X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=util-linux%2Fmdev.c;h=b4042c07ecaeda7bbabc2a9ad5c4707d36a13caf;hb=dd8adde3866ac22bd510348b733bb29e1662ac6d;hp=acc5012d468d7653bd81a6a0cea0f0d1a0a4385e;hpb=e9a7a6212b5881bd29ee5936b492f4d8899df8bb;p=oweals%2Fbusybox.git diff --git a/util-linux/mdev.c b/util-linux/mdev.c index acc5012d4..b4042c07e 100644 --- a/util-linux/mdev.c +++ b/util-linux/mdev.c @@ -1,6 +1,5 @@ /* vi: set sw=4 ts=4: */ /* - * * mdev - Mini udev for busybox * * Copyright 2005 Rob Landley @@ -8,256 +7,611 @@ * * Licensed under GPL version 2, see file LICENSE in this tarball for details. */ - -#include "busybox.h" +#include "libbb.h" #include "xregex.h" -#define DEV_PATH "/dev" +/* "mdev -s" scans /sys/class/xxx, looking for directories which have dev + * file (it is of the form "M:m\n"). Example: /sys/class/tty/tty0/dev + * contains "4:0\n". Directory name is taken as device name, path component + * directly after /sys/class/ as subsystem. In this example, "tty0" and "tty". + * Then mdev creates the /dev/device_name node. + * If /sys/class/.../dev file does not exist, mdev still may act + * on this device: see "@|$|*command args..." parameter in config file. + * + * mdev w/o parameters is called as hotplug helper. It takes device + * and subsystem names from $DEVPATH and $SUBSYSTEM, extracts + * maj,min from "/sys/$DEVPATH/dev" and also examines + * $ACTION ("add"/"delete") and $FIRMWARE. + * + * If action is "add", mdev creates /dev/device_name similarly to mdev -s. + * (todo: explain "delete" and $FIRMWARE) + * + * If /etc/mdev.conf exists, it may modify /dev/device_name's properties. + * /etc/mdev.conf file format: + * + * [-][subsystem/]device user:grp mode [>|=path] [@|$|*command args...] + * [-]@maj,min[-min2] user:grp mode [>|=path] [@|$|*command args...] + * [-]$envvar=val user:grp mode [>|=path] [@|$|*command args...] + * + * Leading minus in 1st field means "don't stop on this line", otherwise + * search is stopped after the matching line is encountered. + * + * The device name or "subsystem/device" combo is matched against 1st field + * (which is a regex), or maj,min is matched against 1st field, + * or specified environment variable (as regex) is matched against 1st field. + * + * $envvar=val format is useful for loading modules for hot-plugged devices + * which do not have driver loaded yet. In this case /sys/class/.../dev + * does not exist, but $MODALIAS is set to needed module's name + * (actually, an alias to it) by kernel. This rule instructs mdev + * to load the module and exit: + * $MODALIAS=.* 0:0 660 @modprobe "$MODALIAS" + * The kernel will generate another hotplug event when /sys/class/.../dev + * file appears. + * + * When line matches, the device node is created, chmod'ed and chown'ed, + * moved to path, and if >path, a symlink to moved node is created, + * all this if /sys/class/.../dev exists. + * Examples: + * =loop/ - moves to /dev/loop + * >disk/sda%1 - moves to /dev/disk/sdaN, makes /dev/sdaN a symlink + * + * Then "command args..." is executed (via sh -c 'command args...'). + * @:execute on creation, $:on deletion, *:on both. + * This happens regardless of /sys/class/.../dev existence. + */ -struct mdev_globals -{ +struct globals { int root_major, root_minor; -} mdev_globals; + char *subsystem; +} FIX_ALIASING; +#define G (*(struct globals*)&bb_common_bufsiz1) + +/* Prevent infinite loops in /sys symlinks */ +#define MAX_SYSFS_DEPTH 3 + +/* We use additional 64+ bytes in make_device() */ +#define SCRATCH_SIZE 80 -#define bbg mdev_globals +/* Builds an alias path. + * This function potentionally reallocates the alias parameter. + * Only used for ENABLE_FEATURE_MDEV_RENAME + */ +static char *build_alias(char *alias, const char *device_name) +{ + char *dest; + + /* ">bar/": rename to bar/device_name */ + /* ">bar[/]baz": rename to bar[/]baz */ + dest = strrchr(alias, '/'); + if (dest) { /* ">bar/[baz]" ? */ + *dest = '\0'; /* mkdir bar */ + bb_make_directory(alias, 0755, FILEUTILS_RECUR); + *dest = '/'; + if (dest[1] == '\0') { /* ">bar/" => ">bar/device_name" */ + dest = alias; + alias = concat_path_file(alias, device_name); + free(dest); + } + } -/* mknod in /dev based on a path like "/sys/block/hda/hda1" */ + return alias; +} + +/* mknod in /dev based on a path like "/sys/block/hda/hda1" + * NB1: path parameter needs to have SCRATCH_SIZE scratch bytes + * after NUL, but we promise to not mangle (IOW: to restore if needed) + * path string. + * NB2: "mdev -s" may call us many times, do not leak memory/fds! + */ static void make_device(char *path, int delete) { - char *device_name; - int major, minor, type, len, fd; - int mode = 0660; - uid_t uid = 0; - gid_t gid = 0; - char *temp = path + strlen(path); - char *command = NULL; + char *device_name, *subsystem_slash_devname; + int major, minor, type, len; + mode_t mode; + parser_t *parser; /* Try to read major/minor string. Note that the kernel puts \n after * the data, so we don't need to worry about null terminating the string - * because sscanf() will stop at the first nondigit, which \n is. We - * also depend on path having writeable space after it. */ - + * because sscanf() will stop at the first nondigit, which \n is. + * We also depend on path having writeable space after it. + */ + major = -1; if (!delete) { - strcat(path, "/dev"); - fd = open(path, O_RDONLY); - len = read(fd, temp + 1, 64); - *temp++ = 0; - close(fd); - if (len < 1) return; + char *dev_maj_min = path + strlen(path); + + strcpy(dev_maj_min, "/dev"); + len = open_read_close(path, dev_maj_min + 1, 64); + *dev_maj_min = '\0'; + if (len < 1) { + if (!ENABLE_FEATURE_MDEV_EXEC) + return; + /* no "dev" file, but we can still run scripts + * based on device name */ + } else if (sscanf(++dev_maj_min, "%u:%u", &major, &minor) != 2) { + major = -1; + } } /* Determine device name, type, major and minor */ + device_name = (char*) bb_basename(path); + /* http://kernel.org/doc/pending/hotplug.txt says that only + * "/sys/block/..." is for block devices. "/sys/bus" etc is not. + * But since 2.6.25 block devices are also in /sys/class/block. + * We use strstr("/block/") to forestall future surprises. */ + type = S_IFCHR; + if (strstr(path, "/block/") || (G.subsystem && strncmp(G.subsystem, "block", 5) == 0)) + type = S_IFBLK; + + /* Make path point to "subsystem/device_name" */ + subsystem_slash_devname = NULL; + /* Check for coldplug invocations first */ + if (strncmp(path, "/sys/block/", 11) == 0) /* legacy case */ + path += sizeof("/sys/") - 1; + else if (strncmp(path, "/sys/class/", 11) == 0) + path += sizeof("/sys/class/") - 1; + else { + /* Example of a hotplug invocation: + * SUBSYSTEM="block" + * DEVPATH="/sys" + "/devices/virtual/mtd/mtd3/mtdblock3" + * ("/sys" is added by mdev_main) + * - path does not contain subsystem + */ + subsystem_slash_devname = concat_path_file(G.subsystem, device_name); + path = subsystem_slash_devname; + } - device_name = strrchr(path, '/') + 1; - type = path[5]=='c' ? S_IFCHR : S_IFBLK; - - /* If we have a config file, look up permissions for this device */ - - if (ENABLE_FEATURE_MDEV_CONF) { - 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 (conf) { - int line = 0; - - /* Loop through lines in mmaped file*/ - for (pos=conf; pos-confpw_uid; + /* If we have config file, look up user settings */ + if (ENABLE_FEATURE_MDEV_CONF) + parser = config_open2("/etc/mdev.conf", fopen_for_read); + + do { + int keep_matching; + struct bb_uidgid_t ugid; + char *tokens[4]; + char *command = NULL; + char *alias = NULL; + char aliaslink = aliaslink; /* for compiler */ + + /* Defaults in case we won't match any line */ + ugid.uid = ugid.gid = 0; + keep_matching = 0; + mode = 0660; + + if (ENABLE_FEATURE_MDEV_CONF + && config_read(parser, tokens, 4, 3, "# \t", PARSE_NORMAL) + ) { + char *val; + char *str_to_match; + regmatch_t off[1 + 9 * ENABLE_FEATURE_MDEV_RENAME_REGEXP]; + + val = tokens[0]; + keep_matching = ('-' == val[0]); + val += keep_matching; /* swallow leading dash */ + + /* Match against either "subsystem/device_name" + * or "device_name" alone */ + str_to_match = strchr(val, '/') ? path : device_name; + + /* Fields: regex uid:gid mode [alias] [cmd] */ + + if (val[0] == '@') { + /* @major,minor[-minor2] */ + /* (useful when name is ambiguous: + * "/sys/class/usb/lp0" and + * "/sys/class/printer/lp0") */ + int cmaj, cmin0, cmin1, sc; + if (major < 0) + continue; /* no dev, no match */ + sc = sscanf(val, "@%u,%u-%u", &cmaj, &cmin0, &cmin1); + if (sc < 1 + || major != cmaj + || (sc == 2 && minor != cmin0) + || (sc == 3 && (minor < cmin0 || minor > cmin1)) + ) { + continue; /* this line doesn't match */ + } + goto line_matches; + } + if (val[0] == '$') { + /* regex to match an environment variable */ + char *eq = strchr(++val, '='); + if (!eq) + continue; + *eq = '\0'; + str_to_match = getenv(val); + if (!str_to_match) + continue; + str_to_match -= strlen(val) + 1; + *eq = '='; + } + /* else: regex to match [subsystem/]device_name */ + + { + regex_t match; + int result; + + xregcomp(&match, val, REG_EXTENDED); + result = regexec(&match, str_to_match, ARRAY_SIZE(off), off, 0); + regfree(&match); + //bb_error_msg("matches:"); + //for (int i = 0; i < ARRAY_SIZE(off); i++) { + // if (off[i].rm_so < 0) continue; + // bb_error_msg("match %d: '%.*s'\n", i, + // (int)(off[i].rm_eo - off[i].rm_so), + // device_name + off[i].rm_so); + //} + + /* If no match, skip rest of line */ + /* (regexec returns whole pattern as "range" 0) */ + if (result + || off[0].rm_so + || ((int)off[0].rm_eo != (int)strlen(str_to_match)) + ) { + continue; /* this line doesn't match */ + } + } + line_matches: + /* This line matches. Stop parsing after parsing + * the rest the line unless keep_matching == 1 */ + + /* 2nd field: uid:gid - device ownership */ + if (get_uidgid(&ugid, tokens[1], 1) == 0) + bb_error_msg("unknown user/group %s on line %d", tokens[1], parser->lineno); + + /* 3rd field: mode - device permissions */ + bb_parse_mode(tokens[2], &mode); + + val = tokens[3]; + /* 4th field (opt): ">|=alias" or "!" to not create the node */ + + if (ENABLE_FEATURE_MDEV_RENAME && val) { + char *a, *s, *st; + + a = val; + s = strchrnul(val, ' '); + st = strchrnul(val, '\t'); + if (st < s) + s = st; + st = (s[0] && s[1]) ? s+1 : NULL; + + aliaslink = a[0]; + if (aliaslink == '!' && s == a+1) { + val = st; + /* "!": suppress node creation/deletion */ + major = -1; + } + else if (aliaslink == '>' || aliaslink == '=') { + val = st; + s[0] = '\0'; + if (ENABLE_FEATURE_MDEV_RENAME_REGEXP) { + char *p; + unsigned i, n; + + /* substitute %1..9 with off[1..9], if any */ + n = 0; + s = a; + while (*s) + if (*s++ == '%') + n++; + + p = alias = xzalloc(strlen(a) + n * strlen(str_to_match)); + s = a + 1; + while (*s) { + *p = *s; + if ('%' == *s) { + i = (s[1] - '0'); + if (i <= 9 && off[i].rm_so >= 0) { + n = off[i].rm_eo - off[i].rm_so; + strncpy(p, str_to_match + off[i].rm_so, n); + p += n - 1; + s++; + } } + p++; s++; - /* parse GID */ - gid = strtoul(s, &s2, 10); - if (end2 != s2) { - struct group *grp; - grp = getgrnam(strndupa(s, end2-s)); - if (!grp) break; - gid = grp->gr_gid; - } - } else if (field == 2) { - /* mode */ - - mode = strtoul(pos, &pos, 8); - if (pos != end2) break; - } else if (ENABLE_FEATURE_MDEV_EXEC && field == 3) { - // Command to run - char *s = "@$*", *s2; - if (!(s2 = strchr(s, *pos++))) { - // Force error - field = 1; - break; - } - if ((s2-s+1) & (1< 2) break; - if (field) bb_error_msg_and_die("Bad line %d",line); + if (!s2) { + bb_error_msg("bad line %u", parser->lineno); + if (ENABLE_FEATURE_MDEV_RENAME) + free(alias); + continue; + } - /* Next line */ - pos = ++end; + /* Are we running this command now? + * Run $cmd on delete, @cmd on create, *cmd on both + */ + if (s2 - s != delete) { + /* We are here if: '*', + * or: '@' and delete = 0, + * or: '$' and delete = 1 + */ + command = xstrdup(val + 1); } - munmap(conf, len); } - close(fd); } - } - umask(0); - if (!delete) { - if (sscanf(temp, "%d:%d", &major, &minor) != 2) return; - if (mknod(device_name, mode | type, makedev(major, minor)) && errno != EEXIST) - bb_perror_msg_and_die("mknod %s failed", device_name); + /* End of field parsing */ - if (major == bbg.root_major && minor == bbg.root_minor) - symlink(device_name, "root"); + /* "Execute" the line we found */ + { + const char *node_name; - if (ENABLE_FEATURE_MDEV_CONF) chown(device_name, uid, gid); - } - if (command) { - int rc; - char *s; - - s=xasprintf("MDEV=%s",device_name); - putenv(s); - rc = system(command); - s[4]=0; - putenv(s); - free(s); - free(command); - if (rc == -1) bb_perror_msg_and_die("Couldn't run %s", command); - } - if (delete) unlink(device_name); -} + node_name = device_name; + if (ENABLE_FEATURE_MDEV_RENAME && alias) + node_name = alias = build_alias(alias, device_name); -/* Recursive search of /sys/block or /sys/class. path must be a writeable - * buffer of size PATH_MAX containing the directory string to start at. */ + if (!delete && major >= 0) { + if (mknod(node_name, mode | type, makedev(major, minor)) && errno != EEXIST) + bb_perror_msg("can't create '%s'", node_name); + if (major == G.root_major && minor == G.root_minor) + symlink(node_name, "root"); + if (ENABLE_FEATURE_MDEV_CONF) { + chmod(node_name, mode); + chown(node_name, ugid.uid, ugid.gid); + } + if (ENABLE_FEATURE_MDEV_RENAME && alias) { + if (aliaslink == '>') + symlink(node_name, device_name); + } + } -static void find_dev(char *path) -{ - DIR *dir; - size_t len = strlen(path); - struct dirent *entry; + if (ENABLE_FEATURE_MDEV_EXEC && command) { + /* setenv will leak memory, use putenv/unsetenv/free */ + char *s = xasprintf("%s=%s", "MDEV", node_name); + char *s1 = xasprintf("%s=%s", "SUBSYSTEM", G.subsystem); + putenv(s); + putenv(s1); + if (system(command) == -1) + bb_perror_msg("can't run '%s'", command); + bb_unsetenv_and_free(s1); + bb_unsetenv_and_free(s); + free(command); + } - if ((dir = opendir(path)) == NULL) - return; + if (delete && major >= 0) { + if (ENABLE_FEATURE_MDEV_RENAME && alias) { + if (aliaslink == '>') + unlink(device_name); + } + unlink(node_name); + } - while ((entry = readdir(dir)) != NULL) { - struct stat st; + if (ENABLE_FEATURE_MDEV_RENAME) + free(alias); + } - /* Skip "." and ".." (also skips hidden files, which is ok) */ + /* We found matching line. + * Stop unless it was prefixed with '-' */ + if (ENABLE_FEATURE_MDEV_CONF && !keep_matching) + break; - if (entry->d_name[0] == '.') - continue; + /* end of "while line is read from /etc/mdev.conf" */ + } while (ENABLE_FEATURE_MDEV_CONF); - // uClibc doesn't fill out entry->d_type reliably. so we use lstat(). + if (ENABLE_FEATURE_MDEV_CONF) + config_close(parser); + free(subsystem_slash_devname); +} - snprintf(path+len, PATH_MAX-len, "/%s", entry->d_name); - if (!lstat(path, &st) && S_ISDIR(st.st_mode)) find_dev(path); - path[len] = 0; +/* File callback for /sys/ traversal */ +static int FAST_FUNC fileAction(const char *fileName, + struct stat *statbuf UNUSED_PARAM, + void *userData, + int depth UNUSED_PARAM) +{ + size_t len = strlen(fileName) - 4; /* can't underflow */ + char *scratch = userData; - /* If there's a dev entry, mknod it */ + /* len check is for paranoid reasons */ + if (strcmp(fileName + len, "/dev") != 0 || len >= PATH_MAX) + return FALSE; - if (!strcmp(entry->d_name, "dev")) make_device(path, 0); + strcpy(scratch, fileName); + scratch[len] = '\0'; + make_device(scratch, /*delete:*/ 0); + + return TRUE; +} + +/* Directory callback for /sys/ traversal */ +static int FAST_FUNC dirAction(const char *fileName UNUSED_PARAM, + struct stat *statbuf UNUSED_PARAM, + void *userData UNUSED_PARAM, + int depth) +{ + /* Extract device subsystem -- the name of the directory + * under /sys/class/ */ + if (1 == depth) { + free(G.subsystem); + G.subsystem = strrchr(fileName, '/'); + if (G.subsystem) + G.subsystem = xstrdup(G.subsystem + 1); } - closedir(dir); + return (depth >= MAX_SYSFS_DEPTH ? SKIP : TRUE); } -int mdev_main(int argc, char *argv[]) +/* For the full gory details, see linux/Documentation/firmware_class/README + * + * Firmware loading works like this: + * - kernel sets FIRMWARE env var + * - userspace checks /lib/firmware/$FIRMWARE + * - userspace waits for /sys/$DEVPATH/loading to appear + * - userspace writes "1" to /sys/$DEVPATH/loading + * - userspace copies /lib/firmware/$FIRMWARE into /sys/$DEVPATH/data + * - userspace writes "0" (worked) or "-1" (failed) to /sys/$DEVPATH/loading + * - kernel loads firmware into device + */ +static void load_firmware(const char *firmware, const char *sysfs_path) { - char *action; - char *env_path; - RESERVE_CONFIG_BUFFER(temp,PATH_MAX); + int cnt; + int firmware_fd, loading_fd, data_fd; + + /* check for /lib/firmware/$FIRMWARE */ + xchdir("/lib/firmware"); + firmware_fd = xopen(firmware, O_RDONLY); + + /* in case we goto out ... */ + data_fd = -1; + + /* check for /sys/$DEVPATH/loading ... give 30 seconds to appear */ + xchdir(sysfs_path); + for (cnt = 0; cnt < 30; ++cnt) { + loading_fd = open("loading", O_WRONLY); + if (loading_fd != -1) + goto loading; + sleep(1); + } + goto out; + + loading: + /* tell kernel we're loading by "echo 1 > /sys/$DEVPATH/loading" */ + if (full_write(loading_fd, "1", 1) != 1) + goto out; + + /* load firmware into /sys/$DEVPATH/data */ + data_fd = open("data", O_WRONLY); + if (data_fd == -1) + goto out; + cnt = bb_copyfd_eof(firmware_fd, data_fd); + + /* tell kernel result by "echo [0|-1] > /sys/$DEVPATH/loading" */ + if (cnt > 0) + full_write(loading_fd, "0", 1); + else + full_write(loading_fd, "-1", 2); + + out: + if (ENABLE_FEATURE_CLEAN_UP) { + close(firmware_fd); + close(loading_fd); + close(data_fd); + } +} - xchdir(DEV_PATH); +int mdev_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int mdev_main(int argc UNUSED_PARAM, char **argv) +{ + RESERVE_CONFIG_BUFFER(temp, PATH_MAX + SCRATCH_SIZE); - /* Scan */ + /* We can be called as hotplug helper */ + /* Kernel cannot provide suitable stdio fds for us, do it ourself */ + bb_sanitize_stdio(); - if (argc == 2 && !strcmp(argv[1],"-s")) { - struct stat st; + /* Force the configuration file settings exactly */ + umask(0); - stat("/", &st); // If this fails, we have bigger problems. - bbg.root_major=major(st.st_dev); - bbg.root_minor=minor(st.st_dev); - strcpy(temp,"/sys/block"); - find_dev(temp); - strcpy(temp,"/sys/class"); - find_dev(temp); + xchdir("/dev"); - /* Hotplug */ + if (argv[1] && strcmp(argv[1], "-s") == 0) { + /* Scan: + * mdev -s + */ + struct stat st; + xstat("/", &st); + G.root_major = major(st.st_dev); + G.root_minor = minor(st.st_dev); + + /* ACTION_FOLLOWLINKS is needed since in newer kernels + * /sys/block/loop* (for example) are symlinks to dirs, + * not real directories. + * (kernel's CONFIG_SYSFS_DEPRECATED makes them real dirs, + * but we can't enforce that on users) + */ + if (access("/sys/class/block", F_OK) != 0) { + /* Scan obsolete /sys/block only if /sys/class/block + * doesn't exist. Otherwise we'll have dupes. + * Also, do not complain if it doesn't exist. + * Some people configure kernel to have no blockdevs. + */ + recursive_action("/sys/block", + ACTION_RECURSE | ACTION_FOLLOWLINKS | ACTION_QUIET, + fileAction, dirAction, temp, 0); + } + recursive_action("/sys/class", + ACTION_RECURSE | ACTION_FOLLOWLINKS, + fileAction, dirAction, temp, 0); } else { + char *fw; + char *seq; + char *action; + char *env_path; + static const char keywords[] ALIGN1 = "remove\0add\0"; + enum { OP_remove = 0, OP_add }; + smalluint op; + + /* Hotplug: + * env ACTION=... DEVPATH=... SUBSYSTEM=... [SEQNUM=...] mdev + * ACTION can be "add" or "remove" + * DEVPATH is like "/block/sda" or "/class/input/mice" + */ action = getenv("ACTION"); env_path = getenv("DEVPATH"); - if (!action || !env_path) + G.subsystem = getenv("SUBSYSTEM"); + if (!action || !env_path /*|| !G.subsystem*/) bb_show_usage(); + fw = getenv("FIRMWARE"); + op = index_in_strings(keywords, action); + /* If it exists, does /dev/mdev.seq match $SEQNUM? + * If it does not match, earlier mdev is running + * in parallel, and we need to wait */ + seq = getenv("SEQNUM"); + if (seq) { + int timeout = 2000 / 32; /* 2000 msec */ + do { + int seqlen; + char seqbuf[sizeof(int)*3 + 2]; + + seqlen = open_read_close("mdev.seq", seqbuf, sizeof(seqbuf-1)); + if (seqlen < 0) { + seq = NULL; + break; + } + seqbuf[seqlen] = '\0'; + if (seqbuf[0] == '\n' /* seed file? */ + || strcmp(seq, seqbuf) == 0 /* correct idx? */ + ) { + break; + } + usleep(32*1000); + } while (--timeout); + } - sprintf(temp, "/sys%s", env_path); - if (!strcmp(action, "add")) make_device(temp,0); - else if (!strcmp(action, "remove")) make_device(temp,1); + snprintf(temp, PATH_MAX, "/sys%s", env_path); + if (op == OP_remove) { + /* Ignoring "remove firmware". It was reported + * to happen and to cause erroneous deletion + * of device nodes. */ + if (!fw) + make_device(temp, /*delete:*/ 1); + } + else if (op == OP_add) { + make_device(temp, /*delete:*/ 0); + if (ENABLE_FEATURE_MDEV_LOAD_FIRMWARE) { + if (fw) + load_firmware(fw, temp); + } + } + + if (seq) { + xopen_xwrite_close("mdev.seq", utoa(xatou(seq) + 1)); + } } - if (ENABLE_FEATURE_CLEAN_UP) RELEASE_CONFIG_BUFFER(temp); - return 0; + if (ENABLE_FEATURE_CLEAN_UP) + RELEASE_CONFIG_BUFFER(temp); + + return EXIT_SUCCESS; }