#include <pwd.h>
#endif
+#include "libsysfs/sysfs/libsysfs.h"
#include "udev.h"
#include "udev_version.h"
#include "udev_dbus.h"
+#include "udev_selinux.h"
+#include "logging.h"
#include "namedev.h"
#include "udevdb.h"
-#include "libsysfs/libsysfs.h"
#include "klibc_fixups.h"
/*
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", &udev->major, &udev->minor) != 2)
+ if (sscanf(attr->value, "%u:%u", &udev->major, &udev->minor) != 2)
goto exit;
-
dbg("found major=%d, minor=%d", udev->major, udev->minor);
retval = 0;
int retval;
struct stat stats;
- strncpy(p, file, sizeof(p));
+ strfieldcpy(p, file);
pos = strchr(p+1, '/');
while (1) {
pos = strchr(pos+1, '/');
*pos = 0x00;
if (stat(p, &stats)) {
retval = mkdir(p, 0755);
- if (retval) {
+ if (retval != 0) {
dbg("mkdir(%s) failed with error '%s'",
p, strerror(errno));
return retval;
return 0;
}
-/*
- * we possibly want to add some symlinks here
- * only numeric owner/group id's are supported
- */
-static int create_node(struct udevice *dev)
+static int make_node(char *filename, int major, int minor, unsigned int mode, uid_t uid, gid_t gid)
+{
+ int retval;
+
+ retval = mknod(filename, mode, makedev(major, minor));
+ if (retval != 0) {
+ dbg("mknod(%s, %#o, %u, %u) failed with error '%s'",
+ filename, mode, major, minor, strerror(errno));
+ return retval;
+ }
+
+ dbg("chmod(%s, %#o)", filename, mode);
+ retval = chmod(filename, mode);
+ if (retval != 0) {
+ dbg("chmod(%s, %#o) failed with error '%s'",
+ filename, mode, strerror(errno));
+ return retval;
+ }
+
+ if (uid != 0 || gid != 0) {
+ dbg("chown(%s, %u, %u)", filename, uid, gid);
+ retval = chown(filename, uid, gid);
+ if (retval != 0) {
+ dbg("chown(%s, %u, %u) failed with error '%s'",
+ filename, uid, gid, strerror(errno));
+ return retval;
+ }
+ }
+
+ return 0;
+}
+
+static int create_node(struct udevice *dev, int fake)
{
+ struct stat stats;
char filename[255];
char linktarget[255];
+ char partitionname[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));
- strncat(filename, dev->name, sizeof(filename));
-
-#ifdef __KLIBC__
- res = (dev->major << 8) | (dev->minor);
-#else
- res = makedev(dev->major, dev->minor);
-#endif
+ strfieldcpy(filename, udev_root);
+ strfieldcat(filename, dev->name);
switch (dev->type) {
case 'b':
if (strrchr(dev->name, '/'))
create_path(filename);
- dbg("mknod(%s, %#o, %u, %u)", filename, dev->mode, 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));
-
- 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) {
+ if (dev->owner[0] != '\0') {
char *endptr;
unsigned long id = strtoul(dev->owner, &endptr, 10);
- if (*endptr == 0x00)
+ if (endptr[0] == '\0')
uid = (uid_t) id;
else {
struct passwd *pw = getpwnam(dev->owner);
- if (!pw)
- dbg("user unknown '%s'", dev->owner);
+ if (pw == NULL)
+ dbg("specified user unknown '%s'", dev->owner);
else
uid = pw->pw_uid;
}
}
- if (*dev->group) {
+ if (dev->group[0] != '\0') {
char *endptr;
unsigned long id = strtoul(dev->group, &endptr, 10);
- if (*endptr == 0x00)
+ if (endptr[0] == '\0')
gid = (gid_t) id;
else {
struct group *gr = getgrnam(dev->group);
- if (!gr)
- dbg("group unknown '%s'", 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));
+ if (!fake) {
+ info("creating device node '%s'", filename);
+ make_node(filename, dev->major, dev->minor, dev->mode, uid, gid);
+ } else {
+ info("creating device node '%s', major = '%d', minor = '%d', "
+ "mode = '%#o', uid = '%d', gid = '%d'", filename,
+ dev->major, dev->minor, (mode_t)dev->mode, uid, gid);
+ }
+
+ /* create partitions if requested */
+ if (dev->partitions > 0) {
+ info("creating device partition nodes '%s[1-%i]'", filename, dev->partitions);
+ if (!fake) {
+ for (i = 1; i <= dev->partitions; i++) {
+ sprintf(partitionname, "%s%i", filename, i);
+ make_node(partitionname, dev->major,
+ dev->minor + i, dev->mode, uid, gid);
+ }
+ }
}
+ if (!fake)
+ selinux_add_node(filename);
/* create symlink if requested */
- if (*dev->symlink) {
- strncpy(filename, udev_root, sizeof(filename));
- strncat(filename, dev->symlink, sizeof(filename));
- dbg("symlink '%s' to node '%s' requested", filename, dev->name);
- if (strrchr(dev->symlink, '/'))
- create_path(filename);
-
- /* optimize relative link */
- linktarget[0] = '\0';
- i = 0;
- tail = 0;
- while ((dev->name[i] == dev->symlink[i]) && dev->name[i]) {
- if (dev->name[i] == '/')
- tail = i+1;
- i++;
- }
- while (dev->symlink[i]) {
- if (dev->symlink[i] == '/')
- strcat(linktarget, "../");
- i++;
- }
+ if (dev->symlink[0] != '\0') {
+ symlinks = dev->symlink;
+ while (1) {
+ linkname = strsep(&symlinks, " ");
+ if (linkname == NULL || linkname[0] == '\0')
+ break;
+
+ strfieldcpy(filename, udev_root);
+ strfieldcat(filename, linkname);
+ dbg("symlink '%s' to node '%s' requested", filename, dev->name);
+ if (!fake)
+ 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] != '\0') {
+ if (linkname[i] == '/')
+ strfieldcat(linktarget, "../");
+ i++;
+ }
- if (*linktarget == '\0')
- strcpy(linktarget, "./");
- strcat(linktarget, &dev->name[tail]);
+ if (linktarget[0] == '\0')
+ strfieldcpy(linktarget, "./");
+ strfieldcat(linktarget, &dev->name[tail]);
+
+ /* unlink existing files to ensure that our symlink is created */
+ if (!fake && (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));
+ dbg("symlink(%s, %s)", linktarget, filename);
+ if (!fake) {
+ retval = symlink(linktarget, filename);
+ if (retval != 0)
+ dbg("symlink(%s, %s) failed with error '%s'",
+ linktarget, filename, strerror(errno));
+ }
+ }
}
return retval;
char dev_path[SYSFS_PATH_MAX];
struct sysfs_class_device *class_dev = NULL;
- strcpy(dev_path, sysfs_path);
- strcat(dev_path, device_name);
-
+ strfieldcpy(dev_path, sysfs_path);
+ strfieldcat(dev_path, device_name);
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);
int loop = SECONDS_TO_WAIT_FOR_DEV;
int retval;
- strcpy(filename, sysfs_path);
- strcat(filename, path);
- strcat(filename, "/dev");
+ strfieldcpy(filename, sysfs_path);
+ strfieldcat(filename, path);
+ strfieldcat(filename, "/dev");
while (loop--) {
struct stat buf;
dbg("looking for '%s'", filename);
retval = stat(filename, &buf);
- if (!retval)
+ if (retval == 0)
goto exit;
/* sleep to give the kernel a chance to create the dev file */
return retval;
}
-int udev_add_device(char *path, char *subsystem)
+int udev_add_device(char *path, char *subsystem, int fake)
{
struct sysfs_class_device *class_dev = NULL;
struct udevice dev;
dev.type = 'c';
retval = sleep_for_dev(path);
- if (retval)
+ if (retval != 0)
goto exit;
class_dev = get_class_dev(path);
goto exit;
retval = get_major_minor(class_dev, &dev);
- if (retval) {
+ if (retval != 0) {
dbg("get_major_minor failed");
goto exit;
}
retval = namedev_name_device(class_dev, &dev);
- if (retval)
+ if (retval != 0)
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.");
+ if (!fake) {
+ 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.");
+ }
dbg("name='%s'", dev.name);
- retval = create_node(&dev);
+ retval = create_node(&dev, fake);
- if (retval == 0)
+ if ((retval == 0) && (!fake))
sysbus_send_create(&dev, path);
exit:
~ianmdlvl / elogind.git / blobdiff