diff options
Diffstat (limited to 'util-linux/mdev.c')
| -rw-r--r-- | util-linux/mdev.c | 51 |
1 files changed, 14 insertions, 37 deletions
diff --git a/util-linux/mdev.c b/util-linux/mdev.c index 17355bf..84e72e2 100644 --- a/util-linux/mdev.c +++ b/util-linux/mdev.c @@ -236,7 +236,6 @@ enum { OP_add, OP_remove }; struct rule { bool keep_matching; bool regex_compiled; - bool regex_has_slash; mode_t mode; int maj, min0, min1; struct bb_uidgid_t ugid; @@ -340,7 +339,6 @@ static void parse_next_rule(void) } xregcomp(&G.cur_rule.match, val, REG_EXTENDED); G.cur_rule.regex_compiled = 1; - G.cur_rule.regex_has_slash = (strchr(val, '/') != NULL); } /* 2nd field: uid:gid - device ownership */ @@ -467,11 +465,10 @@ static char *build_alias(char *alias, const char *device_name) */ static void make_device(char *device_name, char *path, int operation) { - char *subsystem_slash_devname; int major, minor, type, len; if (G.verbose) - bb_error_msg("make_device: %s, %s, op:%d", device_name, path, operation); + bb_error_msg("device: %s, %s", device_name, path); /* 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 @@ -479,7 +476,7 @@ static void make_device(char *device_name, char *path, int operation) * We also depend on path having writeable space after it. */ major = -1; - if (operation != OP_remove) { + if (operation == OP_add) { char *dev_maj_min = path + strlen(path); strcpy(dev_maj_min, "/dev"); @@ -490,7 +487,10 @@ static void make_device(char *device_name, char *path, int operation) 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) { + } else if (sscanf(++dev_maj_min, "%u:%u", &major, &minor) == 2) { + if (G.verbose) + bb_error_msg("maj,min: %u,%u", major, minor); + } else { major = -1; } } @@ -502,29 +502,12 @@ static void make_device(char *device_name, char *path, int operation) /* 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. */ + * 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; - } - #if ENABLE_FEATURE_MDEV_CONF G.rule_idx = 0; /* restart from the beginning (think mdev -s) */ #endif @@ -537,7 +520,7 @@ static void make_device(char *device_name, char *path, int operation) char *node_name; const struct rule *rule; - str_to_match = ""; + str_to_match = device_name; rule = next_rule(); @@ -555,12 +538,8 @@ static void make_device(char *device_name, char *path, int operation) dbg("getenv('%s'):'%s'", rule->envvar, str_to_match); if (!str_to_match) continue; - } else { -//TODO: $DEVNAME can have slashes too, -// we should stop abusing '/' as a special syntax in our regex'es - /* regex to match [subsystem/]device_name */ - str_to_match = (rule->regex_has_slash ? path : device_name); } + /* else: str_to_match = device_name */ if (rule->regex_compiled) { int regex_match = regexec(&rule->match, str_to_match, ARRAY_SIZE(off), off, 0); @@ -669,12 +648,12 @@ static void make_device(char *device_name, char *path, int operation) bb_error_msg("mknod: %s (%d,%d) %o", node_name, major, minor, rule->mode | type); if (mknod(node_name, rule->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, rule->mode); chown(node_name, rule->ugid.uid, rule->ugid.gid); } + if (major == G.root_major && minor == G.root_minor) + symlink(node_name, "root"); if (ENABLE_FEATURE_MDEV_RENAME && alias) { if (aliaslink == '>') { //TODO: on devtmpfs, device_name already exists and symlink() fails. @@ -723,8 +702,6 @@ static void make_device(char *device_name, char *path, int operation) if (!ENABLE_FEATURE_MDEV_CONF || !rule->keep_matching) break; } /* for (;;) */ - - free(subsystem_slash_devname); } /* File callback for /sys/ traversal */ @@ -890,13 +867,13 @@ int mdev_main(int argc UNUSED_PARAM, char **argv) * DEVPATH is like "/block/sda" or "/class/input/mice" */ action = getenv("ACTION"); + op = index_in_strings(keywords, action); env_devname = getenv("DEVNAME"); /* can be NULL */ env_devpath = getenv("DEVPATH"); G.subsystem = getenv("SUBSYSTEM"); if (!action || !env_devpath /*|| !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 */ @@ -927,7 +904,7 @@ int mdev_main(int argc UNUSED_PARAM, char **argv) if (logfd >= 0) { xmove_fd(logfd, STDERR_FILENO); G.verbose = 1; - bb_error_msg("pid: %u seq: %s action: %s", getpid(), seq, action); + bb_error_msg("seq: %s action: %s", seq, action); } } |