X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev_add.c;h=e05710ce81f820638d90b1a3caa01c9938b3f385;hp=f384ea96e50043405fb37abfb70705f721024a8a;hb=57e1a2770c4d85edd377488906c437f6d1e9b369;hpb=fd9efc00a2e477423185c993b8ec4570ef3ee07d

diff --git a/udev_add.c b/udev_add.c
index f384ea96e..e05710ce8 100644
--- a/udev_add.c
+++ b/udev_add.c
@@ -34,40 +34,20 @@
 #include <sys/socket.h>
 #include <sys/ioctl.h>
 #include <linux/sockios.h>
-#include <pwd.h>
 
 #include "libsysfs/sysfs/libsysfs.h"
+#include "udev_libc_wrapper.h"
 #include "udev.h"
 #include "udev_utils.h"
+#include "udev_sysfs.h"
 #include "udev_version.h"
 #include "logging.h"
 #include "namedev.h"
 #include "udev_db.h"
 #include "udev_selinux.h"
 
-/*
- * the major/minor of a device is stored in a file called "dev"
- * The number is stored in decimal values in the format: M:m
- */
-static int get_major_minor(struct sysfs_class_device *class_dev, struct udevice *udev)
-{
-	struct sysfs_attribute *attr = NULL;
-
-	attr = sysfs_get_classdev_attr(class_dev, "dev");
-	if (attr == NULL)
-		goto error;
-	dbg("dev='%s'", attr->value);
 
-	if (sscanf(attr->value, "%u:%u", &udev->major, &udev->minor) != 2)
-		goto error;
-	dbg("found major=%d, minor=%d", udev->major, udev->minor);
-
-	return 0;
-error:
-	return -1;
-}
-
-int udev_make_node(struct udevice *udev, const char *file, int major, int minor, mode_t mode, uid_t uid, gid_t gid)
+int udev_make_node(struct udevice *udev, const char *file, dev_t devt, mode_t mode, uid_t uid, gid_t gid)
 {
 	struct stat stats;
 	int retval = 0;
@@ -77,7 +57,7 @@ int udev_make_node(struct udevice *udev, const char *file, int major, int minor,
 
 	/* preserve node with already correct numbers, to not change the inode number */
 	if (((stats.st_mode & S_IFMT) == S_IFBLK || (stats.st_mode & S_IFMT) == S_IFCHR) &&
-	    (stats.st_rdev == makedev(major, minor))) {
+	    (stats.st_rdev == devt)) {
 		dbg("preserve file '%s', cause it has correct dev_t", file);
 		selinux_setfilecon(file, udev->kernel_name, stats.st_mode);
 		goto perms;
@@ -90,26 +70,22 @@ int udev_make_node(struct udevice *udev, const char *file, int major, int minor,
 
 create:
 	switch (udev->type) {
-	case 'b':
+	case BLOCK:
 		mode |= S_IFBLK;
 		break;
-	case 'c':
-	case 'u':
+	case CLASS:
 		mode |= S_IFCHR;
 		break;
-	case 'p':
-		mode |= S_IFIFO;
-		break;
 	default:
 		dbg("unknown node type %c\n", udev->type);
 		return -EINVAL;
 	}
 
 	selinux_setfscreatecon(file, udev->kernel_name, mode);
-	retval = mknod(file, mode, makedev(major, minor));
+	retval = mknod(file, mode, devt);
 	if (retval != 0) {
 		dbg("mknod(%s, %#o, %u, %u) failed with error '%s'",
-		    file, mode, major, minor, strerror(errno));
+		    file, mode, major(devt), minor(devt), strerror(errno));
 		goto exit;
 	}
 
@@ -137,12 +113,11 @@ static int create_node(struct udevice *udev, struct sysfs_class_device *class_de
 {
 	char filename[NAME_SIZE];
 	char partitionname[NAME_SIZE];
+	struct name_entry *name_loop;
 	uid_t uid = 0;
 	gid_t gid = 0;
 	int tail;
-	char *pos;
-	int len;
-		int i;
+	int i;
 
 	snprintf(filename, NAME_SIZE, "%s/%s", udev_root, udev->name);
 	filename[NAME_SIZE-1] = '\0';
@@ -157,15 +132,8 @@ static int create_node(struct udevice *udev, struct sysfs_class_device *class_de
 
 		if (endptr[0] == '\0')
 			uid = (uid_t) id;
-		else {
-			struct passwd *pw;
-
-			pw = getpwnam(udev->owner);
-			if (pw == NULL)
-				dbg("specified user unknown '%s'", udev->owner);
-			else
-				uid = pw->pw_uid;
-		}
+		else
+			uid = lookup_user(udev->owner);
 	}
 
 	if (udev->group[0] != '\0') {
@@ -174,23 +142,18 @@ static int create_node(struct udevice *udev, struct sysfs_class_device *class_de
 
 		if (endptr[0] == '\0')
 			gid = (gid_t) id;
-		else {
-			struct group *gr = getgrnam(udev->group);
-			if (gr == NULL)
-				dbg("specified group unknown '%s'", udev->group);
-			else
-				gid = gr->gr_gid;
-		}
+		else
+			gid = lookup_group(udev->group);
 	}
 
 	if (!udev->test_run) {
 		info("creating device node '%s'", filename);
-		if (udev_make_node(udev, filename, udev->major, udev->minor, udev->mode, uid, gid) != 0)
+		if (udev_make_node(udev, filename, udev->devt, udev->mode, uid, gid) != 0)
 			goto error;
 	} else {
 		info("creating device node '%s', major = '%d', minor = '%d', "
 		     "mode = '%#o', uid = '%d', gid = '%d'", filename,
-		     udev->major, udev->minor, udev->mode, uid, gid);
+		     major(udev->devt), minor(udev->devt), udev->mode, uid, gid);
 	}
 
 	/* create all_partitions if requested */
@@ -208,38 +171,39 @@ static int create_node(struct udevice *udev, struct sysfs_class_device *class_de
 		info("creating device partition nodes '%s[1-%i]'", filename, udev->partitions);
 		if (!udev->test_run) {
 			for (i = 1; i <= udev->partitions; i++) {
-				strfieldcpy(partitionname, filename);
-				strintcat(partitionname, i);
-				udev_make_node(udev, partitionname, udev->major, udev->minor + i, udev->mode, uid, gid);
+				dev_t part_devt;
+
+				snprintf(partitionname, NAME_SIZE, "%s%d", filename, i);
+				partitionname[NAME_SIZE-1] = '\0';
+				part_devt = makedev(major(udev->devt), minor(udev->devt)+1);
+				udev_make_node(udev, partitionname, part_devt, udev->mode, uid, gid);
 			}
 		}
 	}
 
 	/* create symlink(s) if requested */
-	foreach_strpart(udev->symlink, " ", pos, len) {
-		char linkname[NAME_SIZE];
+	list_for_each_entry(name_loop, &udev->symlink_list, node) {
 		char linktarget[NAME_SIZE];
 
-		strfieldcpymax(linkname, pos, len+1);
-		snprintf(filename, NAME_SIZE, "%s/%s", udev_root, linkname);
+		snprintf(filename, NAME_SIZE, "%s/%s", udev_root, name_loop->name);
 		filename[NAME_SIZE-1] = '\0';
 
 		dbg("symlink '%s' to node '%s' requested", filename, udev->name);
 		if (!udev->test_run)
-			if (strrchr(linkname, '/'))
+			if (strchr(filename, '/'))
 				create_path(filename);
 
 		/* optimize relative link */
 		linktarget[0] = '\0';
 		i = 0;
 		tail = 0;
-		while ((udev->name[i] == linkname[i]) && udev->name[i]) {
+		while (udev->name[i] && (udev->name[i] == name_loop->name[i])) {
 			if (udev->name[i] == '/')
 				tail = i+1;
 			i++;
 		}
-		while (linkname[i] != '\0') {
-			if (linkname[i] == '/')
+		while (name_loop->name[i] != '\0') {
+			if (name_loop->name[i] == '/')
 				strfieldcat(linktarget, "../");
 			i++;
 		}
@@ -294,9 +258,9 @@ int udev_add_device(struct udevice *udev, struct sysfs_class_device *class_dev)
 	char *pos;
 	int retval = 0;
 
-	if (udev->type == 'b' || udev->type == 'c') {
-		retval = get_major_minor(class_dev, udev);
-		if (retval != 0) {
+	if (udev->type == BLOCK || udev->type == CLASS) {
+		udev->devt = get_devt(class_dev);
+		if (!udev->devt) {
 			dbg("no dev-file found, do nothing");
 			return 0;
 		}
@@ -309,7 +273,7 @@ int udev_add_device(struct udevice *udev, struct sysfs_class_device *class_dev)
 
 	selinux_init();
 
-	if (udev->type == 'b' || udev->type == 'c') {
+	if (udev->type == BLOCK || udev->type == CLASS) {
 		retval = create_node(udev, class_dev);
 		if (retval != 0)
 			goto exit;
@@ -322,7 +286,7 @@ int udev_add_device(struct udevice *udev, struct sysfs_class_device *class_dev)
 		snprintf(udev->devname, NAME_SIZE, "%s/%s", udev_root, udev->name);
 		udev->devname[NAME_SIZE-1] = '\0';
 
-	} else if (udev->type == 'n') {
+	} else if (udev->type == NET) {
 		/* look if we want to change the name of the netif */
 		if (strcmp(udev->name, udev->kernel_name) != 0) {
 			retval = rename_net_if(udev);