#include <grp.h>
#ifndef __KLIBC__
#include <pwd.h>
+#include <utmp.h>
#endif
+#include "libsysfs/sysfs/libsysfs.h"
#include "udev.h"
+#include "udev_lib.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"
+#define LOCAL_USER "$local"
+
/*
* Right now the major/minor of a device is stored in a file called
* "dev" in sysfs.
int retval;
struct stat stats;
- strncpy(p, file, sizeof(p));
+ strfieldcpy(p, file);
pos = strchr(p+1, '/');
while (1) {
pos = strchr(pos+1, '/');
return 0;
}
-static int create_node(struct udevice *dev, int fake)
+/* get the local logged in user */
+static void set_to_local_user(char *user)
+{
+ struct utmp *u;
+ time_t recent = 0;
+
+ strfieldcpymax(user, default_owner_str, OWNER_SIZE);
+ setutent();
+ while (1) {
+ u = getutent();
+ if (u == NULL)
+ break;
+
+ /* is this a user login ? */
+ if (u->ut_type != USER_PROCESS)
+ continue;
+
+ /* is this a local login ? */
+ if (strcmp(u->ut_host, ""))
+ continue;
+
+ if (u->ut_time > recent) {
+ recent = u->ut_time;
+ strfieldcpymax(user, u->ut_user, OWNER_SIZE);
+ dbg("local user is '%s'", user);
+ break;
+ }
+ }
+ endutent();
+}
+
+/* Used to unlink existing files to ensure that our new file/symlink is created */
+static int unlink_entry(char *filename)
{
struct stat stats;
- char filename[255];
- char linktarget[255];
- char partitionname[255];
- char *linkname;
- char *symlinks;
+ int retval = 0;
+
+ if (lstat(filename, &stats) == 0) {
+ if ((stats.st_mode & S_IFMT) != S_IFDIR) {
+ retval = unlink(filename);
+ if (retval) {
+ dbg("unlink(%s) failed with error '%s'",
+ filename, strerror(errno));
+ }
+ }
+ }
+ return retval;
+}
+
+static int create_node(struct udevice *dev, int fake)
+{
+ char filename[NAME_SIZE];
+ char linkname[NAME_SIZE];
+ char linktarget[NAME_SIZE];
+ char partitionname[NAME_SIZE];
int retval = 0;
uid_t uid = 0;
gid_t gid = 0;
int i;
int tail;
+ char *pos;
+ int len;
- strncpy(filename, udev_root, sizeof(filename));
- strncat(filename, dev->name, sizeof(filename));
+ strfieldcpy(filename, udev_root);
+ strfieldcat(filename, dev->name);
switch (dev->type) {
case 'b':
if (endptr[0] == '\0')
uid = (uid_t) id;
else {
- struct passwd *pw = getpwnam(dev->owner);
+ struct passwd *pw;
+ if (strncmp(dev->owner, LOCAL_USER, sizeof(LOCAL_USER)) == 0)
+ set_to_local_user(dev->owner);
+
+ pw = getpwnam(dev->owner);
if (pw == NULL)
dbg("specified user unknown '%s'", dev->owner);
else
}
if (!fake) {
+ unlink_entry(filename);
info("creating device node '%s'", filename);
make_node(filename, dev->major, dev->minor, dev->mode, uid, gid);
} else {
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);
+ strfieldcpy(partitionname, filename);
+ strintcat(partitionname, i);
+ unlink_entry(partitionname);
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[0] != '\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 (!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] == '/')
- strcat(linktarget, "../");
- i++;
- }
+ foreach_strpart(dev->symlink, " ", pos, len) {
+ strfieldcpymax(linkname, pos, len+1);
+ 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] == '\0')
- strcpy(linktarget, "./");
- strcat(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));
- }
- }
+ strfieldcat(linktarget, &dev->name[tail]);
- 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));
- }
+ if (!fake)
+ unlink_entry(filename);
+
+ 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));
}
}
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... */
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;
~ianmdlvl / elogind.git / blobdiff