diff options
Diffstat (limited to 'usr.sbin/config/config.y')
| -rw-r--r-- | usr.sbin/config/config.y | 109 |
1 files changed, 82 insertions, 27 deletions
diff --git a/usr.sbin/config/config.y b/usr.sbin/config/config.y index 40ee93d..9c8ba39 100644 --- a/usr.sbin/config/config.y +++ b/usr.sbin/config/config.y @@ -70,6 +70,7 @@ * $FreeBSD$ */ +#include <assert.h> #include <ctype.h> #include <err.h> #include <stdio.h> @@ -77,7 +78,7 @@ #include "config.h" -struct device_head dtab; +struct device_head dtab, rmdtab; char *ident; char *env; int envmode; @@ -104,6 +105,9 @@ devopt(char *dev) return ret; } +static void rmoptall(struct opt_head *list, struct opt_head *torem); +static void rmdevall(struct device_head *dh, struct device_head *torem); + %} %% Configuration: @@ -122,7 +126,10 @@ Spec: Config_spec SEMICOLON | INCLUDE ID SEMICOLON - = { include($2, 0); }; + = { + if (incignore == 0) + include($2, 0); + }; | FILES ID SEMICOLON = { newfile($2); }; @@ -170,11 +177,11 @@ Config_spec: OPTIONS Opt_list | NOOPTION Save_id - = { rmopt(&opt, $2); } | + = { rmopt_schedule(&rmopts, $2); } | MAKEOPTIONS Mkopt_list | NOMAKEOPTION Save_id - = { rmopt(&mkopt, $2); } | + = { rmopt_schedule(&mkopt, $2); } | IDENT ID = { ident = $2; } | System_spec @@ -298,10 +305,10 @@ NoDevice: = { char *s = devopt($1); - rmopt(&opt, s); + rmopt_schedule(&rmopts, s); free(s); /* and the device part */ - rmdev($1); + rmdev_schedule(&rmdtab, $1); } ; %% @@ -317,14 +324,16 @@ int yywrap(void) { - if (found_defaults) { - if (freopen(PREFIX, "r", stdin) == NULL) - err(2, "%s", PREFIX); - yyfile = PREFIX; + if (found_defaults == 0 && incignore == 0) { + if (freopen("DEFAULTS", "r", stdin) == NULL) + return 1; + yyfile = "DEFAULTS"; yyline = 0; - found_defaults = 0; + found_defaults = 1; return 0; } + rmoptall(&opt, &rmopts); + rmdevall(&dtab, &rmdtab); return 1; } @@ -345,11 +354,11 @@ newfile(char *name) * Find a device in the list of devices. */ static struct device * -finddev(char *name) +finddev(struct device_head *dlist, char *name) { struct device *dp; - STAILQ_FOREACH(dp, &dtab, d_next) + STAILQ_FOREACH(dp, dlist, d_next) if (eq(dp->d_name, name)) return (dp); @@ -364,7 +373,7 @@ newdev(char *name) { struct device *np; - if (finddev(name)) { + if (finddev(&dtab, name)) { printf("WARNING: duplicate device `%s' encountered.\n", name); return; } @@ -375,17 +384,36 @@ newdev(char *name) } /* - * Remove a device from the list of devices. + * Schedule a device to removal. */ static void -rmdev(char *name) +rmdev_schedule(struct device_head *dh, char *name) { struct device *dp; - dp = finddev(name); - if (dp != NULL) { - STAILQ_REMOVE(&dtab, dp, device, d_next); - free(dp->d_name); + dp = calloc(1, sizeof(struct device)); + dp->d_name = strdup(name); + assert(dp->d_name != NULL); + STAILQ_INSERT_HEAD(dh, dp, d_next); +} + +/* + * Take care a devices previously scheduled for removal. + */ +static void +rmdevall(struct device_head *dh, struct device_head *torem) +{ + struct device *dp, *rdp; + + while (!STAILQ_EMPTY(torem)) { + dp = STAILQ_FIRST(torem); + STAILQ_REMOVE_HEAD(torem, d_next); + rdp = finddev(dh, dp->d_name); + if (rdp != NULL) { + STAILQ_REMOVE(dh, rdp, device, d_next); + free(rdp->d_name); + free(rdp); + } free(dp); } } @@ -413,6 +441,14 @@ newopt(struct opt_head *list, char *name, char *value) { struct opt *op; + /* + * Ignore inclusions listed explicitly for configuration files. + */ + if (eq(name, OPT_AUTOGEN)) { + incignore = 1; + return; + } + if (findopt(list, name)) { printf("WARNING: duplicate option `%s' encountered.\n", name); return; @@ -429,16 +465,35 @@ newopt(struct opt_head *list, char *name, char *value) * Remove an option from the list of options. */ static void -rmopt(struct opt_head *list, char *name) +rmopt_schedule(struct opt_head *list, char *name) { struct opt *op; - op = findopt(list, name); - if (op != NULL) { - SLIST_REMOVE(list, op, opt, op_next); - free(op->op_name); - if (op->op_value != NULL) - free(op->op_value); + op = calloc(1, sizeof(*op)); + op->op_name = ns(name); + SLIST_INSERT_HEAD(list, op, op_next); +} + +/* + * Remove all options that were scheduled for removal. + */ +static void +rmoptall(struct opt_head *list, struct opt_head *torem) +{ + struct opt *op, *rop; + + op = rop = NULL; + while (!SLIST_EMPTY(torem)) { + op = SLIST_FIRST(torem); + SLIST_REMOVE_HEAD(torem, op_next); + rop = findopt(list, op->op_name); + if (rop != NULL) { + SLIST_REMOVE(list, rop, opt, op_next); + free(rop->op_name); + if (rop->op_value != NULL) + free(rop->op_value); + free(rop); + } free(op); } } |
