*
*/
-/* define this to enable parsing debugging */
-/* #define DEBUG_PARSER */
-
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <errno.h>
+#include <time.h>
#include <sys/wait.h>
+#include <sys/stat.h>
#include "list.h"
#include "udev.h"
#include "udev_version.h"
+#include "logging.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"
-
-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] == '\0') {
+ while (p[0] == '*')
+ p++;
+ return (p[0] != '\0');
+ }
+ switch (p[0]) {
+ case '[':
+ {
+ int not = 0;
+ p++;
+ if (p[0] == '!') {
+ not = 1;
+ p++;
+ }
+ while ((p[0] != '\0') && (p[0] != ']')) {
+ int match = 0;
+ if (p[1] == '-') {
+ if ((s[0] >= p[0]) && (s[0] <= p[2]))
+ match = 1;
+ p += 3;
+ } else {
+ match = (p[0] == s[0]);
+ p++;
+ }
+ if (match ^ not) {
+ while ((p[0] != '\0') && (p[0] != ']'))
+ p++;
+ if (p[0] == ']')
+ 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] == '\0') {
+ return 0;
+ }
break;
default:
- dbg_parse("Unknown type of device!");
+ if ((p[0] == s[0]) || (p[0] == '?'))
+ 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;
-
- /* loop through the whole list of devices to see if we already have
- * this one... */
- list_for_each(tmp, &config_device_list) {
- struct config_device *dev = list_entry(tmp, struct config_device, node);
- if (strcmp(dev->name, new_dev->name) == 0) {
- /* the same, copy the new info into this structure */
- 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);
- return 0;
- }
+ struct perm_device *dev;
+ struct perm_device *tmp_dev;
+
+ /* update the values if we already have the device */
+ list_for_each_entry(dev, &perm_device_list, 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;
}
- /* not found, lets create a new structure, and add it to the 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;
- list_for_each(tmp, &config_device_list) {
- struct config_device *dev = list_entry(tmp, struct config_device, node);
- dump_dev(dev);
+ list_for_each_entry(perm, &perm_device_list, node) {
+ if (strcmp_pattern(perm->name, name))
+ continue;
+ return perm;
}
+ return NULL;
}
-static int get_value(const char *left, char **orig_string, char **ret_string)
+static mode_t get_default_mode(void)
{
- char *temp;
- char *string = *orig_string;
-
- /* eat any whitespace */
- while (isspace(*string))
- ++string;
-
- /* split based on '=' */
- temp = strsep(&string, "=");
- if (strcasecmp(temp, left) == 0) {
- /* got it, now strip off the '"' */
- while (isspace(*string))
- ++string;
- if (*string == '"')
- ++string;
- temp = strsep(&string, "\"");
- *ret_string = temp;
- *orig_string = string;
- return 0;
- }
- return -ENODEV;
+ mode_t mode = 0600; /* default to owner rw only */
+
+ if (strlen(default_mode_str) != 0)
+ mode = strtol(default_mode_str, NULL, 8);
+
+ return mode;
}
-
-static int get_pair(char **orig_string, char **left, char **right)
+
+static char *get_default_owner(void)
{
- char *temp;
- char *string = *orig_string;
-
- /* eat any whitespace */
- while (isspace(*string))
- ++string;
-
- /* split based on '=' */
- temp = strsep(&string, "=");
- *left = temp;
-
- /* take the right side and strip off the '"' */
- while (isspace(*string))
- ++string;
- if (*string == '"')
- ++string;
- temp = strsep(&string, "\"");
- *right = temp;
- *orig_string = string;
-
- return 0;
+ if (strlen(default_owner_str) == 0)
+ strncpy(default_owner_str, "root", OWNER_SIZE);
+
+ return default_owner_str;
}
-static int namedev_init_config(void)
+static char *get_default_group(void)
{
- char line[255];
- 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;
- }
+ if (strlen(default_group_str) == 0)
+ strncpy(default_group_str, "root", GROUP_SIZE);
- /* loop through the whole file */
+ return default_group_str;
+}
+
+static void apply_format(struct udevice *udev, unsigned char *string)
+{
+ char temp[NAME_SIZE];
+ char temp1[NAME_SIZE];
+ char *tail;
+ char *pos;
+ char *pos2;
+ char *pos3;
+ int num;
+
+ pos = string;
while (1) {
- /* get a line */
- temp = fgets(line, sizeof(line), fd);
- if (temp == NULL)
+ num = 0;
+ pos = strchr(pos, '%');
+
+ if (pos) {
+ pos[0] = '\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(temp, tail+1);
+
+ 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;
+ case 'k':
+ if (strlen(udev->kernel_name) == 0)
+ break;
+ strcat(pos, udev->kernel_name);
+ dbg("substitute kernel name '%s'", udev->kernel_name);
+ break;
+ case 'n':
+ if (strlen(udev->kernel_number) == 0)
+ break;
+ strcat(pos, udev->kernel_number);
+ dbg("substitute kernel number '%s'", udev->kernel_number);
+ 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;
+ case 'c':
+ if (strlen(udev->program_result) == 0)
+ break;
+ if (num) {
+ /* get part of return string */
+ strncpy(temp1, udev->program_result, sizeof(temp1));
+ pos2 = temp1;
+ while (num) {
+ num--;
+ pos3 = strsep(&pos2, " ");
+ if (pos3 == NULL) {
+ dbg("requested part of result string not found");
+ break;
+ }
+ }
+ if (pos3) {
+ strcat(pos, pos3);
+ dbg("substitute part of result string '%s'", pos3);
+ }
+ } else {
+ strcat(pos, udev->program_result);
+ dbg("substitute result string '%s'", udev->program_result);
+ }
+ break;
+ case '%':
+ strcat(pos, "%");
+ pos++;
+ break;
+ default:
+ dbg("unknown substitution type '%%%c'", pos[1]);
+ break;
+ }
+ strcat(string, temp);
+ } else
break;
-
- dbg_parse("read %s", temp);
-
- /* eat the whitespace at the beginning of the line */
- while (isspace(*temp))
- ++temp;
-
- /* no more 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)
- continue;
- strcpy(dev.bus, temp3);
-
- /* file="value" */
- temp2 = strsep(&temp, ",");
- retval = get_pair(&temp, &temp2, &temp3);
- if (retval)
- continue;
- strcpy(dev.sysfs_file, temp2);
- strcpy(dev.sysfs_value, temp3);
-
- /* NAME="new_name" */
- temp2 = strsep(&temp, ",");
- retval = get_value("NAME", &temp, &temp3);
- if (retval)
- continue;
- strcpy(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)
- continue;
- strcpy(dev.bus, temp3);
-
- /* ID="id" */
- temp2 = strsep(&temp, ",");
- retval = get_value("id", &temp, &temp3);
- if (retval)
- continue;
- strcpy(dev.id, temp3);
-
- /* NAME="new_name" */
- temp2 = strsep(&temp, ",");
- retval = get_value("NAME", &temp, &temp3);
- if (retval)
- continue;
- strcpy(dev.name, temp3);
-
- dbg_parse("NUMBER name = '%s', bus = '%s', id = '%s'",
- dev.name, dev.bus, dev.id);
- }
-
- if (strcasecmp(temp2, TYPE_TOPOLOGY) == 0) {
- /* number type */
- dev.type = TOPOLOGY;
-
- /* BUS="bus" */
- retval = get_value("BUS", &temp, &temp3);
- if (retval)
- continue;
- strcpy(dev.bus, temp3);
-
- /* PLACE="place" */
- temp2 = strsep(&temp, ",");
- retval = get_value("place", &temp, &temp3);
- if (retval)
- continue;
- strcpy(dev.place, temp3);
-
- /* NAME="new_name" */
- temp2 = strsep(&temp, ",");
- retval = get_value("NAME", &temp, &temp3);
- if (retval)
- continue;
- strcpy(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)
- continue;
- strcpy(dev.kernel_name, temp3);
-
- /* NAME="new_name" */
- temp2 = strsep(&temp, ",");
- retval = get_value("NAME", &temp, &temp3);
- if (retval)
- continue;
- strcpy(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;
-
- /* PROGRAM="executable" */
- retval = get_value("PROGRAM", &temp, &temp3);
- if (retval)
- continue;
- strcpy(dev.exec_program, temp3);
-
- /* BUS="bus" */
- temp2 = strsep(&temp, ",");
- retval = get_value("BUS", &temp, &temp3);
- if (retval)
- continue;
- strcpy(dev.bus, temp3);
-
- /* ID="id" */
- temp2 = strsep(&temp, ",");
- retval = get_value("ID", &temp, &temp3);
- if (retval)
- continue;
- strcpy(dev.id, temp3);
-
- /* NAME="new_name" */
- temp2 = strsep(&temp, ",");
- retval = get_value("NAME", &temp, &temp3);
- if (retval)
- continue;
- strcpy(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;
- }
}
+}
-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" },
+ { .bus = "usb-serial", .file = "detach_state" },
+ { .bus = "ide", .file = "detach_state" },
+ { .bus = "pci", .file = "vendor" },
+ {}
+};
+
+#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;
-
- 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;
- }
+ /* 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;
- /* 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;
-
- /* no more 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, ":");
- strncpy(dev.name, temp2, sizeof(dev.name));
-
- temp2 = strsep(&temp, ":");
- strncpy(dev.owner, temp2, sizeof(dev.owner));
-
- temp2 = strsep(&temp, ":");
- 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;
-}
+ return; /* here to prevent compiler warning... */
+}
-static mode_t get_default_mode(struct sysfs_class_device *class_dev)
+static void fix_kernel_name(struct udevice *udev)
{
- /* just default everyone to rw for the world! */
- return 0666;
+ char *temp = udev->kernel_name;
+
+ while (*temp != 0x00) {
+ /* Some block devices have a ! in their name,
+ * we need to change that to / */
+ if (*temp == '!')
+ *temp = '/';
+ ++temp;
+ }
}
-
-static int exec_callout(struct config_device *dev, char *value, int len)
+static int execute_program(char *path, char *value, int len)
{
int retval;
int res;
pid_t pid;
int value_set = 0;
char buffer[256];
+ char *pos;
+ char *args[PROGRAM_MAXARG];
+ int i;
- dbg("callout to %s\n", dev->exec_program);
+ dbg("executing '%s'", path);
retval = pipe(fds);
if (retval != 0) {
dbg("pipe failed");
return -1;
}
pid = fork();
- if (pid == -1) {
- dbg("fork failed");
- return -1;
- }
-
- if (pid == 0) {
- /*
- * child
- */
+ switch(pid) {
+ case 0:
+ /* child */
close(STDOUT_FILENO);
dup(fds[1]); /* dup write side of pipe to STDOUT */
- retval = execve(dev->exec_program, main_argv, main_envp);
- if (retval != 0) {
- dbg("child execve failed");
- exit(1);
+ if (strchr(path, ' ')) {
+ /* exec with arguments */
+ pos = path;
+ for (i=0; i < PROGRAM_MAXARG-1; i++) {
+ args[i] = strsep(&pos, " ");
+ if (args[i] == NULL)
+ break;
+ }
+ if (args[i]) {
+ dbg("too many args - %d", i);
+ args[i] = NULL;
+ }
+ retval = execv(args[0], args);
+ } else {
+ retval = execv(path, main_argv);
}
- return -1; /* avoid compiler warning */
- } else {
- /*
- * Parent reads from fds[0].
- */
+ dbg("child execve failed");
+ exit(1);
+ case -1:
+ dbg("fork failed");
+ return -1;
+ default:
+ /* parent reads from fds[0] */
close(fds[1]);
retval = 0;
while (1) {
break;
buffer[res] = '\0';
if (res > len) {
- dbg("callout len %d too short\n", len);
+ dbg("result len %d too short", len);
retval = -1;
}
if (value_set) {
- dbg("callout value already set");
+ dbg("result value already set");
retval = -1;
} else {
value_set = 1;
strncpy(value, buffer, len);
+ pos = value + strlen(value)-1;
+ if (pos[0] == '\n')
+ pos[0] = '\0';
+ dbg("result is '%s'", value);
}
}
close(fds[0]);
retval = -1;
}
-#ifndef __KLIBC__
if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) {
- dbg("callout program status 0x%x", status);
+ dbg("exec program status 0x%x", status);
retval = -1;
}
-#endif
}
return retval;
}
-static int get_attr(struct sysfs_class_device *class_dev, struct udevice *udev)
+static int compare_sysfs_attribute(struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device, struct sysfs_pair *pair)
{
- struct list_head *tmp;
- int retval = 0;
- int found;
+ struct sysfs_attribute *tmpattr = NULL;
+ char *c;
- udev->mode = 0;
- if (class_dev->sysdevice) {
- dbg_parse("class_dev->sysdevice->path = '%s'", class_dev->sysdevice->path);
- dbg_parse("class_dev->sysdevice->bus_id = '%s'", class_dev->sysdevice->bus_id);
- } else {
- dbg_parse("class_dev->name = '%s'", class_dev->name);
+ 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;
}
- list_for_each(tmp, &config_device_list) {
- struct config_device *dev = list_entry(tmp, struct config_device, node);
- switch (dev->type) {
- case LABEL:
- {
- struct sysfs_attribute *tmpattr = NULL;
- struct sysfs_class_device *class_dev_parent = NULL;
- char *temp = NULL;
-
- dbg_parse("LABEL: match file '%s' with value '%s'",
- dev->sysfs_file, dev->sysfs_value);
- /* 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 (class_dev->sysdevice) {
- tmpattr = sysfs_get_device_attr(class_dev->sysdevice, dev->sysfs_file);
- if (tmpattr)
- goto label_found;
- }
+ return -ENODEV;
- /* 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 (isdigit(class_dev->path[strlen(class_dev->path)-1])) {
- char path[SYSFS_PATH_MAX];
-
- dbg_parse("really is a partition...");
- strcpy(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);
- if (class_dev_parent == NULL) {
- dbg("sysfs_open_class_device at '%s' failed", path);
- continue;
- }
- dbg_parse("class_dev_parent->name = %s", class_dev_parent->name);
-
- /* try to find the attribute in the class device directory */
- tmpattr = sysfs_get_classdev_attr(class_dev_parent, dev->sysfs_file);
- if (tmpattr)
- goto label_found;
-
- /* look in the class device directory if present */
- if (class_dev_parent->sysdevice) {
- tmpattr = sysfs_get_device_attr(class_dev_parent->sysdevice, dev->sysfs_file);
- if (tmpattr)
- goto label_found;
- }
-
- }
- }
- if (class_dev_parent)
- sysfs_close_class_device(class_dev_parent);
+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;
- continue;
+ dbg("found matching attribute '%s' with value '%s'",
+ pair->file, pair->value);
+ return 0;
+}
-label_found:
- tmpattr->value[strlen(tmpattr->value)-1] = 0x00;
- dbg_parse("file '%s' found with value '%s' compare with '%s'", dev->sysfs_file, tmpattr->value, dev->sysfs_value);
- if (strcmp(dev->sysfs_value, tmpattr->value) != 0) {
- if (class_dev_parent)
- sysfs_close_class_device(class_dev_parent);
- continue;
- }
+static int match_sysfs_pairs(struct config_device *dev, struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
+{
+ struct sysfs_pair *pair;
+ int i;
- strcpy(udev->name, dev->name);
- if (isdigit(class_dev->path[strlen(class_dev->path)-1])) {
- temp = &class_dev->path[strlen(class_dev->path)-1];
- strcat(udev->name, temp);
- }
- if (dev->mode != 0) {
- udev->mode = dev->mode;
- strcpy(udev->owner, dev->owner);
- strcpy(udev->group, dev->group);
- }
- dbg_parse("file '%s' with value '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
- dev->sysfs_file, dev->sysfs_value, udev->name,
- dev->owner, dev->group, dev->mode);
- if (class_dev_parent)
- sysfs_close_class_device(class_dev_parent);
- goto done;
+ for (i = 0; i < MAX_SYSFS_PAIRS; ++i) {
+ pair = &dev->sysfs_pair[i];
+ if ((pair->file[0] == '\0') || (pair->value[0] == '\0'))
break;
+ if (compare_sysfs_attribute(class_dev, sysfs_device, pair) != 0) {
+ dbg("sysfs attribute doesn't match");
+ return -ENODEV;
+ }
+ }
+
+ return 0;
+}
+
+static int match_id(struct config_device *dev, struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
+{
+ char path[SYSFS_PATH_MAX];
+ char *temp = NULL;
+
+ /* we have to have a sysfs device for ID to work */
+ if (!sysfs_device)
+ return -ENODEV;
+
+ strfieldcpy(path, sysfs_device->path);
+ temp = strrchr(path, '/');
+ temp++;
+ dbg("search '%s' in '%s', path='%s'", dev->id, temp, path);
+ if (strcmp_pattern(dev->id, temp) != 0)
+ return -ENODEV;
+ else
+ return 0;
+}
+
+static int match_place(struct config_device *dev, struct sysfs_class_device *class_dev, struct sysfs_device *sysfs_device)
+{
+ char path[SYSFS_PATH_MAX];
+ int found;
+ char *temp = NULL;
+
+ /* we have to have a sysfs device for PLACE to work */
+ if (!sysfs_device)
+ return -ENODEV;
+
+ found = 0;
+ strfieldcpy(path, sysfs_device->path);
+ temp = strrchr(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("search '%s' in '%s', path='%s'", dev->place, temp, path);
+ if (strstr(temp, dev->place) != NULL)
+ found = 1;
+ }
+ if (!found) {
+ dbg("place doesn't match");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static struct sysfs_device *get_sysfs_device(struct sysfs_class_device *class_dev)
+{
+ struct sysfs_device *sysfs_device;
+ struct sysfs_class_device *class_dev_parent;
+ struct timespec tspec;
+ int loop;
+
+ /* Figure out where the device symlink is at. For char devices this will
+ * always be in the class_dev->path. But for block devices, it's different.
+ * The main block device will have the device symlink in it's path, but
+ * all partitions have the symlink in its parent directory.
+ * But we need to watch out for block devices that do not have parents, yet
+ * look like a partition (fd0, loop0, etc.) They all do not have a device
+ * symlink yet. We do sit and spin on waiting for them right now, we should
+ * possibly have a whitelist for these devices here...
+ */
+ class_dev_parent = sysfs_get_classdev_parent(class_dev);
+ if (class_dev_parent)
+ dbg("Really a partition");
+
+ tspec.tv_sec = 0;
+ tspec.tv_nsec = 10000000; /* sleep 10 millisec */
+ loop = 10;
+ while (loop--) {
+ nanosleep(&tspec, NULL);
+ if (class_dev_parent)
+ sysfs_device = sysfs_get_classdev_device(class_dev_parent);
+ else
+ sysfs_device = sysfs_get_classdev_device(class_dev);
+
+ if (sysfs_device != NULL)
+ goto device_found;
+ }
+ dbg("timed out waiting for device symlink, continuing on anyway...");
+
+device_found:
+ /* We have another issue with just the wait above - the sysfs part of
+ * the kernel may not be quick enough to have created the link to the
+ * device under the "bus" subsystem. Due to this, the sysfs_device->bus
+ * will not contain the actual bus name :(
+ *
+ * Libsysfs now provides a new API sysfs_get_device_bus(), so use it
+ * if needed
+ */
+ if (sysfs_device) {
+ if (sysfs_device->bus[0] != '\0')
+ goto bus_found;
+
+ loop = 10;
+ tspec.tv_nsec = 10000000;
+ while (loop--) {
+ nanosleep(&tspec, NULL);
+ sysfs_get_device_bus(sysfs_device);
+
+ if (sysfs_device->bus[0] != '\0')
+ goto bus_found;
+ }
+ dbg("timed out waiting to find the device bus, continuing on anyway");
+ goto exit;
+bus_found:
+ dbg("device %s is registered with bus '%s'",
+ sysfs_device->name, sysfs_device->bus);
+ }
+exit:
+ return sysfs_device;
+}
+
+static int match_rule(struct config_device *dev, struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
+{
+ while (1) {
+ /* check for matching bus value */
+ if (dev->bus[0] != '\0') {
+ if (sysfs_device == NULL) {
+ dbg("device has no bus");
+ goto try_parent;
}
- case NUMBER:
- {
- char path[SYSFS_PATH_MAX];
- char *temp;
-
- found = 0;
- if (!class_dev->sysdevice)
- continue;
- strcpy(path, class_dev->sysdevice->path);
- temp = strrchr(path, '/');
- dbg_parse("NUMBER path = '%s'", path);
- dbg_parse("NUMBER temp = '%s' id = '%s'", temp, dev->id);
- if (strstr(temp, dev->id) != NULL) {
- found = 1;
+ dbg("check for " FIELD_BUS " dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
+ if (strcmp_pattern(dev->bus, sysfs_device->bus) != 0) {
+ dbg(FIELD_BUS " is not matching");
+ goto try_parent;
} else {
- *temp = 0x00;
- temp = strrchr(path, '/');
- dbg_parse("NUMBERY temp = '%s' id = '%s'", temp, dev->id);
- if (strstr(temp, dev->id) != NULL)
- found = 1;
- }
- if (!found)
- continue;
-
- strcpy(udev->name, dev->name);
- if (dev->mode != 0) {
- udev->mode = dev->mode;
- strcpy(udev->owner, dev->owner);
- strcpy(udev->group, dev->group);
- }
- dbg_parse("device id '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
- dev->id, udev->name,
- dev->owner, dev->group, dev->mode);
- goto done;
- break;
+ dbg(FIELD_BUS " matches");
}
- case TOPOLOGY:
- {
- char path[SYSFS_PATH_MAX];
- char *temp;
-
- if (!class_dev->sysdevice)
- continue;
- found = 0;
- strcpy(path, class_dev->sysdevice->path);
- temp = strrchr(path, '/');
- dbg_parse("TOPOLOGY path = '%s'", path);
- dbg_parse("TOPOLOGY temp = '%s' place = '%s'", temp, dev->place);
- if (strstr(temp, dev->place) != NULL) {
- found = 1;
+ }
+
+ /* check for matching kernel name*/
+ if (dev->kernel[0] != '\0') {
+ dbg("check for " FIELD_KERNEL " dev->kernel='%s' class_dev->name='%s'", dev->kernel, class_dev->name);
+ if (strcmp_pattern(dev->kernel, class_dev->name) != 0) {
+ dbg(FIELD_KERNEL " is not matching");
+ goto try_parent;
} else {
- *temp = 0x00;
- temp = strrchr(path, '/');
- dbg_parse("TOPOLOGY temp = '%s' place = '%s'", temp, dev->place);
- if (strstr(temp, dev->place) != NULL)
- found = 1;
+ dbg(FIELD_KERNEL " matches");
}
- if (!found)
- continue;
-
- strcpy(udev->name, dev->name);
- if (dev->mode != 0) {
- udev->mode = dev->mode;
- strcpy(udev->owner, dev->owner);
- strcpy(udev->group, dev->group);
+ }
+
+ /* check for matching bus id */
+ if (dev->id[0] != '\0') {
+ dbg("check " FIELD_ID);
+ if (match_id(dev, class_dev, sysfs_device) != 0) {
+ dbg(FIELD_ID " is not matching");
+ goto try_parent;
+ } else {
+ dbg(FIELD_ID " matches");
}
- dbg_parse("device at '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
- dev->place, udev->name,
- dev->owner, dev->group, dev->mode);
- goto done;
- break;
+ }
+
+ /* check for matching place of device */
+ if (dev->place[0] != '\0') {
+ dbg("check " FIELD_PLACE);
+ if (match_place(dev, class_dev, sysfs_device) != 0) {
+ dbg(FIELD_PLACE " is not matching");
+ goto try_parent;
+ } else {
+ dbg(FIELD_PLACE " matches");
}
- case CALLOUT:
- {
- char value[ID_SIZE];
-
- if (exec_callout(dev, value, sizeof(value)))
- continue;
- if (strncmp(value, dev->id, sizeof(value)) != 0)
- continue;
- strcpy(udev->name, dev->name);
- if (dev->mode != 0) {
- udev->mode = dev->mode;
- strcpy(udev->owner, dev->owner);
- strcpy(udev->group, dev->group);
+ }
+
+ /* check for matching sysfs pairs */
+ if (dev->sysfs_pair[0].file[0] != '\0') {
+ dbg("check " FIELD_SYSFS " pairs");
+ if (match_sysfs_pairs(dev, class_dev, sysfs_device) != 0) {
+ dbg(FIELD_SYSFS " is not matching");
+ goto try_parent;
+ } else {
+ dbg(FIELD_SYSFS " matches");
}
- dbg_parse("device callout '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
- dev->id, udev->name,
- dev->owner, dev->group, dev->mode);
- goto done;
- break;
+ }
+
+ /* execute external program */
+ if (dev->program[0] != '\0') {
+ dbg("check " FIELD_PROGRAM);
+ apply_format(udev, dev->program);
+ if (execute_program(dev->program, udev->program_result, NAME_SIZE) != 0) {
+ dbg(FIELD_PROGRAM " returned nozero");
+ goto try_parent;
+ } else {
+ dbg(FIELD_PROGRAM " returned successful");
}
- case REPLACE:
- dbg_parse("REPLACE: replace name '%s' with '%s'",
- dev->kernel_name, dev->name);
- if (strcmp(dev->kernel_name, class_dev->name) != 0)
- continue;
- strcpy(udev->name, dev->name);
- if (dev->mode != 0) {
- udev->mode = dev->mode;
- strcpy(udev->owner, dev->owner);
- strcpy(udev->group, dev->group);
+ }
+
+ /* check for matching result of external program */
+ if (dev->result[0] != '\0') {
+ dbg("check for " FIELD_RESULT
+ " dev->result='%s', udev->program_result='%s'",
+ dev->result, udev->program_result);
+ if (strcmp_pattern(dev->result, udev->program_result) != 0) {
+ dbg(FIELD_RESULT " is not matching");
+ goto try_parent;
+ } else {
+ dbg(FIELD_RESULT " matches");
}
- dbg_parse("'%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
- dev->kernel_name, udev->name,
- dev->owner, dev->group, dev->mode);
- goto done;
- break;
- case KERNEL_NAME:
- break;
- default:
- dbg_parse("Unknown type of device '%d'", dev->type);
- break;
- }
- }
- strcpy(udev->name, class_dev->name);
+ }
-done:
- /* mode was never set above */
- if (!udev->mode) {
- udev->mode = get_default_mode(class_dev);
- udev->owner[0] = 0x00;
- udev->group[0] = 0x00;
+ /* Yeah, we matched! */
+ return 0;
+
+try_parent:
+ dbg("try parent sysfs device");
+ sysfs_device = sysfs_get_device_parent(sysfs_device);
+ if (sysfs_device == NULL)
+ return -ENODEV;
+ 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);
}
- return retval;
+
}
-int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *dev)
+int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *udev)
{
- int retval;
+ struct sysfs_device *sysfs_device = NULL;
+ struct config_device *dev;
+ struct perm_device *perm;
+ char *pos;
- retval = get_attr(class_dev, dev);
- if (retval)
- dbg("get_attr failed");
+ udev->mode = 0;
- return retval;
+ /* find the sysfs_device associated with this class device */
+ sysfs_device = get_sysfs_device(class_dev);
+ if (sysfs_device) {
+ 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);
+ }
+ dbg("class_dev->name = '%s'", class_dev->name);
+
+ strfieldcpy(udev->kernel_name, class_dev->name);
+ fix_kernel_name(udev);
+ dbg("udev->kernel_name = '%s'", udev->kernel_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);
+
+ /* look for a matching rule to apply */
+ list_for_each_entry(dev, &config_device_list, node) {
+ dbg("process rule");
+ if (match_rule(dev, class_dev, udev, sysfs_device) == 0) {
+ if (dev->name[0] == '\0') {
+ info("configured rule in '%s' at line %i applied, '%s' is ignored",
+ udev_rules_filename, dev->config_line, udev->kernel_name);
+ return -1;
+ }
+
+ info("configured rule in '%s' at line %i applied, '%s' becomes '%s'",
+ udev_rules_filename, dev->config_line, udev->kernel_name, dev->name);
+ strfieldcpy(udev->name, dev->name);
+ strfieldcpy(udev->symlink, dev->symlink);
+ goto found;
+ }
+ }
+
+ /* no rule was found so we use the kernel name */
+ strfieldcpy(udev->name, class_dev->name);
+ goto done;
+
+found:
+ /* substitute placeholder */
+ apply_format(udev, udev->name);
+ apply_format(udev, udev->symlink);
+
+done:
+ 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();
+ strncpy(udev->owner, get_default_owner(), OWNER_SIZE);
+ strncpy(udev->group, get_default_group(), GROUP_SIZE);
+ }
+ 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_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;
}
-
-
~ianmdlvl / elogind.git / blobdiff