chiark / gitweb /
[PATCH] get part of callout return string
[elogind.git] / namedev.c
index 24b9bc01ac2258f24fb85c67fb1a8c2fce5844cd..212d6bb68d93d5774b95ef38cf3806a8dd5a690f 100644 (file)
--- a/namedev.c
+++ b/namedev.c
@@ -21,9 +21,6 @@
  *
  */
 
-/* define this to enable parsing debugging */
-/* #define DEBUG_PARSER */
-
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
 #include "udev_version.h"
 #include "namedev.h"
 #include "libsysfs/libsysfs.h"
+#include "klibc_fixups.h"
 
-#define TYPE_LABEL     "LABEL"
-#define TYPE_NUMBER    "NUMBER"
-#define TYPE_TOPOLOGY  "TOPOLOGY"
-#define TYPE_REPLACE   "REPLACE"
-#define TYPE_CALLOUT   "CALLOUT"
-#define CALLOUT_MAXARG 8
-
-static LIST_HEAD(config_device_list);
+LIST_HEAD(config_device_list);
+LIST_HEAD(perm_device_list);
 
-static void dump_dev(struct config_device *dev)
+/* compare string with pattern (supports * ? [0-9] [!A-Z]) */
+static int strcmp_pattern(const char *p, const char *s)
 {
-       switch (dev->type) {
-       case KERNEL_NAME:
-               dbg_parse("KERNEL name='%s' ,"
-                         "owner='%s', group='%s', mode=%#o",
-                         dev->name, dev->owner, dev->group, dev->mode);
-               break;
-       case LABEL:
-               dbg_parse("LABEL name='%s', bus='%s', sysfs_file='%s', sysfs_value='%s', "
-                         "owner='%s', group='%s', mode=%#o",
-                         dev->name, dev->bus, dev->sysfs_file, dev->sysfs_value,
-                         dev->owner, dev->group, dev->mode);
-               break;
-       case NUMBER:
-               dbg_parse("NUMBER name='%s', bus='%s', id='%s', "
-                         "owner='%s', group='%s', mode=%#o",
-                         dev->name, dev->bus, dev->id,
-                         dev->owner, dev->group, dev->mode);
-               break;
-       case TOPOLOGY:
-               dbg_parse("TOPOLOGY name='%s', bus='%s', place='%s', "
-                         "owner='%s', group='%s', mode=%#o",
-                         dev->name, dev->bus, dev->place,
-                         dev->owner, dev->group, dev->mode);
-               break;
-       case REPLACE:
-               dbg_parse("REPLACE name=%s, kernel_name=%s, "
-                         "owner='%s', group='%s', mode=%#o",
-                         dev->name, dev->kernel_name,
-                         dev->owner, dev->group, dev->mode);
+       if (*s == '\0') {
+               while (*p == '*')
+                       p++;
+               return (*p != '\0');
+       }
+       switch (*p) {
+       case '[':
+               {
+                       int not = 0;
+                       p++;
+                       if (*p == '!') {
+                               not = 1;
+                               p++;
+                       }
+                       while (*p && (*p != ']')) {
+                               int match = 0;
+                               if (p[1] == '-') {
+                                       if ((*s >= *p) && (*s <= p[2]))
+                                               match = 1;
+                                       p += 3;
+                               } else {
+                                       match = (*p == *s);
+                                       p++;
+                               }
+                               if (match ^ not) {
+                                       while (*p && (*p != ']'))
+                                               p++;
+                                       return strcmp_pattern(p+1, s+1);
+                               }
+                       }
+               }
                break;
-       case CALLOUT:
-               dbg_parse("CALLOUT name='%s', program='%s', bus='%s', id='%s', "
-                         "owner='%s', group='%s', mode=%#o",
-                         dev->name, dev->exec_program, dev->bus, dev->id,
-                         dev->owner, dev->group, dev->mode);
+       case '*':
+               if (strcmp_pattern(p, s+1))
+                       return strcmp_pattern(p+1, s);
+               return 0;
+       case '\0':
+               if (*s == '\0') {
+                       return 0;
+               }
                break;
        default:
-               dbg_parse("unknown type of method");
+               if ((*p == *s) || (*p == '?'))
+                       return strcmp_pattern(p+1, s+1);
+               break;
        }
+       return 1;
 }
 
 #define copy_var(a, b, var)            \
@@ -100,7 +101,7 @@ static void dump_dev(struct config_device *dev)
        if (strlen(b->var))             \
                strcpy(a->var, b->var);
 
-static int add_dev(struct config_device *new_dev)
+int add_config_dev(struct config_device *new_dev)
 {
        struct list_head *tmp;
        struct config_device *tmp_dev;
@@ -108,26 +109,19 @@ static int add_dev(struct config_device *new_dev)
        /* update the values if we already have the device */
        list_for_each(tmp, &config_device_list) {
                struct config_device *dev = list_entry(tmp, struct config_device, node);
-               int len = strlen(new_dev->name);
-               if (new_dev->name[len-1] == '*') {
-                       len--;
-                       if (strncmp(dev->name, new_dev->name, len))
-                               continue;
-               } else {
-                       if (strcmp(dev->name, new_dev->name))
-                               continue;
-               }
-               /* the same, copy the new info into this structure */
+               if (strcmp_pattern(new_dev->name, dev->name))
+                       continue;
+               if (strncmp(dev->bus, new_dev->bus, sizeof(dev->name)))
+                       continue;
                copy_var(dev, new_dev, type);
-               copy_var(dev, new_dev, mode);
                copy_string(dev, new_dev, bus);
                copy_string(dev, new_dev, sysfs_file);
                copy_string(dev, new_dev, sysfs_value);
                copy_string(dev, new_dev, id);
                copy_string(dev, new_dev, place);
                copy_string(dev, new_dev, kernel_name);
-               copy_string(dev, new_dev, owner);
-               copy_string(dev, new_dev, group);
+               copy_string(dev, new_dev, exec_program);
+               copy_string(dev, new_dev, symlink);
                return 0;
        }
 
@@ -136,350 +130,159 @@ static int add_dev(struct config_device *new_dev)
        if (!tmp_dev)
                return -ENOMEM;
        memcpy(tmp_dev, new_dev, sizeof(*tmp_dev));
-       list_add(&tmp_dev->node, &config_device_list);
-       //dump_dev(tmp_dev);
+       list_add_tail(&tmp_dev->node, &config_device_list);
+       //dump_config_dev(tmp_dev);
        return 0;
 }
 
-static void dump_dev_list(void)
+int add_perm_dev(struct perm_device *new_dev)
 {
        struct list_head *tmp;
+       struct perm_device *tmp_dev;
 
-       list_for_each(tmp, &config_device_list) {
-               struct config_device *dev = list_entry(tmp, struct config_device, node);
-               dump_dev(dev);
+       /* update the values if we already have the device */
+       list_for_each(tmp, &perm_device_list) {
+               struct perm_device *dev = list_entry(tmp, struct perm_device, node);
+               if (strcmp_pattern(new_dev->name, dev->name))
+                       continue;
+               copy_var(dev, new_dev, mode);
+               copy_string(dev, new_dev, owner);
+               copy_string(dev, new_dev, group);
+               return 0;
        }
-}
-       
-static int get_pair(char **orig_string, char **left, char **right)
-{
-       char *temp;
-       char *string = *orig_string;
-
-       if (!string)
-               return -ENODEV;
 
-       /* eat any whitespace */
-       while (isspace(*string))
-               ++string;
-
-       /* split based on '=' */
-       temp = strsep(&string, "=");
-       *left = temp;
-       if (!string)
-               return -ENODEV;
-
-       /* take the right side and strip off the '"' */
-       while (isspace(*string))
-               ++string;
-       if (*string == '"')
-               ++string;
-       else
-               return -ENODEV;
-
-       temp = strsep(&string, "\"");
-       if (!string || *temp == '\0')
-               return -ENODEV;
-       *right = temp;
-       *orig_string = string;
-       
+       /* not found, add new structure to the perm list */
+       tmp_dev = malloc(sizeof(*tmp_dev));
+       if (!tmp_dev)
+               return -ENOMEM;
+       memcpy(tmp_dev, new_dev, sizeof(*tmp_dev));
+       list_add_tail(&tmp_dev->node, &perm_device_list);
+       //dump_perm_dev(tmp_dev);
        return 0;
 }
 
-static int get_value(const char *left, char **orig_string, char **ret_string)
+static struct perm_device *find_perm(char *name)
 {
-       int retval;
-       char *left_string;
+       struct list_head *tmp;
+       struct perm_device *perm = NULL;
 
-       retval = get_pair(orig_string, &left_string, ret_string);
-       if (retval)
-               return retval;
-       if (strcasecmp(left_string, left) != 0)
-               return -ENODEV;
-       return 0;
+       list_for_each(tmp, &perm_device_list) {
+               perm = list_entry(tmp, struct perm_device, node);
+               if (strcmp_pattern(perm->name, name))
+                       continue;
+               return perm;
+       }
+       return NULL;
 }
 
-static int namedev_init_config(void)
+static mode_t get_default_mode(struct sysfs_class_device *class_dev)
 {
-       char line[255];
-       int lineno;
-       char *temp;
-       char *temp2;
-       char *temp3;
-       FILE *fd;
-       int retval = 0;
-       struct config_device dev;
+       mode_t mode = 0600;     /* default to owner rw only */
 
-       dbg("opening %s to read as config", udev_config_filename);
-       fd = fopen(udev_config_filename, "r");
-       if (fd == NULL) {
-               dbg("can't open %s", udev_config_filename);
-               return -ENODEV;
+       if (strlen(default_mode_str) != 0) {
+               mode = strtol(default_mode_str, NULL, 8);
        }
+       return mode;
+}
 
-       /* loop through the whole file */
-       lineno = 0;
-       while (1) {
-               /* get a line */
-               temp = fgets(line, sizeof(line), fd);
-               if (temp == NULL)
-                       goto exit;
-               lineno++;
-
-               dbg_parse("read %s", temp);
-
-               /* eat the whitespace at the beginning of the line */
-               while (isspace(*temp))
-                       ++temp;
-
-               /* empty line? */
-               if (*temp == 0x00)
-                       continue;
-
-               /* see if this is a comment */
-               if (*temp == COMMENT_CHARACTER)
-                       continue;
-
-               memset(&dev, 0x00, sizeof(struct config_device));
-
-               /* parse the line */
-               temp2 = strsep(&temp, ",");
-               if (strcasecmp(temp2, TYPE_LABEL) == 0) {
-                       /* label type */
-                       dev.type = LABEL;
-
-                       /* BUS="bus" */
-                       retval = get_value("BUS", &temp, &temp3);
-                       if (retval)
-                               break;
-                       strfieldcpy(dev.bus, temp3);
-
-                       /* file="value" */
-                       temp2 = strsep(&temp, ",");
-                       retval = get_pair(&temp, &temp2, &temp3);
-                       if (retval)
-                               break;
-                       strfieldcpy(dev.sysfs_file, temp2);
-                       strfieldcpy(dev.sysfs_value, temp3);
-
-                       /* NAME="new_name" */
-                       temp2 = strsep(&temp, ",");
-                       retval = get_value("NAME", &temp, &temp3);
-                       if (retval)
-                               break;
-                       strfieldcpy(dev.name, temp3);
-
-                       dbg_parse("LABEL name='%s', bus='%s', "
-                                 "sysfs_file='%s', sysfs_value='%s'", 
-                                 dev.name, dev.bus, dev.sysfs_file, 
-                                 dev.sysfs_value);
-               }
-
-               if (strcasecmp(temp2, TYPE_NUMBER) == 0) {
-                       /* number type */
-                       dev.type = NUMBER;
-
-                       /* BUS="bus" */
-                       retval = get_value("BUS", &temp, &temp3);
-                       if (retval)
-                               break;
-                       strfieldcpy(dev.bus, temp3);
-
-                       /* ID="id" */
-                       temp2 = strsep(&temp, ",");
-                       retval = get_value("ID", &temp, &temp3);
-                       if (retval)
-                               break;
-                       strfieldcpy(dev.id, temp3);
-
-                       /* NAME="new_name" */
-                       temp2 = strsep(&temp, ",");
-                       retval = get_value("NAME", &temp, &temp3);
-                       if (retval)
-                               break;
-                       strfieldcpy(dev.name, temp3);
-
-                       dbg_parse("NUMBER name='%s', bus='%s', id='%s'",
-                                 dev.name, dev.bus, dev.id);
-               }
+static void build_kernel_number(struct sysfs_class_device *class_dev, struct udevice *udev)
+{
+       char *dig;
+
+       /* FIXME, figure out how to handle stuff like sdaj which will not work right now. */
+       dig = class_dev->name + strlen(class_dev->name);
+       while (isdigit(*(dig-1)))
+               dig--;
+       strfieldcpy(udev->kernel_number, dig);
+       dbg("kernel_number='%s'", udev->kernel_number);
+}
 
-               if (strcasecmp(temp2, TYPE_TOPOLOGY) == 0) {
-                       /* number type */
-                       dev.type = TOPOLOGY;
+static void apply_format(struct udevice *udev, unsigned char *string)
+{
+       char name[NAME_SIZE];
+       char temp[NAME_SIZE];
+       char *tail;
+       char *pos;
+       char *pos2;
+       char *pos3;
+       int num;
 
-                       /* BUS="bus" */
-                       retval = get_value("BUS", &temp, &temp3);
-                       if (retval)
-                               break;
-                       strfieldcpy(dev.bus, temp3);
+       while (1) {
+               num = 0;
+               pos = strchr(string, '%');
 
-                       /* PLACE="place" */
-                       temp2 = strsep(&temp, ",");
-                       retval = get_value("PLACE", &temp, &temp3);
-                       if (retval)
-                               break;
-                       strfieldcpy(dev.place, temp3);
+               if (pos) {
+                       *pos = '\0';
+                       tail = pos+1;
+                       if (isdigit(tail[0])) {
+                               num = (int) strtoul(&pos[1], &tail, 10);
+                               if (tail == NULL) {
+                                       dbg("format parsing error '%s'", pos+1);
+                                       break;
+                               }
+                       }
+                       strfieldcpy(name, tail+1);
 
-                       /* NAME="new_name" */
-                       temp2 = strsep(&temp, ",");
-                       retval = get_value("NAME", &temp, &temp3);
-                       if (retval)
+                       switch (tail[0]) {
+                       case 'b':
+                               if (strlen(udev->bus_id) == 0)
+                                       break;
+                               strcat(pos, udev->bus_id);
+                               dbg("substitute bus_id '%s'", udev->bus_id);
                                break;
-                       strfieldcpy(dev.name, temp3);
-
-                       dbg_parse("TOPOLOGY name='%s', bus='%s', place='%s'",
-                                 dev.name, dev.bus, dev.place);
-               }
-
-               if (strcasecmp(temp2, TYPE_REPLACE) == 0) {
-                       /* number type */
-                       dev.type = REPLACE;
-
-                       /* KERNEL="kernel_name" */
-                       retval = get_value("KERNEL", &temp, &temp3);
-                       if (retval)
+                       case 'n':
+                               if (strlen(udev->kernel_number) == 0)
+                                       break;
+                               strcat(pos, udev->kernel_number);
+                               dbg("substitute kernel number '%s'", udev->kernel_number);
                                break;
-                       strfieldcpy(dev.kernel_name, temp3);
-
-                       /* NAME="new_name" */
-                       temp2 = strsep(&temp, ",");
-                       retval = get_value("NAME", &temp, &temp3);
-                       if (retval)
+                       case 'D':
+                               if (strlen(udev->kernel_number) == 0) {
+                                       strcat(pos, "disc");
+                                       break;
+                               }
+                               strcat(pos, "part");
+                               strcat(pos, udev->kernel_number);
+                               dbg("substitute kernel number '%s'", udev->kernel_number);
                                break;
-                       strfieldcpy(dev.name, temp3);
-                       dbg_parse("REPLACE name='%s', kernel_name='%s'",
-                                 dev.name, dev.kernel_name);
-               }
-               if (strcasecmp(temp2, TYPE_CALLOUT) == 0) {
-                       /* number type */
-                       dev.type = CALLOUT;
-
-                       /* BUS="bus" */
-                       retval = get_value("BUS", &temp, &temp3);
-                       if (retval)
+                       case 'm':
+                               sprintf(pos, "%u", udev->minor);
+                               dbg("substitute minor number '%u'", udev->minor);
                                break;
-                       strfieldcpy(dev.bus, temp3);
-
-                       /* PROGRAM="executable" */
-                       temp2 = strsep(&temp, ",");
-                       retval = get_value("PROGRAM", &temp, &temp3);
-                       if (retval)
+                       case 'M':
+                               sprintf(pos, "%u", udev->major);
+                               dbg("substitute major number '%u'", udev->major);
                                break;
-                       strfieldcpy(dev.exec_program, temp3);
-
-                       /* ID="id" */
-                       temp2 = strsep(&temp, ",");
-                       retval = get_value("ID", &temp, &temp3);
-                       if (retval)
+                       case 'c':
+                               if (strlen(udev->callout_value) == 0)
+                                       break;
+                               if (num) {
+                                       /* get part of return string */
+                                       strncpy(temp, udev->callout_value, sizeof(temp));
+                                       pos2 = temp;
+                                       while (num) {
+                                               num--;
+                                               pos3 = strsep(&pos2, " ");
+                                               if (pos3 == NULL) {
+                                                       dbg("requested part of callout string not found");
+                                                       break;
+                                               }
+                                       }
+                                       strcat(pos, pos3);
+                                       dbg("substitute partial callout output '%s'", pos3);
+                               } else {
+                                       strcat(pos, udev->callout_value);
+                                       dbg("substitute callout output '%s'", udev->callout_value);
+                               }
                                break;
-                       strfieldcpy(dev.id, temp3);
-
-                       /* NAME="new_name" */
-                       temp2 = strsep(&temp, ",");
-                       retval = get_value("NAME", &temp, &temp3);
-                       if (retval)
+                       default:
+                               dbg("unknown substitution type '%%%c'", pos[1]);
                                break;
-                       strfieldcpy(dev.name, temp3);
-                       dbg_parse("CALLOUT name='%s', program='%s'",
-                                 dev.name, dev.exec_program);
-               }
-
-               retval = add_dev(&dev);
-               if (retval) {
-                       dbg("add_dev returned with error %d", retval);
-                       goto exit;
-               }
-       }
-       dbg_parse("%s:%d:%Zd: error parsing '%s'", udev_config_filename,
-                 lineno, temp - line, temp);
-exit:
-       fclose(fd);
-       return retval;
-}      
-
-
-static int namedev_init_permissions(void)
-{
-       char line[255];
-       char *temp;
-       char *temp2;
-       FILE *fd;
-       int retval = 0;
-       struct config_device dev;
-
-       dbg("opening %s to read as permissions config", udev_config_permission_filename);
-       fd = fopen(udev_config_permission_filename, "r");
-       if (fd == NULL) {
-               dbg("can't open %s", udev_config_permission_filename);
-               return -ENODEV;
-       }
-
-       /* loop through the whole file */
-       while (1) {
-               /* get a line */
-               temp = fgets(line, sizeof(line), fd);
-               if (temp == NULL)
+                       }
+                       strcat(string, name);
+               } else
                        break;
-
-               dbg_parse("read %s", temp);
-
-               /* eat the whitespace at the beginning of the line */
-               while (isspace(*temp))
-                       ++temp;
-
-               /* empty line? */
-               if (*temp == 0x00)
-                       continue;
-
-               /* see if this is a comment */
-               if (*temp == COMMENT_CHARACTER)
-                       continue;
-
-               memset(&dev, 0x00, sizeof(dev));
-
-               /* parse the line */
-               temp2 = strsep(&temp, ":");
-               if (!temp2) {
-                       dbg("cannot parse line: %s", line);
-                       continue;
-               }
-               strncpy(dev.name, temp2, sizeof(dev.name));
-
-               temp2 = strsep(&temp, ":");
-               if (!temp2) {
-                       dbg("cannot parse line: %s", line);
-                       continue;
-               }
-               strncpy(dev.owner, temp2, sizeof(dev.owner));
-
-               temp2 = strsep(&temp, ":");
-               if (!temp2) {
-                       dbg("cannot parse line: %s", line);
-                       continue;
-               }
-               strncpy(dev.group, temp2, sizeof(dev.owner));
-
-               dev.mode = strtol(temp, NULL, 8);
-
-               dbg_parse("name='%s', owner='%s', group='%s', mode=%#o",
-                         dev.name, dev.owner, dev.group,
-                         dev.mode);
-               retval = add_dev(&dev);
-               if (retval) {
-                       dbg("add_dev returned with error %d", retval);
-                       goto exit;
-               }
        }
-
-exit:
-       fclose(fd);
-       return retval;
-}      
-
-static mode_t get_default_mode(struct sysfs_class_device *class_dev)
-{
-       /* just default everyone to rw for the world! */
-       return 0666;
 }
 
 
@@ -492,7 +295,7 @@ static int exec_callout(struct config_device *dev, char *value, int len)
        pid_t pid;
        int value_set = 0;
        char buffer[256];
-       char *arg;
+       char *pos;
        char *args[CALLOUT_MAXARG];
        int i;
 
@@ -514,14 +317,14 @@ static int exec_callout(struct config_device *dev, char *value, int len)
                dup(fds[1]);    /* dup write side of pipe to STDOUT */
                if (strchr(dev->exec_program, ' ')) {
                        /* callout with arguments */
-                       arg = dev->exec_program;
+                       pos = dev->exec_program;
                        for (i=0; i < CALLOUT_MAXARG-1; i++) {
-                               args[i] = strsep(&arg, " ");
+                               args[i] = strsep(&pos, " ");
                                if (args[i] == NULL)
                                        break;
                        }
                        if (args[i]) {
-                               dbg("to many args - %d", i);
+                               dbg("too many args - %d", i);
                                args[i] = NULL;
                        }
                        retval = execve(args[0], args, main_envp);
@@ -543,7 +346,7 @@ static int exec_callout(struct config_device *dev, char *value, int len)
                                break;
                        buffer[res] = '\0';
                        if (res > len) {
-                               dbg("callout len %d too short\n", len);
+                               dbg("callout len %d too short", len);
                                retval = -1;
                        }
                        if (value_set) {
@@ -552,9 +355,12 @@ static int exec_callout(struct config_device *dev, char *value, int len)
                        } else {
                                value_set = 1;
                                strncpy(value, buffer, len);
+                               pos = value + strlen(value)-1;
+                               if (pos[0] == '\n')
+                               pos[0] = '\0';
+                               dbg("callout returned '%s'", value);
                        }
                }
-               dbg("callout returned '%s'", value);
                close(fds[0]);
                res = wait(&status);
                if (res < 0) {
@@ -572,31 +378,32 @@ static int exec_callout(struct config_device *dev, char *value, int len)
        return retval;
 }
 
-static int do_callout(struct sysfs_class_device *class_dev, struct udevice *udev)
+static int do_callout(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
 {
        struct config_device *dev;
        struct list_head *tmp;
-       char value[ID_SIZE];
 
        list_for_each(tmp, &config_device_list) {
                dev = list_entry(tmp, struct config_device, node);
                if (dev->type != CALLOUT)
                        continue;
 
-               if (exec_callout(dev, value, sizeof(value)))
+               if (sysfs_device) {
+                       dbg("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
+                       if (strcasecmp(dev->bus, sysfs_device->bus) != 0)
+                               continue;
+               }
+
+               /* substitute anything that needs to be in the program name */
+               apply_format(udev, dev->exec_program);
+               if (exec_callout(dev, udev->callout_value, NAME_SIZE))
                        continue;
-               if (strncmp(value, dev->id, sizeof(value)) != 0)
+               if (strcmp_pattern(dev->id, udev->callout_value) != 0)
                        continue;
                strfieldcpy(udev->name, dev->name);
-               if (dev->mode != 0) {
-                       udev->mode = dev->mode;
-                       strfieldcpy(udev->owner, dev->owner);
-                       strfieldcpy(udev->group, dev->group);
-               }
-               dbg_parse("callout returned matching value '%s', '%s' becomes '%s'"
-                         " - owner='%s', group='%s', mode =%#o",
-                         dev->id, class_dev->name, udev->name,
-                         dev->owner, dev->group, dev->mode);
+               strfieldcpy(udev->symlink, dev->symlink);
+               dbg("callout returned matching value '%s', '%s' becomes '%s'",
+                   dev->id, class_dev->name, udev->name);
                return 0;
        }
        return -ENODEV;
@@ -607,13 +414,20 @@ static int do_label(struct sysfs_class_device *class_dev, struct udevice *udev,
        struct sysfs_attribute *tmpattr = NULL;
        struct config_device *dev;
        struct list_head *tmp;
+       char *c;
 
        list_for_each(tmp, &config_device_list) {
                dev = list_entry(tmp, struct config_device, node);
                if (dev->type != LABEL)
                        continue;
 
-               dbg_parse("look for device attribute '%s'", dev->sysfs_file);
+               if (sysfs_device) {
+                       dbg("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
+                       if (strcasecmp(dev->bus, sysfs_device->bus) != 0)
+                               continue;
+               }
+
+               dbg("look for device attribute '%s'", dev->sysfs_file);
                /* try to find the attribute in the class device directory */
                tmpattr = sysfs_get_classdev_attr(class_dev, dev->sysfs_file);
                if (tmpattr)
@@ -629,22 +443,18 @@ static int do_label(struct sysfs_class_device *class_dev, struct udevice *udev,
                continue;
 
 label_found:
-               tmpattr->value[strlen(tmpattr->value)-1] = 0x00;
-               dbg_parse("compare attribute '%s' value '%s' with '%s'",
+               c = tmpattr->value + strlen(tmpattr->value)-1;
+               if (*c == '\n')
+                       *c = 0x00;
+               dbg("compare attribute '%s' value '%s' with '%s'",
                          dev->sysfs_file, tmpattr->value, dev->sysfs_value);
-               if (strcmp(dev->sysfs_value, tmpattr->value) != 0)
+               if (strcmp_pattern(dev->sysfs_value, tmpattr->value) != 0)
                        continue;
 
                strfieldcpy(udev->name, dev->name);
-               if (dev->mode != 0) {
-                       udev->mode = dev->mode;
-                       strfieldcpy(udev->owner, dev->owner);
-                       strfieldcpy(udev->group, dev->group);
-               }
-               dbg_parse("found matching attribute '%s', '%s' becomes '%s' "
-                         "- owner='%s', group='%s', mode=%#o",
-                         dev->sysfs_file, class_dev->name, udev->name,
-                         dev->owner, dev->group, dev->mode);
+               strfieldcpy(udev->symlink, dev->symlink);
+               dbg("found matching attribute '%s', '%s' becomes '%s' ",
+                   dev->sysfs_file, class_dev->name, udev->name);
 
                return 0;
        }
@@ -668,37 +478,34 @@ static int do_number(struct sysfs_class_device *class_dev, struct udevice *udev,
                if (dev->type != NUMBER)
                        continue;
 
+               dbg("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
+               if (strcasecmp(dev->bus, sysfs_device->bus) != 0)
+                       continue;
+
                found = 0;
                strfieldcpy(path, sysfs_device->path);
                temp = strrchr(path, '/');
-               dbg_parse("search '%s' in '%s', path='%s'", dev->id, temp, path);
+               dbg("search '%s' in '%s', path='%s'", dev->id, temp, path);
                if (strstr(temp, dev->id) != NULL) {
                        found = 1;
                } else {
                        *temp = 0x00;
                        temp = strrchr(path, '/');
-                       dbg_parse("search '%s' in '%s', path='%s'", dev->id, temp, path);
+                       dbg("search '%s' in '%s', path='%s'", dev->id, temp, path);
                        if (strstr(temp, dev->id) != NULL)
                                found = 1;
                }
                if (!found)
                        continue;
                strfieldcpy(udev->name, dev->name);
-               if (dev->mode != 0) {
-                       udev->mode = dev->mode;
-                       strfieldcpy(udev->owner, dev->owner);
-                       strfieldcpy(udev->group, dev->group);
-               }
-               dbg_parse("found matching id '%s', '%s' becomes '%s'"
-                         " - owner='%s', group ='%s', mode=%#o",
-                         dev->id, class_dev->name, udev->name,
-                         dev->owner, dev->group, dev->mode);
+               strfieldcpy(udev->symlink, dev->symlink);
+               dbg("found matching id '%s', '%s' becomes '%s'",
+                   dev->id, class_dev->name, udev->name);
                return 0;
        }
        return -ENODEV;
 }
 
-
 static int do_topology(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
 {
        struct config_device *dev;
@@ -716,16 +523,20 @@ static int do_topology(struct sysfs_class_device *class_dev, struct udevice *ude
                if (dev->type != TOPOLOGY)
                        continue;
 
+               dbg("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
+               if (strcasecmp(dev->bus, sysfs_device->bus) != 0)
+                       continue;
+
                found = 0;
                strfieldcpy(path, sysfs_device->path);
                temp = strrchr(path, '/');
-               dbg_parse("search '%s' in '%s', path='%s'", dev->place, temp, path);
+               dbg("search '%s' in '%s', path='%s'", dev->place, temp, path);
                if (strstr(temp, dev->place) != NULL) {
                        found = 1;
                } else {
                        *temp = 0x00;
                        temp = strrchr(path, '/');
-                       dbg_parse("search '%s' in '%s', path='%s'", dev->place, temp, path);
+                       dbg("search '%s' in '%s', path='%s'", dev->place, temp, path);
                        if (strstr(temp, dev->place) != NULL)
                                found = 1;
                }
@@ -733,21 +544,15 @@ static int do_topology(struct sysfs_class_device *class_dev, struct udevice *ude
                        continue;
 
                strfieldcpy(udev->name, dev->name);
-               if (dev->mode != 0) {
-                       udev->mode = dev->mode;
-                       strfieldcpy(udev->owner, dev->owner);
-                       strfieldcpy(udev->group, dev->group);
-               }
-               dbg_parse("found matching place '%s', '%s' becomes '%s'"
-                         " - owner='%s', group ='%s', mode=%#o",
-                         dev->place, class_dev->name, udev->name,
-                         dev->owner, dev->group, dev->mode);
+               strfieldcpy(udev->symlink, dev->symlink);
+               dbg("found matching place '%s', '%s' becomes '%s'",
+                   dev->place, class_dev->name, udev->name);
                return 0;
        }
        return -ENODEV;
 }
 
-static int do_replace(struct sysfs_class_device *class_dev, struct udevice *udev)
+static int do_replace(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
 {
        struct config_device *dev;
        struct list_head *tmp;
@@ -757,20 +562,13 @@ static int do_replace(struct sysfs_class_device *class_dev, struct udevice *udev
                if (dev->type != REPLACE)
                        continue;
 
-               dbg_parse("compare name '%s' with '%s'",
-                         dev->kernel_name, dev->name);
-               if (strcmp(dev->kernel_name, class_dev->name) != 0)
+               dbg("compare name '%s' with '%s'", dev->kernel_name, class_dev->name);
+               if (strcmp_pattern(dev->kernel_name, class_dev->name) != 0)
                        continue;
 
                strfieldcpy(udev->name, dev->name);
-               if (dev->mode != 0) {
-                       udev->mode = dev->mode;
-                       strfieldcpy(udev->owner, dev->owner);
-                       strfieldcpy(udev->group, dev->group);
-               }
-               dbg_parse("found name, '%s' becomes '%s' - owner='%s', group='%s', mode = %#o",
-                         dev->kernel_name, udev->name, 
-                         dev->owner, dev->group, dev->mode);
+               strfieldcpy(udev->symlink, dev->symlink);
+               dbg("found name, '%s' becomes '%s'", dev->kernel_name, udev->name);
                
                return 0;
        }
@@ -779,80 +577,56 @@ static int do_replace(struct sysfs_class_device *class_dev, struct udevice *udev
 
 static void do_kernelname(struct sysfs_class_device *class_dev, struct udevice *udev)
 {
-       struct config_device *dev;
-       struct list_head *tmp;
-       int len;
-
+       /* heh, this is pretty simple... */
        strfieldcpy(udev->name, class_dev->name);
-       list_for_each(tmp, &config_device_list) {
-               dev = list_entry(tmp, struct config_device, node);
-               len = strlen(dev->name);
-               if (dev->name[len-1] == '*') {
-                       len--;
-                       if (strncmp(dev->name, class_dev->name, len))
-                               continue;
-               } else {
-                       if (strcmp(dev->name, class_dev->name))
-                               continue;
-               }
-               if (dev->mode != 0) {
-                       dbg_parse("found permissions for '%s'", class_dev->name);
-                       udev->mode = dev->mode;
-                       strfieldcpy(udev->owner, dev->owner);
-                       strfieldcpy(udev->group, dev->group);
-               }
-       }
 }
 
-static int get_attr(struct sysfs_class_device *class_dev, struct udevice *udev)
+int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *udev)
 {
        struct sysfs_device *sysfs_device = NULL;
        struct sysfs_class_device *class_dev_parent = NULL;
        int retval = 0;
-       char *temp = NULL;
+       struct perm_device *perm;
 
        udev->mode = 0;
 
        /* find the sysfs_device for this class device */
        /* Wouldn't it really be nice if libsysfs could do this for us? */
-       if (class_dev->sysdevice) {
-               sysfs_device = class_dev->sysdevice;
-       } else {
+       sysfs_device = sysfs_get_classdev_device(class_dev);
+       if (sysfs_device == NULL) {
                /* bah, let's go backwards up a level to see if the device is there,
                 * as block partitions don't point to the physical device.  Need to fix that
                 * up in the kernel...
                 */
-               if (strstr(class_dev->path, "block")) {
-                       dbg_parse("looking at block device...");
+               if (strcmp(class_dev->classname, SYSFS_BLOCK_NAME) == 0) {
+                       dbg("looking at block device");
                        if (isdigit(class_dev->path[strlen(class_dev->path)-1])) {
-                               char path[SYSFS_PATH_MAX];
-
-                               dbg_parse("really is a partition...");
-                               strfieldcpy(path, class_dev->path);
-                               temp = strrchr(path, '/');
-                               *temp = 0x00;
-                               dbg_parse("looking for a class device at '%s'", path);
-                               class_dev_parent = sysfs_open_class_device(path);
+                               dbg("really is a partition");
+                               class_dev_parent = sysfs_get_classdev_parent
+                                                                  (class_dev);
                                if (class_dev_parent == NULL) {
-                                       dbg("sysfs_open_class_device at '%s' failed", path);
+                                       dbg("sysfs_get_classdev_parent for class device '%s' failed", class_dev->name);
                                } else {
-                                       dbg_parse("class_dev_parent->name=%s", class_dev_parent->name);
-                                       if (class_dev_parent->sysdevice)
-                                               sysfs_device = class_dev_parent->sysdevice;
+                                       dbg("class_dev_parent->name='%s'", class_dev_parent->name);
+                                       sysfs_device = sysfs_get_classdev_device(class_dev_parent);
                                }
                        }
                }
        }
-               
+
        if (sysfs_device) {
-               dbg_parse("sysfs_device->path='%s'", sysfs_device->path);
-               dbg_parse("sysfs_device->bus_id='%s'", sysfs_device->bus_id);
+               dbg("sysfs_device->path='%s'", sysfs_device->path);
+               dbg("sysfs_device->bus_id='%s'", sysfs_device->bus_id);
+               dbg("sysfs_device->bus='%s'", sysfs_device->bus);
+               strfieldcpy(udev->bus_id, sysfs_device->bus_id);
        } else {
-               dbg_parse("class_dev->name = '%s'", class_dev->name);
+               dbg("class_dev->name = '%s'", class_dev->name);
        }
 
+       build_kernel_number(class_dev, udev);
+
        /* rules are looked at in priority order */
-       retval = do_callout(class_dev, udev);
+       retval = do_callout(class_dev, udev, sysfs_device);
        if (retval == 0)
                goto found;
 
@@ -868,7 +642,7 @@ static int get_attr(struct sysfs_class_device *class_dev, struct udevice *udev)
        if (retval == 0)
                goto found;
 
-       retval = do_replace(class_dev, udev);
+       retval = do_replace(class_dev, udev, sysfs_device);
        if (retval == 0)
                goto found;
 
@@ -876,76 +650,33 @@ static int get_attr(struct sysfs_class_device *class_dev, struct udevice *udev)
        goto done;
 
 found:
-       /* substitute placeholder in NAME  */
-       while (1) {
-               char *pos = strchr(udev->name, '%');
-               char *dig;
-               char name[NAME_SIZE];
-               if (pos) {
-                       strfieldcpy(name, pos+2);
-                       *pos = 0x00;
-                       switch (pos[1]) {
-                       case 'b':
-                               if (!sysfs_device)
-                                       break;
-                               strcat(udev->name, sysfs_device->bus_id);
-                               dbg("bus_id inserted: %s", 
-                                               sysfs_device->bus_id);
-                               break;
-                       case 'n':
-                               dig = class_dev->name + strlen(class_dev->name);
-                               while (isdigit(*(dig-1)))
-                                       dig--;
-                               strcat(udev->name, dig);
-                               dbg("substitute kernel number '%s'", dig);
-                               break;
-                       case 'm':
-                               sprintf(pos, "%u", udev->minor);
-                               dbg("substitute minor number '%u'", udev->minor);
-                               break;
-                       case 'M':
-                               sprintf(pos, "%u", udev->major);
-                               dbg("substitute major number '%u'", udev->major);
-                               break;
-                       default:
-                               dbg("unknown substitution type '%%%c'", pos[1]);
-                               break;
-                       }
-                       strcat(udev->name, name);
-               } else
-                       break;
-       }
+       /* substitute placeholder */
+       apply_format(udev, udev->name);
+       apply_format(udev, udev->symlink);
 
 done:
-       /* mode was never set above */
-       if (!udev->mode) {
+       perm = find_perm(udev->name);
+       if (perm) {
+               udev->mode = perm->mode;
+               strfieldcpy(udev->owner, perm->owner);
+               strfieldcpy(udev->group, perm->group);
+       } else {
+               /* no matching perms found :( */
                udev->mode = get_default_mode(class_dev);
                udev->owner[0] = 0x00;
                udev->group[0] = 0x00;
        }
-
-       if (class_dev_parent)
-               sysfs_close_class_device(class_dev_parent);
+       dbg("name, '%s' is going to have owner='%s', group='%s', mode = %#o",
+           udev->name, udev->owner, udev->group, udev->mode);
 
        return 0;
 }
 
-int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *dev)
-{
-       int retval;
-
-       retval = get_attr(class_dev, dev);
-       if (retval)
-               dbg("get_attr failed");
-
-       return retval;
-}
-
 int namedev_init(void)
 {
        int retval;
-       
-       retval = namedev_init_config();
+
+       retval = namedev_init_rules();
        if (retval)
                return retval;
 
@@ -953,8 +684,7 @@ int namedev_init(void)
        if (retval)
                return retval;
 
-       dump_dev_list();
+       dump_config_dev_list();
+       dump_perm_dev_list();
        return retval;
 }
-
-