cbe9Sxc case ENOSPC: 3310ba2cbe9Sxc return (DLADM_STATUS_TOOSMALL); 3320ba2cbe9Sxc case ENOMEM: 3330ba2cbe9Sxc return (DLADM_STATUS_NOMEM); 3340ba2cbe9Sxc case ENOTSUP: 3350ba2cbe9Sxc return (DLADM_STATUS_NOTSUP); 3360ba2cbe9Sxc case EACCES: 3370ba2cbe9Sxc return (DLADM_STATUS_DENIED); 3380ba2cbe9Sxc case EIO: 3390ba2cbe9Sxc return (DLADM_STATUS_IOERR); 3400ba2cbe9Sxc default: 3410ba2cbe9Sxc return (DLADM_STATUS_FAILED); 3420ba2cbe9Sxc } 3430ba2cbe9Sxc } 3440ba2cbe9Sxc 3450ba2cbe9Sxc /* 3460ba2cbe9Sxc * These are the uid and gid of the user 'dladm'. 3470ba2cbe9Sxc * The directory /etc/dladm and all files under it are owned by this user. 3480ba2cbe9Sxc */ 3490ba2cbe9Sxc #define DLADM_DB_OWNER 15 3500ba2cbe9Sxc #define DLADM_DB_GROUP 3 3510ba2cbe9Sxc #define LOCK_DB_PERMS S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH 3520ba2cbe9Sxc 3530ba2cbe9Sxc static int 3540ba2cbe9Sxc i_dladm_lock_db(const char *lock_file, short type) 3550ba2cbe9Sxc { 3560ba2cbe9Sxc int lock_fd; 3570ba2cbe9Sxc struct flock lock; 3580ba2cbe9Sxc 3590ba2cbe9Sxc if ((lock_fd = open(lock_file, O_RDWR | O_CREAT | O_TRUNC, 3600ba2cbe9Sxc LOCK_DB_PERMS)) < 0) 3610ba2cbe9Sxc return (-1); 3620ba2cbe9Sxc 3630ba2cbe9Sxc lock.l_type = type; 3640ba2cbe9Sxc lock.l_whence = SEEK_SET; 3650ba2cbe9Sxc lock.l_start = 0; 3660ba2cbe9Sxc lock.l_len = 0; 3670ba2cbe9Sxc 3680ba2cbe9Sxc if (fcntl(lock_fd, F_SETLKW, &lock) < 0) { 3690ba2cbe9Sxc int err = errno; 3700ba2cbe9Sxc 3710ba2cbe9Sxc (void) close(lock_fd); 3720ba2cbe9Sxc (void) unlink(lock_file); 3730ba2cbe9Sxc errno = err; 3740ba2cbe9Sxc return (-1); 3750ba2cbe9Sxc } 3760ba2cbe9Sxc return (lock_fd); 3770ba2cbe9Sxc } 3780ba2cbe9Sxc 3790ba2cbe9Sxc static void 3800ba2cbe9Sxc i_dladm_unlock_db(const char *lock_file, int fd) 3810ba2cbe9Sxc { 3820ba2cbe9Sxc struct flock lock; 3830ba2cbe9Sxc 3840ba2cbe9Sxc if (fd < 0) 3850ba2cbe9Sxc return; 3860ba2cbe9Sxc 3870ba2cbe9Sxc lock.l_type = F_UNLCK; 3880ba2cbe9Sxc lock.l_whence = SEEK_SET; 3890ba2cbe9Sxc lock.l_start = 0; 3900ba2cbe9Sxc lock.l_len = 0; 3910ba2cbe9Sxc 3920ba2cbe9Sxc (void) fcntl(fd, F_SETLKW, &lock); 3930ba2cbe9Sxc (void) close(fd); 3940ba2cbe9Sxc (void) unlink(lock_file); 3950ba2cbe9Sxc } 3960ba2cbe9Sxc 3970ba2cbe9Sxc dladm_status_t 3980ba2cbe9Sxc i_dladm_rw_db(const char *db_file, mode_t db_perms, 3990ba2cbe9Sxc dladm_status_t (*process_db)(void *, FILE *, FILE *), 4000ba2cbe9Sxc void *arg, boolean_t writeop) 4010ba2cbe9Sxc { 4020ba2cbe9Sxc dladm_status_t status = DLADM_STATUS_OK; 4030ba2cbe9Sxc FILE *fp, *nfp = NULL; 4040ba2cbe9Sxc char lock[MAXPATHLEN]; 4050ba2cbe9Sxc char file[MAXPATHLEN]; 4060ba2cbe9Sxc char newfile[MAXPATHLEN]; 4070ba2cbe9Sxc char *db_basename; 4080ba2cbe9Sxc int nfd, lock_fd; 4090ba2cbe9Sxc 4100ba2cbe9Sxc /* 4110ba2cbe9Sxc * If we are called from a boot script such as net-physical, 4120ba2cbe9Sxc * it's quite likely that the root fs is still not writable. 4130ba2cbe9Sxc * For this case, it's ok for the lock creation to fail since 4140ba2cbe9Sxc * no one else could be accessing our configuration file. 4150ba2cbe9Sxc */ 4160ba2cbe9Sxc db_basename = strrchr(db_file, '/'); 4170ba2cbe9Sxc if (db_basename == NULL || db_basename[1] == '\0') 4180ba2cbe9Sxc return (dladm_errno2status(EINVAL)); 4190ba2cbe9Sxc db_basename++; 4200ba2cbe9Sxc (void) snprintf(lock, MAXPATHLEN, "/tmp/%s.lock", db_basename); 4210ba2cbe9Sxc if ((lock_fd = i_dladm_lock_db 4220ba2cbe9Sxc (lock, (writeop ? F_WRLCK : F_RDLCK))) < 0 && errno != EROFS) 4230ba2cbe9Sxc return (dladm_errno2status(errno)); 4240ba2cbe9Sxc 4250ba2cbe9Sxc (void) snprintf(file, MAXPATHLEN, "%s/%s", dladm_rootdir, db_file); 4260ba2cbe9Sxc if ((fp = fopen(file, (writeop ? "r+" : "r"))) == NULL) { 4270ba2cbe9Sxc int err = errno; 4280ba2cbe9Sxc 4290ba2cbe9Sxc i_dladm_unlock_db(lock, lock_fd); 4300ba2cbe9Sxc if (err == ENOENT) 4310ba2cbe9Sxc return (DLADM_STATUS_DBNOTFOUND); 4320ba2cbe9Sxc 4330ba2cbe9Sxc return (dladm_errno2status(err)); 4340ba2cbe9Sxc } 4350ba2cbe9Sxc 4360ba2cbe9Sxc if (writeop) { 4370ba2cbe9Sxc (void) snprintf(newfile, MAXPATHLEN, "%s/%s.new", 4380ba2cbe9Sxc dladm_rootdir, db_file); 4390ba2cbe9Sxc if ((nfd = open(newfile, O_WRONLY | O_CREAT | O_TRUNC, 4400ba2cbe9Sxc db_perms)) < 0) { 4410ba2cbe9Sxc (void) fclose(fp); 4420ba2cbe9Sxc i_dladm_unlock_db(lock, lock_fd); 4430ba2cbe9Sxc return (dladm_errno2status(errno)); 4440ba2cbe9Sxc } 4450ba2cbe9Sxc 4460ba2cbe9Sxc if ((nfp = fdopen(nfd, "w")) == NULL) { 4470ba2cbe9Sxc (void) close(nfd); 4480ba2cbe9Sxc (void) fclose(fp); 4490ba2cbe9Sxc (void) unlink(newfile); 4500ba2cbe9Sxc i_dladm_unlock_db(lock, lock_fd); 4510ba2cbe9Sxc return (dladm_errno2status(errno)); 4520ba2cbe9Sxc } 4530ba2cbe9Sxc } 4540ba2cbe9Sxc status = (*process_db)(arg, fp, nfp); 4550ba2cbe9Sxc if (!writeop || status != DLADM_STATUS_OK) 4560ba2cbe9Sxc goto done; 4570ba2cbe9Sxc 4580ba2cbe9Sxc /* 4590ba2cbe9Sxc * Configuration files need to be owned by the 'dladm' user. 4600ba2cbe9Sxc * If we are invoked by root, the file ownership needs to be fixed. 4610ba2cbe9Sxc */ 4620ba2cbe9Sxc if (getuid() == 0 || geteuid() == 0) { 4630ba2cbe9Sxc if (fchown(nfd, DLADM_DB_OWNER, DLADM_DB_GROUP) < 0) { 4640ba2cbe9Sxc status = dladm_errno2status(errno); 4650ba2cbe9Sxc goto done; 4660ba2cbe9Sxc } 4670ba2cbe9Sxc } 4680ba2cbe9Sxc 4690ba2cbe9Sxc if (fflush(nfp) == EOF) { 4700ba2cbe9Sxc status = dladm_errno2status(errno); 4710ba2cbe9Sxc goto done; 4720ba2cbe9Sxc } 4730ba2cbe9Sxc (void) fclose(fp); 4740ba2cbe9Sxc (void) fclose(nfp); 4750ba2cbe9Sxc 4760ba2cbe9Sxc if (rename(newfile, file) < 0) { 4770ba2cbe9Sxc (void) unlink(newfile); 4780ba2cbe9Sxc i_dladm_unlock_db(lock, lock_fd); 4790ba2cbe9Sxc return (dladm_errno2status(errno)); 4800ba2cbe9Sxc } 4810ba2cbe9Sxc 4820ba2cbe9Sxc i_dladm_unlock_db(lock, lock_fd); 4830ba2cbe9Sxc return (DLADM_STATUS_OK); 4840ba2cbe9Sxc 4850ba2cbe9Sxc done: 4860ba2cbe9Sxc if (nfp != NULL) { 4870ba2cbe9Sxc (void) fclose(nfp); 4880ba2cbe9Sxc if (status != DLADM_STATUS_OK) 4890ba2cbe9Sxc (void) unlink(newfile); 4900ba2cbe9Sxc } 4910ba2cbe9Sxc (void) fclose(fp); 4920ba2cbe9Sxc i_dladm_unlock_db(lock, lock_fd); 4930ba2cbe9Sxc return (status); 4940ba2cbe9Sxc } 4950ba2cbe9Sxc 4960ba2cbe9Sxc dladm_status_t 4970ba2cbe9Sxc dladm_set_rootdir(const char *rootdir) 4980ba2cbe9Sxc { 4990ba2cbe9Sxc DIR *dp; 5000ba2cbe9Sxc 5010ba2cbe9Sxc if (rootdir == NULL || *rootdir != '/' || 5020ba2cbe9Sxc (dp = opendir(rootdir)) == NULL) 5030ba2cbe9Sxc return (DLADM_STATUS_BADARG); 5040ba2cbe9Sxc 5050ba2cbe9Sxc (void) strncpy(dladm_rootdir, rootdir, MAXPATHLEN); 5060ba2cbe9Sxc (void) closedir(dp); 5070ba2cbe9Sxc return (DLADM_STATUS_OK); 5080ba2cbe9Sxc } 509