1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * misc.c - miscellaneous and utility functions 29 */ 30 31 #include <sys/stat.h> 32 #include <sys/statvfs.h> 33 #include <sys/types.h> 34 #include <ctype.h> 35 #include <errno.h> 36 #include <fcntl.h> 37 #include <libscf_priv.h> 38 #include <libuutil.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <strings.h> 43 #include <syslog.h> 44 #include <unistd.h> 45 46 #include "startd.h" 47 48 void 49 startd_close(int fd) 50 { 51 if (close(fd) == 0) 52 return; 53 54 log_error(LOG_WARNING, "close(%d) failed: %s\n", fd, strerror(errno)); 55 abort(); 56 } 57 58 void 59 startd_fclose(FILE *fp) 60 { 61 if (fclose(fp) == 0) 62 return; 63 64 log_error(LOG_WARNING, "fclose() failed\n"); 65 abort(); 66 } 67 68 /* 69 * Canonify fmri. On success, sets *retp to a string which should be freed 70 * with startd_free( , max_scf_fmri_size) and returns 0. On failure returns 71 * EINVAL. 72 * 73 * If 'isinstance' is non-zero, then return EINVAL if the FMRI specificies 74 * anything other than an instance. 75 */ 76 int 77 fmri_canonify(const char *fmri, char **retp, boolean_t isinstance) 78 { 79 char *cf; 80 81 cf = startd_alloc(max_scf_fmri_size); 82 83 if (isinstance) { 84 const char *instance, *pg; 85 86 /* 87 * Verify that this fmri specifies an instance, using 88 * scf_parse_svc_fmri(). 89 */ 90 if (strlcpy(cf, fmri, max_scf_fmri_size) >= max_scf_fmri_size || 91 scf_parse_svc_fmri(cf, NULL, NULL, &instance, &pg, 92 NULL) != 0) { 93 startd_free(cf, max_scf_fmri_size); 94 return (EINVAL); 95 } 96 97 if (instance == NULL || pg != NULL) { 98 startd_free(cf, max_scf_fmri_size); 99 return (EINVAL); 100 } 101 } 102 103 if (scf_canonify_fmri(fmri, cf, max_scf_fmri_size) < 0) { 104 startd_free(cf, max_scf_fmri_size); 105 return (EINVAL); 106 } 107 108 *retp = cf; 109 return (0); 110 } 111 112 /* 113 * int fs_is_read_only(char *, ulong_t *) 114 * Returns 1 if the given path is that of a filesystem with the ST_RDONLY flag 115 * set. 0 if ST_RDONLY is unset. -1 if the statvfs(2) call failed. If the 116 * second parameter is non-NULL, the fsid for the requested filesystem is 117 * written to the given address on success. 118 */ 119 int 120 fs_is_read_only(char *path, ulong_t *fsidp) 121 { 122 int err; 123 struct statvfs sfb; 124 125 do { 126 err = statvfs(path, &sfb); 127 } while (err == -1 && errno == EINTR); 128 129 if (err) 130 return (-1); 131 132 if (fsidp != NULL) 133 *fsidp = sfb.f_fsid; 134 135 if (sfb.f_flag & ST_RDONLY) 136 return (1); 137 138 return (0); 139 } 140 141 /* 142 * int fs_remount(char *) 143 * Attempt to remount the given filesystem read-write, so that we can unlock 144 * the repository (or handle other similar failures). 145 * 146 * Returns 0 on success, -1 on failure. 147 */ 148 int 149 fs_remount(char *path) 150 { 151 if (fork_mount(path, "remount,rw")) 152 return (-1); 153 154 return (0); 155 } 156 157 /* 158 * void xstr_sanitize(char *s) 159 * In-place transform any non-alphanumeric characters (or '_') to '_' 160 * characters. 161 */ 162 void 163 xstr_sanitize(char *s) 164 { 165 for (; *s != '\0'; s++) 166 if (!isalnum(*s) && *s != '_') 167 *s = '_'; 168 } 169