--- /dev/null
+--- busybox-1.1.0/util-linux/mdev.c.orig 2006-01-11 05:44:22.000000000 +0000
++++ busybox-1.1.0/util-linux/mdev.c 2006-02-06 17:06:24.107287250 +0000
+@@ -1,7 +1,7 @@
+ /* vi:set ts=4:
+- *
++ *
+ * mdev - Mini udev for busybox
+- *
++ *
+ * Copyright 2005 Rob Landley <rob@landley.net>
+ * Copyright 2005 Frank Sorenson <frank@tuxrocks.com>
+ *
+@@ -18,94 +18,90 @@
+ #include <sys/stat.h>
+ #include <sys/types.h>
+ #include <unistd.h>
++#include <stdlib.h>
+ #include "busybox.h"
+ #include "xregex.h"
+
+ #define DEV_PATH "/dev"
++#define MDEV_CONF "/etc/mdev.conf"
+
+ #include <busybox.h>
+
+ /* mknod in /dev based on a path like "/sys/block/hda/hda1" */
+ static void make_device(char *path)
+ {
+- char *device_name,*s;
+- int major,minor,type,len,fd;
+- int mode=0660;
+- uid_t uid=0;
+- gid_t gid=0;
++ char *device_name, *s;
++ int major, minor, type, len, fd;
++ int mode = 0660;
++ uid_t uid = 0;
++ gid_t gid = 0;
+
+- RESERVE_CONFIG_BUFFER(temp,PATH_MAX);
++ RESERVE_CONFIG_BUFFER(temp, PATH_MAX);
+
+ /* Try to read major/minor string */
+-
++
+ snprintf(temp, PATH_MAX, "%s/dev", path);
+ fd = open(temp, O_RDONLY);
+ len = read(fd, temp, PATH_MAX-1);
+- if (len<1) goto end;
+- temp[len] = 0;
+ close(fd);
+-
++ if (len < 1) goto end;
++
+ /* Determine device name, type, major and minor */
+-
++
+ device_name = strrchr(path, '/') + 1;
+- type = strncmp(path+5, "block/" ,6) ? S_IFCHR : S_IFBLK;
+- major = minor = 0;
+- for (s = temp; *s; s++) {
+- if (*s == ':') {
+- major = minor;
+- minor = 0;
+- } else {
+- minor *= 10;
+- minor += (*s) - '0';
+- }
+- }
++ type = strncmp(path+5, "block/", 6) ? S_IFCHR : S_IFBLK;
++ if (sscanf(temp, "%d:%d", &major, &minor) != 2)
++ goto end;
+
+ /* If we have a config file, look up permissions for this device */
+-
++
+ if (ENABLE_FEATURE_MDEV_CONF) {
+- char *conf,*pos,*end;
++ char *conf, *pos, *end;
+
+ /* mmap the config file */
+- if (-1!=(fd=open("/etc/mdev.conf",O_RDONLY))) {
+- len=lseek(fd,0,SEEK_END);
+- conf=mmap(NULL,len,PROT_READ,MAP_PRIVATE,fd,0);
++ if (-1 != (fd=open(MDEV_CONF,O_RDONLY))) {
++ len = lseek(fd, 0, SEEK_END);
++ conf = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, 0);
+ if (conf) {
+- int line=0;
++ int line = 0;
+
+ /* Loop through lines in mmaped file*/
+- for (pos=conf;pos-conf<len;) {
++ for (pos=conf; pos-conf<len;) {
+ int field;
+ char *end2;
+-
++
+ line++;
+ /* find end of this line */
+- for(end=pos;end-conf<len && *end!='\n';end++);
++ for(end=pos; end-conf<len && *end!='\n'; end++)
++ ;
+
+ /* Three fields: regex, uid:gid, mode */
+- for (field=3;field;field--) {
++ for (field=3; field; field--) {
+ /* Skip whitespace */
+- while (pos<end && isspace(*pos)) pos++;
+- if (pos==end || *pos=='#') break;
+- for (end2=pos;
+- end2<end && !isspace(*end2) && *end2!='#'; end2++);
+- switch(field) {
++ while (pos<end && isspace(*pos))
++ pos++;
++ if (pos==end || *pos=='#')
++ break;
++ for (end2=pos; end2<end && !isspace(*end2) && *end2!='#'; end2++)
++ ;
++
++ switch (field) {
+ /* Regex to match this device */
+ case 3:
+ {
+- char *regex=strndupa(pos,end2-pos);
++ char *regex = strndupa(pos,end2-pos);
+ regex_t match;
+ regmatch_t off;
+ int result;
+
+- /* Is this it? */
++ /* Is this it? */
+ xregcomp(&match,regex,REG_EXTENDED);
+- result=regexec(&match,device_name,1,&off,0);
++ result = regexec(&match,device_name,1,&off,0);
+ regfree(&match);
+-
++
+ /* If not this device, skip rest of line */
+- if(result || off.rm_so
+- || off.rm_eo!=strlen(device_name))
+- goto end_line;
++ if (result || off.rm_so || off.rm_eo!=strlen(device_name))
++ goto end_line;
+
+ break;
+ }
+@@ -115,48 +111,54 @@
+ char *s2;
+
+ /* Find : */
+- for(s=pos;s<end2 && *s!=':';s++);
+- if(s==end2) goto end_line;
++ for(s=pos; s<end2 && *s!=':'; s++)
++ ;
++ if (s == end2)
++ goto end_line;
+
+ /* Parse UID */
+- uid=strtoul(pos,&s2,10);
+- if(s!=s2) {
++ uid = strtoul(pos,&s2,10);
++ if (s != s2) {
+ struct passwd *pass;
+- pass=getpwnam(strndupa(pos,s-pos));
+- if(!pass) goto end_line;
+- uid=pass->pw_uid;
++ pass = getpwnam(strndupa(pos,s-pos));
++ if (!pass)
++ goto end_line;
++ uid = pass->pw_uid;
+ }
+ s++;
+ /* parse GID */
+- gid=strtoul(s,&s2,10);
+- if(end2!=s2) {
++ gid = strtoul(s,&s2,10);
++ if (end2 != s2) {
+ struct group *grp;
+- grp=getgrnam(strndupa(s,end2-s));
+- if(!grp) goto end_line;
+- gid=grp->gr_gid;
++ grp = getgrnam(strndupa(s,end2-s));
++ if (!grp)
++ goto end_line;
++ gid = grp->gr_gid;
+ }
+ break;
+ }
+ /* mode */
+ case 1:
+ {
+- mode=strtoul(pos,&pos,8);
+- if(pos!=end2) goto end_line;
+- goto found_device;
++ mode = strtoul(pos,&pos,8);
++ if (pos != end2)
++ goto end_line;
++ else
++ goto found_device;
+ }
+ }
+- pos=end2;
++ pos = end2;
+ }
+ end_line:
+ /* Did everything parse happily? */
+ if (field && field!=3)
+- bb_error_msg_and_die("Bad line %d",line);
++ bb_error_msg_and_die("Bad line %d",line);
+
+ /* Next line */
+- pos=++end;
++ pos = ++end;
+ }
+ found_device:
+- munmap(conf,len);
++ munmap(conf, len);
+ }
+ close(fd);
+ }
+@@ -168,7 +170,7 @@
+ bb_perror_msg_and_die("mknod %s failed", temp);
+
+ if (ENABLE_FEATURE_MDEV_CONF) chown(temp,uid,gid);
+-
++
+ end:
+ RELEASE_CONFIG_BUFFER(temp);
+ }
+@@ -179,50 +181,64 @@
+ static void find_dev(char *path)
+ {
+ DIR *dir;
+- int len=strlen(path);
++ size_t len = strlen(path);
++ struct dirent *entry;
+
+- if (!(dir = opendir(path)))
+- bb_perror_msg_and_die("No %s",path);
++ if ((dir = opendir(path)) == NULL)
++ return;
+
+- for (;;) {
+- struct dirent *entry = readdir(dir);
+-
+- if (!entry) break;
++ while ((entry = readdir(dir)) != NULL) {
+
+ /* Skip "." and ".." (also skips hidden files, which is ok) */
+
+- if (entry->d_name[0]=='.') continue;
++ if (entry->d_name[0] == '.')
++ continue;
+
+ if (entry->d_type == DT_DIR) {
+ snprintf(path+len, PATH_MAX-len, "/%s", entry->d_name);
+ find_dev(path);
+ path[len] = 0;
+ }
+-
++
+ /* If there's a dev entry, mknod it */
+-
+- if (strcmp(entry->d_name, "dev")) make_device(path);
++
++ if (!strcmp(entry->d_name, "dev")) make_device(path);
+ }
+-
++
+ closedir(dir);
+ }
+
+ int mdev_main(int argc, char *argv[])
+ {
+- if (argc > 1) {
+- if (argc == 2 && !strcmp(argv[1],"-s")) {
+- RESERVE_CONFIG_BUFFER(temp,PATH_MAX);
+- strcpy(temp,"/sys/block");
+- find_dev(temp);
+- strcpy(temp,"/sys/class");
+- find_dev(temp);
+- if(ENABLE_FEATURE_CLEAN_UP)
+- RELEASE_CONFIG_BUFFER(temp);
+- return 0;
+- } else bb_show_usage();
+- }
+-
+-/* hotplug support goes here */
+-
++ char *action;
++ char *env_path;
++ RESERVE_CONFIG_BUFFER(temp,PATH_MAX);
++
++ /* Scan */
++
++ if (argc == 2 && !strcmp(argv[1],"-s")) {
++ strcpy(temp,"/sys/block");
++ find_dev(temp);
++ strcpy(temp,"/sys/class");
++ find_dev(temp);
++
++ /* Hotplug */
++
++ } else {
++ action = getenv("ACTION");
++ env_path = getenv("DEVPATH");
++ if (!action || !env_path)
++ bb_show_usage();
++
++ if (!strcmp(action, "add")) {
++ sprintf(temp, "/sys%s", env_path);
++ make_device(temp);
++ } else if (!strcmp(action, "remove")) {
++ sprintf(temp, "%s/%s", DEV_PATH, strrchr(env_path, '/') + 1);
++ unlink(temp);
++ }
++ }
++
++ if (ENABLE_FEATURE_CLEAN_UP) RELEASE_CONFIG_BUFFER(temp);
+ return 0;
+ }
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