#include <ctype.h>
#include <unistd.h>
#include <errno.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
#include "list.h"
#include "udev.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"
-
-enum config_type {
- KERNEL_NAME = 0, /* must be 0 to let memset() default to this value */
- LABEL = 1,
- NUMBER = 2,
- TOPOLOGY = 3,
- REPLACE = 4,
-};
-
-#define BUS_SIZE 30
-#define FILE_SIZE 50
-#define VALUE_SIZE 100
-#define ID_SIZE 50
-#define PLACE_SIZE 50
-#define NAME_SIZE 100
-#define OWNER_SIZE 30
-#define GROUP_SIZE 30
-
-
-struct config_device {
- struct list_head node;
-
- enum config_type type;
-
- char bus[BUS_SIZE];
- char sysfs_file[FILE_SIZE];
- char sysfs_value[VALUE_SIZE];
- char id[ID_SIZE];
- char place[PLACE_SIZE];
- char kernel_name[NAME_SIZE];
-
- /* what to set the device to */
- int mode;
- char name[NAME_SIZE];
- char owner[OWNER_SIZE];
- char group[GROUP_SIZE];
-};
-
+LIST_HEAD(config_device_list);
+LIST_HEAD(perm_device_list);
-static LIST_HEAD(config_device_list);
+/* compare string with pattern (supports * ? [0-9] [!A-Z]) */
+static int strcmp_pattern(const char *p, const char *s)
+{
+ 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 '*':
+ if (strcmp_pattern(p, s+1))
+ return strcmp_pattern(p+1, s);
+ return 0;
+ case '\0':
+ if (*s == '\0') {
+ return 0;
+ }
+ break;
+ default:
+ if ((*p == *s) || (*p == '?'))
+ return strcmp_pattern(p+1, s+1);
+ break;
+ }
+ return 1;
+}
#define copy_var(a, b, var) \
if (b->var) \
- b->var = a->var;
+ a->var = b->var;
#define copy_string(a, b, var) \
if (strlen(b->var)) \
- strcpy(b->var, a->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;
- /* loop through the whole list of devices to see if we already have
- * this one... */
+ /* 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);
- if (strcmp(dev->name, new_dev->name) == 0) {
- /* the same, copy the new info into this structure */
- copy_var(new_dev, dev, type);
- copy_var(new_dev, dev, mode);
- copy_string(new_dev, dev, bus);
- copy_string(new_dev, dev, sysfs_file);
- copy_string(new_dev, dev, sysfs_value);
- copy_string(new_dev, dev, id);
- copy_string(new_dev, dev, place);
- copy_string(new_dev, dev, kernel_name);
- copy_string(new_dev, dev, owner);
- copy_string(new_dev, dev, group);
- return 0;
- }
+ 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_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, exec_program);
+ copy_string(dev, new_dev, symlink);
+ return 0;
}
- /* not found, lets create a new structure, and add it to the list */
+ /* not found, add new structure to the device 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);
+ list_add_tail(&tmp_dev->node, &config_device_list);
+ //dump_config_dev(tmp_dev);
return 0;
}
-static int get_value(const char *left, char **orig_string, char **ret_string)
+int add_perm_dev(struct perm_device *new_dev)
{
- 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;
+ struct list_head *tmp;
+ struct perm_device *tmp_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;
}
- return -ENODEV;
+
+ /* 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 namedev_init_config(void)
+static struct perm_device *find_perm(char *name)
{
- char filename[255];
- char line[255];
- char *temp;
- char *temp2;
- char *temp3;
- FILE *fd;
- int retval = 0;
- struct config_device dev;
+ struct list_head *tmp;
+ struct perm_device *perm = NULL;
- strcpy(filename, NAMEDEV_CONFIG_ROOT NAMEDEV_CONFIG_FILE);
- dbg("opening %s to read as permissions config", filename);
- fd = fopen(filename, "r");
- if (fd == NULL) {
- dbg("Can't open %s", filename);
- return -ENODEV;
+ 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;
+}
- /* loop through the whole file */
- while (1) {
- /* get a line */
- temp = fgets(line, sizeof(line), fd);
- if (temp == NULL)
- break;
+static mode_t get_default_mode(struct sysfs_class_device *class_dev)
+{
+ mode_t mode = 0600; /* default to owner rw only */
- dbg("read %s", temp);
+ if (strlen(default_mode_str) != 0) {
+ mode = strtol(default_mode_str, NULL, 8);
+ }
+ return mode;
+}
- /* eat the whitespace at the beginning of the line */
- while (isspace(*temp))
- ++temp;
+static void build_kernel_number(struct sysfs_class_device *class_dev, struct udevice *udev)
+{
+ char *dig;
- /* no more line? */
- if (*temp == 0x00)
- continue;
+ 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);
+}
- /* see if this is a comment */
- if (*temp == COMMENT_CHARACTER)
- continue;
+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;
- memset(&dev, 0x00, sizeof(dev));
+ while (1) {
+ num = 0;
+ pos = strchr(string, '%');
+
+ 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);
+
+ 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 'n':
+ if (strlen(udev->kernel_number) == 0)
+ break;
+ strcat(pos, udev->kernel_number);
+ dbg("substitute kernel number '%s'", udev->kernel_number);
+ break;
+ 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;
+ 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->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;
+ default:
+ dbg("unknown substitution type '%%%c'", pos[1]);
+ break;
+ }
+ strcat(string, name);
+ } else
+ break;
+ }
+}
- /* parse the line */
- temp2 = strsep(&temp, ",");
- if (strcasecmp(temp2, TYPE_LABEL) == 0) {
- /* label type */
- dev.type = LABEL;
+static struct bus_file {
+ char *bus;
+ char *file;
+} bus_files[] = {
+ { .bus = "scsi", .file = "vendor" },
+ { .bus = "usb", .file = "idVendor" },
+ {}
+};
- /* BUS="bus" */
- retval = get_value("BUS", &temp, &temp3);
- if (retval)
- continue;
- strcpy(dev.bus, temp3);
- dbg("LABEL name = %s, bus = %s", dev.name, dev.bus);
+#define SECONDS_TO_WAIT_FOR_FILE 10
+static void wait_for_device_to_initialize(struct sysfs_device *sysfs_device)
+{
+ /* 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;
+
+ while (1) {
+ if (b->bus == NULL)
+ break;
+ 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:
+ return; /* here to prevent compiler warning... */
+}
- if (strcasecmp(temp2, TYPE_NUMBER) == 0) {
- /* number type */
- dev.type = NUMBER;
+static int exec_callout(struct config_device *dev, char *value, int len)
+{
+ int retval;
+ int res;
+ int status;
+ int fds[2];
+ pid_t pid;
+ int value_set = 0;
+ char buffer[256];
+ char *pos;
+ char *args[CALLOUT_MAXARG];
+ int i;
+
+ dbg("callout to '%s'", dev->exec_program);
+ retval = pipe(fds);
+ if (retval != 0) {
+ dbg("pipe failed");
+ return -1;
+ }
+ pid = fork();
+ if (pid == -1) {
+ dbg("fork failed");
+ return -1;
+ }
- /* BUS="bus" */
- retval = get_value("BUS", &temp, &temp3);
- if (retval)
- continue;
- strcpy(dev.bus, temp3);
- dbg("NUMBER name = %s, bus = %s", dev.name, dev.bus);
+ if (pid == 0) {
+ /* child */
+ close(STDOUT_FILENO);
+ dup(fds[1]); /* dup write side of pipe to STDOUT */
+ if (strchr(dev->exec_program, ' ')) {
+ /* callout with arguments */
+ pos = dev->exec_program;
+ for (i=0; i < CALLOUT_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 = execve(args[0], args, main_envp);
+ } else {
+ retval = execve(dev->exec_program, main_argv, main_envp);
+ }
+ if (retval != 0) {
+ dbg("child execve failed");
+ exit(1);
+ }
+ return -1; /* avoid compiler warning */
+ } else {
+ /* parent reads from fds[0] */
+ close(fds[1]);
+ retval = 0;
+ while (1) {
+ res = read(fds[0], buffer, sizeof(buffer) - 1);
+ if (res <= 0)
+ break;
+ buffer[res] = '\0';
+ if (res > len) {
+ dbg("callout len %d too short", len);
+ retval = -1;
+ }
+ if (value_set) {
+ dbg("callout 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("callout returned '%s'", value);
+ }
+ }
+ close(fds[0]);
+ res = wait(&status);
+ if (res < 0) {
+ dbg("wait failed result %d", res);
+ retval = -1;
}
- if (strcasecmp(temp2, TYPE_TOPOLOGY) == 0) {
- /* number type */
- dev.type = TOPOLOGY;
+#ifndef __KLIBC__
+ if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) {
+ dbg("callout program status 0x%x", status);
+ retval = -1;
+ }
+#endif
+ }
+ return retval;
+}
+
+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;
- /* BUS="bus" */
- retval = get_value("BUS", &temp, &temp3);
- if (retval)
+ list_for_each(tmp, &config_device_list) {
+ dev = list_entry(tmp, struct config_device, node);
+ if (dev->type != CALLOUT)
+ continue;
+
+ 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;
- strcpy(dev.bus, temp3);
- dbg("TOPOLOGY name = %s, bus = %s", dev.name, dev.bus);
}
- if (strcasecmp(temp2, TYPE_REPLACE) == 0) {
- /* number type */
- dev.type = REPLACE;
+ /* 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 (strcmp_pattern(dev->id, udev->callout_value) != 0)
+ continue;
+ strfieldcpy(udev->name, dev->name);
+ 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)
+{
+ struct sysfs_attribute *tmpattr = NULL;
+ struct config_device *dev;
+ struct list_head *tmp;
+ char *c;
- /* KERNEL="kernel_name" */
- retval = get_value("KERNEL", &temp, &temp3);
- if (retval)
- continue;
- strcpy(dev.kernel_name, temp3);
+ list_for_each(tmp, &config_device_list) {
+ dev = list_entry(tmp, struct config_device, node);
+ if (dev->type != LABEL)
+ continue;
- /* NAME="new_name" */
- temp2 = strsep(&temp, ",");
- retval = get_value("NAME", &temp, &temp3);
- if (retval)
+ 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;
- strcpy(dev.name, temp3);
- dbg("REPLACE name = %s, kernel_name = %s", dev.name, dev.kernel_name);
}
- retval = add_dev(&dev);
- if (retval) {
- dbg("add_dev returned with error %d", retval);
- goto exit;
+ 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)
+ 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;
}
- }
-exit:
- fclose(fd);
- return retval;
-}
+ continue;
+label_found:
+ 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_pattern(dev->sysfs_value, tmpattr->value) != 0)
+ continue;
+
+ strfieldcpy(udev->name, dev->name);
+ strfieldcpy(udev->symlink, dev->symlink);
+ dbg("found matching attribute '%s', '%s' becomes '%s' ",
+ dev->sysfs_file, class_dev->name, udev->name);
-static int namedev_init_permissions(void)
+ return 0;
+ }
+ return -ENODEV;
+}
+
+static int do_number(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
{
- char filename[255];
- char line[255];
- char *temp;
- char *temp2;
- FILE *fd;
- int retval = 0;
- struct config_device dev;
+ struct config_device *dev;
+ struct list_head *tmp;
+ char path[SYSFS_PATH_MAX];
+ int found;
+ char *temp = NULL;
- strcpy(filename, NAMEDEV_CONFIG_ROOT NAMEDEV_CONFIG_PERMISSION_FILE);
- dbg("opening %s to read as permissions config", filename);
- fd = fopen(filename, "r");
- if (fd == NULL) {
- dbg("Can't open %s", filename);
+ /* we have to have a sysfs device for NUMBER to work */
+ if (!sysfs_device)
return -ENODEV;
+
+ list_for_each(tmp, &config_device_list) {
+ dev = list_entry(tmp, struct config_device, node);
+ 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("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("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);
+ strfieldcpy(udev->symlink, dev->symlink);
+ dbg("found matching id '%s', '%s' becomes '%s'",
+ dev->id, class_dev->name, udev->name);
+ return 0;
}
+ return -ENODEV;
+}
- /* loop through the whole file */
- while (1) {
- /* get a line */
- temp = fgets(line, sizeof(line), fd);
- if (temp == NULL)
- break;
+static int do_topology(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
+{
+ struct config_device *dev;
+ struct list_head *tmp;
+ char path[SYSFS_PATH_MAX];
+ int found;
+ char *temp = NULL;
- dbg("read %s", temp);
+ /* we have to have a sysfs device for TOPOLOGY to work */
+ if (!sysfs_device)
+ return -ENODEV;
- /* eat the whitespace at the beginning of the line */
- while (isspace(*temp))
- ++temp;
+ list_for_each(tmp, &config_device_list) {
+ dev = list_entry(tmp, struct config_device, node);
+ if (dev->type != TOPOLOGY)
+ continue;
- /* no more line? */
- if (*temp == 0x00)
+ dbg("dev->bus='%s' sysfs_device->bus='%s'", dev->bus, sysfs_device->bus);
+ if (strcasecmp(dev->bus, sysfs_device->bus) != 0)
continue;
- /* see if this is a comment */
- if (*temp == COMMENT_CHARACTER)
+ 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)
continue;
- memset(&dev, 0x00, sizeof(dev));
+ strfieldcpy(udev->name, dev->name);
+ strfieldcpy(udev->symlink, dev->symlink);
+ dbg("found matching place '%s', '%s' becomes '%s'",
+ dev->place, class_dev->name, udev->name);
+ return 0;
+ }
+ return -ENODEV;
+}
- /* parse the line */
- temp2 = strsep(&temp, ":");
- strncpy(dev.name, temp2, sizeof(dev.name));
+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;
- temp2 = strsep(&temp, ":");
- strncpy(dev.owner, temp2, sizeof(dev.owner));
+ list_for_each(tmp, &config_device_list) {
+ dev = list_entry(tmp, struct config_device, node);
+ if (dev->type != REPLACE)
+ continue;
- temp2 = strsep(&temp, ":");
- strncpy(dev.group, temp2, sizeof(dev.owner));
+ dbg("compare name '%s' with '%s'", dev->kernel_name, class_dev->name);
+ if (strcmp_pattern(dev->kernel_name, class_dev->name) != 0)
+ continue;
- dev.mode = strtol(temp, NULL, 8);
+ strfieldcpy(udev->name, dev->name);
+ strfieldcpy(udev->symlink, dev->symlink);
+ dbg("found name, '%s' becomes '%s'", dev->kernel_name, udev->name);
+
+ return 0;
+ }
+ return -ENODEV;
+}
- dbg("name = %s, owner = %s, group = %s, mode = %x", dev.name, dev.owner, dev.group, dev.mode);
- retval = add_dev(&dev);
- if (retval) {
- dbg("add_dev returned with error %d", retval);
- goto exit;
+static void do_kernelname(struct sysfs_class_device *class_dev, struct udevice *udev)
+{
+ /* heh, this is pretty simple... */
+ strfieldcpy(udev->name, class_dev->name);
+}
+
+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;
+ 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;
+
+ /* 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;
+
+ /* 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) {
+ dbg("looking at block device");
+ if (isdigit(class_dev->path[strlen(class_dev->path)-1])) {
+ dbg("really is a partition");
+ 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 {
+ 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:
- fclose(fd);
- return retval;
-}
+ return sysfs_device;
+}
+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;
+ struct perm_device *perm;
+
+ udev->mode = 0;
+
+ /* 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);
+ } else {
+ 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, sysfs_device);
+ if (retval == 0)
+ goto found;
+
+ retval = do_label(class_dev, udev, sysfs_device);
+ if (retval == 0)
+ goto found;
+
+ retval = do_number(class_dev, udev, sysfs_device);
+ if (retval == 0)
+ goto found;
+
+ retval = do_topology(class_dev, udev, sysfs_device);
+ if (retval == 0)
+ goto found;
+
+ retval = do_replace(class_dev, udev, sysfs_device);
+ if (retval == 0)
+ goto found;
+
+ do_kernelname(class_dev, udev);
+ 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(class_dev);
+ udev->owner[0] = 0x00;
+ udev->group[0] = 0x00;
+ }
+ 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_config_dev_list();
+ dump_perm_dev_list();
return retval;
}
-
~ianmdlvl / elogind.git / blobdiff