[PATCH] add udevinfo to install target of Makefile

[elogind.git] / udev-add.c

diff --git a/udev-add.c b/udev-add.c
index 2f72613ea9fca7918b77908fd413e7d1d357cbde..586911acc2956bc368e1fc30190bc8c9604c735d 100644 (file)
--- a/udev-add.c
+++ b/udev-add.c
@@ -37,6 +37,7 @@
 #include "udev.h"
 #include "udev_version.h"
 #include "udev_dbus.h"
+#include "logging.h"
 #include "namedev.h"
 #include "udevdb.h"
 #include "libsysfs/libsysfs.h"
@@ -100,6 +101,7 @@ static int create_path(char *file)
 
 static int create_node(struct udevice *dev)
 {
+       struct stat stats;
        char filename[255];
        char linktarget[255];
        char *linkname;
@@ -140,6 +142,7 @@ static int create_node(struct udevice *dev)
        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, res);
        if (retval)
@@ -152,29 +155,29 @@ static int create_node(struct udevice *dev)
                dbg("chmod(%s, %#o) failed with error '%s'",
                    filename, dev->mode, strerror(errno));
 
-       if (*dev->owner) {
+       if (dev->owner[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]) {
                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;
                }
@@ -189,7 +192,7 @@ static int create_node(struct udevice *dev)
        }
 
        /* create symlink if requested */
-       if (*dev->symlink) {
+       if (dev->symlink[0]) {
                symlinks = dev->symlink;
                while (1) {
                        linkname = strsep(&symlinks, " ");
@@ -221,6 +224,16 @@ static int create_node(struct udevice *dev)
                                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)