*: shrink: use Vladimir's "o+" specifier instead of xatou(opt_param)
[oweals/busybox.git] / miscutils / devfsd.c
index 0aec94232f8c522d51dd95cca6182371fa20558c..1b88f050e85cc1d0f0d6b0181e345875970503c0 100644 (file)
     The postal address is:
       Richard Gooch, c/o ATNF, P. O. Box 76, Epping, N.S.W., 2121, Australia.
 */
-
-//#include <sys/wait.h>
-//#include <sys/ioctl.h>
-//#include <sys/socket.h>
-#include <sys/un.h>
-#include <dirent.h>
-#include <syslog.h>
-#include <sys/sysmacros.h>
 #include "libbb.h"
 #include "xregex.h"
+#include <syslog.h>
 
+#include <sys/un.h>
+#include <sys/sysmacros.h>
 
 /* Various defines taken from linux/major.h */
 #define IDE0_MAJOR     3
@@ -234,27 +229,21 @@ static char get_old_ide_name(unsigned , unsigned);
 static char *write_old_sd_name(char *, unsigned, unsigned, const char *);
 
 /* busybox functions */
-static void msg_logger(int pri, const char * fmt, ...)__attribute__((format(printf, 2, 3)));
-static void msg_logger_and_die(int pri, const char * fmt, ...)__attribute__((noreturn, format(printf, 2, 3)));
-static void do_ioctl_and_die(int fd, int request, unsigned long event_mask_flag);
-static void fork_and_execute(int die, char *arg0, char **arg);
-static int get_uid_gid(int, const char *);
+static int get_uid_gid(int flag, const char *string);
 static void safe_memcpy(char * dest, const char * src, int len);
-static unsigned int scan_dev_name_common(const char *d, unsigned int n, int addendum, char *ptr);
-static unsigned int scan_dev_name(const char *d, unsigned int n, char *ptr);
+static unsigned int scan_dev_name_common(const char *d, unsigned int n, int addendum, const char *ptr);
+static unsigned int scan_dev_name(const char *d, unsigned int n, const char *ptr);
 
 /* Structs and vars */
 static struct config_entry_struct *first_config = NULL;
 static struct config_entry_struct *last_config = NULL;
-static const char *mount_point = NULL;
+static char *mount_point = NULL;
 static volatile int caught_signal = FALSE;
 static volatile int caught_sighup = FALSE;
-static struct initial_symlink_struct
-{
+static struct initial_symlink_struct {
        const char *dest;
        const char *name;
-} initial_symlinks[] =
-{
+} initial_symlinks[] = {
        {"/proc/self/fd", "fd"},
        {"fd/0", "stdin"},
        {"fd/1", "stdout"},
@@ -262,12 +251,10 @@ static struct initial_symlink_struct
        {NULL, NULL},
 };
 
-static struct event_type
-{
+static struct event_type {
        unsigned int type;        /*  The DEVFSD_NOTIFY_* value                  */
        const char *config_name;  /*  The name used in the config file           */
-} event_types[] =
-{
+} event_types[] = {
        {DEVFSD_NOTIFY_REGISTERED,   "REGISTER"},
        {DEVFSD_NOTIFY_UNREGISTERED, "UNREGISTER"},
        {DEVFSD_NOTIFY_ASYNC_OPEN,   "ASYNC_OPEN"},
@@ -281,101 +268,33 @@ static struct event_type
 
 /* Busybox messages */
 
-static const char * const bb_msg_proto_rev                     = "protocol revision";
-static const char * const bb_msg_bad_config            = "bad %s config file: %s";
-static const char * const bb_msg_small_buffer          = "buffer too small";
-static const char * const bb_msg_variable_not_found = "variable: %s not found";
-
-/* Busybox functions  */
-static void msg_logger(int pri, const char * fmt, ...)
-{
-       va_list ap;
-       int ret;
-
-       va_start(ap, fmt);
-       ret = access("/dev/log", F_OK);
-       if (ret == 0) {
-               openlog(applet_name, 0, LOG_DAEMON);
-               vsyslog(pri , fmt, ap);
-               /* Man: A trailing newline is added when needed. */
-               closelog();
-       }
-       /* ENABLE_DEVFSD_VERBOSE is always enabled if msg_logger is used */
-       if ((ENABLE_DEVFSD_VERBOSE && ret) || ENABLE_DEBUG) {
-               bb_error_msg(fmt, ap);
-       }
-       va_end(ap);
-}
-
-static void msg_logger_and_die(int pri, const char* fmt, ...)
-{
-       va_list ap;
-
-       va_start(ap, fmt);
-       msg_logger(pri, fmt, ap);
-       va_end(ap);
-       exit(EXIT_FAILURE);
-}
+static const char bb_msg_proto_rev[] ALIGN1          = "protocol revision";
+static const char bb_msg_bad_config[] ALIGN1         = "bad %s config file: %s";
+static const char bb_msg_small_buffer[] ALIGN1       = "buffer too small";
+static const char bb_msg_variable_not_found[] ALIGN1 = "variable: %s not found";
 
 /* Busybox stuff */
-#if defined(CONFIG_DEVFSD_VERBOSE) || defined(CONFIG_DEBUG)
-#define devfsd_error_msg(fmt, args...)                bb_error_msg(fmt, ## args)
-#define devfsd_perror_msg_and_die(fmt, args...)       bb_perror_msg_and_die(fmt, ## args)
-#define devfsd_error_msg_and_die(fmt, args...)        bb_error_msg_and_die(fmt, ## args)
-#if defined(CONFIG_DEBUG)
-#define debug_msg_logger(x, fmt, args...)             msg_logger(x, fmt, ## args)
-#else
-#define debug_msg_logger(x, fmt, args...)
-#endif
+#if ENABLE_DEVFSD_VERBOSE || ENABLE_DEBUG
+#define info_logger(p, fmt, args...)                 bb_info_msg(fmt, ## args)
+#define msg_logger(p, fmt, args...)                  bb_error_msg(fmt, ## args)
+#define msg_logger_and_die(p, fmt, args...)          bb_error_msg_and_die(fmt, ## args)
+#define error_logger(p, fmt, args...)                bb_perror_msg(fmt, ## args)
+#define error_logger_and_die(p, fmt, args...)        bb_perror_msg_and_die(fmt, ## args)
 #else
-#define debug_msg_logger(x, fmt, args...)
+#define info_logger(p, fmt, args...)
 #define msg_logger(p, fmt, args...)
 #define msg_logger_and_die(p, fmt, args...)           exit(1)
-#define devfsd_perror_msg_and_die(fmt, args...)       exit(1)
-#define devfsd_error_msg_and_die(fmt, args...)        exit(1)
-#define devfsd_error_msg(fmt, args...)
+#define error_logger(p, fmt, args...)
+#define error_logger_and_die(p, fmt, args...)         exit(1)
 #endif
 
-static void do_ioctl_and_die(int fd, int request, unsigned long event_mask_flag)
-{
-       if (ioctl(fd, request, event_mask_flag) == -1)
-               msg_logger_and_die(LOG_ERR, "ioctl");
-}
-
-static void fork_and_execute(int die, char *arg0, char **arg)
-{
-       switch (fork()) {
-               case 0:
-                       /*  Child  */
-                       break;
-               case -1:
-                       /*  Parent: Error  : die or return */
-                       msg_logger(LOG_ERR,(char *)bb_msg_memory_exhausted);
-                       if (die)
-                               exit(EXIT_FAILURE);
-                       return;
-               default:
-                       /*  Parent : ok : return or exit  */
-                       if (arg0 != NULL) {
-                               wait(NULL);
-                               return;
-                       }
-                       exit(EXIT_SUCCESS);
-       }
-        /* Child : if arg0 != NULL do execvp */
-       if (arg0 != NULL) {
-               BB_EXECVP(arg0, arg);
-               msg_logger_and_die(LOG_ERR, "execvp");
-       }
-}
-
 static void safe_memcpy(char *dest, const char *src, int len)
 {
        memcpy(dest , src, len);
        dest[len] = '\0';
 }
 
-static unsigned int scan_dev_name_common(const char *d, unsigned int n, int addendum, char *ptr)
+static unsigned int scan_dev_name_common(const char *d, unsigned int n, int addendum, const char *ptr)
 {
        if (d[n - 4] == 'd' && d[n - 3] == 'i' && d[n - 2] == 's' && d[n - 1] == 'c')
                return 2 + addendum;
@@ -388,7 +307,7 @@ static unsigned int scan_dev_name_common(const char *d, unsigned int n, int adde
        return 0;
 }
 
-static unsigned int scan_dev_name(const char *d, unsigned int n, char *ptr)
+static unsigned int scan_dev_name(const char *d, unsigned int n, const char *ptr)
 {
        if (d[0] == 's' && d[1] == 'c' && d[2] == 's' && d[3] == 'i' && d[4] == '/') {
                if (d[n - 7] == 'g' && d[n - 6] == 'e' && d[n - 5] == 'n'
@@ -412,7 +331,7 @@ static unsigned int scan_dev_name(const char *d, unsigned int n, char *ptr)
 
 /*  Public functions follow  */
 
-int devfsd_main(int argc, char **argv);
+int devfsd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int devfsd_main(int argc, char **argv)
 {
        int print_version = FALSE;
@@ -430,61 +349,51 @@ int devfsd_main(int argc, char **argv)
        for (count = 2; count < argc; ++count) {
                if (argv[count][0] == '-') {
                        if (argv[count][1] == 'v' && !argv[count][2]) /* -v */
-                                       print_version = TRUE;
+                               print_version = TRUE;
                        else if (ENABLE_DEVFSD_FG_NP && argv[count][1] == 'f'
-                                       && argv[count][2] == 'g' && !argv[count][3]) /* -fg */
-                                       do_daemon = FALSE;
+                        && argv[count][2] == 'g' && !argv[count][3]) /* -fg */
+                               do_daemon = FALSE;
                        else if (ENABLE_DEVFSD_FG_NP && argv[count][1] == 'n'
-                                       && argv[count][2] == 'p' && !argv[count][3]) /* -np */
-                                       no_polling = TRUE;
+                        && argv[count][2] == 'p' && !argv[count][3]) /* -np */
+                               no_polling = TRUE;
                        else
                                bb_show_usage();
                }
        }
 
-       /* strip last / from mount point, so we don't need to check for it later */
-       while (argv[1][1] != '\0' && argv[1][strlen(argv[1]) - 1] == '/')
-               argv[1][strlen(argv[1]) - 1] = '\0';
+       mount_point = bb_simplify_path(argv[1]);
 
-       mount_point = argv[1];
-
-       if (chdir(mount_point) != 0)
-               devfsd_perror_msg_and_die(mount_point);
+       xchdir(mount_point);
 
        fd = xopen(".devfsd", O_RDONLY);
-
-       if (fcntl(fd, F_SETFD, FD_CLOEXEC) != 0)
-               devfsd_perror_msg_and_die("FD_CLOEXEC");
-
-       if (ioctl(fd, DEVFSDIOC_GET_PROTO_REV, &proto_rev) == -1)
-               msg_logger_and_die(LOG_ERR, "ioctl");
+       close_on_exec_on(fd);
+       xioctl(fd, DEVFSDIOC_GET_PROTO_REV, &proto_rev);
 
        /*setup initial entries */
-    for (curr = initial_symlinks; curr->dest != NULL; ++curr)
+       for (curr = initial_symlinks; curr->dest != NULL; ++curr)
                symlink(curr->dest, curr->name);
 
        /* NB: The check for CONFIG_FILE is done in read_config_file() */
 
-       if (print_version ||(DEVFSD_PROTOCOL_REVISION_DAEMON != proto_rev)) {
+       if (print_version || (DEVFSD_PROTOCOL_REVISION_DAEMON != proto_rev)) {
                printf("%s v%s\nDaemon %s:\t%d\nKernel-side %s:\t%d\n",
                                applet_name, DEVFSD_VERSION, bb_msg_proto_rev,
-                               DEVFSD_PROTOCOL_REVISION_DAEMON,bb_msg_proto_rev, proto_rev);
+                               DEVFSD_PROTOCOL_REVISION_DAEMON, bb_msg_proto_rev, proto_rev);
                if (DEVFSD_PROTOCOL_REVISION_DAEMON != proto_rev)
                        bb_error_msg_and_die("%s mismatch!", bb_msg_proto_rev);
                exit(EXIT_SUCCESS); /* -v */
        }
        /*  Tell kernel we are special(i.e. we get to see hidden entries)  */
-       do_ioctl_and_die(fd, DEVFSDIOC_SET_EVENT_MASK, 0);
+       xioctl(fd, DEVFSDIOC_SET_EVENT_MASK, 0);
 
+       /*  Set up SIGHUP and SIGUSR1 handlers  */
        sigemptyset(&new_action.sa_mask);
        new_action.sa_flags = 0;
-
-       /*  Set up SIGHUP and SIGUSR1 handlers  */
        new_action.sa_handler = signal_handler;
-       if (sigaction(SIGHUP, &new_action, NULL) != 0 || sigaction(SIGUSR1, &new_action, NULL) != 0)
-               devfsd_error_msg_and_die("sigaction");
+       sigaction_set(SIGHUP, &new_action);
+       sigaction_set(SIGUSR1, &new_action);
 
-       printf("%s v%s  started for %s\n",applet_name, DEVFSD_VERSION, mount_point);
+       printf("%s v%s started for %s\n", applet_name, DEVFSD_VERSION, mount_point);
 
        /*  Set umask so that mknod(2), open(2) and mkdir(2) have complete control over permissions  */
        umask(0);
@@ -494,11 +403,19 @@ int devfsd_main(int argc, char **argv)
 
        if (ENABLE_DEVFSD_FG_NP && no_polling)
                exit(0);
+
+       if (ENABLE_DEVFSD_VERBOSE || ENABLE_DEBUG)
+               logmode = LOGMODE_BOTH;
+       else if (do_daemon == TRUE)
+               logmode = LOGMODE_SYSLOG;
+       /* This is the default */
+       /*else
+               logmode = LOGMODE_STDIO; */
+
        if (do_daemon) {
                /*  Release so that the child can grab it  */
-               do_ioctl_and_die(fd, DEVFSDIOC_RELEASE_EVENT_QUEUE, 0);
-               fork_and_execute(DIE, NULL, NULL);
-               setsid();        /*  Prevent hangups and become pgrp leader         */
+               xioctl(fd, DEVFSDIOC_RELEASE_EVENT_QUEUE, 0);
+               bb_daemonize_or_rexec(0, argv);
        } else if (ENABLE_DEVFSD_FG_NP) {
                setpgid(0, 0);  /*  Become process group leader                    */
        }
@@ -509,8 +426,9 @@ int devfsd_main(int argc, char **argv)
                free_config();
                read_config_file((char*)CONFIG_FILE, FALSE, &event_mask);
                if (do_scan)
-                       dir_operation(SERVICE,mount_point,0,NULL);
+                       dir_operation(SERVICE, mount_point, 0, NULL);
        }
+       if (ENABLE_FEATURE_CLEAN_UP) free(mount_point);
 }   /*  End Function main  */
 
 
@@ -529,26 +447,24 @@ static void read_config_file(char *path, int optional, unsigned long *event_mask
        FILE *fp;
        char buf[STRING_LENGTH];
        char *line = NULL;
-
-       debug_msg_logger(LOG_INFO, "%s: %s", __FUNCTION__, path);
+       char *p;
 
        if (stat(path, &statbuf) == 0) {
                /* Don't read 0 length files: ignored */
                /*if (statbuf.st_size == 0)
                                return;*/
                if (S_ISDIR(statbuf.st_mode)) {
-                       /* strip last / from dirname so we don't need to check for it later */
-                       while (path && path[1] != '\0' && path[strlen(path) - 1] == '/')
-                               path[strlen(path) - 1] = '\0';
-
-                       dir_operation(READ_CONFIG, path, 0, event_mask);
+                       p = bb_simplify_path(path);
+                       dir_operation(READ_CONFIG, p, 0, event_mask);
+                       free(p);
                        return;
                }
-               if ((fp = fopen(path, "r")) != NULL) {
+               fp = fopen(path, "r");
+               if (fp != NULL) {
                        while (fgets(buf, STRING_LENGTH, fp) != NULL) {
                                /*  Skip whitespace  */
-                               for (line = buf; isspace(*line); ++line)
-                                       /*VOID*/;
+                               line = buf;
+                               line = skip_whitespace(line);
                                if (line[0] == '\0' || line[0] == '#')
                                        continue;
                                process_config_line(line, event_mask);
@@ -559,8 +475,8 @@ static void read_config_file(char *path, int optional, unsigned long *event_mask
                }
        } else {
 read_config_file_err:
-       if (optional ==  0  && errno == ENOENT)
-               msg_logger_and_die(LOG_ERR, "read config file: %s: %m", path);
+               if (optional == 0 && errno == ENOENT)
+                       error_logger_and_die(LOG_ERR, "read config file: %s", path);
        }
 }   /*  End Function read_config_file   */
 
@@ -581,23 +497,21 @@ static void process_config_line(const char *line, unsigned long *event_mask)
        int i;
 
        /* !!!! Only Uppercase Keywords in devsfd.conf */
-       static const char *const options[] = {
-               "CLEAR_CONFIG", "INCLUDE", "OPTIONAL_INCLUDE",
-               "RESTORE", "PERMISSIONS", "MODLOAD", "EXECUTE",
-               "COPY", "IGNORE", "MKOLDCOMPAT", "MKNEWCOMPAT",
-               "RMOLDCOMPAT", "RMNEWCOMPAT", 0
-       };
-
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
-       for (count = 0; count < MAX_ARGS; ++count) p[count][0] = '\0';
+       static const char options[] ALIGN1 =
+               "CLEAR_CONFIG\0""INCLUDE\0""OPTIONAL_INCLUDE\0"
+               "RESTORE\0""PERMISSIONS\0""MODLOAD\0""EXECUTE\0"
+               "COPY\0""IGNORE\0""MKOLDCOMPAT\0""MKNEWCOMPAT\0"
+               "RMOLDCOMPAT\0""RMNEWCOMPAT\0";
+
+       for (count = 0; count < MAX_ARGS; ++count)
+               p[count][0] = '\0';
        num_args = sscanf(line, "%s %s %s %s %s %s %s %s %s %s",
                        when, name, what,
                        p[0], p[1], p[2], p[3], p[4], p[5], p[6]);
 
-       i = index_in_str_array(options, when);
+       i = index_in_strings(options, when);
 
-       /*"CLEAR_CONFIG"*/
+       /* "CLEAR_CONFIG" */
        if (i == 0) {
                free_config();
                *event_mask = 0;
@@ -610,20 +524,19 @@ static void process_config_line(const char *line, unsigned long *event_mask)
        /* "INCLUDE" & "OPTIONAL_INCLUDE" */
        if (i == 1 || i == 2) {
                st_expr_expand(name, STRING_LENGTH, name, get_variable, NULL);
-               msg_logger(LOG_INFO, "%sinclude: %s", (toupper(when[0]) == 'I') ? "": "optional_", name);
+               info_logger(LOG_INFO, "%sinclude: %s", (toupper(when[0]) == 'I') ? "": "optional_", name);
                read_config_file(name, (toupper(when[0]) == 'I') ? FALSE : TRUE, event_mask);
                return;
        }
        /* "RESTORE" */
        if (i == 3) {
-               dir_operation(RESTORE,name, strlen(name),NULL);
+               dir_operation(RESTORE, name, strlen(name),NULL);
                return;
        }
        if (num_args < 3)
                goto process_config_line_err;
 
-       new = xmalloc(sizeof *new);
-       memset(new, 0, sizeof *new);
+       new = xzalloc(sizeof *new);
 
        for (count = 0; event_types[count].config_name != NULL; ++count) {
                if (strcasecmp(when, event_types[count].config_name) != 0)
@@ -632,18 +545,19 @@ static void process_config_line(const char *line, unsigned long *event_mask)
                break;
        }
        if (event_types[count].config_name == NULL) {
-               msg="WHEN in";
+               msg = "WHEN in";
                goto process_config_line_err;
        }
 
-       i = index_in_str_array(options, what);
+       i = index_in_strings(options, what);
 
        switch (i) {
                case 4: /* "PERMISSIONS" */
                        new->action.what = AC_PERMISSIONS;
                        /*  Get user and group  */
-                       if ((ptr = strchr(p[0], '.')) == NULL) {
-                               msg="UID.GID";
+                       ptr = strchr(p[0], '.');
+                       if (ptr == NULL) {
+                               msg = "UID.GID";
                                goto process_config_line_err; /*"missing '.' in UID.GID"*/
                        }
 
@@ -695,7 +609,7 @@ static void process_config_line(const char *line, unsigned long *event_mask)
                        new->action.what = i - 2;
                        break;
                default:
-                       msg ="WHAT in";
+                       msg = "WHAT in";
                        goto process_config_line_err;
                /*esac*/
        } /* switch (i) */
@@ -710,7 +624,8 @@ static void process_config_line(const char *line, unsigned long *event_mask)
                last_config->next = new;
        last_config = new;
        return;
-process_config_line_err:
+
+ process_config_line_err:
        msg_logger_and_die(LOG_ERR, bb_msg_bad_config, msg , line);
 }  /*  End Function process_config_line   */
 
@@ -723,13 +638,9 @@ static int do_servicing(int fd, unsigned long event_mask)
 {
        ssize_t bytes;
        struct devfsd_notify_struct info;
-       unsigned long tmp_event_mask;
-
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
 
-       /*  Tell devfs what events we care about  */
-       tmp_event_mask = event_mask;
-       do_ioctl_and_die(fd, DEVFSDIOC_SET_EVENT_MASK, tmp_event_mask);
+       /* (void*) cast is only in order to match prototype */
+       xioctl(fd, DEVFSDIOC_SET_EVENT_MASK, (void*)event_mask);
        while (!caught_signal) {
                errno = 0;
                bytes = read(fd,(char *) &info, sizeof info);
@@ -761,14 +672,13 @@ static void service_name(const struct devfsd_notify_struct *info)
        regmatch_t mbuf[MAX_SUBEXPR];
        struct config_entry_struct *entry;
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
        if (ENABLE_DEBUG && info->overrun_count > 0)
-               debug_msg_logger(LOG_ERR, "lost %u events", info->overrun_count);
+               msg_logger(LOG_ERR, "lost %u events", info->overrun_count);
 
        /*  Discard lookups on "/dev/log" and "/dev/initctl"  */
-       if (info->type == DEVFSD_NOTIFY_LOOKUP 
+       if (info->type == DEVFSD_NOTIFY_LOOKUP
                && ((info->devname[0] == 'l' && info->devname[1] == 'o'
-               && info->devname[2] == 'g' && !info->devname[3]) 
+               && info->devname[2] == 'g' && !info->devname[3])
                || (info->devname[0] == 'i' && info->devname[1] == 'n'
                && info->devname[2] == 'i' && info->devname[3] == 't'
                && info->devname[4] == 'c' && info->devname[5] == 't'
@@ -778,14 +688,12 @@ static void service_name(const struct devfsd_notify_struct *info)
 
        for (entry = first_config; entry != NULL; entry = entry->next) {
                /*  First check if action matches the type, then check if name matches */
-               if (info->type != entry->action.when 
+               if (info->type != entry->action.when
                || regexec(&entry->preg, info->devname, MAX_SUBEXPR, mbuf, 0) != 0)
                        continue;
                for (n = 0;(n < MAX_SUBEXPR) && (mbuf[n].rm_so != -1); ++n)
                        /* VOID */;
 
-               debug_msg_logger(LOG_INFO, "%s: action.what %d", __FUNCTION__, entry->action.what);
-
                switch (entry->action.what) {
                        case AC_PERMISSIONS:
                                action_permissions(info, entry);
@@ -825,13 +733,11 @@ static void action_permissions(const struct devfsd_notify_struct *info,
 {
        struct stat statbuf;
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
-       if (stat(info->devname, &statbuf) != 0  ||
-                chmod(info->devname,(statbuf.st_mode & S_IFMT) |(entry->u.permissions.mode & ~S_IFMT)) != 0 ||
-                chown(info->devname, entry->u.permissions.uid, entry->u.permissions.gid) != 0) {
-               msg_logger(LOG_ERR, "Can't chmod or chown: %s: %m",info->devname);
-       }
+       if (stat(info->devname, &statbuf) != 0
+        || chmod(info->devname, (statbuf.st_mode & S_IFMT) | (entry->u.permissions.mode & ~S_IFMT)) != 0
+        || chown(info->devname, entry->u.permissions.uid, entry->u.permissions.gid) != 0
+       )
+               error_logger(LOG_ERR, "Can't chmod or chown: %s", info->devname);
 }   /*  End Function action_permissions  */
 
 static void action_modload(const struct devfsd_notify_struct *info,
@@ -843,18 +749,16 @@ static void action_modload(const struct devfsd_notify_struct *info,
 */
 {
        char *argv[6];
-       char device[STRING_LENGTH];
 
-       argv[0] =(char*)MODPROBE;
-       argv[1] =(char*)MODPROBE_SWITCH_1; /* "-k" */
-       argv[2] =(char*)MODPROBE_SWITCH_2; /* "-C" */
-       argv[3] =(char*)CONFIG_MODULES_DEVFS;
-       argv[4] = device;
+       argv[0] = (char*)MODPROBE;
+       argv[1] = (char*)MODPROBE_SWITCH_1; /* "-k" */
+       argv[2] = (char*)MODPROBE_SWITCH_2; /* "-C" */
+       argv[3] = (char*)CONFIG_MODULES_DEVFS;
+       argv[4] = concat_path_file("/dev", info->devname); /* device */
        argv[5] = NULL;
 
-       snprintf(device, sizeof(device), "/dev/%s", info->devname);
-       debug_msg_logger(LOG_INFO, "%s: %s %s %s %s %s",__FUNCTION__, argv[0],argv[1],argv[2],argv[3],argv[4]);
-       fork_and_execute(DIE, argv[0], argv);
+       wait4pid(xspawn(argv));
+       free(argv[4]);
 }  /*  End Function action_modload  */
 
 static void action_execute(const struct devfsd_notify_struct *info,
@@ -874,7 +778,6 @@ static void action_execute(const struct devfsd_notify_struct *info,
        char *argv[MAX_ARGS + 1];
        char largv[MAX_ARGS + 1][STRING_LENGTH];
 
-       debug_msg_logger(LOG_INFO ,__FUNCTION__);
        gv_info.info = info;
        gv_info.devname = info->devname;
        snprintf(gv_info.devpath, sizeof(gv_info.devpath), "%s/%s", mount_point, info->devname);
@@ -886,7 +789,7 @@ static void action_execute(const struct devfsd_notify_struct *info,
                argv[count] = largv[count];
        }
        argv[count] = NULL;
-       fork_and_execute(NO_DIE, argv[0], argv);
+       wait4pid(spawn(argv));
 }   /*  End Function action_execute  */
 
 
@@ -908,8 +811,6 @@ static void action_copy(const struct devfsd_notify_struct *info,
        char source[STRING_LENGTH], destination[STRING_LENGTH];
        int ret = 0;
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        dest_stat.st_mode = 0;
 
        if ((info->type == DEVFSD_NOTIFY_CHANGE) && S_ISLNK(info->mode))
@@ -935,8 +836,8 @@ static void action_copy(const struct devfsd_notify_struct *info,
        else if ((info->type == DEVFSD_NOTIFY_CHANGE) &&(dest_stat.st_mode & S_ISVTX))
                new_mode |= S_ISVTX;
        ret = copy_inode(destination, &dest_stat, new_mode, source, &source_stat);
-       if (ENABLE_DEBUG && ret &&(errno != EEXIST))
-               debug_msg_logger(LOG_ERR, "copy_inode: %s to %s: %m", source, destination);
+       if (ENABLE_DEBUG && ret && (errno != EEXIST))
+               error_logger(LOG_ERR, "copy_inode: %s to %s", source, destination);
 }   /*  End Function action_copy  */
 
 static void action_compat(const struct devfsd_notify_struct *info, unsigned int action)
@@ -949,7 +850,7 @@ static void action_compat(const struct devfsd_notify_struct *info, unsigned int
        int ret;
        const char *compat_name = NULL;
        const char *dest_name = info->devname;
-       char *ptr=NULL;
+       const char *ptr;
        char compat_buf[STRING_LENGTH], dest_buf[STRING_LENGTH];
        int mode, host, bus, target, lun;
        unsigned int i;
@@ -977,17 +878,15 @@ static void action_compat(const struct devfsd_notify_struct *info, unsigned int
                        break;
                case AC_MKNEWCOMPAT:
                case AC_RMNEWCOMPAT:
-                       ptr = strrchr(info->devname, '/') + 1;
-                       i=scan_dev_name(info->devname, info->namelen, ptr);
-
-                       debug_msg_logger(LOG_INFO, "%s: scan_dev_name = %d", __FUNCTION__, i);
+                       ptr = bb_basename(info->devname);
+                       i = scan_dev_name(info->devname, info->namelen, ptr);
 
                        /* nothing found */
-                       if (i==0 || i > 9)
+                       if (i == 0 || i > 9)
                                return;
 
-                       sscanf(info->devname +((i<6)?5:4), "host%d/bus%d/target%d/lun%d/", &host, &bus, &target, &lun);
-                       snprintf(dest_buf, sizeof(dest_buf), "../%s", info->devname +((i>5)?4:0));
+                       sscanf(info->devname + ((i < 6) ? 5 : 4), "host%d/bus%d/target%d/lun%d/", &host, &bus, &target, &lun);
+                       snprintf(dest_buf, sizeof(dest_buf), "../%s", info->devname + (( i > 5) ? 4 : 0));
                        dest_name = dest_buf;
                        compat_name = compat_buf;
 
@@ -1010,7 +909,7 @@ static void action_compat(const struct devfsd_notify_struct *info, unsigned int
                                        mode = ptr[2] - 107; /* 1 or 2 */
                                if (ptr[2] ==  'a')
                                        mode = 3;
-                               sprintf(compat_buf, fmt [i], host, bus, target, lun, mode, rewind_);
+                               sprintf(compat_buf, fmt[i], host, bus, target, lun, mode, rewind_);
                        }
 
                        /* 9 == ide/host/mt */
@@ -1022,8 +921,6 @@ static void action_compat(const struct devfsd_notify_struct *info, unsigned int
        if (compat_name == NULL)
                return;
 
-       debug_msg_logger(LOG_INFO, "%s: %s", __FUNCTION__, compat_name);
-
        /*  Now decide what to do with it  */
        switch (action) {
                case AC_MKOLDCOMPAT:
@@ -1034,7 +931,7 @@ static void action_compat(const struct devfsd_notify_struct *info, unsigned int
                case AC_RMNEWCOMPAT:
                        ret = unlink(compat_name);
                        if (ENABLE_DEBUG && ret)
-                               debug_msg_logger(LOG_ERR, "unlink: %s: %m", compat_name);
+                               error_logger(LOG_ERR, "unlink: %s", compat_name);
                        break;
                /*esac*/
        } /* switch (action) */
@@ -1042,16 +939,14 @@ static void action_compat(const struct devfsd_notify_struct *info, unsigned int
 
 static void restore(char *spath, struct stat source_stat, int rootlen)
 {
-       char dpath[STRING_LENGTH];
+       char *dpath;
        struct stat dest_stat;
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        dest_stat.st_mode = 0;
-       snprintf(dpath, sizeof dpath, "%s%s", mount_point, spath + rootlen);
+       dpath = concat_path_file(mount_point, spath + rootlen);
        lstat(dpath, &dest_stat);
-
-       if (S_ISLNK(source_stat.st_mode) ||(source_stat.st_mode & S_ISVTX))
+       free(dpath);
+       if (S_ISLNK(source_stat.st_mode) || (source_stat.st_mode & S_ISVTX))
                copy_inode(dpath, &dest_stat,(source_stat.st_mode & ~S_ISVTX) , spath, &source_stat);
 
        if (S_ISDIR(source_stat.st_mode))
@@ -1077,13 +972,12 @@ static int copy_inode(const char *destpath, const struct stat *dest_stat,
        struct sockaddr_un un_addr;
        char symlink_val[STRING_LENGTH];
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        if ((source_stat->st_mode & S_IFMT) ==(dest_stat->st_mode & S_IFMT)) {
                /*  Same type  */
                if (S_ISLNK(source_stat->st_mode)) {
-                       if ((source_len = readlink(sourcepath, source_link, STRING_LENGTH - 1)) < 0
-                               || (dest_len   = readlink(destpath  , dest_link  , STRING_LENGTH - 1)) < 0
+                       source_len = readlink(sourcepath, source_link, STRING_LENGTH - 1);
+                       if ((source_len < 0)
+                        || (dest_len = readlink(destpath, dest_link, STRING_LENGTH - 1)) < 0
                        )
                                return FALSE;
                        source_link[source_len] = '\0';
@@ -1102,7 +996,8 @@ static int copy_inode(const char *destpath, const struct stat *dest_stat,
        unlink(destpath);
        switch (source_stat->st_mode & S_IFMT) {
                case S_IFSOCK:
-                       if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
+                       fd = socket(AF_UNIX, SOCK_STREAM, 0);
+                       if (fd < 0)
                                break;
                        un_addr.sun_family = AF_UNIX;
                        snprintf(un_addr.sun_path, sizeof(un_addr.sun_path), "%s", destpath);
@@ -1112,14 +1007,16 @@ static int copy_inode(const char *destpath, const struct stat *dest_stat,
                                break;
                        goto do_chown;
                case S_IFLNK:
-                       if ((val = readlink(sourcepath, symlink_val, STRING_LENGTH - 1)) < 0)
+                       val = readlink(sourcepath, symlink_val, STRING_LENGTH - 1);
+                       if (val < 0)
                                break;
                        symlink_val[val] = '\0';
                        if (symlink(symlink_val, destpath) == 0)
                                return TRUE;
                        break;
                case S_IFREG:
-                       if ((fd = open(destpath, O_RDONLY | O_CREAT, new_mode & ~S_IFMT)) < 0)
+                       fd = open(destpath, O_RDONLY | O_CREAT, new_mode & ~S_IFMT);
+                       if (fd < 0)
                                break;
                        close(fd);
                        if (chmod(destpath, new_mode & ~S_IFMT) != 0)
@@ -1150,8 +1047,6 @@ static void free_config(void)
        struct config_entry_struct *c_entry;
        void *next;
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        for (c_entry = first_config; c_entry != NULL; c_entry = next) {
                unsigned int count;
 
@@ -1184,15 +1079,10 @@ static int get_uid_gid(int flag, const char *string)
        if (ENABLE_DEVFSD_VERBOSE)
                msg = "user";
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
-       if (ENABLE_DEBUG && flag != UID && flag != GID)
-               msg_logger_and_die(LOG_ERR,"%s: flag != UID && flag != GID", __FUNCTION__);
-
        if (isdigit(string[0]) ||((string[0] == '-') && isdigit(string[1])))
                return atoi(string);
 
-       if (flag == UID && (pw_ent  = getpwnam(string)) != NULL)
+       if (flag == UID && (pw_ent = getpwnam(string)) != NULL)
                return pw_ent->pw_uid;
 
        if (flag == GID && (grp_ent = getgrnam(string)) != NULL)
@@ -1214,8 +1104,6 @@ static mode_t get_mode(const char *string)
        mode_t mode;
        int i;
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        if (isdigit(string[0]))
                return strtoul(string, NULL, 8);
        if (strlen(string) != 9)
@@ -1226,7 +1114,7 @@ static mode_t get_mode(const char *string)
        while (i > 0) {
                if (string[0] == 'r' || string[0] == 'w' || string[0] == 'x')
                        mode += i;
-               i = i/2;
+               i = i / 2;
                string++;
        }
        return mode;
@@ -1234,41 +1122,35 @@ static mode_t get_mode(const char *string)
 
 static void signal_handler(int sig)
 {
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        caught_signal = TRUE;
        if (sig == SIGHUP)
                caught_sighup = TRUE;
 
-       msg_logger(LOG_INFO, "Caught signal %d", sig);
+       info_logger(LOG_INFO, "Caught signal %d", sig);
 }   /*  End Function signal_handler  */
 
 static const char *get_variable(const char *variable, void *info)
 {
+       static char sbuf[sizeof(int)*3 + 2]; /* sign and NUL */
+       static char *hostname;
+
        struct get_variable_info *gv_info = info;
-       static char hostname[STRING_LENGTH], sbuf[STRING_LENGTH];
-       const char *field_names[] = { "hostname", "mntpt", "devpath", "devname",
-                                                                  "uid", "gid", "mode", hostname, mount_point,
-                                                                  gv_info->devpath, gv_info->devname, 0 };
+       const char *field_names[] = {
+                       "hostname", "mntpt", "devpath", "devname",
+                       "uid", "gid", "mode", hostname, mount_point,
+                       gv_info->devpath, gv_info->devname, NULL
+       };
        int i;
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
-       if (gethostname(hostname, STRING_LENGTH - 1) != 0)
-               msg_logger_and_die(LOG_ERR, "gethostname: %m");
-
-               /* Here on error we should do exit(RV_SYS_ERROR), instead we do exit(EXIT_FAILURE) */
-               hostname[STRING_LENGTH - 1] = '\0';
-
+       if (!hostname)
+               hostname = safe_gethostname();
        /* index_in_str_array returns i>=0  */
        i = index_in_str_array(field_names, variable);
 
        if (i > 6 || i < 0 || (i > 1 && gv_info == NULL))
-                       return NULL;
-       if (i >= 0 && i <= 3) {
-               debug_msg_logger(LOG_INFO, "%s: i=%d %s", __FUNCTION__, i, field_names[i + 7]);
+               return NULL;
+       if (i >= 0 && i <= 3)
                return field_names[i + 7];
-       }
 
        if (i == 4)
                sprintf(sbuf, "%u", gv_info->info->uid);
@@ -1276,9 +1158,6 @@ static const char *get_variable(const char *variable, void *info)
                sprintf(sbuf, "%u", gv_info->info->gid);
        else if (i == 6)
                sprintf(sbuf, "%o", gv_info->info->mode);
-
-       debug_msg_logger(LOG_INFO, "%s: %s", __FUNCTION__, sbuf);
-
        return sbuf;
 }   /*  End Function get_variable  */
 
@@ -1286,8 +1165,6 @@ static void service(struct stat statbuf, char *path)
 {
        struct devfsd_notify_struct info;
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        memset(&info, 0, sizeof info);
        info.type = DEVFSD_NOTIFY_REGISTERED;
        info.mode = statbuf.st_mode;
@@ -1314,37 +1191,31 @@ static void dir_operation(int type, const char * dir_name, int var, unsigned lon
        struct stat statbuf;
        DIR *dp;
        struct dirent *de;
-       char path[STRING_LENGTH];
+       char *path;
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
-       if ((dp = opendir(dir_name))==NULL) {
-               debug_msg_logger(LOG_ERR, "opendir: %s: %m", dir_name);
+       dp = warn_opendir(dir_name);
+       if (dp == NULL)
                return;
-       }
 
        while ((de = readdir(dp)) != NULL) {
 
                if (de->d_name && DOT_OR_DOTDOT(de->d_name))
                        continue;
-               snprintf(path, sizeof(path), "%s/%s", dir_name, de->d_name);
-               debug_msg_logger(LOG_ERR, "%s: %s", __FUNCTION__, path);
-
-               if (lstat(path, &statbuf) != 0) {
-                       debug_msg_logger(LOG_ERR, "%s: %s: %m", __FUNCTION__, path);
-                       continue;
-               }
-               switch (type) {
-                       case SERVICE:
-                               service(statbuf, path);
-                               break;
-                       case RESTORE:
-                               restore(path, statbuf, var);
-                               break;
-                       case READ_CONFIG:
-                               read_config_file(path, var, event_mask);
-                               break;
+               path = concat_path_file(dir_name, de->d_name);
+               if (lstat(path, &statbuf) == 0) {
+                       switch (type) {
+                               case SERVICE:
+                                       service(statbuf, path);
+                                       break;
+                               case RESTORE:
+                                       restore(path, statbuf, var);
+                                       break;
+                               case READ_CONFIG:
+                                       read_config_file(path, var, event_mask);
+                                       break;
+                       }
                }
+               free(path);
        }
        closedir(dp);
 }   /*  End Function do_scan_and_service  */
@@ -1356,16 +1227,12 @@ static int mksymlink(const char *oldpath, const char *newpath)
     [RETURNS] 0 on success, else -1.
 */
 {
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        if (!make_dir_tree(newpath))
                return -1;
 
        if (symlink(oldpath, newpath) != 0) {
-               if (errno != EEXIST) {
-                       debug_msg_logger(LOG_ERR, "%s: %s to %s: %m", __FUNCTION__, oldpath, newpath);
+               if (errno != EEXIST)
                        return -1;
-               }
        }
        return 0;
 }   /*  End Function mksymlink  */
@@ -1377,12 +1244,8 @@ static int make_dir_tree(const char *path)
     [RETURNS] TRUE on success, else FALSE.
 */
 {
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
-       if (bb_make_directory(dirname((char *)path), -1, FILEUTILS_RECUR) == -1) {
-               debug_msg_logger(LOG_ERR, "%s: %s: %m",__FUNCTION__, path);
+       if (bb_make_directory(dirname((char *)path), -1, FILEUTILS_RECUR) == -1)
                return FALSE;
-       }
        return TRUE;
 } /*  End Function make_dir_tree  */
 
@@ -1409,8 +1272,6 @@ static int expand_expression(char *output, unsigned int outsize,
 {
        char temp[STRING_LENGTH];
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        if (!st_expr_expand(temp, STRING_LENGTH, input, get_variable_func, info))
                return FALSE;
        expand_regexp(output, outsize, temp, devname, ex, numexp);
@@ -1438,8 +1299,6 @@ static void expand_regexp(char *output, size_t outsize, const char *input,
        const char last_exp = '0' - 1 + numex;
        int c = -1;
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        /*  Guarantee NULL termination by writing an explicit '\0' character into
        the very last byte  */
        if (outsize)
@@ -1529,7 +1388,7 @@ const char *get_old_name(const char *devname, unsigned int namelen,
 */
 {
        const char *compat_name = NULL;
-       char *ptr;
+       const char *ptr;
        struct translate_struct *trans;
        unsigned int i;
        char mode;
@@ -1555,8 +1414,6 @@ const char *get_old_name(const char *devname, unsigned int namelen,
                NULL
        };
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        for (trans = translate_table; trans->match != NULL; ++trans) {
                 len = strlen(trans->match);
 
@@ -1568,7 +1425,7 @@ const char *get_old_name(const char *devname, unsigned int namelen,
                }
        }
 
-       ptr = (strrchr(devname, '/') + 1);
+       ptr = bb_basename(devname);
        i = scan_dev_name(devname, namelen, ptr);
 
        if (i > 0 && i < 13)
@@ -1576,15 +1433,13 @@ const char *get_old_name(const char *devname, unsigned int namelen,
        else
                return NULL;
 
-       debug_msg_logger(LOG_INFO, "%s: scan_dev_name = %d", __FUNCTION__, i);
-
        /* 1 == scsi/generic, 3 == scsi/cd, 10 == sbp/ */
        if (i == 1 || i == 3 || i == 10)
                sprintf(buffer, fmt[i], minor);
 
        /* 2 ==scsi/disc, 4 == scsi/part */
        if (i == 2 || i == 4)
-               compat_name = write_old_sd_name(buffer, major, minor,((i == 2)?"":(ptr + 4)));
+               compat_name = write_old_sd_name(buffer, major, minor,((i == 2) ? "" : (ptr + 4)));
 
        /* 5 == scsi/mt */
        if (i == 5) {
@@ -1617,10 +1472,6 @@ const char *get_old_name(const char *devname, unsigned int namelen,
                indexx = atoi(devname + 5);
                sprintf(buffer, fmt[i], (devname[4] == 'm') ? 'p' : 't', pty1[indexx >> 4], pty2[indexx & 0x0f]);
        }
-
-       if (ENABLE_DEBUG && compat_name != NULL)
-               msg_logger(LOG_INFO, "%s: compat_name  %s", __FUNCTION__, compat_name);
-
        return compat_name;
 }   /*  End Function get_old_name  */
 
@@ -1635,8 +1486,6 @@ static char get_old_ide_name(unsigned int major, unsigned int minor)
        char c = 'a';           /*  97 */
        int i = IDE0_MAJOR;
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        /* I hope it works like the previous code as it saves a few bytes. Tito ;P */
        do {
                if (i == IDE0_MAJOR || i == IDE1_MAJOR || i == IDE2_MAJOR
@@ -1671,8 +1520,6 @@ static char *write_old_sd_name(char *buffer,
 {
        unsigned int disc_index;
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        if (major == 8) {
                sprintf(buffer, "sd%c%s", 'a' + (minor >> 4), part);
                return buffer;
@@ -1716,8 +1563,6 @@ int st_expr_expand(char *output, unsigned int length, const char *input,
        struct passwd *pwent;
        char buffer[BUFFER_SIZE], tmp[STRING_LENGTH];
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        if (length > BUFFER_SIZE)
                length = BUFFER_SIZE;
        for (; TRUE; ++input) {
@@ -1733,8 +1578,9 @@ int st_expr_expand(char *output, unsigned int length, const char *input,
                                ch = input[1];
                                if (isspace(ch) ||(ch == '/') ||(ch == '\0')) {
                                        /* User's own home directory: leave separator for next time */
-                                       if ((env = getenv("HOME")) == NULL) {
-                                               msg_logger(LOG_INFO, bb_msg_variable_not_found, "HOME");
+                                       env = getenv("HOME");
+                                       if (env == NULL) {
+                                               info_logger(LOG_INFO, bb_msg_variable_not_found, "HOME");
                                                return FALSE;
                                        }
                                        len = strlen(env);
@@ -1746,14 +1592,15 @@ int st_expr_expand(char *output, unsigned int length, const char *input,
                                }
                                /*  Someone else's home directory  */
                                for (ptr = ++input; !isspace(ch) && (ch != '/') && (ch != '\0'); ch = *++ptr)
-                                       /* VOID */ ;
+                                       /* VOID */;
                                len = ptr - input;
                                if (len >= sizeof tmp)
                                        goto st_expr_expand_out;
                                safe_memcpy(tmp, input, len);
                                input = ptr - 1;
-                               if ((pwent = getpwnam(tmp)) == NULL) {
-                                       msg_logger(LOG_INFO, "no pwent for: %s", tmp);
+                               pwent = getpwnam(tmp);
+                               if (pwent == NULL) {
+                                       info_logger(LOG_INFO, "no pwent for: %s", tmp);
                                        return FALSE;
                                }
                                len = strlen(pwent->pw_dir);
@@ -1778,7 +1625,7 @@ int st_expr_expand(char *output, unsigned int length, const char *input,
        }
        return FALSE;
 st_expr_expand_out:
-       msg_logger(LOG_INFO, bb_msg_small_buffer);
+       info_logger(LOG_INFO, bb_msg_small_buffer);
        return FALSE;
 }   /*  End Function st_expr_expand  */
 
@@ -1809,8 +1656,6 @@ static const char *expand_variable(char *buffer, unsigned int length,
        const char *env, *ptr;
        char tmp[STRING_LENGTH];
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        ch = input[0];
        if (ch == '$') {
                /*  Special case for "$$": PID  */
@@ -1827,15 +1672,16 @@ static const char *expand_variable(char *buffer, unsigned int length,
        if (ch != '{') {
                /*  Simple variable expansion  */
                for (ptr = input; isalnum(ch) || (ch == '_') || (ch == ':'); ch = *++ptr)
-                       /* VOID */ ;
+                       /* VOID */;
                len = ptr - input;
                if ((size_t)len >= sizeof tmp)
                        goto expand_variable_out;
 
                safe_memcpy(tmp, input, len);
                input = ptr - 1;
-               if ((env = get_variable_v2(tmp, func, info)) == NULL) {
-                       msg_logger(LOG_INFO, bb_msg_variable_not_found, tmp);
+               env = get_variable_v2(tmp, func, info);
+               if (env == NULL) {
+                       info_logger(LOG_INFO, bb_msg_variable_not_found, tmp);
                        return NULL;
                }
                len = strlen(env);
@@ -1863,7 +1709,7 @@ static const char *expand_variable(char *buffer, unsigned int length,
                return input + len;
        }
        if (ch != ':' || ptr[1] != '-') {
-               msg_logger(LOG_INFO, "illegal char in var name");
+               info_logger(LOG_INFO, "illegal char in var name");
                return NULL;
        }
        /*  It's that handy "${var:-word}" expression. Check if var is defined  */
@@ -1886,7 +1732,7 @@ static const char *expand_variable(char *buffer, unsigned int length,
                                --open_braces;
                                break;
                        case '\0':
-                               msg_logger(LOG_INFO,"\"}\" not found in: %s", input);
+                               info_logger(LOG_INFO,"\"}\" not found in: %s", input);
                                return NULL;
                        default:
                                break;
@@ -1894,7 +1740,8 @@ static const char *expand_variable(char *buffer, unsigned int length,
        }
        --ptr;
        /*  At this point ptr should point to closing brace of "${var:-word}"  */
-       if ((env = get_variable_v2(tmp, func, info)) != NULL) {
+       env = get_variable_v2(tmp, func, info);
+       if (env != NULL) {
                /*  Found environment variable, so skip the input to the closing brace
                        and return the variable  */
                input = ptr;
@@ -1925,7 +1772,7 @@ static const char *expand_variable(char *buffer, unsigned int length,
        *out_pos += len;
        return input;
 expand_variable_out:
-       msg_logger(LOG_INFO, bb_msg_small_buffer);
+       info_logger(LOG_INFO, bb_msg_small_buffer);
        return NULL;
 }   /*  End Function expand_variable  */
 
@@ -1943,8 +1790,6 @@ static const char *get_variable_v2(const char *variable,
 {
        const char *value;
 
-       debug_msg_logger(LOG_INFO, __FUNCTION__);
-
        if (func != NULL) {
                value = (*func)(variable, info);
                if (value != NULL)