*
*/
-/* define this to enable parsing debugging */
-/* #define DEBUG_PARSER */
-
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/wait.h>
+#include <sys/stat.h>
#include "list.h"
#include "udev.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) \
if (strlen(b->var)) \
strcpy(a->var, b->var);
-static int add_dev(struct config_device *new_dev)
+int add_perm_dev(struct perm_device *new_dev)
{
struct list_head *tmp;
- struct config_device *tmp_dev;
+ struct perm_device *tmp_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 */
- copy_var(dev, new_dev, type);
+ 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, 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);
return 0;
}
- /* not found, add new structure to the device list */
+ /* 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(&tmp_dev->node, &config_device_list);
- //dump_dev(tmp_dev);
+ list_add_tail(&tmp_dev->node, &perm_device_list);
+ //dump_perm_dev(tmp_dev);
return 0;
}
-static void dump_dev_list(void)
+static struct perm_device *find_perm(char *name)
{
struct list_head *tmp;
+ struct perm_device *perm = NULL;
- list_for_each(tmp, &config_device_list) {
- struct config_device *dev = list_entry(tmp, struct config_device, node);
- dump_dev(dev);
+ list_for_each(tmp, &perm_device_list) {
+ perm = list_entry(tmp, struct perm_device, node);
+ if (strcmp_pattern(perm->name, name))
+ continue;
+ return perm;
}
-}
-
-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;
-
- return 0;
+ return NULL;
}
-static int get_value(const char *left, char **orig_string, char **ret_string)
+static mode_t get_default_mode(struct sysfs_class_device *class_dev)
{
- int retval;
- char *left_string;
+ mode_t mode = 0600; /* default to owner rw only */
- retval = get_pair(orig_string, &left_string, ret_string);
- if (retval)
- return retval;
- if (strcasecmp(left_string, left) != 0)
- return -ENODEV;
- return 0;
+ if (strlen(default_mode_str) != 0) {
+ mode = strtol(default_mode_str, NULL, 8);
+ }
+ return mode;
}
-static int namedev_init_config(void)
+static void apply_format(struct udevice *udev, unsigned char *string)
{
- char line[255];
- int lineno;
- char *temp;
- char *temp2;
- char *temp3;
- FILE *fd;
- int retval = 0;
- struct config_device dev;
-
- 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;
- }
+ char name[NAME_SIZE];
+ char temp[NAME_SIZE];
+ char *tail;
+ char *pos;
+ char *pos2;
+ char *pos3;
+ int num;
- /* 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);
- }
+ num = 0;
+ pos = strchr(string, '%');
- if (strcasecmp(temp2, TYPE_TOPOLOGY) == 0) {
- /* number type */
- dev.type = TOPOLOGY;
-
- /* BUS="bus" */
- retval = get_value("BUS", &temp, &temp3);
- if (retval)
- break;
- strfieldcpy(dev.bus, 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);
- /* PLACE="place" */
- temp2 = strsep(&temp, ",");
- retval = get_value("PLACE", &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.place, temp3);
-
- /* NAME="new_name" */
- temp2 = strsep(&temp, ",");
- retval = get_value("NAME", &temp, &temp3);
- if (retval)
+ case 'k':
+ if (strlen(udev->kernel_name) == 0)
+ break;
+ strcat(pos, udev->kernel_name);
+ dbg("substitute kernel name '%s'", udev->kernel_name);
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;
- }
+ }
+ strcat(string, name);
+ } else
+ break;
}
- 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)
+static struct bus_file {
+ char *bus;
+ char *file;
+} bus_files[] = {
+ { .bus = "scsi", .file = "vendor" },
+ { .bus = "usb", .file = "idVendor" },
+ {}
+};
+
+#define SECONDS_TO_WAIT_FOR_FILE 10
+static void wait_for_device_to_initialize(struct sysfs_device *sysfs_device)
{
- char line[255];
- char *temp;
- char *temp2;
- FILE *fd;
- int retval = 0;
- struct config_device dev;
+ /* sleep until we see the file for this specific bus type show up this
+ * is needed because we can easily out-run the kernel in looking for
+ * these files before the paticular subsystem has created them in the
+ * sysfs tree properly.
+ *
+ * And people thought that the /sbin/hotplug event system was going to
+ * be slow, poo on you for arguing that before even testing it...
+ */
+ struct bus_file *b = &bus_files[0];
+ struct sysfs_attribute *tmpattr;
+ int loop;
- 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)
+ if (b->bus == NULL)
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);
+ if (strcmp(sysfs_device->bus, b->bus) == 0) {
+ tmpattr = NULL;
+ loop = SECONDS_TO_WAIT_FOR_FILE;
+ while (loop--) {
+ dbg("looking for file '%s' on bus '%s'", b->file, b->bus);
+ tmpattr = sysfs_get_device_attr(sysfs_device, b->file);
+ if (tmpattr) {
+ /* found it! */
+ goto exit;
+ }
+ /* sleep to give the kernel a chance to create the file */
+ sleep(1);
+ }
+ dbg("Timed out waiting for '%s' file, continuing on anyway...", b->file);
goto exit;
}
+ b++;
}
-
+ dbg("Did not find bus type '%s' on list of bus_id_files, contact greg@kroah.com", sysfs_device->bus);
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;
+ return; /* here to prevent compiler warning... */
}
-
static int exec_callout(struct config_device *dev, char *value, int len)
{
int retval;
pid_t pid;
int value_set = 0;
char buffer[256];
- char *arg;
+ char *pos;
char *args[CALLOUT_MAXARG];
int i;
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);
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) {
} 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) {
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;
}
-static int do_label(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
+static int match_pair(struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device, struct sysfs_pair *pair)
{
struct sysfs_attribute *tmpattr = NULL;
+ char *c;
+
+ if ((pair == NULL) || (pair->file[0] == '\0') || (pair->value == '\0'))
+ return -ENODEV;
+
+ dbg("look for device attribute '%s'", pair->file);
+ /* try to find the attribute in the class device directory */
+ tmpattr = sysfs_get_classdev_attr(class_dev, pair->file);
+ if (tmpattr)
+ goto label_found;
+
+ /* look in the class device directory if present */
+ if (sysfs_device) {
+ tmpattr = sysfs_get_device_attr(sysfs_device, pair->file);
+ if (tmpattr)
+ goto label_found;
+ }
+
+ return -ENODEV;
+
+label_found:
+ c = tmpattr->value + strlen(tmpattr->value)-1;
+ if (*c == '\n')
+ *c = 0x00;
+ dbg("compare attribute '%s' value '%s' with '%s'",
+ pair->file, tmpattr->value, pair->value);
+ if (strcmp_pattern(pair->value, tmpattr->value) != 0)
+ return -ENODEV;
+
+ dbg("found matching attribute '%s' with value '%s'",
+ pair->file, pair->value);
+ return 0;
+}
+
+static int do_label(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
+{
+ struct sysfs_pair *pair;
struct config_device *dev;
struct list_head *tmp;
+ int i;
+ int match;
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);
- /* try to find the attribute in the class device directory */
- tmpattr = sysfs_get_classdev_attr(class_dev, dev->sysfs_file);
- if (tmpattr)
- goto label_found;
-
- /* look in the class device directory if present */
if (sysfs_device) {
- tmpattr = sysfs_get_device_attr(sysfs_device, dev->sysfs_file);
- if (tmpattr)
- goto label_found;
+ dbg("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
+ if (strcasecmp(dev->bus, sysfs_device->bus) != 0)
+ continue;
}
- continue;
-
-label_found:
- tmpattr->value[strlen(tmpattr->value)-1] = 0x00;
- dbg_parse("compare attribute '%s' value '%s' with '%s'",
- dev->sysfs_file, tmpattr->value, dev->sysfs_value);
- if (strcmp(dev->sysfs_value, tmpattr->value) != 0)
+ match = 1;
+ for (i = 0; i < MAX_SYSFS_PAIRS; ++i) {
+ pair = &dev->sysfs_pair[i];
+ if ((pair->file[0] == '\0') || (pair->value[0] == '\0'))
+ break;
+ if (match_pair(class_dev, sysfs_device, pair) != 0) {
+ match = 0;
+ break;
+ }
+ }
+ if (match == 0)
continue;
+ /* found match */
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' becomes '%s' ",
+ class_dev->name, udev->name);
return 0;
}
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;
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;
}
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;
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;
}
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)
+static struct sysfs_device *get_sysfs_device(struct sysfs_class_device *class_dev)
{
- struct sysfs_device *sysfs_device = NULL;
- struct sysfs_class_device *class_dev_parent = NULL;
- int retval = 0;
- char *temp = NULL;
+ struct sysfs_device *sysfs_device;
+ struct sysfs_class_device *class_dev_parent;
+ int loop;
+
+ /* FIXME!!! */
+ /* This is needed here as we can easily out-race the placement of the
+ * device symlink by the kernel. The call to sleep(1); will be removed
+ * once libsysfs can be queried for sysfs_get_classdev_device()
+ * multiple times and have it return the proper information when the
+ * class device really shows up. For now, we live with the time
+ * delay...
+ */
+ sleep(1);
+
+#if 0 /* FIXME
+ Something like this could also work, but for some reason doesn't,
+ I also tried just stat() on the device symlink, but that still
+ has nasty races, I'm probably doing something stupid... :( */
+ loop = 10;
+ while (loop--) {
+ struct stat buf;
+ int retval;
+ char filename[SYSFS_PATH_MAX + 6];
+
+ strcpy(filename, class_dev->path);
+ strcat(filename, "/device");
+ dbg("looking for '%s'", filename);
+ retval = stat(filename, &buf);
+ if (!retval)
+ break;
- udev->mode = 0;
+ /* 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 (strcmp(class_dev->classname, SYSFS_BLOCK_NAME) == 0) {
+ if (isdigit(class_dev->path[strlen(class_dev->path)-1])) {
+ class_dev_parent = sysfs_get_classdev_parent(class_dev);
+ if (class_dev_parent == NULL) {
+ dbg("sysfs_get_classdev_parent for class device '%s' failed", class_dev->name);
+ } else {
+ strcpy(filename, class_dev_parent->path);
+ strcat(filename, "/device");
+ dbg("looking for '%s'", filename);
+ retval = stat(filename, &buf);
+ if (!retval)
+ break;
+ }
+ }
+ }
+ /* sleep to give the kernel a chance to create the device file */
+ sleep(1);
+ }
+#endif
+ loop = 1; /* FIXME put a real value in here for when everything is fixed... */
+ while (loop--) {
+ /* find the sysfs_device for this class device */
+ /* Wouldn't it really be nice if libsysfs could do this for us? */
+ sysfs_device = sysfs_get_classdev_device(class_dev);
+ if (sysfs_device != NULL)
+ goto exit;
- /* 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 {
/* 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 != NULL)
+ goto exit;
}
}
}
+ /* sleep to give the kernel a chance to create the link */
+ sleep(1);
+
}
-
+ dbg("Timed out waiting for device symlink, continuing on anyway...");
+exit:
+ return sysfs_device;
+}
+
+int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *udev)
+{
+ struct sysfs_device *sysfs_device = NULL;
+ int retval = 0;
+ struct perm_device *perm;
+ char *pos;
+
+ udev->mode = 0;
+
+ /* find the sysfs_device associated with this class device */
+ sysfs_device = get_sysfs_device(class_dev);
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);
+ wait_for_device_to_initialize(sysfs_device);
} else {
- dbg_parse("class_dev->name = '%s'", class_dev->name);
+ dbg("class_dev->name = '%s'", class_dev->name);
}
+ strfieldcpy(udev->kernel_name, class_dev->name);
+
+ /* get kernel number */
+ pos = class_dev->name + strlen(class_dev->name);
+ while (isdigit(*(pos-1)))
+ pos--;
+ strfieldcpy(udev->kernel_number, pos);
+ dbg("kernel_number='%s'", udev->kernel_number);
+
/* 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;
if (retval == 0)
goto found;
- retval = do_replace(class_dev, udev);
+ retval = do_replace(class_dev, udev, sysfs_device);
if (retval == 0)
goto found;
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;
if (retval)
return retval;
- dump_dev_list();
+ dump_config_dev_list();
+ dump_perm_dev_list();
return retval;
}
-
-