#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <grp.h>
+#ifndef __KLIBC__
+#include <pwd.h>
+#endif
#include "udev.h"
#include "udev_version.h"
+#include "udev_dbus.h"
+#include "logging.h"
#include "namedev.h"
#include "udevdb.h"
#include "libsysfs/libsysfs.h"
-
-static char sysfs_path[SYSFS_PATH_MAX];
+#include "klibc_fixups.h"
/*
* Right now the major/minor of a device is stored in a file called
* mm is the minor
* The value is in decimal.
*/
-static int get_major_minor(struct sysfs_class_device *class_dev, int *major, int *minor)
+static int get_major_minor(struct sysfs_class_device *class_dev, struct udevice *udev)
{
int retval = -ENODEV;
+ struct sysfs_attribute *attr = NULL;
- char *dev;
-
- dev = sysfs_get_value_from_attributes(class_dev->directory->attributes, "dev");
- if (dev == NULL)
+ attr = sysfs_get_classdev_attr(class_dev, "dev");
+ if (attr == NULL)
goto exit;
+ dbg("dev='%s'", attr->value);
- dbg("dev = %s", dev);
-
- if (sscanf(dev, "%u:%u", major, minor) != 2)
+ if (sscanf(attr->value, "%u:%u", &udev->major, &udev->minor) != 2)
goto exit;
-
- dbg("found major = %d, minor = %d", *major, *minor);
+ dbg("found major=%d, minor=%d", udev->major, udev->minor);
retval = 0;
exit:
return retval;
}
-/*
- * We also want to add some permissions here, and possibly some symlinks
- */
+static int create_path(char *file)
+{
+ char p[NAME_SIZE];
+ char *pos;
+ int retval;
+ struct stat stats;
+
+ strncpy(p, file, sizeof(p));
+ pos = strchr(p+1, '/');
+ while (1) {
+ pos = strchr(pos+1, '/');
+ if (pos == NULL)
+ break;
+ *pos = 0x00;
+ if (stat(p, &stats)) {
+ retval = mkdir(p, 0755);
+ if (retval) {
+ dbg("mkdir(%s) failed with error '%s'",
+ p, strerror(errno));
+ return retval;
+ }
+ dbg("created '%s'", p);
+ }
+ *pos = '/';
+ }
+ return 0;
+}
+
static int create_node(struct udevice *dev)
{
+ struct stat stats;
char filename[255];
+ char linktarget[255];
+ char *linkname;
+ char *symlinks;
int retval = 0;
+ uid_t uid = 0;
+ gid_t gid = 0;
+ dev_t res;
+ int i;
+ int tail;
- strncpy(filename, UDEV_ROOT, sizeof(filename));
+ strncpy(filename, udev_root, sizeof(filename));
strncat(filename, dev->name, sizeof(filename));
+#ifdef __KLIBC__
+ res = (dev->major << 8) | (dev->minor);
+#else
+ res = makedev(dev->major, dev->minor);
+#endif
+
switch (dev->type) {
case 'b':
dev->mode |= S_IFBLK;
return -EINVAL;
}
+ /* create parent directories if needed */
+ if (strrchr(dev->name, '/'))
+ create_path(filename);
+
+ info("creating device node '%s'", filename);
dbg("mknod(%s, %#o, %u, %u)", filename, dev->mode, dev->major, dev->minor);
- retval = mknod(filename, dev->mode, makedev(dev->major, dev->minor));
+ retval = mknod(filename, dev->mode, res);
if (retval)
dbg("mknod(%s, %#o, %u, %u) failed with error '%s'",
filename, dev->mode, dev->major, dev->minor, strerror(errno));
- // FIXME set the ownership of the node
+ dbg("chmod(%s, %#o)", filename, dev->mode);
+ retval = chmod(filename, dev->mode);
+ if (retval)
+ dbg("chmod(%s, %#o) failed with error '%s'",
+ filename, dev->mode, strerror(errno));
+
+ if (dev->owner[0]) {
+ char *endptr;
+ unsigned long id = strtoul(dev->owner, &endptr, 10);
+ if (endptr[0] == '\0')
+ uid = (uid_t) id;
+ else {
+ struct passwd *pw = getpwnam(dev->owner);
+ if (pw == NULL)
+ dbg("specified user unknown '%s'", dev->owner);
+ else
+ uid = pw->pw_uid;
+ }
+ }
+
+ if (dev->group[0]) {
+ char *endptr;
+ unsigned long id = strtoul(dev->group, &endptr, 10);
+ if (endptr[0] == '\0')
+ gid = (gid_t) id;
+ else {
+ struct group *gr = getgrnam(dev->group);
+ if (gr == NULL)
+ dbg("specified group unknown '%s'", dev->group);
+ else
+ gid = gr->gr_gid;
+ }
+ }
+
+ if (uid || gid) {
+ dbg("chown(%s, %u, %u)", filename, uid, gid);
+ retval = chown(filename, uid, gid);
+ if (retval)
+ dbg("chown(%s, %u, %u) failed with error '%s'",
+ filename, uid, gid, strerror(errno));
+ }
+
+ /* create symlink if requested */
+ if (dev->symlink[0]) {
+ symlinks = dev->symlink;
+ while (1) {
+ linkname = strsep(&symlinks, " ");
+ if (linkname == NULL || linkname[0] == '\0')
+ break;
+
+ strncpy(filename, udev_root, sizeof(filename));
+ strncat(filename, linkname, sizeof(filename));
+ dbg("symlink '%s' to node '%s' requested", filename, dev->name);
+ if (strrchr(linkname, '/'))
+ create_path(filename);
+
+ /* optimize relative link */
+ linktarget[0] = '\0';
+ i = 0;
+ tail = 0;
+ while ((dev->name[i] == linkname[i]) && dev->name[i]) {
+ if (dev->name[i] == '/')
+ tail = i+1;
+ i++;
+ }
+ while (linkname[i]) {
+ if (linkname[i] == '/')
+ strcat(linktarget, "../");
+ i++;
+ }
+
+ if (*linktarget == '\0')
+ strcpy(linktarget, "./");
+ strcat(linktarget, &dev->name[tail]);
+
+ /* unlink existing non-directories to ensure that our symlink
+ * is created */
+ if (lstat(filename, &stats) == 0) {
+ if ((stats.st_mode & S_IFMT) != S_IFDIR) {
+ if (unlink(filename))
+ dbg("unlink(%s) failed with error '%s'",
+ filename, strerror(errno));
+ }
+ }
+
+ dbg("symlink(%s, %s)", linktarget, filename);
+ retval = symlink(linktarget, filename);
+ if (retval)
+ dbg("symlink(%s, %s) failed with error '%s'",
+ linktarget, filename, strerror(errno));
+ }
+ }
+
return retval;
}
strcpy(dev_path, sysfs_path);
strcat(dev_path, device_name);
-
- dbg("looking at %s", dev_path);
+ dbg("looking at '%s'", dev_path);
/* open up the sysfs class device for this thing... */
- class_dev = sysfs_open_class_device(dev_path);
+ class_dev = sysfs_open_class_device_path(dev_path);
if (class_dev == NULL) {
- dbg ("sysfs_open_class_device failed");
+ dbg ("sysfs_open_class_device_path failed");
goto exit;
}
- dbg("class_dev->name = %s", class_dev->name);
+ dbg("class_dev->name='%s'", class_dev->name);
exit:
return class_dev;
* If it doesn't happen in about 10 seconds, give up.
*/
#define SECONDS_TO_WAIT_FOR_DEV 10
-int sleep_for_dev(char *path)
+static int sleep_for_dev(char *path)
{
char filename[SYSFS_PATH_MAX + 6];
- struct stat buf;
- int loop = 0;
- int retval = -ENODEV;
+ int loop = SECONDS_TO_WAIT_FOR_DEV;
+ int retval;
strcpy(filename, sysfs_path);
strcat(filename, path);
strcat(filename, "/dev");
- while (loop < SECONDS_TO_WAIT_FOR_DEV) {
- dbg("looking for %s", filename);
+ while (loop--) {
+ struct stat buf;
+
+ dbg("looking for '%s'", filename);
retval = stat(filename, &buf);
- if (retval == 0) {
- retval = 0;
+ if (!retval)
goto exit;
- }
- /* sleep for a second or two to give the kernel a chance to
- * create the dev file */
+ /* sleep to give the kernel a chance to create the dev file */
sleep(1);
}
retval = -ENODEV;
int udev_add_device(char *path, char *subsystem)
{
- struct sysfs_class_device *class_dev;
+ struct sysfs_class_device *class_dev = NULL;
struct udevice dev;
- struct device_attr attr;
int retval = -EINVAL;
+ memset(&dev, 0x00, sizeof(dev));
+
/* for now, the block layer is the only place where block devices are */
if (strcmp(subsystem, "block") == 0)
dev.type = 'b';
else
dev.type = 'c';
- retval = sysfs_get_mnt_path(sysfs_path, SYSFS_PATH_MAX);
- dbg("sysfs_path = %s", sysfs_path);
- if (retval) {
- dbg("sysfs_get_mnt_path failed");
- goto exit;
- }
-
retval = sleep_for_dev(path);
if (retval)
goto exit;
if (class_dev == NULL)
goto exit;
- retval = namedev_name_device(class_dev, &attr);
- if (retval)
- return retval;
-
- retval = get_major_minor(class_dev, &dev.major, &dev.minor);
+ retval = get_major_minor(class_dev, &dev);
if (retval) {
dbg("get_major_minor failed");
goto exit;
}
- strcpy(dev.name, attr.name);
- strcpy(dev.owner, attr.owner);
- strcpy(dev.group, attr.group);
- dev.mode = attr.mode;
-
+ retval = namedev_name_device(class_dev, &dev);
+ if (retval)
+ goto exit;
+
retval = udevdb_add_dev(path, &dev);
if (retval != 0)
dbg("udevdb_add_dev failed, but we are going to try to create the node anyway. "
"But remove might not work properly for this device.");
- sysfs_close_class_device(class_dev);
-
- dbg("name = %s", dev.name);
+ dbg("name='%s'", dev.name);
retval = create_node(&dev);
+ if (retval == 0)
+ sysbus_send_create(&dev, path);
+
exit:
+ if (class_dev)
+ sysfs_close_class_device(class_dev);
+
return retval;
}
-
~ianmdlvl / elogind.git / blobdiff