diff --git a/sys/conf/files b/sys/conf/files index 73f54adbc982..73f2e0bdc2cc 100644 --- a/sys/conf/files +++ b/sys/conf/files @@ -793,6 +793,7 @@ kern/subr_disk.c standard kern/subr_disklabel.c standard kern/subr_diskslice.c standard kern/subr_eventhandler.c standard +kern/subr_hints.c standard kern/subr_kobj.c standard kern/subr_log.c standard kern/subr_mbuf.c standard diff --git a/sys/kern/subr_bus.c b/sys/kern/subr_bus.c index 67819b20e656..098b89bcdedb 100644 --- a/sys/kern/subr_bus.c +++ b/sys/kern/subr_bus.c @@ -2126,302 +2126,3 @@ bus_data_generation_update(void) { bus_data_generation++; } - -/*======================================*/ -/* - * Access functions for device resources. - */ - -extern char static_hints[]; /* by config for now */ -extern int hintmode; /* 0 = off. 1 = config, 2 = fallback */ -static char *hintp; - -/* - * Evil wildcarding resource string lookup. - * This walks the supplied env string table and returns a match. - * The start point can be remembered for incremental searches. - */ -static int -res_find(int *line, int *startln, - const char *name, int *unit, const char *resname, const char *value, - const char **ret_name, int *ret_namelen, int *ret_unit, - const char **ret_resname, int *ret_resnamelen, const char **ret_value) -{ - int n = 0, hit; - char r_name[32]; - int r_unit; - char r_resname[32]; - char r_value[128]; - const char *s, *cp; - char *p; - - if (hintp == NULL) { - switch (hintmode) { - case 0: /* config supplied nothing */ - hintp = kern_envp; - break; - case 1: /* static hints only */ - hintp = static_hints; - break; - case 2: /* fallback mode */ - cp = kern_envp; - while (cp) { - if (strncmp(cp, "hint.", 5) == 0) { - cp = NULL; - hintp = kern_envp; - break; - } - while (*cp != '\0') - cp++; - cp++; - if (*cp == '\0') { - cp = NULL; - hintp = static_hints; - break; - } - } - break; - default: - break; - } - if (hintp == NULL) - hintp = kern_envp; - } - - cp = hintp; - while (cp) { - hit = 1; - (*line)++; - if (strncmp(cp, "hint.", 5) != 0) - hit = 0; - else - n = sscanf(cp, "hint.%32[^.].%d.%32[^=]=%128s", - r_name, &r_unit, r_resname, r_value); - if (hit && n != 4) { - printf("CONFIG: invalid hint '%s'\n", cp); - /* XXX: abuse bogus index() declaration */ - p = index(cp, 'h'); - *p = 'H'; - hit = 0; - } - if (hit && startln && *startln >= 0 && *line < *startln) - hit = 0; - if (hit && name && strcmp(name, r_name) != 0) - hit = 0; - if (hit && unit && *unit != r_unit) - hit = 0; - if (hit && resname && strcmp(resname, r_resname) != 0) - hit = 0; - if (hit && value && strcmp(value, r_value) != 0) - hit = 0; - if (hit) - break; - while (*cp != '\0') - cp++; - cp++; - if (*cp == '\0') { - cp = NULL; - break; - } - } - if (cp == NULL) - return ENOENT; - - s = cp; - /* This is a bit of a hack, but at least is reentrant */ - /* Note that it returns some !unterminated! strings. */ - s = index(s, '.') + 1; /* start of device */ - if (ret_name) - *ret_name = s; - s = index(s, '.') + 1; /* start of unit */ - if (ret_namelen) - *ret_namelen = s - *ret_name - 1; /* device length */ - if (ret_unit) - *ret_unit = r_unit; - s = index(s, '.') + 1; /* start of resname */ - if (ret_resname) - *ret_resname = s; - s = index(s, '=') + 1; /* start of value */ - if (ret_resnamelen) - *ret_resnamelen = s - *ret_resname - 1; /* value len */ - if (ret_value) - *ret_value = s; - if (startln) /* line number for anchor */ - *startln = *line + 1; - return 0; -} - -/* - * Search all the data sources for matches to our query. We look for - * dynamic hints first as overrides for static or fallback hints. - */ -static int -resource_find(int *line, int *startln, - const char *name, int *unit, const char *resname, const char *value, - const char **ret_name, int *ret_namelen, int *ret_unit, - const char **ret_resname, int *ret_resnamelen, const char **ret_value) -{ - int i; - int un; - - *line = 0; - - /* Search for exact unit matches first */ - i = res_find(line, startln, name, unit, resname, value, - ret_name, ret_namelen, ret_unit, ret_resname, ret_resnamelen, - ret_value); - if (i == 0) - return 0; - if (unit == NULL) - return ENOENT; - /* If we are still here, search for wildcard matches */ - un = -1; - i = res_find(line, startln, name, &un, resname, value, - ret_name, ret_namelen, ret_unit, ret_resname, ret_resnamelen, - ret_value); - if (i == 0) - return 0; - return ENOENT; -} - -int -resource_int_value(const char *name, int unit, const char *resname, int *result) -{ - int error; - const char *str; - char *op; - unsigned long val; - int line; - - line = 0; - error = resource_find(&line, NULL, name, &unit, resname, NULL, - NULL, NULL, NULL, NULL, NULL, &str); - if (error) - return error; - if (*str == '\0') - return EFTYPE; - val = strtoul(str, &op, 0); - if (*op != '\0') - return EFTYPE; - *result = val; - return 0; -} - -int -resource_long_value(const char *name, int unit, const char *resname, - long *result) -{ - int error; - const char *str; - char *op; - unsigned long val; - int line; - - line = 0; - error = resource_find(&line, NULL, name, &unit, resname, NULL, - NULL, NULL, NULL, NULL, NULL, &str); - if (error) - return error; - if (*str == '\0') - return EFTYPE; - val = strtoul(str, &op, 0); - if (*op != '\0') - return EFTYPE; - *result = val; - return 0; -} - -int -resource_string_value(const char *name, int unit, const char *resname, - const char **result) -{ - int error; - const char *str; - int line; - - line = 0; - error = resource_find(&line, NULL, name, &unit, resname, NULL, - NULL, NULL, NULL, NULL, NULL, &str); - if (error) - return error; - *result = str; - return 0; -} - -/* - * This is a bit nasty, but allows us to not modify the env strings. - */ -static const char * -resource_string_copy(const char *s, int len) -{ - static char stringbuf[256]; - static int offset = 0; - const char *ret; - - if (len == 0) - len = strlen(s); - if (len > 255) - return NULL; - if ((offset + len + 1) > 255) - offset = 0; - bcopy(s, &stringbuf[offset], len); - stringbuf[offset + len] = '\0'; - ret = &stringbuf[offset]; - offset += len + 1; - return ret; -} - -/* - * err = resource_find_at(&anchor, &name, &unit, resname, value) - * Iteratively fetch a list of devices wired "at" something - * res and value are restrictions. eg: "at", "scbus0". - * For practical purposes, res = required, value = optional. - * *name and *unit are set. - * set *anchor to zero before starting. - */ -int -resource_find_match(int *anchor, const char **name, int *unit, - const char *resname, const char *value) -{ - const char *found_name; - int found_namelen; - int found_unit; - int ret; - int newln; - - newln = *anchor; - ret = resource_find(anchor, &newln, NULL, NULL, resname, value, - &found_name, &found_namelen, &found_unit, NULL, NULL, NULL); - if (ret == 0) { - *name = resource_string_copy(found_name, found_namelen); - *unit = found_unit; - } - *anchor = newln; - return ret; -} - - -/* - * err = resource_find_dev(&anchor, name, &unit, res, value); - * Iterate through a list of devices, returning their unit numbers. - * res and value are optional restrictions. eg: "at", "scbus0". - * *unit is set to the value. - * set *anchor to zero before starting. - */ -int -resource_find_dev(int *anchor, const char *name, int *unit, - const char *resname, const char *value) -{ - int found_unit; - int newln; - int ret; - - newln = *anchor; - ret = resource_find(anchor, &newln, name, NULL, resname, value, - NULL, NULL, &found_unit, NULL, NULL, NULL); - if (ret == 0) { - *unit = found_unit; - } - *anchor = newln; - return ret; -}