/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "%Z%%M% %I% %E% SMI" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct hwc_class *hcl_head; /* head of list of classes */ static kmutex_t hcl_lock; /* for accessing list of classes */ #define DAFILE "/etc/driver_aliases" #define CLASSFILE "/etc/driver_classes" #define DACFFILE "/etc/dacf.conf" static char class_file[] = CLASSFILE; static char dafile[] = DAFILE; static char dacffile[] = DACFFILE; char *systemfile = "etc/system"; /* name of ascii system file */ static struct sysparam *sysparam_hd; /* head of parameters list */ static struct sysparam *sysparam_tl; /* tail of parameters list */ static vmem_t *mod_sysfile_arena; /* parser memory */ char obp_bootpath[BO_MAXOBJNAME]; /* bootpath from obp */ char svm_bootpath[BO_MAXOBJNAME]; /* bootpath redirected via rootdev */ char zfs_bootpath[BO_MAXOBJNAME]; /* zfs bootpath, set via zfsroot */ #if defined(_PSM_MODULES) struct psm_mach { struct psm_mach *m_next; char *m_machname; }; static struct psm_mach *pmach_head; /* head of list of classes */ #define MACHFILE "/etc/mach" static char mach_file[] = MACHFILE; #endif /* _PSM_MODULES */ #if defined(_RTC_CONFIG) static char rtc_config_file[] = "/etc/rtc_config"; #endif static void sys_set_var(int, struct sysparam *, void *); static void setparams(void); /* * driver.conf parse thread control structure */ struct hwc_parse_mt { ksema_t sema; char *name; /* name of .conf files */ struct par_list **pl; /* parsed parent list */ ddi_prop_t **props; /* parsed properties */ int rv; /* return value */ }; static int hwc_parse_now(char *, struct par_list **, ddi_prop_t **); static void hwc_parse_thread(struct hwc_parse_mt *); static struct hwc_parse_mt *hwc_parse_mtalloc(char *, struct par_list **, ddi_prop_t **); static void hwc_parse_mtfree(struct hwc_parse_mt *); static void add_spec(struct hwc_spec *, struct par_list **); static void add_props(struct hwc_spec *, ddi_prop_t **); static void check_system_file(void); static int sysparam_compare_entry(struct sysparam *, struct sysparam *); static char *sysparam_type_to_str(int); static void sysparam_count_entry(struct sysparam *, int *, u_longlong_t *); static void sysparam_print_warning(struct sysparam *, u_longlong_t); #ifdef DEBUG static int parse_debug_on = 0; /*VARARGS1*/ static void parse_debug(struct _buf *file, char *fmt, ...) { va_list adx; if (parse_debug_on) { va_start(adx, fmt); vprintf(fmt, adx); if (file) printf(" on line %d of %s\n", kobj_linenum(file), kobj_filename(file)); va_end(adx); } } #endif /* DEBUG */ #define FE_BUFLEN 256 /*PRINTFLIKE3*/ void kobj_file_err(int type, struct _buf *file, char *fmt, ...) { va_list ap; /* * If we're in trouble, we might be short on stack... be paranoid */ char *buf = kmem_alloc(FE_BUFLEN, KM_SLEEP); char *trailer = kmem_alloc(FE_BUFLEN, KM_SLEEP); char *fmt_str = kmem_alloc(FE_BUFLEN, KM_SLEEP); char prefix = '\0'; va_start(ap, fmt); if (strchr("^!?", fmt[0]) != NULL) { prefix = fmt[0]; fmt++; } (void) vsnprintf(buf, FE_BUFLEN, fmt, ap); va_end(ap); (void) snprintf(trailer, FE_BUFLEN, " on line %d of %s", kobj_linenum(file), kobj_filename(file)); /* * If prefixed with !^?, prepend that character */ if (prefix != '\0') { (void) snprintf(fmt_str, FE_BUFLEN, "%c%%s%%s", prefix); } else { (void) strncpy(fmt_str, "%s%s", FE_BUFLEN); } cmn_err(type, fmt_str, buf, trailer); kmem_free(buf, FE_BUFLEN); kmem_free(trailer, FE_BUFLEN); kmem_free(fmt_str, FE_BUFLEN); } #ifdef DEBUG char *tokennames[] = { "UNEXPECTED", "EQUALS", "AMPERSAND", "BIT_OR", "STAR", "POUND", "COLON", "SEMICOLON", "COMMA", "SLASH", "WHITE_SPACE", "NEWLINE", "EOF", "STRING", "HEXVAL", "DECVAL", "NAME" }; #endif /* DEBUG */ token_t kobj_lex(struct _buf *file, char *val, size_t size) { char *cp; int ch, oval, badquote; size_t remain; token_t token = UNEXPECTED; if (size < 2) return (token); /* this token is UNEXPECTED */ cp = val; while ((ch = kobj_getc(file)) == ' ' || ch == '\t') ; remain = size - 1; *cp++ = (char)ch; switch (ch) { case '=': token = EQUALS; break; case '&': token = AMPERSAND; break; case '|': token = BIT_OR; break; case '*': token = STAR; break; case '#': token = POUND; break; case ':': token = COLON; break; case ';': token = SEMICOLON; break; case ',': token = COMMA; break; case '/': token = SLASH; break; case ' ': case '\t': case '\f': while ((ch = kobj_getc(file)) == ' ' || ch == '\t' || ch == '\f') { if (--remain == 0) { token = UNEXPECTED; goto out; } *cp++ = (char)ch; } (void) kobj_ungetc(file); token = WHITE_SPACE; break; case '\n': case '\r': token = NEWLINE; break; case '"': remain++; cp--; badquote = 0; while (!badquote && (ch = kobj_getc(file)) != '"') { switch (ch) { case '\n': case -1: kobj_file_err(CE_WARN, file, "Missing \""); remain = size - 1; cp = val; *cp++ = '\n'; badquote = 1; /* since we consumed the newline/EOF */ (void) kobj_ungetc(file); break; case '\\': if (--remain == 0) { token = UNEXPECTED; goto out; } ch = (char)kobj_getc(file); if (!isdigit(ch)) { /* escape the character */ *cp++ = (char)ch; break; } oval = 0; while (ch >= '0' && ch <= '7') { ch -= '0'; oval = (oval << 3) + ch; ch = (char)kobj_getc(file); } (void) kobj_ungetc(file); /* check for character overflow? */ if (oval > 127) { cmn_err(CE_WARN, "Character " "overflow detected."); } *cp++ = (char)oval; break; default: if (--remain == 0) { token = UNEXPECTED; goto out; } *cp++ = (char)ch; break; } } token = STRING; break; case -1: token = EOF; break; default: /* * detect a lone '-' (including at the end of a line), and * identify it as a 'name' */ if (ch == '-') { if (--remain == 0) { token = UNEXPECTED; goto out; } *cp++ = (char)(ch = kobj_getc(file)); if (iswhite(ch) || (ch == '\n')) { (void) kobj_ungetc(file); remain++; cp--; token = NAME; break; } } else if (isunary(ch)) { if (--remain == 0) { token = UNEXPECTED; goto out; } *cp++ = (char)(ch = kobj_getc(file)); } if (isdigit(ch)) { if (ch == '0') { if ((ch = kobj_getc(file)) == 'x') { if (--remain == 0) { token = UNEXPECTED; goto out; } *cp++ = (char)ch; ch = kobj_getc(file); while (isxdigit(ch)) { if (--remain == 0) { token = UNEXPECTED; goto out; } *cp++ = (char)ch; ch = kobj_getc(file); } (void) kobj_ungetc(file); token = HEXVAL; } else { goto digit; } } else { ch = kobj_getc(file); digit: while (isdigit(ch)) { if (--remain == 0) { token = UNEXPECTED; goto out; } *cp++ = (char)ch; ch = kobj_getc(file); } (void) kobj_ungetc(file); token = DECVAL; } } else if (isalpha(ch) || ch == '\\' || ch == '_') { if (ch != '\\') { ch = kobj_getc(file); } else { /* * if the character was a backslash, * back up so we can overwrite it with * the next (i.e. escaped) character. */ remain++; cp--; } while (isnamechar(ch) || ch == '\\') { if (ch == '\\') ch = kobj_getc(file); if (--remain == 0) { token = UNEXPECTED; goto out; } *cp++ = (char)ch; ch = kobj_getc(file); } (void) kobj_ungetc(file); token = NAME; } else { token = UNEXPECTED; } break; } out: *cp = '\0'; #ifdef DEBUG /* * The UNEXPECTED token is the first element of the tokennames array, * but its token value is -1. Adjust the value by adding one to it * to change it to an index of the array. */ parse_debug(NULL, "kobj_lex: token %s value '%s'\n", tokennames[token+1], val); #endif return (token); } /* * Leave NEWLINE as the next character. */ void kobj_find_eol(struct _buf *file) { int ch; while ((ch = kobj_getc(file)) != -1) { if (isnewline(ch)) { (void) kobj_ungetc(file); break; } } } /* * The ascii system file is read and processed. * * The syntax of commands is as follows: * * '*' in column 1 is a comment line. * : * * command is EXCLUDE, INCLUDE, FORCELOAD, ROOTDEV, ROOTFS, * SWAPDEV, SWAPFS, MODDIR, SET * * value is an ascii string meaningful for the command. */ /* * Table of commands */ static struct modcmd modcmd[] = { { "EXCLUDE", MOD_EXCLUDE }, { "exclude", MOD_EXCLUDE }, { "INCLUDE", MOD_INCLUDE }, { "include", MOD_INCLUDE }, { "FORCELOAD", MOD_FORCELOAD }, { "forceload", MOD_FORCELOAD }, { "ROOTDEV", MOD_ROOTDEV }, { "rootdev", MOD_ROOTDEV }, { "ROOTFS", MOD_ROOTFS }, { "rootfs", MOD_ROOTFS }, { "SWAPDEV", MOD_SWAPDEV }, { "swapdev", MOD_SWAPDEV }, { "SWAPFS", MOD_SWAPFS }, { "swapfs", MOD_SWAPFS }, { "MODDIR", MOD_MODDIR }, { "moddir", MOD_MODDIR }, { "SET", MOD_SET }, { "set", MOD_SET }, { "SET32", MOD_SET32 }, { "set32", MOD_SET32 }, { "SET64", MOD_SET64 }, { "set64", MOD_SET64 }, { "ZFSROOT", MOD_ZFSROOT }, { "zfsroot", MOD_ZFSROOT }, { NULL, MOD_UNKNOWN } }; static char bad_op[] = "illegal operator '%s' used on a string"; static char colon_err[] = "A colon (:) must follow the '%s' command"; static char tok_err[] = "Unexpected token '%s'"; static char extra_err[] = "extraneous input ignored starting at '%s'"; static char oversize_err[] = "value too long"; static struct sysparam * do_sysfile_cmd(struct _buf *file, const char *cmd) { struct sysparam *sysp; struct modcmd *mcp; token_t token, op; char *cp; int ch; char tok1[MOD_MAXPATH + 1]; /* used to read the path set by 'moddir' */ char tok2[64]; for (mcp = modcmd; mcp->mc_cmdname != NULL; mcp++) { if (strcmp(mcp->mc_cmdname, cmd) == 0) break; } sysp = vmem_alloc(mod_sysfile_arena, sizeof (struct sysparam), VM_SLEEP); bzero(sysp, sizeof (struct sysparam)); sysp->sys_op = SETOP_NONE; /* set op to noop initially */ switch (sysp->sys_type = mcp->mc_type) { case MOD_INCLUDE: case MOD_EXCLUDE: case MOD_FORCELOAD: /* * Are followed by colon. */ case MOD_ROOTFS: case MOD_SWAPFS: case MOD_ZFSROOT: if ((token = kobj_lex(file, tok1, sizeof (tok1))) == COLON) { token = kobj_lex(file, tok1, sizeof (tok1)); } else { kobj_file_err(CE_WARN, file, colon_err, cmd); } if (token != NAME) { kobj_file_err(CE_WARN, file, "value expected"); goto bad; } cp = tok1 + strlen(tok1); while ((ch = kobj_getc(file)) != -1 && !iswhite(ch) && !isnewline(ch)) { if (cp - tok1 >= sizeof (tok1) - 1) { kobj_file_err(CE_WARN, file, oversize_err); goto bad; } *cp++ = (char)ch; } *cp = '\0'; if (ch != -1) (void) kobj_ungetc(file); if (sysp->sys_type == MOD_INCLUDE) return (NULL); sysp->sys_ptr = vmem_alloc(mod_sysfile_arena, strlen(tok1) + 1, VM_SLEEP); (void) strcpy(sysp->sys_ptr, tok1); break; case MOD_SET: case MOD_SET64: case MOD_SET32: { char *var; token_t tok3; if (kobj_lex(file, tok1, sizeof (tok1)) != NAME) { kobj_file_err(CE_WARN, file, "value expected"); goto bad; } /* * If the next token is a colon (:), * we have the : construct. */ if ((token = kobj_lex(file, tok2, sizeof (tok2))) == COLON) { if ((token = kobj_lex(file, tok2, sizeof (tok2))) == NAME) { var = tok2; /* * Save the module name. */ sysp->sys_modnam = vmem_alloc(mod_sysfile_arena, strlen(tok1) + 1, VM_SLEEP); (void) strcpy(sysp->sys_modnam, tok1); op = kobj_lex(file, tok1, sizeof (tok1)); } else { kobj_file_err(CE_WARN, file, "value expected"); goto bad; } } else { /* otherwise, it was the op */ var = tok1; op = token; } /* * kernel param - place variable name in sys_ptr. */ sysp->sys_ptr = vmem_alloc(mod_sysfile_arena, strlen(var) + 1, VM_SLEEP); (void) strcpy(sysp->sys_ptr, var); /* set operation */ switch (op) { case EQUALS: /* simple assignment */ sysp->sys_op = SETOP_ASSIGN; break; case AMPERSAND: /* bitwise AND */ sysp->sys_op = SETOP_AND; break; case BIT_OR: /* bitwise OR */ sysp->sys_op = SETOP_OR; break; default: /* unsupported operation */ kobj_file_err(CE_WARN, file, "unsupported operator %s", tok2); goto bad; } switch ((tok3 = kobj_lex(file, tok1, sizeof (tok1)))) { case STRING: /* string variable */ if (sysp->sys_op != SETOP_ASSIGN) { kobj_file_err(CE_WARN, file, bad_op, tok1); goto bad; } if (kobj_get_string(&sysp->sys_info, tok1) == 0) { kobj_file_err(CE_WARN, file, "string garbled"); goto bad; } /* * Set SYSPARAM_STR_TOKEN in sys_flags to notify * sysparam_print_warning() that this is a string * token. */ sysp->sys_flags |= SYSPARAM_STR_TOKEN; break; case HEXVAL: case DECVAL: if (kobj_getvalue(tok1, &sysp->sys_info) == -1) { kobj_file_err(CE_WARN, file, "invalid number '%s'", tok1); goto bad; } /* * Set the appropriate flag (hexadecimal or decimal) * in sys_flags for sysparam_print_warning() to be * able to print the number with the correct format. */ if (tok3 == HEXVAL) { sysp->sys_flags |= SYSPARAM_HEX_TOKEN; } else { sysp->sys_flags |= SYSPARAM_DEC_TOKEN; } break; default: kobj_file_err(CE_WARN, file, "bad rvalue '%s'", tok1); goto bad; } /* end switch */ /* * Now that we've parsed it to check the syntax, consider * discarding it (because it -doesn't- apply to this flavor * of the kernel) */ #ifdef _LP64 if (sysp->sys_type == MOD_SET32) return (NULL); #else if (sysp->sys_type == MOD_SET64) return (NULL); #endif sysp->sys_type = MOD_SET; break; } case MOD_MODDIR: if ((token = kobj_lex(file, tok1, sizeof (tok1))) != COLON) { kobj_file_err(CE_WARN, file, colon_err, cmd); goto bad; } cp = tok1; while ((token = kobj_lex(file, cp, sizeof (tok1) - (cp - tok1))) != NEWLINE && token != EOF) { if (token == -1) { kobj_file_err(CE_WARN, file, oversize_err); goto bad; } cp += strlen(cp); while ((ch = kobj_getc(file)) != -1 && !iswhite(ch) && !isnewline(ch) && ch != ':') { if (cp - tok1 >= sizeof (tok1) - 1) { kobj_file_err(CE_WARN, file, oversize_err); goto bad; } *cp++ = (char)ch; } *cp = ':'; if (isnewline(ch)) (void) kobj_ungetc(file); } (void) kobj_ungetc(file); *cp = '\0'; sysp->sys_ptr = vmem_alloc(mod_sysfile_arena, strlen(tok1) + 1, VM_SLEEP); (void) strcpy(sysp->sys_ptr, tok1); break; case MOD_SWAPDEV: case MOD_ROOTDEV: if ((token = kobj_lex(file, tok1, sizeof (tok1))) != COLON) { kobj_file_err(CE_WARN, file, colon_err, cmd); goto bad; } while ((ch = kobj_getc(file)) == ' ' || ch == '\t') ; cp = tok1; while (!iswhite(ch) && !isnewline(ch) && ch != -1) { if (cp - tok1 >= sizeof (tok1) - 1) { kobj_file_err(CE_WARN, file, oversize_err); goto bad; } *cp++ = (char)ch; ch = kobj_getc(file); } if (ch != -1) (void) kobj_ungetc(file); *cp = '\0'; sysp->sys_ptr = vmem_alloc(mod_sysfile_arena, strlen(tok1) + 1, VM_SLEEP); (void) strcpy(sysp->sys_ptr, tok1); break; case MOD_UNKNOWN: default: kobj_file_err(CE_WARN, file, "unknown command '%s'", cmd); goto bad; } return (sysp); bad: kobj_find_eol(file); return (NULL); } void mod_read_system_file(int ask) { register struct sysparam *sp; register struct _buf *file; register token_t token, last_tok; char tokval[MAXLINESIZE]; mod_sysfile_arena = vmem_create("mod_sysfile", NULL, 0, 8, segkmem_alloc, segkmem_free, heap_arena, 0, VM_SLEEP); if (ask) mod_askparams(); if (systemfile != NULL) { if ((file = kobj_open_file(systemfile)) == (struct _buf *)-1) { cmn_err(CE_WARN, "cannot open system file: %s", systemfile); } else { sysparam_tl = (struct sysparam *)&sysparam_hd; last_tok = NEWLINE; while ((token = kobj_lex(file, tokval, sizeof (tokval))) != EOF) { switch (token) { case STAR: case POUND: /* * Skip comments. */ kobj_find_eol(file); break; case NEWLINE: kobj_newline(file); last_tok = NEWLINE; break; case NAME: if (last_tok != NEWLINE) { kobj_file_err(CE_WARN, file, extra_err, tokval); kobj_find_eol(file); } else if ((sp = do_sysfile_cmd(file, tokval)) != NULL) { sp->sys_next = NULL; sysparam_tl->sys_next = sp; sysparam_tl = sp; } last_tok = NAME; break; default: kobj_file_err(CE_WARN, file, tok_err, tokval); kobj_find_eol(file); break; } } kobj_close_file(file); } } /* * Sanity check of /etc/system. */ check_system_file(); param_preset(); (void) mod_sysctl(SYS_SET_KVAR, NULL); if (ask == 0) setparams(); } /* * Search for a specific module variable assignment in /etc/system. If * successful, 1 is returned and the value is stored in '*value'. * Otherwise 0 is returned and '*value' isn't modified. If 'module' is * NULL we look for global definitions. * * This is useful if the value of an assignment is needed before a * module is loaded (e.g. to obtain a default privileged rctl limit). */ int mod_sysvar(const char *module, const char *name, u_longlong_t *value) { struct sysparam *sysp; int cnt = 0; /* dummy */ ASSERT(name != NULL); ASSERT(value != NULL); for (sysp = sysparam_hd; sysp != NULL; sysp = sysp->sys_next) { if ((sysp->sys_type == MOD_SET) && (((module == NULL) && (sysp->sys_modnam == NULL)) || ((module != NULL) && (sysp->sys_modnam != NULL) && (strcmp(module, sysp->sys_modnam) == 0)))) { ASSERT(sysp->sys_ptr != NULL); if (strcmp(name, sysp->sys_ptr) == 0) { sysparam_count_entry(sysp, &cnt, value); if ((sysp->sys_flags & SYSPARAM_TERM) != 0) return (1); continue; } } } ASSERT(cnt == 0); return (0); } /* * This function scans sysparam records, which are created from the * contents of /etc/system, for entries which are logical duplicates, * and prints warning messages as appropriate. When multiple "set" * commands are encountered, the pileup of values with "&", "|" * and "=" operators results in the final value. */ static void check_system_file(void) { struct sysparam *sysp; for (sysp = sysparam_hd; sysp != NULL; sysp = sysp->sys_next) { struct sysparam *entry, *final; u_longlong_t value = 0; int cnt = 1; /* * If the entry is already checked, skip it. */ if ((sysp->sys_flags & SYSPARAM_DUP) != 0) continue; /* * Check if there is a duplicate entry by doing a linear * search. */ final = sysp; for (entry = sysp->sys_next; entry != NULL; entry = entry->sys_next) { /* * Check the entry. if it's different, skip this. */ if (sysparam_compare_entry(sysp, entry) != 0) continue; /* * Count the entry and put the mark. */ sysparam_count_entry(entry, &cnt, &value); entry->sys_flags |= SYSPARAM_DUP; final = entry; } final->sys_flags |= SYSPARAM_TERM; /* * Print the warning if it's duplicated. */ if (cnt >= 2) sysparam_print_warning(final, value); } } /* * Compare the sysparam records. * Return 0 if they are the same, return 1 if not. */ static int sysparam_compare_entry(struct sysparam *sysp, struct sysparam *entry) { ASSERT(sysp->sys_ptr != NULL && entry->sys_ptr != NULL); /* * If the command is rootdev, rootfs, swapdev, swapfs or moddir, * the record with the same type is treated as a duplicate record. * In other cases, the record is treated as a duplicate record when * its type, its module name (if it exists), and its variable name * are the same. */ switch (sysp->sys_type) { case MOD_ROOTDEV: case MOD_ROOTFS: case MOD_SWAPDEV: case MOD_SWAPFS: case MOD_MODDIR: return (sysp->sys_type == entry->sys_type ? 0 : 1); default: /* In other cases, just go through it. */ break; } if (sysp->sys_type != entry->sys_type) return (1); if (sysp->sys_modnam != NULL && entry->sys_modnam == NULL) return (1); if (sysp->sys_modnam == NULL && entry->sys_modnam != NULL) return (1); if (sysp->sys_modnam != NULL && entry->sys_modnam != NULL && strcmp(sysp->sys_modnam, entry->sys_modnam) != 0) return (1); return (strcmp(sysp->sys_ptr, entry->sys_ptr)); } /* * Translate a sysparam type value to a string. */ static char * sysparam_type_to_str(int type) { struct modcmd *mcp; for (mcp = modcmd; mcp->mc_cmdname != NULL; mcp++) { if (mcp->mc_type == type) break; } ASSERT(mcp->mc_type == type); if (type != MOD_UNKNOWN) return ((++mcp)->mc_cmdname); /* lower case */ else return (""); /* MOD_UNKNOWN */ } /* * Check the entry and accumulate the number of entries. */ static void sysparam_count_entry(struct sysparam *sysp, int *cnt, u_longlong_t *value) { u_longlong_t ul = sysp->sys_info; switch (sysp->sys_op) { case SETOP_ASSIGN: *value = ul; (*cnt)++; return; case SETOP_AND: *value &= ul; return; case SETOP_OR: *value |= ul; return; default: /* Not MOD_SET */ (*cnt)++; return; } } /* * Print out the warning if multiple entries are found in the system file. */ static void sysparam_print_warning(struct sysparam *sysp, u_longlong_t value) { char *modnam = sysp->sys_modnam; char *varnam = sysp->sys_ptr; int type = sysp->sys_type; char *typenam = sysparam_type_to_str(type); boolean_t str_token = ((sysp->sys_flags & SYSPARAM_STR_TOKEN) != 0); boolean_t hex_number = ((sysp->sys_flags & SYSPARAM_HEX_TOKEN) != 0); #define warn_format1 " is set more than once in /%s. " #define warn_format2 " applied as the current setting.\n" ASSERT(varnam != NULL); if (type == MOD_SET) { /* * If a string token is set, print out the string * instead of its pointer value. In other cases, * print out the value with the appropriate format * for a hexadecimal number or a decimal number. */ if (modnam == NULL) { if (str_token == B_TRUE) { cmn_err(CE_WARN, "%s" warn_format1 "\"%s %s = %s\"" warn_format2, varnam, systemfile, typenam, varnam, (char *)(uintptr_t)value); } else if (hex_number == B_TRUE) { cmn_err(CE_WARN, "%s" warn_format1 "\"%s %s = 0x%llx\"" warn_format2, varnam, systemfile, typenam, varnam, value); } else { cmn_err(CE_WARN, "%s" warn_format1 "\"%s %s = %lld\"" warn_format2, varnam, systemfile, typenam, varnam, value); } } else { if (str_token == B_TRUE) { cmn_err(CE_WARN, "%s:%s" warn_format1 "\"%s %s:%s = %s\"" warn_format2, modnam, varnam, systemfile, typenam, modnam, varnam, (char *)(uintptr_t)value); } else if (hex_number == B_TRUE) { cmn_err(CE_WARN, "%s:%s" warn_format1 "\"%s %s:%s = 0x%llx\"" warn_format2, modnam, varnam, systemfile, typenam, modnam, varnam, value); } else { cmn_err(CE_WARN, "%s:%s" warn_format1 "\"%s %s:%s = %lld\"" warn_format2, modnam, varnam, systemfile, typenam, modnam, varnam, value); } } } else { /* * If the type is MOD_ROOTDEV, MOD_ROOTFS, MOD_SWAPDEV, * MOD_SWAPFS or MOD_MODDIR, the entry is treated as * a duplicate one if it has the same type regardless * of its variable name. */ switch (type) { case MOD_ROOTDEV: case MOD_ROOTFS: case MOD_SWAPDEV: case MOD_SWAPFS: case MOD_MODDIR: cmn_err(CE_WARN, "\"%s\" appears more than once " "in /%s.", typenam, systemfile); break; default: cmn_err(CE_NOTE, "\"%s: %s\" appears more than once " "in /%s.", typenam, varnam, systemfile); break; } } } /* * Process the system file commands. */ int mod_sysctl(int fcn, void *p) { static char wmesg[] = "forceload of %s failed"; struct sysparam *sysp; char *name; struct modctl *modp; if (sysparam_hd == NULL) return (0); for (sysp = sysparam_hd; sysp != NULL; sysp = sysp->sys_next) { switch (fcn) { case SYS_FORCELOAD: if (sysp->sys_type == MOD_FORCELOAD) { name = sysp->sys_ptr; if (modload(NULL, name) == -1) cmn_err(CE_WARN, wmesg, name); /* * The following works because it * runs before autounloading is started!! */ modp = mod_find_by_filename(NULL, name); if (modp != NULL) modp->mod_loadflags |= MOD_NOAUTOUNLOAD; /* * For drivers, attempt to install it. */ if (strncmp(sysp->sys_ptr, "drv", 3) == 0) { (void) ddi_install_driver(name + 4); } } break; case SYS_SET_KVAR: case SYS_SET_MVAR: if (sysp->sys_type == MOD_SET) sys_set_var(fcn, sysp, p); break; case SYS_CHECK_EXCLUDE: if (sysp->sys_type == MOD_EXCLUDE) { if (p == NULL || sysp->sys_ptr == NULL) return (0); if (strcmp((char *)p, sysp->sys_ptr) == 0) return (1); } } } param_check(); return (0); } /* * Process the system file commands, by type. */ int mod_sysctl_type(int type, int (*func)(struct sysparam *, void *), void *p) { struct sysparam *sysp; int err; for (sysp = sysparam_hd; sysp != NULL; sysp = sysp->sys_next) if (sysp->sys_type == type) if (err = (*(func))(sysp, p)) return (err); return (0); } static char seterr[] = "Symbol %s has size of 0 in symbol table. %s"; static char assumption[] = "Assuming it is an 'int'"; static char defmsg[] = "Trying to set a variable that is of size %d"; static void set_int8_var(uintptr_t, struct sysparam *); static void set_int16_var(uintptr_t, struct sysparam *); static void set_int32_var(uintptr_t, struct sysparam *); static void set_int64_var(uintptr_t, struct sysparam *); static void sys_set_var(int fcn, struct sysparam *sysp, void *p) { uintptr_t symaddr; int size; if (fcn == SYS_SET_KVAR && sysp->sys_modnam == NULL) { symaddr = kobj_getelfsym(sysp->sys_ptr, NULL, &size); } else if (fcn == SYS_SET_MVAR) { if (sysp->sys_modnam == (char *)NULL || strcmp(((struct modctl *)p)->mod_modname, sysp->sys_modnam) != 0) return; symaddr = kobj_getelfsym(sysp->sys_ptr, ((struct modctl *)p)->mod_mp, &size); } else return; if (symaddr != NULL) { switch (size) { case 1: set_int8_var(symaddr, sysp); break; case 2: set_int16_var(symaddr, sysp); break; case 0: cmn_err(CE_WARN, seterr, sysp->sys_ptr, assumption); /*FALLTHROUGH*/ case 4: set_int32_var(symaddr, sysp); break; case 8: set_int64_var(symaddr, sysp); break; default: cmn_err(CE_WARN, defmsg, size); break; } } else { printf("sorry, variable '%s' is not defined in the '%s' ", sysp->sys_ptr, sysp->sys_modnam ? sysp->sys_modnam : "kernel"); if (sysp->sys_modnam) printf("module"); printf("\n"); } } static void set_int8_var(uintptr_t symaddr, struct sysparam *sysp) { uint8_t uc = (uint8_t)sysp->sys_info; if (moddebug & MODDEBUG_LOADMSG) printf("OP: %x: param '%s' was '0x%" PRIx8 "' in module: '%s'.\n", sysp->sys_op, sysp->sys_ptr, *(uint8_t *)symaddr, sysp->sys_modnam); switch (sysp->sys_op) { case SETOP_ASSIGN: *(uint8_t *)symaddr = uc; break; case SETOP_AND: *(uint8_t *)symaddr &= uc; break; case SETOP_OR: *(uint8_t *)symaddr |= uc; break; } if (moddebug & MODDEBUG_LOADMSG) printf("now it is set to '0x%" PRIx8 "'.\n", *(uint8_t *)symaddr); } static void set_int16_var(uintptr_t symaddr, struct sysparam *sysp) { uint16_t us = (uint16_t)sysp->sys_info; if (moddebug & MODDEBUG_LOADMSG) printf("OP: %x: param '%s' was '0x%" PRIx16 "' in module: '%s'.\n", sysp->sys_op, sysp->sys_ptr, *(uint16_t *)symaddr, sysp->sys_modnam); switch (sysp->sys_op) { case SETOP_ASSIGN: *(uint16_t *)symaddr = us; break; case SETOP_AND: *(uint16_t *)symaddr &= us; break; case SETOP_OR: *(uint16_t *)symaddr |= us; break; } if (moddebug & MODDEBUG_LOADMSG) printf("now it is set to '0x%" PRIx16 "'.\n", *(uint16_t *)symaddr); } static void set_int32_var(uintptr_t symaddr, struct sysparam *sysp) { uint32_t ui = (uint32_t)sysp->sys_info; if (moddebug & MODDEBUG_LOADMSG) printf("OP: %x: param '%s' was '0x%" PRIx32 "' in module: '%s'.\n", sysp->sys_op, sysp->sys_ptr, *(uint32_t *)symaddr, sysp->sys_modnam); switch (sysp->sys_op) { case SETOP_ASSIGN: *(uint32_t *)symaddr = ui; break; case SETOP_AND: *(uint32_t *)symaddr &= ui; break; case SETOP_OR: *(uint32_t *)symaddr |= ui; break; } if (moddebug & MODDEBUG_LOADMSG) printf("now it is set to '0x%" PRIx32 "'.\n", *(uint32_t *)symaddr); } static void set_int64_var(uintptr_t symaddr, struct sysparam *sysp) { uint64_t ul = sysp->sys_info; if (moddebug & MODDEBUG_LOADMSG) printf("OP: %x: param '%s' was '0x%" PRIx64 "' in module: '%s'.\n", sysp->sys_op, sysp->sys_ptr, *(uint64_t *)symaddr, sysp->sys_modnam); switch (sysp->sys_op) { case SETOP_ASSIGN: *(uint64_t *)symaddr = ul; break; case SETOP_AND: *(uint64_t *)symaddr &= ul; break; case SETOP_OR: *(uint64_t *)symaddr |= ul; break; } if (moddebug & MODDEBUG_LOADMSG) printf("now it is set to '0x%" PRIx64 "'.\n", *(uint64_t *)symaddr); } /* * The next item on the line is a string value. Allocate memory for * it and copy the string. Return 1, and set arg ptr to newly allocated * and initialized buffer, or NULL if an error occurs. */ int kobj_get_string(u_longlong_t *llptr, char *tchar) { char *cp; char *start = (char *)0; int len = 0; len = strlen(tchar); start = tchar; /* copy string */ cp = vmem_alloc(mod_sysfile_arena, len + 1, VM_SLEEP); bzero(cp, len + 1); *llptr = (u_longlong_t)(uintptr_t)cp; for (; len > 0; len--) { /* convert some common escape sequences */ if (*start == '\\') { switch (*(start + 1)) { case 't': /* tab */ *cp++ = '\t'; len--; start += 2; break; case 'n': /* new line */ *cp++ = '\n'; len--; start += 2; break; case 'b': /* back space */ *cp++ = '\b'; len--; start += 2; break; default: /* simply copy it */ *cp++ = *start++; break; } } else *cp++ = *start++; } *cp = '\0'; return (1); } /* * this function frees the memory allocated by kobj_get_string */ void kobj_free_string(void *ptr, int len) { vmem_free(mod_sysfile_arena, ptr, len); } /* * get a decimal octal or hex number. Handle '~' for one's complement. */ int kobj_getvalue(const char *token, u_longlong_t *valuep) { int radix; u_longlong_t retval = 0; int onescompl = 0; int negate = 0; char c; if (*token == '~') { onescompl++; /* perform one's complement on result */ token++; } else if (*token == '-') { negate++; token++; } if (*token == '0') { token++; c = *token; if (c == '\0') { *valuep = 0; /* value is 0 */ return (0); } if (c == 'x' || c == 'X') { radix = 16; token++; } else radix = 8; } else radix = 10; while ((c = *token++)) { switch (radix) { case 8: if (c >= '0' && c <= '7') c -= '0'; else return (-1); /* invalid number */ retval = (retval << 3) + c; break; case 10: if (c >= '0' && c <= '9') c -= '0'; else return (-1); /* invalid number */ retval = (retval * 10) + c; break; case 16: if (c >= 'a' && c <= 'f') c = c - 'a' + 10; else if (c >= 'A' && c <= 'F') c = c - 'A' + 10; else if (c >= '0' && c <= '9') c -= '0'; else return (-1); /* invalid number */ retval = (retval << 4) + c; break; } } if (onescompl) retval = ~retval; if (negate) retval = -retval; *valuep = retval; return (0); } /* * Path to the root device and root filesystem type from * property information derived from the boot subsystem */ void setbootpath(char *path) { rootfs.bo_flags |= BO_VALID; (void) copystr(path, rootfs.bo_name, BO_MAXOBJNAME, NULL); BMDPRINTF(("rootfs bootpath: %s\n", rootfs.bo_name)); } void setbootfstype(char *fstype) { (void) copystr(fstype, rootfs.bo_fstype, BO_MAXFSNAME, NULL); BMDPRINTF(("rootfs fstype: %s\n", rootfs.bo_fstype)); } /* * set parameters that can be set early during initialization. */ static void setparams() { struct sysparam *sysp; struct bootobj *bootobjp; for (sysp = sysparam_hd; sysp != NULL; sysp = sysp->sys_next) { if (sysp->sys_type == MOD_MODDIR) { default_path = sysp->sys_ptr; continue; } if (sysp->sys_type == MOD_SWAPDEV || sysp->sys_type == MOD_SWAPFS) bootobjp = &swapfile; else if (sysp->sys_type == MOD_ROOTFS) bootobjp = &rootfs; switch (sysp->sys_type) { case MOD_ROOTDEV: root_is_svm = 1; (void) copystr(sysp->sys_ptr, svm_bootpath, BO_MAXOBJNAME, NULL); break; case MOD_SWAPDEV: bootobjp->bo_flags |= BO_VALID; (void) copystr(sysp->sys_ptr, bootobjp->bo_name, BO_MAXOBJNAME, NULL); break; case MOD_ROOTFS: case MOD_SWAPFS: bootobjp->bo_flags |= BO_VALID; (void) copystr(sysp->sys_ptr, bootobjp->bo_fstype, BO_MAXOBJNAME, NULL); break; case MOD_ZFSROOT: (void) copystr(sysp->sys_ptr, zfs_bootpath, BO_MAXOBJNAME, NULL); break; default: break; } } } /* * clean up after an error. */ static void hwc_free(struct hwc_spec *hwcp) { char *name; if ((name = hwcp->hwc_parent_name) != NULL) kmem_free(name, strlen(name) + 1); if ((name = hwcp->hwc_class_name) != NULL) kmem_free(name, strlen(name) + 1); if ((name = hwcp->hwc_devi_name) != NULL) kmem_free(name, strlen(name) + 1); i_ddi_prop_list_delete(hwcp->hwc_devi_sys_prop_ptr); kmem_free(hwcp, sizeof (struct hwc_spec)); } /* * Free a list of specs */ void hwc_free_spec_list(struct hwc_spec *list) { while (list) { struct hwc_spec *tmp = list; list = tmp->hwc_next; hwc_free(tmp); } } struct val_list { struct val_list *val_next; enum { VAL_STRING, VAL_INTEGER } val_type; int val_size; union { char *string; int integer; } val; }; static struct val_list * add_val(struct val_list **val_listp, struct val_list *tail, int val_type, caddr_t val) { struct val_list *new_val; #ifdef DEBUG struct val_list *listp = *val_listp; #endif new_val = kmem_alloc(sizeof (struct val_list), KM_SLEEP); new_val->val_next = NULL; if ((new_val->val_type = val_type) == VAL_STRING) { new_val->val_size = strlen((char *)val) + 1; new_val->val.string = kmem_alloc(new_val->val_size, KM_SLEEP); (void) strcpy(new_val->val.string, (char *)val); } else { new_val->val_size = sizeof (int); new_val->val.integer = (int)(uintptr_t)val; } ASSERT((listp == NULL && tail == NULL) || (listp != NULL && tail != NULL)); if (tail != NULL) { ASSERT(tail->val_next == NULL); tail->val_next = new_val; } else { *val_listp = new_val; } return (new_val); } static void free_val_list(struct val_list *head) { struct val_list *tval_list; for (/* CSTYLED */; head != NULL; /* CSTYLED */) { tval_list = head; head = head->val_next; if (tval_list->val_type == VAL_STRING) kmem_free(tval_list->val.string, tval_list->val_size); kmem_free(tval_list, sizeof (struct val_list)); } } /* * make sure there are no reserved IEEE 1275 characters (except * for uppercase characters). */ static int valid_prop_name(char *name) { int i; int len = strlen(name); for (i = 0; i < len; i++) { if (name[i] < 0x21 || name[i] == '/' || name[i] == '\\' || name[i] == ':' || name[i] == '[' || name[i] == ']' || name[i] == '@') return (0); } return (1); } static void make_prop(struct _buf *file, dev_info_t *devi, char *name, struct val_list *val) { int propcnt = 0, val_type; struct val_list *vl, *tvl; caddr_t valbuf = NULL; char **valsp; int *valip; if (name == NULL) return; #ifdef DEBUG parse_debug(NULL, "%s", name); #endif if (!valid_prop_name(name)) { cmn_err(CE_WARN, "invalid property name '%s'", name); return; } if (val) { for (vl = val, val_type = vl->val_type; vl; vl = vl->val_next) { if (val_type != vl->val_type) { cmn_err(CE_WARN, "Mixed types in value list"); return; } propcnt++; } vl = val; if (val_type == VAL_INTEGER) { valip = (int *)kmem_alloc( (propcnt * sizeof (int)), KM_SLEEP); valbuf = (caddr_t)valip; while (vl) { tvl = vl; vl = vl->val_next; #ifdef DEBUG parse_debug(NULL, " %x", tvl->val.integer); #endif *valip = tvl->val.integer; valip++; } /* restore valip */ valip = (int *)valbuf; /* create the property */ if (e_ddi_prop_update_int_array(DDI_DEV_T_NONE, devi, name, valip, propcnt) != DDI_PROP_SUCCESS) { kobj_file_err(CE_WARN, file, "cannot create property %s", name); } /* cleanup */ kmem_free(valip, (propcnt * sizeof (int))); } else if (val_type == VAL_STRING) { valsp = (char **)kmem_alloc( ((propcnt + 1) * sizeof (char *)), KM_SLEEP); valbuf = (caddr_t)valsp; while (vl) { tvl = vl; vl = vl->val_next; #ifdef DEBUG parse_debug(NULL, " %s", tvl->val.string); #endif *valsp = tvl->val.string; valsp++; } /* terminate array with NULL */ *valsp = NULL; /* restore valsp */ valsp = (char **)valbuf; /* create the property */ if (e_ddi_prop_update_string_array(DDI_DEV_T_NONE, devi, name, valsp, propcnt) != DDI_PROP_SUCCESS) { kobj_file_err(CE_WARN, file, "cannot create property %s", name); } /* Clean up */ kmem_free(valsp, ((propcnt + 1) * sizeof (char *))); } else { cmn_err(CE_WARN, "Invalid property type"); return; } } else { /* * No value was passed in with property so we will assume * it is a "boolean" property and create an integer * property with 0 value. */ #ifdef DEBUG parse_debug(NULL, "\n"); #endif if (e_ddi_prop_update_int(DDI_DEV_T_NONE, devi, name, 0) != DDI_PROP_SUCCESS) { kobj_file_err(CE_WARN, file, "cannot create property %s", name); } } } static char omit_err[] = "(the ';' may have been omitted on previous spec!)"; static char prnt_err[] = "'parent' property already specified"; static char nm_err[] = "'name' property already specified"; static char class_err[] = "'class' property already specified"; typedef enum { hwc_begin, parent, drvname, drvclass, prop, parent_equals, name_equals, drvclass_equals, parent_equals_string, name_equals_string, drvclass_equals_string, prop_equals, prop_equals_string, prop_equals_integer, prop_equals_string_comma, prop_equals_integer_comma } hwc_state_t; static struct hwc_spec * get_hwc_spec(struct _buf *file, char *tokbuf, size_t linesize) { char *prop_name; token_t token; struct hwc_spec *hwcp; struct dev_info *devi; struct val_list *val_list, *tail; hwc_state_t state; u_longlong_t ival; hwcp = kmem_zalloc(sizeof (*hwcp), KM_SLEEP); devi = kmem_zalloc(sizeof (*devi), KM_SLEEP); state = hwc_begin; token = NAME; prop_name = NULL; val_list = NULL; tail = NULL; do { #ifdef DEBUG parse_debug(NULL, "state 0x%x\n", state); #endif switch (token) { case NAME: switch (state) { case prop: case prop_equals_string: case prop_equals_integer: make_prop(file, (dev_info_t *)devi, prop_name, val_list); if (prop_name) { kmem_free(prop_name, strlen(prop_name) + 1); prop_name = NULL; } if (val_list) { free_val_list(val_list); val_list = NULL; } tail = NULL; /*FALLTHROUGH*/ case hwc_begin: if (strcmp(tokbuf, "PARENT") == 0 || strcmp(tokbuf, "parent") == 0) { state = parent; } else if (strcmp(tokbuf, "NAME") == 0 || strcmp(tokbuf, "name") == 0) { state = drvname; } else if (strcmp(tokbuf, "CLASS") == 0 || strcmp(tokbuf, "class") == 0) { state = drvclass; prop_name = kmem_alloc(strlen(tokbuf) + 1, KM_SLEEP); (void) strcpy(prop_name, tokbuf); } else { state = prop; prop_name = kmem_alloc(strlen(tokbuf) + 1, KM_SLEEP); (void) strcpy(prop_name, tokbuf); } break; default: kobj_file_err(CE_WARN, file, tok_err, tokbuf); } break; case EQUALS: switch (state) { case drvname: state = name_equals; break; case parent: state = parent_equals; break; case drvclass: state = drvclass_equals; break; case prop: state = prop_equals; break; default: kobj_file_err(CE_WARN, file, tok_err, tokbuf); } break; case STRING: switch (state) { case name_equals: if (ddi_get_name((dev_info_t *)devi)) { kobj_file_err(CE_WARN, file, "%s %s", nm_err, omit_err); goto bad; } devi->devi_name = kmem_alloc(strlen(tokbuf) + 1, KM_SLEEP); (void) strcpy(devi->devi_name, tokbuf); state = hwc_begin; break; case parent_equals: if (hwcp->hwc_parent_name) { kobj_file_err(CE_WARN, file, "%s %s", prnt_err, omit_err); goto bad; } hwcp->hwc_parent_name = kmem_alloc(strlen (tokbuf) + 1, KM_SLEEP); (void) strcpy(hwcp->hwc_parent_name, tokbuf); state = hwc_begin; break; case drvclass_equals: if (hwcp->hwc_class_name) { kobj_file_err(CE_WARN, file, class_err); goto bad; } hwcp->hwc_class_name = kmem_alloc( strlen(tokbuf) + 1, KM_SLEEP); (void) strcpy(hwcp->hwc_class_name, tokbuf); /*FALLTHROUGH*/ case prop_equals: case prop_equals_string_comma: tail = add_val(&val_list, tail, VAL_STRING, tokbuf); state = prop_equals_string; break; default: kobj_file_err(CE_WARN, file, tok_err, tokbuf); } break; case HEXVAL: case DECVAL: switch (state) { case prop_equals: case prop_equals_integer_comma: (void) kobj_getvalue(tokbuf, &ival); tail = add_val(&val_list, tail, VAL_INTEGER, (caddr_t)(uintptr_t)ival); state = prop_equals_integer; break; default: kobj_file_err(CE_WARN, file, tok_err, tokbuf); } break; case COMMA: switch (state) { case prop_equals_string: state = prop_equals_string_comma; break; case prop_equals_integer: state = prop_equals_integer_comma; break; default: kobj_file_err(CE_WARN, file, tok_err, tokbuf); } break; case NEWLINE: kobj_newline(file); break; case POUND: kobj_find_eol(file); break; case EOF: kobj_file_err(CE_WARN, file, "Unexpected EOF"); goto bad; default: kobj_file_err(CE_WARN, file, tok_err, tokbuf); goto bad; } } while ((token = kobj_lex(file, tokbuf, linesize)) != SEMICOLON); switch (state) { case prop: case prop_equals_string: case prop_equals_integer: make_prop(file, (dev_info_t *)devi, prop_name, val_list); break; case hwc_begin: break; default: kobj_file_err(CE_WARN, file, "Unexpected end of line"); break; } /* copy 2 relevant members of devi to hwcp */ hwcp->hwc_devi_sys_prop_ptr = devi->devi_sys_prop_ptr; hwcp->hwc_devi_name = devi->devi_name; if (prop_name) kmem_free(prop_name, strlen(prop_name) + 1); if (val_list) free_val_list(val_list); kmem_free(devi, sizeof (struct dev_info)); return (hwcp); bad: if (prop_name) kmem_free(prop_name, strlen(prop_name) + 1); if (val_list) free_val_list(val_list); hwc_free(hwcp); if (devi->devi_name) kmem_free(devi->devi_name, strlen(devi->devi_name) + 1); kmem_free(devi, sizeof (struct dev_info)); return (NULL); } /* * This is the primary kernel interface to parse driver.conf files. * * Yet another bigstk thread handoff due to deep kernel stacks when booting * cache-only-clients. */ int hwc_parse(char *fname, struct par_list **pl, ddi_prop_t **props) { int ret; struct hwc_parse_mt *pltp = hwc_parse_mtalloc(fname, pl, props); if (curthread != &t0) { (void) thread_create(NULL, DEFAULTSTKSZ * 2, hwc_parse_thread, pltp, 0, &p0, TS_RUN, maxclsyspri); sema_p(&pltp->sema); } else { pltp->rv = hwc_parse_now(fname, pl, props); } ret = pltp->rv; hwc_parse_mtfree(pltp); return (ret); } /* * Calls to hwc_parse() are handled off to this routine in a separate * thread. */ static void hwc_parse_thread(struct hwc_parse_mt *pltp) { kmutex_t cpr_lk; callb_cpr_t cpr_i; mutex_init(&cpr_lk, NULL, MUTEX_DEFAULT, NULL); CALLB_CPR_INIT(&cpr_i, &cpr_lk, callb_generic_cpr, "hwc_parse"); /* * load and parse the .conf file * return the hwc_spec list (if any) to the creator of this thread */ pltp->rv = hwc_parse_now(pltp->name, pltp->pl, pltp->props); sema_v(&pltp->sema); mutex_enter(&cpr_lk); CALLB_CPR_EXIT(&cpr_i); mutex_destroy(&cpr_lk); thread_exit(); } /* * allocate and initialize a hwc_parse thread control structure */ static struct hwc_parse_mt * hwc_parse_mtalloc(char *name, struct par_list **pl, ddi_prop_t **props) { struct hwc_parse_mt *pltp = kmem_zalloc(sizeof (*pltp), KM_SLEEP); ASSERT(name != NULL); pltp->name = kmem_alloc(strlen(name) + 1, KM_SLEEP); bcopy(name, pltp->name, strlen(name) + 1); pltp->pl = pl; pltp->props = props; sema_init(&pltp->sema, 0, NULL, SEMA_DEFAULT, NULL); return (pltp); } /* * free a hwc_parse thread control structure */ static void hwc_parse_mtfree(struct hwc_parse_mt *pltp) { sema_destroy(&pltp->sema); kmem_free(pltp->name, strlen(pltp->name) + 1); kmem_free(pltp, sizeof (*pltp)); } /* * hwc_parse -- parse an hwconf file. Ignore error lines and parse * as much as possible. */ static int hwc_parse_now(char *fname, struct par_list **pl, ddi_prop_t **props) { struct _buf *file; struct hwc_spec *hwcp; char *tokval; token_t token; /* * Don't use kobj_open_path's use_moddir_suffix option, we only * expect to find conf files in the base module directory, not * an ISA-specific subdirectory. */ if ((file = kobj_open_path(fname, 1, 0)) == (struct _buf *)-1) { if (moddebug & MODDEBUG_ERRMSG) cmn_err(CE_WARN, "Cannot open %s", fname); return (-1); } /* * Initialize variables */ tokval = kmem_alloc(MAX_HWC_LINESIZE, KM_SLEEP); while ((token = kobj_lex(file, tokval, MAX_HWC_LINESIZE)) != EOF) { switch (token) { case POUND: /* * Skip comments. */ kobj_find_eol(file); break; case NAME: hwcp = get_hwc_spec(file, tokval, MAX_HWC_LINESIZE); if (hwcp == NULL) break; /* * No devi_name indicates global property. * Make sure parent and class not NULL. */ if (hwcp->hwc_devi_name == NULL) { if (hwcp->hwc_parent_name || hwcp->hwc_class_name) { kobj_file_err(CE_WARN, file, "missing name attribute"); hwc_free(hwcp); continue; } /* Add to global property list */ add_props(hwcp, props); break; } /* * This is a node spec, either parent or class * must be specified. */ if ((hwcp->hwc_parent_name == NULL) && (hwcp->hwc_class_name == NULL)) { kobj_file_err(CE_WARN, file, "missing parent or class attribute"); hwc_free(hwcp); continue; } /* add to node spec list */ add_spec(hwcp, pl); break; case NEWLINE: kobj_newline(file); break; default: kobj_file_err(CE_WARN, file, tok_err, tokval); break; } } /* * XXX - Check for clean termination. */ kmem_free(tokval, MAX_HWC_LINESIZE); kobj_close_file(file); return (0); /* always return success */ } void make_aliases(struct bind **bhash) { enum { AL_NEW, AL_DRVNAME, AL_DRVNAME_COMMA, AL_ALIAS, AL_ALIAS_COMMA } state; struct _buf *file; char tokbuf[MAXNAMELEN]; char drvbuf[MAXNAMELEN]; token_t token; major_t major; int done = 0; static char dupwarn[] = "!Driver alias \"%s\" conflicts with " "an existing driver name or alias."; if ((file = kobj_open_file(dafile)) == (struct _buf *)-1) return; state = AL_NEW; major = (major_t)-1; while (!done) { token = kobj_lex(file, tokbuf, sizeof (tokbuf)); switch (token) { case POUND: state = AL_NEW; kobj_find_eol(file); break; case NAME: case STRING: switch (state) { case AL_NEW: (void) strcpy(drvbuf, tokbuf); state = AL_DRVNAME; break; case AL_DRVNAME_COMMA: (void) strcat(drvbuf, tokbuf); state = AL_DRVNAME; break; case AL_ALIAS_COMMA: (void) strcat(drvbuf, tokbuf); state = AL_ALIAS; break; case AL_DRVNAME: major = mod_name_to_major(drvbuf); if (major == (major_t)-1) { kobj_find_eol(file); state = AL_NEW; } else { (void) strcpy(drvbuf, tokbuf); state = AL_ALIAS; } break; case AL_ALIAS: if (make_mbind(drvbuf, major, NULL, bhash) != 0) { cmn_err(CE_WARN, dupwarn, drvbuf); } break; } break; case COMMA: (void) strcat(drvbuf, tokbuf); switch (state) { case AL_DRVNAME: state = AL_DRVNAME_COMMA; break; case AL_ALIAS: state = AL_ALIAS_COMMA; break; default: kobj_file_err(CE_WARN, file, tok_err, tokbuf); } break; case EOF: done = 1; /*FALLTHROUGH*/ case NEWLINE: if (state == AL_ALIAS) { if (make_mbind(drvbuf, major, NULL, bhash) != 0) { cmn_err(CE_WARN, dupwarn, drvbuf); } } else if (state != AL_NEW) { kobj_file_err(CE_WARN, file, "Missing alias for %s", drvbuf); } kobj_newline(file); state = AL_NEW; major = (major_t)-1; break; default: kobj_file_err(CE_WARN, file, tok_err, tokbuf); } } kobj_close_file(file); } /* * It is called for parsing these files: * - /etc/path_to_inst * - /etc/name_to_major * - /etc/name_to_sysnum * A callback "int (*line_parser)(char *, int, char *, struct bind **)" * is invoked for each line of the file. * The callback can inhash the entry into a hashtable by supplying * a pre-allocated hashtable in "struct bind **hashtab". */ int read_binding_file(char *bindfile, struct bind **hashtab, int (*line_parser)(char *, int, char *, struct bind **)) { enum { B_NEW, B_NAME, B_VAL, B_BIND_NAME } state; struct _buf *file; char tokbuf[MAXNAMELEN]; token_t token; int maxnum = 0; char *bind_name = NULL, *name = NULL, *bn = NULL; u_longlong_t val; int done = 0; static char num_err[] = "Missing number on preceding line?"; static char dupwarn[] = "!The binding file entry \"%s %u\" conflicts " "with a previous entry"; if (hashtab != NULL) { clear_binding_hash(hashtab); } if ((file = kobj_open_file(bindfile)) == (struct _buf *)-1) panic("read_binding_file: %s file not found", bindfile); state = B_NEW; while (!done) { token = kobj_lex(file, tokbuf, sizeof (tokbuf)); switch (token) { case POUND: state = B_NEW; kobj_find_eol(file); break; case NAME: case STRING: switch (state) { case B_NEW: /* * This case is for the first name and * possibly only name in an entry. */ ASSERT(name == NULL); name = kmem_alloc(strlen(tokbuf) + 1, KM_SLEEP); (void) strcpy(name, tokbuf); state = B_NAME; break; case B_VAL: /* * This case is for a second name, which * would be the binding name if the first * name was actually a generic name. */ ASSERT(bind_name == NULL); bind_name = kmem_alloc(strlen(tokbuf) + 1, KM_SLEEP); (void) strcpy(bind_name, tokbuf); state = B_BIND_NAME; break; default: kobj_file_err(CE_WARN, file, num_err); } break; case HEXVAL: case DECVAL: if (state != B_NAME) { kobj_file_err(CE_WARN, file, "Missing name?"); state = B_NEW; continue; } (void) kobj_getvalue(tokbuf, &val); if (val > (u_longlong_t)INT_MAX) { kobj_file_err(CE_WARN, file, "value %llu too large", val); state = B_NEW; continue; } state = B_VAL; break; case EOF: done = 1; /*FALLTHROUGH*/ case NEWLINE: if ((state == B_BIND_NAME) || (state == B_VAL)) { if (state == B_BIND_NAME) bn = bind_name; else bn = NULL; if (line_parser != NULL) { if ((*line_parser)(name, (int)val, bn, hashtab) == 0) maxnum = MAX((int)val, maxnum); else kobj_file_err(CE_WARN, file, dupwarn, name, (uint_t)val); } } else if (state != B_NEW) kobj_file_err(CE_WARN, file, "Syntax error?"); if (name) { kmem_free(name, strlen(name) + 1); name = NULL; } if (bind_name) { kmem_free(bind_name, strlen(bind_name) + 1); bind_name = NULL; } state = B_NEW; kobj_newline(file); break; default: kobj_file_err(CE_WARN, file, "Missing name/number?"); break; } } ASSERT(name == NULL); /* any leaks? */ ASSERT(bind_name == NULL); kobj_close_file(file); return (maxnum); } /* * read_dacf_binding_file() * Read the /etc/dacf.conf file and build the dacf_rule_t database from it. * * The syntax of a line in the dacf.conf file is: * dev-spec [module:]op-set operation options [config-args]; * * Where: * 1. dev-spec is of the format: name="data" * 2. operation is the operation that this rule matches. (i.e. pre-detach) * 3. options is a comma delimited list of options (i.e. debug,foobar) * 4. config-data is a whitespace delimited list of the format: name="data" */ int read_dacf_binding_file(char *filename) { enum { DACF_BEGIN, /* minor_nodetype="ddi_mouse:serial" */ DACF_NT_SPEC, DACF_NT_EQUALS, DACF_NT_DATA, /* consconfig:mouseconfig */ DACF_MN_MODNAME, DACF_MN_COLON, DACF_MN_OPSET, /* op */ DACF_OP_NAME, /* [ option1, option2, option3... | - ] */ DACF_OPT_OPTION, DACF_OPT_COMMA, DACF_OPT_END, /* argname1="argval1" argname2="argval2" ... */ DACF_OPARG_SPEC, DACF_OPARG_EQUALS, DACF_OPARG_DATA, DACF_ERR, DACF_ERR_NEWLINE, DACF_COMMENT } state = DACF_BEGIN; struct _buf *file; char *fname; token_t token; char tokbuf[MAXNAMELEN]; char mn_modname_buf[MAXNAMELEN], *mn_modnamep = NULL; char mn_opset_buf[MAXNAMELEN], *mn_opsetp = NULL; char nt_data_buf[MAXNAMELEN], *nt_datap = NULL; char arg_spec_buf[MAXNAMELEN]; uint_t opts = 0; dacf_devspec_t nt_spec_type = DACF_DS_ERROR; dacf_arg_t *arg_list = NULL; dacf_opid_t opid = DACF_OPID_ERROR; int done = 0; static char w_syntax[] = "'%s' unexpected"; static char w_equals[] = "'=' is illegal in the current context"; static char w_baddevspec[] = "device specification '%s' unrecognized"; static char w_badop[] = "operation '%s' unrecognized"; static char w_badopt[] = "option '%s' unrecognized, ignoring"; static char w_newline[] = "rule is incomplete"; static char w_insert[] = "failed to register rule"; static char w_comment[] = "'#' not allowed except at start of line"; static char w_dupargs[] = "argument '%s' duplicates a previous argument, skipping"; static char w_nt_empty[] = "empty device specification not allowed"; if (filename == NULL) { fname = dacffile; /* default binding file */ } else { fname = filename; /* user specified */ } if ((file = kobj_open_file(fname)) == (struct _buf *)-1) { return (ENOENT); } if (dacfdebug & DACF_DBG_MSGS) { printf("dacf debug: clearing rules database\n"); } mutex_enter(&dacf_lock); dacf_clear_rules(); if (dacfdebug & DACF_DBG_MSGS) { printf("dacf debug: parsing %s\n", fname); } while (!done) { token = kobj_lex(file, tokbuf, sizeof (tokbuf)); switch (token) { case POUND: /* comment line */ if (state != DACF_BEGIN) { kobj_file_err(CE_WARN, file, w_comment); state = DACF_ERR; break; } state = DACF_COMMENT; kobj_find_eol(file); break; case EQUALS: switch (state) { case DACF_NT_SPEC: state = DACF_NT_EQUALS; break; case DACF_OPARG_SPEC: state = DACF_OPARG_EQUALS; break; default: kobj_file_err(CE_WARN, file, w_equals); state = DACF_ERR; } break; case NAME: switch (state) { case DACF_BEGIN: nt_spec_type = dacf_get_devspec(tokbuf); if (nt_spec_type == DACF_DS_ERROR) { kobj_file_err(CE_WARN, file, w_baddevspec, tokbuf); state = DACF_ERR; break; } state = DACF_NT_SPEC; break; case DACF_NT_DATA: (void) strncpy(mn_modname_buf, tokbuf, sizeof (mn_modname_buf)); mn_modnamep = mn_modname_buf; state = DACF_MN_MODNAME; break; case DACF_MN_MODNAME: /* * This handles the 'optional' modname. * What we thought was the modname is really * the op-set. So it is copied over. */ ASSERT(mn_modnamep); (void) strncpy(mn_opset_buf, mn_modnamep, sizeof (mn_opset_buf)); mn_opsetp = mn_opset_buf; mn_modnamep = NULL; /* * Now, the token we just read is the opset, * so look that up and fill in opid */ if ((opid = dacf_get_op(tokbuf)) == DACF_OPID_ERROR) { kobj_file_err(CE_WARN, file, w_badop, tokbuf); state = DACF_ERR; break; } state = DACF_OP_NAME; break; case DACF_MN_COLON: (void) strncpy(mn_opset_buf, tokbuf, sizeof (mn_opset_buf)); mn_opsetp = mn_opset_buf; state = DACF_MN_OPSET; break; case DACF_MN_OPSET: if ((opid = dacf_get_op(tokbuf)) == DACF_OPID_ERROR) { kobj_file_err(CE_WARN, file, w_badop, tokbuf); state = DACF_ERR; break; } state = DACF_OP_NAME; break; case DACF_OP_NAME: /* * This case is just like DACF_OPT_COMMA below, * but we check for the sole '-' argument */ if (strcmp(tokbuf, "-") == 0) { state = DACF_OPT_END; break; } /*FALLTHROUGH*/ case DACF_OPT_COMMA: /* * figure out what option was given, but don't * make a federal case if invalid, just skip it */ if (dacf_getopt(tokbuf, &opts) != 0) { kobj_file_err(CE_WARN, file, w_badopt, tokbuf); } state = DACF_OPT_OPTION; break; case DACF_OPT_END: case DACF_OPT_OPTION: case DACF_OPARG_DATA: (void) strncpy(arg_spec_buf, tokbuf, sizeof (arg_spec_buf)); state = DACF_OPARG_SPEC; break; case DACF_OPARG_EQUALS: /* * Add the arg. Warn if it's a duplicate */ if (dacf_arg_insert(&arg_list, arg_spec_buf, tokbuf) != 0) { kobj_file_err(CE_WARN, file, w_dupargs, arg_spec_buf); } state = DACF_OPARG_DATA; break; default: kobj_file_err(CE_WARN, file, w_syntax, tokbuf); state = DACF_ERR; break; } break; case STRING: /* * We need to check to see if the string has a \n in it. * If so, we had an unmatched " mark error, and lex has * already emitted an error for us, so we need to enter * the error state. Stupid lex. */ if (strchr(tokbuf, '\n')) { state = DACF_ERR; break; } switch (state) { case DACF_NT_EQUALS: if (strlen(tokbuf) == 0) { kobj_file_err(CE_WARN, file, w_nt_empty); state = DACF_ERR; break; } state = DACF_NT_DATA; nt_datap = nt_data_buf; (void) strncpy(nt_datap, tokbuf, sizeof (nt_data_buf)); break; case DACF_OPARG_EQUALS: /* * Add the arg. Warn if it's a duplicate */ if (dacf_arg_insert(&arg_list, arg_spec_buf, tokbuf) != 0) { kobj_file_err(CE_WARN, file, w_dupargs, arg_spec_buf); } state = DACF_OPARG_DATA; break; default: kobj_file_err(CE_WARN, file, w_syntax, tokbuf); state = DACF_ERR; break; } break; case COMMA: switch (state) { case DACF_OPT_OPTION: state = DACF_OPT_COMMA; break; default: kobj_file_err(CE_WARN, file, w_syntax, ","); state = DACF_ERR; break; } break; case COLON: if (state == DACF_MN_MODNAME) state = DACF_MN_COLON; else { kobj_file_err(CE_WARN, file, w_syntax, ":"); state = DACF_ERR; } break; case EOF: done = 1; /*FALLTHROUGH*/ case NEWLINE: if (state == DACF_COMMENT || state == DACF_BEGIN) { state = DACF_BEGIN; kobj_newline(file); break; } if ((state != DACF_OPT_OPTION) && (state != DACF_OPARG_DATA) && (state != DACF_OPT_END)) { kobj_file_err(CE_WARN, file, w_newline); /* * We can't just do DACF_ERR here, since we'll * wind up eating the _next_ newline if so. */ state = DACF_ERR_NEWLINE; kobj_newline(file); break; } /* * insert the rule. */ if (dacf_rule_insert(nt_spec_type, nt_datap, mn_modnamep, mn_opsetp, opid, opts, arg_list) < 0) { /* * We can't just do DACF_ERR here, since we'll * wind up eating the _next_ newline if so. */ kobj_file_err(CE_WARN, file, w_insert); state = DACF_ERR_NEWLINE; kobj_newline(file); break; } state = DACF_BEGIN; kobj_newline(file); break; default: kobj_file_err(CE_WARN, file, w_syntax, tokbuf); break; } /* switch */ /* * Clean up after ourselves, either after a line has terminated * successfully or because of a syntax error; or when we reach * EOF (remember, we may reach EOF without being 'done' with * handling a particular line). */ if (state == DACF_ERR) { kobj_find_eol(file); } if ((state == DACF_BEGIN) || (state == DACF_ERR) || (state == DACF_ERR_NEWLINE) || done) { nt_datap = NULL; mn_modnamep = mn_opsetp = NULL; opts = 0; opid = DACF_OPID_ERROR; nt_spec_type = DACF_DS_ERROR; dacf_arglist_delete(&arg_list); state = DACF_BEGIN; } } /* while */ if (dacfdebug & DACF_DBG_MSGS) { printf("\ndacf debug: done!\n"); } mutex_exit(&dacf_lock); kobj_close_file(file); return (0); } void lock_hw_class_list() { mutex_enter(&hcl_lock); } void unlock_hw_class_list() { mutex_exit(&hcl_lock); } void add_class(char *exporter, char *class) { struct hwc_class *hcl; /* * If exporter's major is not registered in /etc/name_to_major, * don't update hwc_class, but just return here. */ if (ddi_name_to_major(exporter) >= devcnt) { cmn_err(CE_WARN, "No major number for driver %s" " in class %s", exporter, class); return; } hcl = kmem_zalloc(sizeof (struct hwc_class), KM_SLEEP); hcl->class_exporter = kmem_alloc(strlen(exporter) + 1, KM_SLEEP); hcl->class_name = kmem_alloc(strlen(class) + 1, KM_SLEEP); (void) strcpy(hcl->class_exporter, exporter); (void) strcpy(hcl->class_name, class); lock_hw_class_list(); hcl->class_next = hcl_head; hcl_head = hcl; unlock_hw_class_list(); } /* * Return the number of classes exported. If buf is not NULL, fill in * the array of the class names as well. * * Caller must hold hcl_lock to ensure the class list unmodified while * it is accessed. A typical caller will get a count first and then * allocate buf. The lock should be held by the caller. */ int get_class(const char *exporter, char **buf) { int n = 0; struct hwc_class *hcl; ASSERT(mutex_owned(&hcl_lock)); for (hcl = hcl_head; hcl != NULL; hcl = hcl->class_next) { if (strcmp(exporter, hcl->class_exporter) == 0) { if (buf) buf[n] = hcl->class_name; ++n; } } return (n); } void read_class_file(void) { struct _buf *file; struct hwc_class *hcl, *hcl1; char tokbuf[MAXNAMELEN]; enum { C_BEGIN, C_EXPORTER, C_END } state; token_t token; int done = 0; char *exporter = NULL, *class = NULL, *name = NULL; if (hcl_head != NULL) { hcl = hcl_head; while (hcl != NULL) { kmem_free(hcl->class_exporter, strlen(hcl->class_exporter) + 1); hcl1 = hcl; hcl = hcl->class_next; kmem_free(hcl1, sizeof (struct hwc_class)); } hcl_head = NULL; } if ((file = kobj_open_file(class_file)) == (struct _buf *)-1) return; state = C_BEGIN; while (!done) { token = kobj_lex(file, tokbuf, sizeof (tokbuf)); switch (token) { case POUND: kobj_find_eol(file); break; case NAME: case STRING: name = kmem_alloc(strlen(tokbuf) + 1, KM_SLEEP); (void) strcpy(name, tokbuf); switch (state) { case C_BEGIN: exporter = name; state = C_EXPORTER; break; case C_EXPORTER: class = name; add_class(exporter, class); state = C_END; break; case C_END: kobj_file_err(CE_WARN, file, "Extra noise after entry"); kmem_free(name, strlen(name) + 1); kobj_find_eol(file); break; } /* End Switch */ break; case EOF: done = 1; /*FALLTHROUGH*/ case NEWLINE: kobj_newline(file); if (state == C_EXPORTER) kobj_file_err(CE_WARN, file, "Partial entry ignored"); state = C_BEGIN; if (exporter) kmem_free(exporter, strlen(exporter) + 1); if (class) kmem_free(class, strlen(class) + 1); exporter = NULL; class = NULL; break; default: kobj_file_err(CE_WARN, file, tok_err, tokbuf); break; } } kobj_close_file(file); } /* * Given par_list, get a list of parent major number */ int impl_parlist_to_major(struct par_list *pl, char parents[]) { struct hwc_spec *hwcp; struct hwc_class *hcl; major_t major; int nmajor = 0; extern int devcnt; for (; pl != NULL; pl = pl->par_next) { if ((pl->par_major < devcnt) && (parents[pl->par_major] == 0)) { parents[pl->par_major] = 1; nmajor++; continue; } /* parent specs cannot be mapped to a driver */ if (pl->par_major != (major_t)-1) continue; /* class spec */ hwcp = pl->par_specs; ASSERT(hwcp->hwc_class_name); ASSERT(hwcp->hwc_parent_name == NULL); for (hcl = hcl_head; hcl != NULL; hcl = hcl->class_next) { if (strcmp(hwcp->hwc_class_name, hcl->class_name) != 0) continue; major = ddi_name_to_major(hcl->class_exporter); ASSERT(major != (major_t)-1); if (parents[major] == 0) { parents[major] = 1; nmajor++; } } } return (nmajor); } /* * delete a parent list and all its hwc specs */ void impl_delete_par_list(struct par_list *pl) { struct par_list *saved_pl; struct hwc_spec *hp, *hp1; while (pl) { hp = pl->par_specs; while (hp) { hp1 = hp; hp = hp->hwc_next; hwc_free(hp1); } saved_pl = pl; pl = pl->par_next; kmem_free(saved_pl, sizeof (*saved_pl)); } } #if defined(_PSM_MODULES) void open_mach_list(void) { struct _buf *file; char tokbuf[MAXNAMELEN]; token_t token; struct psm_mach *machp; if ((file = kobj_open_file(mach_file)) == (struct _buf *)-1) return; while ((token = kobj_lex(file, tokbuf, sizeof (tokbuf))) != EOF) { switch (token) { case POUND: kobj_find_eol(file); break; case NAME: case STRING: machp = kmem_alloc((sizeof (struct psm_mach) + strlen(tokbuf) + 1), KM_SLEEP); machp->m_next = pmach_head; machp->m_machname = (char *)(machp + 1); (void) strcpy(machp->m_machname, tokbuf); pmach_head = machp; break; case NEWLINE: kobj_newline(file); break; default: kobj_file_err(CE_WARN, file, tok_err, tokbuf); break; } } kobj_close_file(file); } void * get_next_mach(void *handle, char *buf) { struct psm_mach *machp; machp = (struct psm_mach *)handle; if (machp) machp = machp->m_next; else machp = pmach_head; if (machp) (void) strcpy(buf, machp->m_machname); return (machp); } void close_mach_list(void) { struct psm_mach *machp; while (pmach_head) { machp = pmach_head; pmach_head = machp->m_next; kmem_free(machp, sizeof (struct psm_mach) + strlen(machp->m_machname) + 1); } } #endif /* _PSM_MODULES */ #if defined(_RTC_CONFIG) /* * Read in the 'zone_lag' value from the rtc configuration file, * and return the value to the caller. Note that there is other information * in this file (zone_info), so we ignore unknown values. We do spit out * warnings if the line doesn't begin with an identifier, or if we don't find * exactly "zone_lag=value". No one should be editing this file by hand * (use the rtc command instead), but it's better to be careful. */ long process_rtc_config_file(void) { enum { R_NEW, R_NAME, R_EQUALS, R_VALUE } state; struct _buf *file; char tokbuf[MAXNAMELEN]; token_t token; long zone_lag = 0; u_longlong_t tmp; int done = 0; if ((file = kobj_open_file(rtc_config_file)) == (struct _buf *)-1) return (0); state = R_NEW; while (!done) { token = kobj_lex(file, tokbuf, sizeof (tokbuf)); switch (token) { case POUND: kobj_find_eol(file); break; case NAME: case STRING: if (state == R_NEW) { if (strcmp(tokbuf, "zone_lag") == 0) state = R_NAME; else kobj_find_eol(file); /* Ignore */ } else kobj_file_err(CE_WARN, file, tok_err, tokbuf); break; case EQUALS: if (state == R_NAME) state = R_EQUALS; else kobj_file_err(CE_WARN, file, tok_err, tokbuf); break; case DECVAL: if (state == R_EQUALS) { if (kobj_getvalue(tokbuf, &tmp) != 0) kobj_file_err(CE_WARN, file, "Bad value %s for zone_lag", tokbuf); else zone_lag = (long)tmp; state = R_VALUE; } else kobj_file_err(CE_WARN, file, tok_err, tokbuf); break; case EOF: done = 1; /*FALLTHROUGH*/ case NEWLINE: if (state != R_NEW && state != R_VALUE) kobj_file_err(CE_WARN, file, "Partial zone_lag entry ignored"); kobj_newline(file); state = R_NEW; break; default: kobj_file_err(CE_WARN, file, tok_err, tokbuf); break; } } kobj_close_file(file); return (zone_lag); } #endif /* _RTC_CONFIG */ /* * Append node spec to the end of par_list */ static void append(struct hwc_spec *spec, struct par_list *par) { struct hwc_spec *hwc, *last; ASSERT(par->par_specs); for (hwc = par->par_specs; hwc; hwc = hwc->hwc_next) last = hwc; last->hwc_next = spec; } /* * Given a parent=/full-pathname, see if the platform * can resolve the pathname to driver, otherwise, try * the leaf node name. */ static major_t get_major(char *parent) { major_t major = (major_t)-1; char *tmp, *driver = NULL; if (*parent == '/') major = path_to_major(parent); if (major != (major_t)-1) return (major); /* extract the name between '/' and '@' */ if (*parent == '/') driver = strrchr(parent, '/') + 1; else driver = parent; if ((tmp = strchr(driver, '@')) != NULL) *tmp = '\0'; major = ddi_name_to_major(driver); if (tmp) *tmp = '@'; return (major); } /* * Chain together specs whose parent's module name is the same. */ static void add_spec(struct hwc_spec *spec, struct par_list **par) { major_t maj; struct par_list *pl, *par_last = NULL; char *parent = spec->hwc_parent_name; ASSERT(parent || spec->hwc_class_name); /* * If given a parent=/full-pathname, see if the platform * can resolve the pathname to driver, otherwise, try * the leaf node name. * * If parent=/full-pathname doesn't resolve to a driver, * this could be cause by DR removal of the device. * We put it on the major=-2 list in case the device * is brought back into the system by DR. */ if (parent) { maj = get_major(parent); if (maj == (major_t)-1) { if ((*parent == '/') && (strncmp(parent, "/pseudo", 7) != 0)) { maj = (major_t)-2; } else { cmn_err(CE_WARN, "add_spec: No major number for %s", parent); hwc_free(spec); return; } } } else maj = (major_t)-1; /* * Scan the list looking for a matching parent. */ for (pl = *par; pl; pl = pl->par_next) { if (maj == pl->par_major) { append(spec, pl); return; } par_last = pl; } /* * Didn't find a match on the list. Make a new parent list. */ pl = kmem_zalloc(sizeof (*pl), KM_SLEEP); pl->par_major = maj; pl->par_specs = spec; if (*par == NULL) { /* null par list */ *par = pl; return; } /* put "class=" entries last (lower pri if dups) */ if (maj == (major_t)-1) { par_last->par_next = pl; return; } /* ensure unresolved "parent=/full-path" goes first */ if ((maj != (major_t)-2) && ((*par)->par_major == (major_t)-2)) par = &(*par)->par_next; pl->par_next = *par; *par = pl; } /* * Add property spec to property list in original order */ static void add_props(struct hwc_spec *spec, ddi_prop_t **props) { ASSERT(spec->hwc_devi_name == NULL); if (spec->hwc_devi_sys_prop_ptr) { while (*props) props = &(*props)->prop_next; *props = spec->hwc_devi_sys_prop_ptr; /* remove these properties from the spec */ spec->hwc_devi_sys_prop_ptr = NULL; } hwc_free(spec); }